High-modulus, high-strength carbon fibre based on polyacrylonitrile
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-- The effect of the method of preliminary heat treatment and of the structure of fibre being subjected to boronation on the strength of high-modulus carbon fibres has been shown.
-- A moreoriented structure of the fibre subjected to boronation and stress relaxation during the heat-treatment process aid in bringing about an increase in strength of high-modulus carbon fibre up to 3.0–3.5 GPa at an elastic modulus greater than 700 GPa.
KeywordsPolymer Heat Treatment Elastic Modulus Carbon Fibre Stress Relaxation
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