Non-toxic environmentally-friendly oriented electrical steel insulation coating and preparation method thereof

A technology of oriented electrical steel and insulating coating, applied in coatings, anti-corrosion coatings, etc., can solve the problems of heat resistance and poor punching performance, and achieve improved moisture absorption and stickiness, simple preparation method, and good insulation. Effect

Inactive Publication Date: 2016-05-11
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that its heat resistance and punching performance are poor

Method used

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  • Non-toxic environmentally-friendly oriented electrical steel insulation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] According to the following ratio and method, configure the insulating coating provided by the invention:

[0044] Aluminum dihydrogen phosphate, 50%;

[0045] Zinc molybdate, 18%;

[0046] Boric acid, 4%;

[0047] Colloidal silicon dioxide, 10%;

[0048] TiO 2 , ZnO mixed powder, 4%;

[0049] Vinyl acetate, acrylic resin, phenolic resin, 13%;

[0050] Propylene glycol polyethylene oxide polypropylene oxide ether, 0.08%;

[0051] The rest is deionized water

[0052] The specific steps are:

[0053] 1) Al with a molar ratio of 0.2 2 o 3 with H 3 PO4 Mix and stir to make it fully react to obtain Al(H 2 PO 4 ) 3 solution, ready to use;

[0054] 2) After mixing vinyl acetate, acrylic resin, and phenolic resin according to the ratio of 2:1:2, add them into the reactor together with deionized water, and mix well;

[0055] 3) TiO with a particle size of 20-30nm 2 1. After the ZnO powder is mixed according to the ratio of 2:1, it is added to the mixed resin in 2)...

Embodiment 2

[0060] According to the following ratio and method, configure the insulating coating provided by the invention:

[0061] Aluminum dihydrogen phosphate, 45%;

[0062] Zinc molybdate, 22%;

[0063] Boric acid, 6%;

[0064] Colloidal silicon dioxide, 10%;

[0065] TiO 2 , ZnO mixed powder, 5%;

[0066] Vinyl acetate, acrylic resin, phenolic resin, 8%;

[0067] Propylene glycol polyethylene oxide polypropylene oxide ether, 0.03%;

[0068] The rest is deionized water

[0069] The specific steps are:

[0070] 1) Al(OH) with a molar ratio of 0.3 3 with H 3 PO 4 Mix and stir to make it fully react to obtain Al(H 2 PO 4 ) 3 solution, ready to use;

[0071] 2) After mixing vinyl acetate, acrylic resin, and phenolic resin according to the ratio of 1:1:2, add them into the reactor together with deionized water, and mix well;

[0072] 3) TiO with a particle size of 20-30nm 2 1. After the ZnO powder is mixed according to the ratio of 1:1, it is added to the mixed resin in 2)...

Embodiment 3

[0077] According to the following ratio and method, configure the insulating coating provided by the invention:

[0078] Magnesium dihydrogen phosphate, 43%;

[0079] Zinc molybdate, 25%;

[0080] Boric acid, 8%;

[0081] Colloidal silicon dioxide, 8%;

[0082] TiO 2 , MgO mixed powder, 3%;

[0083] Styrene-acrylic resin copolymerization, phenolic resin, 10%;

[0084] Propylene glycol polyethylene oxide polypropylene oxide ether, 0.07%;

[0085] The rest is deionized water

[0086] The specific steps are:

[0087] 1) MgO and H with a molar ratio of 0.45 3 PO 4 Mix and stir to make it fully react to obtain Mg(H 2 PO 4 ) 2 solution, ready to use;

[0088] 2) After mixing styrene-acrylic resin copolymer and phenolic resin according to the ratio of 1:1, add them into the reactor together with deionized water, and mix well;

[0089] 3) TiO with a particle size of 10-20nm 2 After the MgO powder is mixed according to the ratio of 1:1, it is added to the mixed resin in ...

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Abstract

The present invention provides an oriented electrical steel insulation coating and a preparation method thereof, and the coating is prepared from the following ingredients by mass: 35 to 50 % of a metal dihydric phosphate, 16 to 25 % of zinc molybdate, 4 to 10% of boric acid, 5 to 10% of colloidal silicon dioxide, 2 to 5% of nano oxide powder, 2 to 13% of organic resin, 0.01-0.08% of a nonionic surfactant and the balance of water. The oriented electrical steel insulation coating is free from chromium elements, non-toxic and environmentally-friendly, has good insulating property, adhesion property and blanking property, can ensure the coating uniformity, corrosion resistance, and heat resistance, is low in moisture absorption tendency to tacky, can be saved stably for long term, is simple in preparation method and low in requirements on equipment, and industrialization is easy to realize.

Description

technical field [0001] The invention relates to an electrical steel coating, in particular to a non-toxic and environment-friendly oriented electrical steel insulating coating and a preparation method thereof. Background technique [0002] Electrical steel is an important magnetic material. Grain-oriented electrical steel is widely used as the core material of power transformers because of its high magnetic induction and low iron loss. The major task facing industry in the world today is to reduce power consumption. Therefore, it is of great significance to study high-efficiency and energy-saving core materials with low iron loss and high magnetic permeability. [0003] The surface of untreated electrical steel sheets will corrode and rust. The type, process and quality of the coating will have a great impact on the insulation, adhesion, punching properties, corrosion resistance and rust resistance of the electrical steel, thus affecting the performance of the electrical ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D7/12C09D5/25C09D5/08C09D1/00C09D125/08C09D161/06
CPCC09D4/06C08K2201/011C08L2201/08C08L2205/03C09D1/00C09D5/08C09D7/61C09D7/65C09D125/08C09D161/06C08F265/00C08F283/00C08L61/06C08L71/02C08K3/00C08K3/32C08K3/24C08K3/36C08L25/08
Inventor 吴雪杨富尧程灵高洁马光刘洋刘昕陈新韩钰胡卓超孔晓峰
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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