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<p>This technical review introduces a groundbreaking strategy for improving carbon fiber performance through advanced microstructure control, overcoming the limitations of size effects. We pioneered the use of micromechanics to design microstructures that significantly improve carbon fiber performance. We subsequently developed innovative methods to control these fibers to achieve the desired microstructure. A key part of our research was the use of the Frontier Softmaterial Beamline (BL03XU beamline) at SPring-8, which allowed us to analyze structural variations within single fibers at the macroscopic, microscopic, and mesoscale levels. This approach led to the development of ultrastrong carbon fibers with a tensile strength improvement of approximately 10%, from 7 GPa to 8 GPa and a similar increase in compressive strength, all without altering the fiber diameter. These advances underscore the critical role of precise control of chemical reactions and continuous technological progress in enhancing the properties of carbon fibers. Our insights significantly contribute to potential applications of carbon fibers in various industries, particularly in the aerospace and energy sectors, where high-strength and lightweight materials are essential.</p>

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Ultrastrong carbon fibers achieved through nanoscale tailoring

  • 期刊论文

  • 发表日期：

    2025年7月29日

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  • Fumihiko Tanaka,
  • Jun Watanabe,
  • Tatsuya Nakatani,
  • Toru Ishikawa

摘要

This technical review introduces a groundbreaking strategy for improving carbon fiber performance through advanced microstructure control, overcoming the limitations of size effects. We pioneered the use of micromechanics to design microstructures that significantly improve carbon fiber performance. We subsequently developed innovative methods to control these fibers to achieve the desired microstructure. A key part of our research was the use of the Frontier Softmaterial Beamline (BL03XU beamline) at SPring-8, which allowed us to analyze structural variations within single fibers at the macroscopic, microscopic, and mesoscale levels. This approach led to the development of ultrastrong carbon fibers with a tensile strength improvement of approximately 10%, from 7 GPa to 8 GPa and a similar increase in compressive strength, all without altering the fiber diameter. These advances underscore the critical role of precise control of chemical reactions and continuous technological progress in enhancing the properties of carbon fibers. Our insights significantly contribute to potential applications of carbon fibers in various industries, particularly in the aerospace and energy sectors, where high-strength and lightweight materials are essential.