Method of making carbon matrix composite from high temperature polymer matrix fiber-reinforced composites

US11440851B1 · kind B1 · utility

Assignee

• Systima Technologies, Inc. · US

Inventors

• Richard D. Hreha · Centerville, US
• Kristopher K. Aber · Dayton, US
• Joel P. Brubaker · Dayton, US
• Kristin M. Cable · Woodsfield, US
• Michael D. Rauscher · Dayton, US

Key dates

• Filing date: Feb 14, 2019
• Grant date: Sep 13, 2022
• Expiry date: Jun 18, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/385
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods of producing a carbon matrix composite are provided which include preparing a carbon matrix composite precursor comprising at least one carbon-based reinforcement material and a cured thermoset polymer matrix comprising a chemical composition in accordance with Formula I where n and m are integers, at least one of R1 or R2 comprises an aromatic moiety, and X is selected from the group consisting of CH2, NH, O, S, SO2, and combinations thereof. The methods further include heating the carbon matrix composite precursor in air to a first processing temperature of between 300° C. and 500° C. to form a carbon matrix composite intermediate, and heating the carbon matrix composite intermediate in nitrogen to a second processing temperature of between 900° C. to 1650° C. and holding at the second processing temperature for at least 1 hour in an inert gas environment to form the carbon matrix composite.