通过反应性挤出对废旧PC/ABS合金的改性  

Modification of Waste PC/ABS Alloys by Reactive Extrusion

作　　者：王亚菲 李迎春[1] 王文生[1] 吕利达 田赪 李陈洪 Wang Yafei;Li Yingchun;Wang Wensheng;Lyu Lida;Tian Cheng;Li Chenhong(School of Materials Science and Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学材料科学与工程学院,太原030051

出　　处：《工程塑料应用》2018年第11期35-38,共4页Engineering Plastics Application

摘　　要：采用熔融挤出法,利用苯乙烯–丙烯腈–甲基丙烯酸缩水甘油酯共聚物(SAG)中的环氧基团和废旧聚碳酸酯/苯乙烯–丁二烯–丙烯腈塑料(W–PC/ABS)合金中的羧基/羟基发生的化学反应,实现了对降解了的PC/ABS合金的分子链修复,从而达到性能恢复的目的。通过傅立叶变换红外光谱(FTIR)证明了SAG中的环氧基团与W–PC/ABS合金中的羧基/羟基的反应,并研究了SAG对W–PC/ABS合金力学性能和相容性的影响。结果表明,质量分数6%的SAG的加入使得W–PC/ABS合金拉伸强度、弯曲强度和缺口冲击强度分别提高了21.3%,60.7%和75.6%,同时实现了对W–PC/ABS合金的增韧与增强。扫描电子显微镜和动态力学性能测试结果表明,SAG的加入,改善了W–PC/ABS合金中PC相与ABS相的相容性,提高了其界面粘结力。The chemical reactions of epoxy groups in styrene-acrylonitrile-glycidyl methacrylate(SAG)and carboxyl/hydroxy groups in waste polycarbonate/styrene-butadiene-acrylonitrile(W–PC/ABS)alloys were used to repair molecular chains of degraded PC/ABS alloys melt method,which could regain the properties of W–PC/ABS alloys.The reactions were demonstrated by Fourier transformed infrared spectroscopy(FTIR),and mechanical properties and compatibility of the samples were also studied.The results show that,compare with unmodified samples,the tensile strength,flexural strength and impact strength of modified W–PC/ABS alloys with 6%SAG are improved by 21.3%,60.7%and 75.6%,respectively,which is reinforced and toughened for W–PC/ABS alloys at the same time.Scanning electron microscopy(SEM)and dynamic mechanical analysis(DMA)show that the compatibility and the interfacial adhesion of PC phase and ABS phase in W–PC/ABS alloys are improved after adding SAG.

关 键 词：聚碳酸酯/苯乙烯–丁二烯–丙烯腈塑料合金 苯乙烯–丙烯腈–甲基丙烯酸缩水甘油酯 相容性 

分 类 号：TQ322.2[化学工程—合成树脂塑料工业]