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.
关键词
聚丙烯(PP)/受阻胺类光稳定剂(HALS)/抗氧剂/辐照致色/高温高湿
Key words
polypropylene(PP)/hindered amine light stabilizers/antioxidants/radiation-induced discoloration/high temperature and humidity
维普
万方数据