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Nano-silver antibacterial agent and preparation method thereof

A nano-silver antibacterial and nano-silver technology, which is applied in the field of antibacterial hygiene products, can solve the problems that the nano-silver is not uniformly dispersed, the nano-silver is not stable enough, and is prone to agglomeration, so as to improve the feel and comfort, improve the skin, and prevent agglomeration. Effect

Inactive Publication Date: 2014-08-27
杜一挺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has the following disadvantages: 1. Nano-silver is not stable enough in the detergent and is prone to agglomeration; 2. The dispersion of nano-silver in the detergent is not uniform enough
Though there is the silicon dioxide carrier antibacterial material that adopts silicon dioxide as carrier preparation to carry nano-silver now, still do not see at present, do not adopt any nano-silver carrier to overcome the technical scheme of the preparation nano-silver antibacterial material of above-mentioned technical problem

Method used

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Effect test

preparation example Construction

[0041] The present invention also provides a preparation method of the nano-silver antibacterial agent, comprising the following steps;

[0042] Step 1: prepare 1L of silver nitrate aqueous solution with a concentration of 0.005-0.1mol / L; according to the molar ratio of silver nitrate and protective agent of 1:20-5:1, add protective agent to the silver nitrate aqueous solution and stir until uniform Visually observe the complete dissolution of the protective agent. The protective agent is selected from at least one of polyethylene glycol, polypropylene glycol, ethylene glycol, sorbitol, sodium citrate, polyvinylpyrrolidone (PVP), carboxymethylcellulose, sodium hexametaphosphate and urea.

[0043] The second step: use photocatalytic reduction method to stimulate photoelectron reduction of Ag with ultraviolet light + , the wavelength of ultraviolet light is 200-400nm, the catalytic time is 6-72h, the color of the solution turns from colorless to dark, and the nano-silver antiba...

Embodiment 1

[0062] Prepare 1L of silver nitrate aqueous solution with a concentration of 0.005mol / L; according to the molar ratio of silver nitrate and protective agent at 1:20, add protective agent to the silver nitrate aqueous solution and stir evenly until the protective agent is completely dissolved by visual observation. The protecting agent is urea. Using photocatalytic reduction method, the photoelectron reduction of Ag was excited by ultraviolet light + , the wavelength of ultraviolet light is 200nm, the catalytic time is 6h, the color of the solution turns from colorless to dark, and the nano-silver antibacterial stock solution is obtained.

[0063] Mix 1g of sodium chloride, 5g of fatty alcohol polyoxyethylene ether sodium sulfate, 0.5ml of isopropanol, 0.1g of sodium citrate, 5ml of nano-silver antibacterial stock solution, 0.001g of Cathone, 0.01g of food flavor and 0.01g of pigment, add water to 100ml and stir evenly. The 100ml mixed solution was ultrasonically emulsified f...

Embodiment 2

[0065] Prepare 1L of silver nitrate aqueous solution with a concentration of 0.1mol / L; according to the molar ratio of silver nitrate and protective agent at 5:1, add protective agent to the silver nitrate aqueous solution, and stir evenly until the protective agent is completely dissolved by visual inspection. The protecting agent is sodium hexametaphosphate. Using photocatalytic reduction method, the photoelectron reduction of Ag was excited by ultraviolet light + , the wavelength of ultraviolet light is 400nm, the catalytic time is 72h, the color of the solution turns from colorless to dark, and the nano-silver antibacterial stock solution is obtained.

[0066] Sodium citrate 5g, fatty alcohol polyoxyethylene ether sodium sulfate 10g, fatty alcohol sodium sulfate 20g, polyethylene glycol 10ml, edetate disodium 2g, nano silver antibacterial stock solution 20ml, paraben 0.001g and food flavor 0.03g, add water to 100ml and stir evenly. The 100ml mixed solution was ultrasonic...

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Abstract

The invention provides a nano-silver antibacterial agent which includes nano-silver antibacterial stock solutions. Nano-silver is included in the nano-silver antibacterial stock solutions, and the content of the nano-silver is 0.00025 mol / kg to 0.02 mol / kg. The invention further provides a preparation method of the nano-silver antibacterial agent. The nano-silver antibacterial agent can be foam emulsion and sprays in a flow state, can be used as washing-free sprays, and is convenient for people to use when cleaning with water is inconvenient in travel.

Description

technical field [0001] The invention relates to an antibacterial sanitary product, in particular to a nano silver antibacterial agent and a preparation method thereof. Background technique [0002] In life, there are all kinds of harmful bacteria. Thereby people often have cleaning demand in daily life. However, existing detergents mainly utilize the hydrophilic and lipophilic digroups of surfactants therein to take away the oily groups of the washed place under the drive of water, but they often do not have antibacterial properties. [0003] Nano-silver is a new type of antibacterial agent, which has strong antibacterial and bactericidal effects and broad-spectrum antibacterial activity. It has an antibacterial effect that cannot be compared with traditional inorganic antibacterial agents. It has no drug resistance and high safety. With the growing resistance of bacteria to antibiotics, the research and application of nano-silver in the field of disinfection and steriliza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P1/00
Inventor 杜一挺
Owner 杜一挺
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