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首页> 外文期刊>The Journal of the Textile Institute. Part 3, Technologies for a New Century >The Effect of Functional Nanoclays in Enhancing the Fire Performance of Fibre-forming Polymers
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The Effect of Functional Nanoclays in Enhancing the Fire Performance of Fibre-forming Polymers

机译：功能性纳米粘土对增强成纤维聚合物防火性能的影响

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This paper reviews the present interest in the use of functionalised nanoclays as additives for improving tensile properties and fire performance in fibre-forming polymers. However, evidence over the last three years suggests that, when present by themselves, they will not be able to fulfil all the required features of an ideal flame-retardant, such as conferring ignition-resistance, self-extinguishability, and char-forming propensity. By using cast films as models for eventual fibre geometries, recent work in our own laboratories suggests that nanoclays may increase the effectiveness of more conventional normal flame-retardants (FRs) and thus enable lower quantities to be used, an especially important requirement in synthetic-fibre production and processing. In this paper, we also extend earlier work and report the effect of introducing two commercial nanoclays of known chemical structure into films of polyamide 6 and 6.6 in combination with selected phosphorus-containing flame-retardants. By using the limiting-oxygen index as a means of measuring increased flame-retardant properties, it is shown that the addition of low levels (2% w/w) of nanoclay does increase the over-all flame-retardant behaviour of films in the presence of defined concentrations (11-27% w/w) of flame-retardant, thus enabling lower concentrations of the latter to be used. As a means of understanding such synergistic activity and in order to be able to develop more effective combined nanoclay-FR systems, a simple model is proposed.
机译：本文综述了目前对使用功能化纳米粘土作为添加剂来改善成纤聚合物的拉伸性能和防火性能的兴趣。但是，最近三年的证据表明，如果单独使用它们，它们将无法满足理想阻燃剂的所有要求，例如赋予其耐燃性，自熄性和成炭倾向。 。通过使用流延膜作为最终纤维几何形状的模型，我们自己实验室中的最新工作表明，纳米粘土可以提高更常规的常规阻燃剂（FR）的效力，因此可以使用较少的量，这是合成纤维特别重要的要求。纤维生产加工。在本文中，我们还扩展了较早的工作，并报告了将两种已知化学结构的商业纳米粘土与所选的含磷阻燃剂一起引入聚酰胺6和6.6薄膜中的效果。通过使用极限氧指数作为衡量增加的阻燃性能的手段，结果表明，添加低含量（2％w / w）的纳米粘土确实会增加薄膜在阻燃剂中的总体阻燃性能。存在限定浓度（11-27％w / w）的阻燃剂，因此可以使用较低浓度的阻燃剂。作为理解这种协同活性的一种手段，并且为了能够开发出更有效的组合纳米粘土-FR系统，提出了一个简单的模型。

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