EN ISO 12086-1:1999

SLOVENSKI STANDARD
01-maj-2000
3ROLPHUQLPDWHULDOL'LVSHU]LMHLQPDWHULDOL]DREOLNRYDQMHLQHNVWUXGLUDQMHQD
RVQRYLIOXRURSROLPHURYGHO6LVWHPR]QDþHYDQMDLQSRGODJH]DVSHFLILNDFLMH
,62
Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO 12086-1:1995)
Plastiques - Polymeres fluorés: dispersions et matériaux pour moulage et extrusion -
Partie 1: Systeme de désignation et base de spécification (ISO 12086-1:1995)
Ta slovenski standard je istoveten z: EN ISO 12086-1:1999
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
IS0
STANDARD 12086-l
First edition
1995-12-15
Plastics - Fluoropolymer dispersions and
moulding and extrusion materials -
Part 1:
Designation system and basis for
specifications
P/as tiques - Polym&es fluor&: dispersions et matkiaux pour moulage
et extrusion -
Partie 1: Systkme de dhigna tion et base de spkification
Reference number
IS0 12086-l :I 995(E)
IS0 12086=1:1995(E)
Contents
Page
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Scope
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Abbreviated terms and symbols . 4
................................................................... 5
5 Designation system
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.11 Data block 1
5.2 Data block 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.3 Data block 3
....................................................... 8
5.3.1 Transition temperatures
5.3.2 Relative molecular mass . 9
Mechanical properties . 10
5.3.3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.3.4 Density
5.3.5 Percentage fluoropolymer and surfactant . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.3.6 Particle size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bulk density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3.7
Powder flow time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3.8
5.3.9 Extrusion pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Contamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3.10
5.4 Data block 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.5 Data block 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.6 Designatory properties for fluoropolymers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
. . . 15
5.6.1 Designatory properties applicable to all fluoropolymers
5.6.2 Designator-y properties specific to particular classes of
fluoropolymer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Example of a designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
0 IS0 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
0 IS0
IS0 12086=1:1995(E)
7 Specifications for fluoropolymers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Packaging and marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Annexes
A Designatory properties for common fluoropolymer types
. . . . 19
B Designator-y properties for common fluoropolymer types with
cross-reference listing to the tables for codes in IS0 12086-I and the
test methods in IS0 12086-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
C The fluoropolymer family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D Standard specifications for fluoropolymers
. . . . . . . . . . . . . . . . . . . . . . . . . . .
E Listing of test methods included in IS0 12086-2 (alphabetical
order) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F Brief instructions for use of IS0 120864
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
. . .
III
0 IS0
IS0 12086=1:1995(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 12086-l was prepared by Technical Committee
lSO/TC 61, Plastics, Subcommittee SC I, Terminology.
IS0 12086 consists of the following parts, under the general title
P/as tics - Fluoropolymer dispersions and moulding and extrusion ma-
terials:
- Part 1: Designation system and basis for specifications
- Part 2: Preparation of test specimens and determination of proper-
ties
Annexes A and B form an integral part of this part of IS0 12086. Annexes
C, D, E and F are for information only.

INTERNATIONAL STANDARD 0 ISO IS0 12086-1:1995(E)
Plastics - Fluoropolymer dispersions and moulding
and extrusion materials -
Part 1:
Designation system and basis for specifications
1 Scope
1.1 IS0 12086-I establishes a system of designation for fluoropolymer materials that may be used as the basis
for specifications. It covers the homopolymers and various copolymers of fluoromonomers used as dispersions
and for moulding, extrusion, and other specialized applications. This part describes the designation system and
provides codes and tables of values for the designator-y properties. The designation system is applicable both to
conventional thermoplastic fluoropolymers, processed by various techniques, and those materials that are pro-
cessed by the unique operations required for the non-conventional thermoplastic polytetrafluoroethylene. The
materials include both the fluorocarbon polymers and the various other fluoropolymers as virgin polymers or pro-
cessed for reuse or recycling. This part of IS0 12086 also includes an extension of the designation system that
provides a basis for specification of the materials. This basis for specification may be used to prepare specifications
related to well defined applications. These specifications will use data blocks 1 to 4 and, if necessary, data block
5 as a complement, the last-mentioned data block containing the specific requirements in relation to the appli-
cation. Fluoroelastomers are specifically excluded.
