Antibacterial agent and application thereof

A technology of antibacterial agent and solvent, which is applied in the field of antibacterial agent and its application, and can solve the problems of no antibacterial ingredients, no antibacterial function, single antibacterial, etc.

Active Publication Date: 2020-08-11
广州盛门新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are antibacterial coatings prepared from traditional Chinese medicine ingredients. Although they are environmentally friendly, they have a single antibacterial effect and are prone to drug resistance.
CN103881487A discloses a kind of antibacterial varnish, and the

Method used

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  • Antibacterial agent and application thereof
  • Antibacterial agent and application thereof
  • Antibacterial agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Refer to attached figure 1 The schematic diagram of the preparation process of antibacterial agent shows that the preparation method of this example antibacterial agent is as follows:

[0073] Weigh the liquid-2 liquid sodium silicate with a modulus of 3.1-3.4, a Baume degree of 39°-41°, and a specific gravity of 1.37-1.40 and deionized water in a ratio of 1:2, and mix evenly to obtain sodium silicate solution.

[0074] A mixed solution containing 0.01mol / L nitric acid and 0.1mol / L silver nitrate was added to the sodium silicate solution at a volume ratio of 1:3, stirred for 15 minutes, and catalyzed to obtain an acidic sodium silicate solution.

[0075] Prepare dilute ammonia water with a concentration of 5%, and add ammonia water dropwise to the acidic sodium silicate solution under stirring conditions until the brown precipitate dissolves, then stop stirring and drop ammonia water, and let it stand for a few minutes to obtain a silver ion-containing water coagulatio...

Embodiment 2

[0081] This example differs from Antibacterial Agent Example 1 only in that the mass ratio of liquid-2 type liquid sodium silicate to deionized water is 1:400.

Embodiment 3

[0083] This example differs from Antibacterial Agent Example 1 only in that the content of silver nitrate is 0.05mol / L.

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Abstract

The invention discloses an antibacterial agent and application thereof. The antibacterial agent is prepared by the following preparation method: mixing a mixed solution of nitric acid and soluble silver salt with a sodium silicate solution to obtain an acidic sodium silicate solution; adding ammonia water into the acidic sodium silicate solution to prepare silver-containing ionic hydrogel; aging the silver ion-containing hydrogel to obtain silver ion-containing wet gel; carrying out electrolytic reduction on the silver ion-containing wet gel to obtain nano-silver-containing wet gel; carrying out solvent replacement on the nano-silver-containing wet gel, mixing the wet gel with a solution containing a silane coupling agent, carrying out surface modification treatment, drying, heating and removing impurities. The antibacterial agent product is free of pollution and few in impurity, the particle size of the nano-silver can be adjusted according to the specific surface area of the aerogel,and the antibacterial agent product is wide in application and has good application prospects. The antibacterial varnish prepared from the antibacterial agent can efficiently resist bacteria for a long time, and has the advantages of favorable adhesive force, favorable water resistance, high hardness, temperature resistance, moisture resistance, fouling resistance, stain resistance, high paint film transparency, high glossiness and excellent mildew resistance.

Description

technical field [0001] The invention relates to the technical field of antibacterial materials, in particular to an antibacterial agent and its application. Background technique [0002] Antibacterial materials are functional materials that have the function of killing or inhibiting the growth and reproduction of harmful bacteria. Antimicrobial agents can generally be divided into three categories: natural, organic and inorganic. Natural antibacterial agents are mainly animal and plant extracts, such as chitosan, sorbic acid, hinoki alcohol, etc., which have the characteristics of low toxicity and high safety, but have short service life, poor heat resistance, and narrow antibacterial range. The main components of organic antibacterial agents are quaternary ammonium salts, alcohols, bismuth, and pyrrole substances. Organic antibacterial agents have been used for a long time and have strong bactericidal power, but they have poor safety, poor chemical stability, and are prone...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/06A01P1/00A01P3/00A01P7/04A01P17/00C09D133/00C09D163/04C09D161/20C09D5/14
CPCA01N25/06A01N59/16C08K2003/0806C08K2201/011C08L2201/10C08L2205/03C09D5/14C09D133/00C08L63/04C08L61/20C08K3/08C08K7/26C08K9/06
Inventor 陈稳城刘克
Owner 广州盛门新材料科技有限公司
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