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Non-woven fabric and carbon fiber non-woven fabric
Inactive Publication Date: 2016-09-29
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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[0013]According to another aspect of the present invention, there is provided a carbon fiber non-woven fabric which can be obtained by firing the non-woven fabric.
[0014]According to some aspects of the present invention, it may be possib
Problems solved by technology
However, when the particles are exposed for a long time, the particles are easily removed.
Accordi
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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example 1
[0093](1) Preparation of First Dispersion
[0094]PAN was dissolved in DMAc to prepare a polymer solution (concentration of 5% by mass to 10% by mass).
[0095]The polymer solution and slurry (second dispersion, concentration of copper oxide particles of 15% by mass) containing the copper oxide particles (average particle diameter Dp:20 nm) were mixed with each other so that a mass ratio between PAN and the copper oxide particles is 1.3:0.15, and accordingly, a first dispersion containing PAN and the copper oxide particles was prepared.
[0096](2) Electrospinning
[0097]By the manufacturing system shown in FIG. 3, the nanofibers were laminated on the main surface by the electrospinning using the first dispersion obtained in (1) as the raw material solution under the following conditions, and a non-woven fabric was manufactured.
[0098]Electrospinning conditions:
[0099]Application voltage: 60 kV
[0100]Solution discharging pressure: 25 kPa
[0101]Temperature: 26° C.
[0102]Humidity: 37% RH
[0103]In the ...
example 2
[0105]The non-woven fabric of nanofibers was manufactured in the same manner as in Example 1, except for using PI instead of PAN and changing the mass ratio between PI and the copper oxide particles to 2:0.15, and the evaluation was performed.
[0106]The thickness of the obtained non-woven fabric was 20 μm, the mass per unit area was 5 g / m2, the average fiber diameter Df of the nanofibers was 440 nm, the ratio Df / Dp was 22, and a relationship of N1>N2 was satisfied.
example 3
[0107]The non-woven fabric obtained in Example 1 was fired under the argon atmosphere at 800° C. for 0.5 hours, and accordingly, a carbon fiber non-woven fabric was manufactured.
[0108]When the state of particles is observed by energy dispersion type X-ray analysis, the copper oxide particles were converted into copper particles.
[0109]The non-woven fabric and the carbon fiber non-woven fabric according to the embodiments of the present invention can be used for various purposes such as medical purpose, sanitary purpose, a storage device, a catalyst sheet, according to the type of the inorganic particles, in addition to a filtering material.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
A non-woven fabric includes nanofibers which contain a polymer and inorganic particles, the nanofibers being formed by an electrospinning method. The inorganic particles contain first particles and second particles, some parts of which are exposed from a surface of the polymer. A volume V1o of a portion of the first particles exposed from the surface of the polymer and a volume V1i of a portion buried in the polymer satisfy a relationship of V1o<V1i, a volume V2o of a portion of the second particles exposed from the surface of the polymer and a volume V2i of a portion buried in the polymer satisfy a relationship of V2o≧V2i and an average number N1 of the first particles and an average number N2 of the second particles per unit length of the nanofibers satisfy a relationship of N1>N2.
Description
CROSS-REFERENCES TO RELATED APPLICATION(S)[0001]This application is based on and claims priority from Japanese Patent Application No. 2015-62765 filed on Mar. 25, 2015, the entire contents of which are incorporated herein by reference.BACKGROUND[0002]1. Field of the Invention[0003]The present invention relates to a non-woven fabric including inorganic particles and nanofibers formed by an electrospinning method, and a carbon fiber non-woven fabric obtained by carbonizing the non-woven fabric.[0004]2. Description of Related Art[0005]A nanofiber non-woven fabric having a fiber diameter of a nanometer (nm) to sub μm order can be manufactured by an electrospinning method using a solution of a polymer or the like. Since the nanofiber non-woven fabric has a large surface area, the nanofiber non-woven fabric is expected to be used for various purposes, in addition to a filter medium. The nanofiber non-woven fabric can be used for various purposes, when more functions can be applied to the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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