TA的每日心情 | 擦汗 2019-6-16 23:34 |
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签到天数: 1277 天 [LV.10]大乘
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本帖最后由 冰蚁 于 2015-5-26 10:37 编辑
PCB application from wiki,主要是用其绝缘/导热性能。所以不是除草剂用的,但是杀虫剂里曾用过。
PCBs were used as coolants and insulating fluids (transformer oil) for transformers and capacitors, such as those used in old fluorescent light ballasts.[13] PCBs were also used as plasticizers in paints and cements, stabilizing additives in flexible PVC coatings of electrical wiring and electronic components, pesticide extenders, cutting oils, reactive flame retardants, lubricating oils, hydraulic fluids, and sealants (for caulking in schools and commercial buildings[14]), adhesives, wood floor finishes (such as Fabulon and other products of Halowax in the U.S.),[14] paints, de-dusting agents, waterproofing compounds, casting agents, vacuum pump fluids, fixatives in microscopy, surgical implants, and in carbonless copy ("NCR") paper.[1] Because of its use as a plasticizer in paints and especially "coal tars" that were used widely to coat water tanks, bridges and other infrastructure pieces it is recommended that before sandblasting to remove these materials the existing coal tar should be tested first to see if PCBs are present. |
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