ASTM-D2197 Standard Test Method for Adhesion of Organic Coatings by Scrape Adhesion

ASTM-D2197 - 2016 EDITION - CURRENT
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Standard Test Method for Adhesion of Organic Coatings by Scrape Adhesion
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Scope

1.1 This test method covers the determination of the adhesion of organic coatings such as paint, varnish, and lacquer when applied to smooth, flat (planar) panel surfaces.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

Significance and Use

4.1 Coatings to perform satisfactorily must adhere to the substrates on which they are applied. This test method has been found useful in differentiating the degree of adhesion of coatings to substrates. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion.

4.2 Studies performed in a laboratory using the loop stylus specified in the previous edition showed meaningful adhesion data were impossible when loads of 10 to 20 kg were required to break the surface of a solvent based coating. The chrome plated loop stylus chattered and skipped across the coating surface when loads of this magnitude were required. Similar meaningless data were obtained when powder coatings were tested that required more than 10 kg to break the surface. Therefore, testing under these conditions is not applicable.

Keywords

adhesion; balanced-beam scrape adhesion tester; scrape;; ICS Number Code 25.220.60 (Organic coatings)

To find similar documents by ASTM Volume:

06.01 (Paint -- Tests for Chemical, Physical, and Optical Properties; Appearance)

To find similar documents by classification:

25.220.60 (Organic coatings)

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Document Number

ASTM-D2197-16

Revision Level

2016 EDITION

Status

Current

Modification Type

Revision

Publication Date

Feb. 1, 2017

Document Type

Test Method

Page Count

4 pages

Committee Number

D01.23