ABS接枝物的制备及其对r-PET/ABS的增容作用  

Preparation of grafted ABS and compatibilization of r-PET/ABS blends by the grafted ABS

作　　者：陈智军[1] 王益龙[1] 郑辰[1] 

机构地区：[1]大连理工大学化工学院高分子材料系,辽宁省大连市116024

出　　处：《合成树脂及塑料》2012年第5期30-33,共4页China Synthetic Resin and Plastics

摘　　要：通过反应挤出法制备马来酸酐(MAH)接枝丙烯腈-丁二烯-苯乙烯三元共聚物(ABS)(ABS-g-MAH)和甲基丙烯酸缩水甘油酯(GMA)接枝ABS(ABS-g-GMA),将其用于增容回收聚对苯二甲酸乙二酯(PET)瓶片(r-PET)/ABS共混物,发现能显著提高共混物的冲击强度。ABS-g-MAH的增容效果优于ABS-g-GMA;ABS-g-MAH的接枝率为1.35%,w(ABS-g-MAH)为5%时对r-PET/ABS的增容作用最佳,此时r-PET/ABS/ABS-g-MAH的简支梁缺口冲击强度和无缺口冲击强度比r-PET/ABS分别提高了42%和23%。扫描电子显微镜观察表明,加入ABS接枝物能使ABS在r-PET连续相中的分散更均匀,粒径尺寸更均一。Two kinds of grafted aerylonitrile-butadiene-slyrene eopolymer（ABS）, i.e. maleic anhydride （MAH） grafted ABS（ABS-g-MAH） and glycidyl metlmerylate（GMA） grafted ABS （ABS-g-GMA）. were prepared via reactive extrusion and were used as eompatibilizer for recycled polyethylene glycol terephthalate （r-PET）/ABS blends. The results show that ABS-g-MAH and ABS-g-GMA can greatly improve the impact strength of the blends. ABS-g-MAH is superior to ABS-g-GMA in compatibilization eftect. The oplimal compatibilization effect is acquired when the grafting ratio of ABS-g-MAH is 1.35% and the mass content the eopoiymer is 5%. Under such conditions, the notched and unnotehed Charpy impact strength of the r-PET/ABS/ABS-g-MAH blends rise by 42% and 23%. respectively, in comparison with those of r-PET/ ABS. The observation by scanning electron microscope（SEM） shows that adding grafted ABS can make ABS be dispersed more homogeneously in the r-PET continuous phase and make particle size more even.

关 键 词：聚对苯二甲酸乙二酯丙烯腈-丁二烯-苯乙烯三元共聚物 废饮料瓶片 反应挤出机 接枝 增容 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]