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Citation: MA Yuqin, ZHENG Changmei, YANG Tianbo, WEI Wei, LIU Meihua, ZHENG Chunbai, DENG Pengyang, GAO Ying. Reaction Characteristics of Epoxy Resins E-51 Cured by 1-Hexyl-3-Methyl Imidazole Iron Tetrachloride Salt[J]. Chinese Journal of Applied Chemistry, ;2015, 32(6): 636-640. doi: 10.11944/j.issn.1000-0518.2015.06.140375 shu

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

MA Yuqin ^a ,
ZHENG Changmei ^a ,
YANG Tianbo ^c ,
WEI Wei ^b,, ,
LIU Meihua ^b ,
ZHENG Chunbai ^b ,
DENG Pengyang ^b ,
GAO Ying ^a,,

1.
a Changchun University of Science and Technology, Changchun 130022, China;
2.
b Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
3.
c Jilin University, Changchun 130025, China

Corresponding author: WEI Wei, GAO Ying,
Received Date: 31 October 2014
Available Online: 28 January 2015
Fund Project: 国家发改委东北振兴项目(130222406210056)资助 (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.
- hexyl-methylimidazole iron tetrachloride salt,
- bisphenol epoxy resin,
- high temperature curing agent,
- dynamics
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