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一锅法合成二硝基五亚甲基四胺工艺研究

Keywords: 二硝基五亚甲基四胺,二硝基脲,一锅法

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Abstract:

通过研究一锅法合成DPT工艺为DPT法制备HMX工艺改进提供依据.以尿素为起始原料,中间体不分离,经硝化、水解、Mannich缩合等反应得到DPT.考察硝酸用量、硝化时间、水解时间、甲醛用量和介质pH值等因素对DPT收率的影响,确立了较佳工艺.当发烟硝酸用量11.5mL,硝硫混酸体积比1.1,硝化60min,水解90min,体积分数37%~40%的甲醛溶液40.8mL加热至40℃反应40min,氨水中和溶液至pH=7.5,DPT产率65.2%.

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