摘要
研究了四脚状氧化锌晶须用量、表面处理剂对其聚丙烯复合材料的力学性能、流变行为、耐热性等影响.结果表明:晶须用量为10%,硅烷偶联剂KH-570用量为0.5%时,复合材料的拉伸强度提高到118.6%,弯曲强度提高到118.3%.红外光谱分析:经偶联剂处理后的晶须表面出现了羰基、C—O—C、Si—O等基团.SEM分析表明:复合材料的断裂界面明显得到改善.T-ZnO_w/PP复合材料的非牛顿指数大于纯PP而更趋于牛顿性流体,体系的流动性和加工性得到明显改善.
The amounts of tetra-pod like zinc oxide whiskers （T-ZnOw） used, the surface treating of the whiskers, the mechanical properties, rheological behavior and heat-resistance of the polypropylene composites were investigated. The results showed that the tensile strength of the composites was enhanced to 118.6%, bending strength enhanced to118.3%, when KH-570 was used as a coupling agent, the amount of KH-570 to be 1.0w%, the amount of whiskers about 10w% in the system. The infrared spectrometry showed that the surface of whiskers was increased carbonyl, C-O-C, Si-O groups after treating by the coupling agents. Furthermore, scanning electron microscopy analyses revealed the improved morphologies of the fractured surfaces of the composites. The non-Newtonian exponential of T-ZnOw/PP was higher than that of PP generally, so it was more like Newtonian fluid and the melt flow ability and processing stability of PP were obviously improved after the adding of T-ZnOw to PP.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2007年第5期465-470,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金重点项目59431040
辽宁省教育厅科学研究基金项目9810301003
沈阳市应用开发重点项目1032040-1-03-01资助.
