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含能材料  2014 

高氯酸铵疏水表面的制备及表征

DOI: 10.3969/j.issn.1006-9941.2014.04.011

Keywords: 物理化学,高氯酸铵,吸湿性,表面改性,疏水性,聚苯乙烯,氟硅烷

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Abstract:

为降低高氯酸铵(AP)的吸湿性,采用聚苯乙烯(PS)和十二氟庚基丙基三甲氧基硅烷(氟硅烷,FAS:C14F12H20SiO3)对其表面包覆。将高氯酸铵(AP)和聚苯乙烯(PS)复合,再用FAS处理得到AP/PS/FAS粒子和复合薄膜。通过吸湿率和接触角测试研究了其吸湿性。用扫描电镜-能谱(SEM-EDS)分析研究其微观形貌结构。结果表明,AP/PS/FAS复合薄膜的吸湿率最小,且基本不吸水。未处理AP的接触角为0°,AP/PS/FAS复合薄膜与水的接触角为(113±2)°。AP/PS/FAS复合薄膜表面具有类似荷叶表面的微观形貌结构,其表面含有氟硅烷分子,有利于AP疏水表面的形成。

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