摘要
选择不同的方法对纳米CaCO3进行表面改性,研究了表面处理剂对CaCO3/PVC纳米复合材料界面结合强度、力学性能及加工性能的影响。通过正交实验设计得到了力学性能最佳时的制备条件:表面处理剂选用钛酸酯偶联剂,其用量4%(质量分数),纳米CaCO3用量15%(质量分数)。极差分析结果表明,对冲击强度而言,主要影响因素为表面处理剂用量;扫描电镜显示,钛酸酯偶联剂处理可使纳米CaCO3颗粒在PVC基体中达到良好分散,并提高其界面结合强度;流变性能研究表明,经钛酸酯处理的纳米CaCO3填充PVC具有更低的平衡转矩。
Various methods were adopted to modify the surface of nano- CaCO3, and the effccts of surface treating agents on the interfacial cohesion tensity, mechanical properties and processing properties of CaCO3/PVC nano-composite materials wcre studicd. Through thc orthogonal design experiments,the optimum preparing conditions for obtaining the best mcchanical properties were obtained., titanate coupling agent was adopted as the surface treating agent with 4 wt% dosage,and thc dosage of nano- CaCO3 was 15 wt%. The results of variancc analysis showed that thc using a- mounts of surfacc treating agent was the main factors influencing the impact strength, The scanning electron microscope showed that titanatc coupling agent could make nano - CaCO3 particles well disperse in PVC matrix and increase the intcrfacial cohesion. The research on rheological properties showed that PVC filled with nano- CaCO3 which was treatcd by titanate had much lowcr equilibrium torque.
出处
《聚氯乙烯》
CAS
2007年第9期18-22,共5页
Polyvinyl Chloride
