차체 구조용 에폭시 접착제의 접합부 특성에 미치는 Zirconate 첨가 효과 (The Effect of Zirconate Addition on the Joint Properties of Epoxy Adhesive for Car Body Assembly)

서지정보

· 발행기관 : 대한용접접합학회
· 수록지 정보 : 대한용접접합학회지 / 31권 / 5호 / 71 ~ 76페이지
· 저자명 : 정은택, 이혜림, 이소정, 임창용, 서종덕, 김목순, 김준기

초록

The effect of zirconate having - NH functional group on the T-peel and lap shear strength of CaCO3
containing structural epoxy adhesive for car body assembly was investigated. Curing behavior of epoxy
adhesive samples were investigated by differential scanning calorimeter (DSC) techniques. The addition of
zirconate up to 7.5 phr did not affect the curing mechanism of epoxy adhesive. While the small amount
of zirconate addition less than 1.1 phr increased the cross-linking density, the excess addition of zirconate
resulted in the increase of uncross-linked impurity. From the increase of T-peel and lap shear strength and
the change of fracture mode from the adhesive failure to the mixed one, it was considered that the small
addition of zirconate was effective in improving the adhesion strength of epoxy adhesive to the adherend
and inorganic filler surfaces. The formation of uncross-linked impurity with the excess addition of zirconate
was considered to decrease the joint strength by decreasing the cohesive strength of the cured epoxy.

영어초록

The effect of zirconate having - NH functional group on the T-peel and lap shear strength of CaCO3
containing structural epoxy adhesive for car body assembly was investigated. Curing behavior of epoxy
adhesive samples were investigated by differential scanning calorimeter (DSC) techniques. The addition of
zirconate up to 7.5 phr did not affect the curing mechanism of epoxy adhesive. While the small amount
of zirconate addition less than 1.1 phr increased the cross-linking density, the excess addition of zirconate
resulted in the increase of uncross-linked impurity. From the increase of T-peel and lap shear strength and
the change of fracture mode from the adhesive failure to the mixed one, it was considered that the small
addition of zirconate was effective in improving the adhesion strength of epoxy adhesive to the adherend
and inorganic filler surfaces. The formation of uncross-linked impurity with the excess addition of zirconate
was considered to decrease the joint strength by decreasing the cohesive strength of the cured epoxy.

참고자료

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