Preparation method of antimicrobial mould-proof stainless steel coating containing silver, zinc and cerium

An antibacterial and mildew proof, stainless steel technology, applied in coating, metal material coating process, solid-state chemical plating, etc., can solve the problems of destroying the surface finish and cleanliness of stainless steel, complex antibacterial material process, high price, etc. Low, easy process control, good corrosion resistance

Inactive Publication Date: 2015-05-06
SHANGHAI CHENXIAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have their own shortcomings: some have complex processes, some are expensive, and some have destroyed the smoothness and cleanliness of the stainless steel surface due to the use of high temperature.
[0005] In summary, the antibacterial materials prepared above are complex in process, and because silver has certain defects, it causes problems such as high price and easy discoloration, so it is necessary to take measures to reduce Cost and the ability to prepare hybrid antimicrobials that combat discoloration issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of an antibacterial and mildew-proof stainless steel coating containing silver, zinc and cerium, the steps are as follows:

[0028] 1. Add a sufficient amount of sodium dihydrogen phosphate aqueous solution to the zinc oxychloride aqueous solution to react to obtain a nano-sized zinc phosphate carrier, add a surfactant to control the particle size, and the added surfactant is PEG (polyethylene glycol) , the above-mentioned surfactants can also prevent the agglomeration between colloidal particles during the carrier precipitation process.

[0029] 2. Put the nano-zinc phosphate carrier into the ultrafiltration membrane system for filtration. The operating temperature of the ultrafiltration membrane system is 10°C, the operating pressure is controlled at 3 bar, and its operating time is controlled at 8 hours.

[0030] 3. Add pure water to dissolve the sol precipitation of the nano-zinc phosphate carrier, and then add an aqueous solution of antibacter...

Embodiment 2

[0037] A preparation method of an antibacterial and mildew-proof stainless steel coating containing silver, zinc and cerium, the preparation steps are as follows:

[0038] 1. Add a sufficient amount of sodium dihydrogen phosphate aqueous solution to the zinc oxychloride aqueous solution to react to obtain a nano-scale zinc phosphate carrier, add a surfactant to control the particle size of the surfactant, and the added surfactant is CMC (hydroxymethyl cellulose ), the above-mentioned surfactants can also prevent the agglomeration between colloidal particles in the carrier precipitation process.

[0039] 2. Put the nano-zinc phosphate carrier into the ultrafiltration membrane system for filtration. The ultrafiltration membrane screening process is driven by the pressure difference on both sides of the membrane, and the ultrafiltration membrane is used as the filter medium. The micropores only allow water and small molecular substances to pass through to become the permeate, wh...

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PUM

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Abstract

The invention relates to a preparation method of an antibacterial and mildew-proof stainless steel coating containing silver, zinc and cerium, and belongs to the field of antibacterial and mildew-proof materials. The steps of the invention are (1) adding sodium dihydrogen phosphate aqueous solution to the zinc oxychloride aqueous solution to react to obtain a nano-scale zinc phosphate carrier; (2) putting the zinc carrier into an ultrafiltration membrane system for filtration; (3) adding the sol precipitation to the Dissolve in pure water, add antibacterial metal ion aqueous solution, adsorption, displacement reaction; (4) Add cerium nitrate aqueous solution, silver nitrate aqueous solution, zinc nitrate aqueous solution to the sol suspension; (5) Add oxalic acid and stir; (6) Suction filtration, Cleaning the reaction product, drying it, pulverizing it, and calcining it; (7) preparing hydrocolloid glue; (8) coating it evenly on stainless steel tableware and drying it. The product prepared by the invention has the characteristics of good corrosion resistance, no discoloration on the surface of the material, low cost, less pollution, simple process and easy control, and can be widely used in the fields of chemical industry, food, printing and dyeing, cosmetics, biopharmaceutical and electromechanical.

Description

technical field [0001] The invention belongs to the technical field of antibacterial and antimildew materials, and more specifically relates to a preparation method of an antibacterial and antimildew stainless steel coating containing silver, zinc and cerium. Background technique [0002] At present, the research on antibacterial materials is mainly concentrated on preparation. The main methods are "infiltration of antibacterial ions by high temperature heat treatment, adding antibacterial ions in stainless steel smelting to manufacture diffuse antibacterial stainless steel, coating antibacterial layer on stainless steel surface, composite antibacterial stainless steel, etc. But these The methods all have their own deficiencies: some have complicated processes, some have expensive equipment, and some have destroyed the smoothness and cleanliness of the stainless steel surface due to the use of high temperature. [0003] Chinese patent CN1793428 discloses a method for prepari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C20/02
Inventor 蒋春华
Owner SHANGHAI CHENXIAN IND
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