Effect of Two-component solution-crosslinking Agent on Recycling of waste PU to prepare composites

Abstract

The waste polyurethane rigid foam was degraded by two-component decrosslinking agent, and a qualified glass fiber reinforced waste polyurethane rigid foam is prepared by compounding the obtained oligomer polyol with a certain percent of glass fibers. The regenerated oligomer polyols were measured for infrared spectroscopy. The foam samples were analyzed for density, water absorption, and compressive strength. The results show that when the mass ratio of DEG/ETA is 1/3, the prepared composite material has the best performance.