| 溴代磷酸酯接枝PVA及其阻燃机理研究 |
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| 引用本文： | 马志邻 刘志广. 溴代磷酸酯接枝PVA及其阻燃机理研究[J]. 高分子材料科学与工程, 1998, 14(6): 99-101 |
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| 作者姓名： | 马志邻 刘志广 |
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| 作者单位： | [1]河北大学化学系 [2]河北广播电视大学保定分校 |
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| 摘 要： | 用溴代磷酸酯酰氯与聚乙烯醇在不同条件下作用可得阻燃ＰＶＡ，研究了其反应原理，认为春通过酯交换反应将磷酯酸接枝到ＰＶＡ上。通过ＴＧ、ＤＴＡ及ＳＥＭ对其阻燃机理进行了研究。
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| 关 键 词： | 聚乙烯醇 溴代磷酸酯 阻燃 接枝共聚 |
A STUDY OF THE BROMOPHOSPHATE GRAFTING REACTIONS ONTO PVA AND THE FLAME RETARDANT MACHANISM |
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| Ma Zhiling,Zhao Wenge,Hu Hanfang. A STUDY OF THE BROMOPHOSPHATE GRAFTING REACTIONS ONTO PVA AND THE FLAME RETARDANT MACHANISM[J]. Polymer Materials Science & Engineering, 1998, 14(6): 99-101 |
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| Authors: | Ma Zhiling Zhao Wenge Hu Hanfang |
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| Abstract: | Poly(vinyl alcohol) (PVA) has plentiful hydroxyl group, can be as carbon source form flameretardant intumescent system with phosphorus containing compounds. The machanism of fireproofing PVA were studied.Bromophosphate chloride reacts on PVA in non aqueous medium, organobase as catalyst. It may be grafting onto PVA by ester exchange reaction, it shows by IR, TG and DTA that the introduce of phosphate, leading to a decelerration of decomposition within the temperature range of combustion and reduction of heat release. It is confirmed that the PVA intumescent on heating forms a three dimensional space thick framework, high strength char, these comply with the flameretardant machanism of intumescent solid phase. |
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| Keywords: | grafting PVA fireproof bromophosphate ester exchange reaction flameretardant machanism |
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