二硫化四甲基秋兰姆对PP-g-MAH的影响  

The Effect of Tetramethylthiuram Disulfi de on the PP-g-MAH

作　　者：娄金分[1] 罗筑[1] 李扬[1] 夏忠林[1] 曹玉祥 

机构地区：[1]贵州大学材料与冶金学院,国家复合改性聚合物材料工程技术研究中心,贵阳550003 [2]贵州省机电研究设计院,贵阳550014

出　　处：《工程塑料应用》2013年第11期99-102,共4页Engineering Plastics Application

基　　金：贵州省重点科技攻关项目(黔科合GY[2009]3010)

摘　　要：用双螺杆挤出机熔融挤出法制备马来酸酐接枝聚丙烯(PP-g-MAH)。研究了活性剂二硫化四甲基秋兰姆(TMTD)对PP-g-MAH的影响,通过傅立叶变换红外光谱(FTIR)、差示扫描量热分析、熔体流动速率、酸碱滴定法等表征手段检测接枝物性能。FTIR结果显示,TMTD在接枝反应中起到活性剂的作用,没有接枝到PP分子链上。TMTD的加入提高了MAH的接枝率,在TMTD用量超过引发剂用量时能抑制PP分子链的β断裂。Maleic anhydride graft polypropylene（PP-g-MAH） was prepared by melt-extrusion method in twin-screw extruder. The effect of Tetramethylthiuram Disulfide（TMTD） on PP-g-MAH was studied. The performances of the graft products were tested by FIIR, DSC, MFR and acid-base titration. The FTIR spectra test results show that TMTD play a role as the active agents in the grafting reaction, no grafted onto the molecular chain of polypropylene. TMTD improves the grafting ratio of MAH and can inhibit the β-scission of PP when the content of TMTD is more than that of the initiator.

关 键 词：马来酸酐 熔融接枝 聚丙烯 活性剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]