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Super-hydrophobic fluorocarbon coating with high flame retardance and tracking resistance as well as preparation method and application of super-hydrophobic fluorocarbon coating

A technology of tracking resistance and fluorocarbon coating, applied in coatings, anti-fouling/underwater coatings, anti-corrosion coatings, etc., can solve the problem that super-hydrophobic coatings cannot meet the requirements of pollution flashover prevention in the field of external insulation of power equipment, etc. problems, to achieve the effect of simple and feasible maintenance and repair, simple preparation process and simple use method

Pending Publication Date: 2020-12-04
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found that the current super-hydrophobic coating cannot meet the pollution flashover prevention and control requirements in the field of external insulation of power equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The preparation method of the component A is: add the dispersant to butyl acetate, then add reinforcing filler and inorganic flame retardant, carry out high-power ultrasonic dispersion for 30-60 minutes, and then pour the dispersion into the grinder Blend and grind with fluorocarbon resin, add defoamer and leveling agent to the grinding system at the same time, the grinding time is 3h-6h, and then sieve the paint through a 350-mesh ultra-fine screen to obtain the finished product. The high-power ultrasonic frequency is 80Hz.

[0036] The fluorocarbon resin is a solvent-based FEVE resin or a silicone-modified FEVE resin. Preferably, the fluorocarbon resin is a copolymer resin of chlorotrifluoroethylene-alkyl vinyl ether, chlorotrifluoroethylene-alkyl vinyl ether Copolymer resin of ester, copolymer resin of tetrafluoroethylene-alkyl vinyl ether, copolymer resin of tetrafluoroethylene-alkyl vinyl ester. Compared with polytetrafluoroethylene (PTFE), polyvinylidene fluoride...

Embodiment 1

[0055] Add 0.2 parts by mass of dispersant to 100 parts by mass of butyl acetate, add 20 parts by mass of fluorosilane-modified gas-phase nano-silica, and 80 parts by mass of aluminum hydroxide, and perform high-power ultrasonic dispersion for 30 minutes to obtain a dispersion. Pour the dispersion into a grinder and blend it with 100 parts by mass of fluorocarbon resin for grinding. At the same time, add 0.2 parts by mass of defoamer and 0.2 parts by mass of leveling agent to the grinding system, grind for 3 hours, and pass through 350 mesh The screen was used to sieve the paint to prepare paint component A. Paint component A was mixed with 12 parts by mass of HDI trimer isocyanate and stirred for 10 minutes to obtain a fluorocarbon paint, and a vacuum was drawn for 30 minutes with a vacuum degree of -0.1 MPa. It is poured into a PTFE mold plate with a diameter of 20 cm, and after curing at room temperature for 6 hours, it is sprayed with 2 coats of fluorocarbon coating of the...

Embodiment 2

[0058] Add 0.3 parts by mass of dispersant to 100 parts by mass of butyl acetate, add 10 parts by mass of fluorosilane-modified gas-phase nano-silicon oxide, and 60 parts by mass of aluminum hydroxide, and perform high-power ultrasonic dispersion for 30 minutes to obtain a dispersion. Pour the dispersion into a grinder to blend and grind with 100 parts by mass of fluorocarbon resin, and at the same time add 0.3 parts by mass of defoamer and 0.3 parts by mass of leveling agent to the grinding system, grind for 3 hours, and then pass through 350 mesh The screen was used to sieve the paint to prepare paint component A. The paint component A was mixed with 14 parts by mass of HDI trimer isocyanate and stirred for 10 minutes to obtain a fluorocarbon paint, and a vacuum was drawn for 30 minutes with a vacuum degree of -0.1 MPa. It is poured into a PTFE mold plate with a diameter of 20 cm, and after curing at room temperature for 6 hours, it is sprayed with 2 coats of fluorocarbon co...

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Abstract

The invention relates to a super-hydrophobic fluorocarbon coating with high flame retardance and tracking resistance and a preparation method and an application thereof, and belongs to the field of fluorocarbon coating preparation and application, the super-hydrophobic fluorocarbon coating comprises a component A and a curing agent, the component A comprises the following raw materials by weight:100 parts of fluorocarbon resin; 100 parts of butyl acetate; 10 to 30 parts of a reinforcing filler; 50 to 100 parts of an inorganic flame retardant; 0.2-1 part of a dispersing agent; 0.1 to 0.5 partof an antifoaming agent; and 0.1-0.5 part of leveling agent. The problems of insufficient hydrophobicity, serious pollution accumulation, poor aging resistance and the like of the existing silicone rubber anti-pollution flashover coating are effectively solved, and compared with common silicone rubber coatings, the silicone rubber anti-pollution flashover coating has super hydrophobicity, can resist electric corrosion and high-temperature damage caused by the electric corrosion, and opens up the application of fluorocarbon coatings in the field of insulation in outdoor or harsh environments.

Description

technical field [0001] The invention belongs to the field of fluorocarbon coating preparation and application, and in particular relates to a super-hydrophobic fluorocarbon coating with high flame retardancy and tracking resistance and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Silicone rubber is widely used in the prevention and control of pollution flashover in the field of external insulation of power equipment because of its good hydrophobicity and hydrophobicity, so that it will not form continuous water bands on the surface after being polluted. However, the existing silicone rubber coatings have problems such as insufficient hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D5/08C09D5/16C09D5/18C09D5/25C09D7/62
CPCC08K2003/2224C08K2003/2227C08K2201/011C08K2201/014C08L2201/02C09D5/00C09D5/08C09D5/1668C09D5/1687C09D5/18C09D127/12C08K13/06C08K9/06C08K3/36C08K3/22C08K3/34
Inventor 宗立君吴亚平李辛庚姜波王晓明米春旭李文静樊志彬郭凯赵洺哲王倩
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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