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首页> 外文期刊>Polymers for advanced technologies >Layered silicate polymer nanocomposites: new approach or illusion for fire retardancy? Investigations of the potentials and the tasks using a model system
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Layered silicate polymer nanocomposites: new approach or illusion for fire retardancy? Investigations of the potentials and the tasks using a model system

机译:层状硅酸盐聚合物纳米复合材料:阻燃性的新方法还是幻想?使用模型系统调查潜力和任务

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摘要

Polymeric nanocomposites are discussed as one of the most promising advanced materials whose nanoscale effects can be exploited for industry. Layered silicate polypropylene-graft-maleic anhydride nanocomposites are investigated as a model to clarify the potential of such materials in terms of fire retardancy. The nanostructure is characterized using transmission electron microscopy (TEM) and shear viscosity. The fire behavior is characterized using different external heat fluxes in cone calorimeter, limiting oxygen index and UL 94 classification. A comprehensive fire behavior characterization is presented which enables an assessment of the materials' potential with respect to different fire scenarios and fire tests. The influence of morphology and the active mechanisms are discussed, such as barrier formation and changed melt viscosity. To our knowledge, it is the first attempt to illuminate the concept's strengths, such as the reduction of flame spread, and weaknesses, such as the lack of influence on ignitability, in a clear, comprehensive and detailed manner.
机译:聚合物纳米复合材料被认为是最有前途的先进材料之一,其纳米尺度效应可用于工业。研究了层状硅酸盐聚丙烯-接枝-马来酸酐纳米复合材料作为模型,以阐明这种材料在阻燃性方面的潜力。使用透射电子显微镜(TEM)和剪切粘度表征纳米结构。使用锥形量热仪中的不同外部热通量,极限氧指数和UL 94分类来表征燃烧行为。提出了全面的燃烧行为特征,可以评估材料在不同火灾情况和火灾测试方面的潜力。讨论了形态学和活性机理的影响,例如形成势垒和改变熔体粘度。据我们所知,这是首次尝试以清晰,全面和详细的方式阐明该概念的优点,例如减少火焰蔓延和缺点,例如对可燃性的影响。

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