Nanometer silver collosol, preparation method and application thereof

A nano-silver sol, sol technology, applied in the field of fiber textiles, can solve problems such as uncontrolled, and achieve the effect of good stability

Active Publication Date: 2010-01-27
CHANGZHOU CHAMGO NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the system does not use a specific reducing agent, although the silver sol is relatively stable, most of the silver ions in the system are not reduced and form monomer silver. Under conditions such as the presence of ions or light, it will eventually be reduced to silver and agglomerated, and this process is not controlled, which limits its application

Method used

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  • Nanometer silver collosol, preparation method and application thereof
  • Nanometer silver collosol, preparation method and application thereof
  • Nanometer silver collosol, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Example 1 : Preparation of nano-silver sol with a concentration of 100ppm

[0099] The preparation steps are as follows:

[0100] First, in a reactor with a cover, 1 part of glycogen, 40 parts of ethanol and 59 parts of ethylene glycol were dissolved in parts by weight to prepare the mixed and dispersed reducing agent solution.

[0101] Then, silver acetate is dissolved in ethanol to make a concentration of 0.017% by weight silver salt ethanol solution, and then under stirring, dark and airtight conditions, the silver salt ethanol solution is added to the mixed dispersion obtained above. In the reducing agent solution, wherein the weight of the silver salt is 50 g, and the weight of the mixed and dispersed reducing agent solution is 50 g, and then react at a temperature of 60° C. for 10 hours to obtain the nano silver sol.

[0102] Obtained by X-ray diffraction method described in this specification figure 1 The results shown show that the colloidal particles in the...

Embodiment 2

[0104] Example 2 : Preparation of nano-silver sol with a concentration of 50ppm

[0105] The preparation steps are as follows:

[0106] The implementation of this example is the same as in Example 1, but using 0.1 parts of glucose, 75 parts of ethanol and 24.9 parts of ethylene glycol;

[0107] Then, silver nitrate is dissolved in ethanol to make a concentration of 0.0085% by weight silver nitrate ethanol solution, then under stirring, dark and airtight conditions, the silver nitrate ethanol solution is added to the mixed dispersion obtained in front In the reducing agent solution, wherein the weight of the silver nitrate is 50 g, and the weight of the mixed and dispersed reducing agent solution is 50 g, and then react at a temperature of 50° C. for 12 hours to obtain the nano-silver sol.

[0108] Adopt same detection method to detect, and its result is identical with the result that embodiment 1 obtains.

[0109] Using the method described in this manual to detect, after ...

Embodiment 3

[0110] Example 3 : Preparation of nano-silver sol with a concentration of 200ppm

[0111] The preparation steps are as follows:

[0112] The implementation of this example is the same as that of Example 1, but uses 5 parts by weight of polyvinylpyrrolidone, 55 parts by weight of ethanol, and 40 parts by weight of glycerol.

[0113] Then, silver acetate is dissolved in ethanol to make a concentration of 0.034% by weight silver nitrate ethanol solution, then under stirring, dark and airtight conditions, the silver acetate ethanol solution is added to the mixed dispersion obtained in front In the reducing agent solution, wherein the weight of the silver acetate is 50 g, and the weight of the mixed and dispersed reducing agent solution is 50 g, and then react at a temperature of 50° C. for 25 hours to obtain the nano-silver sol.

[0114] Adopt same detection method to detect, and its result is identical with the result that embodiment 1 obtains.

[0115] Using the method descr...

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Abstract

The invention relates to a nanometer silver collosol, a preparation method and an application thereof. The preparation method comprising the following steps: dissolving reductor, alcohol and fatty alcohol in a closed reactor to prepare a mixed dispersion reductor solution; and then carrying out reaction between a silver salt alcohol solution and the mixed dispersion reductor solution for 6-72 hours under the temperature of 35-70 DEG C to obtain the nanometer silver collosol. The nanometer silver collosol has good antibacterial property and is very stable, safe in use and low in production cost, thereby being extensively used for the antibacterial processing of textiles and the antibacterial and deodorizing processing of shoes and having strong market competitiveness.

Description

【Technical field】 [0001] The invention relates to the technical field of fiber textiles. More specifically, the present invention relates to a nano-silver sol, a method for preparing the nano-silver sol, and an application of the nano-silver sol. 【Background technique】 [0002] Nano-silver is a kind of broad-spectrum, efficient and safe antibacterial material. Its preparation methods are generally divided into two categories: physical methods and chemical methods: physical methods need to use methods such as laser, arc high-frequency induction or electron beam irradiation. Nano-silver has high purity and controllable particle size, but the technology is complex and requires high equipment; chemical methods to obtain nano-silver by reducing silver ions are simple in operation and low in cost, but the particle size is not easy to control, and the product quality is often unstable. [0003] Chinese patent CN 1583332A discloses a nano-silver sol and its preparation method: it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24D06M11/65D06M13/188D06M13/192A61L2/238
Inventor 赵正坤李毕忠李泽国
Owner CHANGZHOU CHAMGO NANO MATERIALS
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