Abstract
Polyurethane foam was decomposed by diethanolamine (DEA) in continuous decomposing apparatus and recycled as epoxy resin. In this study, effects of amount of DEA used in the decomposing process and mixture ratio of decomposed product to epoxy resin on the properties of the recycled resin were investigated. It was found that, in the case of changing mixture ratio of decomposed product to epoxy resin, the recycled resin showed good mechanical and electrical properties at a peak of mixture ratio vs. glass transition temperature, depending on the amount of DEA in the decomposing process. In addition, the properties of these samples were equivalent to those of anhydride cured epoxy resin.
