Article
  • Curing Reaction of Bis-F Epoxy Resins by Aromatic Diamine.1
  • Maeng KS, Kim KS, Shin DK, Kim YC
  • 방향족 디아민에 의한 Bis-F계 에폭시수지의 경화반응.1
  • 맹기석, 김공수, 신동근, 김영철
Abstract
The curing reactions of diglycidyl ether of bisphenol-F(DGEBF) and diglycidyl ether of bisphenol-A(DGEBA) hardened with the stoichiometric amount of p, p''-diamino diphenyl methane(DDM) were carried out in the temperature range of 110∼ 125℃ in Differential Scanning Calorimeter(DSC). The reactions are accelerated by the hydrogen-bond donor produced through the curing reaction of epoxy and amino and the experimental results were checked against the known autocatalytic reaction kinetic model. The activation energy obtained from maximum reaction rate and final curing time of DSC exotherm curve was found to be reasonably agreed with the result obtained from proposed kinetic model. All kinetic parameters of the curing reaction, including the kinetic constant, reaction order, activation energy and frequency factor were discussed. The extent of the residual exotherm were also discussed.

Diglycidyl ether of bisphenol-F(DGEBF), Diglycidyl ether of bisphenol-A(DGEBA)와 p, p''-diamino diphenyl methane(DDM)의 당량비 경화반응을 isothermal differential scanning calorimeter(iso-DSC)를 사용하여 110∼125℃에서 연구하였다. 이들의 경화반응은 에폭시기와 아민 반응과정에서 생성되는 수산기에 의해 반응을 촉진하는 자촉매 경화반응을 보여주므로 자촉매(3차) 반응모델을 이용하여 고찰하였다. DSC 발열곡선의 최종경화시간(tc)과 등은 최대반응속도(dαp/dt)로 부터 얻어진 활성화에너지는 3차반응모델로부터 얻어진 활성화 에너지와 잘 일치 하였으며, 이들로 부터 반응차수, 활성화에너지, 빈도인자 등을 결정하여 동력학적으로 고찰하였고 잔여 경화반응열에 대해서도 검토하였다.

Keywords:

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1990; 14(2): 160-169

    Published online Apr 25, 1990

  • 10.7317/pk.
  • Received on Nov 30, -0001
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

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