Discussion on the causes of yellowing of plastic products
Generally speaking, the yellowing of plastic products is caused by the aging or degradation of materials. Generally, PP is caused by aging (degradation). Due to the existence of the upper side group of polypropylene, its stability is not good, especially in the case of light. Generally, light stabilizers are added. As for PE, because there is no side base, there is not a lot of yellowing at the initial stage of processing or use. PVC will turn yellow, which […]