SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (1): 309-314.DOI: 10.1016/j.cjche.2014.09.034

• MATERIALS AND PRODUCT ENGINEERING • Previous Articles     Next Articles

Application of waterborne acrylic emulsions in coated controlled release fertilizer using reacted layer technology

Yazhen Shen, Cong Zhao, Jianmin Zhou, Changwen Du   

  1. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
  • Received:2013-03-01 Revised:2013-07-12 Online:2015-01-24 Published:2015-01-28
  • Contact: Changwen Du
  • Supported by:

    Supported by the National 12th Five-Year Science and Technology Supporting Program (2011BAD11B01), and the Research & Development Projects Cooperation Project of Chinese Academy of Sciences (YDJDBNJ-2012-023).

Application of waterborne acrylic emulsions in coated controlled release fertilizer using reacted layer technology

Yazhen Shen, Cong Zhao, Jianmin Zhou, Changwen Du   

  1. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
  • 通讯作者: Changwen Du
  • 基金资助:

    Supported by the National 12th Five-Year Science and Technology Supporting Program (2011BAD11B01), and the Research & Development Projects Cooperation Project of Chinese Academy of Sciences (YDJDBNJ-2012-023).

Abstract: Waterborne acrylic emulsions modified with organic siloxanes and aziridine crosslinker were synthesized and applied as coating of controlled release fertilizer. The free films were characterized and the nutrient release profiles of the coated fertilizers were determined. The results show that methyl silicone oil and methylsilanolate sodiumcould not improve water resistance performance and glass transition temperature Tg of coatings, while the firmness is enhanced. Aziridine crosslinker improves the water resistance performance, firmness and Tg. Incorporation of methyl silicone oil and aziridine crosslinker gives an excellent aqueous acrylic emulsion for coated controlled release fertilizer, with the 30-day cumulative nutrient release reduced to 16% and an estimated nutrient release duration over 190 days. Therefore, this waterborne coating is promising to meet the requirements for controlled release of nutrient and environmental protection.

Key words: Controlled release fertilizer, Acrylic emulsion, Siloxane, Crosslinker, Reacted layer technology

摘要: Waterborne acrylic emulsions modified with organic siloxanes and aziridine crosslinker were synthesized and applied as coating of controlled release fertilizer. The free films were characterized and the nutrient release profiles of the coated fertilizers were determined. The results show that methyl silicone oil and methylsilanolate sodiumcould not improve water resistance performance and glass transition temperature Tg of coatings, while the firmness is enhanced. Aziridine crosslinker improves the water resistance performance, firmness and Tg. Incorporation of methyl silicone oil and aziridine crosslinker gives an excellent aqueous acrylic emulsion for coated controlled release fertilizer, with the 30-day cumulative nutrient release reduced to 16% and an estimated nutrient release duration over 190 days. Therefore, this waterborne coating is promising to meet the requirements for controlled release of nutrient and environmental protection.

关键词: Controlled release fertilizer, Acrylic emulsion, Siloxane, Crosslinker, Reacted layer technology