A device and method for electrospinning using melt-blown ultrafine fibers

An ultra-fine fiber and electrospinning technology, applied in the field of fiber manufacturing, can solve problems such as antibacterial, limited heat insulation, limited increase in yarn specific surface area, unevenness, etc., achieve less hairiness and neps impurities, and filter Good adsorption efficiency and improved fiber strength

Active Publication Date: 2019-03-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low strength and brittleness of the melt-blown superfine fiber, if it passes through the rubbing roller of the rubbing mechanism before twisting, it will simply cover the melt-blown superfine fiber with weak frictional cohesion on the surface of the filament or yarn. The fibers are easily damaged; and although there are melt-blown microfibers on the surface of the yarn, since only the outer layer is melt-blown microfibers, the improvement of the specific surface area of ​​the final yarn is limited, antibacterial, heat insulation, sound absorption The effects of functions such as filtration and adsorption are also limited; moreover, the melt-blown ultrafine fiber is a short fiber, and the yarn formed by wrapping it on the surface of the filament or yarn and twisting it has many hairiness and unevenness.

Method used

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  • A device and method for electrospinning using melt-blown ultrafine fibers
  • A device and method for electrospinning using melt-blown ultrafine fibers
  • A device and method for electrospinning using melt-blown ultrafine fibers

Examples

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Effect test

Embodiment 1

[0066] A method of electrospinning utilizing melt-blown microfibers, comprising the following steps:

[0067] (1) Preparation of melt-blown ultrafine fibers: Add PP pellets to the hopper of the melt-blown device, melt through the screw extruder, and spray from the spinneret after the metering pump is quantified. The temperatures in the four zones of the screw extruder are respectively 260°C, 260°C, 270°C, 270°C, the sprayed melt-blown ultra-fine fibers are first drawn and thinned rapidly under the hot air on both sides. The hot air temperature is 220°C, the hot air pressure is 0.5MPa, and the melt-blown speed is 10m / min. After the fiber is drawn by hot air, it is cooled in the cold air box. The temperature of the cooling air is 8°C, and the flow rate of the cooling air is 15000m 3 / h, the cooling wind pressure is 1500Pa, and the wind speed is 2m / s. After the melt-blown ultrafine fibers are cooled, they are bundled by a curtain collection device or a clustering device. The ave...

Embodiment 2

[0072] A method of electrospinning utilizing melt-blown microfibers, comprising the following steps:

[0073] (1) Preparation of melt-blown ultrafine fibers: first put the PET in an oven and bake at 120°C for 10-12 hours, then put the PET pellets into the hopper of the melt-blown device, melt them through the screw extruder, and the metering pump quantifies them from the spray Wire plate spinning, the temperature of the four zones of the screw extruder is 270°C, 270°C, 280°C, and 280°C respectively. The melt-blown ultra-fine fibers that are sprayed out are first drawn and thinned quickly under the hot air on both sides. The hot air temperature is 220° C., the hot air pressure is 0.5 MPa, and the melt blowing speed is 100 m / min. After the fiber is drawn by hot air, it is cooled in the cold air box. The temperature of the cooling air is 8°C, and the flow rate of the cooling air is 15000m 3 / h, the cooling wind pressure is 1500Pa, and the wind speed is 2m / s. After the melt-blow...

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Abstract

The invention relates to a device and method for performing electrostatic spinning by means of melt-blown ultrafine fiber. The device comprises a melt-blowing device, a cooling bundling device, an electret processing device and an electrostatic spinning device. The melt-blowing device is used for preparing melt-blown ultrafine fiber and conveying the melt-blown ultrafine fiber to the cooling bundling device; the cooling bundling device is arranged below the melt-blowing device and used for performing cooling and bundling on the melt-blown ultrafine fiber blown by the melt-blowing device; the electret processing device is used for performing electret processing on the melt-blown ultrafine fiber and conveying the processed melt-blown ultrafine fiber to the electrostatic spinning device; the electrostatic spinning device is used for manufacturing the melt-blown ultrafine fiber into ultrafine fiber yarn by means of the electrostatic spinning method. The ultrafine fiber yarn deviation obtained through electrostatic spinning is uniform, little yarn hairiness and few nep impurities exist, and the quite high specific surface area and good thermal insulation and sound absorption effects are achieved; in addition, due to melt-blown ultrafine fiber is subjected to electret processing, the filtering adsorption efficiency of the yarn is quite high.

Description

technical field [0001] The invention relates to the field of fiber manufacturing, in particular to a device and method for electrostatic spinning using melt-blown ultrafine fibers. Background technique [0002] Melt-blown microfiber is a thermoplastic material that is melted under the blowing of high-speed hot air and stretched to form a melt-blown microfiber. However, because of its ultrafineness, its strength is very low and it cannot be used alone. This greatly limits the scope of use of melt-blown microfibers. The usual melt-blown device is to directly lay the net to form a melt-blown cloth after the melt-blown ultrafine fibers are sprayed out, and cannot collect single fibers or fiber bundles, so the properties of the fiber bundles cannot be utilized. Meltblown ultrafine fiber bundles are a collection of countless meltblown ultrafine fibers, so they have a very large specific surface area, and then have a very good filtration and adsorption effect, and can also make up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/092
CPCD01D5/092D04H1/4382D04H1/728
Inventor 邹汉涛王冰左丹英易长海张荣波周阳徐杰
Owner WUHAN TEXTILE UNIV
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