学术研究： 多磷酸铵-氢氧化铝在阻燃丁二烯-苯乙烯嵌段共聚物中的对抗性

Ammonium polyphosphate–aluminum trihydroxide antagonism in fire retarded    butadiene–styrene block copolymer

多磷酸铵-氢氧化铝在阻燃丁二烯-苯乙烯嵌段共聚物中的对抗性

作者：Castrovinci, A., G. Camino, C. Drevelle, S. Duquesne, C. Magniez, et M. Vouters
发表： European Polymer Journal 41, no 9 (septembre 2005): 2023 2033. doi:10.1016/j.eurpolymj.2005.03.010

Abstract/摘要：

In this paper the effect of aluminum trihydroxide (Al(OH)3—ATH) on the surface protection from fire for a styrene butadiene rubber (SBR) provided by ammonium polyphosphate ([NH4PO3]n—APP) is studied.The combustion behaviour is studied by means of Cone Calorimetric tests: a maximum fire retardant effect is observed with 10–12 wt.% of APP. ATH, less effective as fire retardant, has been added at 60 wt.% to reach comparable results as measured by cone calorimetry for 12 wt.% APP.Replacement of ATH in the best performing SBR + 12 wt.% of APP shows an antagonistic effect with as little as 1 wt.% of ATH.The combustion behaviour is explained with the mechanism of interaction between SBR, APP and ATH, in which formation of aluminum phosphates negatively affects the surface protection provided by the ultraphosphate surface coating formed on heating APP in SBR.

Keywords/关键词

• Styrene butadiene rubber 丁苯橡胶;
• Flame retardancy 阻燃性;
• Surface protection 表面保护;
• In situ ceramization 原位瓷化;
• Ammonium polyphosphate 多磷酸铵;
• Aluminum trihydroxide 氢氧化铝

 

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