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Method for preparing nano-melt-blown non-woven fabrics by electrospinning

A technology of melt-blown non-woven fabric and electrospinning method, which is applied in the direction of non-woven fabrics, textiles and papermaking, and can solve the problems that ultra-high modulus polyethylene and polypropylene nano-melt-blown non-woven fabrics cannot be prepared, and achieve It is convenient for industrial application, the operation process is simple, and the effect of increasing electrostatic force

Active Publication Date: 2017-10-10
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the technical difficulties that ultra-high modulus polyethylene and polypropylene nano-melt-blown non-woven fabrics cannot be prepared in the prior art. Assembling and developing the preparation method of ultra-high modulus polyethylene and polypropylene nano-melt-blown non-woven fabrics by electrospinning to meet the social needs of industrialized nanofibers

Method used

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  • Method for preparing nano-melt-blown non-woven fabrics by electrospinning

Examples

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Effect test

Embodiment 1

[0021] like figure 1 As shown, the method for preparing nano-melt-blown non-woven fabrics by electrospinning in this example includes the following steps: (1) Raw material component A: a mixture of white oil and ultra-high modulus polyethylene and raw material component B: Polypropylene for melt blowing with a melt index of 405g / 10min is fed from the two screws of the three-screw extruder respectively, wherein the weight ratio of white oil to ultra-high modulus polyethylene is 95:5; (2) the In the above step (1), component A and component B are introduced into the micro-layer co-extrusion device under the action of the three-screw extruder, and the laminated material with a layer number of 35 is extruded through the micro-layer co-extrusion device; (3) The laminated material prepared in the above step (2) enters a clothes hanger die head provided with a slit outlet, and the laminated material is extruded into a melt film with 35 layers and a thickness of 50 μm; (4) the melt U...

Embodiment 2

[0023] like figure 1 As shown, the method for preparing nano-melt-blown non-woven fabrics by electrospinning in this embodiment includes the following steps: (1) mixing raw material component A: a mixture of white oil and ultra-high modulus polyethylene and Raw material component B: Polypropylene for melt blowing with a melt index of 410g / 10min is fed from the two screws of the twin-screw extruder respectively, wherein the weight ratio of white oil to ultra-high modulus polyethylene is 85:15; (2) Import component A and component B in the step (1) into the micro-layer co-extrusion device under the action of the twin-screw extruder, and extrude a laminated material with 200 layers through the micro-layer co-extrusion device (3) The laminated material obtained in the step (2) enters a clothes hanger die with two slit outlets at equidistant intervals, and extrudes the laminated material into a melt with 200 layers and a thickness of 100 μm (4) Under the action of the hot air flow...

Embodiment 3

[0025] like figure 1 As shown, the method for preparing nano-melt-blown non-woven fabrics by electrospinning in this embodiment includes the following steps: (1) mixing raw material component A: a mixture of white oil and ultra-high modulus polyethylene and Raw material component B: Polypropylene for melt blowing with a melt index of 430g / 10min is fed from the two screws of the twin-screw extruder respectively, wherein the weight ratio of white oil to ultra-high modulus polyethylene is 80:10; (2) Import component A and component B in the step (1) into the micro-layer co-extrusion device under the action of the twin-screw extruder, and extrude a laminated material with 256 layers through the micro-layer co-extrusion device (3) The laminated material obtained in the step (2) enters a clothes hanger die with two slit outlets at equidistant intervals, and the laminated material is extruded into a melt with 256 layers and a thickness of 500 μm (4) Under the action of the hot air f...

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Abstract

The invention discloses a method for preparing nano-melt-blown non-woven fabrics by electrospinning, which includes the following steps: (1) feeding raw material component A and component B from two screws of a screw extruder; ( 2) Import component A and component B in the step (1) into the micro-layer co-extrusion device under the action of the screw extruder; (3) The laminated material prepared in the step (2) enters the hanger die (4) Under the synergistic effect of the hot air flow of the drafting system and the electrostatic field, the melt film gradually becomes thinner until it is torn into fibers; (5) The fibers described in step (4) are electrostatically received The web-forming system receives and makes ultra-high modulus polyethylene and polypropylene nano-melt-blown non-woven fabrics. The invention adopts the synergistic effect of the hot air flow and the electrostatic field in the drafting system of the melt film to increase the effect of the electrostatic force, which is more conducive to the formation of microfibers, and the distribution of the microfibers under the action of the electrostatic field can be controlled by adjusting the form of the electrostatic field , it is easier to achieve microfibers with specific structures and effects.

Description

technical field [0001] The invention belongs to the technical field of nanometer nonwoven material preparation, and in particular relates to a method for preparing nanometer melt-blown nonwoven fabric by electrospinning. Background technique [0002] Nanotechnology is a research hotspot in the field of scientific research today. The preparation of nanofibers has always been the focus of many scientists. Among them, electrospinning has been confirmed by relatively systematic theoretical research and experiments in the past 10 years. Electrospinning technology has become an important method for preparing ultrafine fibers and nanofibers. However, this technology has extremely low output, single fiber structure, and can not achieve consistent fiber arrangement, most of which are disorderly and random. Hard to reproduce. [0003] Micro-layer co-extrusion technology has been developed for decades, but it has only been popularized and applied locally, and more are in the laborato...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4291D04H1/728D04H1/732
Inventor 张迎晨吴红艳
Owner ZHONGYUAN ENGINEERING COLLEGE
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