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Silver-zinc nano-composite antibacterial agent, and preparation method and application thereof

A nanocomposite, antibacterial agent technology, applied in the field of building materials, can solve the problems of difficulty in ensuring air purification, antibacterial efficacy, and insufficient distribution stability of antibacterial agents, and achieve significant antibacterial and antifungal effects, long-lasting antibacterial properties, and good environmental protection. Effect

Inactive Publication Date: 2021-05-28
同曦集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention adds nano-silver and negative ion powder to the water-based caulking agent, so that it has the effect of eliminating air odor and sterilizing at the same time, but the distribution stability of the antibacterial agent in the caulking agent system is not stable enough, and it is difficult to ensure uniform and effective air purification and antibacterial efficacy

Method used

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  • Silver-zinc nano-composite antibacterial agent, and preparation method and application thereof
  • Silver-zinc nano-composite antibacterial agent, and preparation method and application thereof
  • Silver-zinc nano-composite antibacterial agent, and preparation method and application thereof

Examples

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Effect test

preparation example 1

[0063] This preparation example prepares a kind of silver-zinc nanocomposite antibacterial agent of coupling modification, and method is as follows:

[0064] (1) Prepare ZnSO with a concentration of 1mol / L 4 , 0.168mol / L AgNO 3 , 1mol / L NH 4 HCO 3 aqueous solution;

[0065] (2) Take 100mL ZnSO 4 The solution was placed in a three-necked flask, stirred at 800r / min at 20°C, and 200mL NH 4 HCO 3 The solution was added dropwise into a three-necked flask, and after the dropwise addition was completed, the reaction was continued for 2 h;

[0066] (3) 50mL AgNO 3 The solution is added dropwise to the reaction product of step (2), and the reaction is continued for 1h;

[0067] (4) Centrifuge the reaction product of step (3), wash and centrifuge the precipitate twice with deionized water, then wash and centrifuge once with absolute ethanol, put it in a muffle furnace, heat up to 400°C, and keep it warm for 3.5h , cooling to obtain the silver-zinc nanocomposite antibacterial ag...

preparation example 2

[0070] This preparation example prepares a kind of silver-zinc nanocomposite antibacterial agent of coupling modification, and method is as follows:

[0071] (1) Prepare ZnCl with a concentration of 1mol / L 2 , 0.168mol / L AgNO 3 , 1mol / L NH 4 HCO 3 aqueous solution;

[0072] (2) Take 100mL ZnCl 2 The solution was placed in a three-necked flask, stirred at 800r / min at 20°C, and 150mL NH 4 HCO 3 The solution was added dropwise into a three-necked flask, and after the dropwise addition was completed, the reaction was continued for 2.5 hours;

[0073] (3) 60mL AgNO 3 The solution was added dropwise to the reaction product of step (2), and the reaction was continued for 1.5h;

[0074] (4) Centrifuge the reaction product of step (3), wash and centrifuge the precipitate twice with deionized water, then wash and centrifuge once with absolute ethanol, place it in a muffle furnace, heat up to 450°C, and keep it warm for 3h. Cool to obtain the silver-zinc nanocomposite antibacter...

preparation example 3

[0077] This preparation example prepares a kind of silver-zinc nanocomposite antibacterial agent of coupling modification, and method is as follows:

[0078] (1) Prepare ZnSO with a concentration of 1mol / L 4 , 0.168mol / L AgNO 3 , 1mol / L NH 4 HCO 3 aqueous solution;

[0079] (2) Take 100mL ZnSO 4 The solution was placed in a three-necked flask, stirred at 800r / min at 20°C, and 250mL NH 4 HCO 3 The solution was added dropwise into a three-necked flask, and after the dropwise addition was completed, the reaction was continued for 1.5 h;

[0080] (3) 40mL AgNO 3 The solution is added dropwise to the reaction product of step (2), and the reaction is continued for 1h;

[0081] (4) Centrifuge the reaction product of step (3), wash and centrifuge the precipitate twice with deionized water, then wash and centrifuge once with absolute ethanol, place it in a muffle furnace, heat up to 350°C, and keep it warm for 4h. Cool to obtain the silver-zinc nanocomposite antibacterial agen...

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Abstract

The invention relates to a silver-zinc nano-composite antibacterial agent, and a preparation method and application thereof. The preparation method of the silver-zinc nano-composite antibacterial agent comprises the following steps: (1) mixing and reacting zinc salt and a precipitant, wherein the precipitant comprises carbonate and / or bicarbonate; (2) mixing a reaction product in step (1) with silver salt, and continuously reacting; and (3) centrifuging the reaction product in the step (2), washing the precipitate, and reacting at high temperature to obtain the silver-zinc nano composite antibacterial agent. The silver-zinc nano-composite antibacterial agent obtained by the preparation method has remarkable antibacterial and mildew-proof effects, the antibacterial rate reaches 98% or above, the mildew-proof grade can reach 0 grade at most, and the antibacterial property is lasting; and meanwhile, the environment-friendly performance is good, the mechanical strength is high, and the antibacterial agent is very suitable for being used for preparing the seam beautifying agent with the antibacterial and mildew-proof effects.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a silver-zinc nanocomposite antibacterial agent and its preparation method and application, especially to a silver-zinc nanocomposite antibacterial agent and its preparation method and its use in the preparation of two-component antibacterial and mildew-proof ceramic tiles. Application in caulking agent. Background technique [0002] In the home improvement process, the gaps between wall and floor tiles in the living room, kitchen, bathroom, etc. are mainly filled with putty powder or white cement. This kind of material is poor in function, and generally only has a filling function. After a period of use, it is easily stained by dust, oily smoke, etc., and turns from white to black, which not only affects the appearance, but also tends to breed mold and produce peculiar smell, which in turn affects home environment. The beautifying agent can solve the aes...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01P1/00A01P3/00C09D5/14C09D163/00C09D7/65
CPCA01N59/16C08K2201/011C09D5/14C09D163/00C09D7/65C08L83/04C08L13/00C08L81/04C08K9/06C08K3/26C08K9/04
Inventor 陈广川于红光李顺
Owner 同曦集团有限公司
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