CIESC Journal

• PROCESS AND PRODUCT TECHNOLOGY • 上一篇    下一篇

有机硅改性水性环氧固化剂的合成及表征

卢光岐; 孙建中; 周其云   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2007-01-25 修回日期:1900-01-01 出版日期:2007-12-28 发布日期:2007-12-28
  • 通讯作者: 卢光岐

Synthesis and characterization of waterborne epoxy curing agent modified by silane

LU Guangqi; SUN Jianzhong; ZHOU Qiyun   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2007-01-25 Revised:1900-01-01 Online:2007-12-28 Published:2007-12-28
  • Contact: LU Guangqi

摘要: A novel waterborne epoxy curing agent was prepared using 3-glycidoxypropyl trimethoxysilane (GPTMS) as a termination agent of adduct, which was synthesized by triethylene tetramine (TETA) and liquid epoxy resin (E-51). The effects of the reaction temperature and time on the synthesis process were investigated experimentally. The particle size and the distribution of water dispersion of the curing agent were measured by dynamic light scattering (DLS). The structure of the products was characterized by Fourier transform infrared spectrometer (FTIR) and 1H-nuclear magnetic resonance (1H NMR). The properties of the synthesized curing agent and the epoxy resin film cured by it were also measured. The results showed that the appropriate temperature for the synthesis of adduct was at 65—75℃ and the reaction time was 4—5h, and that the suitable reaction temperature of curing agent synthesis was 75—85℃ and the reaction time was 3—4h. When the mass ratios of GPTMS and acetic acid were 3%—5% and 5%—10% respectively, the hardness, water resistance and adhesion of the cured film were improved significantly.

关键词: waterborne epoxy curing agent;silane;modification

Abstract: A novel waterborne epoxy curing agent was prepared using 3-glycidoxypropyl trimethoxysilane (GPTMS) as a termination agent of adduct, which was synthesized by triethylene tetramine (TETA) and liquid epoxy resin (E-51). The effects of the reaction temperature and time on the synthesis process were investigated experimentally. The particle size and the distribution of water dispersion of the curing agent were measured by dynamic light scattering (DLS). The structure of the products was characterized by Fourier transform infrared spectrometer (FTIR) and 1H-nuclear magnetic resonance (1H NMR). The properties of the synthesized curing agent and the epoxy resin film cured by it were also measured. The results showed that the appropriate temperature for the synthesis of adduct was at 65—75℃ and the reaction time was 4—5h, and that the suitable reaction temperature of curing agent synthesis was 75—85℃ and the reaction time was 3—4h. When the mass ratios of GPTMS and acetic acid were 3%—5% and 5%—10% respectively, the hardness, water resistance and adhesion of the cured film were improved significantly.

Key words: waterborne epoxy curing agent, silane, modification