聚氨酯/氧化锌复合控释材料对包膜尿素控释性能的影响

Effect of polyurethane /ZnO composites on nutrient release properties of coated urea

采用折光率法测定包膜控释尿素在水中养分释放特性,以普通聚氨酯包膜尿素为对照,通过研究聚氨酯/氧化锌复合材料包膜尿素的控释性能,探究聚氨酯/氧化锌复合控释材料应用于控释肥料的效果及其可行性。结果表明:聚氨酯/氧化锌复合材料包膜尿素控释性能优于普通聚氨酯包膜尿素,且以氧化锌质量分数为5%复合材料包膜尿素控释性能最佳,适合于作为控释肥料的包膜材料。

The refractive index method is applied to measure the nutrient release traits of polyurethane/ZnO composites coated controlled-release urea.To explore the controlled release effect and the feasibility,the controlled release properties of polyurethane/ZnO composites coated urea is investigated.The result shows that the controlled release properties of polyurethane/ZnO composites coated urea are more excellent than the ordinary polyurethane coated urea.When the ZnO content in composite is 5％,the controlled release property of polyurethane/ZnO composites coated urea is the best,which is suitable to be used as coated material for controlled release fertilizer.