A kind of preparation method of using geothermal water to construct superhydrophobic layer on bamboo/wood surface

A wood surface, geothermal water technology, applied in wood impregnation, wood treatment, wood impregnation, etc., can solve the problems of dimensional deformation, discoloration, decay, etc., and achieve the effect of low production cost, good environmental protection, and good hydrophobic performance

Active Publication Date: 2020-07-10
桂东众意竹木开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Bamboo and wood are natural, environmentally friendly and renewable materials that are widely used in various fields of human life. Due to their strong moisture absorption and water absorption characteristics, bamboo and wood are easy to cause their size deformation, decay, discoloration, etc., affecting their use value and restricting their use. scope

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A preparation method utilizing geothermal water to build a hydrophobic layer on the surface of bamboo / wood, comprising the following steps:

[0018] 1) bamboo / wood drying;

[0019] 2) NaOH solution treatment;

[0020] 3) Glycidyl methacrylate solution impregnation and curing;

[0021] 4) Impregnation in calcium chloride solution;

[0022] 5) Calcium carbonate crystal deposition;

[0023] 6) Immersion in geothermal water solution;

[0024] 7) Aragonite-type calcium carbonate layer crystal structure.

[0025] The steps 1) 1) Bamboo / wood drying: dry the bamboo / wood to a moisture content of 6-8%, then ultrasonically clean with absolute ethanol for 8-15 minutes, and finally vacuum-dry at 102±3°C until the quality is constant , and put it into a vacuum desiccator for subsequent use; the bamboo / wood refers to processed bamboo chips, bamboo recombined wood, wood squares or wood veneer substrates.

[0026] Step 2) NaOH solution treatment: put the bamboo / wood treated in ste...

Embodiment 1

[0033] A preparation method utilizing geothermal water to construct a super-hydrophobic layer on the surface of moso bamboo, comprising the following steps:

[0034] (1) Dry the moso bamboo wood to a moisture content of 6%, then ultrasonically clean it with absolute ethanol for 8 minutes, and finally vacuum-dry it at 102±3°C until the quality is constant, and put it in a vacuum desiccator for later use.

[0035] (2) Put the moso bamboo treated in step (1) into a NaOH solution with a concentration of 5% and heat it at 80°C for 30 minutes, then wash the surface with distilled water for 6 times to remove the remaining NaOH solution on the surface, and then put it into vacuum drying Dry in oven at 80°C for 24h.

[0036] (3) Put a certain amount of glycidyl methacrylate (GMA) in ethanol to prepare a solution of glycidyl methacrylate with a concentration of 1%. After stirring evenly, put the moso bamboo in step (2) into Put it into the glycidyl methacrylate solution, soak it for 2 ...

Embodiment 2

[0042] A preparation method utilizing geothermal water to construct a super-hydrophobic layer on the surface of birch, comprising the following steps:

[0043] (1) Dry the birch to a moisture content of 8%, then ultrasonically clean it with absolute ethanol for 10 minutes, and finally vacuum-dry it at 102±3°C until the quality is constant, and put it in a vacuum desiccator for later use.

[0044] (2) Put the birch treated in step (1) into a NaOH solution with a concentration of 3% and heat it at 80°C for 45 minutes, then wash the surface with distilled water for 6 times to remove the residual NaOH solution on the surface, and then put it into a vacuum drying oven Dry at 100°C for 24 hours.

[0045] (3) Put a certain amount of glycidyl methacrylate (GMA) in ethanol to prepare a glycidyl methacrylate solution with a concentration of 3%. After stirring evenly, put the birch in step (2) into Immerse in the glycidyl methacrylate solution for 4 hours, wipe off the excess glycidyl m...

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Abstract

The invention relates to a preparation method for constructing a super-hydrophobic layer on the surface of bamboo / wood by using geothermal water. Firstly, the lignin on the surface of bamboo / wood is treated with NaOH solution, so that the hydroxyl group is exposed on the surface as much as possible, and then it is immersed in methacrylic acid to shrink React in a glyceride solution, and finally deposit calcium carbonate crystals on the surface of bamboo and wood by hydrothermal method, and combine the low surface energy material polydimethylsiloxane to construct an aragonite calcium carbonate surface layer with hydrophobic function on the surface of bamboo / wood. Advantages: 1) NaOH solution is used to remove the lignin components on the surface of bamboo / wood, so that the hydroxyl groups in bamboo / wood are exposed on the surface as much as possible, which is beneficial to the next reaction. 2) Using GMA as the coupling agent, the epoxy group reacts with the hydroxyl group to fix it on the bamboo / wood surface, and the carboxyl group reacts with the Ca 2+ Formation of complexes, by regulating the carboxyl group and Ca 2+ The complexes formed control the growth crystal form and morphology of calcium carbonate. 3) Environmental protection, good biocompatibility, low production cost, and good hydrophobicity.

Description

technical field [0001] The invention relates to a preparation method for constructing a super-hydrophobic layer on the surface of bamboo / wood by using geothermal water, and belongs to the technical field of bamboo and wood processing. Background technique [0002] Bamboo and wood are natural, environmentally friendly and renewable materials that are widely used in various fields of human life. Due to their strong moisture absorption and water absorption characteristics, bamboo and wood are easy to cause their size deformation, decay, discoloration, etc., affecting their use value and restricting their use. scope. There are a large number of superhydrophobic surfaces in nature, and people realize that this surface characteristic will have broad application prospects in the fields of waterproof and moisture-proof, liquid transportation, and self-cleaning. Therefore, superhydrophobicity is gradually introduced into the field of bamboo and wood surface functional modification, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/02B27K3/32B27K3/50B27K5/04
CPCB27K3/0207B27K3/0214B27K3/32B27K3/50B27K5/04
Inventor 何文杨阳徐朝晖吴波芦梦婷李泽许斌程大莉
Owner 桂东众意竹木开发有限公司
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