摘要
为了解决工业级聚碳酸亚丙酯（PPC）材料存在的力学强度小、加工流动性差和热稳定性能较差的问题，实验以天冠PPC作为基材，有机改性蒙脱土（OMMT）作为无机填料，通过双螺杆挤出机制备了PPC／OMMT复合材料。X射线和TEM测试表明PPC分子链成功地插层进入OMMT—DK2片层中，层间距为3～4nm。力学测试表明，PPC／OMMT复合材料的拉伸强度和弯曲强度均有大幅度提高。流变测试表明，添加OMMT后，PPC的剪切黏度在加工的剪切速率区间大幅度变小，这极有利于提高PPC的流动性，同时也改善了PPC的热稳定性。DSC测试进一步证明了OMMT可以大幅度改善PPC的加工热稳定性。
In order to solve some problems of the industrial grade polypropylene carbonate （PPC）, such as low mechanical strength, poor process flow ability and thermal stability, PPC was chosen as matrix and organic modified montmorillonite （OMMT） as inorganic filler to prepare the PPC/OMMT composites by twin-screw extruder. XRD and TEM testing showed that PPC molecular chain successfully intercalated into the OMMT-DK2 layers and layer spacing was 3 -4 nm. Mechanical testing indicated that the tensile strength and bending strength of PPC/OMMT composites were greatly improved. Rheological testing showed that the shear viscosity of PPC significantly decreases after adding OMMT in shear rate range,which could improve the process flow ability and the thermal stability of PPC. DSC testing further proved the OMMT could dramatically improve the processing thermal stability of PPC.
出处
《塑料》
CAS
CSCD
北大核心
2016年第6期38-41,共4页
Plastics
基金
湖南省高校创新平台开放基金项目(14K032)
关键词
聚碳酸亚丙酯
蒙脱土
机械强度
流变性
热稳定性
polypropyleue carbonate
montmorillonite
mechanical strength
theological property
thermal stability
