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Aramid fiber surface treatment process

A kind of aramid fiber and surface treatment technology, used in fiber treatment, physical treatment, textiles and papermaking, etc., can solve the problems of low expansion, low thermal conductivity, poor bonding, etc., to improve performance, improve surface bonding strength, and improve surface condition Effect

Inactive Publication Date: 2013-09-25
NANTONG HETAI COMM EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aramid fiber, also known as aromatic polyamide fiber, is a high-performance organic fiber, which has the advantages of high strength and high modulus, high temperature resistance, light specific gravity, impact resistance, fatigue resistance, good chemical stability, low expansion, and low thermal conductivity. It is used as a reinforcing material for composite materials in the aerospace field. However, the surface of aramid fiber is quite inert and has poor bonding with the resin substrate. It is necessary to treat the surface of aramid fiber to improve its bonding performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The aramid fiber surface treatment process comprises the following steps: after the aramid fiber is unwound, the surface of the aramid fiber is cleaned for 0.5 minutes with a cleaning solution in an ultrasonic wave, the power of the ultrasonic generator is 1200W, and the cleaning solution includes silane and Methanol, dissolving silane in methanol to make a solution with a mass concentration of 5%, then adding glacial acetic acid with a mass concentration of 1%, stirring at room temperature for 0.3 hours, after the surface of the aramid fiber is cleaned, enter the oven for drying, The temperature of the oven is controlled at 200°C, the drying time is 0.5 minutes, and the surface treatment is completed.

Embodiment 2

[0017] The surface treatment process of aramid fibers comprises the following steps: after the aramid fibers are unwound, the surface of the aramid fibers is cleaned with a cleaning solution in an ultrasonic wave for 2 minutes, the power of the ultrasonic generator is 1600W, and the cleaning solution includes silane and Ethanol, dissolving silane in ethanol to make a solution with a mass concentration of 10%, then adding glacial acetic acid with a mass concentration of 2%, stirring at room temperature for 1.5 hours, after the aramid fiber surface is cleaned, enter the oven for drying, The temperature of the oven is controlled at 250°C, the drying time is 2 minutes, and the surface treatment is completed.

Embodiment 3

[0019] The surface treatment process of aramid fibers comprises the following steps: after the aramid fibers are unwound, the surface of the aramid fibers is cleaned for 3 minutes with a cleaning solution in an ultrasonic wave, the power of the ultrasonic generator is 2000W, and the cleaning solution includes silane and Methanol, dissolving silane in methanol to prepare a solution with a mass concentration of 15%, and then stirring at room temperature for 2 hours. After the surface of the aramid fiber is cleaned, it is dried in an oven. The temperature of the oven is controlled at 300 ° C. The time is 3 minutes, and the surface treatment is completed.

[0020] The advantages of the present invention are: ultrasonic waves can produce a strong cavitation effect, and the cavitation effect can quickly and fully infiltrate the aramid fiber with the cleaning liquid, improve the surface state of the aramid fiber, and improve the quality of the aramid fiber by cleaning the surface of t...

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PUM

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Abstract

The invention discloses an aramid fiber surface treatment process. The process is characterized in comprising the steps that: aramid fiber is spun; the aramid fiber is subjected to surface cleaning treatment for 0.5-3min by using a cleaning liquid in ultrasonic waves; when aramid fiber surface cleaning is finished, the aramid fiber is bake-dried in a baking oven, such that surface treatment is finished. The method provided by the invention has the advantages that: ultrasonic waves provide an intense cavitation effect, such that the aramid fiber can be sufficiently impregnated by the cleaning liquid, and aramid fiber surface state can be changed. With the surface cleaning treatment of the aramid fiber, bonding strength between the aramid fiber and resin is improved. Also, a solution prepared by dissolving silane in an organic solvent is adopted as the ultrasonic medium, such that a surface adhesion performance is improved under ultrasonic waves.

Description

technical field [0001] The invention relates to an aramid fiber surface treatment process. Background technique [0002] Aramid fiber, also known as aromatic polyamide fiber, is a high-performance organic fiber, which has the advantages of high strength and high modulus, high temperature resistance, light specific gravity, impact resistance, fatigue resistance, good chemical stability, low expansion, and low thermal conductivity. It is used as a reinforcing material for composite materials in the aerospace field. However, the surface of aramid fiber is quite inert and has poor bonding with the resin substrate. It is necessary to treat the surface of aramid fiber to improve its bonding performance. [0003] Therefore, in order to solve the above problems, a new technical solution is provided to meet the demand. Contents of the invention [0004] The purpose of the present invention is to provide a kind of aramid fiber surface treatment process. [0005] The technical sche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/08
Inventor 陆志强仇宝鑫赵荣兵
Owner NANTONG HETAI COMM EQUIP
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