CaCO_3/PP复合材料的制备及力学性能研究

Study on the preparation and mechanical properties of CaCO_3/PP composite materials

采用钛酸酯偶联剂对CaCO3粒子进行表面处理,通过双辊熔融共混和硫化压机压片技术制备了CaCO3/PP复合材料;测试了其拉伸强度、冲击强度和硬度,探讨了偶联剂用量和CaCO3添加量对复合材料力学性能的影响。研究表明,添加CaCO3粒子能有效提高PP材料的力学性能,且经偶联剂表面处理后的CaCO3粒子对改善PP的力学性能效果更佳,当采用2%钛酸酯偶联剂表面处理后的CaCO3粒子添加量为4%时,CaCO3/PP复合材料综合力学性能最好。

The surface of CaCO3 were modified by titanate coupling agent. CaCO3/PP composites were prepared by melt--blending process. While the properties of such PP materials were studied by tensile strength, notched impact strength, hardness mechanical property tests. The results indicated that CaCO3 can improved mechanical properties of PP, and CaCO3 modified by coupling agent had better effect on mechanical properties than that unmodified. When titanate coupling agent was 2% and CaCO3 content was 4%, the mechanical properties of composites had good performance.