Preparation and Mechanical Characterization of Tack-free Surfaced CSR/Epoxy Adhesive Films

Abstract

High performance epoxy systems have been widely used in electronic devices, aerospace structures, and automotive parts. In this study, introduction of both core-shell rubber (CSR) and thermoplastics into epoxy systems was considered to improve mechanical properties as well as to make tack-free surfaced epoxy films. CSR particles were very uniformly dispersed into epoxy by means of ultrasonic dismembrator and homogenizer at the presence of polymeric dispersion agent. Well-dispersed CSR containing epoxy systems exhibited higher peel strengths at room temperature. Furthermore, peel strength as well as impact peel strength at low temperature could be comprehensively improved.

Keywords:

• tack-free surface
• core-shell rubber particles
• epoxy
• impact peel strength
• toughened epoxy

Acknowledgment

This work was supported by the Technology Innovation Program (11035163) funded by the Ministry of Knowledge Economy (MKE, Korea) and the Brain Korea 21 project.