Process for obtaining a synthetic organic aromatic...

D - Textiles – Paper – 01 – D

Patent

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D01D 10/02 (2006.01) C08J 5/18 (2006.01) C08L 79/04 (2006.01) D01F 6/74 (2006.01)

Patent

CA 2490146

The invention pertains to a process for obtaining a synthetic organic aromatic heterocyclic rod fiber or film with high tensile strength and/or modulus comprising spinning a synthetic organic polymer to a aromatic heterocyclic rod fiber or obtaining the synthetic organic polymer as an aromatic heterocyclic rod film, followed by loading the fiber or film in the presence of a processing aid, at a temperature below the boiling point of the processing aid and above -50~- C, at a tension of 10 to 95 % of the fiber or film breaking strength, followed by removing the processing aid and/or performing a heating step at a tension of 10 to 95% of the fiber or film breaking strength.

L'invention a trait à un procédé permettant d'obtenir une fibre ou un film à filaments hétérocycliques aromatiques organiques synthétiques, qui présentent une résistance à la traction et/ou un module élevés. Ledit procédé consiste : à filer un polymère organique synthétique pour former une fibre à filaments hétérocyclique aromatique, ou à obtenir le polymère organique synthétique sous forme de film à filaments hétérocyclique aromatique ; puis à charger la fibre ou le film en présence d'un adjuvant de fabrication, à une température inférieure au point d'ébullition de l'adjuvant de fabrication et supérieure à 50 ·C, à une tension comprise entre 10 et 95 % de la force de rupture de la fibre ou du film ; puis à enlever l'adjuvant de fabrication, et/ou à procéder au chauffage, à une tension comprise entre 10 et 95 % de la force de rupture de la fibre ou du film.

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