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主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
镁铝水滑石泡沫阻燃剂的制备及阻化特性研究
  • Title

    Preparation of Mg-Al hydrotalcite foam retardant and its inhibition characteristics study

  • 作者

    李晟立张雷林

  • Author

    LI Shengli;ZHANG Leilin

  • 单位

    安徽理工大学 安全科学与工程学院安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室

  • Organization
    School of Safety Science and Engineering, Anhui University of Science and Technology
    Key Laboratory of Safe and Effective Coal Mining Ministry of Education, Anhui University of Science and Technology
  • 摘要

    为防治煤自燃,采用表面活性剂、稳泡剂和镁铝水滑石(HT)按一定比例配制出稳定性高、阻燃效果好的镁铝水滑石泡沫,通过正交试验和Waring-Blender法确定了镁铝水滑石泡沫的最佳配方,通过程序升温装置和锥形量热实验测试其阻化特性。结果表明:当表面活性剂Silok8022质量分数为0.03%、AOS质量分数为0.1%、LAMC质量分数为0.075%,稳泡剂HEC质量分数为0.05%,阻燃剂HT质量分数为1%时,镁铝水滑石泡沫的性能最好;在低温阻化方面,HT泡沫的阻化率达到68.4%,200℃时添加HT泡沫的煤样CO体积分数较原煤降低了36.9%;在高温燃烧方面,HT泡沫处理的煤样热释放速率峰值从74.59 kW/m2下降至43.48 kW/m2,总热释放量从9.98 MJ/m2下降至7.15 MJ/m2,相比MgCl2和AFFF,HT泡沫对煤表现出优异的阻燃效果;添加HT泡沫的煤样脂肪烃和含氧官能团含量均显著降低,表明HT泡沫对煤自燃具有较强的抑制能力。

  • Abstract

    In order to prevent coal spontaneous combustion, Mg-Al hydrotalcite foam with high stability and good flame retardant effect was prepared by using surfactant, foam stabilizer and Mg-Al hydrotalcite(HT) in a certain proportion. The optimum formula of Mg-Al hydrotalcite foam was determined by orthogonal test and Waring-Blender method. The inhibition characteristics were tested by temperature programmed device and cone calorimeter test. The results show that when the mass fraction of surfactant Silok8022 is 0.03%, the mass fraction of AOS is 0.1%, the mass fraction of LAMC is 0.075%, the mass fraction of foam stabilizer HEC is 0.05%, the mass fraction of flame retardant HT is 1%, the performance of Mg-Al hydrotalcite foam is the best. In terms of low temperature inhibition, the inhibition rate of HT foam reached 68.4%, and the CO volume fraction of coal samples added with HT foam at 200 °C was 36.9% lower than that of raw coal. In terms of high temperature combustion, the peak heat release rate of coal samples treated with HT foam decreased from 74.59 kW/m2 to 43.48 kW/m2, and the total heat release decreased from 9.98 MJ/m2 to 7.15 MJ/m2. Compared with MgCl2 and AFFF, HT foam showed excellent flame retardant effect on coal. It was found that the content of aliphatic hydrocarbons and oxygen-containing functional groups in coal samples with HT foam was significantly reduced, indicating that HT foam had a strong inhibitory effect on coal spontaneous combustion.

  • 关键词

    煤自燃正交试验镁铝水滑石泡沫阻化特性官能团

  • KeyWords

    coal spontaneous combustion;orthogonal test;Mg-Al hydrotalcite foam;inhibition characteristics;functional groups

  • 基金项目(Foundation)
    国家自然科学基金资助项目(51874008)
  • DOI
  • 引用格式
    李晟立,张雷林. 镁铝水滑石泡沫阻燃剂的制备及阻化特性研究[J]. 煤矿安全,2024,55(4):79−87.
  • Citation
    LI Shengli, ZHANG Leilin. Preparation of Mg-Al hydrotalcite foam retardant and its inhibition characteristics study[J]. Safety in Coal Mines, 2024, 55(4): 79−87.
  • 相关文章
  • 图表
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    • 单一表面活性剂的表面张力

    图(11) / 表(5)

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