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A kind of preparation method of long-acting composite antibacterial ceramics

A composite antibacterial and ceramic technology, applied in clay products, applications, household appliances, etc., can solve the problems of inability to long-term antibacterial and inactivation, and achieve the effects of low cost, simple preparation steps and good antibacterial effect.

Inactive Publication Date: 2018-05-22
广东东泰陶瓷实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, silver ions with antibacterial effect are coated with nano-titanium dioxide by a sol-gel method to protect its structural integrity under high-temperature firing. In addition, the photocatalytic function of nano-titanium dioxide itself can be maintained after the dissolution and volatilization of silver ions is completed. Antibacterial can be achieved through photocatalysis, which not only solves the problem that traditional antibacterial agents will lose their activity due to structure damage or volatilization when fired at high temperature, but also makes up for the defect that common antibacterial ceramics cannot be long-lasting antibacterial, and has broad application prospects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] First measure 500mL of tetra-n-butyl titanate and pour it into a beaker filled with 1000mL of deionized water, then move the beaker into an ice-water bath at 6°C, and stir with a stirrer at a speed of 400r / min for 30min to prepare a precursor solution for later use 300mL concentration of 0.2mol / L silver nitrate solution was added to 2000mL of absolute ethanol, and the ultrasonic oscillator was mixed with 300W power for 2h to obtain a derivative doping solution, which was moved into a mixing tank with a stirrer and a dropping funnel. In the three-necked flask, start the stirrer to stir at a speed of 800r / min; then drop the spare precursor solution into the three-necked flask through the dropping funnel at a rate of 5mL / min under stirring, and move the flask to 75°C after the addition is completed. In the water bath, continue to stir and react for 40 minutes, then stand overnight at room temperature to obtain a viscous sol, put it in an oven and dry it at 110°C for 8 hours...

example 2

[0022]First, measure 400mL of tetra-n-butyl titanate and pour it into a beaker filled with 900mL of deionized water, then move the beaker into an ice-water bath at 4°C, stir with a stirrer at a speed of 300r / min for 20min, and prepare a precursor solution for later use. ; 200mL concentration of 0.2mol / L silver nitrate solution was added to 1500mL absolute ethanol, oscillating and mixing with 200W power for 1h with an ultrasonic oscillator to obtain a derivative doping solution, and it was moved into a mixing tank with a stirrer and a dropping funnel In the three-necked flask, start the stirrer to stir at a speed of 700r / min; then drop the spare precursor solution into the three-necked flask through the dropping funnel at a rate of 3mL / min under stirring, and move the flask to 65°C after the addition is complete. In the water bath, continue to stir and react for 30 minutes, then stand overnight at room temperature to obtain a viscous sol, put it in an oven and dry it at 105°C fo...

example 3

[0025] First measure 450mL of tetra-n-butyl titanate and pour it into a beaker filled with 950mL of deionized water, then move the beaker into an ice-water bath at 5°C, and stir with a mixer at a speed of 350r / min for 25min to prepare a precursor solution for later use 250mL concentration of 0.2mol / L silver nitrate solution was added to 1700mL of absolute ethanol, and the ultrasonic oscillator was mixed with a power of 250W for 2h to obtain a derivative doping solution, which was moved into a mixing tank with a stirrer and a dropping funnel. In the three-necked flask, start the stirrer to stir at a speed of 750r / min; then drop the spare precursor solution into the three-necked flask through the dropping funnel at a rate of 4mL / min under stirring, and move the flask to 70°C after the addition is completed. In the water bath, continue to stir and react for 35 minutes, then stand overnight at room temperature to obtain a viscous sol, put it in an oven and dry it at 107°C for 7 hou...

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PUM

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Abstract

The invention relates to a preparation method of long-acting composite antibiotic ceramic and belongs to the technical field of ceramic material preparation. Nanometer titania doped with silver ions is prepared through a sol-gel method, and is mixed with other ceramic ingredients prior to sintering to obtain the long-acting composite antibiotic ceramic. The silver ions with antibiotic effect is coated with nanometer titania through the sol-gel method for protecting the antibiotic silver ions and protecting structural integrity under high-temperature sintering, and in addition, due to a photocatalysis function of nanometer titania, antibiotic effect can be realized through photocatalysis after the silver ions are dissolved and volatilized completely. The prepared long-acting composite antibiotic ceramic is good in antibiotic effect and has long-acting antibiotic efficiency, the antibiotic rate is over 98%, and antibiotic effect remains unchanged after long-time use.

Description

technical field [0001] The invention relates to a preparation method of long-acting composite antibacterial ceramics, which belongs to the technical field of preparation of ceramic materials. Background technique [0002] The rapid advancement of science and technology has increased people's requirements for production and life, especially the deterioration of global environmental problems in recent decades, making the research and development and preparation of antibacterial and antiviral functions widely supported and concerned by the society. People's demand and expectation for antibacterial functional materials have become very strong. The market products in this field have developed from the previous low-level, low-efficiency, short-term, high-cost antibacterial and sterilizing effects to high-efficiency sterilization, continuous action, and long-lasting A new level of durability, environmental protection and health. [0003] Ceramic products with antibacterial functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13C04B33/16C04B33/24
CPCC04B33/131C04B33/16C04B33/24C04B2235/3232C04B2235/3472C04B2235/408C04B2235/6022C04B2235/96
Inventor 张静薛培龙林茂平
Owner 广东东泰陶瓷实业有限公司
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