TY - GEN
T1 - Femtosecond Laser Surface Treatment of Aerospace High Modulus CFRP Composites and Its Effect on Surface Wettability
AU - Meng, Qinggeng
AU - Zhang, Xueqiang
AU - Zhang, Kaihu
N1 - Publisher Copyright:
© 2023 SPIE.
PY - 2023
Y1 - 2023
N2 - Carbon fiber reinforced polymer (CFRP) is widely used in aerospace, transportation and other fields due to its excellent material properties. In order to improve the adhesive bond strength of CFRP composites, surface treatment is particularly important. In this study, femtosecond laser was used to treat the surface of aerospace high modulus CFRP composites, and the changes of resin removal and micro/nano structure of carbon fiber with laser fluence were investigated. It was found that the improvement of wettability was more favorable under the condition of removing the ablated resin and forming the complete micro/nano structure on the surface of carbon fiber. Through optimization, changing the laser fluence used in surface treatment, the water contact angle of the treated surface was reduced from 111.9° to 7.5°, greatly increasing the hydrophilicity of the surface, significantly enhancing the ductility of the surface liquid, which is expected to promote the flow and penetration of the adhesive on the surface, and further enhance the bond strength.
AB - Carbon fiber reinforced polymer (CFRP) is widely used in aerospace, transportation and other fields due to its excellent material properties. In order to improve the adhesive bond strength of CFRP composites, surface treatment is particularly important. In this study, femtosecond laser was used to treat the surface of aerospace high modulus CFRP composites, and the changes of resin removal and micro/nano structure of carbon fiber with laser fluence were investigated. It was found that the improvement of wettability was more favorable under the condition of removing the ablated resin and forming the complete micro/nano structure on the surface of carbon fiber. Through optimization, changing the laser fluence used in surface treatment, the water contact angle of the treated surface was reduced from 111.9° to 7.5°, greatly increasing the hydrophilicity of the surface, significantly enhancing the ductility of the surface liquid, which is expected to promote the flow and penetration of the adhesive on the surface, and further enhance the bond strength.
KW - aerospace high modulus CFRP
KW - femtosecond laser
KW - micro/nano structure
KW - resin removal
KW - surface wettability
UR - http://www.scopus.com/inward/record.url?scp=85171484228&partnerID=8YFLogxK
U2 - 10.1117/12.2690370
DO - 10.1117/12.2690370
M3 - Conference contribution
AN - SCOPUS:85171484228
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 3rd International Conference on Laser, Optics, and Optoelectronic Technology, LOPET 2023
A2 - Li, Xiaotian
A2 - Costa, Manuel Filipe
PB - SPIE
T2 - 3rd International Conference on Laser, Optics, and Optoelectronic Technology, LOPET 2023
Y2 - 26 May 2023 through 28 May 2023
ER -