The VW PV 3987 standard, developed by the Volkswagen automobile company, describes a method for testing micro-scratch resistance and scrubbing resistance on high-gloss surfaces. If the test gloss level measurement at an angle of 60 degrees is greater than 70 GU, this surface is called high glossy. Further gloss level measurements are performed with a measuring angle of 20 degrees.
.jpg "VW PV 3987 Scrub Resistance of High Gloss Surfaces in Vehicle Interior (Micro-Scratch Resistance)")
This test method is suitable for determining the properties of uncoated (e.g. polyamide or polymethyl methacrylate) and coated high-gloss surfaces (e.g. paint, in-mold decoration, in-mold labeling) when subjected to low-force friction loads. The test is done on flat surfaces. The test result determines the relative change in gloss produced by rubbing with wax paper on a high-gloss surface.
A minimum sample size of 150x100 mm is required to perform the test. There must be a conditioning period of at least 7 days between sample preparation and testing. For conditioning, the sample should be kept in a standard atmosphere for 50554 hours according to the VW 48 standard. It is necessary to condition hydrophilic materials (eg polyamides) in a standard atmosphere for 7 days.
In the paint industry, the property of scrub resistance is measured as the ability of a dried paint film to resist abrasion or degradation. Wear or deterioration is assessed either visually or by weight loss when using a brushability tool or an abrasion tester.
According to the test methods governing abrasion resistance testing, the paint must be formulated to withstand abrasion for a specified number of washing/cleaning cycles when using a non-abrasive or abrasive cleaning medium as specified in these methods. The thickness of the paint applied in these tests may be specified by the coating manufacturer or the end-user requesting the test. Hardness is defined as a material's resistance to permanent deformation. In the coatings industry, hardness measurement is performed to determine the coating's resistance to scratching from general wear and tear.
Among the numerous tests, measurements, analyses, and evaluations our organization provides for businesses in various sectors, we also offer abrasion resistance (micro-scratch resistance) testing services for highly polished surfaces in vehicle interiors , in accordance with the VW PV 3987 standard, thanks to our trained and expert staff and advanced technological equipment.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
