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김승수,이재훈,류 훈,임가현,임준섭,이치완,이춘규 한국고분자학회 2022 폴리머 Vol.46 No.5
Herein we prepared an adhesive for laminated electrical steels that has excellent adhesion and oil resistancefor dot-bonded motor core for electric vehicles. Its outstanding adhesion and oil resistance originate from isosorbide corestructure having good hydrophilicity and a rigid chemical structure. The adhesion property was evaluated by measuringthe lap shear strength of the laminated electrical steel and peel strength of the dot-bonded motor core and compared itto an adhesive to which petroleum-based alicyclic polyol was applied. Isosorbide derivative was incorporated in acrylatemodified polyurethane as a polyol for compatibility with other adhesive components and to enact a fast-curing process.