Impact of in‐line atmospheric plasma fluorination of carbon fibers on the performance of unidirectional, carbon fiber‐reinforced polyvinylidene fluoride

Abstract

Unidirectional, carbon fiber-reinforced polyvinylidene fluoride (PVDF) composites were manufactured using a powder impregnation process with integrated in-line continuous atmospheric plasma fluorination of carbon IMPACT OF IN-LINE APF OF CARBON FIBERS ON UNIDIRECTIONAL, CF-REINFORCED PVDFfibers to produce unidirectional carbon fiber/PVDF tapes with a fiber volume fraction of 60 ± 2%. Carbon fiber/PVDF tapes were processed into composite laminate test specimens by compression moulding and interface-dominated composite properties were studied. Short-beam shear test results showed an improvement of up to 70% for the composite laminates containing atmospheric plasma-fluorinated T700 carbon fibers with a fluorine content of 3.7 at. %, as determined by X-ray photoelectron spectroscopy. The flexural strength and modulus of the laminated carbon fiber/PVDF composites containing APF-treated T700 carbon fibers also increased by 45% and 38%, respectively. C

Increased interfacial adhesion between carbon fiber and poly(vinylidene fluoride) by an aqueous sizing agent

“…So far, to explore the weak interfacial adhesion for the CF/PVDF composites, it is mainly concentrated on the fiber surface treatment by various plasma treatment technique, the modification of matrix, and the synergy of fiber and matrix modification . In essence, herein the fiber surface treatment aimed to introduce fluorine and reactive functionalities onto the surface of continuous CFs.…”