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Method for preparing temperature-resistance nano AgCl SOL

A nano and sol technology, applied in silver halide and other directions, can solve the problems of large consumption of silver fungicides and weak silver loading, and achieve the effect of high adsorption capacity.

Inactive Publication Date: 2006-10-25
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these silver loading methods are not firm in loading silver, and the consumption of silver bactericide is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First prepare a sodium chloride solution with a concentration of 0.01mol / L, measure the sodium chloride solution with a pipette, mix it with 1mol / L methylcellulose at a molar mass ratio of 1:2, and use a high-shear dispersing emulsifier Disperse evenly at 1000 rpm;

[0015] Heat the above solution to a certain temperature of 25°C, adjust the solution to a certain pH value of 5 with ammonia water or sulfuric acid, and at the same time add 0.1mol / LAgNO evenly at a rate of 0.01ml / min 3 and 0.09mol / L polyvinylpyrrolidone, the molar mass ratio of the two is 1:0.25. During the dropping process, the high-shear dispersing and emulsifying machine was used to uniformly disperse for 20 minutes at 1500 rpm. The prepared nano-sol was treated with ultrasonic wave for 1 hour, and measured according to the transmission electron microscope (TEM) method, the silver chloride sol with an average particle size of 20 nm was obtained.

Embodiment 2

[0017] First prepare a magnesium chloride solution with a concentration of 0.2mol / L, measure the magnesium chloride solution with a pipette, mix it with 0.01mol / L hydroxypropyl cellulose at a molar mass ratio of 1:1, and use a high-shear dispersing emulsifier at 400 Turn / min evenly dispersed;

[0018] Heat the above solution to a certain temperature of 100°C, adjust the solution to a certain pH value of 9 with ammonia water or sulfuric acid, and at the same time add 0.5mol / LAgNO evenly at a rate of 0.1ml / min 3 and 0.01mol / L ethanol, the molar mass ratio of the two is 1:10. During the dropping process, the high-shear dispersing emulsifier was used to uniformly disperse for 10 minutes at 1000 rpm. The prepared nano-sol was treated with ultrasonic waves for 1 hour, and measured according to the transmission electron microscope (TEM) method to obtain a silver chloride sol with an average particle size of 50 nm.

Embodiment 3

[0020] First prepare a ferric chloride solution with a concentration of 0.1mol / L, measure the ferric chloride solution with a pipette, mix it with 2mol / L ethanol at a molar mass ratio of 1:4, and use a high-shear dispersing emulsifier to 800 rpm / min for uniform dispersion;

[0021] Heat the above solution to a certain temperature of 60°C, adjust the solution to a certain pH value of 2 with ammonia water or sulfuric acid, and at the same time add 0.05mol / LAgNO evenly at a rate of 0.05ml / min 3 and 2mol / L polyvinylpyrrolidone, the molar mass ratio of the two is 1:5. During the dropping process, the high-shear dispersing emulsifier was used to uniformly disperse for 45 minutes at 1200 rpm. The prepared nano-sol was treated with ultrasonic waves for 1 hour, and measured according to the transmission electron microscope (TEM) method to obtain a silver chloride sol with an average particle size of 70 nm.

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Abstract

The invention discloses a method for preparing high temperature-resistant nano AgCl sol, comprising the steps of: a. preparing soluble chloride solution 0.01-0.2 mol / L, mixing it with dispersant 0.01-2 mol / L in the molar mass ratio of 1 to (1-4), and dispersing uniformly at a speed of 400-1000 r / min; b. heating the prepared solution to 25 deg.C-100 deg.C, regulating pH value of solution to 2-9, uniformly dropping in AgNO5 0.05-0.5mol / L and dispersant 0.01-2mol / L in the molar mass ratio of 1 to (0.25-10) at a speed of 0.01-0.1 ml / min, and dispersing uniformly at 1000-1500 r / min for 10-45 min, and processing the prepared nano sol with ultrasonic for 1 h. And its beneficial effect: at a certain temperature, the absorption of nano silver sol on fabric is high, and the nano silver sol is firm to absorb and uneasy to wash out.

Description

technical field [0001] The invention relates to a method for preparing a sol, in particular to a method for preparing a temperature-resistant nano AgCl sol. Background technique [0002] The commonly used fungicide is nano-silver oxide [Xia Jinlan et al., Antibacterial Agents and Their Antibacterial Mechanism, Journal of Central South University, 2004, 35(1), 31-38]. Silver-based antibacterial fibers and fabrics are mainly obtained through two methods. One is to prepare functional fibers by adding carriers or ultrafine silver particles with certain thermal stability during the fiber forming process; the other is to prepare functional fibers in fibers or fabrics. In post-treatment, silver ions or silver are introduced into fibers or fabrics by coating, dipping or grafting [Wang Shan et al., Research and Application of Silver-loaded Inorganic Slow-release Antibacterial Materials, China Ceramics , 2000, 36(2), 7-9]. But these silver-carrying methods carry silver not firmly, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G5/02
Inventor 李登新李占强陈小立陈玲徐利蓉陈倩朱美芳
Owner DONGHUA UNIV
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