Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Recycling of Separate Glass Fiber from Waste Printed Circuit Boards Using Attrition Mill and DMF

어트리션 밀과 DMF 용매를 이용한 폐 인쇄회로기판에서 분리된 재생 유리섬유의 재활용

  • Kim, Jong-Seok (School of Chemical Engineering, Chonbuk National University) ;
  • Lee, Jae-Cheon (Mineral Resource Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Jeong, Jin-Ki (Mineral Resource Division, Korea Institute of Geoscience and Mineral Resources)
  • 김종석 (전북대학교 화학공학부) ;
  • 이재천 (한국지질자원연구원 광물자원연구본부) ;
  • 정진기 (한국지질자원연구원 광물자원연구본부)
  • Received : 2012.04.29
  • Accepted : 2012.07.09
  • Published : 2012.10.01
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Abstract

In recent years, recycling process has come to be necessary for separating metals, glass fibers and polymer from WPCBs (waste printed circuit boards) due to an increasing amount of electronic device waste. In this study, dimethylformamide (DMF) and attrition mill reactor were used to separate the component such as metals, glass fiber and epoxy resin from WPCBs. Separation of glass fiber from WPCBs was carried out under stirring rates 300~600 revolution per minute (rpm) for 1~2 h as the various agitator. The recycled glass fibers (RGF) were analyzed by thermogravimetric analyzer (TGA) for degree of separation of epoxy resin in the WPCBs. The degree of separation of epoxy resin of WPCBs increased in attrition mill agitator as a mechanochemical process for recycling WPCBs. The RGF separated in the WPCBs was applied as a reinforcement in the RGF/unsaturated polyester composites to reuse as a reinforcement.

폐 전자제품의 양이 지속적으로 증가하므로 폐 인쇄회로기판(WPCBs: waste printed circuit boards)의 재활용에서 금속과 유리섬유 및 에폭시 수지를 분리하는 방법에 대한 연구가 필요하다. 본 연구에서는 WPCBs로부터 금속과 유리섬유 및 에폭시 수지를 분리하기위해 dimethylformamide 용매와 어트리션 밀 반응기를 사용하였다. WPCBs에서 유리섬유의 분리는 다양한 교반기를 이용하여 교반속도를 300~600 rpm에서 반응시간을 1~2 h에서 반응을 수행하였다. WPCBs에서 에폭시 수지의 분리도를 재생 유리섬유의 열 중량 분석을 통해 분석하였으며 기계화학적 방법인 어트리션밀 교반기에서 에폭시 수지의 분리도가 증가하였다. 재생 유리섬유를 보강재로 재활용하기 위하여 재생 유리섬유/불포화 폴리에스테르 수지 복합재료로 적용하였다.

Keywords

References

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