WO2018119986A1 - 一种硅钢用绝缘涂料 - Google Patents

一种硅钢用绝缘涂料 Download PDF

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WO2018119986A1
WO2018119986A1 PCT/CN2016/113381 CN2016113381W WO2018119986A1 WO 2018119986 A1 WO2018119986 A1 WO 2018119986A1 CN 2016113381 W CN2016113381 W CN 2016113381W WO 2018119986 A1 WO2018119986 A1 WO 2018119986A1
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parts
silicon steel
insulating coating
epoxy resin
hydrochloride
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PCT/CN2016/113381
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English (en)
French (fr)
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黄响华
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黄响华
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Publication of WO2018119986A1 publication Critical patent/WO2018119986A1/zh

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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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins

Definitions

  • the present invention relates to an insulating coating for silicon steel.
  • Non-oriented silicon steel is generally required to be stamped into a core-shaped blank after subsequent processing, and is fixed by riveting or welding after lamination.
  • 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.
  • the technical problem to be solved by the present invention is to provide an insulating coating for silicon steel.
  • the insulating coating for silicon steel provided by the present invention comprises the following raw material components in parts by weight: epoxy resin 35-55 parts; diethyl maleate 15-20 parts; aluminum dihydrogen phosphate 40-50 Parts; 5-10 parts of drier; 2-6 parts of solid catalyst; 5-8 parts of insulating aid; 10-16 parts of ethanol; 40-45 parts of deionized water.
  • the epoxy resin of the present invention is a water-soluble epoxy resin or epoxy resin emulsion.
  • the drier selected for use in the present invention is selected from the group consisting of semicarbazide hydrochloride, acetamidine hydrochloride, phenylhydrazine hydrochloride, piperazine dihydrochloride, tetracycline hydrochloride, and aca hydrochloride.
  • semicarbazide hydrochloride acetamidine hydrochloride, phenylhydrazine hydrochloride, piperazine dihydrochloride, tetracycline hydrochloride, and aca hydrochloride.
  • the solid catalyst of the present invention is one of colloidal silica, diatomaceous earth, and kaolin.
  • the insulating auxiliary of the present invention is octadecyl methacrylate, m-methylbenzoic acid, vinyl triethoxysilane
  • Preparation and application of the present invention After mixing the above components at normal temperature, the mixture is stirred at a low speed by a stirring device to form a homogeneous phase solution, and coated by a roll coater at a thickness of 0.5 mm.
  • the surface of the silicon steel sheet was kept at a coating amount of 1.8 to 2 g/m2, and baked in an open flame baking oven at a sheet temperature of 100 to 400 ° C.
  • the insulating coating paint of the present invention has a highly transparent appearance after being coated with non-oriented silicon steel, and has excellent insulation, corrosion resistance, adhesion, weldability, manufacturability, and eliminates chrome-free coating.
  • the layer is sticky and not wear-resistant, which can achieve the environmental performance of non-oriented silicon steel coating.
  • the insulating coating for silicon steel provided in this embodiment includes the following raw material components by weight: 35 parts of epoxy resin; 15 parts of diethyl maleate; 40 parts of aluminum dihydrogen phosphate; drier 5 parts; 2 parts of solid catalyst; 5 parts of insulating aid; 10 parts of ethanol; 40 parts of deionized water.
  • the epoxy resin of this embodiment is a water-soluble epoxy resin.
  • the drier selected for use in this embodiment is selected from the group consisting of semicarbazide hydrochloride.
  • the solid catalyst of this example is colloidal silica.
  • the insulating auxiliary of this embodiment is octadecyl methacrylate.
  • Preparation and application of the present embodiment 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, and coated on a surface of a silicon steel plate having a thickness of 0.5 mm by a roll coater, and kept coated.
  • the amount of application was 1.8 g/m2, and it was baked in an open flame baking oven at a plate temperature of 100 ° C to form a film.
  • the insulating coating for silicon steel provided in this embodiment includes the following raw material components in parts by weight: epoxy resin 55 parts; diethyl maleate 20 parts; aluminum dihydrogen phosphate 50 parts; drier 10 parts; 6 parts of solid catalyst; 8 parts of insulating aid; 16 parts of ethanol; 45 parts of deionized water.
  • the epoxy resin of this embodiment is an epoxy resin emulsion.
  • the drier selected for use in this embodiment is selected from the group consisting of acetamidine hydrochloride.
  • the solid catalyst of this example is diatomaceous earth.
  • the insulating auxiliary of this embodiment is vinyl triethoxysilane.
  • Preparation and application of the present embodiment 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, which is applied to the surface of a silicon steel plate having a thickness of 0.5 mm by a roll coater, and is kept coated.
  • the amount of application was 2 g/m2, and it was baked in an open flame baking oven at a plate temperature of 300 ° C to form a film.
  • the insulating coating for silicon steel provided in this embodiment includes the following raw material components by weight: 35-55 parts of epoxy resin; 17 parts of diethyl maleate; 44 parts of aluminum dihydrogen phosphate; 8 parts of dry agent; 3 parts of solid catalyst; 7 parts of insulating aid; 15 parts of ethanol; 42 parts of deionized water.
  • the epoxy resin of this embodiment is a water-soluble epoxy resin.
  • the drier selected for use in this embodiment is selected from the group consisting of Aka Hydrochloride.
  • the solid catalyst of this example is kaolin.
  • the insulating auxiliary of this embodiment is m-methylbenzoic acid.
  • Preparation and application of the present embodiment 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, which is applied to the surface of a silicon steel plate having a thickness of 0.5 mm by a roll coater, and is kept coated.
  • the amount of application was 2 g/m2, and it was baked in an open flame baking oven at a plate temperature of 400 ° C to form a film.
  • 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. Interlayer resistance test: JIS C2550.

