L3-silica/polyurethane thermally insulating nanocomposite

摘要

The present invention provides thermal insulator composites based upon nanostructured L₃-silica microparticles and polyurethane foam chemistry that are both easy to process and have superior insulating properties for use in household and commercial refrigeration, construction, and shipping applications. The composite material retains many of the attractive processing characteristics of polyurethane foams such as volume expansion and shape-filling during polymerization and demonstrates a total thermal conductivity between 32 and 44% that of commercially available polyurethane foams.