Organo-soluble, segmented rigid-rod polyimides. Synthesis and properties

F. W. Harris, Lien-Chung Hsu, C. J. Lee, B. S. Lee, F. Arnold, S. Z.D. Cheng

研究成果: Paper

摘要

Several segmented, rigid-rod polyimides have been prepared that are soluble in organic solvents in their fully imidized form. The polymers were prepared from commercial dianhydrides and 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl (TFMB). Their intrinsic viscosities ranged from 1.0 to 4.9 dL/g. Tough, colorless films could be cast from m-cresol solutions at 100°C. The polymers had glass transition temperatures (Tgs) above 275°C and displayed outstanding thermal and thermo-oxidative stability. Fibers were prepared from the 3,3′,4,4′-tetracarboxybiphenyl dianhydride (BPDA) based polymers that had moduli of 130 GPa and tensile strengths of 3.2 GPa. The thermal expansion coefficients and dielectric constants of thin films (20-25 μm) of the polymers were as low as -2.40 × 10-6 and 2.5, respectively.

原文English
出版狀態Published - 1991 十月 1
事件Abstracts of the 4th International Conference on Polyimides - Ellenville, NY, USA
持續時間: 1991 十月 301991 十一月 1

Other

OtherAbstracts of the 4th International Conference on Polyimides
城市Ellenville, NY, USA
期間91-10-3091-11-01

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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  • 引用此

    Harris, F. W., Hsu, L-C., Lee, C. J., Lee, B. S., Arnold, F., & Cheng, S. Z. D. (1991). Organo-soluble, segmented rigid-rod polyimides. Synthesis and properties. 論文發表於 Abstracts of the 4th International Conference on Polyimides, Ellenville, NY, USA, .