相容剂对聚丙烯/纳米黏土复合材料抗熔垂性能影响的研究  

Study on the Sag Resistance of PP-g-MAH Modified PP/Nano-clay Composites

作　　者：陈斌艺[1] 刘本刚[1] 陈士宏[1] 王向东[1] 张玉霞[1] 

机构地区：[1]北京工商大学材料科学与工程系,北京100048

出　　处：《中国塑料》2009年第1期55-58,共4页China Plastics

基　　金：北京市教育委员会科技发展计划面上项目资助(KM200810011009)

摘　　要：在双螺杆挤出机上制备了相容剂马来酸酐接枝聚丙烯（PP-g-MAH）改性的聚丙烯（PP）／纳米黏土复合材料。通过XRD测试和抗熔垂性能测试研究了PP-g-MAH对复合材料抗熔垂性能的影响。研究表明：PP-g-MAH的性能和用量对复合材料的插层结构有一定影响，进而影响到复合材料的抗熔垂性能。其中，采用熔体流动速率小、接枝率低的PP-g-MAH所得到的纳米黏土复合材料的抗熔垂性能相对较好，但PP-g-MAH的含量不宜过高。插层结构的黏土片层的层间距与复合材料抗熔垂性能存在一定关联，PP／纳米黏土复合材料中存在最利于材料抗熔垂性能提高的插层结构，层间距为2．90～3．10nm的插层结构对应的复合材料的抗熔垂能力较好。PP-g-MAH modified PP/nano-clay composite was prepared on a twin-screw extruder. Effect of the compatibilizer, PP-g-MAH, on the sag resistance of the composite was studied by XRD analysis and sag resistance testing. Experimental results show that the compatilizer properties and dosages have certain influences on the intercalation structure and the sag resistance of the composite. When the compatilizer with lower melt flow rate and lower grafting rate was used, the composite exhibited excellent sag resistance. structure of the composite was related to the sag the layer space of the clay is 2. 90-3. 00 nm, reached its highest value. The layer spacing of the different intercalated resistance, there was optimal layer spacing. While the sag resistance of the PP/nano-clay composite.

关 键 词：聚丙烯 纳米黏土 相容剂 马来酸酐接枝聚丙烯 插层结构 抗熔垂性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]