1.2 Fluoropolymers are long-chain homopolymers and copolymers of fluoromonomers. Fluoropolymers can be
modified with small amounts of different fluoromonomers. In general, provided the polymer is not modified with
more than five percent by mass of modifying fluoromonomer(s), it can be classed as the base polymer. PVDF is
classed as the base polymer when it is modified during polymerization with up to two percent by mass of ad-
ditional fluoromonomer(s) in the polymer structure. For PTFE, up to one percent by mass of a modifying
comonomer is the limit for the material to be classed as polytetrafluoroethylene. A general discussion of members
of the fluoropolymer family is included in informative annex C. This part of IS0 12086 is particularly concerned
with, but is not limited to, the materials listed in 4.2. The accepted abbreviated term for each material is included
in 4.2.
1.3 The various types of fluoropolymer are differentiated from each other by a classification system based on
the fluoropolymer genus and appropriate levels of the designatory properties, along with information about basic
polymer parameters, intended application or method of processing, important properties, additives, colorants, fill-
ers, and reinforcing materials. Designatory properties for each fluoropolymer are selected from the general list in
5.3 and those properties to be designated for each fluoropolymer are listed in 5.6 and in normative annexes A and
B .
0 IS0
IS0 12086=1:1995(E)
1.4 Provision is made for designation of materials involved in reuse and recycling of the fluoropolymers covered
by this part of IS0 12086. A set of designatory properties is provided for reprocessed PTFE because of its special
requirements. For non-virgin conventional thermoplastic fluoropolymers, the same designatory properties as used
for virgin materials shall be used with inclusion of the code Zl, 22 or 23 in data block 1 as specified in table 1.
1.5 It is not intended to imply that materials having the same designation necessarily give the same perform-
ance. The converse also should be emphasized, i.e. materials with different designations may be suitable for use
in the same application. IS0 12086-I does not provide engineering data, performance data, or processing con-
ditions which may be required to specify materials for particular end-use applications (see the discussion on use
of data block 5 in clauses 5 and 7). If such additional properties are required, they shall be determined in accord-
ance with the test methods specified in IS0 12086-2, if suitable.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part
of IS0 12086. At the time of publication, the editions indicated were valid. All standards are subject to revision,
and parties to agreements based on this part of IS0 12086 are encouraged to investigate the possibility of applying
the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently
valid International Standards.
IS0 472:1988, Plastics - Vocabulary.
IS0 527-l : 1993, Plastics - Determination of tensile properties - Part 1: General principles.
IS0 527-2:1993, Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and
extrusion plastics.
IS0 842: 1984, Raw materials for paints and varnishes - Sampling.
Part 1: Basic polymers and their special characteristics.
IS0 1043-I :I 987, Plastics - Symbols -
Part 2: Fillers and reinforcing materials.
IS0 1043-2: 1988, Plastics - Symbols -
IS0 1133:1991, Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR)
of thermoplastics.
Methods for determining the density and relative density of non-cellular plastics.
IS0 1183:1987, Plastics -
Fluoropolymer dispersions and moulding and extrusion materials - Part 2: Prep-
IS0 12086-2: 1995, Plastics -
aration of test specimens and determination of properties.
ASTM D 1430-91 a, Specification for polychlorotrifluoroethylene (PCTFE) plastics.
ASTM D 1600-93, Terminology for abbreviated terms relating to plastics.
ASTM D 3222-91 a, Specification for unmodified poly(vinylidene fluoride) (PVDF) molding, extrusion, and coating
materials.
ASTM D 3418-83(1988), Test method for transition temperatures of polymers by thermal analysis.
ASTM D 3892-93, Practice for packaging/packing of plastics.
ASTM D 4591-93a, Test method for determining temperatures and heats of transitions of fluoropolymers by dif-
feren tial scanning calorimetry.
ASTM D 4895-91 a, Specification for polytetrafluoroethylene (PTFE) resins produced from dispersion.
Q IS0 IS0 12086=1:1995(E)
3 Definitions
The terminology given in IS0 472 is applicable to this part of IS0 12086, except for terms defined in 3.2.
3.1
The terms listed in 3.1 .I to 3.1.3 are repeated from IS0 472 to be sure there is no misunderstanding.
dispersion: A heterogeneous system in which a finely divided material is distributed in another material.
3.1.1
3.1.2 fluoroplastic: A plastic based on polymers made with monomers containing one or more atoms of fluorine,
or copolymers of such monomers with other monomers, the fluoromonomer(s) being in the greatest amount by
mass.
3.1.3 latex: A colloidal aqueous dispersion of a polymeric material.
3,2 For the purposes of this part of IS0 12086, the following additional definitions apply.
3.2.1 amorphous: Noncrystalline, or devoid of regular structure.
