Roles of graphite oxide, clay and POSS during the combustion of polyamide 6
Roles of graphite oxide, clay and POSS during the combustion of polyamide 6
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DOI：
10.1016/j.polymer.2009.01.050
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发表时间：
2009-03-06
期刊：
影响因子：
4.6
通讯作者：
Song, Huaihe
中科院分区：
文献类型：
--
作者：
Dasari, Aravind;Yu, Zhong-Zhen;Song, Huaihe
本研究采用两种不同的方法来制备环境友好的上级阻燃聚合物纳米复合材料。在第一种方法中，多面体低聚倍半硅氧烷（POSS）作为一种额外的填料在聚酰胺6/粘土纳米复合材料，以提高“物理”屏障的均匀性，因为POSS转化为玻璃状材料火灾后，提高硅酸盐层的耦合到彼此。在第二种方法中，将膨胀型体系聚酰胺6/氧化石墨（GO）的火灾响应与聚酰胺6/粘土体系进行比较。使用GO作为阻燃剂的目的是受益于其层状结构（“物理”阻隔机制）和膨胀/发泡效应（“化学”机制）。人们对不同填料在燃烧过程中的作用有了相当多的了解和物理知识，这将为新一代纳米复合材料的开发提供有用的指导。除了不同材料的阻燃性能存在明显的对比差异外，从阻燃性的角度来看，根据其性质，掺入各种填料既有优点也有缺点。(C)2009爱思唯尔有限公司保留所有权利。
Two contrasting approaches have been adopted in the current study to obtain environmental benign and superior flame retardant polymer nanocomposites. In the first approach, polyhedral oligomeric silsesquioxane (POSS) is incorporated as an additional filler in polyamide 6/clay nanocomposite to improve the homogeneity of the 'physical' barrier, since POSS transforms to a glassy material upon fire and enhances the coupling of silicate layers to each other. In the second approach, fire response of an intumescent system, polyamide 6/graphite oxide (GO), is compared to polyamide 6/clay systems. The intention of using GO as a flame retardant is to benefit from its layered structure ('physical' barrier mechanism) and intumescent/blowing effect ('chemical' mechanism). Considerable insight and physical knowledge on the roles of different fillers in the combustion process have been obtained, which would provide useful guidance for the development of a new generation of nanocomposites. Besides the obvious contrasting differences in the flame properties of different materials, the incorporation of various fillers, depending on their nature, has both advantages and disadvantages from the viewpoint of flame retardancy. (C) 2009 Elsevier Ltd. All rights reserved.