1. Good decoration: Requires exterior wall paint with rich color and excellent color retention, which can maintain the original decorative performance for a long time.
2, good weather resistance: exterior wall coating, because the coating is exposed to the atmosphere, to withstand the effects of wind, sun, salt spray corrosion, rain, cold and heat, in the long-term repeated action of these external natural environment, The coating is prone to cracking, chalking, flaking, discoloration, etc., causing the coating to lose its original decorative protection function. Therefore, the outer wall shall be required to have the above-mentioned damage during the specified service life.
3. Good stain resistance: Due to the large difference in environmental conditions in different regions of China, for some cities with heavy industry and mining industry, due to the dust and other suspended substances in the atmosphere, the easy-to-contamination coating will lose its original decoration. The effect, which affects the appearance of the building. Therefore, the exterior wall coating should have good stain resistance, so that the coating is not easily contaminated or contaminated and easily washed away.
4, good water resistance: exterior wall paint finish exposed to the atmosphere, will often be washed by rain. Therefore, the exterior coating should have good water resistance.
5, good mildew resistance: exterior wall coatings are prone to mildew in humid environments. Therefore, the coating film is required to inhibit the growth of mold and algae.
In addition, according to the different functional requirements of the design, the external wall coating also puts forward higher requirements: for example, in various exterior wall insulation system coating applications, the outer wall coating is required to have a good elastic elongation to better adapt to The deformation of the base layer occurs, and the surface layer is cracked, which has a covering effect on the fine cracks of the base layer; the exterior wall paint for the decorative effect of the aluminum-proof composite panel should have a better metal texture and an excessive outdoor durability.
Aluminum Trapezoidal Type Ceiling System
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