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.
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