聚醚偶联剂改性碳酸钙及CaCO_3/PP复合材料的性能  

Modification of calcium carbonate by polyether coupling and the properties of CaCO_3/PP material

作　　者：曲燕[1] 杨大伟[1] 李乾斌[1] 程如清 魏鑫[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2013年第3期217-219,共3页Journal of Dalian Polytechnic University

摘　　要：自制了偶联剂四氢呋喃均聚醚(PTHF),并用其对轻质碳酸钙表面进行处理,将处理后的碳酸钙填充到聚丙烯塑料中,探讨了新型改性剂对复合材料力学性能的影响。结果表明,四氢呋喃均聚醚能够使碳酸钙的吸油值降低到22%,接触角降低到68.6°。改性后的碳酸钙填充进聚丙烯,能在一定程度上缓解拉伸强度的下降趋势,使复合材料的断裂伸长率达到28.47%、冲击强度达到6.7kJ/m2。SEM观察四氢呋喃均聚醚添加前后复合材料的断面形态,表明碳酸钙在聚丙烯中分散良好。Homemade agent-tetrahydrofuran polyether （PTHF） was used to treat the surface of the precipitated calcium carbonate. The impacts of surface modified CaCOa with coupling agent of PTHF on CaCOa/PP mechanical properties of composite material were studied. The result showed that tetrahydrofuran polyether was able to make the oil absorption of calcium carbonate reduced to 22 and the contact angle decreased to 68.6°. CaCO3 with PTHF filling in the polypropylene can also alleviate the downward trend of the tensile strength to a certain extent, making the elongation at break of composites reached 28.47 and the impact strength of the composites reached 6.7 kJ/m2. Calcium carbonate with PTHF dispersed better in polypropylene than calcium carbonate by scanning electron microscopy （SEM）.

关 键 词：四氢呋喃均聚醚 碳酸钙 聚丙烯 力学性能 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业] TQ314.24