Process for sizing carbon fiber bundles
DE602022016003T2Active Publication Date: 2025-06-18TAIWAN SOKOU INDS KOFUN YUUGENKOUSHI
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Patent Information
- Application Number
- DE602022016003
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-07-29
- Publication Date
- 2025-06-18
- Estimated Expiration
- 2042-07-29
AI Technical Summary
Technical Problem
Current methods for processing carbon fiber bundles face issues such as hairiness, monofilament breakage, and crystallization of sizing agents, which affect the mechanical properties and processability of the composite materials.
Method used
A method involving coating a carbon fiber bundle with a sizing agent containing a thermoplastic resin, grafting a modified monomer onto the resin, drying with hot air, and then heating with infrared light to a temperature higher than the melting point of the thermoplastic resin but lower than that of the modified monomer.
Benefits of technology
This method improves the bundling property, reduces hairiness, and precisely controls the stiffness of the carbon fiber bundles, enhancing their mechanical properties and processability.
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