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The general utilizations of scrap PC board

机译:废PC板的一般用途

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摘要

Traditionally burning process is used to recover copper from scrap PC board. This process causes serious environmental problem. In this report a new process was developed which not only has not pollution problem, but also fully utilized all materials of the PC board. The scrap PC board was crushed and ground, then placed in a NH_3/NH_5CO_3 solution with aeration to dissolve copper. Pure copper oxide which was about 0.2 micron in size and was elliptical was obtained by distilling the copper NH_3/NH_5CO_3 solution and then heating the distilled residue. After the PC board powder was leached with 6 N hydrochloric acid to remove tin and lead, it was used as a filler in PVC plastics. The PVC plastics with 9% PC board powder as filler was found to have the same tensile strength as unfilled plastics, but had higher elastic modulus, more scratch resistance, and was cheaper.
机译:传统上,燃烧过程用于从废PC板中回收铜。该过程导致严重的环境问题。在本报告中,开发了一种新工艺,该工艺不仅没有污染问题,而且还充分利用了PC板的所有材料。碎PC板被压碎并磨碎,然后放入曝气的NH_3 / NH_5CO_3溶液中以溶解铜。通过蒸馏NH_3 / NH_5CO_3铜溶液,然后加热蒸馏的残余物,获得尺寸约为0.2微米的椭圆形的纯氧化铜。用6 N盐酸浸提PC板粉末以除去锡和铅后,将其用作PVC塑料中的填料。发现具有9%PC板粉作为填充剂的PVC塑料具有与未填充塑料相同的拉伸强度,但是具有更高的弹性模量,更多的耐刮擦性并且更便宜。

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