Properties and characterization of coating materials for slow-release fertilizers by adding distillers' grains to modified poly(vinyl alcohol)

被引：0

作者：

Chu, Lina ^{[1
]}

Ao, Xianquan ^{[1
]}

Chen, Qianlin ^{[1
]}

Guo, Yu ^{[1
]}

Cao, Yang ^{[1
]}

机构：

[1] College of Chemistry and Chemical Engineering, Guizhou University, Guiyang,Guizhou,550025, China

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2020年 / 39卷 / 02期

关键词：

Blending - Composite coatings - Composite films - Degradation - Ethylene - Hydrogen bonds - Nitrogen fertilizers - Polyvinyl alcohols - Thermodynamic stability - Urea;

D O I：

10.16085/j.issn.1000-6613.2019-0807

中图分类号：

学科分类号：

摘要：

Composite coating materials were prepared by solution blending with poly(vinyl alcohol )(PVA) as raw material, poly(ethylene pyriloxane)(PVP) as modifier and distillers' grains (JZ) as additive. The coated slow-release fertilizers were prepared by coating nitrogen fertilizer. The effects of JZ addition on the properties of composite coating materials and the slow-release properties of coated fertilizers were studied. Experimental results showed that JZ combined with each component hydrogen-bonded noncovalent interactions and had good compatibility. The addition of JZ significantly enhanced thermal stability of composite coating materials. The degradation rate of 120d PUPZ5 composite coating material was 20.11% higher than that without JZ. With the addition of JZ, the mechanical properties of the composite coating materials increased at first but decreased finally. When the mass ratio of JZ and PVA is 15:100, the mechanical properties of the composite coating materials was 20.75MPa being 528.79% higher than that of composite coating materials without JZ. Moreover, the slow-release fertilizers had good slow release effect, and the release of urea in the slow-release fertilizers could be controlled by adjusting the content of JZ in the composite coating materials. © 2020, Chemical Industry Press. All right reserved.

引用

页码：627 / 634