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Device and method for preparing composite ultrafine fiber bundles by meltblowing and electrospinning

A technology of ultra-fine fiber and electrospinning, which is applied in the field of fiber manufacturing, can solve the problems of limiting the range of use of melt-blown ultra-fine fibers, the inability to collect single fibers or fiber bundles, and the inability to use the properties of fiber bundles, etc., to achieve good sound absorption effect , Filtration and adsorption efficiency is good, the effect of fiber strength improvement

Active Publication Date: 2019-05-10
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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. Greatly limit the range of use of melt-blown microfibers
The usual melt-blown device lays the net directly after the melt-blown superfine fibers are sprayed to form a melt-blown cloth, which cannot collect single fibers or fiber bundles, so the performance of its fiber bundles cannot be utilized

Method used

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  • Device and method for preparing composite ultrafine fiber bundles by meltblowing and electrospinning
  • Device and method for preparing composite ultrafine fiber bundles by meltblowing and electrospinning
  • Device and method for preparing composite ultrafine fiber bundles by meltblowing and electrospinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The method for preparing composite superfine fiber bundles by melt-blowing and electrospinning comprises 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...

Embodiment 2

[0073] The method for preparing composite superfine fiber bundles by melt-blowing and electrospinning comprises the following steps:

[0074] (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 the 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 dev...

Embodiment 3

[0080] The method for preparing composite superfine fiber bundles by melt-blowing and electrospinning comprises the following steps:

[0081] (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...

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Abstract

The invention relates to a device and method using melt-blow and electrostatic spinning to prepare a composite ultrafine fiber bundle. The device comprises a melt-blow device, a cooling bundling device and an electrostatic spinning and electret device. The melt-blow device is used for preparing a melt-blow ultrafine fiber. The cooling bundling device is arranged under the melt-blow device, and is used for cooling and bundling melt-blow ultrafine fibers sprayed by the melt-blow device. The electrostatic spinning and electret device is used for preparing an electrostatic spinning ultrafine fiber, and carrying out compositing and electret processing on electrostatic ultrafine fibers and melt-blow ultrafine fibers to acquire the electret composite fiber bundle. According to the invention, the fiber bundle is composed of melt-blow fibers and electrostatic spinning ultrafine fibers; the fibers are micron and nanometer; the specific surface area is large; the air remaining between the fibers is more; the effects of heat insulation and sound absorption are great; different sizes of particles can be intercepted in filtration adsorption; electret processing is carried out on melt-blow fibers and electrostatic fibers; and without increasing filtration resistance, the filtration adsorption efficiency of fine particles is great.

Description

technical field [0001] The invention relates to the field of fiber manufacturing, in particular to a device and a method for preparing composite superfine fiber bundles by using melt blown and electrospinning. 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...

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周阳韦炜张荣波
Owner WUHAN TEXTILE UNIV
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