ISO 2559:2011

INTERNATIONAL ISO
STANDARD 2559
Fifth edition
2011-12-01
Textile glass — Mats (made from chopped
or continuous strands) — Designation
and basis for specifications
Verre textile — Mats (constitués de fils de base, coupés ou non) —
Désignation et base de spécifications
Reference number
©
ISO 2011
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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 2559 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites and
reinforcement fibres.
This fifth edition cancels and replaces the fourth edition (ISO 2559:2000), of which it constitutes a minor
revision. Clause 7 has been rewritten to eliminate the reference to ISO 1886, which has been withdrawn.
INTERNATIONAL STANDARD ISO 2559:2011(E)
Textile glass — Mats (made from chopped or continuous
strands) — Designation and basis for specifications
1 Scope
This International Standard provides a basis for specifications which is applicable only to textile glass mats that
are made from chopped or continuous strands bonded together by chemical or mechanical means and that are
used for the reinforcement of plastics.
It is not applicable to surfacing mats, staple-fibre mats or glass mats (or bats) of the type used for thermal and
acoustic insulation.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 291, Plastics — Standard atmospheres for conditioning and testing
ISO 472, Plastics — Vocabulary
ISO 1887, Textile glass — Determination of combustible-matter content
ISO 1888, Textile glass — Staple fibres or filaments — Determination of average diameter
ISO 2078, Textile glass — Yarns — Designation
ISO 2558, Textile glass chopped-strand mats for reinforcement of plastics — Determination of time of dissolution
of the binder in styrene
ISO 3342, Textile glass — Mats — Determination of tensile breaking force
ISO 3374, Reinforcement products — Mats and fabrics — Determination of mass per unit area
ISO 3616, Textile glass — Chopped-strand and continuous-filament mats — Determination of average
thickness, thickness under load and recovery after compression
ISO 5025, Reinforcement products — Woven fabrics — Determination of width and length
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 and the following apply.
3.1
characteristic properties
properties not normally subject to routine quality control in the mat production process
3.2
controlled properties
quantitative properties subject to routine quality control in the mat production process
3.3
visual properties
qualitative properties not necessarily subject to routine quality control in the mat production process
4 Technical requirements
4.1 General
A given mat shall be designed so as to satisfy the requirements of one or several applications. Essentially, a
specific mat is chosen so as to bring to the laminate its reinforcement properties under certain environmental
conditions, which may range from a dry inert to a wet corrosive atmosphere.
The expected product performance properties are generally not guaranteed as such due to the difficulty
in standardizing the conditions under which the mat is used (resin mix, cure system, laminate structure,
glass/resin/filler ratio, etc.). For this reason, the mat will be characterized in the specification by other guaranteed
properties which can be correlated with the desired practical laminating properties. The latter can be divided
into characteristic, controlled and visual properties, as defined in Clause 3.
Where required, the controlled properties (measured parameters) may be stated on certificates of conformity
or other quality control test reports.
The following is a proposed list of “characteristic” and “controlled” properties with, when applicable, the relevant
test method. The distinction between characteristic and controlled properties is indicative only, and may vary
for different mat products.
The specification for a given mat shall include the relevant properties among those listed hereafter, with
tolerances where applicable.
4.2 Characteristic properties
4.2.1 Resin compatibility
The resin(s) recommended for use with the mat.
4.2.2 Glass type
The glass type as defined in ISO 2078.
4.2.3 Filament diameter
The average diameter of the filaments constituting the strands in the mat. If necessary, the average filament
diameter may be determined in accordance with ISO 1888.
4.2.4 Strand linear density
It is not normally possible to determine the linear density of the strands in the mat since they might have been
split and/or chopped during the production process. Therefore the figure quoted is usually that of the input
strand, the linear density of which can only be determined by the mat manufacturer.
4.2.5 Strand length
The length of the strands, which may be either unchopped (continuous-filament mat) or chopped to a given
length, with the possibility of a mix of different specified lengths (chopped-strand mat).
4.2.6 Size ty
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