Preparation method of high-strength molded carbon-ceramic brake disc and carbon-ceramic brake disc

By treating the surface of carbon fiber cloth and cross-laying it to form a three-dimensional preform, combined with resin impregnation, molding and silicon diffusion processes, the problems of long time and high cost in the existing carbon ceramic brake disc manufacturing process have been solved, realizing the manufacturing of high-strength and low-cost carbon ceramic brake discs, which are suitable for high-performance cars and racing cars.

CN121537220BActive Publication Date: 2026-11-06HUNAN SHIXIN NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202511790569.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-01
Publication Date
2026-11-06
Estimated Expiration
2045-12-01

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Abstract

This invention discloses a method for preparing a high-strength molded carbon-ceramic brake disc and the resulting carbon-ceramic brake disc. The preparation method involves: surface-treating carbon fiber cloth in a surface treatment liquid to form a protective film, then cross-laying it with a carbon fiber mesh fabric and needle-punching it layer by layer to obtain a three-dimensional preform; impregnating the three-dimensional preform with a resin impregnating agent and drying it, followed by molding to form a molded blank; subjecting the molded blank to carbonization and high-temperature treatment to form a carbon-carbon porous body; subjecting the carbon-carbon porous body to silicon infiltration treatment and then machining it to finally obtain a high-strength carbon-ceramic brake disc. The carbon fiber cloth used in this invention undergoes surface treatment before being laid to form a protective film on its surface, protecting the carbon fiber cloth during subsequent operations and preventing silicon corrosion of the carbon fiber during subsequent processing, thus improving the consistency of the brake disc's performance.
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Citation Information

Patent Citations

  • Composite based on liquid silicon infiltration, carbon / carbon porous material and preparation method of carbon / carbon porous material

    CN108794040A

  • Preparation method of carbon-ceramic brake disc

    CN119930315A