ASTM F3152-15
(Test Method)Standard Test Method for Determining Abrasion Resistance of Inks and Coatings on Substrates Using Norman Tool “WA-1010 Wet Abrader”
Standard Test Method for Determining Abrasion Resistance of Inks and Coatings on Substrates Using Norman Tool “WA-1010 Wet Abrader”
SIGNIFICANCE AND USE
3.1 Membrane switch keys are subjected to repeated actuations, usually by a human finger. This can transfer body oil, hand creams, automotive fluids and so forth. Materials are often subjected to other conditions (for example, wiping, cleaning, rubbing) during handling, end-use, shipment, or storage that may cause abrasion damage. The result may be a significant removal of the coatings, text, or decorative inks.
3.2 This test method is applicable to a wide range of materials. The main criterion is that the abrasion process produces visible wear or breakthrough of the surface being tested.
3.3 The amount of abrasion damage to a surface is dependent on numerous variables. This test method provides a way of comparing relative abrasion resistance and the effect of chemicals on inks, coatings, and substrates. In no way do the results provide a correlation value of the number of human finger touches before coating failure. It only provides a means to compare results of tests performed using the same equipment, abrasive materials and loading conditions.
3.4 The test method can be used for quality control purposes, as a research and development tool, to evaluate material combinations for a given application, or for the comparison of materials with relatively similar properties and the effect of chemicals on the abrasion resistance.
SCOPE
1.1 This test method describes the procedure for subjecting inks or coatings on membrane switches to an abrasive medium, with or without the application of chemicals, at a specified force.
1.2 Within certain limitations, as described in this standard, this test method is applicable for materials including, but not limited to: printed or coated polyester, polycarbonate, and silicone rubber. The samples can be either flat or contoured.
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.
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Designation: F3152 − 15
StandardTest Method for
Determining Abrasion Resistance of Inks and Coatings on
1 2
Substrates Using Norman Tool “WA-1010 Wet Abrader ”
This standard is issued under the fixed designation F3152; 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 oil, hand creams, automotive fluids and so forth. Materials are
often subjected to other conditions (for example, wiping,
1.1 This test method describes the procedure for subjecting
cleaning, rubbing) during handling, end-use, shipment, or
inks or coatings on membrane switches to an abrasive medium,
storage that may cause abrasion damage. The result may be a
with or without the application of chemicals, at a specified
significant removal of the coatings, text, or decorative inks.
force.
3.2 This test method is applicable to a wide range of
1.2 Within certain limitations, as described in this standard,
materials. The main criterion is that the abrasion process
this test method is applicable for materials including, but not
produces visible wear or breakthrough of the surface being
limited to: printed or coated polyester, polycarbonate, and
tested.
silicone rubber. The samples can be either flat or contoured.
3.3 The amount of abrasion damage to a surface is depen-
1.3 This standard does not purport to address all of the
dent on numerous variables. This test method provides a way
safety concerns, if any, associated with its use. It is the
of comparing relative abrasion resistance and the effect of
responsibility of the user of this standard to establish appro-
chemicals on inks, coatings, and substrates. In no way do the
priate safety and health practices and determine the applica-
results provide a correlation value of the number of human
bility of regulatory limitations prior to use.
finger touches before coating failure. It only provides a means
to compare results of tests performed using the same
2. Terminology
equipment, abrasive materials and loading conditions.
2.1 Definitions:
3.4 The test method can be used for quality control
2.1.1 final breakthrough, n—the number of cycles until
purposes, as a research and development tool, to evaluate
complete removal of the first surface ink or coating being
material combinations for a given application, or for the
tested.
comparison of materials with relatively similar properties and
2.1.2 membrane switch, n—a momentary switching device
the effect of chemicals on the abrasion resistance.
in which at least one contact is on, or made of, a flexible
substrate.
4. Interferences
2.1.3 wear limit, n—in testing membrane switches, the
4.1 Inconsistent wear can occur which will compromise the
number of cycles until an underlying layer of different color
results. Caution is necessary to ensure the mounting method
may be seen through the first layer (not applicable for
does not deflect the specimen, which may influence the wear
transparent coatings).
characteristics.
3. Significance and Use
4.2 Contoured surfaces can be tested but results may be
more difficult to duplicate and some equipment is not designed
3.1 Membrane switch keys are subjected to repeated
to test non-flat surfaces.
actuations, usually by a human finger. This can transfer body
4.3 Whenever possible, a smooth surface is preferred. Extra
care should be taken when evaluating a non-uniform surface
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The Norman Tool “RCA”Abrader is covered by a patent. Interested parties are
(that is, rough surface), and for the user to recognize potential
invited to submit information regarding the identification of an alternative(s) to this
variations between specimens.
patented item to theASTM International Headquarters.Your comments will receive
careful consideration at a meeting of the responsible technical committee, which
you may attend.
5. Apparatus
2
This test method is under the jurisdiction of ASTM Committee F01 on
Electronics and is the direct responsibility of Subcommittee F01.18 on Printed 5.1 Machine capable of providing cyclic abrasion to a test
Electronics.
specimen under controlled loading conditions.
Current edition approved July 1, 2015. Published September 2015. DOI:
10.1520/F3152-15. 5.2 Suggested sources:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F3152 − 15
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5.2.1 Norman Tool Abrader Model WA-1010. 8.3 Gently lower the abradant onto the specimen.
5.3 Specimen Mounting Fixture or Holder, a suitable device 8.4 Fill chemical reservoir with specified chemical and
of sufficient strength and rigidity used to secure
...
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