Reactive blending of functionalized acrylic rubbers and epoxy resins

Clelia Dispenza, Giuseppe Spadaro, Carter, Patrick T. Mcgrail

Risultato della ricerca: Articlepeer review

12 Citazioni (Scopus)

Abstract

A high molecular weight acrylonitrile/butadiene/methacrylic acid (Nipol 1472) rubber is chosen to control processability and mechanical properties of a TGDDM (tetra glycidyl diphenyl methane) based epoxy resin formulation for aerospace composite applications. The physical blend of rubber and epoxy resin, achieved by dissolution of all the components in a common solvent, forms a heterogeneous system after solvent removal and presents coarse phase separation during cure that impairs any practical relevance of this material. A marked improvement of rubber-epoxy miscibility is achieved by reactive blending ('pre-reaction') the epoxy oligomer with the functional groups present in the rubber. The epoxy-rubber 'adduct' so obtained appears as a homogeneous system at room temperature and also after compounding with the curing agent. Depending on the nature and extent of interactions developed between the rubber and the epoxy resin during 'pre-reaction,' materials with different resin flow characteristics, distinctive morphologies and mechanical properties after curing were obtained. The effect of 'pre-reaction' on the resin cure reaction kinetics has been also investigated.
Lingua originaleEnglish
pagine (da-a)1486-1496
Numero di pagine11
RivistaPolymer Engineering and Science
Volume41
Stato di pubblicazionePublished - 2001

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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