改性针形纳米碳酸钙在PVC中的应用研究

摘要

Needle-shaped nano-calcium carbonate was modified and was introduced into poly（vinyl chloride）（PVC）, and the mechanical properties of the composites were studied. The tensile and impact strength of the composites containing 5 % modified nano-calcium carbonate increased by 5 % and 10 %, respectively, compared with unfilled PVC. Scanning electron micrograph showed that the dispersioa of the modified nano-calcium carbonate was uniform, and fracture surface showed a ductile mode.%用市售改性剂对自制的针形纳米碳酸钙进行表面改性，然后将改性针形纳米碳酸钙填充到聚氯乙烯（PVC）材料中，研究了PVC复合材料的力学性能。与未填充改性针形纳米碳酸钙的PVC相比，添加5份改性针形碳酸钙的PVC复合材料拉伸强度提高了10％、冲击强度提高了7％；扫描电子显微镜分析显示，改性针形纳米碳酸钙在PVC体系中分散均匀，冲击试样断面和拉伸试样断面均呈现明显的韧性断裂特征。