印刷电路板酸性蚀刻废液回收工艺中电极反应过程动力学研究  

Study on the electrode process kinetics of recycle of spent acidic etchant for printed circuit board

作　　者：张建华[1] 罗小军 程华月[1] 蒋玉思[1] 崔静[1] 

机构地区：[1]广州有色金属研究院,广东广州510650 [2]广州赛爱环保技术开发有限公司,广东广州510663

出　　处：《材料研究与应用》2009年第4期273-275,283,共4页Materials Research and Application

基　　金：广东省科技计划项目(2007B080203003)

摘　　要：在印刷电路板酸性蚀刻废液中选用Ir系和Ru系电极作阳极,通过稳态动电位扫描和循环伏安扫描,对电极表面发生析氯和电积铜反应过程动力学进行了研究.在0.5 mol/L H_2SO_4溶液中及20kA/m^2电流密度下,Ir系钛阳极的强化使用寿命为Ru系钛阳极的20倍.Ir系钛阳极的析氯电位比Ru系钛阳极高,两种电极的析氯反应都属于不可逆反应.The electrodes in the system Ru and system Ir have been selected as anode used in the spent acidic etchant for printed circuit board. The electrode process kinetics of chlorine evolution and copper electrolytic deposition on the electrode surface has been investigated by the steady-state potentiodynamic scanning and cyclic voltammetry. The accelerating service life of electrode in the system Ir is twenty times as long as that in the system Ru in the 0.5 mol/L sulfuric acid solution under the current density of 20 kA/m^2 and the chlorine evolution voltage of the electrode in the system Ir is higher than that in the system Ru, too. The chlorine evolution reaction of both electrodes is an irreversible reaction.

关 键 词：酸性蚀刻液 动电位扫描 循环伏安扫描 动力学 阳极 

分 类 号：O646[理学—物理化学]