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Organic-inorganic composite chromium-free silicon steel sheet insulating coating

An inorganic composite and insulating coating technology, applied in the coating and other directions, can solve the problems of chromium-silicon steel sheet insulating coating containing toxic chromium, low surface insulation coefficient of organic coating, poor punching performance of inorganic coating, etc. Layer punching properties, effects of improving heat resistance and hardness, and enhancing heat resistance and insulation

Inactive Publication Date: 2019-09-27
嘉兴菱凡贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an organic-inorganic composite chromium-free silicon steel sheet insulating coating, which solves the problem that the chromium silicon steel sheet insulating coating contains the toxic substance chromium, and at the same time solves the problem of poor punching performance of the inorganic coating and the The problem of low insulation coefficient and poor heat resistance of organic coating surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] An organic-inorganic composite chromium-free silicon steel sheet insulating coating, comprising the following raw materials in proportions by weight: 10-15 parts of isooctyl phosphate, 10-15 parts of tetrathioammonium tungstate, 5-15 parts of triisohard Fatty acyl titanate isopropyl ester, 5-10 parts of glycerin, 5-10 parts of silicone acrylic resin, 10-15 parts of acrylic resin, 0.7-1 part of vinyl triethoxysilane, 1-3 parts of sodium silicate, 10- 15 parts of silica sol, 10-15 nanometer TiO2, 1-3 parts of copolymer anti-settling agent, 1-3 parts of polyacrylate dispersant, described isooctyl phosphate is 2-ethylhexyl phosphate, monoester and Diester blends, which can be used as the main component of organic insulating coatings. Compared with traditional phosphate inorganic coatings, isooctyl phosphate has better insulation and heat insulation effects. In ammonium tetrathiotungstate (NH 4 ) 2 WS 4 The content is 95-98%, which can replace toxic chromic anhydride, so a...

Embodiment 1

[0030] (1) Weigh 10 parts of isooctyl phosphate and 5 parts of glycerin into a high-speed stirrer successively, stir at a constant speed for 30 minutes, then add 1 part of sodium silicate, 10 parts of silica sol, and 10 nanometers of TiO in turn, and stir rapidly for 1 hour;

[0031] (2) Weigh 10 parts of ammonium tetrathiotungstate and 5 parts of isopropyl triisostearyl titanate, and add them in a high-speed mixer in turn to stir evenly for 1 hour. After the materials are evenly mixed, then add 5 parts of silicon acrylic acid Resin, 10 parts of acrylic resin, 0.7 part of vinyltriethoxysilane, stirred at a constant speed for 1 hour;

[0032] (3) 1 part of copolymer anti-settling agent and 1 part of polyacrylate dispersant were weighed and added to a high-speed stirrer and stirred rapidly for 2 hours to prepare component 1 of organic-inorganic composite chromium-free silicon steel sheet insulating coating.

Embodiment 2

[0033] Embodiment 2: (1) take by weighing 10 parts of isooctyl phosphate, 6 parts of glycerin are added in the high-speed stirrer successively, stir at a constant speed for 30min, then add 2 parts of sodium silicate, 10 parts of silica sol, 10-15 nanometer TiO in turn, Stir rapidly for 1h;

[0034] (2) Weigh 10 parts of ammonium tetrathiotungstate and 7 parts of isopropyl triisostearyl titanate, and add them to a high-speed mixer in turn and stir for 1 hour. After the materials are evenly mixed, then add 6 parts of silicon acrylic acid Resin, 10 parts of acrylic resin, 0.7 part of vinyltriethoxysilane, stirred at a constant speed for 1 hour;

[0035] (3) Weighing 1 part of copolymer anti-settling agent and 1 part of polyacrylate dispersant were added to a high-speed stirrer and stirred rapidly for 2 hours to prepare component 2 of organic-inorganic composite chromium-free silicon steel sheet insulating coating.

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Abstract

The invention relates to the technical field of preparation of insulating coatings, and discloses an organic-inorganic composite chromium-free silicon steel sheet insulating coating. The organic-inorganic composite chromium-free silicon steel sheet insulating coating is prepared from the following raw materials in parts by weight: 2-ethyl hexyl phosphate, ammonium tetrathiotungstate, isopropyl tri-isostearoyl titanate, glycerol, silicone acrylic resin, acrylic resin, triethoxyvinylsilane, sodium silicate, silica sol, nano TiO2, a copolymer anti-settling agent and a polyacrylate dispersing agent. The organic-inorganic composite chromium-free silicon steel sheet insulating coating has the advantages that the 2-ethyl hexyl phosphate can serve as a main component of an organic insulating coating layer, compared with a traditional phosphate inorganic coating layer, the 2-ethyl hexyl phosphate has better insulating effect and and better thermal insulation effect, toxic chromic anhydride can be replaced in the ammonium tetrathiotungstate, and therefore, a chromium-free insulating coating layer is prepared, the appearance, the magnetic property and the corrosion resistance of the coating layer are obviously improved, and the silicone acrylic resin and the acrylic resin serve as the organic coating layer.

Description

technical field [0001] The invention relates to the technical field of insulating paint preparation, in particular to an organic-inorganic composite chromium-free silicon steel sheet insulating paint. Background technique [0002] Insulating coatings are excellent electrical insulating coatings with good electrical properties, thermal properties, mechanical properties and chemical properties. According to their uses, they can be divided into: impregnated insulating varnish, enameled wire varnish, covering insulating varnish, bonding insulating varnish, special insulating varnish, and Silicon steel sheet varnish used as insulating layer of silicon steel sheet. [0003] At present, in silicon steel sheet paint, the formulation of chromate-based insulating coatings has been developed and mature, and has excellent performance in terms of insulation, adhesion, and corrosion resistance. However, hexavalent chromium is highly toxic and environmentally toxic, and is a It is an envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/25C09D7/61C09D7/63
CPCC08K2003/2241C08L2201/08C09D5/00C09D7/61C09D7/63C09D7/67C09D133/04C08L43/04C08L33/04C08L77/00C08K13/06C08K5/521C08K3/30C08K5/10C08K3/36C08K3/22
Inventor 陈炜姬芳芳万惠林
Owner 嘉兴菱凡贸易有限公司
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