Preparation and Properties of Carbon Fiber/Carbon Nanotube Wet-Laid Composites

Abstract

In this study, carbon nanotubes (CNTs) were introduced into carbon fiber (CF) wet-laid composites as functional nano-fillers to fabricate multi-functional composites with improved mechanical, electrical, and thermal properties. It was considered that the wet-laid process was most suitable in order to introduce filler into brittle and rigid carbon fiber substrates, and we established the conditions of the process that could impart dispersibility and bonding between the fibers. We introduced polyamide 6 (PA6) short fiber, which is the same polymeric material as the stacking film, into carbon fiber and CNT mixture to enhance the binding interactions between carbon fiber and CNTs. Various types of CNT-reinforced carbon fiber wet-laid composites with PA6 short fibers were prepared, and the morphology, mechanical and electrical properties of the composites were estimated. As CNT was added to the carbon fiber nonwoven, the electrical conductivity increased by 500% but the tensile strength decreased slightly. By introducing short fibers of the same material as the matrix between CNT–CF wet-laid nonwovens, it was possible to find optimum conditions to increase the electrical conductivity while maintaining mechanical properties.

Analysis of mechanical, thermal, electrical andEMIshielding properties of graphite/carbon fiber reinforced polypropylene composites prepared via a twin screw extruder

“…Images of SEM (Figure 2(b),(c)), showing a good filler‐matrix adhesion. This interfacial adhesion plays an important role in improving the mechanical behavior 36 of GCF composites. Figure 2(d), showing the broken surfaces with voids and cracks of the composite structure, due to the inadequate percolation of the polymeric framework into the reinforcement 37 …”

Synthesis, Characterization, and Analysis of Hybrid Carbon Nanotubes by Chemical Vapor Deposition: Application for Aluminum Removal

“…Of those techniques, adsorption is considered to be the superior technique because of its flexibility in design, operation, cost-effectiveness, and enabling large-scale applications. Thus, various types of component of adsorbents have been utilized for removal of toxic metals, such as sawdust [ 10 ], rice husks [ 11 ], maize cobs [ 12 ], granulated blast-furnace slag [ 13 ], kaolinitic and giru clay [ 14 ], aquatic plant [ 15 ], powder-activated carbon (PAC) [ 16 ], and nanomaterials [ 17 ].…”

Coupled Flexural-Electrical Evaluation of Additively Manufactured Multifunctional Composites at Ambient Temperature

“…While the test results depicted the excellent electrical properties due to the addition of fillers with a limitation in mechanical properties improvement, this study did not address the multifunctional coupled flexural-eletrical properties of the 3D printed continuous carbon fiber composites [10]. Multi-functional composites were manufactured, which involved introducing carbon nanotubes (CNTs) into carbon fiber wet-laid composites as functional nano-fillers for improved electrical, thermal, and mechanical performance [11]. Polyamide 6 (PA6) short fiber was introduced into carbon fiber and CNT mixture to improve bonding between CNTs and the carbon fiber [11].…”