Abstract
LaRCTM-IA, the polyimide prepared with 3,4′-oxydianiline (3,4′-ODA) and oxydiphthalic anhydride (ODPA), is useful as a film, coating, adhesive, and composite matrix. The high temperature capability and fire-resistance of polyimides also makes them attractive candidates for textile fibers for a variety of uses in the automotive, chemical, and aerospace industries. This research describes for the first time the melt-spinning of phthalic anhydride endcapped LaRCTM-IA and the effects of processing conditions on the mechanical properties of slightly-drawn fibers. Average draw ratios varied from 1 to 3.9. Tensile strengths ranged from 103 to 159 MPa; moduli ranged from 2.80 to 3.21 GPa; elongations at break ranged from 14 to 103%. For comparison, tensile properties of compression-molded films prepared at the same temperatures are also reported. Melt-extruded fibers and melt-pressed films of another thermoplastic, ULTEM®, were also fabricated. ULTEM® fibers exhibited tensile strengths ranging from 138 to 207 MPa for average draw ratios of 4.5 to 10.3. Moduli ranged from 2.70 to 3.22 GPa. Elongations at break ranged from 47 to 111%.
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References
R.S. Irwin, US Patent 3,415,782, E. I. DUPont & Co. (1968).
R.S. Irwin, US Patent 4,640,972, E. I. DUPont & Co. (1987).
T. Kaneda et al., J. Appl. Polym. Sci. 32, 3133 (1986).
C.E. Sroog, Progr. Polym. Sci. 16, 561 (1991).
W.E. Dorogy, Jr. and A.K. St. Clair, J. Appl. Polym. Sci. 49, 501 (1993).
Engineered Materials Handbook, Engineering Plastics(ASM International, Metals Park, OH, 1988), vol. 2, pp. 378-388.
R.E. Lyon, Advanced fire-safe aircraft materials program, Final Report, January 1996, Office of Aviation Research DOT/FAA/AR-95/98.
U. Sorathia, T. Dapp, and J. Kerr, Fire and Materials 16, 119 (1992).
R.G. Diehl, Proceedings of the International Conference for the Promotion of Advanced Fire Resistant Aircraft Materials, Atlantic City, NJ, 1993, pp. 93.
D.J. Progar and T.L. St. Clair, Journal of Adhesion Science and Technology 4(7), 527 (1990); US Patent 5 147 966, NASA Langley Research Center (Sept. 1992).
C.I. Croall and T.L. St. Clair, Journal of Plastic Film and Sheeting 8, 172 (1992).
C.C. Fay and A.K. St. Clair, Polymer Preprints 37(1), 817 (1996).
T.H. Hou, N.J. Johnston, and T.L. St. Clair, High Performance Polymers 7, 105 (1995).
P.R. McDaniel and T.L. St. Clair, Materials Research Society 405, 535 (1995).
P.R. McDaniel and T.L. St. Clair, Science and Technology of Atomically Engineered Materials, edited by P. Jena, S.N. Khanna, and B.K. Rao (World Scientific, 1996), pp. 547.
A.C. Chang and T.L. St. Clair, US Patent 5,464,928, NASA Langley Research Center (1995).
T.L. St. Clair and A.C. Chang, NASA Tech Brief, May 1995.
Extrusion and Other Plastics Operations, edited by N.M. Bikales (Wiley-Interscience, New York, 1971), p. 35.
A.S. Abhiraman and G.E. Hagler, J. Appl. Polym. Sci. 33, 809 (1987).
L.C.T. Lin and J. Hauenstein, J. Appl. Polym. Sci. 18, 3509 (1974).
S.M. Yang, Heat transfer science and technology, Proceedings of the International Symposium, Beijing (Hemisphere Publ., Washington, DC, 1987), pp. 153-159.
K. Dorsey, Formation, morphology, and properties of oriented LaRC-IA filaments, Masters thesis, Department of Chemical Engineering, Georgia Institute of Technology, 1997.
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Fay, C.C., Hinkley, J.A., St. Clair, T.L. et al. Mechanical Properties of LaRCTM-IA and ULTEM® Melt-Extruded Fibers and Melt-Pressed Films. Advanced Performance Materials 5, 193–200 (1998). https://doi.org/10.1023/A:1008630431071
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DOI: https://doi.org/10.1023/A:1008630431071