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Preparation method of colored nanofiber membrane with composite structure

A technology of nanofiber membrane and composite structure, applied in separation method, fiber treatment, fiber chemical characteristics, etc., to achieve the effect of excellent storage stability, increase added value, and solve the problem of environmental pollution

Inactive Publication Date: 2020-04-10
上海纷然科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, so far, through the ingenious design of composite structures, the research and reports on endowing nanofiber materials with special functions and applying them to air filter materials and other fields have not covered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]Weigh 0.05g sodium dodecyl sulfonate and dissolve it completely in 27g deionized water as the water phase; dissolve 0.3g C.I. solvent black 3 and 3g polyacrylonitrile (PAN) in 9.5g volatile solvent ethyl acetate In the ester, the dye and PAN were completely dissolved in the solvent by means of a magnetic stirrer to obtain an oil phase. The oil phase was poured into the water phase, and the pre-emulsification was continuously stirred for 1 hour by means of a magnetic stirrer; then, under the condition of ice bath protection, the prepared emulsion was finely emulsified by means of an ultrasonic stirrer with an output power of 855 watts for 3 min. Finally, a rotary evaporator was used to remove the volatile solvent to obtain a C.I. solvent black 3 / polyacrylonitrile composite nano-dispersion. The obtained concentration is 10% (g / g) of the dye / polyacrylonitrile water dispersion liquid, carries out electrospinning under the following parameter conditions, specific parameter is...

Embodiment 2

[0030] Take 0.2g of sodium dodecyl sulfonate and dissolve it completely in 92g of deionized water as the water phase; dissolve 1g of C.I. Solvent Red 26 and 8g of polymethyl methacrylate in 27g of volatile solvent chloroform to obtain oily phase. The oil phase was poured into the water phase, and the pre-emulsification was continuously stirred by a magnetic stirrer for 1 hour; then, the prepared emulsion was finely emulsified by an ultrasonic stirrer with an output power of 665 watts for 5 min under the protection of an ice bath. Finally, a rotary evaporator was used to remove the volatile solvent to obtain a C.I. solvent red 26 / polymethyl methacrylate composite nano-dispersion. The obtained concentration is 8% (g / g) of the dye / polyacrylonitrile water dispersion liquid, carries out electrospinning under the following parameter conditions, specific parameter is: voltage 68KV, receiving distance 20cm, line speed is 0.8m / min , the ambient temperature is 25° C., the relative humi...

Embodiment 3

[0032] Weigh 0.3g sodium dodecyl sulfonate and dissolve it completely in 88g deionized water as the water phase; dissolve 0.5g C.I. solvent blue 45 and 12g polymethyl methacrylate in 28g volatile solvent chloroform , an oily phase was obtained. After pre-emulsification and micro-emulsion ultrasonic treatment under the same conditions as in Example 2, the volatile solvent was removed by a rotary evaporator to obtain a blue composite nano-dispersion. The final red nano colorant obtained in Examples 1 and 2 is the same as the finished product, and can be uniformly dispersed in the water phase. The obtained concentration is 8% (g / g) of the dye / polyacrylonitrile water dispersion liquid, carries out electrospinning under the following parameter conditions, specific parameter is: voltage 65KV, receiving distance 17cm, line speed is 1.5m / min , the ambient temperature is 25° C., the ambient relative humidity is 35%, and the receiving substrate is a 40-mesh gauze, finally obtaining a b...

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Abstract

The invention discloses a preparation method of a colored nanofiber membrane with a composite structure. The preparation method comprises the following specific preparation processes of (1) combiningfine emulsification and electrostatic spinning processes, coating dyes with different chemical structures in a polymer nanoparticle matrix through the high-speed shearing action of fine emulsificationultrasound, removing a volatile solvent under a sealed and pressure-reduced condition, and uniformly dispersing the solvent type dyes in a water phase by virtue of a polymer carrier with uniformly distributed particles; (2) adjusting different parameters of the prepared dye / polymer composite nano dispersion liquid under the action of high-voltage static electricity, and directly obtaining nanofibers with different colors by virtue of an electrostatic spinning method; and (3) receiving the nanofibers with different colors in base material manufacturers with different structures and materials to obtain the uniform colored nanofiber membrane. The colored nanofiber membrane has very wide application space in the application fields of functional masks, air filtering products, screen window products for decoration, even photosensitive sensing and the like in the future.

Description

technical field [0001] The invention relates to a method for preparing colored nanofibers with a composite structure, in particular to a method for preparing colored nanofibers with durable weather resistance by using polymers coated with dyes as raw materials. The prepared nanofibers can be applied in the fields of air filtration, decorative window screens, photosensitive sensing, cosmetics and the like. Background technique [0002] Nanofibers generally refer to fiber materials with fiber diameters on the nanoscale. Due to the small size effect, the nanofibers can be endowed with excellent properties such as large specific surface area and high porosity. It is widely used in industrial, electronic technology and civil air filtration products. Electrospinning, as one of the preparation methods that can directly obtain nanofibers, has also received more and more attention in the industry. However, when preparing nanofibers for air filtration by this method, the systems us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01F1/06D01F6/54B01D39/04B01D46/54B01D53/22B01D67/00B01D69/08
CPCB01D39/04B01D46/543B01D53/228B01D67/0002B01D69/08B01D2239/10B01D2258/06B01D2323/39D01D5/003D01D5/0038D01D5/0084D01F1/06D01F6/54D10B2505/04Y02A50/20
Inventor 郭航
Owner 上海纷然科技有限公司
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