Fluorocarbon coating with high flame retardance, tracking resistance and electrical erosion resistance as well as preparation method and application of fluorocarbon coating

A technology of tracking resistance and fluorocarbon coating, which is applied in coatings, fireproof coatings, etc., can solve the problem of fluorocarbon coating resistance to tracking and electrical corrosion, as well as few flame retardant properties, and the application of fluorocarbon coatings Less research and other issues, to achieve the effect of reducing thermal degradation and carbonization, easy to promote, and good flame retardant effect

Inactive 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

Fluorocarbon resins and fluorocarbon coatings are usually used in steel structure anti-corrosion coatings, building exterior wall coatings, aerospace paints and high weather-resistant decorations due to their unique functions such as super weather resistance, heavy anti-corrosion, anti-contamination, flame retardant and antibacterial. However, the inventors found that there are few studies on the application of fluorocarbon coatings in the field of electrical equipment external insulation, and the research on the tracking resistance, electrical corrosion resistance and flame retardancy of fluorocarbon coatings is even more important. very few

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038]The preparation method of the component A is to add the dispersant to butyl acetate, then add the composite flame retardant and the tracking resistant agent for high-power ultrasonic dispersion for 30min-60min, and then pour the dispersion into the grinder It is made by blending and grinding with fluorocarbon resin for 3h-6h, and then sieving the coating through a 1000-mesh ultra-fine screen.

[0039]The fluorocarbon resin is a solvent-based FEVE resin. Preferably, the fluorocarbon resin is a copolymer resin of chlorotrifluoroethylene-alkyl vinyl ether, a copolymer resin of chlorotrifluoroethylene-alkyl vinyl ester, tetrafluoroethylene Ethylene-alkyl vinyl ether copolymer resin, tetrafluoroethylene-alkyl vinyl ester copolymer resin. Compared with polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polyvinyl fluoride (PVF), FEVE resin is soluble in organic solvents and can be cured at room temperature, providing pigments and fillers in the resin solution The good di...

Embodiment 1

[0049]Add 0.2 parts by mass of dispersant to 100 parts by mass of butyl acetate, and then add 50 parts by mass of composite flame retardant (10 parts by mass of zinc borate + 10 parts by mass of coated red phosphorus + 30 parts by mass of hydrogen Alumina) and 20 parts by mass of melamine polyphosphate, high-power ultrasonic dispersion for 30 minutes to obtain a dispersion, and then with 100 parts by mass of fluorocarbon resin blending and grinding for 3 hours, sieving through a 1000-mesh ultrafine screen to obtain a coating Component A. Coating component A and 12 parts by mass of HDI trimer isocyanate were mixed and stirred for 10 minutes, vacuum was drawn for 30 minutes, the vacuum degree was -0.1MPa, 200g was poured into a PTFE mold plate with a diameter of 20cm, and cured at room temperature for 24 hours. The disc sample with a thickness of 2mm is used to cut the sample for tracking resistance test. Take 130g and pour it into a PTFE mold disc with a diameter of 20cm, and cure it...

Embodiment 2

[0055]Add 0.5 parts by mass of dispersant to 100 parts by mass of butyl acetate, and then add 80 parts by mass of composite flame retardant (16 parts by mass of zinc borate + 16 parts by mass of coated red phosphorus + 48 parts by mass of hydrogen Alumina) and 30 parts by mass of polymethyl methacrylate micropowder, high-power ultrasonic dispersion for 30 minutes to obtain a dispersion, and then mixed with 100 parts by mass of fluorocarbon resin for 4 hours, sieved through a 1000-mesh ultra-fine screen Get coating component A. Coating component A and 16 parts by mass of HDI trimer isocyanate were mixed and stirred for 10 minutes, vacuum was drawn for 30 minutes, and the vacuum degree was -0.1MPa, poured into a PTFE mold disk with a diameter of 20 cm, and cured at room temperature for 24 hours. kind.

[0056]The fluorocarbon coating sample prepared in this embodiment has a flame retardant rating of UL94-V0, and its tracking resistance can pass 1A4.5.

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Abstract

The invention relates to a fluorocarbon coating with high flame retardance, tracking resistance and electrical erosion resistance as well as a preparation method and an application of the fluorocarboncoating, and belongs to the field of electrical insulation materials. The 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; 30 to 80 parts of a composite flame retardant; 20 to 80 parts of an anti-creeping tracking agent; and 0.2-1 part of dispersing agent.The application of the fluorocarbon coating in the field of external insulation of power equipment is expanded, and the fluorocarbon coating has excellent tracking resistance and flame retardance, canresist tracking damage and provides safety guarantee. The coating is a fluorocarbon coating with good flame-retardant effect, tracking resistance and electric corrosion resistance, can resist electric corrosion and high-temperature damage caused by the electric corrosion, and opens up the application field of the fluorocarbon coating in the aspect of external insulation of power equipment.

Description

Technical field[0001]The invention belongs to the field of electrical insulation materials, and specifically relates to a fluorocarbon coating with high flame retardancy, tracking resistance and electrical corrosion resistance.Background technique[0002]Disclosure of the background information is only intended to increase the understanding of the overall background of the present invention, and is not necessarily regarded as an acknowledgement or in any form suggesting that the information constitutes the prior art known to those of ordinary skill in the art.[0003]Compared with traditional inorganic insulating materials such as glass and ceramics, polymer insulating materials have gradually become a kind of insulating material that has attracted much attention because of their light weight, low cost, good mechanical properties, and hydrophobic and antifouling properties. Polymer insulating materials are inevitably subjected to the combined effects of various factors such as temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D133/12C09D5/18
CPCC08K2003/026C08K2003/2227C08K2003/387C08L2201/02C09D5/18C09D127/12C08K13/06C08K9/10C08K3/02C08K3/38C08K3/22C08K5/34928C08L33/12
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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