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A high-temperature polyimide reinforced with silica fibre

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Abstract

Poly-[N,N′-(4,4′ oxydiphenylene) pyromellitimide] has been reinforced with unidirectionally aligned silica fibre. A partial pre-cure of the basic laminate before lay-up in the mould successfully prevented porosity and strength degradation in the final composite structure.

Samples heated for periods up to 100 h and temperatures up to 400° C in circulating air retained 50 to 90% of their original strength. For all the samples, the dynamic modulus of elasticity was in the range 4.55 to 4.95×105 lb/in2 (3.20 to 3.48×105 kg/cm2), the fibre content being 43 to 47.5% by volume. This material incurred a 5% weight loss on heating in air at 350° C for 100 h.

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Authors and Affiliations

  1. Composite Materials Department, Rolls-Royce Ltd, Derby, UK

    A. E. Standage & W. N. Turner

Authors
  1. A. E. Standage
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  2. W. N. Turner
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Standage, A.E., Turner, W.N. A high-temperature polyimide reinforced with silica fibre. J Mater Sci 2, 103–111 (1967). https://doi.org/10.1007/BF00549568

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  • DOI: https://doi.org/10.1007/BF00549568

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