实验采用矿泉水瓶专用PET粒料,通过热分析技术,在不同的升温速率下得到PET的热分解曲线。通过Kissinger法和Freeman-Carroll法对热分解曲线进行处理,得到PET的表观活化能E为302．36kJ·mol-1,指前因子A为4．2×1023 min-1,反应级数n为0．5。并通过阿仑尼乌斯方程得到PET的热分解寿命方程：lnt=21695/T-31．71。
This experiment uses PET special granular of mineral water bottle,by thermal analysis technique in different heating rates obtained PET thermal decomposition curves. By Kissinger method and Freeman Carroll meth-od on the thermal decomposition curve processing,get the pet apparent activation energy E is about 302. 36kJ·mol-1 , referring of the factor A is 4. 2 × 1023 min-1 and the reaction order n is 0. 5. And through the Arrhenius equation to get the PET thermal degradation life equation:lnt=21695/T-31. 71.
参考文献
| [1] | 王蒙;王明召.PET塑料的化学降解[J].中国教育技术装备,2011(9):32-33. |
| [2] | 向斌.PET塑料瓶安全性解析[J].中国包装,2010(09):54-55. |
| [3] | T. Barany;J. Karger-Kocsis;T. Czigany.Effect of hygrothermal aging on the essential work of fracture response of amorphous poly(ethylene terephthalate) sheets[J].Polymer Degradation and Stability,20032(2):271-278. |
| [4] | 张建军;王瑞芬;王淑萍;白继海.双核铕-苯甲酸-邻菲咯啉三元络合物非等温热分解动力学研究[J].分析化学,2004(10):1371-1374. |
| [5] | 郭满满;肖卓炳.Kissinger法和Freeman-Carroll法研究杜仲绿原酸的热解机理[J].中国食品添加剂,2011(6):56-59. |
| [6] | 张治国;尹红.聚氧丙烯醚的非等温热分解动力学及寿命[J].浙江大学学报（工学版）,2006(4):689-693. |
| [7] | 张洪伟;俞昊;汪宏斌;李文刚;季诚昌.PET/PbS纳米复合材料的热降解动力学研究[J].合成纤维,2010(4):6-9,13. |
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