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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 thermal degradation process of polypropylene (PP) / slime composites was studied by thermogravimetric analysis. The apparent thermal activation energy (Ea) of PP / slime composites was determined by Kissinger, Friedman and Flynn-Wall Ozawa methods. the study. The results show that when the slime content is 5% (wt, mass fraction, the same below), 10% and 20% respectively, the thermal degradation starting temperature T0 is increased by 4 ° C, 7.48 ° C and 12.62 ° C. And with the increase of slime content, the Ea of the composites tends to increase at first and then decrease. When the slime content is 5%, the Ea reaches the maximum. The calculated Ea by the Kissinger method is 79.34 kJ / mol. It shows that the addition of slime improves the thermal stability of the material.