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Polybenzazole fiber and use thereof

一种聚吲哚纤维、纤维的技术，应用在纤维化学特征、单组分合成聚合物人造丝、船只建造等方向，能够解决无法长期地穿戴、穿着感差等问题

Inactive Publication Date: 2005-09-07
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, bulletproof vests using polyaramid fibers require a large amount of fibers to obtain the required protective performance, so they become heavy and thick, and the wearing feeling is poor, making it impossible to wear them for a long time

Method used

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  • Polybenzazole fiber and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Under a nitrogen stream, 334.5 g of 4,6-diaminoresorcinol dihydrochloride, 260.8 g of terephthalic acid, and 2078.2 g of 122% polyphosphoric acid were stirred at 60° C. for 30 minutes, and then slowly heated to allow them to The reaction was carried out at 135°C for 20 hours, at 150°C for 5 hours, and at 170°C for 20 hours. Add 29H, 31H-phthalocyanine salt (2-)- N29, N30, N31, N32 copper 15.2g and stir to mix. Spinning is then carried out as described above. Table 1 shows the results of a high-temperature, high-humidity storage test (80°C, 80RH%) and a light exposure test performed on the obtained silk.

Embodiment 2

[0105] To 2.0 kg of the poly(p-phenylene benzobisoxazole) stock solution with an intrinsic viscosity of 29 dL / g obtained in the same manner as in Example 1, bis-benzimidazolo[2,1-b:2′,1 15.2 g of '-i]benzo[lmn][3,8]phenanthroline-8,17-dione were stirred and mixed. Spinning is then carried out as described above. Table 1 shows the results of a high-temperature, high-humidity storage test (80°C, 80RH%) and a light exposure test performed on the obtained silk.

Embodiment 3

[0107] Add 9,19-dichloro-5,15-diethyl-5 , 15.2 g of 15-dihydrodioindo[2,3-c: 2′,3′-n]tribenzodioxazine and stirred and mixed. Spinning is then carried out as described above. Table 1 shows the results of a high-temperature, high-humidity storage test (80°C, 80RH%) and a light exposure test performed on the obtained silk.

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Abstract

The present invention relates to polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics containing in themselves an organic pigment having heat resistance as high as a thermal decomposition temperature of 200 DEG C. or higher, and soluble in a mineral acid and having group(s) of -N=and / or NH- in the molecule, such as any of perinones and / or perylenes, any of phthalocyanines, any of quinacridones, and any of dioxazines, wherein they have a strength retention of 50% or higher when exposed to light from a xenon lamp for 100 hours and having a tensile strength retention of 85% or higher after exposed to an atmosphere of a temperature of 80 DEG C. and a relative humidity of 80% for 700 hours. The polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics can be used for cords for reinforcing rubber, sheets and rods for reinforcing cement / concrete, composite materials, sail clothes, ropes, knife proof vests and bullet proof vests.

Description

technical field [0001] The present invention relates to a polybenzazole fiber having excellent durability when exposed to a high-temperature and high-humidity environment, and uses of the fiber. Background technique [0002] Polybenzazole fibers made of polybenzoxazole or polybenzothiazole or a copolymer thereof are known as fibers having high strength and high heat resistance. [0003] Usually, the manufacturing method of polybenzazole fiber is: after extruding the spinning dope containing the above-mentioned polymer or copolymer and acid solvent from the spinneret, it is immersed in a coagulating fluid (water or a mixture of water and inorganic acid) Let it solidify, then thoroughly wash it in a water bath to remove most of the solvent, then pass it through an aqueous tank of an inorganic alkali such as sodium hydroxide to neutralize the residual acid that was not extracted from the silk waste, and then dry it. [0004] As mentioned above, the polybenzazole fiber produced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H9/06D01F6/74D03D15/283E04C5/07
CPCB63H2009/0678B63H9/0657E04C5/073E04C5/07D01F6/74D07B1/025D07B2205/2096Y10T428/2913Y10T428/2967Y10T428/2969B63H9/0678B63H9/067D07B2801/10D02G3/48D01F1/04D03D15/587D03D15/513D03D15/283D02G3/44D10B2401/063D10B2401/04D10B2505/00D10B2501/04
Inventor 阿部幸浩松冈豪雾山晃平村濑浩贵中村宗敦野村幸弘江口弘则奥山幸成黑木忠雄一柳隆治馆盛宽
Owner TOYOBO CO LTD
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