Fabrication and Properties of Porous Epoxy Composites
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TQ174.6

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    Abstract:

    The porous epoxy materials were successfully fabricated using epoxy, curing agents (RATEPA and DRATEPA) prepared with ricinoleic acid (RA) or dimerization ricinoleic acid (DRA) and tetraethylenepentamine (TEPA), glaze powder as filler and water via epoxy-water-filler suspended emulsion polymerization at ambient temperature. Pore size distribution, structure of the pore, porosity, mechanical properties and thermal properties of porous epoxy material were characterized in the present research. The results revealed as the mass ratio of aqueous phase to epoxy phase and particle size of glaze powder increased, the pore size and porosity increased and the compressive strength decreased. Meanwhile, the pore size and porosity decreased and the compressive strength increased as the molecular weight of the curing agent increased. When the particle size of glaze powder is 40μm, the curing agent is RATEPA, the mass ratio of aqueous phase to epoxy phase was 2:1, the overall performance of the porous epoxy materials reached to a relatively excellent stage: the pore size is 3.449μm, the porosity is 21.8%, the compressive strength is 26.89MPa. The TGA results indicated that the resulting porous epoxy material showed excellent thermal properties before the temperature reached 379oC

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History
  • Received:August 23,2016
  • Revised:October 20,2016
  • Adopted:December 14,2016
  • Online: April 07,2017
  • Published:
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