聚丙烯/煤泥复合材料热降解动力学研究  

Kinetics of thermal degradation of polypropylene/coal slime blend

作　　者：何小芳[1] 孙得翔 曹新鑫[1] 许明路 李杰飞[1] 

机构地区：[1]河南理工大学材料科学与工程学院,焦作454000

出　　处：《化工新型材料》2016年第2期169-171,174,共4页New Chemical Materials

基　　金：河南省安全生产科技发展计划(H12-089);河南理工大学博士基金(B2013-010);国家级大学生创新创业训练计划项目(201310460038)

摘　　要：用热重分析法研究了聚丙烯(PP)/煤泥复合材料的热降解过程,采用Kissinger、Friedman和Flynn-WallOzawa等方法对PP/煤泥复合材料的热降解表观活化能(Ea)进行研究。结果表明,煤泥含量分别为5%(wt,质量分数,下同)、10%和20%时,在升温速率β为5℃/min时热降解起始温度T0较纯PP分别提高了4℃、7.48℃和12.62℃。并且随着煤泥含量的增加,复合材料的Ea呈现出先增加后降低的趋势,当煤泥含量为5%时达到最大,由Kissinger法计算得出Ea较纯PP提高了79.34kJ/mol。说明煤泥的加入使材料的热稳定性能得到了改善。The non-isothermal degradation processes of coal slime/polypropylene（PP） composites were investigated by thermogravimetry analysis. The thermal degradation activation energies （Ea） were analyzed with Kissinger, Friedman, Flynn-Wall-Ozawa and so on. It indicated that when mass fraction of coal slime was 5 %, 10 - and 20 %, the thermal degradation temperatures increased 4℃, 7.48℃ and 12.62℃ respectively than pure PP at 5℃/rain heating rate. With the increase of the coal slime content,Ea of composite increased initially and then decreased. And the Ea reached the maximum when the mass concentration of coal slime was 5 % ,it increased 79.34 kJ/mol than pure PP by Kissinger method. It showed that coal slime can increase heat stability of pure PP.

关 键 词：煤泥 聚丙烯 热降解动力学 活化能 热稳定性 

分 类 号：TB332[一般工业技术—材料科学与工程]