Recycling Process for Cross Member Composite Parts

The recycling of cross-member composite (CMC) parts was studied using partial decrosslinking of the polyurethane (PUR) composite matrix by catalyzed glycolysis. The decrosslinked material, containing reactive OH and NH₂ groups, was reacted with polymeric isocyanate in a molding operation to form a n...

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Bibliographic Details
Published in:SAE transactions 1999-01, Vol.108, p.576-580
Main Authors: Kresta, Jiri E., Molla, Abul H., Xiao, Han X., Suthar, Bhikhu, Klempner, Daniel, Swindell, Jonathan
Format: Article
Language:English
Subjects:
Automobiles
Catalysts
Composite materials
Glycols
Isocyanates
Materials
Molding
Polymers
Reactants
Recycling
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Summary:The recycling of cross-member composite (CMC) parts was studied using partial decrosslinking of the polyurethane (PUR) composite matrix by catalyzed glycolysis. The decrosslinked material, containing reactive OH and NH₂ groups, was reacted with polymeric isocyanate in a molding operation to form a new composite product. In order to make the process economically feasible the smallest amounts of reactants (glycol, catalyst, isocyanate) were used in the process. The results of the laboratory study were verified in semi-pilot plant runs. The economic analysis showed that the process is feasible.
ISSN:0096-736X
2577-1531