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Manufacture method of reinforced wood ceramic

A technology of wood ceramics and reinforcing materials, applied in the field of wood ceramics preparation, can solve the problems of low electromagnetic shielding effect, cumbersome production process, deformation and cracks, etc. Effect

Inactive Publication Date: 2008-12-17
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor mechanical strength, easy deformation and cracks, low electromagnetic shielding effect and cumbersome production process of existing wood ceramics, and provide a preparation method of reinforced wood ceramics
The purpose of the present invention is to solve the problems of poor mechanical strength, easy deformation and cracks, low electromagnetic shielding effect and cumbersome production process of existing wood ceramics, and provide a preparation method of reinforced wood ceramics

Method used

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  • Manufacture method of reinforced wood ceramic

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Effect test

specific Embodiment approach 1

[0007] Specific embodiment one: this embodiment is realized through the following steps: (1) Resin impregnation: put wood fiber or wood powder into the phenolic resin that is 5%-50% by mass percentage to completely soak, and dry to moisture content lower than 25%; (2) Reinforcement material compounding: take 5-50 parts of at least 100 mesh reinforcement materials per 100 parts of absolute dry wood fiber or absolute dry wood powder by weight, and mix evenly with wood fiber or wood powder impregnated with phenolic resin ; (3) Hot press forming: hot pressing at 130°C-200°C, 1.0MPa-8.0 MPa, and keep for 1-20min; (4) Sintering: a. Vacuum sintering: put the formed semi-finished product into vacuum sintering In the furnace, evacuate to an absolute pressure below 10 4 Pa or b. Nitrogen protection sintering: Put the formed semi-finished product into the sintering furnace, fill it with nitrogen, and the pressure is normal pressure; then heat it to 600-2500°C at an average heating rate o...

specific Embodiment approach 2

[0008] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step (1), wood fiber or wood flour is put into the phenolic resin whose mass percentage is 15%-35%.

specific Embodiment approach 3

[0009] Specific embodiment three: the difference between this embodiment and specific embodiment one is: in step (1), wood fiber or wood powder is put into the phenolic resin whose mass percentage is 25%.

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Abstract

It relates to an intensified wood ceramics. It solves the issues of existing wood ceramics like mechanics strength difference, easy of deformation and crack, low electromagnetic barrier and complicated production process. It dips the wood fiber or powder to formaldehyde-phenol resin and dry with water content less than 25%, intensifying the material composition by mixing the material with dipped wood fibers, heat compression in 130DEG C-200DEG C and 1.0MPa-8.0MPa for 1-20min, using vacuum or nitrogen protective sintering to get the intensified ceramics. The produced ceramics enjoys high anti wearing features and mechanic strength, difficult to deform and crack, good in electromagnetic barrier and simple in process.

Description

technical field [0001] The invention relates to a preparation method of wood ceramics. Background technique [0002] Wood ceramics is a new material made by efficiently utilizing the "three leftovers" of wood, which can promote the utilization of wood and benefit environmental protection. In recent years, it has attracted more and more attention from researchers. However, the wood ceramics prepared by the existing technology have poor mechanical strength, are prone to deformation and cracks, have low electromagnetic shielding effect, and the production process is cumbersome. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method of reinforced wood ceramics in order to solve the problems of poor mechanical strength, easy deformation and cracks, low electromagnetic shielding effect and cumbersome production process of existing wood ceramics. The present invention is realized through the following steps: (1) resin impregnat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/10B27N3/02B27N3/04B27N3/18
Inventor 李坚李淑君
Owner NORTHEAST FORESTRY UNIVERSITY