Viscoelastic creep characteristics of neat and E-glass reinforced thermoset resins Conference Paper uri icon


  • The long-term creep behavior of vinyl esters and polyesters has been studied as a function of curing conditions using flexural creep tests at ambient temperature (23 C). Polymers formed from vinyl ester resins have better creep compliance performance than polymers formed from either ortho or iso polyester resins. Vinyl esters which have been cured at room temperature had a much greater creep exponent (n to approximately 0.20) for power law creep (tn) than vinyl esters which were postcured at 93 C to generate a completely cured polymeric system (with complete crosslinking, n to approximately 0.12). Reinforcements using knitted E-glass fabric in the room temperature cured vinyl ester and the vinyl ester postcured at 93 C gave much lower compliances, but with approximately the same time exponents (n to approximately 0.20 and 0.13 respectively). For unreinforced vinyl ester polymers the total creep compliance as well as the time exponent `n' decreased systematically with increasing cure condition.

published proceedings


author list (cited authors)

  • Puckett, P. M., Bradley, S. W., Bradley, W. L., & Sue, H. J.

complete list of authors

  • Puckett, PM||Bradley, SW||Bradley, WL||Sue, HJ

publication date

  • December 1997