WO2018119979A1 - Insulating coating for electrical steel surfaces - Google Patents

Insulating coating for electrical steel surfaces Download PDF

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Publication number
WO2018119979A1
WO2018119979A1 PCT/CN2016/113367 CN2016113367W WO2018119979A1 WO 2018119979 A1 WO2018119979 A1 WO 2018119979A1 CN 2016113367 W CN2016113367 W CN 2016113367W WO 2018119979 A1 WO2018119979 A1 WO 2018119979A1
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parts
epoxy resin
insulating coating
electrical steel
insulating
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PCT/CN2016/113367
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French (fr)
Chinese (zh)
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黄响华
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黄响华
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Priority to PCT/CN2016/113367 priority Critical patent/WO2018119979A1/en
Publication of WO2018119979A1 publication Critical patent/WO2018119979A1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints

Definitions

  • the present invention relates to an insulating coating for electrical steel surfaces.
  • Electrical steel is a ferrosilicon soft magnetic alloy with extremely low carbon content, which is mainly used in the manufacture of electrical equipment such as electric motors, generators, and transformer cores.
  • the iron loss of electrical steel is the main indicator to measure the performance of electrical steel products.
  • the iron loss mainly includes three parts: hysteresis loss, eddy current loss and abnormal loss.
  • it is generally required to press into a core shape of the core, and the laminate is fixed by riveting or welding.
  • the surface of the non-oriented silicon steel sheet generally has an insulating coating to provide a high level of interlayer resistance, so that the eddy current loss of the stator is minimized after the silicon steel sheets are stacked into the stator material; the insulating coating is generally referred to as none.
  • Oriented coating should have good adhesion to ensure that the silicon steel sheet is smashed, and the insulating coating does not fall off the edge of the silicon steel sheet; the insulating coating should not be excessively pulverized during stamping, grooving or shearing, preventing accumulation On feed rolls or other equipment, wear the mold for stamping or shearing the lamination; the same should allow for core welding at a reasonable speed.
  • the insulating coating applied on the surface of non-oriented silicon steel can be divided into organic coating, inorganic coating and organic-inorganic composite coating, wherein the organic-inorganic composite coating combines the excellent punching property and pure inorganic coating of pure organic coating. It has excellent heat resistance and weldability, and it can meet the needs of users of the widest range, so it has been widely used.
  • the technical problem to be solved by the present invention is to provide an insulating coating for the surface of an electrical steel.
  • the present invention provides an electrical insulating coating for the surface of electrical steel, including the following raw material components by weight: 40-60 parts of epoxy resin; 15-23 parts of alcohol-soluble resin, 5-12 parts of melamine formaldehyde resin 30-40 parts of dihydrogen phosphate; 5-14 parts of drier; 5-13 parts of solid catalyst; 10-13 parts of insulating aid; 30-40 parts of ethanol, 25-35 parts of deionized water.
  • the epoxy resin of the present invention is selected from the group consisting of water-soluble epoxy resins or epoxy resin emulsions.
  • the drier is selected from the group consisting of histamine dihydrochloride, a semicarbazide hydrochloride, acetamidine hydrochloride, piperazine dihydrochloride, and aca hydrochloride.
  • the solid catalyst is selected from one of colloidal silica, diatomaceous earth, and kaolin.
  • the insulating auxiliary of the present invention is selected from one of m-methylbenzoic acid, vinyltriethoxysilane, and 2-amino-4-chlorobenzothiazole.
  • Preparation and application of the present invention The above components are mixed at a normal temperature, and then stirred at a low speed by a stirring device to make a homogeneous phase solution, coated on the surface of the electrical steel by a roll coater, heated by an open flame burner and hot air.
  • the recycling method is carried out to form a film, and a heating section of different temperatures is set to obtain a good coating, and the film is cured at a filming time of 90 to 200 seconds, thereby ensuring excellent adhesion and insulation of the coating.
  • the surface coating of the electrical steel prepared by the production process of the invention has uniform film thickness, good adhesion, excellent insulation, corrosion resistance, weldability, manufacturability and scratch resistance. Used for electrical steel coating.
