Preparation method of high-toughness wood veneer
By combining hemicellulose removal treatment and nanocellulose vacuum impregnation with hot pressing densification technology, the problem of low strength in thin wood veneers has been solved, achieving the preparation of wood veneers with high strength, high toughness, and flexibility, which are suitable for high-end applications and reduce production costs.
CN120839897APending Publication Date: 2025-10-28INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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Patent Information
- Application Number
- CN202511032918.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-10-28
AI Technical Summary
Technical Problem
Existing technologies for preparing thin wood veneers suffer from low strength, high consumption, and an inability to simultaneously achieve high strength, high toughness, and intrinsic flexibility, thus limiting the application of wood veneers in high-end applications.
Method used
After undergoing hemicellulose removal treatment, the wood veneer is vacuum impregnated in a nanocellulose solution, followed by hot pressing to form micron-level voids and tightly interwoven fibers, thus producing high-strength and tough wood veneer.
Benefits of technology
It significantly improves the tensile and bending strength of wood veneer, reduces costs, and makes it a potential sustainable alternative for high-end applications, suitable for mass production and environmentally friendly.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention belongs to the technical field of materials, and provides a preparation method of a high-toughness veneer, which comprises the following steps: chemical pretreatment: carrying out hemicellulose removal treatment on a log veneer, washing the log veneer clean, carrying out nano reinforcement, putting the pretreated veneer into a nano cellulose solution, carrying out vacuum impregnation and hot-pressing compaction treatment, putting the nano-reinforced veneer into a hot press, and carrying out hot-pressing compaction treatment on the nano-reinforced veneer; and performing hot-pressing compaction treatment to obtain the high-toughness wood veneer with high toughness and tensile strength. According to the method, a hemicellulose removal mode is adopted, micron-sized gaps are formed in the interlayer of wood cell walls, then the fibers are impregnated for reinforcement and subjected to hot-pressing compaction, then the fibers are tightly interwoven to form the high-toughness wood veneer, the preparation method is simple and easy to implement, the raw materials are easy to obtain, and the method is suitable for large-scale production.
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