3.2.2 bulk density: The mass (in grams) per litre of material, measured under the conditions of the test.
copolymer: A polymer formed from two or more types of monomer.
3.2.3
3.2.4 emulsion polymer (as it applies to fluoropolymer materials): Material isolated from its polymerization me-
dium as a colloidal aqueous dispersion of the polymer solids.
NOTE 1 This definition, used in the fluoropolymer industry, is similar to that for “latex” in IS0 472 and is quite different from
the definition for “emulsion” in IS0 472.
3.2.5 fluorocarbon plastic: A plastic based on polymers made from perfluoromonomers only.
3.2.6 fluoroelastomer: An elastomer based on polymers made from monomers containing one or more atoms
of fluorine, or copolymers of such monomers with other monomers, the fluoromonomer(s) being in the greatest
amount by mass.
3.2.7 fluoropolymer: Synonymous with fluoroplastic (see 3.1.2).
injection moulding, screw extrusion, and
3.2.8 melt-processible: Capable of being processed by, for example,
other operations typically used with thermoplastics.
3.2.9 preforming: Compacting powdered PTFE material under pressure in a mould to produce a solid object,
called a preform, that is capable of being handled.
NOTE 2 With PTFE, “moulding” and “compaction” are terms used interchangeably with “preforming ”.
3.2.10 presintered resin: Resin that has been treated thermally at or above the melting point of the resin at at-
mospheric pressure without having been previously preformed.
3.2.11 reprocessed plastic: Material from the manufacture of semifinished forms of fluoropolymers that has
been converted to a form suitable for further use.
NOTES
This material is often referred to as byproduct from processing.
4 Related definitions are presented in ASTM D 5033-90, Guide for the development of standards relating to the proper use
of recycled plastics.
3.2.12 sintering: A thermal treatment during which the material is melted and recrystallized by cooling, with
coalescence occurring during the treatment.
0 IS0
IS0 12086=1:1995(E)
3.2.13 standard specific gravity (SSG): The specific gravity of a specimen of PTFE material preformed, sintered,
and cooled through the crystallization point at a rate of 1 "C per minute in accordance with the appropriate sintering
schedule as described in IS0 12086-2.
The SSG of unmodified PTFE is inversely related to its molecular mass.
NOTE 5
3.2.14 suspension polymer: A polymer isolated from its liquid polymerization medium as a solid having a particle
size well above colloidal dimensions.
zero-strength time (ET): A measure of the relative molecular mass of PCTFE.
3.2.15
4 Abbreviated terms and symbols
4.1 The abbreviated terms given in IS0 1043-I and IS0 1043-2 are app icable to this pat-t of IS0 12086.
This part of IS0 12086 is particularly concerned with, but is not lim ted to, the materials listed below (there
4.2
are minor differences from IS0 1043-I and IS0 1043-2 that reflect current usage of the terms and abbreviated
terms):
PTFE polytetrafluoroethylene
PFA perfluoro(alkoxy alkane)
FEP perfluoro(ethylene-propene) copolymer
ethylene-tetrafluoroethylene-hexafluoropropene copolymer
EFEP
TFE/PDD tetrafluoroethylene-perfluoro(dioxole) copolymer
VDF/HFP vinylidene fluoride-hexafluoropropene copolymer
VDF/TFE vinylidene fluoride-tetrafluoroethylene copolymer
VDF/TFE/HFP vinylidene fluoride-tetrafluoroethylene-hexafluoropropene copolymer
ETFE ethylene-tetrafluoroethylene copolymer
PVDF poly(vinylidene fluoride)
vinylidene fluoride-chlorotrifluoroethylene copolymer
VDF/CTFE
polychlorotrifluoroethylene
PCTFE
PVF poly(vinyl fluoride)
ECTFE ethylene-chlorotrifluoroethylene copolymer

63 IS0 IS0 12086=1:1995(E)
4.3 For the purposes of this part of IS0 12086, the following abbreviated terms apply in addition to those given
in 3.2 and 4.2.
AF amorphous fluoropolymer
ESG extended specific gravity
MFR melt mass-flow rate
MVR melt volume-flow rate
SSG standard specific gravity
SVI stretching-void index
TII thermal-instability index
5 Designation system
The designation system for thermoplastics is based on the following standardized pattern:
Designation
Identity block
Individual-item block
International Standard
Data Data Data Data
Description block Data
number block
block block block
(optional) block block
1 2 3 4 5
The designation consists of an optional description block, reading “Thermoplastics ”, and an identity block com-
prising the International Standard number and an individual-item block. For unambiguous coding, the individual-item
block is subdivided into five data blocks comprising the following information:
Identification of the plastic by its abbreviated term in accordance with IS0 1043-I (sup-
Data block 1:
plemented, if necessary, by the abbreviated term for the fluoropolymer as listed in 4.2 or
ASTM D 1600) and information related to composition of the polymer (see 5.1).
