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Method for improving carbon fiber felt needling efficiency

A technology of carbon fiber felt and carbon fiber, which is applied in the field of improving the needle punching efficiency of carbon fiber felt, can solve the problems of increased strength between carbon fiber oxygen-enriched wire needle felt layers, low fiber bundle formation efficiency, and small carbon fiber bundle friction, etc., to achieve improved needle punching Stabbing efficiency, increased interlayer strength, and enhanced riveting effect

Inactive Publication Date: 2018-01-09
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that in the process of forming carbon fiber oxygen-enriched silk needle felt by needle punching, due to the smooth surface of carbon fiber, when the needle barbs to form fiber bundles, some carbon fibers have low friction coefficient, resulting in low fiber bundle formation efficiency, resulting in needle punching The efficiency of achieving compactness is low; and due to the low friction of carbon fiber bundles, it is unfavorable for the increase in interlayer strength of carbon fiber oxygen-enriched wire needle felt

Method used

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  • Method for improving carbon fiber felt needling efficiency

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] After the carbon fiber has been opened, carded and laid, the carbon fiber web passes through the upper surface of the acupuncture table at a conveying speed of 10m / min, and the fluffy carbon fiber web is subjected to negative pressure adsorption under the condition of a negative pressure of 0.1MPa generated by a vacuum pump. , the adsorbed carbon fiber mesh shrinks in the direction of negative pressure operation, and the needles on the upper needle punching board above the needle punching table needle the adsorbed carbon fiber mesh at a frequency of 1000 times / min, and the density of the needles on the upper needle punching board is 2000 pieces / m. The carbon fiber felt after negative pressure needle punching was cut and weighed.

Embodiment 2

[0010] When the carbon fiber web after the carbon fiber has been opened, carded and laid passes through the upper surface of the needle punching table at a conveying speed of 15m / min, under the condition that the negative pressure generated by the centrifugal fan is 0.1MPa, negative pressure is applied to the fluffy carbon fiber web. Adsorption, the carbon fiber mesh after adsorption shrinks in the direction of negative pressure operation, and the needles on the upper needle punching board above the needle punching table perform needle punching on the adsorbed carbon fiber mesh at a frequency of 1200 times / min, and the density of the needles on the upper needle punching board is 2500 Pieces / m. The carbon fiber felt after negative pressure needle punching was cut and weighed.

Embodiment 3

[0012] After the carbon fiber has been opened, carded and laid, the carbon fiber web passes through the upper surface of the acupuncture table at a conveying speed of 20m / min, and the fluffy carbon fiber web is subjected to negative pressure adsorption under the condition of a negative pressure of 0.1MPa generated by a vacuum pump. , the adsorbed carbon fiber mesh shrinks in the direction of negative pressure operation, and the needles on the upper needle punching board above the needle punching table perform acupuncture on the adsorbed carbon fiber mesh at a frequency of 1500 times / min, and the needle density of the upper needle punching board is 3000 pieces / m. The carbon fiber felt after negative pressure needle punching was cut and weighed.

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Abstract

The invention relates to a method for improving the carbon fiber felt needling efficiency, and belongs to the technical field of textile processing. The method has the advantages that negative-pressure adsorption is carried out on fluffy carbon fiber nets under negative-pressure conditions in carbon fiber felt needling technologies when the carbon fiber nets which are already subjected to openingcarding and net laying are transmitted through the upper surfaces of needling tables, the adsorbed carbon fiber nets can be contracted towards negative-pressure running directions, and the contractedcarbon fiber nets are needled by needles of upper needling plates positioned above the needling tables while the carbon fiber nets are contracted; the fluffy carbon fiber nets are adsorbed and contracted under the negative pressures, accordingly, the carbon fiber nets can be densely woven, the needling frequencies can be reduced, and the carbon fiber felt needling efficiency can be improved; the problem of low carbon fiber net needling efficiency due to smooth surfaces of carbon fibers can be solved under the negative-pressure adsorption effects of the negative pressures on carbon fiber bundles, accordingly, carbon fiber felt needling effects can be enhanced, the quality of finished products can be improved, and the production cost can be reduced.

Description

technical field [0001] The invention relates to a method for improving the needling efficiency of carbon fiber felt, which belongs to the technical field of textile processing. Background technique [0002] Carbon fiber felt has high axial strength and modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidizing environment, good fatigue resistance, acid and alkali resistance, high temperature resistance, non-combustibility, oxidation resistance, and sound insulation. Good X-ray permeability, good electrical and thermal conductivity, good electromagnetic shielding, etc. Carbon fiber felt has been widely used in various fields of military and civilian industries. From civilian industries such as aerospace, aviation, automobiles, electronics, machinery, chemicals, and textiles to sports equipment and leisure products. Carbon fiber reinforced composite materials can be used in military fields such as aircraft manufacturing, ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/46
Inventor 曹根阳潘恒刘欣夏治刚徐卫林
Owner WUHAN TEXTILE UNIV
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