Damping Behaviour of Multi-Walled Carbon Nanotubes Grafting on Carbon Fiber Reinforced Friction Material

N. K. Konada and K. N. S. Suman

Abstract: An automobile’s braking system plays an important role to control the vehicle at various operating speeds. At present, the brake friction industry is mainly focused on effectiveness of braking in addition to aesthetic considerations of an automobile. In this research, carbon fiber reinforced friction material is developed by grafting multi-walled carbon nanotubes functionalized (MWCNTS-F) on CF surface. The surface of CF is basically chemically inert and hydrophobic in nature and needs to be modified by grafting MWCNTS-F on its surface to increase hydroxyl or carboxyl groups. An attempt is made to improve the bonding strength between CF, polymer matrix and the remaining ingredients. Carbon fiber content after surface modification is varied in weight percentor wt% (2%, 3%, 4% and 5%) and mixed with the remaining ingredients of friction material. Composite sheets are prepared using hand lay-up method and characterized for damping, SEM, TGA and FTIR analysis. It is observed that MWCNTS-F grafted on CF 3 wt% possess good damping results. The results also reveal that, optimum selection of ingredients and surface treatment method on CF is the main reason for improvement of the composite’s interfacial adhesion and damping behavior.

Keywords:Multi walled carbon nanotubes, carbon fibers, chemical grafting, damping, interfacial shear strength

References

Chand, S. (2000). Review on carbon fiber for composite. Journal of Material Science, 35, 1303-1313.

Konada, N. K., & Suman, K. N. S. (2017a). Effect of pad and disc materials on the behaviour of disc brake against dynamic high speed loading conditions. International Journal of Automotive Engineering and Technologies, 6(3), 116-128.

Konada, N. K., & Suman, K. N. S. (2017b). Effect of pad and disc materials on the behaviour of disc brake against fluctuating loading conditions. Journal of Automobile Engineering and Applications, 4(2), 22-34.

Konada, N. K., & Suman, K. N. S. (2018). Effect of surface treatments on tensile and flexural properties of carbon fiber reinforced friction material. International Journal of Engineering and Manufacturing (IJEM), 8(3), 23-39.

Lu, H., & Yu, D. (2014). Brake squeal reduction of vehicle disc brake system with interval parameters by uncertain optimization. Journal of Sound and Vibration, 333, 7313-7325. 10.1016/j.advengsoft.2016.04.009

Liu, Y., & Kumar, S. (2012). Recent progress in fabrication, structure, and properties of carbon fibers. Polymer Reviews, 52(3), 234-258. https://doi.org/10.1080/15583724.2012.705410

Nacivet, S., & Sinou, J. J. (2017). Modal amplitude stability analysis and its application to brake squeal. Applied Acoustics, 116, 127-138. doi: 10.1016/j.apacoust.2016.09.010

Nouby, M., & Srinivasan, K. (2009). Disc brake squeal reduction through pad structural modifications. Paper presented at International Conference of Recent and Emerging Advanced Technologies in Engineering (ICREATE), Kuala Lumpur, Malaysia.

Sharma, M., Gao, S., Mäder, E., Sharma, H., Leong, Y. W., & Bijwe, J. (2014). Carbon fiber surfaces and composite interface Elsevier, Composites Science and Technology, 102, 35-50.

Soutis, C. (2005). Fiber reinforced composites in air craft construction. Progress Aerospace Sciences, 41(2), 143-151. https://doi.org/10.1016/j.paerosci.2005.02.004

Tanaka, K. (1977). Friction and wear of glass and carbon fiber filled thermoplastic polymers. Journal of Lubrication Technology, 99(4), 408-414. doi:10.1115/1.3453234

Tiwari, S., & Bijwe, J. (2014). Surface treatment of carbon fibers – a review. Procedia Technology, 14, 505-512. https://doi.org/10.1016/j.protcy.2014.08.064

Wang, D. W., Mo, J. L., Liu, M. Q., Ouyang, H., & Zhou, Z. R. (2016). Noise performance improvements and tribological consequences of a pad-on-disc system through groove textured disc surface. Tribology International, 102, 222-236. doi: 10.1016/j.triboint.2016.05.030