Study on the Thermal Stability of PET/kaolin Nanocomposites
PET/kaolin nanocomposites were prepared with melt blending method. The thermal stability and the decomposition kinetics of nanokaolin and Polyethylene terephthalate (PET)/kaolin nanocomposites were studied using thermogravimetric analysis (TGA). Through the data analysis of TG, the parameters of decomposition kinetics were obtained respectively. Nevertheless there is a high ratio of surface atoms to body atoms, the modified nanokaolin have much surface defects and crystal lattice slack, thus the initial temperature of thermal decomposition and apparent activation energy decreased. Of three kinds of modification methods, the influence of compound modification on thermal stability is the most significant while SCA403 minimal.Compared to pure PET, the thermal stability of PET/kaolin nanocomposites decreases firstly, and then increase with the increasing of temperature. Result of decomposition kinetics indicated that the thermal decomposition rate increased and activation energy decreased if the modifier is 201 or SCA403, while compound modification, its apparent activation energy is 13KJ/mol higher than that of pure PET and the thermal stability is improved. In addition, the stability of the sample with 1％ nanokaolin is highest, but it will decline with the increasing of nanokaolin content, that is because too much nanokaolin will lead to aggregate and poor dispersion.
kaolin PET nanocomposites thermal stability
LU Yinping LIU Qinfu Zhao Jifen Fan Xuehui Niu Shengyuan
Institute of Material Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, Hennan, Department of Resource and Safety Engineering, China University of Mining and Technology, Beijing 10 Library of Henan Polytechnic University, Jiaozuo 454003, Henan, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
1890-1895
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）