Shanghai Daoqin Plastics Co., Ltd.

generally plastics products 变黄都 is material aging or is degradation generate, generally PP is due to aging (degradation) generate, due to polypropylene (PP) upper 侧基 存 in, its stability property good, especially is in light 照 情况 lower. generally add light stabilizer. 至于PE, due to has 侧基, generally processing or is use 初期变黄情况不 is very more. PVC倒 is 会变黄, and product formulation comparison large 说白 就 is oxidation, has material surface easy oxidation, has necessary for material surface treatment. remove system in defect additives, and other, main/primary is aging formed, add combined resistant oxygen system and UV resistant agent can improvement PE, PP yellowing, is very more retardant type resistant oxygen system 本身就会 belt/tape light micro yellowing, also has, has resistant oxygen system and UV resistant agent in resistant 效果, therefore use need very small 心. add polymer/macromolecule lubricant, main/primary let it in machine upper formed types can flow polymer/macromolecule fluorine polymer film, improvement polyolefin resin extrusion processing properties, extrusion pressure and processing temperature degree, improve/increase product quality, production capacity, reduce production cost, decrease/reduce or remove melt 破裂, reduce waste product rate.