Reliability analysis of adhesive for PBT-epoxy interface

Kazuo Kato, Takashi Aoki, Yasushi Okamoto, Keiji Tanaka, Atsushi Takahara

研究成果: 会議への寄与タイプ学会誌査読


PBT (polybutylene terephthalate) and epoxy adhesive, which both have superior heat resistance and environmental resistance, are a representative combination now being applied to many parts. Generally, PBT is annealed after molding at a temperature above the glass transition temperature to ensure dimensional stability when in use. But in this case, this process decreases the adhesive strength between PBT and epoxy. This study analyzes the adhesion degradation mechanism in this system and a countermeasure technology is proposed. Regarding this PBT-epoxy adhesion degradation mechanism, focus is placed on changes in the fracture surface, which is analyzed before and after annealing. From this analysis it becomes clear that generation of a WBL (weak boundary layer) is caused by non-crystallization and a migration of the PBT functional group on the adhesion surface layer. According to this mechanism, it is clear that control of the functional group on the surface layer and reforming of a new functional group are very effective ways to maintain adhesive strength after annealing.

出版ステータス出版済み - 12月 1 2007
イベント2007 World Congress - Detroit, MI, 米国
継続期間: 4月 16 20074月 19 2007


その他2007 World Congress
CityDetroit, MI

!!!All Science Journal Classification (ASJC) codes

  • 自動車工学
  • 安全性、リスク、信頼性、品質管理
  • 汚染
  • 産業および生産工学


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