加工抗氧剂对聚乙烯光氧化和敏化光氧化的影响  

Effects of Anti-oxidant and Photo-sensitizer on the Photo-oxidation and Accelerated Photo-oxidation of Polyethylene

作　　者：房海霞[1] 叶永成[1] 白福臣[1] 

机构地区：[1]中科院长春应用化学研究所,吉林长春130022

出　　处：《塑料》2004年第5期63-65,共3页Plastics

摘　　要：研究了抗氧剂残留对线性低密度聚乙烯(LLDPE)的光氧化和添加了光敏剂的敏化光氧化的影响,结果表明,抗氧剂残留明显地降低了LLDPE的光氧化和敏化光氧化反应速率。添加了光敏化剂的不含抗氧剂LLDPE样品在暗处同样会发生氧化反应,而抗氧剂残留可以有效地阻止氧化反应的发生。因此,LLDPE粉料不适于添加光敏化剂加工成可控降解塑料。The effects of anti-oxidant residue on the photo-oxidation and accelerated photo-oxidation of linear low-density polyethylene (LLDPE) were investigated.The results showed that anti-oxidant residue decreased both oxidation rates obviously.The oxidization reaction occurred and the tensile properties decreased even in dark deposition when photo-sensitizer was added into LLDPE containing no anti-oxidant.However,anti-oxidant could prevent the oxidation in the dark deposition effectively.So LLDPE powder material should not be processed to degradable plastics by adding photo-sensitizers.

关 键 词：抗氧剂 LLDPE 敏化 可控降解塑料 氧化反应 聚乙烯 添加 光氧化 残留 加工 

分 类 号：TQ325[化学工程—合成树脂塑料工业] TQ314.249