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Insulating coating solution and use thereof in silicon steel

A technology of insulating coating and solution, applied in the direction of coating, etc., to achieve the effect of eliminating environmental protection problems, small power loss between layers, and excellent adhesion

Active Publication Date: 2009-04-15
上海迪升防腐新材料科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the fact that the coating solution in the prior art contains elements such as chromium and has various defects such as environmental protection and uniformity, it is now particularly necessary to develop an environmentally friendly semi-inorganic insulating coating for cold-rolled non-oriented electrical steel

Method used

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  • Insulating coating solution and use thereof in silicon steel
  • Insulating coating solution and use thereof in silicon steel
  • Insulating coating solution and use thereof in silicon steel

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Embodiment Construction

[0024] The insulating coating solution prepared according to the formula shown in Table 1 was coated on the steel plate and heat-treated at 550° C. for 30 seconds to obtain a silicon steel plate with an insulating coating film with a thickness of 1.5 μm.

[0025] The specific preparation steps are as follows: according to the formula ratio in Table 1, add the corresponding amount of polyurethane-acrylate-ethylene oxide resin into a 500ml three-necked flask, and then add the corresponding amount of aluminum dihydrogen phosphate, magnesium nitrate, colloid Silicon dioxide, nonionic surfactant and deionized water are stirred evenly to prepare a coating solution.

[0026] The formula of each composition is as shown in table 1:

[0027] Table 1 Composition of Coating Solution Components

[0028]

[0029]

[0030] (Note: A polyurethane-acrylate-ethylene oxide resin, B is aluminum dihydrogen phosphate, C is magnesium nitrate, D is colloidal silicon dioxide, E is non-ionic surf...

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Abstract

The invention relates to insulating coating solution and an application thereof in silicon steel. The invention discloses the insulating coating solution for the silicon steel, the chemical components and the corresponding weight percentages thereof of the coating solution on the basis of the total weight of the coating solution are as follows: 5-25 percent polyurethane-acrylic ester-ethylene oxide resin; 10-40 percent aluminum dihydrogen phosphate; 5-20 percent magnesium nitrate; 10-30 percent colloidal silica; 1-5 percent non-ionic surfactant; and deionized water as the rest. The insulating coating solution can not only totally eliminate the environmental problem caused by chromium element, but can also ensure uniformity, decay resistance, heat resistance and other performances of the coating to be good.

Description

technical field [0001] The invention relates to an insulating coating solution for silicon steel, in particular to an environment-friendly organic-inorganic mixed coating solution composition for forming an insulating film and application thereof. Background technique [0002] Silicon steel insulating coating is a thin layer of insulating coating composed of inorganic / organic resin coated on the surface of silicon steel. It can ensure that the silicon steel has a high surface resistivity, minimize the power loss between layers, and protect the silicon steel from corrosion and corrosion of various corrosive media. Insulating coatings on the surface of silicon steel mainly include organic coatings, inorganic coatings and semi-inorganic coatings. The general development trend is that organic coatings have been gradually eliminated, and inorganic coatings will gradually replace semi-inorganic coatings. However, due to the limitations of various conditions and the properties of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D151/08C09D5/25
Inventor 王晨齐素芳陈正中廖波
Owner 上海迪升防腐新材料科技有限公司
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