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A kind of high-strength weather-resistant bamboo composite material and manufacturing method thereof

A manufacturing method and technology of composite materials, applied in the direction of manufacturing tools, pretreatment of molding materials, wood impregnation, etc., can solve the problems of high brittleness and low flexural strength of recombined bamboo, and achieve excellent weather resistance, improved flexural strength, Avoid the effects of strength loss and mass loss

Active Publication Date: 2022-08-02
HUNAN TAOHUAJIANG BAMBOO SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the recombined bamboo produced by high-temperature heat treatment bamboo bundle unit has high brittleness and low bending strength, so it cannot be used in the field of structural engineering

Method used

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  • A kind of high-strength weather-resistant bamboo composite material and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The manufacturing method of a kind of high-strength weather-resistant bamboo composite material of the present embodiment specifically comprises the following steps:

[0043] 1) Initial pre-drying: use conventional hot water heat source drying method to dry the decomposed bamboo bundles to a moisture content of about 22%.

[0044]2) High pressure impregnation treatment: use alcohol-based modified solution to carry out high pressure impregnation treatment on pre-dried bamboo bundles to obtain impregnated bamboo bundles.

[0045] The specific steps are as follows: first put the bamboo bundles into the high-pressure impregnation treatment tank, close the closed door of the high-pressure impregnation treatment tank, open the vacuum valve, carry out pre-vacuum treatment, the vacuum degree is 0.07MPa, and keep it for 12min; the pre-vacuum treatment ends Then, inject the alcohol-based modification solution into the high-pressure immersion treatment tank to make the solution co...

Embodiment 2

[0061] The manufacturing method of a kind of high-strength weather-resistant bamboo composite material of the present embodiment specifically comprises the following steps:

[0062] 1) Initial pre-drying: Use conventional solar drying methods to dry the decomposed bamboo bundles to a moisture content of 25%.

[0063] 2) High pressure impregnation treatment: use alcohol-based modified solution to carry out high pressure impregnation treatment on pre-dried bamboo bundles to obtain impregnated bamboo bundles.

[0064] Specific steps are as follows:

[0065] The three-stage treatment process of pre-vacuum treatment-high-pressure impregnation treatment-post-vacuum treatment is adopted. The bamboo bundles are first put into the high-pressure impregnation treatment tank, the closed door of the high-pressure impregnation treatment tank is closed, the vacuum valve is opened, and the pre-vacuum treatment is carried out. , the vacuum degree is 0.08MPa, and it is maintained for 15min; af...

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Abstract

The invention discloses a manufacturing method of a high-strength and weather-resistant bamboo composite material, which specifically includes the following steps: S1, placing the dried decompressed bamboo bundles in an alcohol-based modification solution for high-pressure immersion treatment, and then placing them in a 100- Carry out curing treatment at a temperature of 130 ° C to obtain a cured bamboo bundle; S2, after drying the cured bamboo bundle at a temperature of 110 to 150 ° C, and then go through equilibration, dipping, drying, assembling and hot pressing Forming treatment to obtain a formed slab; S3, curing and machining the formed slab to obtain a high-strength weather-resistant bamboo composite material. The high-strength weather-resistant bamboo composite material prepared by the invention completely retains the original unit structure and mechanical strength of the bamboo.

Description

technical field [0001] The invention belongs to the manufacturing field of bamboo composite materials in the wood industry, relates to a manufacturing method of reconstituted bamboo materials, and in particular relates to a high-strength weather-resistant bamboo composite material and a manufacturing method thereof. Background technique [0002] Bamboo has the advantages of high vertical strength, rapid growth and short harvesting period. It is an important part of my country's forest resources. my country's bamboo resources rank first in the world in terms of species and volume, and it is known as the kingdom of bamboo. Vigorously developing bamboo resources is an important measure to alleviate the shortage of timber resources in my country, protect the ecological environment and meet people's living needs. However, compared with wood, bamboo has the disadvantages of high sugar content, easy mildew and perishability during use, which seriously restricts the application fiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/08B27N3/10B27N1/00B27K3/08B27K5/00B27K5/04B27K9/00B27K3/52
CPCB27D1/08B27N3/10B27N1/00B27K3/08B27K5/0085B27K5/04B27K9/002B27K3/52B27K2200/15B27K2240/20
Inventor 李贤军薛志成吴义强郝晓峰徐康杨喜李霞镇
Owner HUNAN TAOHUAJIANG BAMBOO SCI & TECH CO LTD