  • the insulating coating for the surface of the electrical steel provided by the embodiment includes the following raw material components by weight: 40 parts of epoxy resin; 15 parts of alcohol-soluble resin, 5 parts of melamine formaldehyde resin; aluminum dihydrogen phosphate 30 parts; 5 parts of drier; 5 parts of solid catalyst; 10 parts of insulating aid; 30 parts of ethanol, 25 parts of deionized water.
  • the epoxy resin of this embodiment is selected from water-soluble epoxy resins.
  • the drier is selected from the group consisting of histamine dihydrochloride.
  • the solid catalyst is selected from the group consisting of colloidal silica.
  • the insulating auxiliary of the present embodiment is selected from the group consisting of m-methylbenzoic acid.
  • the insulating coating for the surface of the electrical steel provided by the embodiment includes the following raw material components by weight: 60 parts of epoxy resin; 23 parts of alcohol-soluble resin, 12 parts of melamine formaldehyde resin; aluminum dihydrogen phosphate 40 copies 14 parts of drier; 13 parts of solid catalyst; 13 parts of insulating aid; 40 parts of ethanol, 35 parts of deionized water.
  • the epoxy resin of this embodiment is selected from the group consisting of epoxy resin emulsions.
  • the drier is selected from the group consisting of semicarbazide hydrochloride.
  • the solid catalyst is selected from the group consisting of diatomaceous earth.
  • the insulating auxiliary of the present embodiment is selected from the group consisting of vinyl triethoxysilane.
  • the insulating coating for the surface of the electrical steel provided by the embodiment includes the following raw material components in parts by weight: 52 parts of epoxy resin; 19 parts of alcohol-soluble resin, 10 parts of melamine formaldehyde resin; aluminum dihydrogen phosphate 38 parts; 10 parts of drier; 10 parts of solid catalyst; 11 parts of insulating agent; 33 parts of ethanol, 30 parts of deionized water.
  • the epoxy resin of this embodiment is selected from water-soluble epoxy resins.
  • the drier is selected from the group consisting of Aka Hydrochloride.
  • the solid catalyst is selected from the group consisting of kaolin.
  • the insulating auxiliary of this embodiment is selected from the group consisting of 2-amino-4-chlorobenzothiazole.
  • Example 4 Test samples for insulation properties.
  • Adhesion test GB 2522-88.
  • Weldability test conditions inert gas tungsten machine protection welding (TIG), current value 120A, electrode material Th-W, argon flow rate 6L/min, pressure 50kg/cm2.
  • Corrosion resistance test JIS Z2371.
  • Appearance surface bright surface bright surface bright fire dryness cm/min less than 50 less than 50 less than 50 less than 50 The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should make changes, modifications, additions or substitutions within the scope of the present invention. The scope of protection of the present invention.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

An insulating coating for electrical steel surfaces comprises the following raw material components in parts by weight: 40-60 parts of an epoxy resin, 15-23 parts of an alcohol soluble resin, 5-12 parts of a melamine formaldehyde resin, 30-40 parts of aluminum dihydrogen phosphate, 5-14 parts of a drier, 5-13 parts of a solid catalyst, 10-13 parts of an insulating additive, 30-40 parts of ethanol, and 25-35 parts of deionized water. Therein, the epoxy resin is selected from a water-soluble epoxy resin or an epoxy resin emulsion. The prepared electrical steel has a thick coating on the surface thereof with uniform film thickness, good adhesion, and excellent insulation, corrosion resistance, weldability, manufacturability, and scratch resistance.

Description

电工钢表面用绝缘涂层 技术领域  Insulation coating for electrical steel surface
[0001] 本发明涉及电工钢表面用绝缘涂层。  [0001] The present invention relates to an insulating coating for electrical steel surfaces.
