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

F. W. Harris, H. L.C. Hsu, C. J. Lee, B. S. Lee, F. Arnold, S. Z.D. Cheng

研究成果: Paper同行評審


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.

出版狀態Published - 1991
事件Abstracts of the 4th International Conference on Polyimides - Ellenville, NY, USA
持續時間: 1991 10月 301991 11月 1


ConferenceAbstracts of the 4th International Conference on Polyimides
城市Ellenville, NY, USA

All Science Journal Classification (ASJC) codes

  • 聚合物和塑料
  • 化學工程(雜項)


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