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ASTM D5052-00(2010)

(Test Method)

Standard Test Method for Permeability of Leather to Water Vapor

Standard Test Method for Permeability of Leather to Water Vapor

SIGNIFICANCE AND USE
This test method is intended for use on all types of leathers.
Water vapor permeability is one of several factors contributing to the relative comfort of footwear, handwear, and garments.
SCOPE
1.1 This test method covers the determination of the permeability of leather to water vapor by measuring the rate at which water vapor passes through a test specimen. This test method does not apply to wet blue.
1.2 The values stated in either inch-pound or SI 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 nonconformance 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.

General Information

Status
Historical
Publication Date
30-Sep-2010
ICS
59.140.30 - Leather and furs
Technical Committee
D31 - Leather
Drafting Committee
D31.07 - Physical Properties
Current Stage
Ref Project

Relations

Replaces
ASTM D5052-00(2005) - Standard Test Method for Permeability of Leather to Water Vapor
Effective Date
01-Oct-2010

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ASTM D5052-00(2010) - Standard Test Method for Permeability of Leather to Water VaporASTM D5052-00(2010) - Standard Test Method for Permeability of Leather to Water Vapor
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ASTM D5052-00(2010) - Standard Test Method for Permeability of Leather to Water Vapor
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5052 − 00 (Reapproved 2010)
Standard Test Method for
Permeability of Leather to Water Vapor
This standard is issued under the fixed designation D5052; 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 5. Apparatus
1.1 This test method covers the determination of the perme-
5.1 Analytical Balance, accurate to 0.001 g.
ability of leather to water vapor by measuring the rate at which
5.2 Permeability Apparatus, as shown in Fig. 1. It shall
water vapor passes through a test specimen. This test method
consist of an aluminum cup having approximately the dimen-
does not apply to wet blue.
sions shown in Fig. 2 and a template, ⁄8 in. thick and 2.225 6
2 2
1.2 The values stated in either inch-pound or SI units are to
0.025 in. in diameter [area is 0.0025 m,or25cm ], made of
be regarded separately as standard. The values stated in each
brass or other non-corrosive metal.
system may not be exact equivalents, therefore, each system
5.3 Steel Stamping Die, 2.75 6 0.1 in. in diameter.
shall be used independently of the other. Combining values
from the two systems may result in nonconformance with the
5.4 Constant Temperature and Humidity Chamber, which
standard. may be either a laboratory, a cabinet, or a chamber with
circulated air maintained at standard condition (23 6 1°C and
1.3 This standard does not purport to address all of the
50 6 4 % relative humidity).
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.5 Fan, capable of maintaining an air-flow over the surface
priate safety and health practices and determine the applica-
of the Permeability Apparatus at a velocity of at least 500
bility of regulatory limitations prior to use.
ft/min [254 m/s].
2. Referenced Documents
6. Reagents and Materials
2.1 ASTM Standards:
6.1 Dessicant, consisting of fresh 8 mesh anhydrous cal-
D1610 Practice for Conditioning Leather and Leather Prod-
cium chloride.
ucts for Testing
6.2 Microcrystalline Wax, with a melting point of 70°C or
3. Summary of Test Method
lower.
3.1 In this test method the water vapor permeability is
measured after the test specimen is exposed to moist air on one
7. Procedure
side and dry air on the other side.
7.1 All specimens shall be conditioned as prescribed in
Practice D1610. Conditioning other than as prescribed shall be
4. Significance and Use
noted in the results.
4.1 This test method is intended for use on all types of
7.2 Fill the aluminum cup with the desiccant to a height
leathers.
1 1
between ⁄8 and ⁄4 in. [3.2 to 6.4 mm] below the level of the
4.2 Water vapor permeability is one of several factors
rim, as shown in Fig. 1. Leave enough space so that shaking of
contributing to the relative comfort of footwear, handwear, and
the dish, which must be done after each weighing, will mix the
garments.
desiccant. Place the specimen, with the grain side downward,
over the desiccant and center with the cup. Place the template
This test method is under the jurisdiction ofASTM Committee D31 on Leather
flat on the specimen and center as nearly as possible with the
and is the direct responsibility of Subcommittee D31.07 on Physical Properties
cup. Apply a slight pressure to the template to ensure good
Current edition approved Oct. 1, 2010. Published November 2010. Originally
contact between the rim of the cup, the specimen, and the
approved in 1990. Last previous edition approved in 2005 as D5052 - 00 (2005).
DOI: 10.1520/D5052-00R10.
template around the entire rim. Fill the groove formed by the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
lipofthecupandtheedgeofthetemplatewithmeltedwaxthat
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
is allowed to harden before the template is removed. (The
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. removal of the template from the h
...

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