Unlock instant, AI-driven research and patent intelligence for your innovation.

A long-term corrosion-resistant self-cleaning coating and its preparation method

A self-cleaning coating and corrosion-resistant technology, which is applied in coatings, anti-corrosion coatings, anti-fouling/underwater coatings, etc., can solve the problems of organic system aging, low hardness, and inability to achieve long-term service, and achieve low cost, The effect of simple operation and long-lasting self-cleaning performance

Active Publication Date: 2020-06-16
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the above technical solutions, it is easier to realize the self-cleaning function with organic systems, but there are problems such as the aging of organic systems and low hardness, and it cannot be realized when the service conditions are harsh (such as high temperature 500 ° C, high chlorine environment, particle erosion, etc.). Excellent long-term service

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A long-term corrosion-resistant self-cleaning coating and its preparation method
  • A long-term corrosion-resistant self-cleaning coating and its preparation method
  • A long-term corrosion-resistant self-cleaning coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Preparation of coating materials:

[0051]Add 100g of aluminum powder to 50ml of deionized water successively as inorganic corrosion resistant material (spherical particles, size 500nm), 80g of P25 powder as nano photocatalytic material, 12.5g of PFA as low surface energy material, 12g of chromium oxide as passivator, 80g30wt The % aluminum dihydrogen phosphate aqueous solution is used as a binder, and high-speed stirring and mixing treatment (1000r / min, stirring for 1h) is performed to uniformly disperse and compound the components.

[0052] (2) Substrate pretreatment: Degrease and derust the surface of the substrate material (low carbon steel), and perform sandblasting on the surface.

[0053] (3) Coating preparation: A layer of 100 μm corrosion-resistant self-cleaning coating was prepared on the surface of the pretreated substrate by means of aerosol spraying, and then cured by heating. Among them, the aerosol spraying parameters are air pressure of 0.6Mpa, spra...

Embodiment 2

[0072] (1) Preparation of coating materials:

[0073] Add 80g aluminum powder to 50ml deionized water successively to be inorganic anticorrosion material (spherical particle, size 1μm), 80gP25 powder is nano photocatalytic material, 20g PFA is low surface energy material, 15g sodium silicate is passivating agent, 55g 30 The % aqueous aluminum dihydrogen phosphate solution is used as a binder, and high-speed stirring and mixing treatment (800r / min, stirring for 1h) is performed to uniformly disperse and compound the components.

[0074] (2) Substrate pretreatment: Degrease and derust the surface of the substrate material, and perform sandblasting on the surface.

[0075] (3) Coating preparation: use a brushing roller to paint, prepare a layer of 60 μm inorganic corrosion-resistant photocatalytic coating on the surface of the pretreated substrate, and heat and cure. Among them, the single coating thickness of the brushing roller is 20 μm, and the coating is applied 3 times; the...

Embodiment 3

[0082] (1) Preparation of coating materials:

[0083] Add 80g of zinc powder to 50ml of deionized water successively as inorganic anti-corrosion material (spherical particles, size 1μm), 80g of P25 powder as nano photocatalytic material, 20g of water-based PU as low surface energy material, 12g of sodium silicate as passivator, 60g 30% aqueous aluminum dihydrogen phosphate solution is used as a binder, and high-speed stirring and mixing treatment (1000r / min, stirring for 1h) is performed to uniformly disperse and compound the components.

[0084] (2) Substrate pretreatment: Degrease and derust the surface of the substrate material, and perform sandblasting on the surface.

[0085] (3) Coating preparation: use a brushing roller to paint, prepare a layer of 60 μm inorganic corrosion-resistant photocatalytic coating on the surface of the pretreated substrate, and heat and cure. Among them, the single coating thickness of the brushing roller is 20 μm, and the coating is applied 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a long-acting corrosion-resistant self-cleaning coating and a preparation method thereof. The corrosion-resistant self-cleaning coating comprises the following raw materials bythe weight percentage: 10 to 30% of an inorganic bonding material; 1 to 10% of a passivating agent; 25 to 40% of an inorganic corrosion-resistant material; 25 to 40% of a nano photocatalytic material; and 1 to 10% of a low surface energy material; the inorganic bonding material is selected from an aqueous solution of aluminum dihydrogen phosphate; the passivating agent is selected from at least one of chromium oxide, sodium tungstate, and sodium silicate; the inorganic corrosion-resistant material is selected from aluminum powder and / or zinc powder; the nano photocatalytic material is selected from at least one of nano TiO2 , nano ZnO, and nano MoS2; and the low surface energy material is selected from aqueous PU and / or PFA. The invention discloses the corrosion-resistant self-cleaning coating which is mainly takes inorganic components as a main part, the corrosion-resistant self-cleaning coating has excellent corrosion resistance, has low surface energy properties as a whole, and achieves excellent long-acting self-cleaning performance. .

Description

technical field [0001] The invention relates to the technical field of functional coating protection, in particular to a long-acting corrosion-resistant self-cleaning coating and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, various materials are widely used in various fields in production and life, but a single material will inevitably suffer from corrosion, pollution and other problems during normal use, which will affect the service life of the material . Among them, contamination tends to accelerate corrosion progression. Therefore, high-performance corrosion-resistant coatings and self-cleaning coatings have attracted more and more attention. [0003] At present, there are many studies on corrosion-resistant coatings, especially for surface protective coatings of metal materials. In recent years, self-cleaning coatings have been a hot spot in the research field of surface functional materials, including...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/10C09D5/16
CPCC09D1/00C09D5/103C09D5/106C09D5/1681C09D5/1687
Inventor 黄晶龚永锋周平李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI