元明粉表面接枝甲基丙烯酸甲酯/聚甲基乙撑碳酸酯复合材料的制备与性能研究  

Study on preparation and property of MMA/PPC composite grafted with sodium sulfate

作　　者：赵平源[1] 秦吉涛 Zhao Pingyuan;Qin Jitao(School of Materials and Metallurgy,Guizhou University,Guiyang 550025)

机构地区：[1]贵州大学材料与冶金学院,贵阳550025

出　　处：《化工新型材料》2020年第8期149-151,155,共4页New Chemical Materials

基　　金：国家自然科学基金(51764006和51864012);贵州省科学合作计划项目([2019]1411、[2017]5788、[2018]5781、[2016]5302和[2019]2841)。

摘　　要：以元明粉(Na2SO4,简称S)作为改性剂,甲基丙烯酸甲酯(MMA)、聚甲基乙撑碳酸酯(PPC)为基体,通过密炼机进行熔融共混制得元明粉-MMA/PPC复合材料。采用拉伸、热失重及扫描电镜对S-MMA/PPC复合材料进行拉伸性能、热力学性能以及微观形貌的分析。结果表明:随着S-MMA接枝聚合物含量的增加,S-MMA/PPC复合材料的拉伸强度逐渐增加,断裂伸长率逐渐下降;S-MMA提高了PPC的结晶性和热稳定性,同时S-MMA/PPC复合材料的相容性较好。Sodium sulfate(S)was used as a modifier,methyl methacrylate(MMA)and polymethylethylene carbonate(PPC)were used as the matrix,and melted and blended by an internal mixer to obtain S-MMA/PPC composite.The tensile properties,thermodynamic properties and microstructure of S-MMA/PPC were analyzed by tensile,thermogravimetric and scanning electron microscopy.The results shown that with the increase of S-MMA graft polymer content,the tensile strength of S-MMA/PPC composite increased gradually,and the elongation at break decreased gradually.S-MMA improved the crystallinity and thermal stability of PPC.At the same time,the compatibility of S-MMA/PPC was better.

关 键 词：元明粉 聚甲基乙撑碳酸酯 强度 热稳定性 

分 类 号：TB332[一般工业技术—材料科学与工程]