Research on high temperature friction performance of carbon fiber composite materials

DOI

10.2991/978-94-6463-581-2_47How to use a DOI?

Keywords

Car body lightweight; Carbon fiber composites; High temperature friction; Friction coefficient; Wear mechanism

Abstract

Carbon fiber composites have a wide range of applications in body lightweighting due to their light weight, large friction coefficient and excellent mechanical properties. In the forming of body parts and subsequent operation, the composites have high requirements of available high temperature lubrication and wear resistance, therefore, this paper investigates the friction behavior of carbon fiber composites in different laying directions and temperatures, and studies the high temperature friction and wear mechanism through the friction coefficients obtained and the observation of friction morphology under the microscope. The results show that the friction coefficient of carbon fiber composites increases from 0.53 to 0.83 and 1.15 when the laying direction of carbon fiber composites is changed from 0º to 45º and 90º, respectively, during friction at room temperature. the confinement effect formed by the interconnection of resin and fibers at room temperature makes the fibers fracture transversally during the friction process and the fracture is disordered, which results in a large friction coefficient during sliding friction in the perpendicular direction of the fibers, and the friction coefficient of the carbon fiber composites is larger during sliding friction in the vertical fiber direction at 160ºC. The coefficient of friction of carbon fiber composites decreases with the increase of laying angle from 0º to 45º and 90º, i.e., from 0.54 to 0.25 and 0.22, respectively. The resin is easy to detach from the fibers due to the good softening and fluidity at high temperatures, the flow of resin plays a lubricating role in the friction interface, which reduces the coefficient of friction and the detachment of the fibers from the resin leads to easy fiber fracture, and the radial fracture of the fibers supports the friction head. The fiber plays a supporting role for the friction head, increasing the coefficient of friction when sliding friction in parallel fiber direction.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Hao Zhang
AU  - Xinyu Hu
AU  - Yong Liu
AU  - Bin Zhu
AU  - Yisheng Zhang
PY  - 2024
DA  - 2024/12/07
TI  - Research on high temperature friction performance of carbon fiber composite materials
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 382
EP  - 389
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_47
DO  - 10.2991/978-94-6463-581-2_47
ID  - Zhang2024
ER  -