Bamboo-wood composite board and preparation method thereof

A bamboo-wood composite and board technology, which is applied to wood processing appliances, wood veneer joining, manufacturing tools, etc., can solve the problems of restricting the processing and utilization of bamboo-wood composite boards, poor dimensional stability of composite boards, and reduced service life, etc. Achieve the effect of low dip stripping rate, low weight loss rate and enhanced corrosion resistance

Inactive Publication Date: 2010-06-23
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned bamboo-wood composite board is mainly formed by simply forming bamboo and wood, gluing and hot-pressing, and the composite board made has poor dimensional stability and poor anti-corrosion effect, which leads to a decline in product quality and a reduction in service life, which limits the use of bamboo and wood. Processing and Utilization of Composite Plates

Method used

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  • Bamboo-wood composite board and preparation method thereof
  • Bamboo-wood composite board and preparation method thereof
  • Bamboo-wood composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Preparation of anti-corrosion bamboo board

[0046] 1) Vacuum treatment

[0047] The moso bamboo strips are put into the airtight impregnation tank, and pressed with heavy objects, then the moso bamboo strips in the impregnation tank are vacuumized, wherein the moisture content of the moso bamboo strips is 12%, and the relative pressure in the vacuum treatment process is -0.095MPa, vacuum treatment time is 1 hour (h);

[0048] 2) Pressure impregnation treatment

[0049] Introduce ACQ-B preservative (i.e. ammonia-soluble quaternary ammonium copper, water-soluble preservative compounded by quaternary ammonium salt and copper salt) into the dipping tank while maintaining a vacuum state, after the preservative completely submerges the moso bamboo strips in the tank Remove the vacuum, then utilize the air compressor to increase the pressure in the impregnation tank, and pressurize the bamboo, wherein the absolute pressure in the pressurization process remains 10atm (10 ...

Embodiment 2

[0071] In addition to the pressure treatment step in the process of preparing anti-corrosion bamboo boards, the anti-corrosion agent used in the mass is CuAz-2 (i.e. copper azole-2 type anti-corrosion agent, the main components are copper, tebuconazole, ammonia) with a percentage concentration of 0.5%; The aging time in the blank and hot pressing steps is 10min, the hot pressing pressure is 2MPa, the hot pressing time is 15min, and the hot pressing temperature is 140°C;

[0072] In the process of preparing heat-treated wood boards, the relative pressure of the wood heat treatment step is -0.07MPa, the heat treatment temperature is 240°C, and the heat treatment time is 10h; in the humidity control step, water vapor at 120°C is introduced to make the relative humidity in the box 15%. The moisture content of the humidity-adjusting heat-treated eucalyptus plank obtained is 10%, and the thickness is 20mm;

[0073] During the preparation of the bamboo-wood composite board, the aging...

Embodiment 3

[0076] In addition to using bamboo strips in the process of preparing anticorrosive bamboo boards, the relative pressure in the tank in the vacuum treatment step is -0.08MPa, and the vacuum treatment time is 3h; the preservative in the pressure treatment step is 2.0% by mass percent CuAz-1 (that is, copper azole-1 type preservative, the main components are copper, boric acid, tebuconazole), the absolute pressure of the pressure treatment is maintained at 8atm, and the treatment time is 3h; The time is 5min, the hot pressing pressure is 3MPa, the hot pressing time is 20min, and the hot pressing temperature is 80°C;

[0077] In the process of preparing heat-treated wood boards, fir wood boards are used. In the wood drying treatment step, the fir wood is gradually heated from 50°C to 100°C and dried to constant weight; the relative pressure of the wood heat treatment step is -0.08MPa, and the temperature of the preheating treatment is 125°C. , the preheating treatment time is 30m...

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Abstract

The invention relates to an anti-corrosion bamboo-wood composite board and a preparation method thereof. The preparation method of the anti-corrosion bamboo-wood composite board comprises the following steps: firstly preparing anti-corrosion bamboo strips and heat-treated wood; next, respectively assembling and compressing the anti-corrosion bamboo strips and the heat-treated wood into anti-corrosion bamboo wood and a heat-treated sheet material; and then carrying out assembling and hot compression on the anti-corrosion bamboo wood and the heat-treated sheet material to obtain the anti-corrosion bamboo-wood composite board. The bamboo-wood composite board prepared by the method of the invention has excellent corrosion resistance which reaches the corrosion resisting level specified in national standard GB/T13942.1-1992 Method for Laboratory Test of Natural Decay Resistance of Woods, and also has very high surface abrasion resistance and high mechanical strength which reach the national standards in GB/T 18103-2000 national composite floor.

Description

technical field [0001] The invention relates to a product formed by combining wood with other materials and a preparation method thereof, in particular to a wooden plywood and a preparation method thereof. Background technique [0002] my country is a country with poor forest resources. Especially when my country's economy enters the stage of rapid development, the demand for wood is increasing day by day. The overuse of forest resources, the sharp decrease of the total forest area and the implementation of natural forest protection projects have intensified the contradiction between wood supply and demand. Bamboo has the advantages of fast growth, early maturity, high strength, good toughness, and high hardness. It is an ideal raw material for engineering structural materials and can replace wood in many fields. Therefore, the development and utilization of bamboo resources is one of the effective ways to alleviate the contradiction between wood supply and demand. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/08
Inventor 刘君良赵荣军蒋明亮柴宇博秦韶山孙柏玲王雪花
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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