废旧印刷线路板的热重分析及热解动力学模型  

Thermogravimetric Analysis and Pyrolysis Kinetics Models of Waste Printed Circuit Board

作　　者：赵跃[1] 薛勇[1] 黄强 邓欣逸[1] 张义烽[1] 

机构地区：[1]西南科技大学环境与资源学院固体废弃物处理与资源化教育部重点实验室,四川绵阳621010 [2]绵阳市环境监测站,四川绵阳621010

出　　处：《化工环保》2011年第6期482-485,共4页Environmental Protection of Chemical Industry

基　　金：教育部固体废弃物处理与资源化重点实验室项目(08ZXGP02)

摘　　要：采用热重(TG)分析法研究了废旧FR4型印刷线路板(PCB)的热解特性,探讨了不同升温速率下废旧PCB的TG和微分热重(DTG)曲线及变化规律,利用Starink法精确求解热解反应活化能(E),利用Malek法判断得出废旧PCB的热解动力学机理函数和指前因子(A)。研究结果表明:废旧FR4型PCB的TG和DTG曲线随着升温速率的增大逐步向高温区移动;起始热解温度、最大失重速率对应温度以及终止热解温度也随着升温速率的增大而升高;废旧FR4型PCB的E和A分别为105.75 kJ/mol和7.89×108 min-1。The pyrolysis characteristics of waste FR4 type printed circuit board （ PCB ） was studied by thermogravimetric （TG） analysis method. The TG and differential thermogravimetry （DTG） curves of the waste PCB at different heating rate and their changing rules were explored. The activation energy （E） of the pyrolysis reaction was solved exactly by Starink method. The mechanism function and preexponential factor （A） were obtained by Malek method. The research results show that： The TG and DTG curves of waste FR4 type PCB move to the high-temperature zone progressively with the increase of heating rate; The initial pyrolysis temperature, the temperature corresponding to the maximum weight loss rate and the terminated pyrolysis temperature also increase with it; The E and A of the waste PCB are 105.75 kJ/mol and 7.89 ×10^8min^-1 respectively.

关 键 词：废旧印刷线路板 热解 热重分析 动力学 

分 类 号：X705[环境科学与工程—环境工程]