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Nanometer silver collodol, preparation method and application thereof

A nano-silver sol, a technology for use, applied in the field of fiber textiles, can solve problems such as not being controlled, and achieve good stability

Active Publication Date: 2011-05-11
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 collodol, preparation method and application thereof
  • Nanometer silver collodol, preparation method and application thereof
  • Nanometer silver collodol, 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 100 ppm

[0099] The preparation steps are as follows:

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

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

[0102] obtained using the X-ray diffraction method described in this specification figure 1 The results shown indicate that the collo...

Embodiment 2

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

[0105] The preparation steps are as follows:

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

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

[0108] The same detection method was used for detection, and the results were the same as those obtained in Example 1.

[0109] Using the method described in ...

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 5 parts by weight of polyvinylpyrrolidone, 55 parts by weight of ethanol, and 40 parts by weight of glycerol are used.

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

[0114] The same detection method was used for detection, and the results were the same as those obtained in Example 1. ...

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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 preparation method of the nano-silver sol, and the use of the nano-silver sol. 【Background technique】 [0002] Nano-silver is a broad-spectrum, high-efficiency 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 the equipment requirements are high. The chemical method to obtain nano-silver by reducing silver ions is 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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