摘要
用DSC手段研究了物理共混合反应共混制备的聚丙烯(PP)/八乙烯基多面齐聚倍半硅氧烷(OvPOSS)复合材料的非等温结晶和熔融行为.结果表明:物理共混中OvPOSS具有β晶成核剂的作用,反应共混时PP的β晶消失,成核作用更为显著,结晶速率更高.采用Ozawa法和莫志深法对材料的非等温结晶动力学进行了研究,表明材料的结晶动力学行为符合Mo-Avinm-Ozawa方程.
The crystallization and melt behavior of physical blending and reactive blending polypropylene (PP)/octavinyl polyhedral oligomeric silsesquioxane (OvPOSS) composites were studied with differential scanning calorimetry tests. For the physical blending composite, OvPOSS could act as β nucleating agents and increase the crystallization rate. While for the reactive blending composite, the β-form crystalline disappeared and the crystallization rate increased greatly due to the significant nucleating effect of reactive OvPOSS. The nonisothermal crystallization kinetics of PP/OvPOSS composites was studied with Ozawa's method and Mo's method and the crystallization kinetics behavior of the materials agreed with the Mo- Avinm-Ozawa equation.
出处
《兰州大学学报(自然科学版)》
CAS
CSCD
北大核心
2009年第1期60-64,共5页
Journal of Lanzhou University(Natural Sciences)
基金
上海市重点学科建设项目(P1502)
上海应用技术学院引进人才启动基金项目(YJ2006-17)
上海市优秀青年教师专项基金项目(K08202)
关键词
聚丙烯
多面齐聚倍半硅氧烷
非等温结晶动力学
polypropylene
polyhedral oligomeric silsesquioxane
nonisothermal crystallization kinetics