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Method for producing continuous high-efficiency nano fibre nonwoven fabric and production device thereof

A nanofiber, nonwoven technology, applied in nonwovens, fiber processing, fiber chemical characteristics, etc., can solve the problems of uneven distribution of fibers, low production efficiency, etc., to improve spinning efficiency, improve quality, reduce The effect of electrostatic repulsion

Inactive Publication Date: 2011-04-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a continuous high-efficiency nanofiber nonwoven fabric preparation method and production device to solve the defects of uneven fiber distribution and low production efficiency in the prior art

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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  • Method for producing continuous high-efficiency nano fibre nonwoven fabric and production device thereof
  • Method for producing continuous high-efficiency nano fibre nonwoven fabric and production device thereof
  • Method for producing continuous high-efficiency nano fibre nonwoven fabric and production device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 52.6g of polyvinyl alcohol 1750 and dissolve it in 1000ml of deionized water, add appropriate amount of sodium chloride and citric acid to make a transparent polymer spinning solution 15 with a mass concentration of 5% without precipitation. The metering pump 4 advances the spinning solution 15 to the metal drum 6 at 11 L / h. The length of the metal drum 6 is 50 cm, the outer diameter is 5 cm, the inner diameter is 3.5 cm, and the rotating speed is 2 r / min. The diameter of the capillary 7 on the metal drum 6 is 1.5 cm. mm, such as Figure 4As shown, the distribution pattern of capillary pores 7 is a twill pattern, and the number of pores is 48. The distance between the positive and negative electrodes is 40cm, and the applied voltage is 40KV. According to the above-mentioned implementation steps, the nanofiber nonwoven fabric is prepared, the fiber diameter distribution is between 390-670nm, and the average output is 21g / h.

Embodiment 2

[0039] Weigh 87g of polyvinyl alcohol 1750 and dissolve it in 1000ml of deionized water, add appropriate amount of sodium chloride and citric acid to prepare a transparent polymer spinning solution 15 with a mass concentration of 8% without precipitation. The metering pump 4 advances the spinning solution 15 to the metal drum 6 at 12 L / h. The length of the metal drum 6 is 50 cm, the outer diameter is 5 cm, the inner diameter is 3.5 cm, and the rotating speed is 4 r / min. The diameter of the capillary hole 7 on the metal drum 6 is 1.5 cm. mm, such as image 3 As shown, the distribution pattern of capillary pores 7 is plain pattern, and the number of pores is 69. The distance between the positive and negative electrodes is 30cm, and the applied voltage is 54KV. According to the above implementation steps, the nanofiber nonwoven fabric is prepared, the fiber diameter distribution is between 320-610nm, and the average output is 28g / h.

Embodiment 3

[0041] Dissolve 63.8 g of polyethylene oxide (molecular weight: 1 million) in 1000 ml of deionized water, and stir in water at normal temperature to prepare a transparent polymer spinning solution 15 with a mass concentration of 6% without precipitation. The metering pump 4 advances the spinning solution 15 to the metal drum 6 at 12 L / h. The length of the metal drum 6 is 50 cm, the outer diameter is 5 cm, the inner diameter is 3.5 cm, and the rotating speed is 3 r / min. The diameter of the capillary hole 7 on the metal drum 6 is 1.5 cm. mm, such as Figure 5 As shown, the distribution pattern of capillary pores 7 is a satin pattern, and the number of pores is 32. The distance between the positive and negative electrodes is 30cm, and the applied voltage is 50KV. According to the above implementation steps, the nanofiber nonwoven fabric is prepared, the fiber diameter distribution is between 230-580nm, and the average output is 18g / h.

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Abstract

The invention relates to continuous high efficiency nano spinning solution (15), a nanofiber nonwovens manufacturing method and a manufacturing device which not only has high manufacturing efficiency but form better thickness of the nanofiber nonwovens. The manufacturing device comprises a solution supply system, a solution feeding pipe (8), a connecting mechanism and a metal roller (6); a metal strainer (10) and a fiber receiving web (11) which have the same shaft with the metal roller are sequentially arranged on the outside of the metal roller (6), an unreel roller (12) and a winding roller (13) are arranged on the fiber receiving web (11), and pores (7) are cut on the hollow metal roller (6). The manufacturing method includes the steps: 1) polymer spinning solution (15) is prepared; 2) an electric field is arranged between the metal roller (6) and metal strainer (10); 3) the metal roller (6) is revolved at a certain speed; 4) a measuring pump (4) is led to the metal roller (6) for even internal inputting; 5) the nanofiber is received. The invention is good for the scale manufacturing of static spinning.

Description

technical field [0001] The invention belongs to the field of nanofiber nonwoven fabrics, in particular to a preparation method and production device of nanofiber nonwoven fabrics. Background technique [0002] Electrospinning technology began in the 1930s and is a common method for direct production of nanofibers. The method has short technological process and simple operation, and its products are mostly used in high-tech fields such as high-efficiency filter materials, biomedical materials, and chemical sensors. [0003] The traditional electrospinning method is a single-nozzle type electrospinning device, which has low production efficiency and a yield of about 0.1-1.0g / h, which is far from meeting the requirements of industrial production. In recent years, in order to improve the production efficiency of electrospinning, people have done more research on spinning devices and production methods. US patents (US6616435B2, US6689374B2, US6713011B2, US6743273B2) have design...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/00D01D5/00D01D4/00D01D13/02D01F13/00D04H1/42D04H1/728
CPCD01D5/0061D01D5/18
Inventor 孙亚峰王新厚
Owner DONGHUA UNIV
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