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Al(OH)3对聚丙烯腈粉火焰传播特性影响研究

郝峥 许开立 张毓媛 刘博

郝峥, 许开立, 张毓媛, 刘博. Al(OH)3对聚丙烯腈粉火焰传播特性影响研究[J]. 爆炸与冲击, 2022, 42(6): 065401. doi: 10.11883/bzycj-2021-0322
引用本文: 郝峥, 许开立, 张毓媛, 刘博. Al(OH)3对聚丙烯腈粉火焰传播特性影响研究[J]. 爆炸与冲击, 2022, 42(6): 065401. doi: 10.11883/bzycj-2021-0322
HAO Zheng, XU Kaili, ZHANG Yuyuan, LIU Bo. Study on the effect of Al(OH)3 on the flame propagation characteristics of polyacrylonitrile powder[J]. Explosion And Shock Waves, 2022, 42(6): 065401. doi: 10.11883/bzycj-2021-0322
Citation: HAO Zheng, XU Kaili, ZHANG Yuyuan, LIU Bo. Study on the effect of Al(OH)3 on the flame propagation characteristics of polyacrylonitrile powder[J]. Explosion And Shock Waves, 2022, 42(6): 065401. doi: 10.11883/bzycj-2021-0322

Al(OH)3对聚丙烯腈粉火焰传播特性影响研究

doi: 10.11883/bzycj-2021-0322
基金项目: 国家自然科学基金(52074066)
详细信息
    作者简介:

    郝 峥(1997- ),男,硕士研究生,18240138430@163.com

    通讯作者:

    刘 博(1991- ),男,博士,liub@mail.neu.edu.cn

  • 中图分类号: O389; X932

Study on the effect of Al(OH)3 on the flame propagation characteristics of polyacrylonitrile powder

  • 摘要: 为研究Al(OH)3粉体抑爆剂对聚丙烯腈(polyacrylonitrile, PAN)粉尘爆炸的抑制作用,利用透明管道爆炸传播测试系统,研究不同含量的Al(OH)3对PAN粉尘爆炸火焰传播形态、温度等参数的影响,并采用扫描电镜、热重分析仪、傅里叶红外光谱仪研究Al(OH)3抑制PAN粉尘爆炸的微观特征,总结出Al(OH)3对PAN粉尘爆炸的抑制机理。测试结果表明,随着Al(OH)3质量分数的增加,PAN粉尘爆燃的最大火焰传播距离和传播速度逐渐减小。同时压力监控及温度监控结果显示,随着Al(OH)3质量分数的增加,PAN粉尘的最大爆炸压力及最大温度均逐渐减小,由此验证了Al(OH)3对PAN粉尘爆炸的抑制作用,且60%质量比的Al(OH)3的抑制效果最好。通过对PAN粉尘爆炸固态产物表征及热分析的研究,从物理和化学两个方面分析了Al(OH)3对PAN粉尘火焰的抑制机理,物理抑制包括包覆、吸热降温、气体惰化3种方式,化学抑制主要通过消耗维持燃烧爆炸连锁反应的关键自由基•O和•OH减少了自由基•H、•OH与•O之间的放热反应。
  • 图  1  PAN粉尘粒径分布

    Figure  1.  Particle size distribution of PAN powder

    图  2  Al(OH)3粒径分布

    Figure  2.  Particle size distribution of Al(OH)3

    图  3  透明管道爆炸传播系统

    Figure  3.  Transparent pipeline explosion propagation test system

    图  4  透明管道爆炸传播系统

    Figure  4.  Transparent pipeline explosion propagation test system

    图  5  透明管道爆炸传播系统及传感器布置

    Figure  5.  Transparent pipeline explosion propagation system and arrangement of the sensors

    图  6  PAN粉尘喷粉

    Figure  6.  PAN powder spraying

    图  7  Al(OH)3与PAN粉混合物测试样品的火焰传播规律

    Figure  7.  Flame propagation law of the Al(OH)3 and PAN powder mixtures

    图  8  混合物爆炸压力离散图

    Figure  8.  Maximum explosion pressure and maximum flame speed distributions of the mixture explosions

    图  9  混合物爆炸温度监测结果

    Figure  9.  The detected explosion temperature of the mixtures

    图  10  爆炸产物SEM图

    Figure  10.  SEM images of the explosion products

    图  11  Al(OH)3对PAN粉抑爆的FTIR分析

    Figure  11.  FTIR analysis of the suppression effect of Al(OH)3 on PAN powder explosion

    图  12  热重曲线图

    Figure  12.  Thermogravimetric curves

    表  1  混合粉尘物质比例

    Table  1.   Material proportions of the mixed powder

    Al(OH)3质量比/%PAN质量/gAl(OH)3质量/g
    060
    2061.2
    4062.4
    6063.6
    7064.2
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出版历程
  • 收稿日期:  2021-07-30
  • 修回日期:  2021-11-15
  • 网络出版日期:  2022-06-02
  • 刊出日期:  2022-06-24

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