ASTM D1776/D1776M-15
(Practice)Standard Practice for Conditioning and Testing Textiles
Standard Practice for Conditioning and Testing Textiles
ABSTRACT
This practice covers the conditioning and testing of textiles in those instances where such conditioning is specified in a test method. Because prior exposure of textiles to high or low humidity may affect the equilibrium moisture pick-up, a procedure also is given for preconditioning the material when specified. The equipments to be used in the conditioning and testing of textiles shall include conditioning room or chamber, psychrometer ventilated by aspiration, preconditioning cabinet, room, or suitable container, balance, and multiple shelf conditioning rack. The conditioning room or chamber shall consist of equipment for maintaining the standard atmosphere for testing textiles throughout the room or chamber within the tolerances given and including facilities for circulating air over all surfaces of the exposed sample or specimen and equipment for recording the temperature and relative humidity of the air in the conditioning room or chamber. Samples or specimens requiring preconditioning shall be brought to a relatively low moisture content in a specified atmosphere. Samples or specimens requiring conditioning shall be brought to moisture equilibrium for testing in the standard atmosphere for testing textiles, or when required.
SCOPE
1.1 This practice covers the conditioning and testing of textiles when conditioning is specified in a test method. Because prior exposure of textiles to high or low humidity may affect moisture pick-up equilibrium, a procedure also is given for preconditioning the material when required.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D1776/D1776M − 15
StandardPractice for
1
Conditioning and Testing Textiles
This standard is issued under the fixed designation D1776/D1776M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope E337 Test Method for Measuring Humidity with a Psy-
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
1.1 This practice covers the conditioning and testing of
peratures)
textiles when conditioning is specified in a test method.
2.2 ISO Standard:
Becausepriorexposureoftextilestohighorlowhumiditymay
ISO 139 Textiles StandardAtmosphere for Conditioning and
affect moisture pick-up equilibrium, a procedure also is given
3
Testing
for preconditioning the material when required.
1.2 The values stated in either SI units or inch-pound units
3. Terminology
are to be regarded separately as standard. The values stated in
3.1 For terminology related to conditioning see Terminol-
each system may not be exact equivalents; therefore, each
ogy D4920.
system shall be used independently of the other. Combining
3.2 The following terms are relevant to this standard:
values from the two systems may result in non-conformance
accelerated conditioning, moisture content, moisture
with the standard.
equilibrium, moisture equilibrium for preconditioning, mois-
1.3 This standard does not purport to address all of the
ture equilibrium for testing, precondition, standard atmosphere
safety concerns, if any, associated with its use. It is the
for preconditioning textiles, standard atmosphere for testing
responsibility of the user of this standard to establish appro-
textiles, uncertainty of (in) measurement.
priate safety and health practices and determine the applica-
3.3 For definitions of other textile terms used in this
bility of regulatory limitations prior to use.
standard see Terminology D123.
2. Referenced Documents
4. Summary of Practice
2
2.1 ASTM Standards:
4.1 Samples or specimens requiring preconditioning are
D123 Terminology Relating to Textiles
brought to relatively low moisture content in a specified
D618 Practice for Conditioning Plastics for Testing
atmosphere. Samples or specimen not requiring pre-
D885 Test Methods for Tire Cords, Tire Cord Fabrics, and
conditioning are brought to moisture equilibrium (specific to
Industrial Filament Yarns Made from Manufactured
fiber-content) according to the standard atmosphere for testing
Organic-Base Fibers
textiles as shown in Table 1.
D4920 Terminology Relating to Conditioning, Chemical,
and Thermal Properties
4.2 Understanding of tolerance and uncertainty of measure-
D5867 Test Methods for Measurement of Physical Proper-
ment has evolved since the creation of the original version of
ties of Raw Cotton by Cotton Classification Instruments
this standard. Due to this new understanding, uncertainty of
D7269 Test Methods for Tensile Testing of Aramid Yarns
measurement has been taken into account in determining
D7744 Test Methods for Tensile Testing of High Perfor-
acceptable tolerances for the standard atmosphere for testing
mance Polyethylene Tapes
textiles as shown in Table 1.
