The Properties of Treating Waste Printed Circuit Boards by Ionic Liquids

DONG Jing-hao; YAN Wen-hui; ZHANG Ting; GUO Heng-bo; SONG Liu-yu

doi:10.15938/j.jhust.2019.04.022

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The Properties of Treating Waste Printed Circuit Boards by Ionic Liquids

更新时间：2026-08-31

- The Properties of Treating Waste Printed Circuit Boards by Ionic Liquids
- Vol. 24, Issue 4, Pages: 133-138(2019)
- 作者机构：
  
  哈尔滨理工大学化学与环境工程学院,黑龙江,哈尔滨,150040
- 作者简介：
- 基金信息：
- DOI：10.15938/j.jhust.2019.04.022
  CLC： O436
- Published：2019
- 稿件说明：
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DONG Jing-hao, YAN Wen-hui, ZHANG Ting, et al. The Properties of Treating Waste Printed Circuit Boards by Ionic Liquids[J]. 2019, 24(4): 133-138.
DOI：

DONG Jing-hao, YAN Wen-hui, ZHANG Ting, et al. The Properties of Treating Waste Printed Circuit Boards by Ionic Liquids[J]. 2019, 24(4): 133-138. DOI： 10.15938/j.jhust.2019.04.022.

摘要

针对废旧印刷电路板处理不当带来的环境污染和资源浪费，本研究使用由两步合成法制备的咪唑类离子液体1-丁基-3甲基咪唑硫酸氢盐（［Bmim］HSO4）为处理液，探究［Bmim］HSO4分解电路板的特性，考察温度、加热时间及电路板尺寸大小对电路板分解程度的影响。在温度270℃、加热时间20±2min、电路板尺寸大小为2×2cm2条件时，溴化环氧树脂的溶解程度最大，电路板的分解程度最大；另外，回收的［Bmim］HSO4化学组分基本无变化，可循环使用。电路板经［Bmim］HSO4处理后，铜箔、焊料和玻璃纤维自动分离便于后续的回收，为废旧印刷电路板的无害化处理和资源回收提供了一条新途径。

Abstract

Improper treatment about waste printed circuit boards (WPCBs) cancause serious environmental pollution and resources waste. In this study

1-butyl3-methyl-imidazoliumhydrogen sulfate (［Bmim］HSO4)was synthesized through two-step reactionSeparation properties of WPCBs treated by ［Bmim］HSO4 was investigated. The influence oftreatment temperature

reaction time and particle size of WPCBs ondismantlement of WPCBs were focused. Experimental results indicated that WPCBscan be separated efficiently and non-polluted. The maximum dissolution of brominated epoxy resin (BER)in WPCBs occurred by controlling the system temperature

heating time

the sizeof WPCBs at 270℃

20±2min and 2×2cm2

respectively. The used［Bmim］HSO4 canbe recycled. This study offers an effectively way to recycle WPCBs and preventthe environmental pollution of WPCBs.［1］LU Chenyu

ZHANG Lin

ZHONGYongguang

et al. An Overview of E-wasteManagement in China［J］.Mater Cycles Waste Manag (2015) 17:1.

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