Feng Yong-yue
2008
Citations
0
Influential Citations
0
Citations
Journal
Journal of Guangzhou University
Abstract
As one of the major derivatives of the bis(4-maleimidophenyl)methane(BDM),bis(3-ethyl-4-maleimidophenyl)methane(BEDM) was obtained via a four-step reaction,which was based on the material of o-ethylnitrylbenzene.Chemical structure of the BEDM was confirmed by FTIR and 1H NMR spectra.Acid value of the BEDM sample was 1.74 mg(KOH)/g.Melting point of the BEDM was determined to be 203℃~204℃ with a Gallenkamp hot-block melting point apparatus,and 212℃ by DSC,which is higher than that of the BDM.Solubility of the BEDM is much better than that of the BDM.The BEDM dissolves in some solvents with lower boiling point,such as acetone,chloroform and ethane,etc.Furthermore,nonisothermal curing kinetics of the BEDM resin was investigated to provide information on kinetic parameters,including the curing reaction order(n),activation energy(E),frequency factor(A) and rate constant(k) at different heating rates.Value of the curing reaction order was calculated to be 0.94.The activation energy of the BEDM is higher than that for the BDM resin,which might be related to the steric hindrance induced by the ethyl groups in the BEDM molecular structure.Above works laid the foundation for further study and application of the BEDM resin.