Effect of sizing on carbon fiber surface properties and fibers/epoxy interfacial adhesion

The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties

“…Tang and Kardos [7] note that for improvement of interfacial adhesion, the sizing must be optimised for the specific fibre and matrix combination used; here, the sizing present on the fibres was optimised for epoxy composites. A recent study by Dai et al [8] showed that even in carbon fibre/ epoxy composites with sizing optimised for epoxy, sizing removal can result in a 10 % increase in IFSS. This has been demonstrated by Maligno et al [9] where finite element studies have shown that sizing can have an adverse effect on the interfacial behaviour, if the stiffness is lower than the fibre/matrix materials.…”

Catecholamine polymers as surface modifiers for enhancing interfacial strength of fiber-reinforced composites

“…Fig. 2(d) shows three species of C 1s peaks corresponding to C@C/CAC (284.8), CAO (286.2), and OAC@O (289.0 eV) components, respectively [44]. On the other hand, a CAN component at binding energy of 285.5 eV only appeared in pDA-CF and pNE-CF (Fig.…”

Effect of surface silanization of carbon fiber on mechanical properties of carbon fiber reinforced polyurethane composites

“…Hence, numerous methods concerning surface modification of CFs [10], such as gaseous oxidation [11], liquid oxidation [12], electrochemical oxidation [13], plasma oxidation [14], surface grafting [15], polymer sizing [16], and multi-scale reinforcements [17,18], have been developed to improve the interfacial adhesion through forming chemical bonding and/or enhancing mechanical interlocking between CFs and matrix [7]. However, the improvement in the interfacial adhesion is usually accompanied by a simultaneous decrease of fiber strength.…”