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High-temperature resistant ceramic antibacterial agent coated with inorganic nano-material and preparation technology of high-temperature resistant ceramic antibacterial agent

A technology of inorganic nano-materials and high-temperature resistant ceramics, applied in the field of materials, can solve the problems of large antibacterial active materials, consumption, etc., and achieve the effects of reducing production costs, reducing usage, and reducing volatilization

Inactive Publication Date: 2015-03-04
MINNAN NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Let the antibacterial active agent silver ions simply adsorb on the surface of the carrier material or penetrate into the interlayer of the carrier material, although it can reduce the volatilization of silver ions at high temperature to a certain extent, but still consume a large amount of antibacterial active materials

Method used

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  • High-temperature resistant ceramic antibacterial agent coated with inorganic nano-material and preparation technology of high-temperature resistant ceramic antibacterial agent
  • High-temperature resistant ceramic antibacterial agent coated with inorganic nano-material and preparation technology of high-temperature resistant ceramic antibacterial agent
  • High-temperature resistant ceramic antibacterial agent coated with inorganic nano-material and preparation technology of high-temperature resistant ceramic antibacterial agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation process includes the following steps:

[0026] (1) Weigh carboxymethyl cellulose and dissolve it in water to prepare a solution with a concentration of 0.1% by weight.

[0027] (2) Add silver oxide with a particle size of 20-150nm as an antibacterial active agent to the carboxymethylcellulose solution prepared in step (1), and the weight ratio of the antibacterial active agent to the volume of the carboxymethylcellulose aqueous solution is 1g : Mix in the proportion of 3mL, stir well at 60°C to form a muddy substance, take it out and air dry at room temperature, and coat the surface of the silver oxide antibacterial active agent with a layer of carboxymethylcellulose film.

[0028] (3) Mix ethyl orthosilicate and anhydrous ethanol at a volume ratio of 1:1.3. After mixing, add 0.5 times the volume of the mixed solution for dilution to form a clear solution. Mix according to the volume ratio of the mass of the antibacterial active agent powder coated with carbox...

Embodiment 2

[0030] The preparation process includes the following steps:

[0031] (1) Weigh polyacrylamide and dissolve it in water to make a solution with a concentration of 0.3wt%.

[0032] (2) Add the silver oxide antibacterial active agent with a particle size of 20nm~150nm to the above polyacrylamide solution, and mix according to the ratio of the weight of the antibacterial active agent to the volume of the polyacrylamide aqueous solution at a ratio of 1g: 2mL, at 60°C Stir it thoroughly to form a mud, take it out and air dry at room temperature, and coat the surface of the silver oxide antibacterial active agent material with a polyacrylamide film.

[0033] (3) Weigh ZrOCl separately 2 ·8H 2 O and (NH 4 ) H 2 PO 4 Dissolved in deionized water to form ZrOCl with the same concentration of 0.3mol / L 2 Solution and (NH 4 ) H 2 PO 4 Solution; press ZrOCl 2 With (NH 4 ) H 2 PO 4 The molar ratio is 1:1.4 and measure a certain volume of ZrOCl 2 Solution and (NH 4 ) H 2 PO 4 Solution; Weigh the ant...

Embodiment 3

[0035] The preparation process includes the following steps:

[0036] (1) Weigh polyethylene glycol and dissolve it in water to make a solution with a concentration of 0.6 wt%.

[0037] (2) Silver oxide with a particle diameter of 20nm~150nm is added as an antibacterial active agent to the above-mentioned polyethylene glycol organic polymer solution, and the ratio of the weight of the antibacterial active agent to the volume of the polyethylene glycol aqueous solution is 1g:1mL Mix and stir thoroughly at 60°C to form a mud, take it out and air-dry at room temperature, and coat the surface of the silver oxide antibacterial active agent with a polyethylene glycol film.

[0038] (3) Press 0.5Al 2 O 3 -1.25SiO 2 -1.0ZnO-2.0CaO The molar ratio of Si, Al, Zn, Ca in the formula is Si: Al: Zn: Ca = 1.25: 1.0: 1.0: 2.0 to take quantitative amounts of ethyl orthosilicate, aluminum nitrate, and zinc nitrate, respectively , Calcium nitrate, mix the ethyl orthosilicate and absolute ethanol in a ...

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Abstract

The invention provides a new preparation technology of a ceramic antibacterial agent capable of resisting high-temperature sintering. The new preparation technology is characterized in that the antibacterial active agent is subjected to surface coating by the nano inorganic material so that the coated antibacterial active agent has obvious high-temperature resistant property. The adopted coated material is silicon oxide, zirconium phosphate, or multicomponent inorganic material such as 0.5xAl2O3-(2-0.75x)SiO2-1.0ZnO-2.0CaO(x is 0.0-1.0), and antibacterial active center is silver oxide. After the coated antibacterial active material is calcinated for 30 minutes at 1250 DEG C to 1350 DEG C, the antibacterial activity is still evident, the defect of bad high-temperature resistant property of the existing antibacterial agent is overcome, and the quantity of the antibacterial active agent added to glaze can be obviously reduced. The coated antibacterial active material can be directly added to glaze water and is uniformly mixed for direct glazing, and high-temperature calcination is finally carried out to prepare antibacterial ceramic. The antibacterial ratio of the prepared antibacterial ceramic to common viruses and bacteria such as escherichia coli, staphylococcus aureus is more than 99%.

Description

technical field [0001] The invention belongs to the technical field of materials, and more specifically relates to the preparation technology of using some high-temperature-resistant inorganic materials to coat the surface of some antibacterial active agents so that they still have strong antibacterial properties after high-temperature sintering. Background technique [0002] Antibacterial antivirus has become a problem of concern in people's lives, related to people's health, related to people's quality of life. Among all kinds of antibacterial products, antibacterial ceramics are closely related to people's lives, and have received great attention, and a variety of antibacterial ceramic products have been developed. Invention patent "inorganic antibacterial ceramics and production process" (publication number CN1279222A) prepares antibacterial ceramics by adding nano-silver directly into the glaze water, and then sintering at high temperature. The silver antibacterial act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/628
Inventor 郑子山郭鸿旭林珩林俊陈国良庄庆龙
Owner MINNAN NORMAL UNIV
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