Patent Number: 6,251,970

Title: Heat absorbing surface coating

Abstract: A heat absorbing coating having a plurality of micro-capsules each being an encapsulant shell and a heat absorbing material within the shell, and a carrier adherable to a substrate and throughout which the micro-capsules are dispersed. The heat absorbing material is preferably a phase change material and can be non-limitedly chosen from the group consisting of polyethylene, polypropylene, polywax, and combinations thereof. Shell material can be a metal such as copper, for example, or a polymer. The carrier can be a sprayable polymer mix which provides significant efficacy in uniform application to a substrate. An inventive substrate structure, such as an aircraft structure for example, has thereon the above-defined coating in an amount sufficient to absorb a sufficient amount of heat from the substrate to substantially inhibit thermal erosion in normal operating environments.

Inventors: Persiani; Carmine (Medford, NY), Clarke; James A. (Greenlawn, NY)

Assignee: Northrop Grumman Corporation

International Classification: B05D 5/00 (20060101); B64C 1/00 (20060101); B64C 1/40 (20060101); C09K 5/06 (20060101); C09K 5/00 (20060101); C09D 5/18 (20060101); C08K 009/02 ()

Expiration Date: 06/26/2018