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Carbon Fiber - OSTI GOV

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Last Updated: 10 January 2023

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Cost-effective carbon fiber precursor selections of polyacrylonitrile-derived blend polymers: carbonization chemistry and structural characterizations

From these simulations, we find that the PAN/cellulose blend has the highest carbon yield and the most common all-carbon ring formation. We find that the acetals of CL can initiate cyclization of the blend precursor, allowing for the search for CL derivatives or other forms of bio-based polymers with similar properties as alternate blends. oxidized PAN, PAN/nylon 6,6, and PAN/CL were all tested for the four key precursors, i. e. , PAN, Cu2013C bond lengths, and sp2 C atom ratios. In addition, we investigated the physical characteristics of the four major precursors, i. e. , PAN, oxidized PAN, oxidized PAN, PAN/CL oxidized PAN, PAN Since CL is naturally abundant and eco-friendly for production, we recommend PAN/CL as a cost-effective alternative CF precursor, PAN/CL has a high carbon yield with significant all-carbon ring formation, and PAN/CL based CFs may be a mechanical property enhancement, we suggest PAN/CL as a cost-effective alternative CF precursor since it does not require oxidation treatment, PAN/CL does not require oxidation treatment, PAN/CL does not require ring formation.

Source link: https://www.osti.gov/biblio/1869060


Closing the Loop on Automotive Carbon Fiber Prepreg Manufacturing Scrap

The project showed how to u201cclose the loop u201d on carbon fiber by converting industrial carbon fiber scrap into fresh functional components in an automotive lightweighting application. Carbon fiber is expensive to produce, so reuse of existing fiber material can reduce costs and increase sustainability. Carbon fiber is a carbon fiber that is primarily recyclable, so recycling recycled fiber materials can save costs and increase sustainability. Carbon fiber is an advanced fiber product that is both low-cost-intensive to produce. Sizing evaluations were performed on Vartegau2019s chemically recycled intermediate modulus fiber as well as standard modulus dry scrap, which was oversized with Michelman's sizing. Similar mechanical properties and fiber distribution were found in injection molded test specimens and benchmark samples, according to benchmark specimens. Given the positive results of the sized standard modulus material found in the initial micro-compounding experiments, the project team predicted that milestone mechanical benchmarks could be achieved. The project team oversized intermediate modulus dry fibers and coated them with BASF's project resin using a 40 mm compounder to compare the results. Both the project milestone and the Ford specification met the target set out. A series of prototype parts were successfully produced, but with instances of short shot components due to the carbon fiber's high thermal conductivity in comparison to glass fiber for which the prototype tool was intended. The project found that recycled carbon fiber is a viable option in fiber reinforced compound, adding more strength and modulus for applications that need them.

Source link: https://www.osti.gov/biblio/1835202


Interface mechanics of carbon fibers with radially-grown carbon nanotubes

In this paper, an atomistic modeling system is used to investigate composite architecture's interface/interphase of composite architecture with carbon fibers containing radially grown carbon nanotubes. A polymeric functional coating for the carbon fiber surface, which also serves as a substrate for CNT expansion, is specifically designed. In order to establish the nanoscale model, virtual deformation simulations and compared to experimental values reported in literature are used to determine the fuzzy fiber/epoxy interphase.

Source link: https://www.osti.gov/biblio/1567130


Synthesis, spinning, and properties of very high molecular weight poly(acrylonitrile- co -methyl acrylate) for high performance precursors for carbon fiber

Polymerization of high molecular weight polyacrylonitrile-co methyl acrylate polymers with weight average molecular weights of at least 1. 7 million g/mole were consistently achieved in this paper using emulsion polymerization. The hybrid spinning process coupled with VHMW polymers produced precursor fibers with high tensile strength and 15. 9 GPa in elastic modulus, with small filament diameters ranging from 954 MPa to 15. 9 GPa.

Source link: https://www.osti.gov/biblio/1570919

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions