Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (6): 636-640.DOI: 10.11944/j.issn.1000-0518.2015.06.140375

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Reaction Characteristics of Epoxy Resins E-51 Cured by 1-Hexyl-3-Methyl Imidazole Iron Tetrachloride Salt

MA Yuqina, ZHENG Changmeia, YANG Tianboc, WEI Weib, *, LIU Meihuab, ZHENG Chunbaib, DENG Pengyangb, GAO Yinga, *   

  1. aChangchun University of Science and Technology,Changchun 130022,China
    bChangchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    cJilin University,Changchun,130025,China
  • Received:2014-10-31 Accepted:2015-01-28 Online:2015-06-10 Published:2015-06-10
  • Contact: Wei WEI,Ying GAO
  • Supported by:
    Supported by the National Development and Reform Commission Northeast Revitalization Project(No.130222406210056)


Here we investigated the curing reaction between bisphenol epoxy resin E-51 and 1-hexyl-3- methylimidazole iron tetrachloride salt([C6mim]FeCl4) by differential scanning calorimetry. It was confirmed that the multi-level amine structure makes [C6mim]FeCl4 possible to be used as high-temperature curing agent for E-51. The curing reaction can be divided into two stages:at the first stage, the exothermic peak is about 120 ℃; at the second stage, the exothermic peak changes with the volume of [C6mim]FeCl4. When [C6mim]FeCl4 reacts with the mixed-amine to form a new curing agent, they exhibit apparent synergistic effect. The DSC results show that the new curing agent can react with E-51 under room temperature. The duration of exothermic peak is about 5 min at 30 ℃, and moreover, the duration decreases with the increasing temperature. The activation energy of the reaction calculated by the method of non-isothermal kinetics is 979 J/mol, which is only about 17% of the mixed-amine system. Finally, as the reaction order of the curing reaction is 0.5, it is believed to be a kind of random reaction.


Key words: hexyl-methylimidazole iron tetrachloride salt, bisphenol epoxy resin, high temperature curing agent, dynamics

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