Carbon fiber preform, preparation method therefor and preparation method for carbon/carbon composites

US12227462B2 · kind B2 · utility

Assignee

• SHAOXING RESEARCH INSTITUTE OF SHANGHAI UNIVERSITY · CN

Inventors

• Aijun Li · Nanhu, CN
• Lixin Ning · Zhejiang, CN
• Zhiwei Kang · Zhejiang, CN
• Zhiwei Li · Lo Wu, CN
• Liquan Chen · 流花街道, CN
• Liqi Liu · Tangxia, CN
• Lintao Jia · Zhejiang, CN
• Mengqian Wang · Zhejiang, CN

Key dates

• Filing date: Aug 24, 2022
• Grant date: Feb 18, 2025
• Expiry date: Aug 24, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/6567
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed is a carbon fiber preform, a preparation method therefor and a preparation method for carbon/carbon composites, falling within the technical field of composites. The carbon fiber preform provided by the present disclosure includes a plurality of stacked carbon fiber cloths and prestressed layers arranged between every two of adjacent carbon fiber cloths, the prestressed layer including a boron-containing phenol-formaldehyde resin coating and carbon fiber bundles distributed within the boron-containing phenol-formaldehyde resin coating. In the present disclosure, the prestressed layers are formed by adding the carbon fiber bundles and a boron-containing phenol-formaldehyde resin precursor to a two dimensional (2D) stacked preform, thereby counteracting internal stresses during carbonization and obtaining a carbon/carbon composite having higher strength and being less prone to cracking.