High-elongation poly-p-phenylene ben-zobisthiazole fiber and preparation method thereof

• Main Authors: FAN XINNIAN, HUANG ZHICHUAN, ZHAO LIANG, FU XINGWEI, XU WEI
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2019
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to a high-elongation poly-p-phenylene ben-zobisthiazole fiber and a preparation method thereof, and belongs to the technical field of high-performance fiber preparation. According to the high-elongation poly-p-phenylene ben-zobisthiazole fiber, a poly-p-phenylene ben-zobisthiazole polymer with the specific viscosity number being 15-35 dL/g is adopted as a raw material, and the fiber is prepared in a wet spraying spinning mode; the binding tensile strength of the high-elongation poly-p-phenylene ben-zobisthiazole fiber is 5.4-5.8 Gpa, the breaking elongation is 3.5-4.5%, the tensile modulus is 140-180 GPa, and the density is 1.53-1.54 g/cm . The PBO fiber has the high elongation, other indexes are also excellent and balanced, the fiber has the more excellent bullet-proof and impact resistance, the fiber is particularly applicable to the bullet-proof field, the national gap is filled, and the fiber is applicable to industrial large-scale production. 本发明涉及一种高伸长率聚对苯撑苯并二噁唑纤维及其制备方法，属于高性能纤维制备技术