ASTM D2692/D2692M-15

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2692/D2692M − 15
Standard Test Method for
Air Permeability of Tire Fabrics, Tire Cord Fabrics, Tire
1
Cord, and Yarns
This standard is issued under the fixed designation D2692/D2692M; 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.
1. Scope 3.1.1 Fordefinitionsoftermsrelatingtotirecord,beadwire,
hose wire, and tire cord fabrics, refer to Terminology D6477.
1.1 This test method covers the determination of longitudi-
3.1.1.1 Thefollowingtermsarerelevanttothisstandard:air
nalairpermeabilityfortirefabrics,tirecordfabrics,tirecords,
permeability, chafer fabric, test panel, in air permeability test,
or yarns embedded in cured rubber compound. This test
tire cord, tire cord fabric, tire fabric, vulcanization, wickproof,
method is designed to demonstrate the effectiveness of fabric
in tire fabric, tire cord fabric, tire cord, or yarn.
treatments intended to prevent air permeability. This test
3.1.2 For definitions of other terms related to textiles, refer
method is applicable to fabrics made from all types of fibers
to Terminology D123.
with all types of rubber compound.
3.1.2.1 The following terms are relevant to this standard:
1.2 The values stated in either SI units or inch-pound units
skein and yarn.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4. Summary of Test Method
system shall be used independently of the other. Combining
4.1 Fabric specimens are embedded in a rubber compound
values from the two systems may result in non-conformance
and air pressure is applied to freshly exposed yarn ends.
with the standard.
Detergent solution is applied to the opposite end of the yarns
1.3 This standard does not purport to address all of the
which have also been freshly exposed. Air permeability is
safety concerns, if any, associated with its use. It is the
indicated by continuous formation of air bubbles in the
responsibility of the user of this standard to establish appro-
detergent solution due to air passing along the axis of a yarn.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. See the Note in
5. Significance and Use
11.1.
5.1 This test method is considered satisfactory for the
2. Referenced Documents
acceptance testing of commercial shipments of tire fabrics
2
sincethistestmethodhasbeenusedextensivelyinthetradefor
2.1 ASTM Standards:
acceptance testing. This test method is also considered satis-
D123Terminology Relating to Textiles
factory for quality control.
D3182PracticeforRubber—Materials,Equipment,andPro-
5.1.1 In case of a dispute arising from differences in
cedures for Mixing Standard Compounds and Preparing
reportedtestresultswhenusingthistestmethodforacceptance
Standard Vulcanized Sheets
testing of commercial shipments, the purchaser and the sup-
D6477TerminologyRelatingtoTireCord,BeadWire,Hose
plier should conduct comparative tests to determine if there is
Reinforcing Wire, and Fabrics
a statistical bias between their laboratories. Competent statis-
3. Terminology
tical assistance is recommended for the investigation of bias.
As a minimum, the two parties should take a group of test
3.1 Definitions:
specimens that are as homogeneous as possible and that are
from a lot of material of the type in question. The test
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD13onTextiles
specimensshouldthenberandomlyassignedinequalnumbers
and is the direct responsibility of Subcommittee D13.19 on Industrial Fibers and
toeachlaboratoryfortesting.Theaverageresultsfromthetwo
Metallic Reinforcements.
laboratories may be compared using appropriate statistical
Current edition approved Feb. 1, 2015. Published April 2015. Originally
analysis and an acceptable probability level chosen by the two
approved in 1968. Last previous edition approved in 2014 as D2692–10(2014).
DOI: 10.1520/D2692_D2692M-15.
parties before the testing is begun. If a bias is found, either its
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cause must be found and corrected or the purchaser and the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
supplier must agree to interpret future test results with consid-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. eration to the known bias.
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