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硝酸铵的表面改性研究

Explosive Materials(2011)

Cited 24|Views7
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Abstract
针对硝酸铵常温下极易吸湿结块问题,通过液相分离包覆技术对硝酸铵进行表面改性研究,分别选用聚醋酸乙烯酯(PVAC)、聚丙烯酰胺(PAM)、聚乙二醇(PEG)作为包覆材料,利用扫描电子显微镜(SEM)、差示扫描量热仪(DSC)对改性的硝酸铵进行表征。试验结果表明:利用PVAC、PAM包覆后的改性效果较好,硝酸铵外表呈球状,流散性较好,改性后的硝酸铵24 h的吸湿率可分别下降32.8%、24.1%,PEG在-0.085MPa,50℃改性的硝酸铵吸湿性下降了22.4%。
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Key words
moisture absorption,surface modification,SEM,DSC,liquid phase separation,ammonium nitrate
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