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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (21): 98-103.doi: 10.11924/j.issn.1000-6850.2013-0399

• 农学 农业基础科学 • 上一篇    下一篇

控释肥包衣剂的制备及理化性质研究

刘英 熊海蓉 文祝友 熊远福 李霞 刘俊   

  • 收稿日期:2013-02-16 修回日期:2013-03-21 出版日期:2013-07-25 发布日期:2013-07-25
  • 基金资助:
    国家“863”项目（纳米肥料关键技术研究）;农业部公益性行业(农业)科研专项（主要粮食作物一次性施肥技术研究与示范）;湖南省科技厅计划项目（肥料控释包衣剂的创制及控释性能研究）

Studies on Preparation and Physico-chemical Properties of Coating-agent for Controlled-fertilizer

  • Received:2013-02-16 Revised:2013-03-21 Online:2013-07-25 Published:2013-07-25

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摘要： 为了获得控释肥包衣剂的制备条件、探明其理化性质，以2种树脂为成膜材料，探讨了成膜材料复合比、成膜材料用量、增塑剂用量、乳化剂用量等单因素对控释肥包衣剂制备效果的影响，运用正交实验L9(34)确定了控释肥包衣剂制备的最佳条件；并对其pH、粘度、成膜时间、成膜性、衣膜水溶性、包衣均匀度、包衣脱落率等理化性质进行了测定。结果表明，控释肥包衣剂的最佳制备条件：树脂JZ与BZ复合比1:1.5，成膜材料用量12%，增塑剂用量0.8%，乳化剂用量1.0%，色素用量0.08%，乙酸乙酯用量86.12%。理化性质测定结果显示：pH 5.21，粘度为21.1 MPa/s，成膜性良好，衣膜不溶于水，成膜时间为6 min，包衣均匀度95%，包衣脱落率<8%，表明所制备的控释肥包衣剂理化性质良好。

关键词: 品质化学, 品质化学

Abstract: To obtain the preparation conditions and explore the physico-chemical properties of coating-agent for controlled-fertilizer, the single factor tests of the composite ratio of film-forming materials, the amount of film-forming materials, plasticizer, emulsifier and pigment were made with two resins as the film-forming materials, and the optimal preparation conditions of coating-agent for controlled-fertilizer were determined by orthogonal test L9(34). The physico-chemical properties of the pH, viscosity, film-forming time, film-forming properties, water solubility of coated film, coating uniformity, coating-off rate were measured. The results showed that, the optimal preparation conditions were as follows: the composite ratio (JZ:BZ) was 1:1.5, amount of film-forming materials was 12%, plasticizer was 0.8%, emulsifier was 1.0%, pigment was 0.08% and solvent was 86.12%. Test results of physico-chemical properties showed that, the pH was 5.21, viscosity was 21.1 MPa/s, the film was good and indissolvable in water, the film-forming time was 6 min, coating uniformity was 95%, coating-off rate was less than 8%, which indicated that the coating-agent for controlled-fertilizer had good physico-chemical properties.