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
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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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