Test Background
The paint film impact test can use a fixed-mass weight to fall on the punch. The maximum height (cm) of the weight falling when the punch hits the test panel without causing damage to the paint film indicates the impact resistance of the paint film.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various paint films and provides professional impact testing 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
1. Apply the test sample on a suitable metal substrate. After curing, drop a fixed-mass weight from a certain height and impact the punch to deform the paint film and substrate. It can be forward flushing (paint film facing up) or reverse flushing (paint film facing down).
2. By gradually increasing the height of the weight drop, the numerical point at which the paint film is often damaged is measured.
Test standard:
GB/T 1732-2020 Paint film impact resistance determination method
GB/T 308.1-2013 Rolling bearing balls Part 1: Steel balls
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
GB/T 37356 Paints and varnishes - Lighting conditions and methods for visual evaluation of coatings
