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Melt-blowing device with double-electrode high-voltage electrostatic spinning

A high-voltage electrostatic, double-electrode technology, applied in textiles and papermaking, filament/thread forming, non-woven fabrics, etc., can solve the problems of high production energy consumption, uneven diameter distribution, low dipolar aging of fiber membranes, etc. Achieve the effect of reducing diameter size and distribution

Pending Publication Date: 2020-11-13
BEIJING UNIV OF CHEM TECH +1
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Problems solved by technology

[0005] Aiming at the problems that the polymer fiber prepared by the melt-blown method has a relatively thick diameter, uneven diameter distribution, high production energy consumption, and low dipolar time efficiency of the fiber film, a double-electrode high-voltage electrospinning melt-blown device is proposed

Method used

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  • Melt-blowing device with double-electrode high-voltage electrostatic spinning
  • Melt-blowing device with double-electrode high-voltage electrostatic spinning
  • Melt-blowing device with double-electrode high-voltage electrostatic spinning

Examples

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Embodiment example

[0026] The filter membrane of sodium chloride aerosol was tested with a particle filtration efficiency tester. After adding high-voltage electrostatic assisted refinement, the filter effect of the fiber filter membrane on particles of different diameters was significantly improved. The test results show that after adding double-electrode high-voltage electrostatics, the average fiber diameter is reduced from 2-5 μm to 1-2 μm (the minimum detection diameter is 628nm); the distribution range of fiber diameter is reduced by as much as two times; the filtration efficiency after electret treatment is increased by 10 %, the filtration efficiency without electret treatment is increased by about 4%; for example, the filtration efficiency of PM0.3 particulate matter has increased from 97% to 99.97%. After calculation, the power loss of the suction wind box and airflow auxiliary equipment is reduced by about 1 kilowatt per hour; the dipolar retention time of the fiber membrane is increas...

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Abstract

The invention discloses a melt-blowing device with double-electrode high-voltage electrostatic spinning. The melt-blowing device mainly comprises a melt-blowing mold head supporting frame, a melt-blowing upper mold head, a melt-blowing lower mold head, a shuttle-type electrode plate, an electrode plate conductor sheet, a supporting frame adjusting net, a bellows adjusting nut, a suction air box and a porous electrode plate, wherein the melt-blowing mold head supporting frame is used for supporting and fixing the melt-blowing upper mold head, the melt-blowing lower mold head and the shuttle-type electrode plate; and the high-voltage electrostatic field force is applied between the melt-blowing upper mold head and the shuttle-type electrode plate, the high-voltage electrostatic field force is applied between the shuttle-type electrode plate and the porous electrode plate, the two times of high-voltage electrostatic field force are used as auxiliary action force to draw and refine fibers,and the diameter size and distribution of polymer fibers are advantageously reduced. Before the fibers are cured, a double-electrode high-voltage electrostatic field polarizes the fibers, electric charges can be remained in a fiber layer for a long time, and the dipolarity aging of the fibers is long; and the application of double electrodes simultaneously solves the problems of large fiber diameter, wide diameter distribution range, high energy consumption and short dipolarity aging.

Description

technical field [0001] The invention relates to a double-electrode high-voltage electrostatic spinning melt blown device, which belongs to the field of spinning equipment. Background technique [0002] Affected by the new type of coronavirus pneumonia, there is a large shortage of disposable masks and N95 masks needed by residents for daily protection. The price of N95 masks was once as high as 80 yuan per piece, while the inner layer of meltblown cloth, which is the core of mask protection, is in short supply. 30,000 yuan / ton suddenly increased to 600,000 to 800,000 yuan / ton, and a large amount of money was injected into the melt blown cloth industry, but the prepared melt blown cloth has poor toughness, many grains, and the filtration efficiency is lower than the national standard. [0003] The spinning processing method is a manufacturing method of polymer micro-nano fibers, mainly including melt blown method, electrospinning method and so on. Different preparation techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/56D04H1/728D01D5/00
CPCD01D5/0061D01D5/0069D01D5/0092D04H1/56D04H1/728
Inventor 安瑛王军杨卫民李好义戴雄飞陈琪琪李习标沈毅丁玉梅
Owner BEIJING UNIV OF CHEM TECH
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