共查询到19条相似文献,搜索用时 125 毫秒
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聚氨酯泡沫阻燃剂浅谈 总被引:16,自引:3,他引:13
介绍了在聚氨酯泡沫塑料中常用的阻燃剂,包括反应型阻燃剂和添加型阻燃剂。着重对市场上部分卤代磷酸酯阻燃剂的类型进行了介绍。简要介绍了阻燃剂的阻燃机理、聚氨酯泡沫塑料用阻燃剂的研究开发,对我国聚氨酯用阻燃剂的发展提出建议。 相似文献
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阻燃聚氨酯泡沫塑料(PUF) 总被引:4,自引:0,他引:4
全面汇集和介绍可用于阻燃PUF的27种反应型及添加型阻燃剂的性能及优缺点,讨论了以新型卤代二磷酸酯阻燃剂阻燃的软质聚氨酯泡沫塑料的配方及阻燃性能和机械性能。 相似文献
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刘国胜;冯捷;郝建薇;杜建新 《中国塑料》2011,25(11):5-9
综述了添加型阻燃剂阻燃硬质聚氨酯泡沫塑料燃烧产烟行为及毒性产物抑制机理,着重介绍了膨胀石墨、层状纳米填料、金属氧化物提高硬质聚氨酯泡沫塑料阻燃效果、降低烟毒释放方面的研究进展。 相似文献
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一、阻燃机理有机磷酸酯类化合物,尤其是有机卤代磷酸酯,是聚氨酯泡沫塑料所用的重要的添加型阻燃剂。该类阻燃剂在聚氨酯泡沫塑料中的阻燃作用,有其独特之处,可以从阻燃剂的阻燃机理中看出,阻燃剂在泡沫塑料燃烧时,受热分解产生卤化氢,诱捕燃烧反应中的氢氧自由基使其生成水: 相似文献
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分别采用三(氯异丙基)磷酸酯(TCPP)、膨胀石墨(EG)和阻燃聚合物聚醚多元醇(POP)三种阻燃剂制备聚氨酯自结皮泡沫(ISF)塑料。探讨了TCPP,EG和POP对聚氨酯ISF塑料的力学性能和阻燃性能的影响。结果表明:以POP为阻燃剂制备的聚氨酯ISF塑料,力学性能较好,工艺稳定性及综合性能优于其他两种阻燃剂制备的聚氨酯ISF塑料。当POP与聚醚EP-330N的质量比为70∶30时,制品的拉伸强度为17MPa,伸长率为125%,压陷硬度为76.5 shao A,氧指数为25%。因此,POP可广泛应用于聚氨酯ISF塑料。 相似文献
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软质聚氨酯泡沫(FPUF)是聚氨酯材料的主要产品之一,由于其较低的密度和热传导率而易燃,在燃烧过程中会放出大量烟雾和有毒气体,对FPUF进行阻燃处理尤为重要。卤系阻燃剂由于存在潜在的毒性和环境问题而受到限制,因此FPUF的无卤阻燃技术是今后主要的研究方向。本文综述了近年有关软质聚氨酯泡沫无卤阻燃技术的研究进展,包括添加型无卤阻燃剂法、反应型无卤阻燃剂法、层层组装涂层法。指出开发高相对分子质量、含多种阻燃元素的有机添加型阻燃剂和膨胀型阻燃剂以及复配型阻燃剂,解决层层组装涂层法的组装慢等问题将是FPUF无卤阻燃技术的发展趋势。 相似文献
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Rigid halogen‐free and flame‐retarding polyurethane foams are prepared with aluminum hydroxide, brucite, and DMMP. The effects of the hydroxides and DMMP on the foaming process and flame retarding properties of the foams are investigated by thermo gravimetric analysis, limiting oxygen index, and X‐ray powder diffraction. The thermal stability of the rigid polyurethane foams is close to that of the hydroxide fillers, with aluminum hydroxide providing better flammability performance than brucite. The hydroxide fillers and DMMP play a synergistic role in the rigid polyurethane foams and the limiting oxygen indices are up to 28.4% and 32.4%, respectively. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 相似文献
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Hristo Sivriev Georgij Borissov Leszek Zabski Wladyslaw Walczyk Zbigniew Jedlinski 《应用聚合物科学杂志》1982,27(11):4137-4147
A phosphorus- and nitrogen-containing polyl is prepared by condensing tetrakis(hydroxymethyl)phosphonium chloride with diethanol amine in aqueous medium. The newly synthesized polyol-bis(hydroxymethyl)-N, N-bis(2-hydroxyethyl)aminomethylphosphine oxide (AMPO) is used in the preparation of rigid polyurethane foams with a various phosphorus content. With the view to comparing their properties, polyurethane foams are also prepared on the basis of the commercially available flame retardant diethyl-N, N-bis(2-hydroxyethyl)aminomethylphosphonate (Fyrol 6). The flammability, thermal stability, and thermoechanical properties of the polyurethane foams obtained are studied. A certain difference in the behavior of the two modified polyurethane foams is observed. The polyurethane foams with AMPO exhibit a slight increase in the resistance to combustion (oxygen index) and a noticeable improvement in the thermal and mechanical properties. These differences probably arise as a result of structural and functional differences between the two types of phosphorus-containing flame retardants. 相似文献