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Method for strengthening lamellar wood ceramic by using carbon fiber

A technology of wood ceramics and reinforcement layers, which is applied in the field of wood ceramics manufacturing and can solve problems such as easy deformation and poor toughness

Active Publication Date: 2014-10-01
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to address some of the above-mentioned problems, apply the bionic design idea of ​​layered composite materials to the research of wood ceramics, use thermosetting resins (such as phenolic resins, epoxy resins, furan resins) and wood powder (or other The powder of biomass materials, such as cotton stalks, rice husks, and straw) is used as the base material, and wood ceramics with a layered biomimetic structure that can partially maintain the natural structural characteristics of wood and other biomass materials are designed and prepared, and are reinforced with carbon fibers. To improve the problems of wood ceramics such as easy deformation, cracking, low strength, poor toughness and many structural defects, and finally improve the basic properties of wood ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Poplar wood was crushed to 40 mesh, dried to a moisture content of 8%, placed in a closed high-temperature carbonization furnace, heated to a temperature of 700 °C at a rate of 5 °C / min, kept for carbonization for 1 h, and then cooled with the furnace To room temperature, poplar wood carbon powder is obtained;

[0048] (2) Mix phenolic resin with a solid content of 50% and poplar wood toner with a mass ratio of 1:1, dry at 50 °C to a moisture content of 8%, and then place it in a 150 mm×150 mm In a square mold, cold pressed into a size of length × width × thickness 150 mm × 150 mm × 1 mm, density 0.4 g / cm 3 The sheet, obtains the sheet-like phenolic resin-carbonized poplar wood powder composite material;

[0049] (3) According to the method in step (2), press 20 pieces, the size is 150 mm x 150 mm x 1 mm in length x width x thickness, and the density is 0.4 g / cm 3 The phenolic resin-carbonized poplar wood powder composite material;

[0050] (4) Cut the 3K plain w...

Embodiment 2

[0063] (1) Crush the pine wood to 50 mesh, dry it to a moisture content of 8%, place it in a closed high-temperature carbonization furnace, raise the temperature to 700 °C at a speed of 5 °C / min, keep it carbonized for 1 h, and then cool it with the furnace to At room temperature, pine wood toner is obtained;

[0064] (2) Mix epoxy resin (without curing agent) and pine wood powder according to the mass ratio of 1:1.2, dry at 50 °C for 40 minutes, then add epoxy resin curing agent and stir thoroughly, place After 30 minutes, place it in a square mold of 150 mm×150 mm, and cold press it into a size of length×width×thickness 150 mm×150 mm×1.5 mm, with a density of 0.5 g / cm 3 The flakes were then dried and cured at 50°C for 50 h to obtain a sheet-like epoxy resin-carbonized pine powder composite material;

[0065] (3) According to the method in step (2), press 15 pieces, the size is length×width×thickness is 150 mm×150 mm×1 mm, and the density is 0.4 g / cm 3 Epoxy resin-carbonize...

Embodiment 3

[0079] (1) Chinese fir was crushed to 70 mesh, dried to 8% moisture content, placed in a closed high-temperature carbonization furnace, heated to 700 °C at a rate of 5 °C / min, kept for carbonization for 1 h, and then cooled with the furnace to At room temperature, fir toner is obtained;

[0080] (2) Mix furan resin (without curing agent) and Chinese fir toner at a mass ratio of 1:1.5, dry at 50 °C for 40 minutes, then add furan resin curing agent and stir thoroughly, and place for 40 minutes After placing it in a square mold of 150 mm×150 mm, it is cold-pressed into a size of length×width×thickness of 150 mm×150 mm×1.8 mm and a density of 0.5 g / cm 3 The flakes were then dried and cured at 50°C for 60 h to obtain a flake-like furan resin-carbonized fir powder composite material;

[0081] (3) According to the method in step (2), press 13 pieces, the size is 150 mm x 150 mm x 1.8 mm in length x width x thickness, and the density is 0.5 g / cm 3 Furan resin-carbonized wood powder ...

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Abstract

The invention discloses a method for strengthening lamellar wood ceramic by using carbon fiber. The method is characterized by comprising the following steps: by taking thermosetting resin and biomass material as base materials, crushing and pulverizing the biomass material into biomass carbon powder, mixing the biomass carbon powder with thermosetting resin to prepare a sheet-shaped thermosetting resin-biomass carbon powder composite material; then, preparing the sheet-shaped thermosetting resin-biomass carbon powder composite material into the carbon fiber-strengthened lamellar composite material with different thicknesses under a certain temperature and pressure; and finally, placing the carbon fiber-strengthened lamellar composite material into a high-temperature sintering furnace for hot-pressing and sintering to obtain the wood material with the carbon fiber-strengthened lamellar structure.

Description

technical field [0001] The invention relates to a method for preparing layered wood ceramics with carbon fiber reinforcement in the technical field of wood ceramics production. Background technique [0002] Wood ceramics, also referred to as wood ceramics, was first made by vacuum carbonization of wood impregnated with phenolic resin by Japanese scholars in 1990. Subsequently, porous carbon materials sintered from biomass materials impregnated with thermosetting resins are called woodceramics. Wood ceramics are light in weight, low in density, high in specific strength, and their structural properties are between traditional carbon and carbon fiber or graphite. They not only have good thermal, electromagnetic and tribological properties, but also because they can partially preserve the original attention to form and structure. After a series of treatments and processing, it can be widely used as super energy storage materials, lightweight armor materials, electromagnetic s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/622
Inventor 孙德林余先纯
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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