木材表面氢氧化铝薄膜的水热合成及其阻燃抑烟性能
Hydrothermal synthesis of aluminium hydroxide film on wood surfaces and its flame retardant performance
利用水热法在木材表面合成了Al(OH)3薄膜，旨在改善木材的阻燃性能。研究了水热温度、水热时间等工艺因素对Al(OH)3薄膜生长的影响，分析了处理前后木材表面元素含量的变化，观察了木材表面Al(OH)3薄膜的形貌和粒径，进行了燃烧性能氧指数法和锥形量热仪法测试。结果表明：木材表面生长的薄膜为无定形态的Al(OH)3，处理材宏视下与素材差异不大。当水热温度为100oC，生长的Al(OH)3薄膜由较规则的微纳米球形颗粒构成；水热温度为120oC时，球形颗粒尺寸趋近于一致，随着水热时间的延长，进一步生长出类似花状的薄片。氧指数由素材的24.7%升高至27.9%。采用锥形量热仪分析木材的阻燃性能，由结果可知，经水热条件100oC、8h 和120oC、6h的处理材相比素材，其热释放速率分别降低了51.75%、47.41%，总热释放量降低了66.71%、45.61%，总烟释放量降低了79.61%、67.96%，质量损失减少36.36%、45.45%，有效燃烧热也有所降低。因此，Al(OH)3薄膜能够提高木材的阻燃性能，其负载在木材表面可以提高木材使用的安全性。
Hydrothermal method was used to synthesize Al(OH)3 film on wood surface to improve its flame retardant property. The hydrothermal temperature and reaction time were controlled. The changes of element content, surface morphology of the treated wood were tested and analyzed. The flame retardant property of treated wood was also investigated according to the oxygen index method and CONE. The morphology of Al(OH)3 film was composed of regular micro/nano sized spheres. While the production of spherical particles increased and some flower-like sheets grew up as the hydrothermal temperature set at 120 oC. The oxygen index rose from 24.7% for the untreated wood to 27.9% for the treated wood. From the analysis of CONE, the HRR of the condition at 100oC for 8h and 120oC for 6h decrease 51.75% and 47.41% in comparison with the controll one; The THR and TSP dropped 66.71%, 45.61% and 79.61%, 67.96% respectively. The mass loss was also reduced for 36.36% and 45.45%. All above results demonstrated that the flame retardant property of wood could be improved by synthesizing Al(OH)3 film on the surface.
王娜娜、于海鹏、刘一星、刘永壮
非金属元素化学工业、非金属无机化合物化学工业材料科学
水热法l(OH)3阻燃性能木材
hydrothermalAl(OH)3flame retardant propertywood
王娜娜,于海鹏,刘一星,刘永壮.木材表面氢氧化铝薄膜的水热合成及其阻燃抑烟性能[EB/OL].(2016-05-16)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201605-403.点此复制
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