中南大学学报（自然科学版）2011，Vol.42Issue(3)：610-616,7.
废弃环氧树脂电路板的热解机理及动力学研究
Mechanism and kinetics of pyrolysis of discarded epoxy printed circuit boards
摘要
Abstract
Reaction mechanism and kinetic behavior of discarded epoxy printed circuit board pyrolysis were studied by means of the thermogravimetric analysis (TGA) technique in nitrogen and vacuum conditions. The results show that there are two steps in the thermal decomposition of PCB. In the first step, some moisture and smaller molecules are lost. And then macromolecule pyrolysis in PCB take place in the second step. The second step can disassemble into two phases.The pyrolysis reaction of the first phase in nitrogen and vacuum conditions belongs to the A3 mechanism with nucleation and nuclei growth reaction as the control step. The second phase in nitrogen and vacuum belongs to the C1.5 mechanism with power law reaction as control steps. The apparent active energy of two phases is: 239.95, 130.73 kJ/mol (in nitrogen), 74.24, 41.64 kJ/mol (in vacuum) respectively, and the frequency factor is 1.94×1022 s-1, 1.88× 1013 s-1 (in nitrogen), 1.52× 108 s-1, 5.16× 1010 s-1 (in vacuum) respectively.关键词
电路板/热裂解/反应机理/动力学分类
资源环境引用本文复制引用
湛志华,丘克强..废弃环氧树脂电路板的热解机理及动力学研究[J].中南大学学报（自然科学版）,2011,42(3):610-616,7.基金项目
国家"863"计划项目(2006AA06Z375) （2006AA06Z375）
广东省社会发展计划项(2006A36703002) （2006A36703002）
