Nano silver composite antibacterial material using porous ceramics as carrier and preparation method thereof

A porous ceramic and composite antibacterial technology, applied in the field of antibacterial materials, achieves the effects of less raw material consumption, low production cost and simple process

Inactive Publication Date: 2007-10-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to avoid the deficiencies in the prior art of the above-mentioned antibacterial agent materials, and provide a nano-silver composite antibacterial agent with less raw material consumption, simple process, low production cost, and short production cycle, which uses porous ceramics as the carrier. Materials and their preparation methods

Method used

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  • Nano silver composite antibacterial material using porous ceramics as carrier and preparation method thereof
  • Nano silver composite antibacterial material using porous ceramics as carrier and preparation method thereof
  • Nano silver composite antibacterial material using porous ceramics as carrier and preparation method thereof

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Embodiment 1

[0032] Embodiment 1: The preparation method of nano-silver composite antibacterial material, wherein the porous ceramics used are purchased from the Filtration Company of Shandong Industrial Ceramics Research and Design Institute. The coupling agent is γ-aminopropyltriethoxysilane (A-1100), and the surfactant is polyvinylpyrrolidone (PVP), and the steps are as follows:

[0033] 1. Add the solid silver nitrate to 10ml of ethylene glycol to dissolve, and stir it magnetically for 10 minutes to prepare a solution of silver nitrate in ethylene glycol, 0.005mol / L;

[0034] 2. Dissolve the surfactant in 10ml of ethylene glycol and stir it magnetically for 10 minutes to prepare a surfactant-based ethylene glycol solution, 0.015mol / L;

[0035] 3. Mix the two solutions in steps 1 and 2, stir magnetically for 30 minutes, and make nano-silver sol with a particle size of 10-20nm for later use;

[0036] 4. Add the coupling agent to ethanol, mix evenly, prepare a 1% ethanol solution of the ...

Embodiment 2

[0039]Embodiment 2: the preparation method of nano-silver composite antibacterial material, wherein used coupling agent is γ-mercaptopropyltrimethoxysilane (A-189), and surfactant is polyvinylpyrrolidone (PVP), and step is as follows:

[0040] 1. Add the silver nitrate solid into 10ml of ethylene glycol to dissolve, and stir it magnetically for 10 minutes to prepare a solution of silver nitrate in ethylene glycol, 0.02mol / L;

[0041] 2. Dissolve the surfactant in 10ml of ethylene glycol and stir it magnetically for 10 minutes to prepare a surfactant-based ethylene glycol solution, 0.06mol / L;

[0042] 3. Mix the two solutions in steps 1 and 2, stir magnetically for 30 minutes, and make nano-silver sol with a particle size of 40-50nm for later use;

[0043] 4. Add the coupling agent to ethanol, mix evenly, prepare a 1% ethanol solution of the coupling agent by volume, add 0.1% acetic acid by volume based on the ethanol solution of the coupling agent, the pH value is 3.5-5.5, Se...

Embodiment 3

[0046] Embodiment 3: the preparation method of nano-silver composite antibacterial material, wherein used coupling agent is γ-aminopropyltriethoxysilane (A-1100), and surfactant is polyvinylpyrrolidone (PVP), and step is as follows :

[0047] 1. Add the silver nitrate solid into 10ml of ethylene glycol to dissolve, and stir it magnetically for 10 minutes to prepare a solution of silver nitrate in ethylene glycol, 0.04mol / L.

[0048] 2. Dissolve the surfactant in 10ml of ethylene glycol, stir it magnetically for 10 minutes, and prepare the ethylene glycol solution of the surfactant, 0.12mol / L.

[0049] 3. Mix the two solutions in steps 1 and 2, and stir magnetically for 30 minutes to make nano-silver sol with a particle size of 80-100nm for later use.

[0050] 4. Add the coupling agent to ethanol, mix evenly, prepare a 1% ethanol solution of the coupling agent by volume, add 0.1% acetic acid by volume based on the ethanol solution of the coupling agent, the pH value is 3.5-5.5...

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Abstract

The invention relates to a nano-Ag compound antisepsis material using porous porcelain as the carrier and method for preparing same. In the method, coupling agent modified porous porcelain is dipped in 10-100nm nano-Ag sol for 12-24 hours, which is then taken out and washed with alcohol and the product is obtained after drying. The porous porcelain material is selected from the porous porcelain for filtering water, and the coupling agent is ramda-mercaptopropyl trimethoxy silane or ramda-aminopropyl triethoxy silane. The invention modifies the porous porcelain carrier with the coupling agent, fixes the nano-Ag in and on the surface of the porous porcelain in a chemical bonding way, which can reach the effects of uniform dispersion without changing the original mechanical properties of the porous porcelain, not easy fall-off in friction and impact condition and sterilization in continuance. The invention is characterized in small consumption of raw materials, simple processing, low production cost and short production period.

Description

technical field [0001] The invention relates to an antibacterial material, in particular to a nano-silver composite antibacterial material with porous ceramics as a carrier and a preparation method thereof. Background technique [0002] As a special form of metallic silver, nano-silver not only exerts the antibacterial effect of silver, but also has super activity and stronger tissue permeability due to its extremely small particles and larger surface area. Its bactericidal effect is superior to that of ordinary silver. Hundreds of times. In addition, due to the surface electronic properties of nanoscale metallic silver, it can form ligands with electron-withdrawing groups such as sulfhydryl groups and amine groups on bacterial protein molecules, thereby further enhancing the antibacterial effect. [0003] Microporous ceramic is a new type of inorganic non-metallic filter material, which is made of quartz sand, alumina, silicon carbide or mullite as aggregate, mixed with a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50B01D39/20
Inventor 吕耀辉刘宏王彦敏姚淑华杨顺亮刘静黄林勇秦淑斌堵国君郑斐斐左致远桑元华陈婷王继扬
Owner SHANDONG UNIV
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