纳米CaCO_3增韧聚氯乙烯复合材料的界面作用和拉伸性能  

Interfacial adhesion and tensile yield stress of CaCO_3 nano particle reinforced PVC composites

作　　者：牛建华[1] 张玲[2] 孙水升[2] 

机构地区：[1]浙江华之杰塑料建材有限公司,浙江德清313200 [2]超细材料制备与应用教育部重点实验室,华东理工大学材料科学与工程学院,上海200237

出　　处：《新型建筑材料》2008年第8期81-85,共5页New Building Materials

基　　金：国家高科技研究发展计划项目(2006AA03Z358);国家自然科学基金项目(20706015;50703009);上海市科技启明星计划项目(06QA14013;07QA14014);上海市基础研究重大项目(07DJ14001);教育部博士点基金项目(20070251022);上海市重点实验室专项(07DZ22016;06DZ22008);上海市科委纳米专项0752nm010;0652nm034)

摘　　要：用熔融共混方法制备PVC/nano-CaCO3复合材料,研究了纳米CaCO3粒径、表面处理剂及含量对复合材料拉伸性能和界面作用的影响,用界面作用参数B和界面解键角θ表征了CaCO3纳米颗粒和PVC之间的界面作用大小。研究表明,相对于异丙基三(硬酯酰基)钛酸酯以及未改性的纳米CaCO3颗粒,异丙基三(二辛基焦磷酰基)钛酸酯处理使得PVC/nano-CaCO3复合材料有更高的拉伸强度和界面作用。PVC/nano-CaCO3复合材料的拉伸强度和界面作用随着表面处理剂含量的增加以及纳米碳酸钙粒径的减小而增大。PVC/nano-CaCO3 composites were prepared via a melt mixing, and the effect of CaCO3 nano particle sizes,coupling agents and their concentration on the tensile yield stress of PVC/nano-CaCO3 were studied. The interracial interaction parameter B and interracial debonding angle θ that calculated from tensile yield stress were employed to characterize the interracial interaction between PVC matrix and nano-CaCO3 particles. It was found that PVC composites filled with nano-CaCO3 particles treated with isopropyl tri-（dioctylpyrophosphato） titanate （JNA）had a higher tensile yield stress and interfacial interaction than those filled with isopropyl tri-stearyl titanate （JNB） treated or untreated nano-CaCO3 particles. Furthermore the tensile yield stress and interracial interaction increased with the increasing concentration of titanate coupling agents and the decrease size of nano-CaCO3 particles.

关 键 词：聚氯乙烯 纳米CACO3 拉伸性能 界面作用 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]