The effects of different types of hindered amine light stabilizers and antioxidants on the γ-ray radiation-induced discoloration of polypropylene(PP)and the color stability at high temperature and humidity after PP irradiation were studied.The results showed that the hindered amine light stabilizers LA-52SC and 994 were more effective than 770 in preventing the radiation-induced discoloration of PP and improving the high temperature and humidity resistance of PP after irradiation.The addition of main antioxidant FS-042 and auxiliary antioxidant 608 in PP can effectively improve theγ-ray radiation resistance and high temperature and humidity resistance of PP material than the addition of main antioxidant 1010 and auxiliary antioxidant 168.
polypropylene(PP)hindered amine light stabilizersantioxidantsradiation-induced discolorationhigh temperature and humidity
万方数据
维普
