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Fiber surface treatment method

A treatment method and fiber surface technology, which is applied in fiber treatment, fiber type, textiles and papermaking, etc., can solve the problems of poor bonding performance between fiber and resin matrix, achieve large-scale production, good application prospects, and improve mechanical properties. performance effect

Active Publication Date: 2021-07-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the interface between the fiber and the resin matrix is ​​poor due to the inertness of the fiber surface, and to provide a fiber surface treatment method, which can increase the interface between the fiber and the resin matrix without losing the mechanical properties of the fiber. Combined performance

Method used

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specific Embodiment approach 1

[0023] Specific embodiment one: what this embodiment describes is a kind of fiber surface treatment method, described method comprises the following steps:

[0024] Step 1: Soak the fiber in a solution of 0.1% to 15% small molecule surfactant for 1 to 120 minutes. The small molecule surfactant can form a chemical bond with the inert surface of the fiber to improve the adhesion of the fiber surface to obtain activated fiber 1;

[0025] Step 2: immerse the activated fiber 1 in a polymer solution with a concentration of 1% to 40% for 1 min to 60 min, take it out after ultrasonic treatment, and obtain the activated fiber 2 after the surface is dried;

[0026] Step 3: immerse the activated fiber 2 in a 0.1% to 60% cross-linking agent solution to perform chemical cross-linking, so that the polymer forms a three-dimensional cross-linked network structure on the surface of the fiber to obtain the activated fiber 3;

[0027] Step 4: immerse the activated fiber 3 in a 0.1%-15% resin sol...

specific Embodiment approach 2

[0030] Specific embodiment two: a kind of fiber surface treatment method described in specific embodiment one, in step one, described fiber is PBO fiber, aramid fiber, carbon fiber, polyester fiber, glass fiber, nylon 66, polyphenylene sulfide One of fiber, basalt fiber or ultra-high molecular weight polyethylene fiber.

specific Embodiment approach 3

[0031] Specific embodiment three: a kind of fiber surface treatment method described in specific embodiment one, in step one, described small molecule surfactant is silane coupling agent, oxalyl chloride, adipoyl chloride, butenedioyl chloride, acrylic acid One or more mixtures of diacid chloride, glutaraldehyde or adipaldehyde. These small molecule surfactants can activate the fiber surface, increase the active groups on the fiber surface, and facilitate the compounding of the fiber and the polymer network.

[0032] Specific embodiment four: a fiber surface treatment method described in specific embodiment three, the silane coupling agent is KH-550, KH-560, KH-570, KH-151, KH-171 or KH-792 One or more combinations of . These silane coupling agents can form amine groups on the fiber surface and increase the fiber surface energy.

[0033] Specific embodiment five: a kind of fiber surface treatment method described in specific embodiment one, in step two, described polymer is ...

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Abstract

The invention provides a fiber surface treatment method, and belongs to the field of fiber surface modification. The method comprises the following steps: placing fibers in a micromolecular surfactant for surface activation, dipping the fibers in a polymer dilute solution, and drying surface moisture after ultrasonic treatment; dipping the fibers in a cross-linking agent for chemical cross-linking to form a layer of polymer cross-linked network structure on the surfaces of the fibers; and placing the fibers in a resin solution, filling the resin solution into the polymer cross-linked network structure through solution replacement, and constructing a cross-linked dual-network structure on the surface of the fibers. Compared with the prior art, the method provided by the invention has the following advantages that the tensile strength of a fiber body is improved while the bonding strength of the fiber and the resin matrix is improved, and the method is simple and beneficial to large-scale production and use.

Description

technical field [0001] The invention belongs to the technical field of fiber surface modification, and in particular relates to a fiber surface treatment method. Background technique [0002] Fiber-based resin composite material is an advanced composite material with great application value and application prospect. It is composed of high-performance fiber and polymer resin. It has high strength, high modulus, fatigue resistance, Corrosion resistance, strong designability, easy processing and molding. High-performance composite materials were developed and industrialized in the 1960s, which promoted the development of national defense and aerospace technology. For decades, high-performance fiber composite materials have been continuously developed, and have been rapidly promoted from the aerospace field to protective equipment, sports equipment, transportation, construction, industrial equipment and other fields. In addition, high-performance fibers such as PBO fibers and ...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08L63/00C08L79/04C08L77/10C08L77/00D06M13/513D06M15/333D06M13/123D06M15/55D06M13/192D06M15/03D06M15/41D06M11/82D06M15/59D06M101/30D06M101/36
CPCC08J5/06D06M13/513D06M15/333D06M13/123D06M15/55D06M13/192D06M15/03D06M15/41D06M11/82D06M15/59C08J2363/00C08J2479/04C08J2477/10C08J2377/00D06M2101/30D06M2101/36
Inventor 黄玉东刘梦元黎俊刘丽胡桢
Owner HARBIN INST OF TECH
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