A carbon / carbon composite fin with local reinforcement structure and a method for manufacturing the same

By introducing a through-hole structure into the graphite mold design of carbon/carbon composite fins, local reinforcement of the fin arc transition zone is achieved, solving the problems of stress concentration and local performance regulation, improving the mechanical properties and connection stability of the fins, and making them suitable for high heat flux density and strong aerodynamic load environments.

CN122401980APending Publication Date: 2026-07-17NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Filing Date
2026-04-17
Publication Date
2026-07-17

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Abstract

本发明涉及复合材料制备技术领域，公开了一种具有局部加强结构的碳 / 碳复合材料翅片的石墨模具及制备方法。该石墨模具包括凸模和凹模，凸模工作面设有半圆柱形或圆弧形凸起，凹模工作面设有相配合的半圆柱形或圆弧形凹槽；凹模上还设有多个贯穿壁厚的通孔，位于凹槽至少一侧，且与碳 / 碳复合材料翅片的圆弧过渡区位置相对应。制备方法包括：将增强体逐层铺设形成预制体铺层；将预制体铺层放置于石墨模具的凸模上，使其中间区域贴合凸起，合上凹模并压紧；对预制体进行化学气相渗透沉积致密化；热处理得到具有局部加强结构的碳 / 碳复合材料翅片。本发明解决了现有碳 / 碳复合材料翅片在圆弧过渡区强度不足的问题，提高了翅片的整体力学性能。
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