Summary
High-strength and high-modulus poly(p-xylylene) (PPX) fibers show no creep at room temperature and retain at 200°C, in air or in nitrogen atmosphere, still 50 to 60% of their tensile strengths at room temperature, whereas the modulus does not change. In stress relaxation experiments PPX fibers have relaxed after 17.4 hours less than 4% of the initial stress whereas during the same period of time polyethylene fibers relax over 75% of the initial stress.
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van der Werff, H., Pennings, A.J. Creep resistance and high temperature strength of poly(p-xylylene) fibers. Polymer Bulletin 25, 379–384 (1991). https://doi.org/10.1007/BF00316909
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DOI: https://doi.org/10.1007/BF00316909