引用本文:
肖卫东, 何培新, 何本桥. Al2O3·3H2O阻燃环氧树脂机理探讨[J]. 应用化学,
2000, 17(4): 397-400.
Citation: XIAO Wei-Dong, HE Pei-Xin, HE Ben-Qiao. On the Flame-retarding Mechanism of Al2O3·3H2O Towards Cured Epoxy Resin[J]. Chinese Journal of Applied Chemistry, 2000, 17(4): 397-400.
Citation: XIAO Wei-Dong, HE Pei-Xin, HE Ben-Qiao. On the Flame-retarding Mechanism of Al2O3·3H2O Towards Cured Epoxy Resin[J]. Chinese Journal of Applied Chemistry, 2000, 17(4): 397-400.
Al2O3·3H2O阻燃环氧树脂机理探讨
摘要:
采用氧指数测定法与热重法研究了Al2O3·3H2O对环氧树脂固化物的阻燃效果与机理.结果表明,Al2O3·3H2O在热分解方面与树脂固化物有阻燃匹配性,并能以零级反应快速失去2个结晶水分子,失水后形成的活性氧化铝促进了树脂固化物热解时转化成难燃物的能力,具有较高的阻燃效果.
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关键词:
- 环氧树脂
- / Al2O3·3H2O
- / 活性氧化铝
- / 阻燃机理
English
On the Flame-retarding Mechanism of Al2O3·3H2O Towards Cured Epoxy Resin
Abstract:
The influence of Al2O3·3H2O on flame-retardation of its mixture with cured epoxy resin was briefly investigated by thermogravimetry and oxygen index determination. The results showed that Al2O3·3H2O losses 2 molecules of its crystal water quickly at 200~310℃, becoming an active alumina, which is capable of transfer the resin into a flame-retarding compound at higher temperatures. The flame-retardation of the mixture is likely due to the synergistic reactions of Al2O3·3H2O with epoxy resin at high temperatures.
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Key words:
- epoxy resin
- / Al2O3·3H2O
- / active alumina
- / flame-retardation mechanism
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