Anti-static nonwoven fabric and preparing method thereof

An antistatic and non-woven fabric technology, which is applied in the manufacture of conductive/antistatic filaments, nonwovens, textiles, and papermaking, can solve the problems of poor flexibility of non-woven fabrics and limit the application range of non-woven fabrics, and achieve good results. The effect of flexibility

Inactive Publication Date: 2012-06-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the antistatic blend of conductive filler and polypropylene is melt-blown into non-woven fabrics, the introduction of conductive fillers leads to poor flexibility of non-woven fabrics, which limits the application range of such non-woven fabrics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Carbon black (Ketjen Black EC 600-JD) with a particle diameter of 0.08 μm was dried in an oven at 120 °C for 3 h, and then 97% by mass of polypropylene (T30S, Fushun Petrochemical) and 3% by mass of carbon black were put into the double In the screw, the temperature is 200° C., the rotation speed is 40 r / min, and pelletized to obtain the antistatic blend particles of carbon black and polypropylene. Melt 60% mass fraction of polypropylene particles and 40% mass fraction of antistatic blend particles and extrude them from the inner and outer round holes of the die, respectively, at a temperature of 200°C, and melt-blown to obtain a non-woven fabric with a skin-core structure. After standing at room temperature for 24 hours, test the surface resistivity of the non-woven fabric, and observe whether the non-woven fabric can be broken at room temperature

[0013] Surface resistivity (Ω / sq) Is it broken non-woven fabric 10 7 no

Embodiment 2

[0015] Carbon nanotubes with a particle diameter of 2 μm were dried in an oven at 110° C. for 4 h. Then put 92% mass fraction of polypropylene (T30S, Fushun Petrochemical) and 8% mass fraction of carbon nanotubes into the twin-screw at a temperature of 210°C and a rotation speed of 55r / min, and granulate to obtain the resistance of carbon nanotubes and polypropylene. Electrostatic blend particles. Melt 55% by mass polypropylene particles and 45% by mass of antistatic blend particles and extrude them from the inner and outer round holes of the die respectively, at a temperature of 220°C, and melt-blown to obtain a non-woven fabric with a skin-core structure. After standing at room temperature for 24 hours, test the surface resistivity of the non-woven fabric, and observe whether the non-woven fabric can be broken at room temperature

[0016] Surface resistivity (Ω / sq) Is it broken non-woven fabric 10 6 no

Embodiment 3

[0018] Vapor-phase carbon fibers with a particle diameter of 1.5 μm were dried in an oven at 120 °C for 2.5 h. Then 95% mass fraction of polypropylene (T30S, Fushun Petrochemical) and 5% mass fraction of gas-phase carbon fiber were put into the twin-screw at a temperature of 190 °C and a speed of 35 r / min, and granulated to obtain an antistatic co-polymer of gas-phase carbon fiber and polypropylene. Mixture particles. Melt 50% mass fraction of polypropylene particles and 50% mass fraction of antistatic blend particles and extrude them from the inner and outer round holes of the die respectively, at a temperature of 200°C, and melt blown to obtain a non-woven fabric with a skin-core structure. After standing at room temperature for 24 hours, test the surface resistivity of the non-woven fabric, and observe whether the non-woven fabric can be broken at room temperature

[0019] Surface resistivity (Ω / sq) Is it broken non-woven fabric 10 6 no

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Abstract

The invention discloses an anti-static nonwoven fabric, which is a composite fiber of a skin and core structure. A core layer is made of polypropylene, a skin layer is made of mixture of polypropylene and conductive filling materials, wherein the skin layer takes 40%-80% of the total mass fraction of the composite fiber, and the conductive filling materials take 1.5%-10% of the total mass fraction of the skin layer. The preparation method includes steps: 1) the polypropylene and the conductive filling materials are mixed by a fusion manner so as to obtain the anti-static mixture; 2) polypropylene melt is extruded via a round hole on the inner side of a mold head, the anti-static mixture is extruded via a ring on the outer side of the mold head, so that the composite fiber of the skin and core structure is formed, and the anti-static nonwoven fabric is obtained by means of melt blowing. The anti-static nonwoven fabric has good flexibility while having an anti-static performance.

Description

technical field [0001] The invention relates to an antistatic nonwoven fabric and a preparation method thereof. Background technique [0002] Polypropylene is a kind of non-polar polyolefin polymer material with good spinning performance, but it is easy to generate static electricity after melt-blown into non-woven products. Filling conductive fillers (such as carbon black, gas-phase carbon fibers, carbon nanotubes, etc.) into polypropylene to form a blend can endow polypropylene with antistatic properties. However, after the antistatic blend of conductive filler and polypropylene is melt-blown into non-woven fabrics, the introduction of conductive fillers leads to poor flexibility of non-woven fabrics, which limits the application range of such non-woven fabrics. Polypropylene is used as the core layer of non-woven fabric fibers, and the conductive filler and polypropylene antistatic blend are used as the skin layer of non-woven fabric fibers, and then melt-blown into non-...

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/007D04H3/018D04H3/147D01F1/09
Inventor 沈烈曹清华孟庆荣贾伟灿丁宏亮
Owner ZHEJIANG UNIV
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