TY - JOUR
T1 - Enhanced adhesion effect of epoxy resin on carbon fiber-reinforced Poly(etheretherketone) via surface initiated photopolymerization of glycidyl methacrylate
AU - Zhang, Yucheng
AU - Hasegawa, Koichi
AU - Kamo, Sota
AU - Takagi, Kiyoka
AU - Takahara, Atsushi
N1 - Funding Information:
This work is based on results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/11/17
Y1 - 2020/11/17
N2 - Adhesives for carbon fiber-reinforced poly (etheretherketone) (CFR-PEEK) have attracted the interest of researchers as an effective means for bonding this newly developed lightweight and high-performance composite structures. In this study, we developed a method to overcome the lack of interaction between adherends and adhesives through the modification of glycidyl methacrylate (GMA) brushes via surface-initiated photopolymerization. To achieve a better formation of PGMA brushes, some parameters of the surface-initiated photopolymerization, for example, light intensities (e.g., 2, 4, and 8 mW/cm2) and exposure durations (e.g., 15, 30, 45, 60, 90, 120 min) of ultraviolet (UV) treatment, were optimized. The joints using the adherends with an optimized PGMA layer exhibited more than a two-fold increase in the ultimate lap shear strength compared to that using the bare CFR-PEEK adherends, when a commercially available epoxy film adhesive, FM 309-1, is utilized. The influence of the UV intensities was further revealed via a double cantilever beam test, and the adherends with the modification under 4 mW/cm2 of UV irradiation for 2 h exhibited the best performance, owing to the higher grafting density of the PGMA brushes.
AB - Adhesives for carbon fiber-reinforced poly (etheretherketone) (CFR-PEEK) have attracted the interest of researchers as an effective means for bonding this newly developed lightweight and high-performance composite structures. In this study, we developed a method to overcome the lack of interaction between adherends and adhesives through the modification of glycidyl methacrylate (GMA) brushes via surface-initiated photopolymerization. To achieve a better formation of PGMA brushes, some parameters of the surface-initiated photopolymerization, for example, light intensities (e.g., 2, 4, and 8 mW/cm2) and exposure durations (e.g., 15, 30, 45, 60, 90, 120 min) of ultraviolet (UV) treatment, were optimized. The joints using the adherends with an optimized PGMA layer exhibited more than a two-fold increase in the ultimate lap shear strength compared to that using the bare CFR-PEEK adherends, when a commercially available epoxy film adhesive, FM 309-1, is utilized. The influence of the UV intensities was further revealed via a double cantilever beam test, and the adherends with the modification under 4 mW/cm2 of UV irradiation for 2 h exhibited the best performance, owing to the higher grafting density of the PGMA brushes.
UR - http://www.scopus.com/inward/record.url?scp=85091230246&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85091230246&partnerID=8YFLogxK
U2 - 10.1016/j.polymer.2020.123036
DO - 10.1016/j.polymer.2020.123036
M3 - Article
AN - SCOPUS:85091230246
VL - 209
JO - Polymer
JF - Polymer
SN - 0032-3861
M1 - 123036
ER -