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DIGITAL LIBRARY: CAMX 2023 | ATLANTA, GA | OCTOBER 30-NOVEMBER 2

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Phenylethynyl-terminated amic acid oligomer prepreg for high temperature composites

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Title: Phenylethynyl-terminated amic acid oligomer prepreg for high temperature composites

Authors: Masahiko Miyauchi, Hideki Yamamoto, Atsushi Kumasaki, Tejas Reddy, Masaya Kotaki

DOI: 10.33599/nasampe/c.23.0043

Abstract: Many polyimide based carbon fiber composites have been developed as lightweight materials in place of alloys of aluminum, steel and titanium in aerospace components used for high temperature applications. However, it has been difficult to design the 1st and 2nd ordered chemical structures of imide resins which enable to realize both high processability for molding composites and high thermal stability after curing. We prepared phenylethynyl (PEPA) terminated imide oligomers derived from 1,2,4,5-benzenetetracarboxylic dianhydride and 2-phenyl-(4,4'-diaminodiphenyl ether) with asymmetric and non-planar structure for the polyimide matrix resin of high heat resistant carbon fiber reinforced composites. The imide oligomers showed good minimum melt viscosity at higher than 300 oC for molding the cured resin films with good thermal and mechanical properties. Cured resin film showed a high Tg at 350 oC and Td5s at 550 oC. Surprisingly, the elongation-at-breaks of the cured resins was found to be extremely high (≷ 15 %). Preliminary results for processing of carbon fiber fabric prepregs using corresponding amic acid oligomer (precursor of imide oligomer) solution, thermal behavior of the imide resin in the prepreg before and after curing, and outstanding thermal and mechanical properties of the composites obtained at both room and elevated temperature are reported.

References: 1. Polyimides: Fundamental and Application, New York: Marcel Dekker, 1996 2. Polyamic Acids and Polyimides: Synthesis, Transformations and Structure Boca Raton: CRC Press, 1993 3. Polyimides: Fundamentals and Applications Ghosh, M. K., Mittal, K. L., New York: Marcel Dekker, 1996. 4. Serafini, T. T., Delvigs P., & Lightsey, G. R., “Thermally stable polyimides from solutions of monomeric reactants.” Journal of Applied Polym. Sci. 16 (1972): 905-915. 5. Cano, R. J., & Jensen, B. J. “Effect of molecular weight on processing and adhesive properties of the phenylethynyl-yerminated polyimide LARC™-PETI-5.” J. Adhesion 60 (1997): 113-123. 6. Hergenrother, P. M., & Smith Jr., J. G. “Chemistry and properties of imide oligomers end-capped with phenylethynylphthalic anhydrides.” Polymer, 35, (1994): 4857-4864. 7. Hergenrother, P. M., Connell, J. W., & Smith Jr., J. G. “Phenylethynyl containing imide oligomers.” Polymer 41 (2000): 5073-5081. 8. Meyer, G. W., Tan, B., & McGrath, J. E. “Solvent-resistant polyetherimide network systems via phenylethynylphthalic anhydride endcapping.” High Perform. Polym. 6 (1994): 423-435. 9. Holland, T. V., Glass, T. E., & McGrath, J. E. “Investigation of the thermal curing chemistry of the phenylethynyl group using a model aryl ether imide.” Polymer 41 (2000): 4965-4990. 10. Jensen, B. J., Bryant, R. G., Smith Jr., J. G., & Hergenrother, P. M. “Adhesive properties of cured phenylethynyl-terminated imide oligomers.”J Adhesion 54 (1995): 57. 11. Hou T., Jensen, B. J. & Hergenrother, P. M., “Processing and properties of IM7/PETI composites.” J. Comp. Matls. 30 (1996): 109-122. 12. Rommel, M., Konopka, L., & Hergenrother, P. M. “Process development and mechanical properties of IM7/LaRC PETI-5 composites” Proceedings of the 1996 28th International SAMPE Technical Conference, November 4-7, 1996, Seattle, WA, Society for the Advancement of Material and Process Engineering, USA, 1996, Vol. 28, pp 1-13. 13. Miyauchi, M., Kazama, K., Sawaguchi, T., & Yokota, R. “Dynamic tensile properties of a novel Kapton-type asymmetric polyimide derived from 2-phenyl-4,4’-diaminodiphenyl ether.” Polymer Journal 43 (2011): 866-868. 14. Miyauchi, M., Ishida, Y., Ogasawara, T., Yokota, R., Highly soluble phenylethynyl-terminated imide oligomers based on KAPTON-type backbone structures for carbon fiber-reinforced composites with high heat resistance. Polymer Journal 45 (2012): 594-600. 15. Miyauchi, M.; Ishida, Y.; Ogasawara, T.; Yokota, R., Synthesis and characterization of soluble phenylethynyl-terminated imide oligomers derived from pyromellitic dianhydride and 2-phenyl-4,4’-diaminodiphenyl ether. Reactive and Functional Polymers 73 (2013): 340-345. 16. Zhang, Y.; Miyauchi, M.; Nutt, S., Structure and properties of a phenylethynyl-terminated PMDA-type asymmetric polyimide. High Performance Polymers 31 (2018): 261-272. 17. Zhang, Y.; Miyauchi, M.; Nutt, S., Effects of thermal cycling on phenylethynyl-terminated PMDA-type asymmetric polyimide composites. High Performance Polymers 31 (2018): 861-871. 18. Zhang, Y.; Miyauchi, M.; Nutt, S., Moisture absorption and hydrothermal aging of phenylethynyl-terminated pyromellitic dianhydride-type asymmetric polyimide and composites. High Performance Polymers 31 (2018): 1020-1029. 19. Li X, Miyauchi M, González C, Nutt S. Thermal oxidation of PEPA-terminated polyimide. High Performance Polymers 31 (2019): 707-718 20. Nakamura, K., Ando, S., & Takeichi, T. “Thermal analysis and solid-state 13C NMR study of crosslink in polyimides containing acetylene groups in the main chain.” Polymer 42 (2001): 4045-4054.

Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000043

Pages: 11

Price: $22.00

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