公开(公告)号：EP3389972A1

公开(公告)日：2018-10-24

申请号：EP16876520.4

申请日：2016-12-14

申请人： Continental Structural Plastics, Inc.

发明人： GUHA, Probir, Kumar ,  SIWAJEK, Michael ,  KRUG, David, J.

IPC分类号： B29B17/02

CPC分类号： B29B17/02 ,  B29B2017/0293 ,  B29K2105/06 ,  B29K2307/04 ,  Y02W30/622

摘要： A process is provided to reclaim carbon fiber from a cured vinyl ester, crosslinked unsaturated polyester, or epoxy thermoset matrix. The composite pieces are added to a polyol solvent composition under to conditions to free more than 95% by weight of the carbon fiber from the composite. The freed carbon fibers are washed and dried to reclaim carbon fiber reusable to reinforce a polymer to form a new FRC article. Solvents are chosen that are low cost and low toxicity. Processing is further facilitated by techniques such as solvent pre-swell of the particles, microwave heating, and sonication to promote thermoset matrix digestion to free reinforcing carbon fibers.