Electric Vehicle Motor Core Adhesive Breakthrough: Exceptional Adhesion and Oil Resistance in Laminated Electrical Steels
발표자
조현정 (삼양사)
연구책임자
조현정 (삼양사)
초록
내용
In this study, we developed an adhesive specifically designed for laminated electrical steels used in dot-bonded motor cores for electric vehicles. This adhesive demonstrates exceptional adhesion performance and oil resistance, attributed to the incorporation of an isosorbide-based core structure, which provides both strong hydrophilicity and a rigid molecular framework. The adhesive’s bonding performance was assessed through lap shear strength measurements on laminated electrical steel, along with peel strength evaluations on dot-bonded motor cores. These properties were compared with those of a reference adhesive formulated using a petroleum-derived alicyclic polyol. The isosorbide derivative was introduced into an acrylate-modified polyurethane matrix as a polyol component, enhancing compatibility with other formulation constituents and facilitating a rapid curing process.