Epoxy dian oligomer, curing

For compounds of epoxy resins based on epoxy-diane oligomers and resorcinol diglycidyle esters set with amine curing agents, the dependence of Tad on the content and type of the modifying additive displays distinct maxima. The adhesion strength is enhanced most when the SKD-KTRA rubber is applied at 20% (see Figs. 3.17 and 3.18). With SKN-KTR as modifier the effect is less. 

Davtyan, D. S., Baghdasaryan, A. E., Tonoyan, A. O., Davtyan, S. R. To the contribution of thermal convective mass transfer of the reactive mixture components to frontal curing of epoxy diane oligomers. Khimicheskaya fizika, vol.l9, ffo 9, pp. 100-109,2000. 

Modification of epoxy polymers by rubbers results in decrease of the residual stresses Cdresid cured in. Thus, for the polymers based on UP-637 and cured by UP-0639, Cdfesid monotonically from 5.5 to 2.0MPa as the SKD-KTRA rubber content increases from 0% to 30%. For the compoimds based on the diane oligomer, the stresses decrease under the same conditions from 10.2 to 5.5 MPa because of the increase of the deformation characteristics and of the acceleration of relaxation. 

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