共查询到19条相似文献,搜索用时 171 毫秒
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国内外阻燃刨花板的研究现状 总被引:3,自引:0,他引:3
综合论述了国内外刨花板的燃烧理论、阻燃剂的阻燃机理及刨花板用阻燃剂、阻燃处理工艺及阻燃效果测试方法等方面的研究成果,介绍了阻燃刨花板的发展及国内存在的问题和发展对策。 相似文献
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木质纤维板阻燃处理的初步探讨 总被引:3,自引:0,他引:3
为开发新型实用的阻燃木质纤维板的阻燃剂和阻燃处理技术,进行了纤维板生产工艺中加入阻燃剂试验,结果表明,加入阻燃剂VDFP和采用浸渍法处理的阻燃效果较好。 相似文献
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应用BL-环保阻燃剂开发B1级阻燃环保胶合板 总被引:8,自引:0,他引:8
简要介绍了胶合板阻燃的重要性以及国际上阻燃剂发展趋势.分析了使用BL-环保阻燃剂压制环保阻燃胶合板过程中,热压温度、热压时间和单板浸渍时间对胶合板阻燃环保性能的影响,并检测了甲醛释放量和浸渍剥离性能.研究表明:使用BL-环保阻燃剂生产环保阻燃胶合板是切实可行的,并提出了最佳工艺条件. 相似文献
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木材阻燃剂FRW的阻燃机理 总被引:10,自引:2,他引:10
在综合分析热分析法、锥形量热仪法和FTIR法获得的FRW阻燃机理研究结果并吸收木材阻燃机理研究现有成果的基础上,推导进而提出了木材阻燃剂FRW的阻燃机理。其主要内容是:1)FRW阻燃木材受热时,阻燃剂FRW分解产生不燃性气体和不挥发的酸性熔融物质,具有降低体系温度和氧气浓度及屏蔽热辐射的作用,降低了木材的热解速度;2)FRW的组分硼酸和GUP的酸性分解产物催化木材脱水、降解,以及木材热解产物的缩合、聚合、芳构化等反应,能改变木材的热解途径并使其向着有利于炭化的方向变化,FRW显著的催化成炭作用,使阻燃木材的燃烧放热量大大降低,这是FRW阻燃机理的主要方面;3)硼酸与GUP起阻燃作用的温度和方式不同,并且有相互补充的作用,因而表现出阻燃协同效应。 相似文献
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选用新型木材阻燃剂SLB对马尾松和南洋楹两种木材进行了阻燃处理,并用氧指数法和木垛法对处理后木材的阻燃性能进行了测试。结果表明:用SLB阻燃剂处理木材,载药量达到40 kg/m^3以上时,阻燃性能达到相关标准的要求,阻燃效果随着载药量的增大而增强。在载药量相近时,南洋楹木材比马尾松木材的阻燃效果显著。 相似文献
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Guangjie Zhao Wensheng Luo T. Furuno Qiang Ren Erni Ma 《Frontiers of Forestry in China》2007,2(2):231-236
In order to investigate the pyrolytic characteristics of the burning residue of fire-retardant wood, a multifunctional fire-resistance
test oven aimed at simulating the course of a fire was used to burn fire-retardant wood and untreated wood. Samples at different
distances from the combustion surface were obtained and a thermogravimetric analysis (TG) was applied to test the prrolytic
process of the burning residue in an atmosphere of nitrogen. The results showed that: 1) there was little difference between
fire-retardant wood and its residue in the initial temperature of thermal degradation. The initial temperature of thermal
degradation of the combustion layer in untreated wood was higher than that in the no burning wood sample; 2) the temperature
of the flame retardant in fire-retardant wood was 200°C in the differential thermogravimetry (DTG). The peak belonging to
the flame retardant tended to dissipate during the time of burning; 3) for the burning residue of fire-retardant wood, the
peak belonging to hemicellulose near 230°C in the DTG disappeared and there was a gentle shoulder from 210 to 240°C; 4) the
temperature of the main peaks of the fire-retardant wood and its burning residue in DTG was 100°C lower than that of the untreated
wood and its burning residue. The rate of weight loss also decreased sharply; 5) the residual weight of fire-retardant wood
at 600°C clearly increased compared with that of untreated wood. Residual weight of the burning residue increased markedly
as the heating temperature increased when burning; 6) there was a considerable difference with respect to the thermal degradation
temperature of the no burning sample and the burning residue between fire-retardant wood and untreated wood.
