Insulation material
AssigneePyrotek, Inc.
InventorsMaurice Lacasse, Luc Desrosiers
Life of this patent
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Abstract
The method is for use with a substrate having a plurality of parallel channels extending therethrough. In the method, the steps comprise: filling a selected plurality of the channels with a granular material ; and consolidating the granular material through heat. The selected plurality of channels is selected to produce a wall that separates the substrate into: a first portion having a first plurality of the parallel channels extending therethrough; and a second portion having a second plurality of the parallel channels extending therethrough.
Claims20
A method of forming an insulating material comprising the steps of:
- a) mixing from about 65 to 85% by weight of fly-ash with from about 15 to 35% by weight of a heat sensitive binder;
- b) casting the mixture obtained in step (a), and
- c) firing said casting to at least about 800° C.
A free flowing insulating material having a thermal conductivity of between about 0.8 and 1.8 BTUin/ft2·hr°F., wherein said material comprises:
- a) from about 65 to 85% by weight of fly-ash, b) from about 2 to 15% by weight of a heat sensitive binder;
- c) from 0 to 7% by weight of a non-wetting agent selected from the group consisting of calcium fluoride, magnesium fluoride and barium sulphate;
- d) from 0 to 10% by weight of a heat expandable material selected from the group consisting of vermiculite and graphite;
- and
- e) from 0 to 1% by weight of a dust suppressant, said insulating material having a flexural strength (CMOR) of at least about 200 psi.
Dependencies are inferred from the claim text.