Characterization of Spent Printed Circuit Boards from Computers
作者： Zhiwei Peng , Jiaxing Yan , Hongjin Zhang , Xiaolong Lin , Jiann-Yang Hwang
DOI: 10.1007/978-3-319-51382-9_55
关键词: Zinc 、 Metal 、 Copper 、 Printed circuit board 、 Scanning electron microscope 、 Epoxy 、 Metallurgy 、 Materials science 、 Tin 、 Fourier transform infrared spectroscopy
摘要: The pollution caused by the spent printed circuit boards (PCBs) is currently a concern of researchers and environmental managers due to its large quantity exceptionally complex properties. This study characterized from discarded computers using number characterization techniques, including chemical analysis, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), granulometric analysis scanning electron microscopy (SEM). PCBs contain approximately 50 wt% metals, 25 glass fibers polymers. principal metals include copper, calcium, tin, aluminum, zinc lead. They are still wrapped brominated epoxy resin after preliminarily crushed. As precious such as gold silver, barely found in PCBs, copper tin main metallic elements recycling value which warrants extra attention.
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