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Insulating composite paint of nanometer inorganic matter and polymer and its prepn

A composite insulation and inorganic nanotechnology, applied in epoxy resin coatings, coatings, etc., can solve the problems of difficult dispersion of nanoparticles, poor dispersion efficiency, etc., achieve high breakdown strength and anti-flashover characteristics, and improve the dispersion effect , the effect of reducing usage

Inactive Publication Date: 2007-08-22
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using technical means to overcome the defects of difficult dispersion of nanoparticles and low dispersion efficiency and poor effect in the existing technology

Method used

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  • Insulating composite paint of nanometer inorganic matter and polymer and its prepn

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] With 8% (weight percentage) KH550 long carbon chain type modified amino silane coupling agent surface modification, particle diameter is the SiO of 10nm 2 Inorganic nanoparticles and epoxy resin E44 are mixed according to the mass ratio of nanoparticles and polymer precursors at 5:100, and after adding organic solvent acetone, disperse at 70°C for 60 minutes to obtain a stable suspension; vacuum at 100°C Process to remove solvent and gas; finally, cure at 220°C for 6 hours to obtain an insulating coating.

Embodiment 2

[0021] With 8% (percentage by weight) KH550 long carbon chain type modified aminosilane coupling agent surface modification, the TiO particle size is 10nm 2 Inorganic nanoparticles and epoxy resin E44 are mixed according to the mass ratio of nanoparticles and polymer precursors at 5:100, and after adding organic solvent acetone, disperse at 70°C for 60 minutes to obtain a stable suspension; vacuum at 100°C Process to remove solvent and gas; finally, cure at 220°C for 12 hours to obtain an insulating coating.

Embodiment 3

[0023] With 8% (percentage by weight) KH550 long carbon chain type modified aminosilane coupling agent surface modification, particle diameter is the Al of 10nm 2 o 3 Inorganic nanoparticles and epoxy resin E44 are mixed according to the mass ratio of nanoparticles and polymer precursors at 5:100, and after adding organic solvent acetone, disperse at 70°C for 60 minutes to obtain a stable suspension; vacuum at 100°C Process to remove solvent and gas; finally, cure at 220°C for 4 hours to obtain an insulating coating.

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Abstract

The present invention relates to one kind of nanometer inorganic matter / polymer composite insulating paint for electric power apparatus and protecting equipment and its preparation process, and belongs to the field of chemical paint technology and electric insulating technology. The paint consists of one to three kinds of nanometer inorganic materials, including SiO2, TiO2, Al2O3, ZnO, CuO and Fe2O3; one polymer of epoxy resin, polyimide and organopolysiloxane; and coupling agent, in the weight ratio of (1-8) to 100 to (0.02-0.08). Its preparation process includes mixing the nanometer particle with coupling agent, adding the polymer, adding organic solvent, ultrasonic dispersing at 50-100 deg.c to obtain stable suspension, and vacuum treatment at 80-120 deg.c to eliminate solvent and gas to obtain the composite insulating paint. The composite insulating paint may be cured at 120-300 deg.c for 5-18 hr to obtain insulating coating.

Description

technical field [0001] The invention relates to an inorganic nanometer / polymer composite insulating coating used for electric equipment and its protection device and a preparation method thereof, belonging to the technical fields of chemical coating technology and electrical insulation technology. Background technique [0002] Coating insulating paint on the surface of power equipment and its protective devices can significantly improve the external insulation properties and anti-flashover properties of the equipment, greatly improve the operation reliability and equipment cost of the power system, and has important application value. [0003] At present, there are mainly two types of surface insulating protective layer: organic insulating material and inorganic high-resistance layer, or an organic insulating protective layer is added on top of the inorganic high-resistance layer. For example, EP0060738 and US5547907 have proposed some formulations and coating methods of ino...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D179/08C09D183/04C09D5/25
Inventor 郑嘹赢程丽红李国荣殷庆瑞
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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