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High-temperature polymer-matrix composite coating and protection and method of preventing coating from being exposed to high temperatures

A high-temperature polymerization and compound technology, used in vacuum evaporation plating, coating, melting spray plating, etc.

Inactive Publication Date: 2016-05-25
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Inorganic and organic polymer coatings can also be used as barrier coatings, but have unacceptably high permeability to allow oxygen to reach the HTPMC substrate and cause thermo-oxidative degradation to occur

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  • High-temperature polymer-matrix composite coating and protection and method of preventing coating from being exposed to high temperatures
  • High-temperature polymer-matrix composite coating and protection and method of preventing coating from being exposed to high temperatures
  • High-temperature polymer-matrix composite coating and protection and method of preventing coating from being exposed to high temperatures

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Embodiment Construction

[0020] In the detailed description below, various embodiments of HTPMC substrates coated with conductive carbon-based barrier coatings and related methods for protecting HTPMC substrates from exposure to high temperatures in the presence of air are described with reference to aerospace structures. , thus illustrating the basic principles of the present disclosure. Those skilled in the art will recognize that the present disclosure may be practiced in other simulated applications or environments of the illustrative embodiments and / or with other simulated variations or equivalents of the illustrative embodiments. For example, conductive carbon-based barrier coatings and methods for protecting HTPMC substrates from exposure to high temperatures in the presence of air can be applied to engine applications in the automotive industry or oil well applications in the oil drilling industry that are exposed to high temperatures. Those of ordinary skill in the art will recognize and appr...

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Abstract

A high-temperature polymeric-matrix composite (HTPMC) structure and a method for protecting an HTPMC from exposure to high temperatures in the presence of air, and prevent thermo-oxidative degradation. A thin, lightweight layer of a carbon-based barrier is applied onto a surface of the HTPMC structure. The carbon-based barrier coating is composed of graphene, amorphous carbon, or a mixture comprising a combination of graphene and amorphous carbon, and has coefficient of thermal expansion that is less than 10 times the coefficient of thermal expansion of the HTPMC structure. The carbon-based barrier may be coated with an erosion-barrier.

Description

technical field [0001] The present disclosure relates generally to coatings for composites, and more particularly, to carbon-based barrier coatings (carbon-based barrier coatings) for high temperature polymer matrix composites ("HTPMCs") and Methods for improving the protection of HTPMC from thermo-oxidative degradation. Background technique [0002] Polymer matrix composites ("PMCs"), such as HTPMC, are commonly used in the aircraft and aerospace industries due to the weight savings when polymer matrix composites are used to replace metal parts. However, exposure to high temperatures (e.g., 350°F to 700°F) in the presence of air degrades the mechanical properties of PMC and HTPMC and can cause thermo-oxidative degradation of PMC and HTPMC, limiting their shortened useful life and / or Limit its use to low temperature environments. For example, HTPMC typically has a limited lifetime of between approximately 1000 hours and 3000 hours at elevated temperatures in the presence o...

Claims

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Application Information

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IPC IPC(8): C08J7/06C09D1/00C09D5/08
CPCC23C4/18C23C16/26C23C4/04C23C14/0605
Inventor 托马斯·卡尔·佐齐斯
Owner THE BOEING CO
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