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Method for preparing aramid fiber III nanometer coating fiber reinforced composite material

A technology of fiber reinforcement and composite materials, applied in fiber processing, conjugated synthetic polymer artificial filament, filament/wire forming, etc., can solve problems such as poor interface adhesion, and achieve good dimensional stability and good weather resistance And sunlight resistance, the effect of simple equipment

Active Publication Date: 2019-08-13
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing aramid III nano-coated fiber-reinforced composite material, which solves the problem of poor interface adhesion between aramid III fiber and epoxy resin composite material in the prior art

Method used

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  • Method for preparing aramid fiber III nanometer coating fiber reinforced composite material
  • Method for preparing aramid fiber III nanometer coating fiber reinforced composite material
  • Method for preparing aramid fiber III nanometer coating fiber reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing Aramid III nano-coated fiber reinforced composite material is specifically implemented as follows:

[0049] Step 1. Pre-treat the aramid III fiber to remove the spinning oil and other components remaining on the surface during processing. Soak it in absolute ethanol for 20 hours, then place it in an ultrasonic cleaner for 25 minutes, then clean it with deionized water and place it in an oven at 85°C for 5 hours to obtain clean aramid III fibers, and put them in plastic bags for later use;

[0050] Step 2. Place the pretreated aramid III fiber in a plasma surface treatment device for plasma surface treatment, the treatment time is 5min, the discharge power is 52.5W, and the discharge pressure is 1000Pa, such as figure 2 Shown is the electron micrograph of Aramid Ⅲ fiber after treatment under this condition;

[0051] Step 3. Prepare a mixed solution of PAN and N-N dimethylformamide (DMF) to obtain a spinning solution, wherein the mass fraction of PAN is 6...

Embodiment 2

[0056] A method for preparing Aramid III nano-coated fiber reinforced composite material is specifically implemented as follows:

[0057] Step 1. Pre-treat the aramid III fiber to remove the spinning oil and other components remaining on the surface during processing. Soaked in absolute ethanol for 22 hours, then placed in an ultrasonic cleaner for 27 minutes, then cleaned with deionized water, placed in an oven at 85°C and dried for 5 hours to obtain clean Aramid III fibers, and put them in plastic bags for later use;

[0058] Step 2. Place the pretreated aramid III fiber in a plasma surface treatment device for plasma surface treatment. The treatment time is 7min, the discharge power is 62.5W, and the discharge pressure is 1300Pa. image 3 Shown is the electron micrograph of Aramid Ⅲ fiber after treatment under this condition;

[0059] Step 3. Prepare a mixed solution of PAN and N-N dimethylformamide (DMF) to obtain a spinning solution, wherein the mass fraction of PAN is 9% and th...

Embodiment 3

[0064] A method for preparing Aramid III nano-coated fiber reinforced composite material is specifically implemented as follows:

[0065] Step 1. Pre-treat the aramid III fiber to remove the spinning oil and other components remaining on the surface during processing. Soaked in absolute ethanol for 25h, and then placed in an ultrasonic cleaner for 27min, then rinsed with deionized water and placed in a 90℃ oven for 4h to dry to obtain clean Aramid III fiber, which is put into a plastic bag for later use;

[0066] Step 2. Place the pretreated aramid III fiber in a plasma surface treatment device for plasma surface treatment. The treatment time is 9min, the discharge power is 72.5W, and the discharge pressure is 1600Pa, such as Figure 4 Shown is the electron micrograph of Aramid Ⅲ fiber after treatment under this condition;

[0067] Step 3. Prepare a mixed solution of PAN and N-N dimethylformamide (DMF) to obtain a spinning solution, wherein the mass fraction of PAN is 12% and the mas...

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Abstract

The invention discloses a method for preparing an aramid fiber III nanometer coating fiber reinforced composite material. The method comprises the steps of firstly, pretreating aramid fibers III, thenconducting plasma surface treatment on the pretreated aramid fibers III, preparing a mixed solution of PAN and N-N dimethylformamide as a spinning solution, regarding the aramid fibers III subjectedto plasma surface treatment as a core layer, utilizing an electrostatic spinning parallel electrode method for preparing PAN-aramid fiber III nanometer coating fibers, and after the PAN-aramid fiber III nanometer coating fibers are dried through ethanol treatment, curing the dried PAN-aramid fiber III nanometer coating fibers and an epoxy resin matrix to obtain the PAN-aramid fiber III nanometer coating fiber reinforced epoxy resin composite material. By means of the method, the prepared nanometer coating fibers of a skin-core structure prepared by means of the method have porous nanometer effects and material characteristics, and integrate features of a high porosity and a high specific surface area of skin-layer nanometer fibers and excellent mechanical performance of the core-layer aramid fibers, and the problem in the prior art that the interfacial bonding performance of the aramid fibers and an epoxy resin composite material is poor is solved.

Description

Technical field [0001] The invention belongs to the technical field of fiber reinforced composite materials, and relates to a method for preparing aramid III nano-coated fiber reinforced composite materials. Background technique [0002] With the continuous progress of science and technology and the rapid development of social economy, especially the rapid advancement of cutting-edge technology, more and more stringent and higher requirements are put forward on the performance of materials. Traditional single-performance materials are in many aspects It can no longer meet actual needs, and textile materials with ordinary structures can no longer meet the higher requirements of aviation, aerospace, automobiles, construction, and medical appliances. Therefore, in recent decades, a large number of new textile materials with complex structures have appeared, and they have exerted their unique advantages in various fields. [0003] The compounding of materials is a major trend and tren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L77/10C08L33/20C08J5/04D01F8/08D01F8/12D01D5/34
CPCC08J5/046D01F8/08D01F8/12D01D5/34C08J2363/00C08J2477/10C08J2433/20
Inventor 樊威田荟霞王红红于洋杨雪孟雪张涛于希晨
Owner XI'AN POLYTECHNIC UNIVERSITY
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