【作者】 陈芝； 王娜； 张均； 姜志国；

【Author】 CHEN Zhi;WANG Na;ZHANG Jun;JIANG Zhiguo;College of Materials Science and Engineering,Beijing University of Chemical Technology;

【机构】 北京化工大学材料科学与工程学院；

【摘要】 聚氨酯作为尿素包衣材料可形成较致密的膜,具有优良的缓/控释性能,单一的聚氨酯包衣成本昂贵,功能有限,对聚氨酯进行改性,降低成本的同时能够提高其缓/控释性能。简要概述了包衣肥料缓/控释机理、合成工艺,以及评价方法,重点分析了近年来国内外聚氨酯包衣尿素研究现状与进展。更多还原

【Abstract】 As the coating material for urea,the polyurethane can form a compact film and possesses excellent slow/controlled release performance.The single polyurethane coating is expensive and has limited functions.The modification of polyurethane can reduce the cost and at the same time can improve its slow/controlled release performance.The slow/controlled release mechanisms,synthetic processes and evaluation methods of the coated fertilizers are briefly summarized.The research status and progress of the polyurethane coated urea at home and abroad in recent years are emphatically investigated.更多还原