摘要
将功能化聚乙烯蜡 /有机蒙脱土插层复合母粒与聚丙烯 (PP)共混 ,制备了有机蒙脱土填充的聚丙烯 .采用X 射线衍射分析、差示扫描量热等温结晶分析和非等温结晶分析方法研究了有机蒙脱土复合母粒对聚丙烯结晶性能的影响 ,采用阿夫拉米 (Avrami)方程的Jeziorny修正法研究了聚丙烯的非等温结晶动力学 .结果表明 ,一部分有机蒙脱土可进一步被PP插层 ,使层间距增大 ,同时有机蒙脱土复合母粒使一部分PP由α晶型转变为β晶型 .有机蒙脱土复合母粒填充PP的最快结晶的温度为 4 0 0K .有机蒙脱土复合母粒能有效促进PP异相成核 ,提高PP的结晶速率和结晶温度 ,但对结晶速率常数影响不大 .
Organic montmorillonite filled polypropylene was prepared by blending functionalized polyethylene wax organic montmorillonite intercalated master batches with polypropylene. The effects of the organic montmorillonite master batches on the crystallization property of polypropylene were investigated by means of X ray diffraction, isothermal and non isothermal differential scanning calorimetry analyses. Non isothermal crystallization kinetics of polypropylene was also studied by the modified Avrami theory of Jeziorny. The results indicate that some organic montmorillonites can be intercalated by polypropylene, leading to an increase in their interlayer distance, and the crystal form of partial polypropylene is changed from α to β with the existence of organic montmorillonite master batches. The filled polypropylene crystallizes fastest at 400 K. The results also show that organic montmorillonite master batches can effectively accelerate the heterogeneous nucleation of polypropylene and increase its rate of crystallization and crystallizing point, but they do not affect the rate constant of crystallization.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第10期1-5,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
教育部骨干教师计划资助项目
关键词
功能化聚乙烯蜡
有机蒙脱土
插层复合母粒
填充聚丙烯
结晶性能
functionalized polyethylene wax
organic montmorillonite
intercalated master batch
filled polypropylene
crystallization property