Data block 2: Position 1: Intended application or method of processing (see 5.2).
Positions 2 to 8: Important properties, additives, and supplementary information (see
. .
5 2)
Data block 3: Designatory properties (see 5.3 and 5.6).
Data block 4: Fillers or reinforcing materials designated by letters as given in IS0 1043-2 (supplemented
by the codes listed in table20), along with arabic numerals representing the nominal per-
centage content by mass (see 5.4).
Additional details included in this data block will transform the general designation of a
Data block 5:
material into a material specification. This may be done by reference to particular require-
ments for properties, by reference to a suitable national standard, or both. See clause 7 for
further discussion and examples.
The first character of the individual-item block shall be a hyphen. The five data blocks shall be separated from each
other by commas. If a data block is not used, the comma that would be at its end shall be included, thus resulting
in a doubling of the separation sign (,,).

0 IS0
IS0 12086=1:1995(E)
5.1 Data block 1
In this data block, fluoropolymers are identified by the abbreviated term given in IS0 1043-1, followed by a hyphen
and one letter that codes additional information about the polymer as specified in table 1. See 4.2 for a list of
commonly used fluoropolymers with the abbreviated term for each.
- Cdde-letters used for additional information in data
Table I
block I
Code-
Meaning of letters in data block 1
letter
A Modif ied
B Block copolymer
C Controlled rheology, narrow molecular-mass distribution
D Dispersion
E Emulsion polymer
F Filler resin (additive resin)
G Casting polymer
H Homopolymer
K Copolymer
L Graft polymer
M Bulk polymer
R Random copolymer
S Suspension polymer
ss Presintered suspension polymer
21 In-house-recovered material; out of specification/waste
22 Reprocessed; byproduct from processing
23 Postconsumer material
5.2 Data block 2
This block can indicate up to eight items of information coded by letters as specified in table 2. Information about
intended application or method of processing is given in position 1. Information about important properties, addi-
tives, and supplemental information, if requested, (up to seven items) is given in positions 2 to 8. The code-letters
are specified in table2.
If only one letter is given (e.g., E), its meaning must come from position 1. If information is presented in positions
2 to 8 and no specific information is given in position 1, a code-letter in position 1 is required. If no code-letter is
appropriate, the letter X shall be inserted in position 1. An alphabetical order is recommended if more than one
code-letter is used in any of positions 2 to 8.
Any indication of an intended application in data block 2 shall be selected carefully. Many materials are capable
of more than one application or method of processing, e.g., extrusion (E) and moulding (M). Such materials are
not special modifications and shall be coded “general use” (G). Coding for special methods of processing shall be
reserved for materials designed for the application.

Q IS0 IS0 12086=1:1995(E)
Table 2 - Code-letters used in data block 2
Essential properties, additives or other information
Intended application or method of processing
Code-
Code-
Position 1 Positions 2 to 8
letter
letter
C Coloured
A Adhesives
D Powder
B Blow moulding
Dl Dry blend
Bl Extrusion blow moulding
D2 Free-flowing
B2 Injection blow moulding
D3 Not free-flowing
C Calendering
E Expandable
E Extrusion
F Special burning characteristics
F Filled compounds
Fl Oxygen index > 95 %
G General use
F2
Flame retarded
H Coating
F4 Reduced smoke emission
Powder coating
Hl
G Granules
H2 Dip coating
Gl Pellets
H3 Wet coating
G2 Lentils
H4 Impregnation
G3 Beads
H5 Spray coating
HI Stabilized against radiation
K Cable and wire coating
L
L Monofilament extrusion Light & weather stabilized
M Nucleated
M Moulding
MI Modified by comonomer
Ml Injection moulding
N
M2 Transfer moulding Natural (no colour added)
Nl Suitable for food contact
P Paste extrusion
N2 High purity
Q Compression moulding
P Impact modified
Ql Automatic moulding
R Mould release agent
Q2 lsostatic moulding
R Rotational moulding S Lubricated
Sl External lubrication
S Sintering
T T Transparent
Tape manufacture
Skived tape or film Tl Translucent
Tl
T2
T2 Unsintered tape or film Opaque
T3 Improved transmission in UV
T3 Expanded tape or film
T4 Reduced transmission in UV
V Thermoforming
V Heat shrinkable
X No indication
WI Improved chemical resistance
