纳米-Al_2O_3/PP复合材料热降解动力学研究  

Kinetics of thermal degradation of nano-Al_2O_3/PP composite

作　　者：路阳[1] 王优[1] 李杰飞[1] 秦刚[1] 何小芳[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

出　　处：《化工新型材料》2016年第6期155-157,160,共4页New Chemical Materials

基　　金：河南省安全生产科技发展计划(H12-089);河南省教育厅高等学校重点科研项目(15A440006);国家自然科学基金青年基金(51403056)

摘　　要：通过双辊炼塑机上熔融共混制得纳米-Al_2O_3/PP复合材料,利用热重分析(TGA)法研究PP和纳米-Al_2O_3/PP复合材料的热降解行为,并采用Kissinger法和Flynn-Wall-Ozawa法分析了共混体系的表观活化能。结果表明:随纳米-Al_2O_3质量分数增加,PP热稳定性提高。根据Kissinger法,随着纳米-Al_2O_3含量的增加,共混物的活化能增加,当纳米-Al_2O_3含量为5%时,共混物的活化能达到最高,与未加入相比,提高10.12%;根据Flynn-Wall-Ozawa法,纳米-Al_2O_3含量为3%时达最大值,此后随着纳米-Al_2O_3含量的增加而减少。The PP/nano-Al2O3 composites were prepared by melting mixtures of nano-Al2O3 and PP using a tworoll plasticator.The thermal degradation behaviors of composites was studied by means of differential scanning calorimetry.Kissinger and Flynn-Wall-Ozawa methods were used to analyze the data of DSC.The experiment results showed that：with the nano-Al2O3 mass fraction increased,the thermal stability increased.According to the Kissinger method,along with the nano-Al2O3 content increased,the activation energy of blend was increased for about 10.12%.When w（nano-Al2O3）was5%,the activation energy was the highest.According to the Flynn-Wall-Ozawa method,it was up to the maximum when nano-Al2O3 content was 3%,then decreased with the nano-Al2O3 content increased.

关 键 词：聚丙烯 纳米氧化铝 热重分析 热降解 

分 类 号：TB332[一般工业技术—材料科学与工程]