Superinsulation with nanopores
AssigneeIndustrial Science & Technology Network, Inc.
InventorArthur J. Yang
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Abstract
This invention relates to the field of thermal insulation. In particular, the invention describes superinsulation articles having a desired porosity, reduced pore size and cost-effective methods for manufacturing such articles. In one aspect of the present invention, the article may comprise a material system with at least about 20% porosity. In a further aspect of the invention, an article may comprise greater than about 25% of nanopores having a pore size no greater than about 1500 nanometers in its shortest axis.
Claims16
A method for manufacturing an article comprising a polymer material system with at least 95% porosity comprising greater than 10% asymmetrical pores, comprising:
- i) forming one or more gas nuclei in a polymer material;
- and
- ii) asymmetrically expanding the one or more gas nuclei via gas foaming to form one or more gas bubbles, wherein the size of the one or more gas bubbles is no greater than 1500 nanometers in its shortest axis.
Dependencies are inferred from the claim text.