Fire performance of poly(dimethyl siloxane) composites evaluated by cone calorimetry
Fire performance of poly(dimethyl siloxane) composites evaluated by cone calorimetry
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DOI：
10.1016/j.compositesa.2007.09.009
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发表时间：
2008-01-01
影响因子：
8.7
通讯作者：
Shanks, Robert A.
中科院分区：
文献类型：
--
作者：
Genovese, Antonietta;Shanks, Robert A.
采用热重法和锥量热法研究了聚二甲基硅氧烷（PDMS）泡沫复合材料的阻燃性能，以确定阻燃对阻燃性能的影响。以FR型氢氧化镁和硼酸锌为原料，在缩合相和气相下制备了PDMS复合材料。水合阻燃剂会产生冷却基材的水。氧化镁保留在复合材料绝缘中，限制了可燃挥发物的扩散。PDMS的热稳定性随高岭土的加入而降低，随阻燃剂的加入而提高。复合材料的热释放率表现为两个峰，表明炭的形成和破裂，这是由于碎片/裂纹使入射热通量的表面积增加。(c) 2007 Elsevier Ltd.版权所有。
Flame retardant behaviour of polydimethylsiloxane (PDMS) foam composites has been investigated by thermogravimetry and cone calorimetry to determine the effect of FR on fire performance. PDMS composites were prepared with FR magnesium hydroxide and zinc borate acting in the condensed and gaseous phase. The hydrated fire retardants evolve water that cools the substrate. Magnesium oxide is retained in the composite insulating and limiting the diffusion of combustible volatiles. The thermal stability of PDMS decreased with kaolin, but increased with the addition of fire retardants. The heat release rate of the composites exhibited two peaks indicative of char formation and breakdown, attributed to fragmentation/cracks exposing increased surface area to the incident heat flux. (c) 2007 Elsevier Ltd. All rights reserved.