微胶囊化硝酸铵的表面性质研究

Study on Surface Properties of Coated Ammonium Nitrate

研究了表面活性剂、偶联剂和高分子化合物包覆硝酸铵的表面特性。采用喷雾干燥技术制备样品,用扫描电子显微镜、接触角测定和吸湿性测定表征表面结构和性质,结果表明表面活性剂能够显著减小AN颗粒表面极性,降低其吸湿性。

To decrease surface polarity and hygroscopy of ammonium nitrate (AN),a surfactant,a coupling agent and a polymer were used to coat AN particles. Spraying-drying technique was used in coating technology. The surface polarity,surface structure and hygroscopic rate of the coated AN particles were studied by surface energy measurement,scanning electron microscopy and moisture experiment. It was obtained that the coated AN particles by surfactant,coupling agent and polymer showed low surface polarity and hygroscopic rate.