Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1990-10-22
1994-12-20
Davis, Jenna L.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
264 451, 264 464, 264 48, 423649, 4283179, 4283211, B32B 326, C01B 302
Patent
active
053744764
ABSTRACT:
A passive insulating system can provide highly effective protection in the presence of transient high temperatures. The system comprises, for example, a porous body forming a multiplicity of fine cells with a material having low thermal conductivity, a thermally absorptive liquid, providing an endothermic reaction in the presence of a catalyst, and a finely divided catalyst for the reaction uniformly distributed in the porous body. In preferred systems, the thermally absorptive liquid is para-hydrogen, the catalyst is granulated ferric oxide, and the liquid para-hydrogen changes to gaseous para-hydrogen, and from para-hydrogen to ortho-hydrogen in the presence of the ferric oxide catalyst, absorbing heat by its heat of vaporization and endothermic catalytic reaction and reducing heat transfer through the porous body.
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Alberding Gilbert E.
Ball Corporation
Davis Jenna L.
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