The influence of the rubber carboxyl functionality on the processability and properties of solid rubber modified epoxy mixtures

Giuseppe Spadaro, Clelia Dispenza, Patrick T. Mcgrail

Risultato della ricerca: Book/Film/Article review

5 Citazioni (Scopus)

Abstract

A high molecular weight, carboxyl functionalisedsolid rubber was added to an epoxy resin-aromaticamino system developed for autoclave curing of honeycombcore composite structures. The achievement of an optimalbalance of viscous flow and viscoelasticity of the resin, bycontrolling the nature and extent of cross-linking of the functionalisedrubber, was proposed as a route to void-free honeycombskins. The aim of the present investigation is tounderstand howthe concentration of carboxylic groups of therubber, prereacted with one of the epoxy monomers, affectsthe matrix resin flow properties. The concentration of carboxylgroups was changed by reacting them with a monofunctionalepoxy resin. Dynamic shear viscosity profiles varyingfrequency, temperature and as function of time during isothermalcure have been determined for blends with differentlyfunctionalised rubbers. Carbon fibre wettability and laminateconsolidation quality have been evaluated, making compositesamples according to conventional prepregging andautoclave curing processes, through electron microscopy offracture surfaces from transverse flexural strength tests.
Lingua originaleEnglish
pagine (da-a)393-403
Numero di pagine11
RivistaMacromolecular Chemistry and Physics
Volume206
Stato di pubblicazionePublished - 2005

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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