聚丁烯-1/高岭土纳米复合材料的力学性能及其非等温结晶动力学研究  

Mechanical Properties and Non-isothermal Crystallization Kinetics of PB-1/kaolin Nanocomposites

作　　者：张俊平[1] 杨继搞[1] 薛美玲[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2011年第2期145-149,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

摘　　要：采用熔融共混法制备了聚丁烯-1/高岭土(PB-1/kaolin)纳米复合材料,运用SEM、DSC等分析了高岭土在PB-1中的分散以及高岭土用量对PB-1结晶行为和结晶动力学的影响。研究结果表明,当高岭土质量分数为2%时,高岭土在PB-1中呈纳米级分散;质量分数为6%时,出现轻微团聚现象。拉伸强度在高岭土质量分数为5%时达到最大值,而断裂伸长率、弯曲强度和弯曲模量在高岭土质量分数为4%左右时最佳。DSC结果表明,当高岭土质量分数超过2%时,显著地抑制了PB-1的结晶过程,但球晶的成核机制和三维生长方式不变。The poly（1-butene）（PB-1）/kaolin nanocomposites were prepared by melt-mixing.The dispersity of nano-kaolin was observed by SEM,and the effect of nano-kaolin content on the non-isothermal crystallization behavior and its kinetics of filled PB-1 were investigated by DSC method.The results indicate that nano-kaolin has better dispersity in PB-1/kaolin nanocomposites when the mass concentration of nano-kaolin was 2%,and nano-kaolin dispersion in the matrix of PB-1 reached a nanometer yardstick.There was slight agglomeration phenomenon when the mass concentration of nano-kaolin was 6%.The tensile strength achieved the maximum value when the concentration of nano-kaolin was 5%,and the elongation at break,the flexural strength and the flexural modulus were best when the mass concentration of nano-kaolin was 4%.DSC shows that the crystallization process of PB-1/kaolin nanocomposites were significantly inhibited when the mass concentration of nano-kaolin was more than 2%,but the nucleation and three-dimensional growth mechanism of spherulites keep invariant.

关 键 词：聚丁烯-1 高岭土 纳米复合材料 结晶动力学 

分 类 号：TQ311[化学工程—高聚物工业]