Electric heating antibacterial coating and preparation method thereof

A technology of antibacterial coating and electric heating layer, which is applied in the field of electric heating antibacterial coating and its preparation, can solve the problems of low antibacterial activity, short service life, poor safety, etc., and achieve the effect of increasing the application range and efficient antibacterial effect

Active Publication Date: 2019-01-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies have disadvantages such as poor safety, short service life, and low antibacterial activity.
Especially for many fields that require high antibacterial performance, such as food processing machinery, catering and sanitary equipment, etc., the existing antibacterial materials cannot meet the requirements well

Method used

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  • Electric heating antibacterial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] (1) Taking carbon steel as the substrate, after cleaning and drying with acetone, alcohol, and deionized water in sequence, the surface of the substrate is sandblasted and roughened to obtain a substrate with a rough surface. The process parameters adopted are air pressure 0.8MPa, sandblasting time 20 seconds, and the number of sand shot used for sandblasting is 36 mesh.

[0085] (2) Spraying a NiCrTi transitional coating with a thickness of 150 μm on the surface of the substrate obtained in step (1) by using an arc spraying technique. The NiCrTi wire diameter is 2mm. The spraying process parameters are: spraying voltage 36V, spraying current 200A, spraying distance 200mm, arc gun speed 600mm / s.

[0086] (3) Spraying a zirconia ceramic coating on the surface of the transition layer obtained in step (2) by using plasma spraying technology to obtain an insulating and heat-insulating layer with a thickness of 200 μm. The particle size of the zirconia ceramic powder is 20...

Embodiment 2

[0098](1) Using glass as a substrate, after cleaning and drying with alcohol and deionized water in sequence, the surface of the substrate is sandblasted and roughened to obtain a substrate with a rough surface. The process parameters adopted are air pressure 0.8MPa, sandblasting time 10 seconds, and the number of sand shot used for sandblasting is 100 mesh.

[0099] (2) Spraying a NiAl transitional coating on the surface of the substrate obtained in step (1) by using arc spraying technology, and the thickness of the coating is 200 μm. The NiAl wire diameter is 2 mm. The spraying process parameters are: spraying voltage 36V, spraying current 200A, spraying distance 200mm, arc gun speed 600mm / s.

[0100] (3) Spraying a zirconia ceramic coating on the surface of the transition layer obtained in step (2) by using plasma spraying technology to obtain an insulating and heat-insulating layer with a coating thickness of 150 μm. The particle size of the zirconia ceramic powder is 20...

Embodiment 3

[0105] (1) With stainless steel as the substrate, after cleaning and drying with acetone, alcohol, and deionized water in sequence, the surface of the substrate is roughened by sandblasting to obtain a substrate with a rough surface. The process parameters adopted are air pressure 0.8MPa, sandblasting time 20 seconds, and the number of sand shot used for sandblasting is 36 mesh.

[0106] (2) CoNiCrAlY transition coating is sprayed on the surface of the substrate obtained in step (1) by using plasma spraying technology, and the thickness of the coating is 150 μm. The particle size of the CoNiCrAlY powder is 15-45 μm. The spraying process parameters are: arc voltage 60V, arc current 500A, main air flow 50L / min, auxiliary air flow 10L / min, powder feeding speed 50g / min, spraying distance 120mm.

[0107] (3) Spraying a zirconia ceramic coating on the surface of the transition layer obtained in step (2) by using plasma spraying technology to obtain an insulating and heat-insulating...

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Abstract

The invention discloses an electric heating antibacterial coating, which consists of a matrix, a transition layer, an insulation and thermal insulation layer, an electric heating layer and a surface protective layer sequentially from the bottom to top; and the material of the electric heating layer is chosen from at least one of NiCr alloy, NiCrFe alloy, NiFe alloy, NiCu alloy, FeCrAl alloy and AlNiFe. The electric heating antibacterial coating provided by the invention does not require the addition of antibacterial agent, and under the condition of low-voltage electrification, a quick, effective antibacterial effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of antibacterial coatings, in particular to an electrothermal antibacterial coating and a preparation method thereof. Background technique [0002] With the development of society and the improvement of people's living standards, a healthy living environment has increasingly become the goal pursued by human beings. With the continuous improvement of people's research and understanding of environmental microorganisms, while utilizing the beneficial properties of microorganisms, they are also aware of their harmfulness as pathogenic bacteria, thus promoting the development of antibacterial materials. [0003] In nature, there are many substances that have a good function of sterilizing or inhibiting microorganisms, such as some organic compounds with specific groups, some inorganic metal materials and their compounds, some minerals and natural substances. But at present, antibacterial materials refer more to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/08C23C4/073C23C4/11C23C4/134C23C4/131C23C4/129
CPCC23C4/073C23C4/08C23C4/11C23C4/129C23C4/131C23C4/134C23C28/321
Inventor 张波涛龚永锋陈秀勇黄晶周平刘奕所新坤李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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