Improvement in Peel-adhesive Properties by Toughening of Epoxy Resins Using Preformed Thermoplastic Polymer ParticlesImprovement in Peel-adhesive Properties by Toughening of Epoxy Resins Using Preformed Thermoplastic Polymer Particles

DOI Web Site 1 Citations

Bibliographic Information

Other Title
  • 高分子微粒子改質剤によるエポキシ樹脂高靭性化と剥離接着強さ向上

Description

The aim of this study is to characterize the adhesive properties of the toughened epoxy resins blended with pre-formed polyamide-12 particles in comparison with conventional approach using core-shell rubber particles.Dicyandiamide (DICY) cured diglycidyl ether of bisphenol-A was used as the base epoxy resin.T-peel adhesive strength of the toughened resin including 20phr polyamide-12 particles was about 3-times as strong as that of the non-modified resin.In the case of rubber toughening, however, the improvement in adhesive strength tended to saturate to a certain level, even with improving in the resin toughness.Polyamide particles embedded in epoxy resin matrix were fractured after the large plastic deformation during the peel process, which suggested the crack bridging mechanism by the particles worked behind the crack tip.The crack-wake toughening mechanism using the thermoplastic polymer particles would avoid the constraint on the plastic deformation by the existence of aluminum adherends and be promising to utilize the bulk resin toughness even the case of thin bond thickness of resin layer.This would not be the case of rubber toughening which works in front of the crack tip.

Journal

Citations (1)*help

See more

Details 詳細情報について

Report a problem

Back to top