ASTM D1776-08e1
(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 the text are in SI units. Inch-pound units are shown in parentheses. The values stated in each system are not 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.
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 − 08
StandardPractice for
1
Conditioning and Testing Textiles
This standard is issued under the fixed designation D1776; 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 2.2 ISO Standard:
ISO 139 Textiles StandardAtmosphere for Conditioning and
1.1 This practice covers the conditioning and testing of
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Testing
textiles when conditioning is specified in a test method.
Becausepriorexposureoftextilestohighorlowhumiditymay
3. Terminology
affect moisture pick-up equilibrium, a procedure also is given
for preconditioning the material when required.
3.1 Definitions:
3.1.1 accelerated conditioning, n— a process that uses
1.2 The values stated the text are in SI units. Inch-pound
humidity generation and precise temperature controls to rap-
units are shown in parentheses. The values stated in each
idly bring a textile to equilibrium in a standard atmosphere.
system are not exact equivalents; therefore, each system shall
be used independently of the other. Combining values from the
3.1.1.1 Discussion—Accelerated conditioning may be
two systems may result in nonconformance to a specification.
achieved in closed cabinets, rooms or process lines designed
such that equilibrium can be achieved in a much shorter time,
1.3 This standard does not purport to address all of the
such as 2 to 10 minutes, compared to typical conditioning
safety concerns, if any, associated with its use. It is the
times.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.1.2 moisture content, n—that part of the total mass of a
bility of regulatory limitations prior to use.
material that is absorbed or adsorbed water, expressed as a
percentage of the total mass.
2. Referenced Documents
3.1.2.1 Discussion—The total mass is the original mass
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2.1 ASTM Standards:
comprising the dry substance plus any water present.The word
D123 Terminology Relating to Textiles
water as used in these definitions refers to the compound
D618 Practice for Conditioning Plastics for Testing
chemically defined as H O. The terms water and moisture
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D885 Test Methods for Tire Cords, Tire Cord Fabrics, and
frequently are used interchangeably in the literature and the
Industrial Filament Yarns Made from Manufactured
trade, but the term moisture is sometimes considered to include
Organic-Base Fibers
other volatile matter.
D1776 Practice for Conditioning and Testing Textiles
D4920 Terminology Relating to Conditioning, Chemical, 3.1.3 moisture equilibrium, n— the state of condition a
and Thermal Properties textile reaches when it no longer takes up moisture from, or
D7269 Test Methods for Tensile Testing of Aramid Yarns gives up moisture to, the surrounding atmosphere.
E337 Test Method for Measuring Humidity with a Psy-
3.1.3.1 Discussion—Superficial equilibrium is reached very
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
rapidly when air comes into contact with the outer surfaces of
peratures)
a textile. Moisture equilibrium can be reached in a reasonable
timeonlyiftheairtowhichthesampleisexposedisinmotion.
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Moisture equilibrium, with air temperature (in motion) and
ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesand
is the direct responsibility of Subcommittee D13.51 on Conditioning and, Chemical
relative humidity controlled to prescribed levels, is achieved
and Thermal Properties.
when successive weighings do not show a progressive change
Current edition approved Aug. 1, 2008. Published October 2008. Originally
in mass greater than the tolerance established for the textile.
approved in 1998. Last previous edition approved in 2004 as D1776–04. DOI:
10.1520/D1776-08E01.
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 − 08
3.1.4 moisture equilibrium, for preconditioning, n—the 5. Significance and Use
moisture state of a textile sample(s) or specimen(s) reached
5.1 The conditioning prescribed in this practice is designed
after expo
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
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Designation:D 1776–04 Designation:D 1776–08
Standard Practice for
1
Conditioning and Testing Textiles
This standard is issued under the fixed designation D 1776; 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 Department of Defense.
1
´ NOTE—Table 1 was corrected editorially in July 2009.
1. Scope
1.1 This practice covers the conditioning and testing of textiles in those instances where such when conditioning is specified
in a test method. Because prior exposure of textiles to high or low humidity may affect the equilibrium moisture pick-up
equilibrium, a procedure also is given for preconditioning the material when specified.required.
1.2 The values stated in either SI units or inch-pound units the text are to be regarded separately as the standard. Within the
text, the inch-pound in SI units. Inch-pound units are shown in parentheses. The values stated in each system are not exact
equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result
in nonconformance with theto a specification.
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
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2.1 ASTM Standards:
D123
D 123 Terminology Relating to Textiles
D578Specification for Glass Fiber Strands
D 618 Practice for Conditioning Plastics and Electrical Insulating Materials for Testing Practice for Conditioning Plastics for
Testing
D 885 Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns and Cords Made from Man-
MadeManufactured Organic-Base Fibers
D 1776 Practice for Conditioning Textiles for Testing
D4920Terminology Relating to Moisture in Textiles Practice for Conditioning and Testing Textiles
D 4920 Terminology Relating to Conditioning, Chemical, and Thermal Properties
D 7269 Test Methods for Tensile Testing of Aramid Yarns
E 337 Test Method for Measuring Humidity Withwith a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
2.2 ISO Standard:
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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.
3.1.1.1 Discussion—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.
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This practice is under the jurisdiction ofASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.51 on Conditioning and, Chemical and
Thermal Properties.
Current edition approvedMarch 1, 2004. Published March 2004. Originally approved in 1998. Last previous edition approved in 1998 as D1776–98.
Current edition approved Aug. 1, 2008. Published October 2008. Originally approved in 1998. Last previous edition approved in 2004 as D 1776–04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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D 1776–08
TABLE 1 Standard Atmospheres for Testing Various Materials
Material Temperature Relative Humidity % ASTM Standard
Textiles, general, other than nonwoven, 21 6 1°C (70 6 2°F) 65 6 2 D 1776
tire cords and glass fiber
Nonwovens (includes paper) 23 6 1°C (73.4 6 1.8°F) 50 6 2 D 1776
Plastics and electrical insulating 23 6 2°C (73.4 6 3.6°F) 50 6 5 D 618
materials
Glass fiber products:
Plastic applications 23 6 2°C (73.4 6 3.6°F) 50 6 5 D 618
Textile applications 21 6 1°C (70 6 2°C) 65 6 5 D 1776
Textile applications 21 6 1°C (70 6 2°
...
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