Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Effect of Curing Agent on the Curing Behavior and Joint Strength of Epoxy Adhesive

에폭시 접착제의 경화거동 및 접합강도에 미치는 경화촉매제의 영향

  • Kim, Min-Su (Advanced Welding & Joining Technology Center/Micro-Joining Center, KITECH) ;
  • Kim, Hae-Yeon (Advanced Welding & Joining Technology Center/Micro-Joining Center, KITECH) ;
  • Yoo, Se-Hoon (Advanced Welding & Joining Technology Center/Micro-Joining Center, KITECH) ;
  • Kim, Jong-Hoon (Advanced Welding & Joining Technology Center/Micro-Joining Center, KITECH) ;
  • Kim, Jun-Ki (Advanced Welding & Joining Technology Center/Micro-Joining Center, KITECH)
  • 김민수 (한국생산기술연구원 용접접합기술센터/마이크로조이닝센터) ;
  • 김해연 (한국생산기술연구원 용접접합기술센터/마이크로조이닝센터) ;
  • 유세훈 (한국생산기술연구원 용접접합기술센터/마이크로조이닝센터) ;
  • 김종훈 (한국생산기술연구원 용접접합기술센터/마이크로조이닝센터) ;
  • 김준기 (한국생산기술연구원 용접접합기술센터/마이크로조이닝센터)
  • Received : 2011.04.01
  • Accepted : 2011.08.18
  • Published : 2011.08.31
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Abstract

Adhesive bonding is one of the most promising joining methods which may substitute for conventional metallurgical joining processes, such as welding, brazing and soldering. Curing behavior and mechanical properties of adhesive joint are largely dependent on the curing agent including hardener and catalyst. In this study, effects of curing system on the curing behavior and single-lap shear strength of epoxy adhesive joint are investigated. Dihydrazide, anhydride and dicyandiamide(DICY) were chosen as hardener and imidazole and triphenylphosphine(TPP) were chosen as catalyst. In curing behavior, TPP showed the delay of the curing rate for DICY and ADH at $160^{\circ}C$, compared to imidazole catalyst due to the high curing onset/peak temperature. DICY seemed to be most beneficial in the joint strength for both steel and Al adherends, although the type of adherends affected the shear strength of epoxy adhesive joint.

Keywords

References

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