作　　者： ; ; ; ;

机构地区： 黄河水利职业技术学院

出　　处： 《中国塑料》 2011年第9期48-55,共8页

摘　　要： 通过双螺杆挤出机制备出聚酰胺(PA)66/可反应性纳米SiO2(RNS)复合材料,采用Jeziorny法和Mo法对其非等温结晶行为进行了研究。结果表明,RNS具有较强的异相成核能力,能提高PA66的结晶速率,并使PA66的晶体结构和生长机制发生改变;通过对比PA66及其复合材料的结晶活化能发现RNS能够降低PA66的结晶活化能。 PA66/reactable nano-SiO2 composites were prepared in a twin-screws extruder by melt compounding. The non-isothermal crystallization of the composites and neat PA66 was studied through Jeziorny and Mo methods based on DSC analysis. It showed that reactable nano-SiO2 had a strong heterogeneous nucleation effect on PA66 matrix. Its addition increased the crystallization rate of PA66, and led to changes in crystal structure, growth mechanism, and activation energy of PA66.

关 键 词： 聚酰胺 可反应性纳米二氧化硅 复合材料 非等温结晶

领　　域： [化学工程]