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首页> 外文期刊>Journal of Applied Polymer Science >Properties of a novel inherently flame-retardant rigid polyurethane foam composite bearing imide and oxazolidinone
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Properties of a novel inherently flame-retardant rigid polyurethane foam composite bearing imide and oxazolidinone

机译：一种新型新型阻燃刚性聚氨酯泡沫复合材料轴承酰亚胺和恶唑烷酮的性质

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摘要

A novel inherently flame-retardant rigid polyurethane (PU) foam with imide and oxazolidinone was prepared by using 3,3 ',4,4 '-biphenyltetracarboxylic dianhydride (PTDA) and 9,10-dihydro-9-oxa-(10-glycidoxypropylene)-10-phosphap-henanthrene-10-oxide (e-DOPO) as reactive flame retardants. The physical and mechanical properties of the prepared PU foams were investigated. The compressive strength was improved to 0.22 MPa, the thermal conductivity decreased, and the density hardly changed. Thermogravimetric (TG) analysis and TG analysis coupled with Fourier transform infrared spectroscopy indicated that the PTDA and e-DOPO showed a small improvement in thermal properties. The fire behaviors were evaluated based on the limited oxygen index (LOI), cone-calorimetry experiment, and smoke-density test. The LOI of the PU foam with PTDA and e-DOPO reached 22.4%. The peak of heat release rate and total heat release decreased to 227.50 kW m(-2) and 11.27 MJ m(-2) from 281.28 kW m(-2) and 14.05 MJ m(-2), respectively. The morphologies of the PU foam and residues after the cone-calorimetry test were characterized by scanning electron microscopy. X-ray photoelectron spectroscopy analysis indicated that PTDA and e-DOPO lead to an increase in graphite in the residue and the formation of a better barrier to prevent burning by the condensed-phase mechanism. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47943.
机译：通过使用3,3'，4,4'-萘基甲基二酐（PTDA）和9,10-二氢-9-氧气（10-丙酸氧基丙烯）制备具有酰亚胺和恶唑烷酮的本身具有酰亚胺和恶唑烷酮的新型阻燃刚性聚氨酯（PU）泡沫。（10-丙酸氧基丙烯）-10-磷酸庚烯-10-氧化物（E-DOPO）作为反应性阻燃剂。研究了制备的PU泡沫的物理和机械性能。抗压强度得到改善至0.22MPa，导热率降低，密度几乎不变。热重量（TG）分析和TG分析与傅里叶变换红外光谱相耦合，表明PTDA和E-DOPO显示出热性能的少量改善。基于有限的氧指数（LOI），锥形热量试验和烟雾密度试验来评估消防行为。 PTDA和E-DOPO的PU泡沫的LOI达到22.4％。热释放速率的峰值和总热释放的峰值分别从281.28 kW m（-2）和14.05 mJ m（-2）降至227.50kW m（-2）和11.27mJ m（-2）。通过扫描电子显微镜表征在锥形量热试验后的PU泡沫和残基的形态。 X射线光电子能谱分析表明，PTDA和E-DOPO导致残余物中的石墨增加，并形成更好的屏障，以防止通过冷凝相机制燃烧。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47943。

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