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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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)

Abstract

一种硅钢用绝缘涂料，包括以下按照重量份数的的原料组分：环氧树脂35-55份；马来酸二乙酯15-20份；磷酸二氢铝40-50份；催干剂5-10份；固体催化剂2-6份；绝缘助剂5-8份；乙醇10-16份；去离子水40-45份。涂料施加于无取向硅钢后形成的涂层，外观高度透明，具有优异的绝缘性、耐腐蚀性、附着性、焊接性、可制造性，消除了无铬涂层发粘、不耐磨的缺陷，可以实现无取向硅钢涂层的环保性能。

Description

一种硅钢用绝缘涂料
技术领域
[0001] 本发明涉及一种硅钢用绝缘涂料。
背景技术
[0002] 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。
技术问题
[0003] 本发明所要解决的技术问题是： 提供一种硅钢用绝缘涂料。
问题的解决方案
技术解决方案
[0004] 为解决上述技术问题， 本发明采用的技术方案是：
[0005] 本发明提供的硅钢用绝缘涂料， 包括以下按照重量份数的的原料组分： 环氧树 脂 35-55份； 马来酸二乙酯 15-20份； 磷酸二氢铝 40-50份； 催干剂 5-10份； 固体催 化剂 2-6份； 绝缘助剂 5-8份； 乙醇 10-16份； 去离子水 40-45份。
[0006] 本发明的环氧树脂是水溶性环氧树脂或环氧树脂乳液。
[0007] 本发明选用的催干剂选自氨基脲盐酸盐、 乙脒盐酸盐、 苯肼盐酸盐、 哌嗪二盐 酸盐、 四环素盐酸盐、 阿卡盐酸盐中的一种。
[0008] 本发明的固体催化剂是胶体二氧化硅、 硅藻土、 高岭土中的一种。 [0009] 本发明的绝缘助剂是甲基丙烯酸十八酯、 间甲基苯甲酸、 乙烯基三乙氧基硅烷
、 2-氨基 -4-氯苯并噻唑、 四甲基锡中的一种。
[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， 采用辊涂机涂敷于厚 0.5mm
的硅钢板的表面， 保持涂敷量为 1.8-2g/m2， 采用明火烘烤炉， 在 100-400°C板温 条件下烘烤成膜。
发明的有益效果
有益效果
[0011] 本发明的绝缘涂层涂料， 经向无取向硅钢涂层后， 其外观高度透明， 具有优异 的绝缘性、 耐腐蚀性、 附着性、 焊接性、 可制造性， 消除了无铬涂层发粘、 不 耐磨的缺陷， 可以实现无取向硅钢涂层的环保性能。
实施该发明的最佳实施例
本发明的最佳实施方式
[0012] 实施例 1
[0013] 本实施例提供的硅钢用绝缘涂料， 包括以下按照重量份数的的原料组分： 环氧 树脂 35份； 马来酸二乙酯 15份； 磷酸二氢铝 40份； 催干剂 5份； 固体催化剂 2份 ； 绝缘助剂 5份； 乙醇 10份； 去离子水 40份。
[0014] 本实施例的环氧树脂是水溶性环氧树脂。
[0015] 本实施例选用的催干剂选自氨基脲盐酸盐。
[0016] 本实施例的固体催化剂是胶体二氧化硅。
[0017] 本实施例的绝缘助剂是甲基丙烯酸十八酯。
[0018] 本实施例制备及应用： 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， 采用辊涂机涂敷于厚 0.5mm的硅钢板的表面， 保持涂敷量 为 1.8g/m2， 采用明火烘烤炉， 在 100°C板温条件下烘烤成膜。
[0019] 实施例 2
[0020] 本实施例提供的硅钢用绝缘涂料， 包括以下按照重量份数的的原料组分： 环氧 树脂 55份； 马来酸二乙酯 20份； 磷酸二氢铝 50份； 催干剂 10份； 固体催化剂 6份 ； 绝缘助剂 8份； 乙醇 16份； 去离子水 45份。 [0021] 本实施例的环氧树脂是环氧树脂乳液。
[0022] 本实施例选用的催干剂选自乙脒盐酸盐。
[0023] 本实施例的固体催化剂是硅藻土。
[0024] 本实施例的绝缘助剂是乙烯基三乙氧基硅烷。
[0025] 本实施例制备及应用： 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， 采用辊涂机涂敷于厚 0.5mm的硅钢板的表面， 保持涂敷量 为 2g/m2， 采用明火烘烤炉， 在 300°C板温条件下烘烤成膜。
[0026] 实施例 3
[0027] 本实施例提供的硅钢用绝缘涂料， 包括以下按照重量份数的的原料组分： 环氧 树脂 35-55份； 马来酸二乙酯 17份； 磷酸二氢铝 44份； 催干剂 8份； 固体催化剂 3 份； 绝缘助剂 7份； 乙醇 15份； 去离子水 42份。
[0028] 本实施例的环氧树脂是水溶性环氧树脂。
[0029] 本实施例选用的催干剂选自阿卡盐酸盐。
[0030] 本实施例的固体催化剂是高岭土。
[0031] 本实施例的绝缘助剂是间甲基苯甲酸。
[0032] 本实施例制备及应用： 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， 采用辊涂机涂敷于厚 0.5mm的硅钢板的表面， 保持涂敷量 为 2g/m2， 采用明火烘烤炉， 在 400°C板温条件下烘烤成膜。
[0033] 实施例 4测试样品的绝缘性能。 附着性测试： GB 2522-88。 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。 耐蚀性测试： JIS Z2371。 层间电阻测试： JIS C2550。
[0034]
[] [表 1]
Figure imgf000005_0001
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。

