Study on low-temperature pyrolysis of large-size printed circuit boards
作者： Xiaojuan Guo , Frank G.F. Qin , Xiaoxi Yang , Runhua Jiang
DOI: 10.1016/J.JAAP.2013.10.014
关键词:
摘要: Abstract An energy-saving pyrolysis process of FR4-type printed circuit board (PCB) was designed with lower temperature (500 °C) and large-size PCB sample (16–20 cm 2 ). The experiment the carried out based on process. properties pyrolytic gas tar were compared to results previous high (800 °C) small-size (1.5–2 cm or powder). Endothermic heat reaction calculated data collected. showed that: (1) produced 10.17 wt% gas, 18.23 wt% 71.60 wt% solid particle. Similar studies, CO, CO , 2-methyl propene main components in consisted phenol alkyl aromatics. However, content propylene, bromomethane, bromine significantly different this study. (2) Metals fiberglass easier be separated case regular 800 °C final sample. Copper sheets which adhere a plenty carbon collected manually; little amount gold nickel stayed residue. (3) is about 19.692 MJ/kg. calorific capacity 2.386 MJ for 4.502 MJ from each kilogram pyrolysis. overall accounts 35% required heat.
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