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Copper nano composite antibacterial coating and preparation method thereof

A composite antibacterial and copper nanotechnology, applied in coatings, devices for coating liquid on the surface, special surfaces, etc., can solve the problems of poor anti-mold effect, narrow application range, easy discoloration, etc., and achieve not easy discoloration, excellent antibacterial Good performance and anti-oxidation effect

Inactive Publication Date: 2018-08-24
江西赣大材料技术研究有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, the present invention provides a copper nanocomposite antibacterial coating and its preparation method, which solves the problems of easy discoloration, poor anti-mold effect, high cost and narrow application range

Method used

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  • Copper nano composite antibacterial coating and preparation method thereof
  • Copper nano composite antibacterial coating and preparation method thereof
  • Copper nano composite antibacterial coating and preparation method thereof

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preparation example Construction

[0037] The embodiment of the present invention provides a kind of preparation method of copper nanocomposite antibacterial coating, comprises the following steps:

[0038] S1, adopt chemical reduction method to prepare copper nano colloid, obtain copper nano powder after centrifugation and drying;

[0039] Wherein, the step of preparing copper nano colloid by chemical reduction method specifically includes:

[0040] Copper nanoparticles with particle size of 50-400nm are prepared by chemical reduction method in organic solvent, and surfactant is added to control particle size and shape. The copper salt may be copper oxide, the reducing agent used is hydrazine hydrate or ascorbic acid, the surfactant is polyvinylpyrrolidone and cetyltriethylammonium bromide, and the organic solvent used is absolute ethanol. In the reaction system for preparing copper nanocolloids by the chemical reduction method, the proportions of each substance are as follows: 10-15% of copper salt, 55-65% o...

Embodiment 1

[0054] A preparation method of copper nanocomposite antibacterial coating, comprising the following steps:

[0055] S1. Preparation of copper nanopowder: fully dissolve 6g of copper oxide powder, 3g of polyvinylpyrrolidone (PVP), and 3g of cetyltrimethylammonium bromide (CTAB) in 50ml of absolute ethanol, slowly drop into 10ml of hydrazine hydrate solution (80%) carry out chemical reduction reaction, centrifuge, dry to obtain copper nanopowder after reaction finishes; The XRD collection of illustrative plates of the copper nanopowder that makes can refer to figure 1 , each diffraction peak corresponds to the diffraction peak of pure copper.

[0056] S2. Put the copper nano-powder and electrostatic spraying powder prepared in step S1 into a mixer at a weight ratio of 0.2:99.8 for full mixing, and put the uniformly mixed raw materials in a high-temperature extruder to melt, extrude and cool to form a sheet , and then the raw material sheet is crushed and sieved into an ultrafin...

Embodiment 2

[0060] A preparation method of copper nanocomposite antibacterial coating, comprising the following steps:

[0061] S1, preparation of copper nanopowder: 6g copper oxide powder, 3g polyvinylpyrrolidone, 3g hexadecyltrimethylammonium bromide are fully dissolved in 50ml absolute ethanol, slowly drop into 10ml hydrazine hydrate solution (80%) for chemical Reduction reaction, after the reaction is completed, centrifuge and dry to obtain copper nano powder.

[0062] S2. Put the copper nano powder and electrostatic spraying powder prepared in step S1 into the mixer at a weight ratio of 1:99

[0063] Fully mixed in a high-temperature extruder, the uniformly mixed raw materials are melted in a high-temperature extruder, extruded and cooled into flakes, and then the raw flakes are crushed and sieved into ultrafine copper nanocomposite antibacterial powders.

[0064] S3. Copper nanocomposite antibacterial powder is sprayed on the metal surface by electrostatic spraying process to obtai...

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Abstract

The invention provides a copper nano composite antibacterial coating and a preparation method thereof. The preparation method comprises the following steps: S1, preparing a copper nano colloid by adopting a chemical reducing method, and performing centrifuging and drying to obtain copper nanopowder; S2, uniformly dispersing the copper nanopowder in electrostatic spraying powder to obtain copper nano composite antibacterial powder; and S3, spraying the copper nano composite antibacterial powder on the metal surface by adopting an electrostatic spraying process to form the copper nano compositeantibacterial coating on the metal surface. The copper nano composite antibacterial coating prepared according to the preparation method is high in antibacterial performance, is non-toxic and tasteless, and is not likely to change in color, is simple in preparation process, is lower in cost, and has a great application prospect in the surface coating field of metal products in home appliances, file cabinets, medical devices and the like.

Description

technical field [0001] The invention relates to the technical field of metal surface coatings, in particular to a copper nanocomposite antibacterial coating and a preparation method thereof. Background technique [0002] Health is one of the topics that people are most concerned about. However, bacteria are everywhere and pervasive, and their spread and spread seriously threaten human health. With the improvement of people's living standards and the enhancement of environmental awareness, the voice of protecting the ecological environment and improving the quality of people's living and working environment is growing louder. Therefore, a healthy living environment has increasingly become the pursuit of human beings, and environmental microorganisms that endanger human health have also attracted people's attention. Using antibacterial materials to kill and inhibit the growth and reproduction of harmful bacteria is an important means to improve human health. To meet people's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D5/00B05D7/24B22F9/24
CPCB05D5/00B05D7/14B05D7/24B05D2601/28B22F9/24
Inventor 胡剑谢友能肖施蒙张萌张杰群
Owner 江西赣大材料技术研究有限公司
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