Improving the Insulating Capacity of Polyurethane Foams through Polyurethane Aerogel Inclusion: From Insulation to Superinsulation.

ABSTRACT: A novel synthesis of polyurethane foam/polyurethane aerogel (PU_F-PU_A) composites is presented. Three different polyurethane reticulated foams which present the same density but different pore sizes (named S for small, M for medium, and L for large) have been used. After the characterization of the reference materials (either, foams, and pure aerogel), the obtained composites have been characterized in order to study the effect of the foam pore size on the final properties, so that density, shrinkage, porous structure, mechanical properties, and thermal conductivity are determined. A clear influence of the pore size on the density and shrinkage was found, and the lowest densities are those obtained from L composites (123 kg/m³). Moreover, the aerogel density

SUBMITTER: Merillas B 

PROVIDER: S-EPMC9268151 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature