PE-MAH的合成及其对PE/NBR的增容作用  

THE SYNTHESIS OF PE-MAH AND ITS COMPATIBILIZATION FOR PE/NBR

作　　者：王益龙[1] 黄葆同[2] 

机构地区：[1]大连理工大学化工学院高分子材料系,116012 [2]中国科学院长春应用化学研究所

出　　处：《现代塑料加工应用》1995年第3期33-36,共4页Modern Plastics Processing and Applications

摘　　要：聚乙烯(PE)、马来酸酐(MAH)和过氧化二异丙苯(DCP)在溶液中反应,其产物经多次纯化和红外光谱分析证明,MAH以化学键连接到PE分子链上,接枝率达0.5MAH/100E,即相当于平均每个PE上接枝有10个MAH。用不同接枝率的聚乙烯接枝马来酸酐共聚物(PE-MAH)作为极性差别较大的PE和丁腈橡胶(NBR)的相容剂,分别研究其接枝率和用量对共混物的拉伸强度和低温冲击强度的影响,结果发现:PE-MAH增加了PE/NBR的相容性。低温脆断面的扫描电子显微镜观察清楚地反映出PE-MAH的增容作用。本文还提出了增容模型。Polyethylene (PE), maleic anhydride (MAH) and dicumyl peroxide (DCP) reacted in solution, and the product was analysed by infrared spectrum after refining many times, it was proved that PE molecular backbone grafted MAH by chemical bond, the graft ratio was 0.5 MAH/100E or average 10 MAH per PE. PE-MAH with different graft ratio was used as compatibilizer of PE and NBR, and the influence of graft ratio and usage of the compatibilizer on tensile strenth and low-temperature impact strength of the blend was studied. It was found that PE-MAH increased the compatibility of PE/NBR. Observing the low temperature brittle fracture face of PE/NBR by electron scanning microscope, the compatibilization of PE-MAH was reflected clearly. A compatibilizing model also was introduced.

关 键 词：聚乙烯 马来酸酐 增容作用 接枝共聚 改性 

分 类 号：TQ323.12[化学工程—合成树脂塑料工业]