Bamboo wood with mildew-proof performance and modification method thereof

A bamboo material and high-performance technology, which is applied in the direction of impregnating wood, wood impregnation, and manufacturing tools, can solve the problems of losing the color and texture of bamboo, dark color of modified bamboo, and large amount of modified reagents. The preparation method is easy to operate and low cost. Low, good anti-mold effect

Active Publication Date: 2022-06-28
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the amount of modifying reagent is large, the heat treatment temperature is high, the color of the modified bamboo obtained under the catalysis of copper is dark, and the original color and texture of bamboo are lost.

Method used

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  • Bamboo wood with mildew-proof performance and modification method thereof
  • Bamboo wood with mildew-proof performance and modification method thereof
  • Bamboo wood with mildew-proof performance and modification method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation: (1) Bake the Moso bamboo sample (50mm*20mm*5mm) to an absolutely dry state (that is, the free water and bound water in the bamboo are completely removed) to obtain an absolutely dry Moso bamboo sample, which is sealed for use;

[0031] (2) prepare 500 mL of N-methylol acrylamide aqueous solution with a mass concentration of 2%, add ammonium persulfate as a catalyst (the mass of ammonium persulfate is 1% of the added mass of N-methylol acrylamide) and stir A clear and transparent modified solution was obtained.

[0032] (3) Completely immerse the dry bamboo sample in the modified solution, vacuum for 1 hour, then pressurize to 0.8MPa, and maintain the pressure for 3 hours. Continue to soak at atmospheric pressure for 8h after depressurization. After taking it out, it was placed in an oven, and polymerized at 80° C. for 12 hours; after polymerization, it was dried to absolutely dry at 105° C. to obtain a modified bamboo material, which was a bamboo materi...

Embodiment 2

[0035] 1. Preparation: (1) Bake the Moso bamboo sample (50mm*20mm*5mm) to an absolutely dry state (that is, the free water and bound water in the bamboo are completely removed) to obtain an absolutely dry Moso bamboo sample, which is sealed for use;

[0036] (2) prepare 500mL of N-methylol acrylamide aqueous solution with a mass concentration of 4%, add ammonium persulfate as a catalyst (the quality of ammonium persulfate is 1% of the added N-methylol acrylamide mass), stir A clear and transparent modified solution was obtained.

[0037] (3) Completely immerse the dry bamboo sample in the modified solution, vacuum for 1 hour, then pressurize to 0.8MPa, and maintain the pressure for 3 hours. After depressurization, it was soaked at normal pressure for 8 hours, placed in an oven, and polymerized at 80 °C for 8 hours; after polymerization, it was dried at 105 °C to dryness to obtain modified bamboo, which is bamboo with anti-mildew properties.

[0038] 2. Anti-mildew test: The a...

Embodiment 3

[0040] 1. Preparation: (1) Bake the Moso bamboo sample (50mm*20mm*5mm) to an absolutely dry state (that is, the free water and bound water in the bamboo are completely removed) to obtain an absolutely dry Moso bamboo sample, which is sealed for use;

[0041] (2) prepare 500mL N-methylol acrylamide aqueous solution whose mass concentration is 6%, add ammonium persulfate (the quality of ammonium persulfate is 1% of the added N-methylol acrylamide mass) as a catalyst, stir A clear and transparent modified solution was obtained.

[0042] (3) Completely immerse the dry bamboo sample in the modified solution for 2 days under normal pressure. The sample was taken out and placed in an oven, and polymerized at 65°C for 12 hours; after polymerization, it was dried at 105°C to dryness to obtain modified bamboo, which is bamboo with anti-mold properties.

[0043] 2. Anti-mildew test: The anti-mildew effect of the bamboo with anti-mildew properties obtained in this example is 0 (the test ...

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Abstract

The invention belongs to the technical field of bamboo wood modification, and discloses a bamboo wood with mildew-proof performance and a modification method thereof.The bamboo wood with mildew-proof performance is prepared by the steps that the bamboo wood is soaked in a modification solution prepared from acrylamide derivative monomers and a catalyst, and the acrylamide derivative monomers permeate into the bamboo wood; and carrying out in-situ polymerization reaction at 60-90 DEG C, and then carrying out heat treatment at 105-140 DEG C, thereby obtaining the The bamboo material with the mildew-proof performance retains the appearance color and texture of the bamboo material, does not release pungent smell, and has good mildew-proof performance. According to the method, the required modification solution is low in concentration, reaction conditions are mild, the problem of mildewing in the storage, transportation and use processes of the wood and bamboo wood can be solved, the defect of economic loss caused by quality reduction of the bamboo wood due to mildewing is overcome, and the method is wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of bamboo modification, and more particularly, relates to a bamboo with anti-mold performance and a modification method thereof. Background technique [0002] Bamboo is widely used in construction, papermaking, textiles, furniture and other fields due to its advantages of being renewable, fast-growing, high-strength, high-yield, and easy to process. However, the content of starch, protein, sugar and fat in bamboo is relatively high, which objectively provides nutrients for the growth and reproduction of molds, which makes bamboo prone to mildew during processing, transportation and use. Bamboo mildew destroys the appearance, color and natural texture of bamboo and various bamboo products, and seriously affects the use value and economic value of bamboo and various bamboo products. Therefore, the anti-mildew treatment of bamboo is of great significance to its industrial development. [0003] Patent CN104552...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K9/00B27K3/15B27K3/36B27K3/08B27K3/02B27K5/00C08F120/58
CPCB27K9/002B27K3/15B27K3/36B27K3/08B27K3/025B27K5/0085C08F120/58B27K2240/20
Inventor 章伟伟孙杰宇胡传双林秀仪
Owner SOUTH CHINA AGRI UNIV
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