Y Textile yarns, spinning
X Crosslinkable
Y Increased electrical conductivity
Z Antistatic
5.3 Data block 3
Each member of the fluoropolymer family has its own set of designatoty properties selected from the properties
listed below and discussed further in 5.6. Annex A provides the information in tabular form. Annex B provides a
summary that lists each of the fluoropolymers specifically included in this part of IS0 12086 and its designator-y
properties. Table number and page references are provided for each designatory property along with the subclause
and page reference to the test method provided in IS0 12086-2. The designatory properties shall be determined
in accordance with the test methods and conditions indicated for each item. There is one position in data block 3
for each of the designatory properties for a particular fluoropolymer. Therefore, data block 3 may have more pos-
itions for one fluoropolymer than for another. As an example, from annex A or B, one finds seven designator-y
properties for PTFE-S, so there will be seven positions in data block 3 for this polymer. PTFE-Z, on the other hand,
has only two designatory properties, and there will therefore be only two positions in data block 3. The codes for
some properties such as melt flow rate may require more than one letter or number. The results shall be classified
and coded in data block 3 as indicated in the tables and presented in the order that the designatory properties are
presented in subclause 5.6 and listed in annex A. A full stop shall be used to separate the code or codes in one
position from those in the next. When codes for a property are not included, this shall be indicated by the full stop
that normally would be included at the end of the codes for that position. The result is that two full stops in se-
0 IS0
IS0 12086=1:1995(E)
quence, “. “, show that codes for a property have not been included in the designation. A full stop is not used at
the end of the last position in the data block unless the last position is vacant.
If a property value falls on or near a range limit, the manufacturer shall state which range will designate the ma-
terial. If subsequent individual test values lie on, or on either side of, the range limit because of manufacturing
tolerances, the designation is not affected. The resin manufacturer shall set the codes in data block 3.
NOTE 6 Not all the combinations of the values of the designatory properties have to be provided for currently available
polymers. Not all combinations of designatory properties are possible for a polymer.
5.3.1 Transition temperatures
5.3.1 .l Melting-peak temperature
The melting-peak temperature shall be determined in accordance with the principles of ASTM D 3418 and
ASTM D 4591, modified by details given in IS0 12086-2. Melting-peak temperature shall be used as a designatoty
property for crystalline and semicrystalline polymers. Codes and ranges are given in table3.
Table 3 - Codes and ranges for thermal transition
temperatures in data block 3
Code Range of temperature ( “C)
A < 20
B 20 to < 30
C 30 to < 40
D 40 to < 50
E 50 to < 60
F 60 to < 70
G 70 to < 80
80 to < 90
H
90 to < 100
I
100 to < 110
J
K 110 to < 120
L 120 to < 130
M 130 to < 140
140 to < 150
N
0 150 to < 160
P 160 to < 170
0 170 to < 180
R 180 to < 190
S 190 to T 200 to <210
U 210 to <220
V 220 to < 230
W 230 to < 240
X 240 to < 250
Y 250 to < 260
Z 260 to < 270
1 270 to < 280
2 280 to < 290
3 290 to < 300
4 300to <310
5 310 to <320
6 320 to < 330
7 330 to < 340
8 340 to < 350
9 350 to < 360
2 360
Q IS0 IS0 12086=1:1995(E)
5.3.1.2 Glass transition temperature
The glass transition temperature shall be determined in accordance with the principles of ASTM D 3418, modified
by details given in IS0 12086-2. The glass transition temperature shall be used as a designatory property for
amorphous fluoropolymers. Codes and ranges are listed in table3.
5.3.2 Relative molecular mass
Standard specific gravity (SSG) is the property usually used to measure the relative molecular mass of the
polymers used in the PTFE industry. The melt mass-flow rate (MFR) is usually used for conventional thermoplastic
fluoropolymers. For PCTFE, the zero strength time (ZST) test is used. With MFR, the codes have three digits: a
number to indicate the value of the flow rate and two letters to indicate the test load and test temperature, re-
spectively.
5.3.2.1 Standard specific gravity (SSG)
SSG shall be determined in accordance with the procedure described in IS0 12086-2. Codes and ranges are listed
in table 4.
