Test Background
paint film polishing test can measure the polishing resistance of coatings and putty films under a specified load and after polishing a specified number of times, based on the changes in the surface of the coating film and the ease of polishing to evaluate its polishing resistance.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various paint films and provides professional polishing test services for paint films.
Scope of tests
1) According to use: there are wood paint, iron paint, glass paint, aluminum paint;
2) Divided by state: water-based paint and oil-based paint. Water-based paint is mainly latex paint, while lacquer paint, polyurethane paint, etc.;
3) According to the form of action: volatile paint and non-volatile paint;
4) According to the surface effect: transparent paint, translucent paint and opaque paint.
Test method
Observe visually under scattered sunlight, and evaluate the results using two samples with similar phenomena among the three samples.
According to needs, the phenomena that appear on the surface of the sample coating after polishing can be evaluated, such as whether the surface is smooth and whether there are unground pigment particles or other impurities. The difficulty of polishing can also be evaluated based on the weight loss of the coating before and after polishing or the degree of grinding matter adhering to the sandpaper.
Test standard:
GB/T 1770-2008 Determination of Polishability of Paint and Putty Films
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes Sampling
GB/T 9271 Paints and varnishes Standard test plate
GB/T 9278 Temperature and humidity for condition conditioning and testing of paint samples
GB/T 13452.2 Paints and varnishes - Determination of paint film thickness
GB/T 20777 Paints and varnishes - Inspection and preparation of specimens