背景技术  Background technique
[0002] 电工钢是一种含碳量极低的硅铁软磁合金， 其主要用于制造电动机、 发电机、 变压器铁心等电器设备。 电工钢的铁损是衡量电工钢产品性能的主要指标， 铁 损主要包括磁滞损耗、 涡流损耗和反常损耗三部分。 无取向硅钢在后续加工吋 一般需要冲压成铁芯形状的坯料， 叠片后通过铆接或焊接的方式固定。 无取向 硅钢片表面一般要有一层绝缘涂层， 以提供一个高水平的层间电阻， 使得硅钢 片在冲片叠装成定子材料后， 定子的涡流损耗最小； 该绝缘涂层一般称为无取 向涂层。 无取向涂层应该具有良好的附着性， 以保证硅钢片在冲片吋， 绝缘涂 层不会从硅钢片边缘脱落； 绝缘涂层在冲压、 幵槽或剪断吋不应过度粉化， 防 止堆积在进料辊或其它设备上， 磨损用于冲压或剪切叠片的模具； 同吋应该允 许以合理的速度进行铁心焊接。 涂敷在无取向硅钢表面的绝缘涂层可分为有机 涂层、 无机涂层和有机无机复合涂层， 其中有机无机复合涂层综合了纯有机涂 层的优良冲片性和纯无机涂层的优良耐热性和焊接性， 能够满足最大范围的用 户的需要， 故得到了广泛的应用。  [0002] Electrical steel is a ferrosilicon soft magnetic alloy with extremely low carbon content, which is mainly used in the manufacture of electrical equipment such as electric motors, generators, and transformer cores. The iron loss of electrical steel is the main indicator to measure the performance of electrical steel products. The iron loss mainly includes three parts: hysteresis loss, eddy current loss and abnormal loss. In the subsequent processing of non-oriented silicon steel, it is generally required to press into a core shape of the core, and the laminate is fixed by riveting or welding. The surface of the non-oriented silicon steel sheet generally has an insulating coating to provide a high level of interlayer resistance, so that the eddy current loss of the stator is minimized after the silicon steel sheets are stacked into the stator material; the insulating coating is generally referred to as none. Oriented coating. The non-oriented coating should have good adhesion to ensure that the silicon steel sheet is smashed, and the insulating coating does not fall off the edge of the silicon steel sheet; the insulating coating should not be excessively pulverized during stamping, grooving or shearing, preventing accumulation On feed rolls or other equipment, wear the mold for stamping or shearing the lamination; the same should allow for core welding at a reasonable speed. The insulating coating applied on the surface of non-oriented silicon steel can be divided into organic coating, inorganic coating and organic-inorganic composite coating, wherein the organic-inorganic composite coating combines the excellent punching property and pure inorganic coating of pure organic coating. It has excellent heat resistance and weldability, and it can meet the needs of users of the widest range, so it has been widely used.
技术问题  technical problem
[0003] 本发明所要解决的技术问题是： 提供一种电工钢表面用绝缘涂层。  The technical problem to be solved by the present invention is to provide an insulating coating for the surface of an electrical steel.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0004] 为解决上述技术问题， 本发明采用的技术方案是： [0004] In order to solve the above technical problem, the technical solution adopted by the present invention is:
[0005] 本发明提供的电工钢表面用绝缘涂层， 包括以下按照重量份数的的原料组分: 环氧树脂 40-60份； 醇溶性树脂 15-23份， 三聚氰胺甲醛树脂 5-12份； 磷酸二氢 30-40份; 催干剂 5-14份； 固体催化剂 5-13份； 绝缘助剂 10-13份； 乙醇 30-40份， 去离子水 25-35份。 [0006] 本发明的环氧树脂选自水溶性环氧树脂或环氧树脂乳液。 [0005] The present invention provides an electrical insulating coating for the surface of electrical steel, including the following raw material components by weight: 40-60 parts of epoxy resin; 15-23 parts of alcohol-soluble resin, 5-12 parts of melamine formaldehyde resin 30-40 parts of dihydrogen phosphate; 5-14 parts of drier; 5-13 parts of solid catalyst; 10-13 parts of insulating aid; 30-40 parts of ethanol, 25-35 parts of deionized water. The epoxy resin of the present invention is selected from the group consisting of water-soluble epoxy resins or epoxy resin emulsions.
[0007] 催干剂选自组胺二盐酸盐， 氨基脲盐酸盐、 乙脒盐酸盐、 哌嗪二盐酸盐、 阿卡 盐酸盐中的一种。  The drier is selected from the group consisting of histamine dihydrochloride, a semicarbazide hydrochloride, acetamidine hydrochloride, piperazine dihydrochloride, and aca hydrochloride.
[0008] 固体催化剂选自胶体二氧化硅、 硅藻土、 高岭土中的一种。  The solid catalyst is selected from one of colloidal silica, diatomaceous earth, and kaolin.
