What Is Weather Resistance?

Materials such as coatings, construction plastics, rubber products, etc., are used outdoors to withstand the test of the climate, such as comprehensive damage caused by light, cold and heat, wind and rain, bacteria, and so on. English: Weather fastness, weatherability; weathering resistance

Weatherability

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Materials such as coatings, building plastics, rubber products, etc., are used outdoors to withstand the weather test, such as light,

A variety of weather-resistant

Weather resistance refers to a series of aging phenomena such as fading, discoloration, cracking, chalking, and strength reduction caused by external conditions such as sunlight, temperature changes, wind and rain, and plastic products. Among them, ultraviolet radiation is a key factor in promoting plastic aging.

Light, high temperature, and humidity are the main reasons for the loss of gloss, fading, yellowing, and chalking of automotive paint coatings. The weatherability of paint coatings is related to the spectral sensitivity of the coating components.

The main resin of automotive coatings is mainly composed of epoxy resin, amino resin, polyester resin, etc., and contains functional groups such as carbon-oxygen double bonds and carbon-carbon single bonds. Different functional groups have different sensitivities to light because of different bond energies, resulting in differences in weather resistance.

For automotive coatings, UV is the main cause of paint aging. The accelerated ultraviolet aging test can simulate the damage of the ultraviolet part of sunlight on paint coatings, and reproduce the hazards that occur outdoors for months or even years in several days or weeks.

Can help select new materials and evaluate the impact of material formula on durability, to achieve the purpose of verifying coating performance.