A carbon fiber-added wood-based panel

By using a layered gradient structure and covalent bonds, carbon fiber engineered wood panels have solved the problems of insufficient bending strength and low interfacial strength in existing technologies, thereby improving applicability and durability in high-load scenarios.

CN119928031BActive Publication Date: 2026-05-26LIAONING NIER KEDA ENVIRONMENTAL PROTECTION MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING NIER KEDA ENVIRONMENTAL PROTECTION MATERIAL CO LTD
Filing Date
2025-03-13
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, the bending strength of glass fiber or natural fiber reinforced artificial boards does not exceed 30 MPa, which is difficult to meet the needs of high load scenarios. In addition, they are easy to peel off in humid environments, have low interface strength, and high water absorption and expansion rate.

Method used

The carbon fiber engineered wood panel adopts a layered gradient structure, with the surface layer and transition layer having a higher carbon fiber content than the core layer. It is bonded by covalent bonds formed through modified urea-formaldehyde resin and benzoyl peroxide catalyst. Short carbon fibers are oriented in a specific direction and combined with electrostatic field or airflow guidance technology.

Benefits of technology

It improves the bending strength and interfacial strength of the board, reduces the water absorption and swelling rate, and is suitable for high-strength furniture and industrial applications, while enhancing wear resistance and durability.

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Abstract

This invention relates to the field of wood composite materials and discloses a carbon fiber-reinforced engineered wood panel comprising a wood substrate, chopped carbon fibers, and an adhesive. The panel has a layered gradient structure, comprising a surface layer, a transition layer, and a core layer. The surface layer has a higher carbon fiber content than the transition layer, and the transition layer has a higher carbon fiber content than the core layer. The chopped carbon fibers are 1 mm to 10 mm in length and are arranged in a specific direction in both the surface and transition layers. The carbon fibers are covalently bonded to the wood substrate using an adhesive containing a catalyst. Through the gradient distribution of carbon fiber content from the surface layer to the core layer, this structure provides concentrated reinforcement at the stress surface while reducing the amount of internal carbon fiber, resulting in an overall weight reduction of approximately 15%. This differs from existing methods that use uniform fiber distribution and is suitable for applications requiring high strength, such as furniture load-bearing components and industrial pallets.
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