【摘要】 研究了含超细碳酸钙 (CaCO3 )、硬脂酸铁 (FeSt3 ) [或二正丁基二硫代氨基甲酸铁 (FeDBC) /二正丁基二硫代氨基甲酸镍(NiDBC)光敏剂 ]的低密度聚乙烯 (LDPE)膜的光氧降解羰基指数 (CI)和粘均相对分子质量 ( Mη)的变化。结果表明 ,在LDPE膜中加入 10 %～ 2 0 %CaCO3 和 0 1%～ 0 3%FeSt3 或 0 0 5%～ 0 .2 0 %FeDBC/NiDBC ,在自然曝露条件下可控制LDPE膜的寿命更多还原

【Abstract】 The changes of carbonyl index( CI ) and viscosity average molecular weight ( η)of low density polyethylene (LDPE) film containing superfine CaCO\-3 and ferric stearate (FsSt\-3),or ferric N,N-dibuty dithiocarbamate (FeDBC)/nickel N,N-dibuty dithiocarbamate (NiDBC) photosensitizer during photooxidation degradation have been studied. The results have shown that the lifetime of LDPE film under natural exposure conditions could be controlled by adding 10%～20% CaCO\-3 and 0.1%～0.3% FeSt\-3 or 0.05%～0.20% FeDBC/NiDBC to the LDPE film.更多还原