木虫 (著名写手)
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【答案】应助回帖
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Carena: 金币+2, 感谢应助 2013-01-22 22:32:28
lysky0820: 金币+25, 翻译EPI+1, ★★★很有帮助 2013-01-23 08:55:14
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The decomposition of radical groups that contain phosphorus and nitrogen exert great effects on inflaming retarding of epoxy resin, because after the thermal decomposition of chemical compounds, the materials that contain phosphorus usually form gathering of polyphosphates and polyvinylidene phosphates which cover the surface of epoxy resin. This can not only insulate the air but also protect the burning zone of epoxy resin and prevent further burning of the inflammables. It can also contribute to the dehydration and carbonization effects of epoxy resin. And the materials that contain nitrogen form N2 or NH3, making the protection layer swell and spreading upon and inside the protection layer, which dilutes and insulates the oxygen in air. |
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