[0009] 本发明的绝缘助剂选自间甲基苯甲酸、 乙烯基三乙氧基硅烷、 2-氨基 -4-氯苯并 噻唑中的一种。  The insulating auxiliary of the present invention is selected from one of m-methylbenzoic acid, vinyltriethoxysilane, and 2-amino-4-chlorobenzothiazole.
[0010] 本发明制备及应用： 常温下将上述各组分混合后采用搅拌装置低速搅拌使之成 为均一相的溶液， 采用辊涂机涂敷于电工钢的表面， 采用明火烧嘴加热和热风 循环的方法进行涂层成膜， 并设置不同温度的加热段， 以获得良好的涂层， 固 化成膜吋间在 90-200秒， 从而保证涂层具有优异的附着性和绝缘性。  [0010] Preparation and application of the present invention: The above components are mixed at a normal temperature, and then stirred at a low speed by a stirring device to make a homogeneous phase solution, coated on the surface of the electrical steel by a roll coater, heated by an open flame burner and hot air. The recycling method is carried out to form a film, and a heating section of different temperatures is set to obtain a good coating, and the film is cured at a filming time of 90 to 200 seconds, thereby ensuring excellent adhesion and insulation of the coating.
发明的有益效果  Advantageous effects of the invention
有益效果  Beneficial effect
[0011] 采用本发明的生产工艺制备的电工钢表面厚涂层， 膜厚均匀， 附着性好， 具有 优异的绝缘性、 耐腐蚀性、 焊接性、 可制造性， 抗划擦性强， 可以用于电工钢 涂层。  [0011] The surface coating of the electrical steel prepared by the production process of the invention has uniform film thickness, good adhesion, excellent insulation, corrosion resistance, weldability, manufacturability and scratch resistance. Used for electrical steel coating.
实施该发明的最佳实施例  BEST MODE FOR CARRYING OUT THE INVENTION
本发明的最佳实施方式  BEST MODE FOR CARRYING OUT THE INVENTION
[0012] 实施例 1  Embodiment 1
[0013] 本实施例提供的电工钢表面用绝缘涂层， 包括以下按照重量份数的的原料组分 ： 环氧树脂 40份； 醇溶性树脂 15份， 三聚氰胺甲醛树脂 5份； 磷酸二氢铝 30份； 催干剂 5份； 固体催化剂 5份； 绝缘助剂 10份； 乙醇 30份， 去离子水 25份。  [0013] The insulating coating for the surface of the electrical steel provided by the embodiment includes the following raw material components by weight: 40 parts of epoxy resin; 15 parts of alcohol-soluble resin, 5 parts of melamine formaldehyde resin; aluminum dihydrogen phosphate 30 parts; 5 parts of drier; 5 parts of solid catalyst; 10 parts of insulating aid; 30 parts of ethanol, 25 parts of deionized water.
[0014] 本实施例的环氧树脂选自水溶性环氧树脂。  [0014] The epoxy resin of this embodiment is selected from water-soluble epoxy resins.
[0015] 催干剂选自组胺二盐酸盐。  [0015] The drier is selected from the group consisting of histamine dihydrochloride.
[0016] 固体催化剂选自胶体二氧化硅。  [0016] The solid catalyst is selected from the group consisting of colloidal silica.
[0017] 本实施例的绝缘助剂选自间甲基苯甲酸。  [0017] The insulating auxiliary of the present embodiment is selected from the group consisting of m-methylbenzoic acid.
[0018] 实施例 2  [0018] Example 2
[0019] 本实施例提供的电工钢表面用绝缘涂层， 包括以下按照重量份数的的原料组分 ： 环氧树脂 60份； 醇溶性树脂 23份， 三聚氰胺甲醛树脂 12份； 磷酸二氢铝 40份 ； 催干剂 14份； 固体催化剂 13份； 绝缘助剂 13份； 乙醇 40份， 去离子水 35份。 [0019] The insulating coating for the surface of the electrical steel provided by the embodiment includes the following raw material components by weight: 60 parts of epoxy resin; 23 parts of alcohol-soluble resin, 12 parts of melamine formaldehyde resin; aluminum dihydrogen phosphate 40 copies 14 parts of drier; 13 parts of solid catalyst; 13 parts of insulating aid; 40 parts of ethanol, 35 parts of deionized water.
