Title: CO-MOLDING HIGH TEMPERATURE EROSION COATINGS FOR THERMOSET POLYIMIDE COMPOSITES

Authors: Kaylee A. Smith, Colleen Rosania, Joe Cook, Jonathan Clemons, Richard Bozicevich

DOI: 10.33599/nasampe/s.23.0046

Abstract: High temperature (200-260 °C) military composite engine components made of carbon fiber thermoset materials are susceptible to erosion damage. Evidenced by wear seen during operation, erosion protection remains a challenge for composites in the engine air flow path. In this paper, we investigate polyetheretherketone (PEEK), thermoplastic polyimide (TPI), and ceramic fabric (Nextel™) as potential high temperature erosion coatings for thermoset polyimide composite engine components. We evaluate the erosion protection materials for two qualities: (1) co-moldability with thermoset polyimide composite panels, and (2) erosion resistance to a sandblasting test. Autoclave and compression molding were used to test co-moldability with different manufacturing methods. The compression molding process was optimized to reduce surface defects using a pre-imidization step before the erosion protection layer was applied and final cure was completed. Co-molded test panels were cut into small coupons for sandblasting. After 60 s of alumina sandblasting PEEK had negligible mass loss, whereas the TPI and ceramic fabric had roughly the same erosion rate as the uncoated polyimide laminate.

References: [1] Alqallaf, J. & Teixeira, J. A. “Quantifying the Economic Benefits of Using Erosion Protective Coatings in a Low-Pressure Compressor (Aero-Engine): A Case Study Evaluation.” Processes 10(2) (2022), DOI: 10.3390/pr10020385. [2] Pandy, Dennis R. “DEVELOPMENT AND CALIBRATION OF A MACH 1.5 SAND EROSION TEST APPARATUS.” Wright-Patterson Air Force Base, OH: 1972. 9 Jan. 2023 >https://apps.dtic.mil/sti/pdfs/AD0743309.pdf<. [3] Zhang, S., Zhang, J., Zhu, B., Niu, S., Han, Z. & Ren, L. “Progress in Bio-inspired Anti-solid Particle Erosion Materials: Learning from Nature but Going beyond Nature.” Chinese Journal of Mechanical Engineering (English Edition) 33(1) (2020), DOI: 10.1186/s10033-020-00458-y. [4] Andrews, D. R. “An analysis of solid particle erosion mechanisms.” J Phys D Appl Phys 14 (1981): 1979-91, DOI: 10.1088/0022-3727/14/11/006. [5] Tilly, G. P. “EROSION CAUSED BY AIRBORNE PARTICLES.” Wear 14(1) (1969): 63-79, DOI: 10.1016/0043-1648(69)90035-0. [6] Hamed, A. A., Tabakoff, W., Rivir, R. B., Das, K. & Arora, P. “Turbine Blade Surface Deterioration by Erosion.” J Turbomach 127(3) (2005): 445-452, DOI: 10.1115/1.1860376. [7] Tabakoff, W., Hamed, A. & Shanov, V. “Blade Deterioration in a Gas Turbine Engine.” International Journal of Rotating Machinery 4(4) (1998): 233-241, DOI: 10.1155/S1023621X98000190. [8] Demasi-Marcin, J. T. & Gupta, D. K. “Protective coatings in the gas turbine engine.” Surf Coat Technol 68/69 (1994): 1-9, DOI: 10.1016/0257-8972(94)90129-5. [9] Thakare, J. G., Pandey, C., Mahapatra, M. M. & Mulik, R. S. “Thermal Barrier Coatings—A State of the Art Review.” Metals and Materials International 27 (2021): 1947-68, DOI: 10.1007/s12540-020-00705-w. [10] Bai, T., Liu, J., Zhang, W. & Zou, Z. “Effect of surface roughness on the aerodynamic performance of turbine blade cascade.” Propulsion and Power Research 3(2) (2014): 82-89, DOI: 10.1016/j.jppr.2014.05.001. [11] Wang, X. & Zou, Z. “Uncertainty analysis of impact of geometric variations on turbine blade performance.” Energy 176 (2019): 67-80, DOI: 10.1016/j.energy.2019.03.140. [12] Calvert, M. E. & Wong, T. “Aerodynamic Impacts of Helicopter Blade Erosion Coatings.” 30th AIAA Applied Aerodynamics Conference. New Orleans, Louisiana, 25-28 Jun. 2012. American Institute of Aeronautics and Astronautics, DOI: 10.2514/6.2012-2914. [13] “KetaSpire® KT-820 polyetheretherketone.” 9 Jan. 2023 >https://catalog.ulprospector.com/datasheet.aspx?I=42041&FMT=PDF&E=96632<. [14] “THERMALIMIDE RCBS Ultra high temperature release film.” Airtech Europe. 9 Jan. 2023. >https://www.aero-consultants.ch/view/data/3285/Aero%20Consultings/Produkte/Thermalimide_RCBS-EN.pdf<. [15] Feng, X. & Liu, J. “Thermoplastic Polyimide (TPI).” High Performance Polymers and Their Nanocomposites, Scrivener Publishing LLC, 2018. pp. 149-219, DOI: 10.1002/9781119363910.ch6. [16] “3MTM NextelTM Ceramic Fibers and Textiles Technical Reference Guide.” 3M, 2021. 9 Jan. 2023 >https://multimedia.3m.com/mws/media/1327055O/3m-nextel-technical-reference-guide.pdf<. [17] Magato, J. & Klosterman, D. “Development of a methodology for characterizing reaction kinetics, rheology, and in situ compaction of polyimide prepregs during cure.” J Compos Mater 54(6) (2020): 835-843, DOI: 10.1177/0021998319869433. [18] ASTM Standard G76-18, 2018, “Standard Practice for Conducting Erosion Tests by Solid Particle Impingement Using Gas Jets” ASTM International, West Conshohocken, PA, 2018, DOI: 10.1520/G0076-18, >www.astm.org<. [19] “Discharge of Air Through an Orifice.” 21 Feb. 2018. 9 Jan. 2023 >https://blog.exair.com/2018/02/21/discharge-of-air-through-an-orifice/ (accessed Jan. 08, 2023)<. [20] Mills, David. “Erosive Wear.” Pneumatic Conveying Design Guide, Elsevier, 2016. pp. 617-642. DOI: 10.1016/b978-0-08-100649-8.00027-5. [21] Cole, K. C. & Casella, L. G. “Fourier transform infrared spectroscopic study of thermal degradation in films of poly(etheretherketone).” Thermochimica Acta (1992): 209-228, DOI: 10.1016/0040-6031(92)87021-2. [22] Patel, P., Hull, T. R., McCabe, R. W., Flath, D., Grasmeder, J. & Percy, M. “Mechanism of thermal decomposition of poly(ether ether ketone) (PEEK) from a review of decomposition studies.” Polym Degrad Stab 95(5) (2010): 709-718, DOI: 10.1016/j.polymdegradstab.2010.01.024. [23] Denault, J. & Dumouchel, M. “Consolidation Process of PEEK/Carbon Composite for Aerospace Applications.” Advanced Performance Materials 5 (1998): 83–96, DOI: 10.1023/A:1008638105370.

Conference: SAMPE 2023

Publication Date: 2023/04/17

SKU: TP23-0000000046

Pages: 14

Price: $28.00