Recycling and Reutilization of Nonmetallic Materials from Waste Printed Circuit Board
(0) The recycling of waste printed circuit board (WPCB) is valuable as the purity of precious metals in WPCB is more than 10 times higher than that of rich-content minerals.However,a large number of nonmetallic materials (NMs) are generated when recycling metals contained in WPCB.The NMs mainly consisted of glass fibers and resin powder.The reinforcing characteristics of glass fibers in the NMs provided the possibility of treating the NMs with filling methods.In this paper,the NMs were used to prepare 3 kinds of nonmetal products successfully,including phenolic molding compounds (PMC),wood plastic composites (WPC),and nonmetallic plate (NMP).Three different preparing processes of nonmetal products were well illustrated.Effects of filling content and particle size of the NMs on the properties of nonmetal products were also studied.The results show that the filling of NMs did not reduce the properties of composites,and the nonmetals products qualified relative standards.In addition,leaching tests were used to characterize leaching behavior of nonmetal products.The leaching results show that heavy metal concentrations such as Cu and Pb in the leachates were far below the standard limits.It indicates that filling method was safe and environment-friendly for treating the NMs as the hazardous materials could be well solidified in the resin matrix.As a result,this paper provided some choices for treating the NMs with filing methods,achieving the comprehensive utilization of the NMs.
Jie Guo Zhenming Xu
School of Environmental Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road,Building of Environment.Shanghai,P.R.China,200240
国内会议
SAMPE中国2013先进复合材料制品、原材料、工装及工程应用展览会
上海
英文
1-8
2013-10-29（万方平台首次上网日期，不代表论文的发表时间）