Article
  • Development of Adhesive for Laminated Electrical Steels Having Excellent Adhesion and Oil Resistance and Its Application for Dot-bonded Motor Core for Electric Vehicle

  • Seung-Soo Kim# , Jae Hoon Lee*,# , Hoon Ryu*, Kahyun Lim*, Junseop Im*, Chi-Wan Lee*, and Chun-Kyu Lee**,†

  • BMC Co., Ltd, #12 Seombawi-gil, Wongok-myeon, Anseong-si, Gyeonggi-do 17557, Korea
    *Industrial Biotechnology Research, Samyang Corp., 730, Daedeok-daero, Yuseong-gu, Daejeon 34055, Korea
    **Department of Metalmold Design Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan 31080, Korea

  • 접착성 및 내유성이 뛰어난 코팅 전기강판용 접착제 개발 및 전기차용 도트접착형 구동 모터코어에의 적용

  • 김승수# · 이재훈*,# · 류 훈* · 임가현* · 임준섭* · 이치완* · 이춘규**,†

  • (주)비엠씨, *(주)삼양사 융합소재연구소 산업바이오PG, **공주대학교 금형설계공학과

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

Herein we prepared an adhesive for laminated electrical steels that has excellent adhesion and oil resistance for dot-bonded motor core for electric vehicles. Its outstanding adhesion and oil resistance originate from isosorbide core structure having good hydrophilicity and a rigid chemical structure. The adhesion property was evaluated by measuring the lap shear strength of the laminated electrical steel and peel strength of the dot-bonded motor core and compared it to an adhesive to which petroleum-based alicyclic polyol was applied. Isosorbide derivative was incorporated in acrylate modified polyurethane as a polyol for compatibility with other adhesive components and to enact a fast-curing process.


본 논문에서는 접착력과 내유성이 우수한 도트 본딩 타입 EV 모터코어용 접착제에 대해 소개하였으며, 이러한 우수한 성능은 옥수수 기반 바이오 소재인 이소소르비드로부터 기인함을 확인하였다. 접착력은 모터코어용 코팅 강판을 이용한 lap shear strength 및 본딩 모터코어를 이용한 peel strength로 평가하였으며, 이소소르비드가 물성에 미치는 영향을 파악하고자 석유계 지환족 원료를 대체 적용하여 제조한 접착제와 비교 평가하였다. 이소소르비드는 아크릴 변성 폴리우레탄 내 폴리올로 적용되었으며, 이러한 유도체화를 통해 다른 접착 조성물과의 상용성 확보 및 신속한 라디칼 중합에 참여할 수 있게 하였다.


Keywords: motor core, dot-bonding, adhesive, acrylate modified polyurethane, isosorbide, oil resistance.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(5): 583-590

    Published online Sep 25, 2022

  • 10.7317/pk.2022.46.5.583
  • Received on Apr 14, 2022
  • Revised on Jun 13, 2022
  • Accepted on Jul 15, 2022

Correspondence to

  • Chun-Kyu Lee

  • Department of Metalmold Design Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan 31080, Korea

  • E-mail: ckt1230@kongju.ac.kr