Ultraviolet light-resistant PBO fiber and preparation method thereof

A UV-resistant and fiber-resistant technology, applied in fiber processing, fiber types, textiles and papermaking, etc., can solve the problem that the micro-morphology of PBO fibers cannot be changed, the UV-resistant agent cannot be bonded and covered, and the shear strength is not significantly improved, etc. problems, to achieve the effect of being conducive to processing, increasing surface properties, and improving firm strength

Active Publication Date: 2018-01-23
CHENGDU XINCHEN NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a large number of -COOH, -OH and other functional groups can be formed on the surface of PBO fibers by pure corona treatment, corona treatment cannot change the microscopic morphology of PBO fibers at the micron level, and corona treatment is only at the molecular level However, the molecular structure of PBO belongs to the conjugated structure of all aromatic heterocycles, and the molecular chain is a straight chain rod structure, with a high degree of orientation and regular crystal arrangement. The simple corona can only be used at the end of the molecular chain. Functional groups are added, so the amount of functional groups formed per unit surface area is very scarce, so that the maximum bonding coverage with the anti-ultraviolet light agent performance cannot be achieved. This is why Wang Baiya et al. have not improved the interlayer shear strength after simple corona treatment. obvious reason

Method used

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  • Ultraviolet light-resistant PBO fiber and preparation method thereof
  • Ultraviolet light-resistant PBO fiber and preparation method thereof
  • Ultraviolet light-resistant PBO fiber and preparation method thereof

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Embodiment 1

[0038] This embodiment proposes a PBO fiber resistant to ultraviolet light. The PBO fiber resistant to ultraviolet light is made of PBO tow as a raw material, which is sequentially subjected to surface chemical treatment, surface free radical reaction, anti-ultraviolet agent sizing treatment, and drying. The obtained PBO modified fiber has a dry breaking strength of 5.4Gpa, a wet breaking strength of 5.2Gpa and a wet modulus of 140Gpa.

[0039] In order to obtain UV-resistant PBO fibers, first select the PBO fibers produced by the conventional polymerization process, and use the PBO filaments obtained after the PBO fibers are spun, washed with phosphoric acid solution, and dried as raw materials, and then modified. In this embodiment, the spinning method is to dry-jet wet-spin the PBO fibers through twin-screw liquid crystal spinning, wherein the spinning temperature is controlled at 140°C, and the curling speed is 100m / min; phosphoric acid solution is used in the process of wa...

Embodiment 2

[0042] This embodiment proposes a PBO fiber resistant to ultraviolet light. The PBO fiber resistant to ultraviolet light is made of PBO tow as a raw material, which is sequentially subjected to surface chemical treatment, surface free radical reaction, anti-ultraviolet agent sizing treatment, and drying. The obtained PBO modified fiber has a dry breaking strength of 5.6Gpa, a wet breaking strength of 5.4Gpa and a wet modulus of 240Gpa.

[0043] In order to obtain UV-resistant PBO fibers, first select the PBO fibers produced by the conventional polymerization process, and use the PBO filaments obtained after the PBO fibers are spun, washed with phosphoric acid solution, and dried as raw materials, and then modified. In this embodiment, the spinning method is to dry-jet wet-spin the PBO fibers through twin-screw liquid crystal spinning, wherein the spinning temperature is controlled at 200°C, and the curling speed is 150m / min; phosphoric acid solution is used in the process of wa...

Embodiment 3

[0046] This embodiment proposes a PBO fiber resistant to ultraviolet light. The PBO fiber resistant to ultraviolet light is made of PBO tow as a raw material, which is sequentially subjected to surface chemical treatment, surface free radical reaction, anti-ultraviolet agent sizing treatment, and drying. The obtained PBO modified fiber has a dry breaking strength of 5.5Gpa, a wet breaking strength of 5.3Gpa and a wet modulus of 200Gpa.

[0047] In order to obtain UV-resistant PBO fibers, first select the PBO fibers produced by the conventional polymerization process, and use the PBO filaments obtained after the PBO fibers are spun, washed with phosphoric acid solution, and dried as raw materials, and then modified. In this embodiment, the spinning method is to dry-jet wet-spin the PBO fibers through twin-screw liquid crystal spinning, wherein the spinning temperature is controlled at 180°C, and the curling speed is 125m / min; phosphoric acid solution is used in the process of wa...

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Abstract

The invention discloses an ultraviolet light-resistant PBO fiber and a preparation method thereof. The ultraviolet light-resistant PBO fiber is prepared from PBO tows sequentially through surface chemical treatment, surface free radical reaction, anti-ultraviolet sizing treatment and drying. The ultraviolet light-resistant PBO fiber has the following parameters: the dry breaking strength is 5.4Gpa-5.6Gpa, the wet breaking strength is 5.2Gpa-5.4Gpa, and the wet modulus is 140Gpa-240Gpa. The ultraviolet light-resistant PBO fiber is prepared by modifying the PBO tows by virtue of the combinationof surface chemical treatment, surface free radical reaction and anti-ultraviolet sizing treatment, the PBO fiber can present relatively good ultraviolet resistance and can furthest preserve the mechanical properties of the PBO fiber, and the integral tensile strength and modules of the PBO fiber are not reduced.

Description

technical field [0001] The invention relates to a UV-resistant PBO fiber and a preparation method thereof, in particular to a UV-resistant p-poly-p-phenylenebenzobisoxazole (PBO) fiber obtained by a modification method, which belongs to special polymer materials field. Background technique [0002] PBO (poly-p-phenylenebenzobisoxazole) fiber is a high-performance aromatic heterocyclic organic fiber made by PBO through liquid crystal spinning technology. Its tensile strength and elastic modulus are about twice that of aramid fiber kevlar , and as a linear polymer, it is considered to have an ultimate modulus of elasticity. Due to its rigid molecular chain structure, PBO fiber has excellent heat resistance, and its heat resistance is 100°C higher than that of aramid fiber. It is an organic fiber with the best comprehensive performance at present. Therefore, it is also known as "21st century super fiber". Therefore, PBO fibers are widely used as reinforcements for aerospace ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/08D06M11/44D06M11/46D06M11/55D06M11/70D06M13/144D06M13/152D06M15/37D06M101/30
Inventor 王海江石森昊梁石王叔超
Owner CHENGDU XINCHEN NEW MATERIAL TECH CO LTD
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