New research discusses a liquid crystalline wet-spinning process as a means of producing polymer-carbon nanotube composite fibers that are highly oriented and possess superior modulus, strength, and electrical conductivity.
By Hussain AhmedMar 7 2023Reviewed by Megan Craig, M.Sc. Carbon nanotubes are a strong and lightweight material with high electrical conductivity, which could potentially surpass the performance of existing carbon fibers. However, producing fibers with these properties is challenging, and commercializing them is difficult due to the high cost of carbon nanotubes.
Carbon Fibers Carbon fibers are a type of material composed of thin strands of carbon atoms that have exceptional mechanical properties, including high strength, stiffness, and resistance to deformation. These properties make them highly sought after in many industries, including aerospace, defense, automotive, sports equipment, and renewable energy.
Use of Carbon Nanotubes in CFs Semiconductors eBook Compilation of the top interviews, articles, and news in the last year. Download a free copy Carbon nanotubes are added to carbon fibers to improve their mechanical properties. CFs are already known for their high strength and stiffness, but incorporating CNTs can further enhance these properties.
Highlights of the Current Study In this study, the researchers developed an economic fabrication technology for carbon nanotube-based composite carbon fibers. To create the composite fibers, the researchers effectively dispersed the CNTs and the polymer in CSA without physical or chemical treatment. This allowed for the hybridization of CNTs and the polymer. High-performance fibers were obtained by wet-spinning without high-temperature heat treatment.
The carbon nanotube/polyimide compound also enhanced the orientation of the carbon nanotubes. It was observed that replacing up to 50% of the carbon nanotubes with low-cost polyimide helped to lower the overall cost without compromising the mechanical properties of the fibers.
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