[0020] 本实施例的环氧树脂选自环氧树脂乳液。 [0020] The epoxy resin of this embodiment is selected from the group consisting of epoxy resin emulsions.
[0021] 催干剂选自氨基脲盐酸盐。 [0021] The drier is selected from the group consisting of semicarbazide hydrochloride.
[0022] 固体催化剂选自硅藻土。 [0022] The solid catalyst is selected from the group consisting of diatomaceous earth.
[0023] 本实施例的绝缘助剂选自乙烯基三乙氧基硅烷。  [0023] The insulating auxiliary of the present embodiment is selected from the group consisting of vinyl triethoxysilane.
[0024] 实施例 3 [0024] Example 3
[0025] 本实施例提供的电工钢表面用绝缘涂层， 包括以下按照重量份数的的原料组分 ： 环氧树脂 52份； 醇溶性树脂 19份， 三聚氰胺甲醛树脂 10份； 磷酸二氢铝 38份 ； 催干剂 10份； 固体催化剂 10份； 绝缘助剂 11份； 乙醇 33份， 去离子水 30份。  [0025] The insulating coating for the surface of the electrical steel provided by the embodiment includes the following raw material components in parts by weight: 52 parts of epoxy resin; 19 parts of alcohol-soluble resin, 10 parts of melamine formaldehyde resin; aluminum dihydrogen phosphate 38 parts; 10 parts of drier; 10 parts of solid catalyst; 11 parts of insulating agent; 33 parts of ethanol, 30 parts of deionized water.
[0026] 本实施例的环氧树脂选自水溶性环氧树脂。  The epoxy resin of this embodiment is selected from water-soluble epoxy resins.
[0027] 催干剂选自阿卡盐酸盐。  [0027] The drier is selected from the group consisting of Aka Hydrochloride.
[0028] 固体催化剂选自高岭土。  [0028] The solid catalyst is selected from the group consisting of kaolin.
[0029] 本实施例的绝缘助剂选自 2-氨基 -4-氯苯并噻唑。  [0029] The insulating auxiliary of this embodiment is selected from the group consisting of 2-amino-4-chlorobenzothiazole.
[0030] 实施例 4测试样品的绝缘性能。 [0030] Example 4 Test samples for insulation properties.
[0031] 附着性测试： GB 2522-88。 [0031] Adhesion test: GB 2522-88.
[0032] 焊接性测试条件： 惰性气体钨机保护焊 (TIG)， 电流值 120A， 电极材料 Th-W， 氩气流量 6L/min， 压力 50kg/cm2。  [0032] Weldability test conditions: inert gas tungsten machine protection welding (TIG), current value 120A, electrode material Th-W, argon flow rate 6L/min, pressure 50kg/cm2.
[0033] 耐蚀性测试： JIS Z2371。 [0033] Corrosion resistance test: JIS Z2371.
[0034] 层间电阻测试： JIS C2550。 [0034] Interlayer resistance test: JIS C2550.
[0035] [0035]
[] [表 1] 测试项目 实施例 1 实施例 2 实施例 3 附着性 无脱落 无脱落 无脱落  [] [Table 1] Test items Example 1 Example 2 Example 3 Adhesion No shedding No shedding No shedding
耐腐蚀性％ 15.36 14.29 17.21  Corrosion resistance% 15.36 14.29 17.21
层间电阻 Ω·ηηη 2 201 213 208 Interlayer resistance Ω·ηηη 2 201 213 208
外观 表面光亮 表面光亮 表面光亮 火旱接性 cm/min 小于 50 小于 50 小于 50 当然， 上述说明并非是对本发明的限制， 本发明也并不限于上述举例， 本技术 领域的普通技术人员， 在本发明的实质范围内， 作出的变化、 改型、 添加或替 换， 都应属于本发明的保护范围。 Appearance surface bright surface bright surface bright fire dryness cm/min less than 50 less than 50 less than 50 The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should make changes, modifications, additions or substitutions within the scope of the present invention. The scope of protection of the present invention.

