Effect of Fiber Side-Feeding on Various Properties of Nickel-Coated Carbon-Fiber-Reinforced Polyamide 6 Composites Prepared by a Twin-Screw Extrusion Process

In the present study, how side-feeding of NiCF during twin-screw extrusion processing influences the fiber aspect ratio and thermal, mechanical, electrical, and electromagnetic properties of nickel-coated carbon fiber (NiCF)-reinforced polyamide 6 (PA6) composites was explored. For this, the fiber l...

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Bibliographic Details
Published in:Journal of composites science 2023-02, Vol.7 (2), p.68
Main Authors: Jeong, Naeun, Cho, Donghwan
Format: Article
Language:English
Subjects:
Aspect ratio
Carbon fiber reinforced plastics
Carbon fibers
Coated fibers
composite
Composite materials
Deflection
Dynamic stability
Electric currents
Electric properties
Electrical resistivity
Electromagnetic interference
Electromagnetic properties
Electromagnetic shielding
Electromagnetism
Engineering
extrusion
Extrusion coating
Fiber composites
Fiber reinforced polymers
Injection molding
Mechanical properties
Metals
Nickel
nickel-coated carbon fiber
Plastics
Plating
polyamide 6
Polyamide resins
Polyamides
Polymer matrix composites
properties
R&D
Research & development
side-feeding
Storage modulus
Surface resistivity
Thermal stability
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Summary:In the present study, how side-feeding of NiCF during twin-screw extrusion processing influences the fiber aspect ratio and thermal, mechanical, electrical, and electromagnetic properties of nickel-coated carbon fiber (NiCF)-reinforced polyamide 6 (PA6) composites was explored. For this, the fiber length distribution, thermal stability, heat deflection temperature, dynamic mechanical property, tensile, flexural, electrical resistivity, and electromagnetic interference shielding effectiveness (EMI SE) properties of NiCF/PA6 composites were extensively investigated. Chopped NiCF was regularly fed via either a main feeder or a side feeder and NiCF/PA6 pellets with different fiber-feeding pathways were prepared. The side-feeding effect of NiCF on the fiber length distribution and the composite properties was studied. The thermal stability, heat deflection temperature, storage modulus, tensile, flexural, and surface resistivity, and EMI SE properties of the NiCF/PA6 composites strongly depended not only on the NiCF content but also on the feeding method (main-feeding or side-feeding) upon extrusion processing, indicating that the fiber length distribution relevant to the fiber aspect ratio was critically important to enhance the composites’ properties. As a result, the NiCF/PA6 composites produced via side-feeding of NiCF exhibited an NiCF distribution longer than that produced via main-feeding, leading to enhancement of the thermal stability, heat deflection temperature, storage modulus, tensile, flexural, and EMI SE properties, strongly depending on the NiCF content.
ISSN:2504-477X
2504-477X
DOI:10.3390/jcs7020068