DAP存在下GMA熔融接枝聚丙烯的研究  

Melt Grafting of GMA onto Polypropylene in the Presence of DAP

作　　者：董银春 郭秋月[1] 林永男 沈帆[1] 徐建平[1] 

机构地区：[1]常州大学材料科学与工程学院,江苏常州213164

出　　处：《现代塑料加工应用》2017年第3期25-28,共4页Modern Plastics Processing and Applications

摘　　要：在熔融状态下,将甲基丙烯酸缩水甘油酯(GMA)接枝到聚丙烯(PP)上,考察了共单体邻苯二甲酸二烯丙酯(DAP)、过氧化二异丙苯(DCP)用量、DAP/GMA物质的量比、混合单体用量、反应温度、密炼机转速对接枝反应的影响。结果表明:加入适量的DAP,有利于提高GMA相对接枝率,同时能有效抑制接枝过程中PP的降解;当DAP/GMA物质的量比大于0.4时,GMA相对接枝率提高不明显;最佳接枝条件为PP 100g,DCP 0.2g,混合单体(DAP/GMA物质的量比为0.4)10g,温度180℃,转速120r/min,混炼时间8 min。Glycidyl methacrylate （GMA） was grafted onto polypropylene by melt grafting. The effects of comonomer diallyl phthalate dicumyl peroxide（DCP） dosage,DAP/GMA molar ra- tio, mixed monomer dosage,temperature and rotor speed on the grafting reaction were examined respectively. The results reveal that adding appropriate amount of DAP is in favour of increasing relative grafting degree of GMA and preventing degradation of PP during melt grafting. When DAP/GMA molar ratio is greater than 0.4, relative grafting degree of GMA is not increased obviously. The optimum grafting-condition is at the dosage of 100 g PP, 0.2 g DCP and 10 g mixed monomer（DAP/GMA molar ratio is 0.4） under the temperature of 180℃, the rotor speed of 120 r/min and mixing time of 8 min.

关 键 词：聚丙烯 邻苯二甲酸二烯丙酯 甲基丙烯酸缩水甘油酯 接枝 

分 类 号：TQ316.343[化学工程—高聚物工业]