5. Significance and Use
1
ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesand
5.1 The conditioning prescribed in this practice is designed
is the direct responsibility of Subcommittee D13.51 on Conditioning, Chemical and
Thermal Properties.
to obtain reproducible results on textiles and textile products.
Current edition approved Feb. 1, 2015. Published March 2015. Originally
Results of tests obtained on these materials under uncontrolled
ε1
approved in 1960. Last previous edition approved in 2008 as D1776–08 . DOI:
atmospheres may not be comparable with each other. In
10.1520/D1776_D1776M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer tot he standard’s Document summary page on Available fromAmerican National Standards Institute, 11 W. 42nd Street, 13th
the ASTM website. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D1776/D1776M − 15
TABLE 1 Standard Atmospheres for Conditioning and Testing General Textiles
A
Temperature,
Preconditioning
Material Relative Humidity % Time (h), min ASTM Standard
Time (h), min °C [°F]
Conditioning
B
Textiles, general 20±2[68±4] 65±5 D1776
C
Textiles, specific
Cotton fiber clas
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D1776 − 08 D1776/D1776M − 15
Standard Practice for
1
Conditioning and Testing Textiles
This standard is issued under the fixed designation D1776;D1776/D1776M; the number immediately following the designation indicates
the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1
ε NOTE—Table 1 was corrected editorially in July 2009.
1. Scope
1.1 This practice covers the conditioning and testing of textiles when conditioning is specified in a test method. Because prior
exposure of textiles to high or low humidity may affect moisture pick-up equilibrium, a procedure also is given for preconditioning
the material when required.
1.2 The values stated the text are in SI units. Inch-pound units are shown in parentheses. in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in each system aremay not be exact equivalents; therefore, each system
shall be used independently of the other. Combining values from the two systems may result in nonconformance to a specification.
non-conformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D618 Practice for Conditioning Plastics for Testing
D885 Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base
Fibers
D1776 Practice for Conditioning and Testing Textiles
D4920 Terminology Relating to Conditioning, Chemical, and Thermal Properties
D5867 Test Methods for Measurement of Physical Properties of Raw Cotton by Cotton Classification Instruments
D7269 Test Methods for Tensile Testing of Aramid Yarns
D7744 Test Methods for Tensile Testing of High Performance Polyethylene Tapes
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
2.2 ISO Standard:
3
ISO 139 Textiles Standard Atmosphere for Conditioning and Testing
3. Terminology
3.1 Definitions:
3.1.1 accelerated conditioning, n— a process that uses humidity generation and precise temperature controls to rapidly bring
a textile to equilibrium in a standard atmosphere.
1
This practice is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.51 on Conditioning and, Conditioning,
Chemical and Thermal Properties.
Current edition approved Aug. 1, 2008Feb. 1, 2015. Published October 2008March 2015. Originally approved in 1998. Last previous edition approved in 20042008 as
ε1
D1776–04.D1776–08 . DOI: 10.1520/D1776-08E01.10.1520/D1776_D1776M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer tot he standard’s Document summary page on the ASTM website.
3
Available from American National Standards Institute, 11 W. 42nd Street, 13th Floor, New York, NY 10036.
3.1.1.1 Discussion—
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D1776/D1776M − 15
Accelerated conditioning may be achieved in closed cabinets, rooms or process lines designed such that equilibrium can be
achieved in a much shorter time, such as 2 to 10 minutes, compared to typical conditioning times.
3.1.2 moisture content, n—that part of the total mass of a material that is absorbed or adsorbed water, expressed as a percentage
of the total mass.
3.1.2.1 Discussion—
The total mass is the original mass comprising the dry substance plus any water present. The word water as used in these definitions
refers to the compound chemically defined as H O. The terms water and moisture frequently are used interchangeably in the
2
literature and the trade, but the term moisture is sometimes considered to include other volatile matter.
3.1.3 moisture equilibrium, n— the state of condition a textile reaches when it no longer takes up moisture from, or gives up
moisture to, th
...
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