Journal Article

Relationship between the tensile modulus and the thermal conductivity perpendicular and in the fiber direction of PAN-based carbon fibers

Retsch, Markus, Altstädt, Volker, Bard, Simon, Demleitner, Martin, Ruckdäschel, Holger, Tran, Thomas, Schönl, Florian, Rosenfeldt, Sabine

2024

Overview

A thorough knowledge and understanding of the structure–property relationship between thermal conductivity and C-fiber morphology is important to estimate the behavior of carbon fiber components, especially under thermal loading. In this paper, the thermal conductivities of different carbon fibers with varying tensile modulus were analyzed perpendicular and parallel to the fiber direction. Besides the measurement of carbon fiber reinforced polymers, we also measured the thermal conductivity of single carbon fibers directly. The measurements clearly proved that the thermal conductivity increased with the tensile modulus both in fiber and perpendicular direction. The increase is most pronounced in fiber direction. We ascribed the increase in tensile modules and thermal conductivity to increasing anisotropy resulting from the orientation of graphitic domains and microvoids. Graphical abstract

• Publisher: Springer Nature Singapore,한국탄소학회,Springer Nature B.V
• Subject: Anisotropy / Carbon / Carbon fiber reinforced plastics / Carbon fibers / Cellulose / Characterization and Evaluation of Materials / Chemistry and Materials Science / Conductivity / Fiber reinforced polymers / Fibers / Heat conductivity / Heat transfer / High temperature / Materials Engineering / Materials Science / Mechanical properties / Modulus of elasticity / Morphology / Nanotechnology / Nitrogen / Original Article / Polymers / Tensile strength / Thermal conductivity / 자연과학일반