Optimisation of solvolysis for recycling carbon fibre reinforced composites

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Colleges, School and Institutes

External organisations

  • University of Birmingham
  • Cranfield University

Abstract

Solvolysis processes have been used to degrade the resin of two different varieties of epoxy based carbon fibre reinforced composite (CFRC) materials. A degradation of up to 98% has been achieved when processing material at a temperature of 320°C using a supercritical solvent mixture of acetone and water. Increasing the processing time from 1 to 2 hours shows an increase in the degradation of only 10% and there does not appear to be any benefit in processing the material beyond this time. Due to the batch conditions used, it is necessary to rinse the fibres with acetone after processing to remove remaining organic residue. Washing the fibres at supercritical batch conditions, however, does not efficiently remove the residue compared to a simple hand washing with acetone. Shredding the sample prior to processing also does not have a significant effect. The process investigated requires 19 MJ.kg-1 of fibres recovered and, since the process has not yet been optimised, shows strong potential for future development especially since it allows for the recovery and reuse of organic resinous products.

Details

Original languageEnglish
Title of host publicationECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
Publication statusPublished - 26 Jun 2016
Event17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany
Duration: 26 Jun 201630 Jun 2016

Conference

Conference17th European Conference on Composite Materials, ECCM 2016
CountryGermany
CityMunich
Period26/06/1630/06/16

Keywords

  • Carbon fibre, Composites, Recycling, Solvolysis

ASJC Scopus subject areas