Polycarbonate Sheet is abbreviated as PC board, which is made of polycarbonate polymer.It is manufactured with advanced formula and the latest extrusion technology.PC board is a new type of high-strength, light-transmitting building material, which replaces glass,The best building material for plexiglass. PC board is better than laminated glass, tempered glass,Insulating glass, etc. has more excellent properties such as light weight, weather resistance, super strength, flame retardant, and sound insulation.Become a popular building decoration material.

Anti-ultraviolet additives
Generally speaking, there are two kinds of resins purchased by the board production plant, one is ordinary PC resin,
The other is PC resin containing anti-ultraviolet additives. Therefore, the selected anti-ultraviolet additives are as large as the following categories:
(1) Salicylic acid esters, such as p-tert-butylphenyl salicylate (TBS).
(2) Benzophenones, such as 2-hydroxy-4-methoxybenzophenone (UV-9);
2-hydroxy-4-methoxy-2′-carboxybenzophenone (UV-207);
2-Hydroxy-4-n-octyloxybenzophenone (UV-531).

(3) Benzotriazoles such as 2-(2′-hydroxy)-3,7,5′-di-tert-butylphenylbenzotriazole (UV-320);
2-(2′-hydroxy-5′-tert-octylphenyl)benzotriazole (uV-5411) and the like.
PC board is very easy to produce internal stress,
Whether the board has internal stress can be tested by carbon tetrachloride soaking and polarized light.
The internal stress of the sheet can be eliminated by annealing.