硅藻土填充聚丙烯复合材料界面黏结强度的定量表征研究  

Study on Quantitative Characterization for Bond Strength of Diatomite Filled Polypropylene Composite

作　　者：吴成宝[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《塑料科技》2010年第1期46-49,共4页Plastics Science and Technology

摘　　要：运用硅烷偶联剂对3种不同粒径的硅藻土进行表面改性,采用熔融共混法制备了聚丙烯(PP)/硅藻土复合材料,并测试了3种复合材料的拉伸强度。引入了界面相互作用参数B和黏合角θ对复合材料界面黏结状况进行量化表征。结果表明:复合材料的拉伸强度随硅藻土体积分数的提高而降低;3种复合材料的B值在1.12～1.56之间,均小于3,表明在该实验条件下,硅藻土未能增强PP;3种复合材料的θ值在57.91°～73.74°之间,与B值相比可发现,B值较大的复合材料具有相对较小的θ值,说明B值和θ值均能定量表征复合材料界面黏结强度。Three kinds of diatomite with different particle size was treated by silane coupling agent.PP/diatomite composites were prepared by melt blending process,and the tensile strength of the composites were tested.The interfacial interaction parameter B and the bond angle θ were intruduced to quantitatively characterize the bond strength of particle-filled polymer composites.The results show that：the tensile strength of the composites decreases with the increase of diatomite volume fraction;the B values of the composites range from 1.12 to 1.56,all of which are less than 3,it means the diatomite could not reinforce the PP resin under the testing condition;the θ values of the composites range from 57.91° to 73.74°,and when B value is big,θ value is relatively small.Therefore,both B and θ are suitable for characterizing the interfacial bond strength of particle-filled polymer composite.

关 键 词：硅藻土 聚丙烯 复合材料 黏结强度 定量表征 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]