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新型无卤阻燃剂的研究进展 总被引:25,自引:1,他引:25
综述了无机金属化合物阻燃剂、磷系阻燃剂、硅系阻燃剂及氮系阻燃剂等几类新型的无卤阻燃剂的目前研究发展情况,简要介绍了其有关阻燃机理及将来的发展方向。 相似文献
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新世纪前10年全球阻燃剂发展预测 总被引:24,自引:0,他引:24
本文回顾了1970~1999年这30年间全球阻燃剂的发展历程,概述了卤系阻燃剂遇到的严峻挑战和一些新型的阻燃剂的兴起;预测了新世纪前10年全球阻燃剂的发展趋势,主要是卤系、磷系、氮系、无机阻燃剂及抑烟剂的应用前景。 相似文献
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The effects of ammonium salts of sulfaminic acids, containing aliphatic and arylaliphatic hydrocarbon chains, respectively, in a combination with inorganic fire retardants and fillers, on the properties of ethylene-propylene copolymer compositions (EPCC) for cable insulation were studied. The additive action of the organic fire retardants and antimony oxide in a weight ratio of 3:1 was proved. EPCC indicated a limited oxygen index (LOI) of 37–39% and a diminished smoke release and belonged to UL class zero. The thermal destruction of the system consisting of a copolymer blend and fire retardant, as well as the individual organic and inorganic fire retardants, was studied using dynamic thermal analyses (DTA, TG, DTG). The combination of fire retardants caused a decrease of both the heat release and weight loss over the EPCC surface. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 63: 581–588, 1997 相似文献
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对四溴双酚A、五溴二苯醚、六溴环十二烷等阻燃剂在聚丙烯、环氧树脂、酚醛树脂、PETP树脂、不饱和聚酯等材料中进行了试探性的应用,并对今后如何加快阻燃剂的发展提出了初步的看法。 相似文献
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Marcelo M. Hirschler 《火与材料》2015,39(3):232-258
This is part of a project considering whether flame retardants affect polymer heat release, a critical issue to assess whether adding flame retardants decreases fire hazard. The work investigated the following. (1) Fire properties affecting fire hazard, confirming that heat release rate is the key fire property most strongly influencing fire hazard. (2) Ways to assess heat release and whether full‐scale fire heat release rate can be predicted from small‐scale test results, confirming that cone calorimeter and Ohio State University data are adequate to predict full‐scale heat release. (3) Analysis of key 1988 NBS/NIST study comparing the fire hazard of flame retarded products versus non‐flame retarded products for the same application. This confirmed that the study demonstrated that flame retardants lower fire hazard and that the levels of additives in the flame retarded products used were not excessive. (4) Review of studies investigating effects of flame retardants on various polymeric systems. The overall conclusion is that flame retardants does indeed improve fire safety (when used appropriately) primarily because they decrease heat release. Part 2 of the project (separately) considers the key polymers that need to be potentially flame retarded and reviews recent studies on effects of flame retardants on heat released by such polymers. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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In this work, we co‐formulated an oil‐borne copper naphthenate/permethrin wood preservative system with synthetic polymer‐based fire‐retardant additives prior to the impregnation of Pinus radiata sapwood. We evaluated what effect, if any, the preservative had upon the fire performance properties of the fire retardants and whether the fire retardants impacted on the fungicidal and termiticidal efficacy of the preservative. The fire retardants included halogenated and phosphorus‐based systems. A mass loss calorimeter, in conjunction with a thermopile, was used to measure the time to ignition and the peak heat release rate (PHRR) from which the fire performance index (FPI) was determined. The preservative properties were evaluated using termite and soil‐block decay bioassays. In summary, we found that the rate of fire growth was reduced when the fire retardants were used in combination with the wood preservative. We also found that the PHRR was a better determinant of fire performance than the FPI. The performance of the wood preservative was enhanced against fungal decay and termite attack when used in combination with the fire retardants. The fire retardants also demonstrated some wood preservative properties of their own. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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从木材构造对化学阻燃浸渍处理工艺影响的角度,指出在木材化学阻燃浸渍处理过程中,影响阻燃剂在木材中渗透性的木材主要微观构造有浸提物、纹孔等,分析了木材中水分的存在状态和木材中水分的移动与木材化学阻燃浸渍处理工艺的关系。探讨了强化木材化学阻燃浸渍处理的方法。采用微波技术提高木材的渗透性,采用超声波技术强化阻燃剂的浸渍。实验表明是一条可行的技术路线。 相似文献
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阻燃剂在膨胀型防火涂料中的应用 总被引:17,自引:1,他引:16
根据阻燃剂的分类,阐述了各类阻燃剂的阻燃机理。评述了国内外几种阻燃性好的阻燃剂的应用。提出了膨胀型防火涂料中阻燃体系及阻燃剂的选用原则。 相似文献