PVC/重晶石纳米复合材料力学性能与形态研究  

Study on the Mechanical Properties and Structue of PVC/BaSO_4 Nano-Composites

作　　者：徐妍[1] 张小哲[1] 周持兴[1] 吴卫生[1] 施利毅[2] 杨斌[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240 [2]上海大学纳米科学与技术研究中心,上海200444

出　　处：《高分子材料科学与工程》2007年第5期144-147,151,共5页Polymer Materials Science & Engineering

摘　　要：研究了新型无机功能填料——纳米硫酸钡(nano-BaSO4)的表面处理及添加量对聚氯乙烯(PVC)力学性能的影响以及纳米粒子在PVC基体中的分散情况。结果表明,添加1%经过硬脂酸处理的纳米硫酸钡可以对PVC基体产生显著的增韧补强作用,其冲击断面呈现明显的韧性断裂特征。且SEM微观形貌观察表明,纳米粒子在PVC基体中分散良好。In this paper, poly （vinyl chloride）/BaSO4 （PVC/BaSO4） nano-composites was prepared by means of melt mixing. And the influence of filler surface treatment on the mechanical properties of PVC/BaSO4nano-composites was investigated. It was proved that nano-BaSO,treated by stearic acid can contribute to the uniform dispersion of nano-fillers in the matrix and improve the strength and toughness of the composites greatly, in which the preferred content is 10~. In addition, the micro-structure and the fracture section of PVC/ BaSO4nano-composites were studied with SEM. The morphology photograph shows that the binary composite occurs a brittle-ductile transition by adding nano-BaSO4（1%） treated by stearic acid.

关 键 词：聚氯乙烯 纳米硫酸钡 表面处理 力学性能 

分 类 号：TB383[一般工业技术—材料科学与工程]