热处理对PP／纳米SiO2／PA6／POE-g-MAH复合材料力学性能与结晶行为的影响  

Effect of Heat Treatment on Mechanical Properties and Crystallization of PP/Nano-SiO_2/PA6/POE-g-MAH Composite

作　　者：骆丁胜[1] 伍玉娇[1] 肖贤彬[1] 王珏[1] 

机构地区：[1]贵州大学材料科学与冶金工程学院

出　　处：《塑料工业》2008年第2期51-54,共4页China Plastics Industry

基　　金：国家863计划项目(2003AA32X230);贵州省工业攻关项目(黔科合GY字(2006)3013)资助

摘　　要：研究了不同热处理温度、热处理时间、冷却方式对PP/纳米SiO2/PA6/POE-g-MAH复合材料力学性能与结晶行为的影响。结果表明,随着热处理温度的升高,复合材料的缺口冲击强度直线下降,断裂强度与断裂伸长率显著提高;热处理时间的增加,对复合材料的缺口冲击强度、断裂伸长率和断裂强度影响显著,对拉伸强度影响较小;在复合材料结晶温度以下温度进行热处理,材料的综合力学性能下降,在结晶温度以上的温度进行热处理,采用快速冷却的冷却方式能够显著改善材料的综合力学性能。最佳热处理工艺:热处理温度为140℃,热处理时间为30min,水冷冷却。The effects of the temperature and time of heat treatment and cooling method on the mechanical properties and crystallization of PP/nano-SiO2/PA6/POE-g-MAH composite were studied. The results showed the notched impact strength linear decreased with the rise of the heat treatment temperature, while breaking strength and elongation at break increased sharply. The increase of the heat treatment time had obvious effect on the notched impact strength, elongation at break and breaking strength, but minification to tensile strength. The overall mechanical properties of composites became worse when the heat treatment was made under crystallizing point, but above the crystallizing point and cooled fast the mechanical properties became better. The optimum condition for the heat treatment was that the heat treatment temperature 140 ℃, heat treatment for 30 min and cooling in water.

关 键 词：热处理 聚丙烯 纳米SIO2 尼龙6 POE-G-MAH 力学性能 结晶行为 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业]