Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Composite coating layer with hydrophobicity and wear resistance as well as preparation method and application thereof

A composite coating and wear-resistant technology, applied in the field of polymer chemical materials, to achieve the effect of enhancing the microstructure, reducing the possibility of icing, and reducing friction

Pending Publication Date: 2020-08-07
CHINA UNIV OF GEOSCIENCES (BEIJING)
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a composite coating having both hydrophobicity and abrasion resistance, a preparation method and an application thereof. The composite coating of the present invention is a polytetrafluoroethylene coating containing cerium oxide. The coating has both hydrophobicity and wear resistance. It is used on the surface of cutting tools and drill bits, which can significantly improve the problems of drilling tools icing and wear resistance in polar ice core drilling.

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
  • Composite coating layer with hydrophobicity and wear resistance as well as preparation method and application thereof
  • Composite coating layer with hydrophobicity and wear resistance as well as preparation method and application thereof
  • Composite coating layer with hydrophobicity and wear resistance as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing a composite coating having both hydrophobicity and wear resistance, comprising the following steps:

[0042] 1. Coating preparation

[0043] 165 parts by mass of an aqueous polytetrafluoroethylene emulsion (which contains 99 parts by mass of polytetrafluoroethylene), and 1 part by mass of ceria particles with a particle diameter of 500 nm were dispersed for 20 minutes until uniform using a sand mill. The list of ingredients is shown in Table 1 and Table 2.

[0044] 2. Workpiece surface pretreatment

[0045] In order to make the workpiece coating have sufficient surface adhesion, first use an organic solvent to dissolve the grease on the surface of the workpiece and heat it to about 400°C to volatilize it, and then use sandblasting to clean the surface of the workpiece and obtain a certain roughness on the surface to improve The ability of the coating to bond to the surface of the workpiece.

[0046] 3. Spraying

[0047] Put the paint into the ...

Embodiment 2

[0053] A method for preparing a composite coating having both hydrophobicity and wear resistance, comprising the following steps:

[0054] 1. Coating preparation

[0055] 162 parts by mass of an aqueous emulsion of polytetrafluoroethylene (containing 97 parts by mass of polytetrafluoroethylene) and 3 parts by mass of ceria particles with a particle diameter of 500 nm were dispersed for 20 minutes until uniform using a sand mill. The list of ingredients is shown in Table 1 and Table 2.

[0056] 2. Workpiece surface pretreatment

[0057] In order to make the workpiece coating have sufficient surface adhesion, first use an organic solvent to dissolve the grease on the surface of the workpiece and heat it to about 400°C to volatilize it, and then use sandblasting to clean the surface of the workpiece and obtain a certain roughness on the surface to improve The ability of the coating to bond to the surface of the workpiece.

[0058] 3. Spraying

[0059] Put the paint into the A...

Embodiment 3

[0065] A method for preparing a composite coating having both hydrophobicity and wear resistance, comprising the following steps:

[0066] 1. Coating preparation

[0067] 158 parts by mass of polytetrafluoroethylene emulsion (which contains 95 parts by mass of polytetrafluoroethylene) and 5 parts by mass of ceria particles with a particle diameter of 500 nm were dispersed for 20 minutes until uniform using a sand mill. The list of ingredients is shown in Table 1 and Table 2.

[0068] 2. Workpiece surface pretreatment

[0069] In order to make the workpiece coating have sufficient surface adhesion, first use an organic solvent to dissolve the grease on the surface of the workpiece and heat it to about 400°C to volatilize it, and then use sandblasting to clean the surface of the workpiece and obtain a certain roughness on the surface to improve The ability of the coating to bond to the surface of the workpiece.

[0070] 3. Spraying

[0071] Put the paint into the ANESTIWATA ...

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
thicknessaaaaaaaaaa
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of polymer chemical materials, and provides a composite coating layer with hydrophobicity and wear resistance; the composite coating layer is formed by dispersing cerium dioxide in polytetrafluoroethylene, and the thickness range of the composite coating layer is 20-40 [mu]m; the content of cerium dioxide in the composite coating layer is 1-15 parts bymass, and the particle size range of cerium dioxide is 100 nm to 2 [mu]m; the content of polytetrafluoroethylene is 85-99 parts by mass. The preparation method of the composite coating layer comprisesthe steps: carrying out sand blasting treatment on a to-be-coated surface (such as a cutting edge of an ice layer coring drilling tool and the surface of a drill bit body) to remove a surface oxide layer, so that the surface has certain cleanliness and roughness, the mechanical property is improved, and the adhesive force between the surface and the coating layer is improved; cerium dioxide powder is dispersed into a polytetrafluoroethylene aqueous emulsion, and then the cerium dioxide / polytetrafluoroethylene composite coating layer with hydrophobicity and abrasion resistance is obtained on the to-be-coated workpiece surface through the surface engineering technology.

Description

technical field [0001] The present invention generally relates to the technical field of polymer chemical materials, in particular to a composite coating having both hydrophobicity and wear resistance, a preparation method and an application. Background technique [0002] Polar science and technology research is to explore the earth system and its changes. The polar ice contains a lot of information about the history of development, the history and laws of the earth's climate change, and this information is an important basis for predicting and responding to global climate change. [0003] There are still some important scientific problems to be solved in the drilling technology for obtaining polar ice cores. One of them is that when the core drilling tool drills into the warm ice layer, the cutting tool and the bit body will freeze, which will seriously affect the drilling efficiency. and device security. The traditional method of using ethanol water solution or coating Te...

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 Applications(China)
IPC IPC(8): C09D127/18C09D7/61B05D5/00B05D5/08B05D7/24B05D3/02E21B7/00E21B10/55
CPCB05D3/0272B05D5/00B05D5/083B05D7/24B05D2506/15C08K2003/2213C08K2201/003C09D127/18C09D7/61E21B7/008E21B10/55C08K3/22
Inventor 朱丽娜岳文邵晓燕康嘉杰王海斗马国政邢志国王成彪付志强田斌佘丁顺孟德忠秦文波梁健翁炜冯美贵
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com