Table 4 - Codes for standard specific gravity (SSG) in
data block 3
Code 1 SSG
< 2,140
2,140 to < 2,160
2,160 to < 2,180
2,180 to < 2,200
2,200 to < 2,220
2,220 to < 2,240
3 2,240
5.3.2.2 Melt mass-flow rate and melt volume-flow rate
Melt mass-flow rate or melt volume-flow rate shall be determined in accordance with IS0 1133, modified by de-
tails provided in IS0 12086-2 and using test conditions selected from tables 6 and 7 of this part of IS0 12086. The
melt mass-flow rate is indicated in data block 3 by the codes and ranges given in table 5 followed by the codes
for temperature and load given in tables 6 and 7. If melt volume-flow rate is determined, the melt mass-flow rate
may be calculated from the volume-flow rate and the melt density of the polymer.
Table 5 - Codes for melt mass-flow rate (MFR) in data
block 3
Code MFR (g/IO min)
I
0 < 0,l
1 0,l to < 0,2
2 0,2 to < 0,5
3 0,5 to < I,0
I,0 to < 2,0
2,0 to < 5,0
6 5,0 to < IO,0
7 IO,0 to < 20,o
8 20,o to < 50,o
9 > 50,o
IS0 12086=1:1995(E)
Table 6 - Codes for MFR test temperature in data
block 3
Code Test temperature ( “C)
r
A 372 + 1
297 T 1
B
271,5-+ 1
C
265 +-I
D
230 T 1
E -
Table 7 - Codes for MFR test load in data block 3
Test load (kg)
Code
0,325
I,20
2,16
4 33
5,O
IO,0
12,5
21,6
31,6
5.3.2.3 Zero-strength time (ZST)
Zero-strength time shall be determined as described in ASTM D 1430 and the results coded as indicated in
table 8.
Table 8 - Codes for zero-strength time (ZST) in data
block 3
Code ZST (s)
115to 175to<300
300to <750
750to <2 500
3 2 500
5.3.3 Mechanical properties
Tensile strength, tensile yield stress, percentage elongation at break, and modulus properties shall be determined
in accordance with the principles of IS0 527-l and IS0 527-2, modified by details given in IS0 12086-2. Tables 9
to 12 provide the codes to use for each range of tensile strength (including specimen thickness for PTFE-S), tensile
yield stress, percentage elongation at break, and tensile modulus.
IS0 12086=1:1995(E)
Table 9 - Codes for tensile strength and tensile yield
stress in data block 3
Code Tensile strength and tensile yield stress (MPa)
A B 15to <20
C 20to <25
D
25to <30
E
30to <35
F
35to <40
G
40to <45
H
45to < 50
I 50to < 55
J 3 55
Table 10 - Codes for percentage elongation at break in
data block 3
Code Percentage elongation at break
A < 50
B
50 to < 100
C 100to<150
D
150to < 200
E
200to <250
F 250to <300
G 300to <350
H 350to <400
I 400to < 500
J 500to <600
K 600to <800
L
3 800
Table 11 - Codes for tensile modulus in data block 3
Code Tensile modulus (MPa)
< 500
500to <800
800to 1 200to < 1600
1 600to < 2 000
2 oooto < 3 000
3 oooto < 4000
4 OOOto < 6 000
> 6 000
Table 12 - Codes for specimen thickness for PTFE-S in
data block 3
Code Specimen thickness (mm)
I I I
< 0,125
0,125 to < 0,500
0,500 to < I,00
3 I,00
0 IS0
IS0 12086=1:1995(E)
5.3.4 Density
Density shall be determined in accordance with the principles of IS0 1183 as specified in IS0 12086-2. The codes
are listed in table 13.
- Codes for density in data block 3
Table 13
Code Density (g/cm3 at 23 "C)
A < I,6
B I,6 to < I,7
C I,7 to < I,8
D I,8 to < I,9
E 1,sto < 2,0
F 2,0 to < 2,l
2,l to < 2,2
G
2,2 to < 2,3
H
2,3 to < 2,4
I
2,4 to < 2,5
J
2,5 to < 3,0
K
L 3,oto < 3,5
M 3,5 to < 4,0
4,0 to < 4,5
N
0 4,5to < 5,0
P 5,oto < 5,5
5,5 to < 6,0
Q
6,0 to < 6,5
R
6,5 to < 7,0
S
2 7,O
T
5.3.5 Percentage fluoropolymer and surfactant
Percentage fluoropolymer and surfactant shall be determined in accordance with the procedures provided in
IS0 12086-2. The surfactant content shall be reported as the percentage by mass based on the content of dry
fluoropolymer. The percentage shall be coded in position 6 of data block 3 by combining the code-number for the
percentage fluoropolymer from table 14 with the code-letter for percentage of added surfactant from table 15.
Table 14 - Codes and ranges for percentage
fluoropolymer in dispersions in data block 3
Percentage fluoropolymer
Code
I I I
< 40
>40
r
Table 15 - Codes and ranges for added-surfactant
content in data block 3 (calculated as a percentage of the
mass of the polymer)
Code Percentage surfactant, minimum
A < 0,5
B 0,5 to < 2,5
C 2,5 to < 3,5
D 2 3,5
5.3.6 Particle size
Particle size shall be determined by the method described in IS0 12086-2. An appropriate method for particle size
depends upon the particular fluoropolymer. The methods include wet- or dry-sieve analysis, electric sensing-zone
0 IS0 IS0 12086=1:1995(E)
testing, and light scattering. Automated or other instruments that have been shown to provide equivalent results
shall be acceptable alternatives to the detailed procedures given in IS0 12086-2. Codes and ranges are given in
table 16.
Table 16 - Codes and ranges for particle size (50 %
retention) in data block 3
Code Particle size (pm)
II
0 < IO
1 IO to < 125
2 125to <250
3 250 to < 355
4 355to < 500
5 5ooto<710
6 710 to < I 000
>, 1 000
5.3.7 Bulk density
Bulk density shall be determined as described in IS0 12086-2. Codes and ranges are listed in table 17.
Table 17 - Codes and ranges for bulk density in
data block 3
Code Bulk density (g/l)
500 to 800
I 3 I ~~ :::i
5.3.8 Powder flow time
Powder flow time shall be determined as described in IS0 12086-2. Codes and ranges are listed in table 18.
Table 18 - Codes and ranges for powder flow time in
data block 3
Code Powder flow time (s)
0 Test inappropriate
1 < IO
2 lOto
3 > 20
5.3.9 Extrusion pressure
Extrusion pressure shall be determined by the procedure described.in IS0 12086-2. Codes and ranges are listed
in table 19.
Table 19 - Codes and ranges for extrusion pressure in
data block 3 (determined using a reduction ratio of 400 to 1)
Code Extrusion pressure (MPa)
,
1 < 15
2 15to35
> 35
0 IS0
IS0 12086=1:1995(E)
5.3.10 Contamination
Specifications for freedom from contamination may be established by agreement between the seller and the
purchaser.
5.4 Data block 4
Data block 4 is used to indicate:
- the type of filler or reinforcing material used as an additive;
- the physical form of the additive.
These items can be coded as specified in IS0 1043-2. Table20 lists codes for types and forms of typical additive
materials. The additive content may be coded by figures representative of the nominal percentage mass content
if required for clarity. Mixtures of
of the material separated from the code for the material itself by a hyphen “-‘I
materials, forms of materials (powder, fibre, etc.), or both are designated by combining the codes using a “+ ‘I sign.
Table 20 - Codes for fillers and reinforcing materials in data block 4
Code Form/structure
Code Material
B Bead, spheres, balls
B Boron
C Chips, cuttings
C Carbon
Cl Coke D Powder
F Fibre
c2 Partially graphitized carbon
C-G Graphite G Ground
H Whiskers
E Clay
K Knitted fabric
G Glass
L Layer
K Calcium carbonate
M Mat (thick)
M Mineral, metal
N Non-woven & thin
Ml Aluminium oxide
P Paper
M2 Bronze
S Rovings
M3 Calcium fluoride
T Scales, flakes
M4 Molybdenum disulfide
Stainless steel V Cord
M5
P Mica W Veneer
Silica X Not specified
Q
R Aramid Y Yarn
S Synthetic, organic Z Others
s-x X is the abbreviated term for a polymer used as
the filler
T Talcum
X Not specified
Zl In-house-recovered material
22 Reprocessed material
23 Postconsumer material
5.5 Data block 5
Use of this data block provides for specification of fluoropolymer materials in addition to designation. As mentioned
earlier in the general discussion of the data block system, this may be done by explicit reference to specific
properties, to a suitable national standard, or to a combination of the two. Test methods provided in IS0 12086-2
shall be used to determine the properties specified. The properties that may be specified are not limited to the
designatory properties. Codes and ranges are included in IS0 12086-2 for some properties that are often required
for specifications but that are not used for designation and, therefore, are not included in this part of IS0 12086.
Additional discussion and examples for guidance on the use of data block 5 are provided in clause 7.
0 IS0 IS0 120864:1995(E)
. Designatory properties for fluoropolymers
5.6.1 Designator-y properties applicable to all fluoropolymers
NOTE 7 For each polymer, usually only one of the properties listed in 5.6.1 .I to 5.6.1.4 will be selected as the designatory
property. An exception involves mechanical properties, for which one or more properties may be selected in accordance with
annex A or B.
