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.
出处
《青岛科技大学学报（自然科学版）》
CAS
2011年第2期145-149,共5页
Journal of Qingdao University of Science and Technology:Natural Science Edition
作者简介
张俊平（1986-），男，硕士研究生．
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