METHOD OF PRODUCTION OF SYNTHETIC ORGANIC AROMATIC HETEROCYCLIC ROD-SHAPED FIBERS OR FILMS POSSESSING HIGH TENSILE STRENGTH AND/OR HIGH MODULUS OF ELASTICITY IN TENSION

摘要

FIELD: manufacture of high-strength fibers and films.;SUBSTANCE: proposed method of production of synthetic organic aromatic heterocyclic rod-shaped fibers or films includes the following stages: molding the fiber or film; loading the fiber or film in presence of technological additive at temperature below boiling point of this additive but higher than minus 50 C at tension equal to 10-95% of fiber or film rupture strength; removal of technological additive and/or heating at tension which is equal to 10-95% of fiber or film rupture strength. Proposed method also includes production of PIPD fiber at line density of monofilament within 0.1-500 dtex and average tensile strength exceeding 3200 mN/tex, as well as production of film whose modulus of elasticity is no less than 14 Gpa, 20 Gpa being preferable.;EFFECT: enhanced tensile strength and increased modulus of elasticity.;11 cl, 2 tbl