5.6.1 .I Thermal transition temperatures, “C
Melting-peak temperature, Tm (for crystalline polymers)
Glass transition temperature, Ts (for amorphous polymers)
5.6.1.2 Relative molecular mass
Melt mass-flow rate (MFR), g/IO min (dg/min) (for conventional thermoplastic materials and PTFE-F)
Standard specific gravity (SSG) (for PTFE-type materials except PTFE-F)
Zero strength time (ZST), s (for PCTFE only)
5.6.1.3 Mechanical properties
Tensile stress at yield (yield stress), MPa (for PVDF and its copolymers)
Tensile stress at break (tensile strength), MPa (for other fluoropolymers)
Percentage elongation at break
Tensile modulus, MPa (for PVDF and its copolymers)
5.6.1.4 Density, g/cm3
5.6.2 Designatory properties specific to particular classes of fluoropolymer
5.6.2.1 Dispersions
5.6.2.1.1 Polymer in the dispersion expressed as a percentage of the mass of the dispersion
5.6.2.1.2 Surfactant in the dispersion expressed as a percentage of the mass of the polymer
PTFE and related polymers that usually are not processed by typical extrusion, injection moulding,
5.6.2.2
etc. (include the requirements of 5.6.2.2.1 for the polymer isolated from PTFE dispersions)
5.6.2.2.1 All properties from 5.6.1; in 5.6.1.2, use SSG
5.6.2.2.2 Particle or agglomerate size for PTFE powders
5.6.2.2.3 Bulk density for PTFE powders
5.6.2.2.4 Powder flow time for PTFE powders
Extrusion pressure for emulsion-polymer PTFE
5.6.2.2.5
IS0 12086=1:1995(E) Q IS0
5.6.2.3 Conventional thermoplastic fluoropolymers
Conventional thermosplastic fluoropolymers require use of all the properties listed in, 5.6,. ‘1. I.n 5;6.1.2, use melt-
flow rate (except for PCTFE where ZST shall be used).
6 Example of a designation
ETFE fluoropolymer material for general-purpose moulding and extrusion.
Designation: Thermoplastics IS0 12086-ETFE-K,GGl N,Y.5B5.B.H.,,,
Detailed explanation of the designation:
Description block Individual-item block
International Standard
1 1 2 1 3 1 4 1 5
(opt ion al) number block
-
Y.5BS.B.H. . , , ,
Thermoplastics IS0 12086 -ETFE-K, GGI N,
IS0 Standard
Data block 1: abbr. for ethylene/tetrafluoroethylene
Data block 2: Position 1: for “general”
Position 2: for “pellets”
Position 3: for “natural”
Data block 3: A full stop (.) separates each position.
Position 1: melting-peak temperature
Position 2: melt-flow rate
(three code items are required)
Position 3: tensile strength
Position 4: elongation at break
Position 5: density
(no code is included in this designation so a “.” is used)
Positions 6 and higher are not used for this material.
The comma at the end of data block 3 is included.
Data block 4: Not used, comma at end is included.
Data block 5: Not used, comma at end is included.
7 Specifications for fluoropolymers
Data block 5 provides for converting a designation into a specification. Four preferred ways to use data block 5
are outlined below with examples of each procedure. Other systems that will provi.de the information needed for
a specification may be used.
7.1 Convert a designation into a specification by placing an asterisk “*” before the code for a property in data
block 3 and then including an asterisk at a corresponding place in data block 5 to indicate that the data block limits
shown in the designation are specification limits and that the provisions in subclause 5.3 are not in effect. One
or more properties may be chosen in defining a specification.
EXAMPLE
Provide a designation and specification where each designator-y property is desired as part of the specification with
the specification limits equal to the range limits. For a PVDF homopolymer, suspension-polymerized, standard
grade for extrusion, sold as natural-coloured granules and having:
0 IS0
IS0 12086-1:1995(E)
- a melting point between 170 “C and 180 “C;
- an MFR between 5 and 10 when tested at 230 “C and 5 kg load;
- a tensile yield stress between 50 MPa and 55 MPa;
- an elongation at break between 50 % and 100 %;
- a tensile modulus between 2 000 MPa and 3 000 MPa and
- a density between I,7 g/cm3 and I,8 g/cm3.
(These properties describe a Type II PVDF in accordance with ASTM D 3222.)
The designation and specification is:
IS0 12086-PVDF-S,EGN,*Q.*6E5.*I.*B.*F.*C,,*.*.*.*.*.*
7.2 Convert a designation into a specification by including in data block 5 a property selected from the list in this
part of IS0 12086 or from part 2 of IS0 12086 and
...