Claims

权利要求书 Claim
[权利要求 1] 一种电工钢表面用绝缘涂层， 包括以下按照重量份数的的原料组分： 环氧树脂 40-60份； 醇溶性树脂 15-23份， 三聚氰胺甲醛树脂 5-12份； 磷酸二氢铝 30-40份； 催干剂 5-14份； 固体催化剂 5-13份； 绝缘助剂 10 -13份； 乙醇 30-40份， 去离子水 25-35份。  [Claim 1] An insulating coating for electrical steel surface, comprising the following raw material components in parts by weight: 40-60 parts of epoxy resin; 15-23 parts of alcohol-soluble resin, 5-12 parts of melamine formaldehyde resin 30-40 parts of aluminum dihydrogen phosphate; 5-14 parts of drier; 5-13 parts of solid catalyst; 10-13 parts of insulating agent; 30-40 parts of ethanol, 25-35 parts of deionized water.
[权利要求 2] 根据权利要求 1所述的绝缘涂层， 其特征在于： 环氧树脂是水溶性环 氧树脂或环氧树脂乳液。  [Claim 2] The insulating coating according to claim 1, wherein the epoxy resin is a water-soluble epoxy resin or an epoxy resin emulsion.
[权利要求 3] 根据权利要求 1所述的绝缘涂层， 其特征在于： 催干剂选自组胺二盐 酸盐， 氨基脲盐酸盐、 乙脒盐酸盐、 哌嗪二盐酸盐、 阿卡盐酸盐中的 一种。  [Claim 3] The insulating coating according to claim 1, wherein the drier is selected from the group consisting of histamine dihydrochloride, semicarbazide hydrochloride, acetamidine hydrochloride, piperazine dihydrochloride One of Aka hydrochloride.
[权利要求 4] 根据权利要求 1所述的绝缘涂层， 其特征在于： 固体催化剂是胶体二 氧化硅、 硅藻土、 高岭土中的一种。  [Claim 4] The insulating coating according to claim 1, wherein the solid catalyst is one of colloidal silica, diatomaceous earth, and kaolin.
[权利要求 5] 根据权利要求 1所述的绝缘涂层， 其特征在于： 绝缘助剂是间甲基苯 甲酸、 乙烯基三乙氧基硅烷、 2-氨基 -4-氯苯并噻唑中的一种。 [Claim 5] The insulating coating according to claim 1, wherein the insulating auxiliary agent is m-methylbenzoic acid, vinyltriethoxysilane, 2-amino-4-chlorobenzothiazole One.
PCT/CN2016/113367 2016-12-30 2016-12-30 Insulating coating for electrical steel surfaces WO2018119979A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496399A (en) * 1984-05-21 1985-01-29 Armco Inc. Method and aqueous coating compositions for forming anti-stick and insulative coatings on semi-processed and fully-processed electrical steels
CN101029196A (en) * 2006-02-28 2007-09-05 宝山钢铁股份有限公司 Electrical steel thermal-insulating coating with excellent adhesion
CN101429409A (en) * 2008-12-18 2009-05-13 复旦大学 Environment-friendly electric steel nano-coating material, preparation and uses thereof
CN101486866A (en) * 2009-02-20 2009-07-22 南京大学 High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution
CN101792635A (en) * 2010-02-10 2010-08-04 武汉科技大学 Strong-pressure resisting water-based insulting paint for electric steel and preparation method thereof
CN102732132A (en) * 2012-06-20 2012-10-17 武汉工程大学 Environment-friendly insulation paint used on non-oriented electrical steel, and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496399A (en) * 1984-05-21 1985-01-29 Armco Inc. Method and aqueous coating compositions for forming anti-stick and insulative coatings on semi-processed and fully-processed electrical steels
CN101029196A (en) * 2006-02-28 2007-09-05 宝山钢铁股份有限公司 Electrical steel thermal-insulating coating with excellent adhesion
CN101429409A (en) * 2008-12-18 2009-05-13 复旦大学 Environment-friendly electric steel nano-coating material, preparation and uses thereof
CN101486866A (en) * 2009-02-20 2009-07-22 南京大学 High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution
CN101792635A (en) * 2010-02-10 2010-08-04 武汉科技大学 Strong-pressure resisting water-based insulting paint for electric steel and preparation method thereof
CN102732132A (en) * 2012-06-20 2012-10-17 武汉工程大学 Environment-friendly insulation paint used on non-oriented electrical steel, and preparation method thereof

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