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Significance and Use
4.1 Interior paint films often become soiled, especially near doorways, windows, and play areas, and frequently need to be cleaned by scrubbing. This test method covers the determination of the relative resistance of paints to erosion when scrubbed.
4.2 The precision of scrub resistance measurements in absolute physical values, such as Test Methods D2486 cycles-to-failure or this test method, microlitres per 100 cycles, is poor due to the relatively large effect of subtle and difficult-to-control variables in test conditions. The test method described herein minimizes this problem by using a standard calibration panel as an integral part of each scrubbing operation and relating its weight loss to that of the paint film under test to establish the latter's scrub resistance.
4.3 Results obtained by this test method do not necessarily represent the scrub resistance that might be determined if the test film is allowed to dry before testing appreciably longer than the seven-day period specified herein.
4.4 Results obtained by this test method do not necessarily relate to ease of soil or stain removal (also referred to as “cleanability” or “cleansability”). To test for those characteristics use Test Methods D3450 and D4828.
1.1 This test method covers an accelerated procedure for determining the resistance of paints to erosion caused by scrubbing. (Note: The term wet abrasion is sometimes used for scrubbing, and wet abrasion resistance or scrubbability for scrub resistance.) Although scrub resistance tests are intended primarily for interior coatings, they are sometimes used with exterior coatings as an additional measure of film performance.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer
D1193 Specification for Reagent Water
D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products
D2486 Test Methods for Scrub Resistance of Wall Paints
D3450 Test Method for Washability Properties of Interior Architectural Coatings
D3980 Practice for Interlaboratory Testing of Paint and Related Materials
D4828 Test Methods for Practical Washability of Organic Coatings
E70 Test Method for pH of Aqueous Solutions With the Glass Electrode
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 87.040 (Paints and varnishes)
UNSPSC Code 31211500(Paints and primers)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D4213-08(2012), Standard Test Method for Scrub Resistance of Paints by Abrasion Weight Loss, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top