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Translated from Journal of Beijing Forestry University, 2006, 28(3): 133–138 [译自: 北京林业大学学报] 相似文献
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制板因素对FRW阻燃中密度纤维板性能的影响 总被引:1,自引:0,他引:1
制板因素对阻燃中密度纤维板(MDF)各项性能的影响至关重要.根据前期试验,选取阻燃剂施加量和热压温度两个主要的制板影响因素,分别探讨了该因素对FRW阻燃中密度纤维板物理力学性能和阻燃性能的影响.研究结果表明:阻燃剂施加量对FRW阻燃中密度纤维板的物理力学性能影响较小,并且所有物理力学性能指标均达到并超过了中密度纤维板国家标准GB/T11718-1999的要求;而阻燃剂施加量对FRW阻燃中密度纤维板的阻燃性能影响较大,氧指数与阻燃剂施加量之间具有显著的相关性.热压温度除对FRW阻燃中密度纤维板的几个指标略有影响外,对其他的物理力学性能指标和氧指数几乎无影响. 相似文献
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李晓东 《林业机械与木工设备》2005,33(12):7-11,14
本研究以ZR-M-301型木材阻燃剂为浸渍药液,樟子松和水曲柳为木材试样,选择常压浸渍、压力浸渍、微波处理后常压浸渍、超声波加压浸渍和微波处理后超声波加压浸渍五种木材阻燃处理方法,经过试验,探索在生产阻燃木材的浸渍方法中引入微波和超声波技术的可行性,找到效果好的木材阻燃处理方法.本研究的创新点是将微波处理与超声波辐射技术应用于木材阻燃处理中,利用微波加热处理改善木材构造的渗透性能,利用超声波的空化作用强化阻燃剂浸入性能,并提出了新的技术路线. 相似文献
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Fengqiang Wang Zhijun Zhang Qingwen Wang Jiayin Tang 《Frontiers of Forestry in China》2008,3(4):487-492
An intumescent waterborne amino-resin fire-retardant coating for wood (C) was synthesized and its fire-retardant and smoke-suppressant
properties were investigated. The main film-builder of C was urea-formaldehyde resin blended with polyvinyl acetate resin.
The intumescent fire-retardant system of C consisted of guanylurea phosphate (GUP), ammonium polyphosphate (APP), pentaerythritol
(PER) and melamine (MEL). Specimens of plywood painted, respectively, with a commercial intumescent fire-retardant coating
(A), a synthesized coating (C), and the main film-builder of coating C (B), as well as an unpainted plywood (S-JHB), were
analyzed by cone calorimetry (CONE). The results show a marked decrease in the heat release rate (HRR) and the total heat
release (THR), an increased mass of residual char (Mass), a marked postponement in time to ignition (TTI) and a reduced carbon
monoxide production rate (P
CO). The smoke production rate (SPR) and total smoke production (TSP) of the plywood painted with coating C were observed with
the CONE test. The overall fire-retardant and smoke-suppressant performance of the synthesized coating C was much better than
that of the commercial coating A. The thermo-gravimetric analysis (TGA) results of coating C and its film-builder B indicated
that the thermal degradation process of B was slowed down by the addition of the intumescent fire-retardant system; the increase
in the amount of charring of coating C was considerable.
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Translated from Scientia Silvae Sinicae, 2007, 43(12): 117–121 [译自: 林业科学] 相似文献