New Method of Reprocessing Epoxy Thermosets

Tech ID: 30062 / UC Case 2018-757-0

Brief Description

Method using renewable monomers to easily make decomposable and recyclable epoxy thermosets with similar properties as thermosets made with BPA.

Background

Epoxy thermosets constitute one of the most widely used and versatile thermoset materials, as they possess incredible mechanical properties, chemical and thermal resistance and remarkable insulation. However, they are unable to be reshaped, reprocessed or recycled because of its infusible and insoluble nature after curing. Researchers have been studying how to make thermosets less inert by introducing dynamic covalent bonds into thermosetting materials, yet their processes require complex treatments like press heating, additional monomers or metal catalysts. In addition, recent literature on making thermosets reprocessable lacks effort in combating the use of bisphenol A (BPA), the most commonly used non-sustainable molecule in thermoset creation.

Description

Researchers at the University of California, Santa Barbara have found a way to easily make epoxy thermosets decomposable and recyclable. Their method uses renewable monomers to form epoxy thermosets with similar properties as thermosets made with BPA and omits the need for complicated processing or additional ingredients. Furthermore, these epoxy thermosets are soluble in organic or aqueous solutions under mild conditions and preserve all thermomechanical properties after reforming.

Advantages

  • Solubilize in organic or aqueous solutions under mild conditions
  • Reform from the solutions with full retention of thermal and mechanical properties
  • Doesn’t requiring the use of catalyst, expensive processing or addition of co-monomers to reshape and repair
  • Replaces bisphenol A (BPA)

Applications

  • Thermoset reprocessing
  • Plastics and materials
  • Carbon fiber recycling

Patent Status

Patent Pending

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Other Information

Keywords

indadvmat, Thermosets, Epoxy, Plastics, Recycling, Reprocessing

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