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Polybenzazole fiber and article comprising the same

A technology of polybenzazole fiber and fiber, applied in the same field as No. 2003-424654 and No. 200, which can solve problems such as not being resistant to bending fatigue

Inactive Publication Date: 2007-01-03
TOYO TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with para-aramid fiber, carbon fiber is expected to improve the performance of yacht sails with high tensile elastic modulus, but on the other hand, there is a problem that it is not resistant to bending fatigue and is weak

Method used

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  • Polybenzazole fiber and article comprising the same
  • Polybenzazole fiber and article comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] Under nitrogen flow, at 60°C, 334.5g of 4,6-diaminoresorcinol dihydrochloride, 260.8g of terephthalic acid, and 2078.2g of 122% polyphosphoric acid were stirred for 1 hour, then slowly heated up to separate The reaction was carried out at 135°C, 150°C, and 170°C for 25 hours, 5 hours, and 20 hours. Add 14.8 g ± 14.8 g of poly (p-phenylene benzobisoxazole) (poly (p-phenylenebenzobisoxazole)) spinning stock solution with an intrinsic viscosity of 29 dL / g measured by the methanesulfonic acid solution obtained at 2.0 kg. forest (threne) and stirred to mix.

[0126] Thereafter, spinning was carried out under the conditions that the filament diameter of the single yarn became 11.5 μm and 1.5 denier. At a spinning temperature of 175°C, the spinning dope is extruded from a nozzle with a hole diameter of 0.18 mm and a number of holes of 166 to form filaments, which are converged at an appropriate position and immersed in the first cleaning tank arranged to make multifilaments ...

Embodiment 2

[0140] Under nitrogen flow, at 60°C, 334.5g of 4,6-diaminoresorcinol dihydrochloride, 260.8g of terephthalic acid, and 2078.2g of 122% polyphosphoric acid were stirred for 1 hour, then slowly heated up to separate The reaction was carried out at 135°C, 150°C, and 170°C for 25 hours, 5 hours, and 20 hours. 14.8 g of copper phthalocyanine was added to 2.0 kg of the obtained poly(p-phenylene benzobisoxazole) spinning stock solution having an intrinsic viscosity of 30 dL / g measured from a 30° C. methanesulfonic acid solution, and stirred and mixed.

[0141] Thereafter, spinning was carried out under the conditions that the filament diameter of the single yarn became 11.5 μm and 1.5 denier. At a spinning temperature of 175°C, the spinning dope is extruded from a nozzle with a hole diameter of 0.18 mm and a number of holes of 166 to form filaments, which are converged at an appropriate position and immersed in the first cleaning tank arranged to make multifilaments and solidified. ...

Embodiment 3

[0155] Under nitrogen flow, at 60°C, 334.5g of 4,6-diaminoresorcinol dihydrochloride, 260.8g of terephthalic acid, and 2078.2g of 122% polyphosphoric acid were stirred for 1 hour, then slowly heated up to separate The reaction was carried out at 135°C, 150°C, and 170°C for 25 hours, 5 hours, and 20 hours. 14.8 g of copper phthalocyanine was added to 2.0 kg of the obtained poly(p-phenylene benzobisoxazole) spinning stock solution having an intrinsic viscosity of 30 dL / g measured from a 30° C. methanesulfonic acid solution, and stirred and mixed.

[0156]Thereafter, spinning was carried out under the conditions that the filament diameter of the single yarn became 11.5 μm and 1.5 denier. At a spinning temperature of 175°C, the spinning dope is extruded from a nozzle with a hole diameter of 0.18 mm and a number of holes of 166 to form filaments, which are converged at an appropriate position and immersed in the first cleaning tank arranged to make multifilaments and solidified. ...

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Abstract

Polybenzazole fibers which have excellent durability under high-temperature high-humidity conditions even after threads thereof are damaged to develop a kink band in a post-processing step for a woven fabric, knitting, braid, rope, cord, etc. Also provided are articles comprising the fibers, especially a spun yarn, rubber-reinforcing material, fiber-reinforced composite material, woven or knit fabric, knifeproof material or bulletproof vest, rope, sailcloth, etc.

Description

technical field [0001] This patent application is respectively related to Japanese patent application No. 2003-412681, No. 2003-424648, No. 2003-424649, No. 2003-424650, No. No. 2003-424653, No. 2003-424654, and No. 2003-424655 claim priority, and are hereby incorporated by reference in their entirety into this specification. [0002] The present invention relates to the post-processing of fabrics, braids, braids, ropes, cords, etc., even after yarns are damaged to produce kink bands on the yarns, which have excellent performance under high temperature and high humidity. Durable polybenzazole (Poly benzazole) fibers, and articles made of them, especially textile yarns, rubber reinforcements, fiber-reinforced composite materials, braids, knife-resistant materials or bulletproof vests, ropes, canvases, etc. Background technique [0003] Polybenzazole fibers made of polybenzoxazole, polybenzothiazole, or their copolymers are known as fibers having high strength and high heat r...

Claims

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Application Information

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IPC IPC(8): D01F6/74D01F6/96
Inventor 雾山晃平村濑浩贵阿部幸浩
Owner TOYO TOYOBO CO LTD
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