一种多级协同强化的纳米共价连接石墨烯预制体及其在金属基复合材料中的应用
The method for preparing nano-covalently linked graphene preforms through multi-level synergistic reinforcement solves the problems of insufficient compressive strength and incomplete infiltration of graphene in metal matrix composites, improves conductivity and mechanical properties, and reduces production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF SCI & TECH OF CHINA
- Filing Date
- 2025-12-05
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, graphene in metal matrix composites suffers from problems such as insufficient compressive strength of the physical overlap structure, graphene lattice defects caused by high-temperature deposition, and nanostructure collapse during metal infiltration.
A multi-level synergistic reinforcement method for preparing nano-covalently linked graphene preforms includes steps such as modified sol preparation, directional cryogenic molding, plasma-activated deposition, microwave covalent bonding, and metal infiltration. Through transition metal catalysis, magnetic field orientation, plasma deposition, and microwave bonding, a tertiary porous structure and a Si-C interface layer are formed, and carbon quantum dots are generated to strengthen the end connections.
This approach improves the mechanical properties of graphene preforms, increases conductivity, enhances impregnation compatibility, reduces the need for high-pressure impregnation, minimizes complex pretreatment, and lowers mass production costs.
Smart Images
Figure CN121778718B_ABST