Facile method to enhance the mechanical interfacial strength between carbon fibers and polyamide 6 using modified silane coupling agents

To address the need for a suitable thermoplastic resin-based sizing agent for accommodating the increasing demands of carbon fiber-reinforced plastic, in this work, alcohol-soluble polyamide 6 (PA6) and silane were chemically combined in a certain ratio to improve the mechanical interface properties...

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Veröffentlicht in:Carbon Letters 2022-10, Vol.32 (6), p.1463-1472
Hauptverfasser: Kim, Dong-Kyu, Kang, Seong-Hyun, Han, Woong, Kim, Kwan-Woo, Kim, Byung-Joo
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container_issue 6
container_start_page 1463
container_title Carbon Letters
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creator Kim, Dong-Kyu
Kang, Seong-Hyun
Han, Woong
Kim, Kwan-Woo
Kim, Byung-Joo
description To address the need for a suitable thermoplastic resin-based sizing agent for accommodating the increasing demands of carbon fiber-reinforced plastic, in this work, alcohol-soluble polyamide 6 (PA6) and silane were chemically combined in a certain ratio to improve the mechanical interface properties of the carbon fiber/PA6 composite, and the enhancement in the mechanical interface strength of the final composite according to the treatment time was confirmed. Carbon fiber surface properties were analyzed through ultrahigh-resolution field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy, and Fourier transform infrared spectrometry. The tensile strength of carbon fibers before and after hybrid sizing treatment and the mechanical interfacial shear strength of the final composite were analyzed using tensile and universal testing machines, respectively. After the hybrid sizing treatment, the introduction of the sizing agent to the carbon fiber surface was confirmed through FE-SEM, and a simultaneous increase in the surface roughness was observed. Moreover, the interfacial adhesion was confirmed to increase significantly, as compared to that of the desized carbon fiber. Therefore, this modified sizing agent treatment serves as an effective method for improving the mechanical interfacial adhesion between the carbon fiber and the PA6 matrix.
doi_str_mv 10.1007/s42823-022-00388-w
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subjects Acids
Adhesion
Carbon
Carbon fiber reinforced plastics
Carbon fiber reinforcement
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composite materials
Coupling agents
Emission analysis
Fiber reinforced polymers
Fibers
Field emission microscopy
Fourier transforms
Infrared spectroscopy
Interfacial properties
Interfacial shear strength
Interfacial strength
Materials Engineering
Materials Science
Mechanical properties
Nanotechnology
Original Article
Photoelectron spectroscopy
Photoelectrons
Physical properties
Polyamide resins
Polyamides
Resins
Scanning electron microscopy
Scientific imaging
Shear strength
Silanes
Sizing
Spectrometry
Surface properties
Surface roughness
Tensile strength
Thermoplastic resins
X ray photoelectron spectroscopy
X-rays
title Facile method to enhance the mechanical interfacial strength between carbon fibers and polyamide 6 using modified silane coupling agents
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