TY - JOUR
T1 - The impact of carbon nanofibres on the interfacial properties of CFRPs produced with sized carbon fibres
AU - Zhang, Zhenxue
AU - Li, Xiaoying
AU - Jestin, Simon
AU - Termine, Stefania
AU - Trompeta, Aikaterini-Flora
AU - Araújo , Andreia
AU - Santos, Raquel M.
AU - Charitidis, Costas A.
AU - Dong, Hanshan
PY - 2021/10/9
Y1 - 2021/10/9
N2 - In this work, different amounts of CNFs were added into a complex formulation to coat the CFs surfaces via sizing in order to enhance the bonding between the fibre and the resin in the CF-reinforced polymer composites. The sized CFs bundles were characterised by SEM and Raman. The nanomechanical properties of the composite materials produced were assessed by the nanoindentation test. The interfacial properties of the fibre and resin were evaluated by a push-out method developed on nanoindentation. The average interfacial shear strength of the fibre/matrix interface could be calculated by the critical load, sheet thickness and fibre diameter. The contact angle measurements and resin spreadability were performed prior to nanoindentation to investigate the wetting properties of the fibre. After the push-out tests, the characterisation via optical microscopy/SEM was carried out to ratify the results. It was found the CFs sizing with CNFs (1 to 10 wt%) could generally increase the interfacial shear strength but it was more cost-effective with a small amount of evenly distributed CNFs on CFs.
AB - In this work, different amounts of CNFs were added into a complex formulation to coat the CFs surfaces via sizing in order to enhance the bonding between the fibre and the resin in the CF-reinforced polymer composites. The sized CFs bundles were characterised by SEM and Raman. The nanomechanical properties of the composite materials produced were assessed by the nanoindentation test. The interfacial properties of the fibre and resin were evaluated by a push-out method developed on nanoindentation. The average interfacial shear strength of the fibre/matrix interface could be calculated by the critical load, sheet thickness and fibre diameter. The contact angle measurements and resin spreadability were performed prior to nanoindentation to investigate the wetting properties of the fibre. After the push-out tests, the characterisation via optical microscopy/SEM was carried out to ratify the results. It was found the CFs sizing with CNFs (1 to 10 wt%) could generally increase the interfacial shear strength but it was more cost-effective with a small amount of evenly distributed CNFs on CFs.
KW - CNF
KW - Contact angle
KW - Nanoindentation
KW - carbon fibre-reinforced composite
KW - push-out
UR - http://www.scopus.com/inward/record.url?scp=85117239603&partnerID=8YFLogxK
U2 - 10.3390/polym13203457
DO - 10.3390/polym13203457
M3 - Article
SN - 2073-4360
VL - 13
JO - Polymers
JF - Polymers
IS - 20
M1 - 3457
ER -