粉煤灰/聚丙烯复合材料的非等温结晶动力学行为  

Non-isothermal Crystallization Kinetics Behavior of Fly Ash/Polypropylene Composites

作　　者：何小芳[1,2] 罗四海[1] 张崇[1] 曹新鑫[1] 

机构地区：[1]河南理工大学材料科学与工程学院,焦作454000 [2]东南大学材料科学与工程学院,南京211189

出　　处：《机械工程材料》2014年第1期79-85,共7页Materials For Mechanical Engineering

基　　金：河南省高等学校矿业工程材料重点学科开放实验室开放基金项目(MEM11-10);河南省煤矿安全生产项目(H12-089);河南理工大学博士基金资助项目(B2013-10)

摘　　要：采用差示扫描量热仪研究了粉煤灰/聚丙烯(FA/PP)复合材料的非等温结晶行为,并探讨了基于Jeziorny法和莫志深法的结晶动力学,最后利用Flynn-Wall-Ozawa方程计算了纯PP和复合材料的结晶活化能。结果表明:在PP中加入FA后,复合材料的结晶起始温度To、结晶峰值温度Tp、Avrami指数n、半结晶时间t1/2和冷却速率F(T)均增大,结晶速率常数Zc降低;当FA的质量分数为15%时,复合材料的t1/2、活化能以及F(T)最小,Zc最大;FA/PP复合材料的结晶活化能均高于纯PP的。Non-isothermal crystallization kinetics behavior of fly ash （FA）/polypropylene （PP） composites was studied by differential scanning calorimetry （DSC）, and crystallization kinetics of Jeziorny and Mo methods was discussed, at last, The activation energy was computed by Flynn-Wall-Ozawa equation. The results show that, after adding FA into PP, the crystallization onset temperature （To）, crystallization peak temperature （Tp）, Avrami exponent n, half-time of crystallization （t1/2） and cooling rate F（T） of the composites increased, and crystallization rate constant （Zc） decreased. When FA adding content was 15wt%, tile, activation energy and F（T） was the smallest, and Zc was the highest. The activation energy of the composites were higher than the pure PP.

关 键 词：粉煤灰 聚丙烯 非等温结晶 动力学 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业] TQ315.14