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Surface bionic modification method and application of high-performance polyimide fiber

A technology of polyimide fiber and modification method, which is applied in the direction of fiber treatment, fiber type, textile and papermaking, etc., to achieve the effect of mild reaction conditions, convenient operation and improved bonding strength

Active Publication Date: 2018-09-04
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polydopamine has good biocompatibility and adhesion properties, and has many applications in the biomedical field, but it is rarely involved in the research of high-performance fiber surface modification and composite materials.

Method used

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  • Surface bionic modification method and application of high-performance polyimide fiber
  • Surface bionic modification method and application of high-performance polyimide fiber
  • Surface bionic modification method and application of high-performance polyimide fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The polyimide fiber is placed in a dopamine hydrochloride solution with a concentration of 2.0g / L, soaked for 24 hours, the pH of the solution is 8, and the mass ratio of the polyimide fiber to the solution is 1:6, and then water Ultrasonic-assisted washing was performed, followed by vacuum drying at 80°C.

Embodiment 2

[0041] Put the polyimide fiber in the dopamine hydrochloride solution with a concentration of 0.5g / L, soak for 15min, the pH of the solution is 8, and the mass ratio of the polyimide fiber to the solution is 1:10, then water Ultrasonic-assisted washing was performed, followed by vacuum drying at 60 °C.

Embodiment 3

[0043] The polyimide fiber is placed in the dopamine hydrochloride solution with a concentration of 1.0g / L, the soaking time is 12h, the pH value of the solution is 9, the mass ratio of the polyimide fiber to the solution is 1:8, and then water Ultrasonic-assisted washing was performed, followed by vacuum drying at 100°C.

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Abstract

The invention provides a surface bionic modification method and application of high-performance polyimide fiber, and belongs to the technical field of high-performance fiber surface modification. Thesurface bionic modification method comprises the steps of preparation of a polydopamine solution, conditioning of pH of a suffering solution, determination of a treatment condition and way and washingand drying treatment ways of treated fiber. The surface bionic modification method adopts dopamine to modify the fiber surface, the polymerization condition is simple, the environment is mild, the reaction process is easy and convenient to operate, and the repeatability is high. The obtained polyimide fiber wrapped with polydopamine retains the excellent mechanical property, has the high surfacepolarity and surface energy, and can be effectively combined with resin and functional groups to prepare high-performance dopamine modifying polyimide fiber reinforced composite materials and functional materials.

Description

technical field [0001] The invention belongs to the technical field of high-performance fiber surface modification, and in particular relates to a bionic modification method and application of a high-performance polyimide fiber surface. Background technique [0002] Polyimide fiber (polyimide fiber, referred to as PI fiber) is an organic synthetic high-performance fiber, and the polymer chain contains imide groups. Polyimide fiber has high strength and high modulus, low dielectric constant and dielectric loss, low thermal expansion coefficient, corrosion resistance, radiation resistance, high and low temperature resistance, good dimensional stability and electrical insulation, excellent creep resistance Performance, has been fully applied in aerospace, electronic and electrical fields. [0003] At present, high-performance fibers widely used in composite material reinforcement include aramid fiber (PPTA), polyparaphenylene benzobisoxazole fiber (PBO) and polyimide fiber (PI...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37C08J5/06D06M101/30
CPCC08J5/06C08J2479/08D06M15/37D06M2101/30
Inventor 武德珍柯颖牛鸿庆张梦颖
Owner BEIJING UNIV OF CHEM TECH
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