聚乙烯熔融挤出接枝α-甲基丙烯酸  

Study on Methyl Acrylic Acid Grafted onto LDPE by Melt Extrusion

作　　者：郁锋[1] 李树材[1] 崔永岩[1] 郭伟凯 

机构地区：[1]天津轻工业学院90信箱,天津300222

出　　处：《中国塑料》2001年第11期27-29,共3页China Plastics

基　　金：天津市自然科学基金资助项目 ( 0 0 360 2 911)

摘　　要：通过聚乙烯熔融挤出接枝甲基丙烯酸 (MAA) ,研究了各种因素对LDPE接枝率及熔体流动速率的影响。研究表明 ,MAA用量对接枝率影响较大 ,而引发剂用量对接枝率影响不大 ;丙烯酸 (AA)的加入提高了接枝率和熔体流动速率 ,而加入马来酸酐 (MAH)接枝率则反而下降 ;DCP BPO为 4 1时接枝率最高 ;阻交联剂的加入提高了熔体流动速率 ,但降低了接枝率。Factors influencing the graft ratio and melt flow rate of LDPE were studied based on the melt extrusion of methyl acrylic acid (MAA)grated onto LDPE.The results showed that amount of MAA influenced the graft ratio strongly,but contents of initiator had little effect on it.The incorporation of acrylic acid increased the graft ratio and melt flow rate,but the incorporation of malei hydride decreased the graft ratio.The graft ratio reached its limit while the ratio of dicumyl peroxide to benzoyl peroxide was 4/1.The introduction of crosslinking inhibitor increased the melt flow rate while lowering the graft ratio.

关 键 词：聚乙烯 Α-甲基丙烯酸 熔融挤出 接枝改性 

分 类 号：TQ316[化学工程—高聚物工业]