Preparation and characterization of polyurethane based on dimer acid for environment-friendly controlled release fertilizers

被引：14
|
作者：
Zhang, Xiao [1 ]
Jiang, Yanghui [1 ]
Jia, Cong [1 ]
Lu, Panfang [1 ]
Chen, Hongkun [2 ]
机构：
[1] Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Shandong, Peoples R China
[2] Kingenta Ecol Engn Grp Co Ltd, Natl Engn Technol Res Ctr SCRF, Linyi 276700, Shandong, Peoples R China
来源：
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS | 2019年 / 58卷 / 14期
基金：
中国博士后科学基金;
关键词：
Dimer acid; bio-based polyurethane; Controlled release fertilizers; BIOBASED THERMOPLASTIC POLYURETHANES; COATING MATERIAL; VEGETABLE-OILS; POLYMER; UREA; LIGNIN; WATER; IPN;
D O I：
10.1080/25740881.2018.1563134
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The paper presents a new controlled release fertilizer coated by dimer acid-based polyurethane (PU). The structure and property of the sample were characterized. Results indicated that the polyether polyol modified PU (MPU) coating reduced water absorption rate by 72.1% after 29 d, and increased the cross-linking density by 23%, and decreased the coating porosity by 26%, Moreover, MPUFs and PUFs both exhibited excellent nutrient controlled release abilities, especially the MPUF possessed longer nitrogen release longevity (118 d,131%) compared with PUF (51 d). Thus, the high-performance MPUFs with environmentally friendly and excellent controlled release could be widely applied to agricultural fields. [GRAPHICS] .
引用
收藏
页码：1571 / 1584
页数：14
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