PP/PVC共混体系的热反应性研究  

Study on Thermal Reactions of PP/PVC Composites

作　　者：何小芳[1] 王优[1] 王志钢[2] 曹新鑫[1,3] 王运霞[1] 黄丽娜[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]东华大学材料科学与工程学院,上海201620 [3]环境友好型无机材料河南省高校(河南省)重点实验室培育基地,焦作454000

出　　处：《材料导报》2014年第4期103-106,共4页Materials Reports

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：利用同步热分析仪对不同质量分数下聚丙烯(PP)和聚氯乙烯(PVC)共混物从室温升至800℃热降解过程进行了研究。用Kissinger、Flynn-Wall-Ozawa等对PP/PVC共混体系的热反应性能进行研究。结果表明,随着PVC含量的增加,共混体系的热降解过程逐渐表现为两个热降解阶段,体系两个阶段的活化能都有不同程度的降低;熔融峰温相对于纯PP均得以升高,而共混体系的结晶度逐渐下降。由Kissinger法得出,当PVC的质量分数为10%时,第二阶段的Ea最小(191.462kJ/mol),较纯PVC降低了33.56kJ/mol。Abstract Using synchronous thermal analyzer under different mass fractions of polypropylene （PP） and poly- vinyl chloride （PVC） blends from room temperature to 800 ℃ thermal degradation process was studied. Thermal reac- tions of PP/PVC composites were studied by Kissinger, Flynn-Wall-Ozawa, etc. The results show that, with PVC content increases, the thermal degradation process blends gradually manifested as two thermal degradation process, a two-stage system has a significantly lower activation energy; melting peak temperature relative to pure PP were able to increase, while the degree of crystallinity blends gradually decreased. When the mass fraction of PVC was 10%, the Ea of the second stage has reached the minimum （191. 462 kJ/mol） by Kissinger method, lower than the pure PVC 33. 56 kJ/mol.

关 键 词：聚丙烯 聚氯乙烯 热反应 同步热分析仪 

分 类 号：TQ322.2[化学工程—合成树脂塑料工业]