Non-woven cloth production device for curtain solid pin electrode nano fiber

A technology for electrospinning nanofibers and production devices, applied in non-woven fabrics, textiles and papermaking, fiber processing, etc., can solve the problems of drop spinning voltage, thick fiber diameter, clogging, etc. to the effect of the spinning voltage

Inactive Publication Date: 2012-10-03
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production device is specially designed with a solid needle electrode spinneret, which well solves the problem of clogging and dripping in the capillary electrospinning process and the high spinning voltage and thick fiber diameter in the needleless roller spinning process. The problem of realizing the preparation of electrospun nanofibers with high concentration spinning solution

Method used

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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  • Non-woven cloth production device for curtain solid pin electrode nano fiber
  • Non-woven cloth production device for curtain solid pin electrode nano fiber
  • Non-woven cloth production device for curtain solid pin electrode nano fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 A curtain-type solid-needle electrospun nanofiber nonwoven fabric production device shown includes a liquid storage tank 1, a curtain-type solid-needle electrode spinneret 2, a receiving device 3, and a high-voltage electrostatic generator 4. The width of the curtain type solid needle electrode spinneret is 20cm, select as image 3 For the fork-shaped solid needle electrode shown, the length of 22 solid needle electrodes is 1cm, the width of the fork is 1mm, the depth of needle tip immersion is 0.2mm, and the needle density is 1 needle / cm 2 . During work, 30% polyvinyl alcohol / water spinning solution is injected into the liquid storage tank 1 through the liquid inlet 11, and the excess spinning solution flows out through the outlet 12, and the solid needle electrode spinneret 2 is under the action of an external force at a speed of 1m / Rotate at a rotation speed of min, turn on the high-voltage electrostatic generator 4 after the spinneret 2 rotates stab...

Embodiment 2

[0032] like figure 1 A curtain-type solid-needle electrospun nanofiber nonwoven fabric production device shown includes a liquid storage tank 1, a curtain-type solid-needle electrode spinneret 2, a receiving device 3, and a high-voltage electrostatic generator 4. The width of the curtain type solid needle electrode spinneret is 80cm, select as Figure 4 For the cylindrical solid needle electrode shown, the solid needle electrode has 22 needles with a length of 5cm, a needle tip immersion depth of 0.4mm, and a needle density of 16 needles / cm 2 . During work, 35% polyvinylpyrrolidone / ethanol spinning solution is injected into the liquid storage tank 1 through the liquid inlet 11, and the excess spinning solution flows out through the outlet 12, and the solid needle electrode spinneret 2 is under the action of an external force at a speed of 3m / Rotate at a rotation speed of min, and turn on the high-voltage electrostatic generator 4 after the spinneret 2 rotates stably. The po...

Embodiment 3

[0034] like figure 1 A curtain-type solid-needle electrospun nanofiber nonwoven fabric production device shown includes a liquid storage tank 1, a curtain-type solid-needle electrode spinneret 2, a receiving device 3, and a high-voltage electrostatic generator 4. The width of the curtain type solid needle electrode spinneret is 100cm, select as Figure 5 For the conical solid needle electrode shown, the length of 22 solid needle electrodes is 2cm, the depth of needle tip immersion is 0.8mm, and the density of implanted needles is 5 needles / cm 2 . During work, 25% polyurethane / N,N-dimethylformamide spinning solution is injected into the liquid storage tank 1 through the liquid inlet 11, and the excess spinning solution flows out through the outlet 12, and the solid needle electrode spinneret 2 is in the Under the action of external force, rotate at a rotation speed of 2m / min. After the spinneret 2 rotates stably, turn on the high-voltage electrostatic generator 4. The positiv...

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Abstract

The invention discloses a production device for a curtain solid pin electrode nano fiber, which mainly includes a liquid storage tank, a curtain solid pin electrode thread ejector, a receiving device and a high-voltage electrostatic generator, wherein the curtain solid pin electrode thread ejector is characterized by consisting of a metal curtain, a solid pin electrode and a rotating roller; the breadth of the curtain pin electrode thread ejector ranges from 20 to 200cm, and the pin density of the solid pin electrode is 1 to 16/cm2; the solid pin electrode is characterized in that the pin structure is either forked, cylindrical, conical or pyramidal; the solid pin electrode (22) is characterized in that the pin length ranges from 1 to 4cm, the pin tip dipping length ranges from 0.2 to 1mm. The industrial production device is sufficient for the production of the spinning solution electrospun nano fiber with the density amounting to more than 25%, the critical voltage thereof is generally no higher than 25kV, the production efficiency is higher than 50g/min, the diameter of the prepared nano fiber ranges from 50 to 500nm, and the uniform diameter is smaller than 400nm.

Description

technical field [0001] The invention relates to an electrostatic spinning device, in particular to a curtain type solid needle electrospinning nanofiber nonwoven fabric production device. Background technique [0002] In a narrow sense, nanofibers refer to fibers with a diameter less than 100nm. Due to their extremely fine diameter, the specific surface area of ​​the fibers has undergone a qualitative leap, which greatly improves their surface energy, thus endowing them with special small size effects, surface effects, Quantum size effect, macroscopic quantum tunneling effect, etc., all exhibit excellent properties in terms of physical (light, heat, electromagnetic, etc.), chemical and other properties, and will become research hotspots in the 21st century in the future. Nanofiber nonwovens have broad application prospects in environmental protection filter materials, nanocomposite reinforcement materials, tissue engineering scaffolds, drug release carriers, photoelectric de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/02D04H1/728D04H5/08D01D5/00
Inventor 程博闻康卫民赵义侠蔡占军庄旭品夏磊刘雍蒋婷婷
Owner TIANJIN POLYTECHNIC UNIV
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