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Nano-silver aqueous solution and application method for applying nano-silver aqueous solution to technical wood

A nano-silver and aqueous solution technology, applied in the field of nano-materials, can solve the problems of poor effect, stability and dispersibility to be improved, and achieve the effect of uniform particles, resistance to invasion, stability and good dispersibility

Active Publication Date: 2014-05-28
DEHUA TB NEW DECORATION MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CNC101318224B (2010-8-25) discloses a preparation method of nano-silver aqueous solution, but the effect of this nano-silver aqueous solution applied to science and technology wood is not good, and its stability and dispersibility need to be improved

Method used

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  • Nano-silver aqueous solution and application method for applying nano-silver aqueous solution to technical wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of nano silver:

[0038] The sodium dodecylsulfonate solution is added to the silver nitrate aqueous solution to obtain a mixed solution, and the molar ratio of sodium dodecylsulfonate to silver nitrate is 2:1;

[0039] Heat the mixture to 45°C, add dicyclohexane-18-crown-6 and sodium borohydride to the mixture while stirring, heat to 70°C, and keep stirring for 5 minutes; dicyclohexane-18-crown The molar ratio of -6 to silver nitrate is 1:1; the molar ratio of sodium borohydride to silver nitrate is 0.5:1, and the pH value is controlled to be 8 to obtain nano silver.

[0040] Preparation of nano silver aqueous solution:

[0041] Dissolve in deionized water with deionized water as solvent, nano silver as solute, acrylic resin as complexing agent and stabilizer in deionized water, then add dispersant and first reducing agent to form a solution;

[0042] The dispersant is triethanolamine, and the mass content in the solution is 1%; the first reducing agent i...

Embodiment 2

[0048] Preparation of nano silver:

[0049] The sodium dodecylsulfonate solution is added to the silver nitrate aqueous solution to obtain a mixed solution, and the molar ratio of sodium dodecylsulfonate to silver nitrate is 3:1;

[0050] Heat the mixture to 55°C, add dicyclohexane-18-crown-6 and potassium borohydride to the mixture while stirring, heat to 85°C, and keep stirring for 8 minutes; dicyclohexane-18-crown The molar ratio of -6 to silver nitrate is 1-2:1; the molar ratio of potassium borohydride to silver nitrate is 0.5-1:1, and the pH value is controlled to be 8-9 to obtain nano silver.

[0051] Preparation of nano silver aqueous solution:

[0052]Using deionized water as solvent, nano silver as solute dissolved in deionized water, acrylic resin as complexing agent and stabilizer dissolved in deionized water, then adding dispersant and reducing agent to form a solution;

[0053] The dispersant is triethanolamine, the mass content in the solution is 1-3%; the firs...

Embodiment 3

[0059] Preparation of nano silver:

[0060] The sodium dodecylsulfonate solution is added to the silver nitrate aqueous solution to obtain a mixed solution, and the molar ratio of sodium dodecylsulfonate to silver nitrate is 2.5:1;

[0061] Heat the mixture to 50°C, add dicyclohexane-18-crown-6 and sodium metaphosphate to the mixture while stirring, heat to 75°C, and keep stirring for 6 minutes; dicyclohexane-18-crown The molar ratio of -6 to silver nitrate is 1.5:1; the molar ratio of sodium metaphosphate to silver nitrate is 0.8:1, and the pH value is controlled to be 8.5 to obtain nano silver.

[0062] Preparation of nano silver aqueous solution:

[0063] Using deionized water as solvent, nano silver as solute dissolved in deionized water, acrylic resin as complexing agent and stabilizer dissolved in deionized water, then adding dispersant and reducing agent to form a solution;

[0064] The dispersant is triethanolamine, and the mass content in the solution is 2%; the fir...

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Abstract

The invention relates to the field of nano materials, in particular to a nano-silver aqueous solution and an application method for applying the nano-silver aqueous solution to technical wood. According to the aqueous solution, deionized water is used as a solvent, nano-silver is used as a solute and dissolves in the deionized water, acrylic resin is used as a complexing agent and a stabilizing agent and dissolves in the deionized water, meanwhile a dispersing agent and a first reducing agent are added to the deionized water, and then the solution is formed, wherein the dispersing agent is triethanolamine, the first reducing agent is a hydrous ammonia aqueous solution, the concentration of nano-silver ranges from 50 ppm to 150 ppm, and the mass content of acrylic resin in the solution ranges from 1% to 10%. The application method includes the steps that the technical wood is fed to a vacuum tank filled with the nano-silver aqueous solution, and the vacuum tank is pumped until the vacuum degree ranges from -0.05 MPa to -0.01 MPa for 15 min to 20 min; pressure application is conducted, and pressure is applied to 0.2 MPa to 0.5 MPa for 18 min to 28 min; eventually, microwave processing is conducted for 1 min to 3 min, the microwave frequency ranges from 300 MHz to 950 MHz, and then the technical wood is taken out for drying. The nano-silver aqueous solution is good in stability and dispersibility, nano-silver can be more effectively permeated into the technical wood, and mold is fully defended.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a nano silver aqueous solution and a method for using the nano silver solution in technology wood. Background technique [0002] Metal nanomaterials are an important branch of nanomaterials, represented by precious metals gold, silver, and copper, among which nano-silver has received the most attention because of its broad application prospects. Nano-silver can be used in many ways: adding a small amount of nano-silver to chemical fiber can improve some properties of chemical fiber products and make it have a strong bactericidal ability; doping an appropriate amount of nano-silver in the silicon oxide film can make The glass coated with this film has certain photoluminescence. Therefore, nano-silver has broad application prospects in the fields of antibacterial materials, high-efficiency catalysts, lubricants, light-absorbing materials, coatings, sensors, conductive pastes, high-per...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00B27K5/04B27K3/08
Inventor 詹先旭沈金祥刘元强杨勇
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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