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发明公开
CN105567019A 一种无铬环保取向硅钢绝缘涂层及其制备方法 无效 - 驳回

一种无铬环保取向硅钢绝缘涂层及其制备方法
摘要：
本发明提供了一种取向硅钢绝缘涂层，该涂层由以质量百分比计的下列组份制得：金属磷酸二氢镁，5～35％；磷酸镍，2～15％；四硼酸钠，0.5～2％；胶体SiO2，3～10％；纳米TiO2，3～15％；有机树脂，15～35％；有机酸，5～40％；其余为去离子水。本发明提供的绝缘涂层表面致密光亮，不含有毒铬元素，可明显改善涂料的耐吸湿性、耐蚀和耐烧结性，同时具有良好的电绝缘性、附着性和冲片性以及较高的叠片系数。本发明制备方法简单，对设备要求低，易于实现工业化。
摘要（英）：

The present invention provides an oriented silicon steel insulation coating, and the insulation coating is prepared from the following ingredients by mass: 5 to 35% of metal magnesium dihydrogen phosphate; 2 to 15% of nickel phosphate; 0.5 to 2% of sodium tetraborate; 3 to 10% of colloidal SiO2; 3 to 15% of nano TiO2; 15 to 35% of organic resin; 5 to 40% of an organic acid and balance of deionized water. The insulation coating is compact and bright in surface and free of toxic chromium, can significantly improve the coating moisture resistance, corrosion resistance and sintering resistance, also has good electrical insulation, adhesion and blanking property and higher lamination factor, and is simple in preparation method and low in requirement on equipment, and industrialization is easy to realize.

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