聚硅酸硫酸铝对超轻质植物纤维基材料阻燃性能的影响  

Effects of polysilicate aluminum sulfate on fire resistance of ultra-low density materials

作　　者：蔡丽丽[1] 谢拥群[1] 庄清平 牛敏[1] 

机构地区：[1]福建农林大学材料工程学院

出　　处：《北京林业大学学报》2014年第5期136-141,共6页Journal of Beijing Forestry University

基　　金：中央级公益性科研院所基本科研业务费专项(CAFINT2011C07)

摘　　要：以有机混合物(废纸板纤维、聚乙烯醇和聚丙烯酰胺)和无机聚硅酸硫酸铝(PASS)为原料,通过有机--无机杂化,利用液体发泡方法制备出超轻植物纤维基材料。为了研究PASS对超轻植物纤维基材料阻燃性能的影响,首先对PASS的热稳定性、样品燃烧前后的微观形貌以及PASS在纤维管胞内外的厚度进行观察和测量,然后采用锥形量热仪对样品的阻燃性能进行测试。结果表明:PASS具有好的耐高温性能;与有机混合物杂化后具有很好的成膜性,能在纤维表面形成热稳定性涂层;管胞内、外层膜的平均厚度分别为0.182和0.667μm;PASS与氯化石蜡的协效作用显著降低了样品燃烧过程的热释放与质量损失。因此,这种有机--无机杂化可显著提高超轻植物纤维基材料的阻燃性能。The preparation of ultra-low density materials （ULDMs） was fabricated based on organic polymers （including waste fiber, polyvinyl alcohol and polyacrylamide ） and inorganic polymer polysilicate aluminum sulfate （PASS） using the method of oganic-inoganic hybrid and liquid frothing in pulp solution. To illustrate the effects of PASS on fire resistance of ULDMs, crack development of PASS , microstructure of ULDMs before and after combustion as well as the film thickness on fibres were investigated. Then the influence of PASS on the flame retardancy of ULDMs was investigated by cone calorimeter. The results showed high temperature resistance of PASS and presence of hybrid layer. The inner and outer average thickness was 0. 182 and 0. 667 μm, respectively. And there was a synergistic effect between PASS and CP-70 on the fire properties for low heat release and high charred residue. In conclusion, fire resistance of ULDMs was improved by oganic-inoganic hybrid with PASS.

关 键 词：聚硅酸硫酸铝 超轻质植物纤维基材料 阻燃性能 

分 类 号：S785[农业科学—林学]