Improving the aging resistance of polycarbonate three-layer hollow boards can be achieved by selecting raw materials, optimizing production processes, surface treatment, and maintenance. The specific methods are as follows:
raw material selection
Selecting high-quality resin: High quality polycarbonate resin is the foundation, with uniform molecular weight distribution, less impurities, and better stability and aging resistance. Resin raw materials from well-known brands that have been validated in the market over a long period of time are more guaranteed in terms of performance.
Adding anti-aging additives: add appropriate anti-aging additives, such as ultraviolet absorber, antioxidant, etc. to the raw materials. UV absorbers can effectively absorb ultraviolet rays and reduce the damage of ultraviolet rays to polycarbonate molecular chains; Antioxidants can inhibit oxidation reactions and delay material aging.
Production process optimization
Optimize extrusion process: Accurately control extrusion temperature, speed and other parameters to ensure uniform and dense internal structure of the board, reduce internal defects caused by unstable process, such as bubbles and stress concentration, thereby improving the overall performance and aging resistance of the board.
Adopting advanced molding technology, such as multi-layer co extrusion technology, a protective layer with special properties can be formed on the surface of the board to improve its weather resistance and aging resistance. At the same time, advanced molding technology can improve the dimensional accuracy and surface flatness of the board, which is beneficial for enhancing its aging resistance.
Surface Treatment
Coating with protective coating: Apply a weather resistant protective coating, such as fluorocarbon coating, silicone coating, etc., on the surface of the polycarbonate three-layer hollow board. These coatings can effectively isolate the erosion of ultraviolet rays, water vapor, and oxygen on the board, improve the aging resistance of the board, and also increase the surface hardness and wear resistance of the board.
Surface hardening treatment: harden the surface of the plate by chemical or physical methods, such as plasma treatment, UV curing and other technologies, to form a layer of modified layer with high hardness on the surface of the plate, and improve the scratch resistance and anti-aging ability of the surface.
Usage and maintenance
Reasonable design and installation: During the installation process, avoid contact between the board and sharp objects to prevent surface scratches. At the same time, sufficient expansion and contraction space should be reserved to adapt to the expansion and contraction of the board caused by temperature changes, and to avoid accelerating the aging of the board due to stress concentration.
cloth to remove dust, dirt, and corrosive substances. Avoid using corrosive cleaning agents such as strong acids and alkalis to prevent damage to the surface of the board.
Avoid long-term exposure to sunlight: Although polycarbonate three-layer hollow boards have certain UV resistance, long-term exposure will still accelerate their aging. In practical use, the time that the board is directly exposed to sunlight can be reduced by building sunshades, planting green plants, and other methods.
