Chemical modification of carbon fiber with diethylenetriaminepentaacetic acid/halloysite nanotube as a multifunctional interfacial reinforcement for silicone resin composites

Abstract

In the present research, a multifunctional hierarchical reinforcement was prepared by chemical modification of carbon fibers (CFs) with halloysite nanotubes (HNTs) by the bridging diethylenetriaminepentaacetic acid (DTPA) for improving interfacial microstructures and properties of composites. Surface structures and groups of modified HNTs and CFs were characterized systematically. The uniform distributions of the introduced DTPA and HNTs helped to increase fiber polarity, surface energy, and wettability. As a consequence, significant enhancements of interfacial properties and hydrothermal aging resistance of composites were achieved, and interfacial reinforcing mechanisms have also been studied. Moreover, the storage modulus showed a 17.95% improvement, and the glass transition temperature was enhanced by 17°C by dynamic mechanical analysis testing.

Catechol‐based co‐deposited carbon fiber surfaces for enhancement of fiber/epoxy composites

“…[1][2][3] However, due to the inert graphite structure on the surface of carbon fiber (CF), the interfacial adhesion between fiber and matrix is weak and most CFRPs exhibit a tendency to fail in the fiber-matrix interface under excessive load as a result of poor interaction. [4][5][6] This phenomenon can greatly affect the overall mechanical properties of laminates, such as compressive properties, flexural performance, interlaminar shear strength (ILSS), and so on. [7][8][9] Good interfacial adhesion can effectively transfer stress from the matrix to the reinforcement, which conduce to dispersion of stress and an increase mechanical strength on the composites.…”

Mussel-Inspired Co-Deposition of Polydopamine/Silica Nanoparticles onto Carbon Fiber for Improved Interfacial Strength and Hydrothermal Aging Resistance of Composites

“…It is widely accepted that fiber-matrix interface plays a key role in connecting CFs with the hot resin and ensuring efficient stress transfer, which is critical factor for overall properties of polymer composites [5][6][7]. Unfortunately, the fiber smooth and inert surface results in non-ideal interfacial combination and wettability effect with matrix resin [8,9]. Hence, continuous endeavor on fiber surface grafting, like oxidation treatments [10], plasma etching [11], chemical grafting [12,13], polymer sizing [14,15] and high energy irradiation [16,17], has been devoted to improve the surface/interfacial structure and chemistry for preparing advanced polymer composites.…”

Combined effect of chemically compound graphene oxide‐calcium pimelate on crystallization behavior, morphology and mechanical properties of isotactic polypropylene

“…Isotactic polypropylene, a semi‐crystalline thermoplastic resin, has wide applications in the fields of construction, packaging, textiles and automotive industries with its advantages of high hardness, good processability, light‐weight and low cost 21,22 . However, the poor impact strength, bad transparency and high molding shrinkage limit its applications 23 . It is well known that crystallization behaviors are critical to the structure and properties of polymers 24 .…”