Increasing the heat flow of flexible cellular foam through the incorporation of highly thermally conductive solids
AssigneePeterson Chemical Technology, Inc.
InventorsBruce W. Peterson, Gualtiero G. Giori, Mark L. Crawford
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Abstract
Methods and combinations of mattress support surfaces comprising one or more flexible polyurethane foam layers containing highly thermally-conductive solids, such as diamond or silicon carbide, and said layer combination is capable of transferring heat from a warm surface, such as a person sleeping on a bed, to a cooler region at a faster rate throughout the mattress than the thermal dissipation rate obtained from flexible polyurethane foam without highly thermally-conductive solids.
Claims14
A method for forming a flexible cellular polyurethane foam with highly thermally-conductive solids (HTCS Foam) comprising:
- introducing highly thermally-conductive solid particles into a mixture of flexible cellular foam-forming components comprising a polyol and an isocyanate, where the highly thermally-conductive solid particles are selected from a group consisting of synthetic diamond crystal powder, natural diamond crystal powder, type IIa diamond powder, synthetic diamond, carbonado, and combinations thereof, and where an average particle size of highly thermally-conductive solid particles ranges from about 50 nanometers to about 3000 microns;
- and
- polymerizing the polyol and the isocyanate in the presence of the highly thermally-conductive solid particles thereby forming the HTCS foam with highly thermally-conductive solid particles uniformly dispersed therein and bound to a foam matrix.
A method for forming a flexible cellular polyurethane foam with highly thermally-conductive solids (HTCS Foam) comprising:
- introducing from about from about 0.1% to about 50% by weight based on the final foam net weight highly thermally-conductive solid particles into a mixture of flexible cellular foam-forming components comprising a polyol and an isocyanate, where the highly thermally-conductive solid particles are selected from a group consisting of synthetic diamond crystal powder, natural diamond crystal powder, type IIa diamond powder, synthetic diamond, carbonado, and combinations thereof, and where an average particle size of highly thermally-conductive solid particles ranges from about 50 nanometers to about 3000 microns;
- and
- polymerizing the polyol and the isocyanate in the presence of the highly thermally-conductive solid particles thereby forming the HTCS foam with highly thermally-conductive solid particles uniformly dispersed therein and bound to a foam matrix, where the HTCS foam has a thermal conductivity at 75% compression that is at least 0.008 W/(m-° K) higher than an identical flexible cellular polyurethane foam in the absence of the highly thermally-conductive solid particles.
Dependencies are inferred from the claim text.