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Preparation method of anticorrosive recombined bamboo material

A technology for recombining bamboo and bamboo bundles, applied in wood treatment, impregnating wood, manufacturing tools, etc., can solve the problems of chemical loss, environmental hazards, and affecting anti-mildew effects, etc., and achieve the effect of strengthening anti-corrosion performance and excellent anti-corrosion performance

Inactive Publication Date: 2020-05-29
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because bamboo is rich in nutrients such as starch and sugar, it is very easy to be attacked by microorganisms such as mold. The traditional anti-mold treatment method mainly uses anti-fungal agents to treat bamboo, and the loss of chemicals is more likely to occur during later use. This will cause certain harm to the environment; in addition, the presence of starch not only provides a nutrient substrate for the growth of mold, but also hinders the penetration of antifungal agents and other agents to a certain extent, thus affecting the antifungal effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of antiseptic recombined bamboo material, comprising the following steps:

[0024] (1) Take moso bamboo with a diameter at breast height of 75-85mm and a bamboo wall thickness of 5-8mm, wash it, cut it and saw it, remove the bamboo green and bamboo yellow, and divide it into pieces with a length of 25mm and a thickness of 2mm Bamboo bundles for spare;

[0025] (2) Put the obtained bamboo bundles into water at 100°C for 4 hours, and then heat them with high-pressure steam until the color changes. During heating, the steam pressure is controlled at 0.3 MPa for 4 hours, and the pretreated bamboo bundles are obtained for use;

[0026] (3) Dry the pretreated bamboo bundles with hot air, control the temperature of the hot air to continuously rise to 80°C at a rate of 5°C / min, and take 6 hours as a drying cycle until the water content is 8%. After completion, immerse the bamboo bundles in Diluted into the phenolic resin glue whose solid content is 20% and...

Embodiment 2

[0029] A preparation method of antiseptic recombined bamboo material, comprising the following steps:

[0030] (1) Take moso bamboo with a DBH of 85-100mm and a bamboo wall thickness of 8-10mm, wash it, cut it and saw it, remove the bamboo green and bamboo yellow, and divide it into pieces with a length of 35mm and a thickness of 6mm Bamboo bundles for spare;

[0031] (2) Put the obtained bamboo bundles into water at 100°C for 5 hours, and then heat them with high-pressure steam until the color changes. During heating, the steam pressure is controlled at 0.35 MPa for 2 hours, and the pretreated bamboo bundles are obtained for use;

[0032] (3) Dry the pretreated bamboo bundles with hot air, control the temperature of the hot air to continuously rise to 80°C at a rate of 10°C / min, and take 8 hours as a drying cycle until the water content is 12%. After completion, immerse the bamboo bundles in Diluted into the phenolic resin glue with a molecular weight of 30% and a molecular ...

Embodiment 3

[0035] A preparation method of antiseptic recombined bamboo material, comprising the following steps:

[0036] (1) Take moso bamboo with a breast diameter of 85-95mm and a bamboo wall thickness of 6-8mm, wash it, cut it and saw it, remove the bamboo green and bamboo yellow, and divide it into pieces with a length of 30mm and a thickness of 4mm Bamboo bundles for spare;

[0037] (2) Put the obtained bamboo bundles into 100°C water and boil for 4 hours, then heat them with high-pressure steam until the color changes, control the steam pressure to 0.32MPa for 3 hours during heating, and obtain the pretreated bamboo bundles for use;

[0038] (3) Dry the pretreated bamboo bundles with hot air, control the temperature of the hot air to continuously rise to 80°C at a rate of 8°C / min, and take 7 hours as a drying cycle until the water content is 10%. After completion, immerse the bamboo bundles in In the phenolic resin glue that is diluted into the phenolic resin glue that the molecu...

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Abstract

The invention discloses a preparation method of an anticorrosive recombined bamboo material. The preparation method comprises the following steps of (1) taking moso bamboos, cleaning the moso bamboos,cutting off the moso bamboos, removing bamboo outer skin and tabasheer, and performing splitting to obtain bamboo bundles; (2) feeding the bamboo bundles into water to be boiled, and heating the bamboo bundles with high-pressure steam to obtain pretreated bamboo bundles; (3) conducting air drying on the pretreated bamboo bundles with hot air, soaking the pretreated bamboo bundles in phenolic resin glue, and performing paving and assembling in the grain direction; and (4) feeding the paved and assembled bamboo bundles into a mold for pressurizing and heating, and carrying out thermosetting molding. According to the preparation method, parameters of all the steps are scientifically and accurately controlled, nutritional ingredients beneficial to bacterial reproduction in the moso bamboos can be lost and pyrolyzed in the water boiling and high-pressure steam heating process, energy supply of putrefying bacteria is cut off, and the preservative effect is achieved; and meanwhile, the density of the recombined bamboos can be increased in the subsequent thermocuring process, the putrefied bacteria are difficult to permeate in the radial direction, the corrosion resistance of a recombinedbamboo material is enhanced again, and the obtained product has excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of forest product chemical industry, and in particular relates to a preparation method of an antiseptic recombined bamboo material. Background technique [0002] Reconstituted bamboo material is a kind of loose bamboo bundles that are loosened into a certain length, maintain the original arrangement of fibers and cross-linked with each other, and then dried, glued, and hot-pressed along the direction of the grain. , large size, and a new type of bamboo material with natural structure. This product has been developed and applied to outdoor floors, wall panels, and building structural materials. It has been loved by people in Europe, America, Australia and other countries. The most demanded product. [0003] Because bamboo is rich in nutrients such as starch and sugar, it is very easy to be attacked by microorganisms such as mold. The traditional anti-mold treatment method mainly uses anti-fungal agents to tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/10B27D3/00B27J1/00B27K3/02B27K3/38B27K5/00
CPCB27D1/10B27D3/00B27J1/00B27K3/0214B27K3/38B27K5/0085B27K2240/20
Inventor 蒋应梯庄晓伟潘炘王进于海霞张文福
Owner ZHEJIANG FORESTRY ACAD
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