Preparation method for carbonized wood with super waterproof sterilization self-cleaning function

A carbonized wood and self-cleaning technology, applied in wood treatment, impregnating wood, manufacturing tools, etc., can solve the problem that carbonized wood does not have waterproof and anti-corrosion functions, and achieve the effect of solving water loss, maintaining lasting efficacy, and being environmentally friendly.

Inactive Publication Date: 2017-03-15
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that existing carbonized wood does not have waterproof and antiseptic

Method used

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  • Preparation method for carbonized wood with super waterproof sterilization self-cleaning function
  • Preparation method for carbonized wood with super waterproof sterilization self-cleaning function
  • Preparation method for carbonized wood with super waterproof sterilization self-cleaning function

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specific Embodiment approach 1

[0035] Specific implementation mode one: the preparation method of carbonized wood with ultra-waterproof, sterilizing and self-cleaning functions in this embodiment is carried out according to the following steps:

[0036] 1. Nanoparticle impregnation wood treatment:

[0037] ① Take 0.4-0.7 parts by mass of nano-titanium dioxide or nano-silver, disperse it in a mixture of 90-110 parts by mass of ethanol and deionized water, and disperse it ultrasonically in a 450-550 Hz ultrasonic instrument for 30-40 minutes;

[0038] ②Place the wood in the ultrasonic nanoparticle / ethanol-water mixed solution, then place it in a pressurized device, and impregnate it for 20 to 30 minutes under a pressure of 1 MPa;

[0039] ③Relieve the pressure, return to normal pressure, then take out the wood, wipe the surface of the wood, and place it at room temperature for later use;

[0040] 2. Hydrophobic treatment:

[0041] ① Mix 90-110 parts by mass of absolute ethanol and 0.01 parts by mass of hept...

specific Embodiment approach 2

[0051] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the diameter of nano-titanium dioxide in Step 1 is 5-50 nm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0052] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the diameter of the nano-silver in step 1 is 5-20 nm. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method for carbonized wood with a super waterproof sterilization self-cleaning function and relates to a wood modification method. The preparation method for the carbonized wood with the super waterproof sterilization self-cleaning function aims at solving the problems that existing carbonized wood does not have the waterproof and anti-corrosion functions. The method includes the steps that firstly, nanoparticle impregnation for wood treatment is performed, wherein the wood is placed into a nanoparticle/ethyl alcohol-water mixed solution subjected to supersonic treatment and is placed in a pressurizing device for impregnation, pressure is unloaded and returns to a normal pressure, then the wood is taken out, the surface of the wood is wiped clean, and the wood is placed in room temperature for standby use; secondly, hydrophobic treatment is performed, wherein the wood is placed in a fluorine-containing ethyl alcohol solution, a sealing reaction is performed, the wood is taken out, liquid on the surface of the wood is wiped thoroughly, and then the hydrophobic treatment is completed; and thirdly, carbonizing treatment is performed, and then the carbonized wood with a super hydrophobic sterilization self-cleaning function is obtained. The method is easy to operate, environment-friendly, low in cost and capable of integrating the super waterproof function and the sterilization function. The preparation method is used for modifying wood.

Description

technical field [0001] The invention relates to a wood modification method. Background technique [0002] Wood has natural water absorption and hygroscopic characteristics due to its honeycomb porous structure and hydroxyl-containing water-absorbing components (cellulose and hemicellulose), and has natural decay and degradation characteristics because its components are nutrients for the survival of microorganisms. , In the actual application process, defects such as deformation, warping, cracking, rot, and mold discoloration will occur, which seriously restricts the effective utilization of wood and reduces the use value. [0003] For this reason, people often use methods such as filling polymers in wood, painting the surface, acetylating wood with small molecular compounds, and carbonizing wood with high-temperature heat treatment to improve the dimensional stability of wood in water; various fungicides, anti-mold agents, etc. Improve the anti-corrosion and anti-mildew pr...

Claims

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Application Information

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IPC IPC(8): B27K3/08B27K3/50B27K3/52B27K5/00
CPCB27K3/08B27K3/50B27K3/52B27K5/0085
Inventor 李永峰董晓英
Owner SHANDONG AGRICULTURAL UNIVERSITY
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