Title: Manufacturing of Carbon/Phenolic Composites Using High-Pressure Injection Process

Authors: Henry A. Haffner, Matik Heskin, and K. Chandrashekhara

DOI: 10.33599/nasampe/c.24.0332

Abstract: Carbon/phenolic composites have been ubiquitous in applications involving thermal ablation and high-pressure applications for aerospace structures; however, investigations are ongoing to produce parts with low porosity and high mechanical properties to reach the desired application. The study focused on investigating porosity and evaluating the integrity of carbon/phenolic composites manufactured through low-pressure and high-pressure injection processes, invariably focusing on achieving superior material properties, specifically low-porosity, and improved mechanical strength to meet desired applications. A modified high-pressure injection process has been developed to study the effect of increased pressure on part quality and porosity in juxtaposition to low-pressure injection. Non-destructive and destructive methods were employed to evaluate part quality and mechanical integrity. The outcomes revealed a noteworthy reduction in percent porosity through the utilization of the developed high-pressure injection process. Concurrently, there was a discernible enhancement in mechanical properties of the modified high-pressure injection process compared to parts manufactured using the low-pressure injection process. The significance of this study lies in its contribution to the ongoing efforts in material advancements by minimizing porosity in carbon/phenolic composites. The research aids in optimizing manufacturing processes, offering insights that pave the way for improved material performance in critical applications that require improved thermal ablation and corresponding strength.

References: [1] Pierce, R.S., Falzon, B.G., and Thompson, M.C. “A multi-physics process model for simulating the manufacture of resin-infused composite aerostructures,” Composites Science and Technology, vol. 149, pp. 269–279, 2017, doi: 10.1016/j.compscitech.2017.07.003. [2] Agarwal, B.D., Broutman, L.J., and Chandrashekhara, K. Analysis and performance of fiber composites, Fourth Edition. New Jersey, United States: John Wiley & sons, Inc, 2018. [3] Ahmad, S., Ali, S., Salman, M., and Baluch, A.H. “A comparative study on the effect of carbon-based and ceramic additives on the properties of fiber reinforced polymer matrix composites for high temperature applications,” Ceramics International, vol. 47, no. 24. pp. 33956–33971, 2021. doi: 10.1016/j.ceramint.2021.08.356. [4] Jagadeesh, P., Rangappa, S.M., Siengchin, S., Puttegowda, M., Thiagamani, S.M.K., Rajeshkumar, G., Kumar, M.H., Oladijo, O.P., Fiore, V., and Cuadrado, M.M.M. “Sustainable recycling technologies for thermoplastic polymers and their composites: A review of the state of the art,” Polymer Composites, vol. 43, no. 9, pp. 5831–5862, 2022, doi: 10.1002/pc.27000. [5] Guo, Y., Ruan, K., Shi, X., Yang, X., and Gu, J. “Factors affecting thermal conductivities of the polymers and polymer composites: A review,” Composites Science and Technology, vol. 193, no. March, p. 108134, 2020, doi: 10.1016/j.compscitech.2020.108134. [6] Asim, M., Saba, N., Jawaid, M., Nasir, M., Pervaiz, M., and Alothman, O.Y. “A review on Phenolic resin and its Composites,” Current Analytical Chemistry, vol. 13, no. June 2018, 2017, doi: 10.2174/1573411013666171003154410. [7] Bheemreddy, V., Chandrashekhara, K., Dharani, L.R., and Hilmas, G.E. “Computational study of micromechanical damage behavior in continuous fiber-reinforced ceramic composites,” Journal of Materials Science, vol. 51, no. 18, pp. 8610–8624, 2016, doi: 10.1007/s10853-016-0120-4. [8] Bo Madsen, H.L. “Physical and mechanical properties of unidirectional plant fibre composites—an evaluation of the influence of porosity,” Composites Science and Technology, vol. 63, pp. 1265–1272, 2003, doi: 10.1016/S0266-3538(03)00097-6. [9] Pupin, C., Ross, A., Dubois, C., Rietsch, J.C., and Ruiz, E. “Predicting porosity formation in phenolic resins for RTM manufacturing: The porosity map,” Composites Part A: Applied Science and Manufacturing, vol. 100, pp. 294–304, 2017, doi: 10.1016/j.compositesa.2017.05.023. [10] Cheon, J.H., and Shin, E.S. “Assessment of the ablation characteristics of carbon/phenolic composites using X-ray microtomography,” Composites Science and Technology, vol. 182, no. July, p. 107740, 2019, doi: 10.1016/j.compscitech.2019.107740. [11] Knop, A., Böhmer, V., and Pilato, L.A., “Phenol–Formaldehyde Polymers,” Comprehensive Polymer Science and Supplements, pp. 611–647, 1989, doi: 10.1016/b978-0-08-096701-1.00176-2. [12] Tang, K., Zhang, A.,Ge, T., Liu, X., Tang, X., and Li, Y. “Research progress on modification of phenolic resin,” Materials Today Communications, vol. 26, p. 101879, 2021, doi: 10.1016/j.mtcomm.2020.101879. [13] Weiler, S., Schwartzkopf, P., Haffner, H., and Chandrashekhara, K. “Development of a high-pressure infiltration process for phenol–formaldehyde matrix composites,” Polymer International, no. October 2023, doi: 10.1002/pi.6623. [14] Vita, A., Castorani, V., Germani, M., and Marconi, M. “Comparative life cycle assessment of low-pressure RTM, compression RTM and high-pressure RTM manufacturing processes to produce CFRP car hoods,” in Procedia CIRP, 2019, pp. 352–357. doi: 10.1016/j.procir.2019.01.109. [15] Sarkar, S., Sekharan, V.G., Mitra, R., and Roy, M. “The solid particle erosion behavior of carbon/carbon and carbon/phenolic composite used in re-entry vehicles,” Tribology Transactions, vol. 52, no. 6, pp. 777–787, 2009, doi: 10.1080/10402000903097411. [16] ASTM Standard D7264, “Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials”. 2012, pp. 1–11. doi: 10.1520/D7264.

Conference: CAMX 2024 | San Diego CA

Publication Date: 2024/9/9

SKU: TP24-0000000332

Pages: 9

Price: $18.00