聚磷酸铵/蒙脱土纳米复合物煤自燃阻化性能  

Coal spontaneous combustion inhibition erformance of ammonium polyphosphate/montmorillonite nanocomposite

作　　者：许宇龙 许德鑫 张兰君 何文静 侯倩倩 于召伟 XU Yulong;XU Dexin;ZHANG Lanjun;HE Wenjing;HOU Qianqian;YU Zhaowei(School of Environment and Chemical Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Zhonglan Lianhai Design and Research Institute Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]江苏海洋大学环境与化学工程学院,江苏连云港222005 [2]中蓝连海设计研究院有限公司,江苏连云港222000

出　　处：《江苏海洋大学学报(自然科学版)》2025年第1期89-96,共8页Journal of Jiangsu Ocean University:Natural Science Edition

基　　金：国家自然科学基金资助项目(52004104,22208132);江苏高校“青蓝工程”资助项目;连云港市521工程项目(LYG06521202323);江苏省研究生科研与实践创新计划项目(KYCX2023-73)。

摘　　要：煤炭自燃严重威胁我国煤炭资源安全开采和有效利用,阻化剂作为煤自燃防治最有效的方法,一直是煤自燃防治领域研究的热点。随着纳米技术的发展,聚合物/纳米复合物阻燃材料开始大量涌现,APP/MMT(聚磷酸铵/蒙脱土)纳米复合物因具有极其优良的阻燃特性,在材料阻燃领域早已被广泛研究和应用,然而该类材料在煤自燃领域的应用尚未有报道。为此,采用原位聚合方法制备了APP/MMT纳米复合物煤自燃阻化剂并利用X射线衍射仪(XRD)和扫描电镜(SEM)对制备出的阻化剂进行分析。结果显示制备的复合物均为Ⅰ型APP/MMT复合物,且MMT含量会影响复合物的结构。采用TG-DSC热分析实验、低温氧化实验、FTIR红外光谱测试及EPR自由基测试对比研究该种阻化剂的煤自燃阻化性能。结果表明该阻化剂能显著降低煤氧化过程中的放热量,减少CO生成浓度,并起到抑制自由基作用,当阻化剂中MMT质量分数为3%时其煤自燃阻化效果最佳,其阻化率高达77%。研究表明该种APP/MMT纳米复合物具有良好地防治煤自燃效果,为煤自燃阻化剂研究提供新的思路和方法。Coal spontaneous combustion poses a severe threat to the safe mining and effective utilization of coal resources in China.Inhibitors,as the most effective method for the prevention and control of coal spontaneous combustion,have always been a hot topic of research in this feld.With the development of nanotechnology,polymer/nanocomposite flame retardant materials have begun to emerge in large quantities.The APP/MMT(ammonium polyphosphate/montmorillonite)nanocomposite,known for its excellent flame-retardant properties,has been widely studied and applied in the field of material flame retardation.However,there have been no reports on the application of such materials in the field of coal spontaneous combustion.This study utilized the in-situ polymerization method to fabricate APP/MMT nanocomposite coal self-ignition retardants.The inhibitors produced were examined through X-ray diffractometer(XRD)and scanning electron microscope(SEM)analysis.The findings indicated that the fabricated composites were categorized as type I APP/MMT composites,with the MMT content playing a significant role in the composite structure.Subsequently,this paper compared and studied the coal spontaneous combustion inhibiting performance of this inhibitor through TG-DSC thermal analysis experiments,low-temperature oxidation experiments,FTIR infrared spectroscopy tests,and EPR free radical tests.The results indicate that the inhibitor can significantly reduce the heat release during coal oxidation,decrease the concentration of CO generation,and play a role in inhibiting free radicals.The best coal spontaneous combustion inhibiting effect is achieved when the MMT content in the inhibitor is 3%,with an inhibition rate of up to 77%.This study shows that the APP/MMT nanocomposite has good effects in preventing and controlling coal spontaneous combustion,providing new ideas and methods for the research of coal spontaneous combustion inhibitors.

关 键 词：煤自燃 聚磷酸铵 蒙脱土 阻化剂 自由基反应 

分 类 号：TD752[矿业工程—矿井通风与安全]