摘要
Abstract
Diatomite was modified with aluminate coupling agent in aqueous solution which was used to prepare PVC/diatomite composites. FTIR, TG, DMA, and micro hardness tester were used to investigate and analyze the effect of the modification of diatomite on the properties of the composites. It showed that with the surface of diatomite modified, the tensile strength, non-notched impact strength, and Vickers hardness of the composites increased by 20. 1%, 4.7 %, and 23.5 %, respectively, but bending strength and modulus decreased slightly. TG showed that aluminate coupling agent had an auxiliary role of thermo-stahilization on PVC/diatomite composites. After the modification, E′, E″ and tanδ of the composites were reduced and then increased with increasing temperature, and glass transition temperature increased by 1.77℃.关键词
聚氯乙烯/铝酸酯偶联剂/硅藻土/改性/复合材料Key words
poly(vinyl chloride)/aluminate coupling agent/diatomite/modification/composite分类
化学化工
