| abstract |
The laminated iron core of the present invention is provided with a plurality of electromagnetic steel sheets laminated on each other, and both sides of the electromagnetic steel sheets are covered with an insulating coating; and a bonding part is provided between the electromagnetic steel sheets adjacent to each other in the lamination direction, and the The electromagnetic steel plates are bonded to each other, and the adhesive forming the bonding part includes the first phase and the second phase, the bonding part has the sea-island structure of the first phase of the sea structure part and the second phase of the island structure, and the first phase It contains epoxy resin, acrylic resin and hardener, the SP value of the first phase is 8.5~10.7(cal/cm 3 ) 1/2 , the second phase contains elastomer, and the SP value of the second phase is 7.5~ 8.4(cal/cm 3 ) 1/2 . |