Claims

权利要求书
[权利要求 1] 一种硅钢用绝缘涂料， 包括以下按照重量份数的的原料组分： 环氧树 脂 35-55份； 马来酸二乙酯 15-20份； 磷酸二氢铝 40-50份； 催干剂 5-10 份； 固体催化剂 2-6份； 绝缘助剂 5-8份； 乙醇 10-16份； 去离子水 40-4
5份。
[权利要求 2] 根据权利要求 1所述的硅钢用绝缘涂料， 其特征在于： 环氧树脂是水 溶性环氧树脂或环氧树脂乳液。
[权利要求 3] 根据权利要求 1所述的硅钢用绝缘涂料， 其特征在于： 催干剂选自氨 基脲盐酸盐、 乙脒盐酸盐、 苯肼盐酸盐、 哌嗪二盐酸盐、 四环素盐酸 盐、 阿卡盐酸盐中的一种。
[权利要求 4] 根据权利要求 1所述的硅钢用绝缘涂料， 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。
[权利要求 5] 根据权利要求 1所述的硅钢用绝缘涂料， 其特征在于： 绝缘助剂是甲 基丙烯酸十八酯、 间甲基苯甲酸、 乙烯基三乙氧基硅烷、 2-氨基 -4-氯 苯并噻唑、 四甲基锡中的一种。
PCT/CN2016/113381 2016-12-30 2016-12-30 一种硅钢用绝缘涂料 WO2018119986A1 (zh)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113416442A (zh) * 2020-12-16 2021-09-21 安徽佳景美新材料有限公司 一种可释放负离子环氧树脂地坪材料

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CN1690143A (zh) * 2004-04-28 2005-11-02 宝山钢铁股份有限公司 电工钢用水性自粘接涂料
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CN103013195A (zh) * 2012-12-18 2013-04-03 南京航空航天大学 一种无取向硅钢用半无机环保绝缘涂料及其涂层制备方法

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US4618377A (en) * 1985-02-09 1986-10-21 Nippon Steel Corporation Method for surface treatment of electrical steel sheet
CN1690143A (zh) * 2004-04-28 2005-11-02 宝山钢铁股份有限公司 电工钢用水性自粘接涂料
WO2006076724A2 (en) * 2005-01-13 2006-07-20 E.I. Dupont De Nemours And Company Durable coating compositions containing aspartic amine compounds with improved potlife
CN1821323A (zh) * 2006-03-14 2006-08-23 无锡市奥尔化工有限公司 水分散性无铬单组分硅钢绝缘涂料及其制备方法
CN101928490A (zh) * 2009-06-24 2010-12-29 宝山钢铁股份有限公司 一种无铬绝缘涂料及其应用
CN101659799A (zh) * 2009-09-11 2010-03-03 艾宝魁 一种电工钢绝缘涂料,其制备方法及涂覆方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113416442A (zh) * 2020-12-16 2021-09-21 安徽佳景美新材料有限公司 一种可释放负离子环氧树脂地坪材料

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