The Boeing Company

Mcdonnell Douglas Corporation

James E French

Wen Li

Andrew Paul Nowak

Chaoyin Zhou

Richard E Sharp

William Webster Behrens

Andrew Richard Tucker

Gayl J Miller

William H Behrens

Jerry M Fitzgibbons

Gary J Miller

Methods and formulations for modified silicone resins of Formula (I) are presented: The R, R, and Rare each independently selected from a group consisting of H, alkyl, alkenyl, alkynyl, and aryl; n ranges from 1 to 10; m ranges from 1 to 200; and p ranges from 2 to 1,000. The elastomeric materials prepared from modified silicone resins display robust mechanical properties following prolonged exposure to high temperatures (e.g., 316&#xb0; C. or higher).

Temperature-resistant silicone resins

Methods and formulations for modified silicone resins of Formula (II) are presented. Formula (II) comprises at least one of each of the following subunits: The R, R, R, R, R, R, R, R, R, Rand Rare each independently selected from a group consisting of H, alkyl, alkenyl, alkynyl, and aryl. The X is selected from a group consisting of arylene, transition metal, inorganic oxide, and silsesquioxane. The values of t ranges from 1 to 10, y ranges from 1 to 200 and z ranges from 1 to 1,000. The elastomeric materials prepared from modified silicone resins display robust mechanical properties following prolonged exposure to high temperatures (e.g., 316&#xb0; C. or higher).

Methods and formulations for modified silicone resins of Formula (II) are presented. Formula (II) comprises at least one of each of the following subunits: The R, R, R, R, R, R, R, R, R, Rand Rare each independently selected from a group consisting of H, alkyl, alkenyl, alkynyl, and aryl. The X is selected from a group consisting of arylene, transition metal, inorganic oxide, and silsesquioxane. The values oft ranges from 1 to 10, y ranges from 1 to 200 and z ranges from 1 to 1,000. The elastomeric materials prepared from modified silicone resins display robust mechanical properties following prolonged exposure to high temperatures (e.g., 316&#xb0; C. or higher).

An apparatus and method for surface temperature control is provided. Surface temperature control is achieved by flowing coolant in and then out of a low strength porous layer attached to a structural plenum. A semi-permeable layer may be attached to the outer surface of the porous layer to prevent erosion of the porous layer and to facilitate surface film cooling.

Cooled insulation surface temperature control system

High strength fiber reinforced ceramic composites having low dielectric constants stable against high temperatures are made possible by post oxidation of 35-60 volume percent ceramic matrix enveloping 20-60 volume percent ceramic fiber.

Process for production of low dielectric ceramic composites

A method for providing a ceramic coating on a ceramic or metallic substrate and the ceramic coating composition useful therein. The coating composition comprises a putty-like material comprising a colloidal silica, a base for gelling the silica, a filler, and no more than 50 wt. % of a volatile solvent or solvents. The putty-like material is rolled onto the desired substrate and cured to form a protective ceramic coating of any desired thickness. The cured coating may be fired, if desired.

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Ballwin, MO, United States of America

James E French