A non-oriented silicon steel insulating coating liquid and its preparation method, and a non-oriented silicon steel sheet.
By using a composite coating solution of acetylation glycol polyether, polyacrylic acid, and acetic acid/acetone mixed solvent on the surface of non-oriented silicon steel, the problems of fogging and mottling defects in the coating of non-oriented silicon steel surface during high-speed coating process were solved, and the uniformity and gloss of the coating were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ENTERY NEW MATERIAL SCI & TECH (WUHAN) CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-02
AI Technical Summary
During the high-speed coating process of non-oriented silicon steel, excessive surface tension of the coating liquid and insufficient leveling time can lead to fogging and mottling defects on the board surface, affecting the quality of the finished product.
A composite insulating coating solution containing acetylenic glycol polyether, polyacrylic acid, and a mixed solvent of acetic acid/acetone is adopted. The acetylenic glycol polyether reduces the dynamic surface tension, the polyacrylic acid stabilizes Mg2+ through a complexation reaction, and the mixed solvent of acetic acid/acetone adjusts the viscosity and promotes rapid leveling. The three work together to solve the problem of uneven coating.
It achieves no fogging defects on the board surface under high-speed coating conditions, with a gloss level of over 110 and uniform and stable coating quality.
Smart Images
Figure CN122127822A_ABST