Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (05): 405-409.doi: 10.3866/PKU.WHXB20000506

• ARTICLE • Previous Articles     Next Articles

Kinetics of Succinic Anhydride Curing of Bisphenol-S Epoxy Resin

Gao Jun-Gang, Li Yan-Fang   

  1. Department of Chemistry,Hebei University,Baoding
  • Received:1999-08-18 Revised:1999-10-09 Published:2000-05-15
  • Contact: Gao Jun-Gang

Abstract:

The kinetics of the cure reaction for a system of bisphenol-S epoxy resin (BPSER),with succinic anhydride as a curing agent, was studied by means of differential scanning calorimetry(DSC).Analysis of DSC data indicated that in the first stage of the cure, the controlling reaction is of the autocatalytic nature. By using the model proposed by Kamal, two rate constants, k 1 and k 2,and two reaction orders, m and n were obtained. Rate constants k 1 and k 2 were observed to be greater when curing temperature increased. The overall reaction order, m+n, is in the range 2~2.5.The activation energies for k 1 and k 2 were 96.47 kJ•mol -1 and 79.63 kJ•mol -1 , respectively. Diffusion control was incorporated to describe the cure in the latter stages.

Key words: Bisphenol-S epoxy resin, Succinic anhydride, Cure reaction, Kinetics, Differential scanning calorimetry