TY - JOUR
T1 - Repair of delamination-cracks in CFRP using CNT-containing resin pre-coating solution through capillary action
AU - Ji, Yi
AU - Chen, Yi
AU - Yuan, Bingyan
AU - Hu, Xiaozhi
AU - Qiao, Yingjie
PY - 2022/10
Y1 - 2022/10
N2 - Edge-delamination of carbon fiber reinforced plastics (CFRP) has been successfully repaired using a novel technique named resin pre-coating (RPC). The acetone-diluted resin does not only adhere to the surface but penetrates deeply into sub-surfaces through capillary action. In the current study, Carbon Nanotube (CNT) was tentatively added into RPC to further strengthen the bonding. DSC analysis and FTIR results showed no chemical effect on resin curing through adding CNT. Likewise, using CNT as additives has not changed the surface properties of RPC solution with 5 wt% resin and 95 wt% acetone. Compressive testing was performed to validate the effect of CNT incorporation (with four concentrations: 0.5 wt%, 1 wt%, 1.5 wt%, 2 wt%) on RPC repair. The results show that the 5% RPC solution mixing 1.5 wt% of CNT works best with a 22% increase over only RPC in repair effectiveness. SEM revealed CNT bridging at the fracture surface of the RPC/CNT-repaired sample.
AB - Edge-delamination of carbon fiber reinforced plastics (CFRP) has been successfully repaired using a novel technique named resin pre-coating (RPC). The acetone-diluted resin does not only adhere to the surface but penetrates deeply into sub-surfaces through capillary action. In the current study, Carbon Nanotube (CNT) was tentatively added into RPC to further strengthen the bonding. DSC analysis and FTIR results showed no chemical effect on resin curing through adding CNT. Likewise, using CNT as additives has not changed the surface properties of RPC solution with 5 wt% resin and 95 wt% acetone. Compressive testing was performed to validate the effect of CNT incorporation (with four concentrations: 0.5 wt%, 1 wt%, 1.5 wt%, 2 wt%) on RPC repair. The results show that the 5% RPC solution mixing 1.5 wt% of CNT works best with a 22% increase over only RPC in repair effectiveness. SEM revealed CNT bridging at the fracture surface of the RPC/CNT-repaired sample.
KW - Capillary action
KW - CNT bridging
KW - Composite repair
KW - Compressive property
KW - Resin pre-coating
UR - http://www.scopus.com/inward/record.url?scp=85142204311&partnerID=8YFLogxK
U2 - 10.1016/j.jcomc.2022.100330
DO - 10.1016/j.jcomc.2022.100330
M3 - Article
AN - SCOPUS:85142204311
SN - 2666-6820
VL - 9
JO - Composites Part C: Open Access
JF - Composites Part C: Open Access
M1 - 100330
ER -