钛酸酯偶联剂在碳酸钙填充PVC中的应用研究

用红外光谱分析（FTIR）研究了钛酸酯偶联剂对碳酸填料的活化作用，探讨活化碳酸钙对填充PVC复合材料的力学性能和流变性能的影响。结果表明：碳酸钙经钛酸酯偶联剂处理，改善了其在复合材料中的分散性、流变性能，冲击强度比未处理碳酸钙的冲击强度提高了56%，并用扫描电子显微镜（SEM）观察了复合材料断面形貌，揭示形态结构与性能间的关系。

Study on Application of Titanate Coupling Agents in CaCO3-filled PVC Composites

This paper studied the surface modification of light calcium carbonate (L-CaCO3) with titanate coupling agents by FTIR. The effects of activated L-CaCO3 on rhelogical behavior and mechanical properties of PVC composites were discussed. The results showed that the dispersion of L-CaCO3 in PVC and the rhelogical behavior of composites were improved by adding the coupling agent of titanate. The charpy impact strength of the L-CaCO3-filled PVC composite treated with NDZ 101 was increased by 56%, which Was demonstrated by examining the broken surface of specimen with SEM. The relationship between the morphology and properties established was useful for industrial producting.