ASTM F119-82(1998)
(Test Method)Standard Test Method for Rate of Grease Penetration of Flexible Barrier Materials (Rapid Method)
Standard Test Method for Rate of Grease Penetration of Flexible Barrier Materials (Rapid Method)
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 .
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact
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Designation: F 119 – 82 (Reapproved 1998)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Rate of Grease Penetration of Flexible Barrier Materials
(Rapid Method)
This standard is issued under the fixed designation F 119; 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 (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 through an absorbent structure such as kraft paper coated with
polyethylene, the failure times will be longer and variable,
1.1 This test method provides standard conditions for deter-
depending on the variation in porosity and thickness of the
mining the rate of grease penetration of flexible barrier
structure.
materials. Pinholes, which can be measured by a separate test,
will increase the rate of grease penetration as determined by
5. Apparatus
this test method.
5.1 Backing Plates, ground-glass, 50 by 50 by 3-mm (2 by
1.2 This standard does not purport to address the safety
2by ⁄8-in.), very fine grind on one side only.
problems associated with its use. It is the responsibility of the
user of this standard to establish appropriate safety and health
NOTE 1—The ground-glass backing plates may be prepared from 2 by
practices and determine the applicability of regulatory limita- 2-in. squares of ⁄8-in. plate glass by lightly grinding the surface with a
silicon carbide abrasive as follows: Place a piece of plate glass approxi-
tions prior to use.
mately 1ft square on a flat surface. Mix some abrasive and water in small
quantities to make a fairly uniform paste. Place one of the 2-in. squares of
2. Referenced Documents
plate glass face down in the abrasive paste, and rotate it in a figure eight
2.1 ASTM Standards:
movement with the finger tips using the slightest amount of pressure.
D 374 Test Methods for Thickness of Solid Electrical Insu-
When the paste gets too heavy, remove the plate glass square from the bed
lation
and wash it to remove all traces of abrasive. Add more water to the thick
D 618 Practice for Conditioning Plastics and Electrical 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
Insulating Materials for Testing
the face of the square. When a uniform etch has been obtained, wash the
D 1898 Practice for Sampling of Plastics
square thoroughly to remove all traces of abrasive and pat dry with lens
tissue.
3. Summary of Test Method
5.2 Weights, 50-g, 20 mm (0.75 in.) in diameter at the base.
3.1 Flexible barrier materials, uncreased or creased by a
5.3 Patches, rifle cleaning, cotton flannel.
standard procedure, are exposed on one side to grease con-
5.4 Medicine dropper.
tained in a weighted cotton patch. The time required to show a
5.5 Forced-Circulation Oven, designed to maintain a test
visual change caused by wetting (reduction in light scattering)
temperature of 40 or 60°C within 6 1°C.
of a ground-glass back-up plate is measured.
5.6 Creasing Surface, consisting of a flat rectangular plate
4. Significance and Use
(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
4.1 This test method is valuable in the development and
in.) on all sides.
selection of flexible barrier materials suited for use as grease
5.7 Creasing Platen, consisting of a 5.5-kg (12-lb) square
barriers.
metal bar with 65-mm (2.5-in.) sides and a flat base.
4.2 The test is rapid in comparison with other methods
because of the extremely small quantity of oil required for
NOTE 2—The developers of this method believe that a standard crease
detection (about 6 μg). The actual time to failure is a multiple
is easier to obtain with a flat platen than with a roller. The weight of the
of the values obtained by this test method. When permeation is platen was selected to conform to the weight loading per inch of crease in
TAPPI T465 sm-52. Creasing of Paper for Water Vapor Permeability
Tests.
This test method is under the jurisdiction of ASTM Committee F-2 on Flexible
5.8 Flat Strip of wood or metal to give the specimen a
Barrier Materials and is the direct responsibility of Subcommittee F02.30 on Test
Methods.
Current edition approved June 25, 1982. Published August 1982. Originally
published as F 119 – 70. Last previous edition F 119 – 76. Carborundum No. 1000, manufactured by The Carborundum Co., has been
Annual Book of ASTM Standards, Vols 10.01 and 15.09. found satisfactory.
3 6
Annual Book of ASTM Standards, Vol 08.01. Obtainable from the Technical Association of the Pulp and Paper Industry,
Annual Book of ASTM Standards, Vol 08.02. Technology Park/Atlanta, P.O. Box 105113, Atlanta, GA 30348.
NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬replaced¬by¬a¬new¬version¬or¬discontinued.¬
Contact¬ASTM¬International¬(www.astm.org)¬for¬the¬latest¬information.¬
F119
preliminary light crease. 8.2 Cut the cotton flannel rifle cleaning patches into 20-mm
5.9 Thickness capable of measuring thickness of specimens (0.75-in.) diameter disks to just fit under the 50-g weight.
in compliance with Test Methods D 374. 8.3 Place two cotton flannel disks on top of each other at the
center of the test specimen.
6. Reagents
8.4 Place the 50-g weight on the patches and preheat the
6.1 Animal Oil (lard).
entire assembly (glass, test specimen, cotton disks, and weight)
6.2 Mineral Oil.
to the desired test temperature (40 or 60 6 1°C) for 30 min.
6.3 Vegetable Oil.
This is particularly necessary when short failure times are
6.4 Other reagents, such as butter, tallow, and oils. These
expected, where 6 30 min would be critical.
may be substituted for standard reagents listed above to
8.5 With the assembly still in the oven, remove the weights
simulate actual end-use conditions. Standard reagents are,
and add six drops of reagent, oil, or grease, to the cotton disks.
however, recommended for purposes of interlaboratory com-
If necessary, melt the grease so it can be added dropwise.
parisons.
Periodic addition may be required when volatile reagents are
used under the option of 6.4.
7. Sampling, Test Specimens, and Test Unit
8.6 Replace the 50-g weights on the oiled patches.
7.1 No single procedure for sampling is adequate for all
8.7 Close the oven door and note the time.
situations. Sampling, however, should be designed to provide
8.8 At periodic intervals, depending on the length of time to
the desired result in each situation. Therefore, Practice D 1898
anticipated failure (that is, every 15 min for the first hour;
is recommended as a guide in designing appropriate sampling
every 30 min for the next 4 h; then at convenient intervals), lift
procedures for the purposes at hand.
the test specimen, cotton disk, and weight from the ground-
...
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