Investigation on Dissolution of Brominated Epoxy Resin Using Ionic Liquid [Bmim]Cl from Waste Printed Circuit Boards

Abstract:

Treatment technology of brominated epoxy resin (BER) is still a big challenge to waste printed circuit boards (PCBs) recycling. In order to make full use of the materials, ionic liquid 1-butyl-3-methyl imidazole chloride ([Bmim]Cl) was used to dissolve BER to separate glass fibers from PCB nonmetallic powders. The effects of dissolving parameters including temperature, time and solid/ liquid ratio on the dissolution rate of BER were investigated. The dissolved BER were regenerated and were characterized by FTIR and thermal analysis. Results showed that [Bmim]Cl was a good direct solvent for BER dissolution and at a suitable condition of 170°Cfor 6 hours with solid/liquid ratio of 1: 20 (g/g), nearly 90% of BER in original powders were dissolved. The possible dissolution mechanism was also discussed.

• Periodical: Applied Mechanics and Materials (Volume 768)
• Pages: 588-594
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.768.588
• Online since: June 2015
• Authors: Min Xu, Jing Wei Wang, Yu Xing Mao, Hong Yong Xie
• Keywords: [Bmim]Cl, Brominated Epoxy Resin, Dissolution, Waste Printed Circuit Board

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