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A preparation method of bamboo and wood mixed carbonized recombined composite board

A composite board and mixed carbon technology, which is applied in the pretreatment of molding materials, wood treatment, wood processing equipment, etc., to achieve the effects of improving physical and mechanical strength and weather resistance, increasing added value, and increasing board density

Inactive Publication Date: 2018-02-02
江西安竹科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is no report on the preparation method of using bamboo and wood processing residues to prepare boards for outdoor anti-corrosion structures through carbonization heat treatment, cold pressing and setting, and then high-temperature curing.

Method used

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  • A preparation method of bamboo and wood mixed carbonized recombined composite board

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Evenly blend waste wood veneer and bamboo processing residues at a mass ratio of 1:0.5, put them into a carbonization kiln, adjust the steam pressure in the carbonization kiln to 0.26MPa, and carbonize at a temperature of 190°C for 3 hours;

[0020] 2. After carbonization, take out the raw materials and put them into a drying kiln for drying. Adjust the drying temperature to 80°C and dry for 1 hour. The measured moisture content is 9.7%;

[0021] 3. After drying, put the bamboo-wood mixed material into the rosin-modified phenolic resin adhesive with a solid content of 20% to impregnate, add 3% fatty alcohol polyoxyethylene ether, stir evenly, and impregnate for 30 minutes;

[0022] 4. After impregnation, drain and dry in a drying kiln at 50°C for 1 hour, and the measured moisture content is 17.2%;

[0023] 5. After drying, put the bamboo-wood mixture into the pre-press mold, adjust the unit pressure of the press to 8MPa, and calculate the cold pressing time as 1.2min...

Embodiment 2

[0028] 1. Evenly blend waste wood veneer and bamboo processing residues at a mass ratio of 1:2, put them into a carbonization kiln, adjust the steam pressure in the carbonization kiln to 0.30MPa, and carbonize at 220°C for 5 hours;

[0029] 2. After carbonization, take out the raw materials and put them in a drying kiln for drying. Adjust the drying temperature to 100°C and dry for 2 hours. The measured moisture content is 7.2%;

[0030] 3. After drying, impregnate the bamboo-wood mixed material in a rosin-modified phenolic resin adhesive with a solid content of 30%, add 8% fatty alcohol polyoxyethylene ether, stir evenly, and impregnate for 60 minutes;

[0031] 4. Drain after impregnation, and dry in a drying kiln at 60°C for 2 hours, and the measured moisture content is 12.4%;

[0032] 5. After drying, put the bamboo-wood mixture into the mold of the pre-press, adjust the unit pressure of the press to 10MPa, and calculate the cold pressing time as 1.6min / mm board thickness; ...

Embodiment 3

[0037] 1. Evenly blend waste wood veneer and bamboo processing residues at a mass ratio of 1:0.8, put them into a carbonization kiln, adjust the steam pressure in the carbonization kiln to 0.27MPa, and carbonize at 200°C for 3.5 hours;

[0038] 2. After carbonization, take out the raw materials and put them in a drying kiln for drying. Adjust the drying temperature to 85°C and dry for 1.2 hours. The measured moisture content is 9.2%;

[0039] 3. After drying, impregnate the bamboo-wood mixed material into a rosin-modified phenolic resin adhesive with a solid content of 22%, add 4% sodium dioctyl sulfonate maleate, stir well, and impregnate for 35 minutes ;

[0040] 4. After impregnation, drain and dry in a drying kiln at 52°C for 1.2 hours, and the measured moisture content is 16.8%;

[0041] 5. After drying, put the bamboo-wood mixture into the pre-press mold, adjust the unit pressure of the press to 8.5MPa, and calculate the cold pressing time as 1.3min / mm board thickness; ...

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Abstract

The invention discloses a preparation method of bamboo wood blending charring recombination composite board square stocks. The method comprises the following steps of (1) charring treatment; (2) drying treatment; (3) immersion treatment; (4) secondary drying treatment; (5) forming treatment; (6) curing treatment. Bamboo wood surplus materials by processing are subjected to high temperature carbonization treatment, so that the hemicellulose is degraded, the concentration of hydrophilic group-hydroxy in materials is reduced, meanwhile, nutrient substance required by corrosion fungus is also degraded, and the corrosion resistance performance of the materials is improved; through the immersion of a weather ability cementing compound, and high-pressure sizing, the board density is increased, and the physical and mechanical properties and the weather ability of boards are also improved. The composite board square stocks prepared by the method can replace solid wood square stocks, and are processed to form floor substrates, furniture boards, landscape gallery road boards, beam columns for architectural structures and the like through ways of slicing, tenoning, finger joint and the like, so that the additional value of waste resources by bamboo wood processing is improved.

Description

technical field [0001] The invention belongs to the technical field of utilization of bamboo and wood processing residues, and specifically relates to the comprehensive utilization of bamboo and wood processing residues, carbonization, cold pressing, shaping and high-temperature curing to prepare composite board squares, and then process them into floor boards by means of planing, tenoning, and finger jointing. Substrates, furniture panels, landscape plank boards, beams and columns for building structures, etc. Background technique [0002] At present, most of the outdoor landscape plank boards, building structure materials and outdoor floors use anti-corrosion treated logs, recombined bamboo and laminated veneer lumber. As CN1513650A discloses "preservative wood and its treatment method", will contain CrO 3 , CuO, As2O5 CCA-C preservatives are injected into the tank body for sterilization and anticorrosion, so that the wood absorbs and solidifies into antiseptic wood. CN1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/06B27K5/04B27N3/08
CPCB27M1/06B27N1/00B27N1/02B27N3/08B27N3/18
Inventor 贺磊钟三明王玉
Owner 江西安竹科技有限公司