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ASTM D5052-00(2005)

(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
31-Mar-2005
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 - Standard Test Method for Permeability of Leather to Water Vapor
Effective Date
01-Apr-2005
Replaced By
ASTM D5052-00(2010) - Standard Test Method for Permeability of Leather to Water Vapor
Effective Date
01-Oct-2010

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ASTM D5052-00(2005) - Standard Test Method for Permeability of Leather to Water VaporASTM D5052-00(2005) - Standard Test Method for Permeability of Leather to Water Vapor
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ASTM D5052-00(2005) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 (Reaproved 2005)
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 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 5.4 Constant Temperature and Humidity Chamber, which
from the two systems may result in nonconformance with the may be either a laboratory, a cabinet, or a chamber with
standard. 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 5.5 Fan, capable of maintaining an air-flow over the surface
responsibility of the user of this standard to establish appro- of the Permeability Apparatus at a velocity of at least 500
priate safety and health practices and determine the applica- ft/min [254 m/s].
bility of regulatory limitations prior to use.
6. Reagents and Materials
2. Referenced Documents
6.1 Dessicant, consisting of fresh 8 mesh anhydrous cal-
2.1 ASTM Standards: cium chloride.
D1610 Practice for Conditioning Leather and Leather Prod- 6.2 Microcrystalline Wax, with a melting point of 70°C or
ucts for Testing lower.
3. Summary of Test Method 7. Procedure
3.1 In this test method the water vapor permeability is 7.1 All specimens shall be conditioned as prescribed in
measured after the test specimen is exposed to moist air on one Practice D1610. Conditioning other than as prescribed shall be
side and dry air on the other side. noted in the results.
7.2 Fill the aluminum cup with the desiccant to a height
4. Significance and Use
1 1
between ⁄8 and ⁄4 in. [3.2 to 6.4 mm] below the level of the
4.1 This test method is intended for use on all types of rim, as shown in Fig. 1. Leave enough space so that shaking of
leathers.
the dish, which must be done after each weighing, will mix the
4.2 Water vapor permeability is one of several factors desiccant. Place the specimen, with the grain side downward,
contributing to the relative comfort of footwear, handwear, and
over the desiccant and center with the cup. Place the template
garments. flat on the specimen and center as nearly as possible with the
cup. Apply a slight pressure to the template to ensure good
contact between the rim of the cup, the specimen, and the
This test method is under the jurisdiction ofASTM Committee D31 on Leather
template around the entire rim. Fill the groove formed by the
and is the direct responsibility of Subcommittee D31.07 on Physical Properties
lip of the cup and the edge of the template with melted wax that
Current edition approved April 1, 2005. Published May 2005. Originally
approved in 1990. Last previous edition approved in 2000 as D5052–00. DOI:
is allowed to harden before the template is removed. (The
10.1520/D5052-00R05.
removal of the template from the hardened wax is facilitated by
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
applying a coat of petroleum jelly to the edge and chilling the
contac
...

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