Standard Test Method for Rate of Grease Penetration of Flexible Barrier Materials (Rapid Method)

SIGNIFICANCE AND USE
This test method is valuable in the development and selection of flexible barrier materials suited for use as grease barriers.
The test is rapid in comparison with other methods because of the extremely small quantity of oil required for detection (about 6 μg). The actual time to failure is a multiple of the values obtained by this test method. When permeation is through an absorbent structure such as kraft paper coated with polyethylene, the failure times will be longer and variable, depending on the variation in porosity and thickness of the structure.
SCOPE
1.1 This test method provides standard conditions for determining the rate of grease penetration of flexible barrier materials. Pinholes, which can be measured by a separate test, will increase the rate of grease penetration as determined by this test method.
1.2  This standard does not purport to address the safety problems 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
24-Jun-1982
Drafting Committee
Current Stage
Ref Project

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ASTM F119-82(2002) - Standard Test Method for Rate of Grease Penetration of Flexible Barrier Materials (Rapid Method)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F119–82 (Reapproved 2002)
Standard Test Method for
Rate of Grease Penetration of Flexible Barrier Materials
1
(Rapid Method)
This standard is issued under the fixed designation F119; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) 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 4.2 The test is rapid in comparison with other methods
because of the extremely small quantity of oil required for
1.1 This test method provides standard conditions for deter-
detection (about 6 µg). The actual time to failure is a multiple
mining the rate of grease penetration of flexible barrier
ofthevaluesobtainedbythistestmethod.Whenpermeationis
materials. Pinholes, which can be measured by a separate test,
through an absorbent structure such as kraft paper coated with
will increase the rate of grease penetration as determined by
polyethylene, the failure times will be longer and variable,
this test method.
depending on the variation in porosity and thickness of the
1.2 This standard does not purport to address the safety
structure.
problems associated with its use. It is the responsibility of the
user of this standard to establish appropriate safety and health
5. Apparatus
practices and determine the applicability of regulatory limita-
5.1 Backing Plates, ground-glass, 50 by 50 by 3-mm (2 by
tions prior to use.
1
2by ⁄8-in.), very fine grind on one side only.
2. Referenced Documents
NOTE 1—The ground-glass backing plates may be prepared from 2 by
2
1
2.1 ASTM Standards: 2-in. squares of ⁄8-in. plate glass by lightly grinding the surface with a
4
silicon carbide abrasive as follows: Place a piece of plate glass approxi-
D374 Test Methods for Thickness of Solid Electrical Insu-
mately 1ft square on a flat surface. Mix some abrasive and water in small
lation
quantitiestomakeafairlyuniformpaste.Placeoneofthe2-in.squaresof
D618 Practice for Conditioning Plastics for Testing
plate glass face down in the abrasive paste, and rotate it in a figure eight
3
D1898 Practice for Sampling of Plastics
movement with the finger tips using the slightest amount of pressure.
Whenthepastegetstooheavy,removetheplateglasssquarefromthebed
3. Summary of Test Method
and wash it to remove all traces of abrasive.Add more water to the thick
3.1 Flexible barrier materials, uncreased or creased by a
abrasive paste on the bed. (If necessary, add small amounts of abrasive.)
Continue the process until a uniform and light over-all etch is present on
standard procedure, are exposed on one side to grease con-
the face of the square. When a uniform etch has been obtained, wash the
tained in a weighted cotton patch.The time required to show a
square thoroughly to remove all traces of abrasive and pat dry with lens
visual change caused by wetting (reduction in light scattering)
tissue.
of a ground-glass back-up plate is measured.
5.2 Weights, 50-g, 20 mm (0.75 in.) in diameter at the base.
4. Significance and Use
5.3 Patches, rifle cleaning, cotton flannel.
5.4 Medicine dropper.
4.1 This test method is valuable in the development and
5.5 Forced-Circulation Oven, designed to maintain a test
selection of flexible barrier materials suited for use as grease
temperature of 40 or 60°C within 6 1°C.
barriers.
5.6 Creasing Surface, consisting of a flat rectangular plate
(for example, a piece of machined metal plate about 10 mm
thick or a piece of plate glass) with a width at least 75 mm (3
1
ThistestmethodisunderthejurisdictionofASTMCommitteeF02onFlexible
in.) on all sides.
Barrier Materials and is the direct responsibility of Subcommittee F02.10 on
5.7 Creasing Platen, consisting of a 5.5-kg (12-lb) square
Permeation.
metal bar with 65-mm (2.5-in.) sides and a flat base.
Current edition approved June 25, 1982. Published August 1982. Originally
approved in 1970. Last previous edition approved in 1976 as F119–76.
NOTE 2—The developers of this method believe that a standard crease
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 to the standard’s Document Summary page on
4
the ASTM website.
Carborundum No. 1000, manufactured by The Carborundum Co., has been
3
Withdrawn.
found satisfactory.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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F119–82 (2002)
is easier to obtain with a flat platen than with a roller. The weight of the
than cover the glass backing plate so premat
...

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