LIQUEFACTION OF PRINTED CIRCUIT BOARD BY USING WASTE BIOMASS DERIVED TAR
Recovery of the useful materials from end-of-life electronic equipments is very important not only for reduction of waste materials but also for effective use of limited natural resources. Recently, we showed that approximately 50 wt％ of epoxy board was dissolved in tar derived from dry distillation of Japanese cedar at 220 ℃ under atmospheric pressure. However, solubilization rate of the waste printed board was insufficient for practical industrializing.In this work, more than 70 wt％ of Japanese cedar converted into tar by heating it in some organic solvents at 300 ℃. Epoxy printed circuit boards were solubilized almost completely in the tar at 250-300 ℃. Moreover, urethane, FRP, PET, and polycarbonate were also solubilized. Character of the tar was very sensitive to the temperature of tar formation.
Tohru Kamo Liu.Yufeng Naoya Akaishi Mariko Adachi Hajime Yasuda Hideki Nakagome
National Institute of Advanced Industrial Science and Technology (AIST),16-1 Onogawa, Tsukuba 305-85 Chiba University, Faculty of Engineering, 1-33 Yayoi-cho, Inage-ku,Chiba-shi 263-8522,Japan
国际会议
成都
英文
186-192
2009-10-11（万方平台首次上网日期，不代表论文的发表时间）