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题名: A novel reutilization method for waste printed circuit boards as flame retardant and smoke suppressant for poly (vinyl chloride)
作者: Xiu, Fu-Rong; Weng, Huiwei; Qi, Yingying; Yu, Gending; Zhang, Zhigang; Zhang, Fu-Shen
刊名: JOURNAL OF HAZARDOUS MATERIALS
出版日期: 2016-09-05
卷号: 315, 页码:102-109
关键词: WEEE ; Waste PCB ; Reutilization ; Flame retardant ; Smoke suppressant
DOI: 10.1016/j.jhazmat.2016.04.076
部门归属: 固体废弃物处理与资源化实验室
英文摘要: In this study, a novel reutilization method for waste printed circuit boards (PCBs) as flame retardant and smoke suppressant for poly (vinyl chloride) (PVC) was successfully testified. A supercritical water oxidation (SCWO) process was applied to treat waste PCBs before they could be used as flame retardants of PVC. The results indicated that SCWO conditions had a significant effect on the flame retarding and smoke suppressing properties of waste PCBs for PVC. Cu2O, CuO, and SnO2 were the main active ingredients in waste PCBs-derived flame retardants. A conversion of Cu elements (Cu-0 -> Cu+-> Cu2+) during SCWO process with the increase of reaction temperature was found to be the key influence factor for the flame retarding properties of SCWO-treated PCBs. The experiment results also showed that there was a synergistic effect of flame retardancy between Cu+ and Cu2+. After the optimized SCWO treatment, SCWO-treated PCBs significantly improved the flame retardancy and smoke suppression of PVC. Limiting oxygen index (LOI) and char yield (CY) increased with increasing SCWO-treated PCBs content in PVC, while smoke density rating (SDR) and maximum smoke density (MSD) decreased markedly. The mechanical properties of PVC samples were influenced in different degree by adding different content SCWO-treated PCBs. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35773
Appears in Collections:固体废弃物处理与资源化实验室_期刊论文

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