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A kind of preparation method of nanofiber film cloth with interpenetrating structure

A technology of nanofiber membrane and interpenetrating structure is applied in the field of preparation of nanofiber membrane cloth. The effect of shortening the process

Active Publication Date: 2022-02-18
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these technical solutions have effectively improved the quality of the nanofiber membrane, the structure of the fiber layer stack has not changed, and the use of physical or chemical bonding will cause many problems such as a decrease in the specific surface area, a decrease in porosity, and poor flexibility of the fiber membrane.

Method used

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  • A kind of preparation method of nanofiber film cloth with interpenetrating structure
  • A kind of preparation method of nanofiber film cloth with interpenetrating structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Under the condition of water bath at 50°C, fully mix 15 parts of polyacrylonitrile and 85 parts of DMF solvent to obtain spinning dope; mix 70 parts of polyurethane acrylate prepolymer, 10 parts of photoinitiator TPO and 20 parts of diluent 2- EHA is fully mixed to obtain a photocurable prepolymer solution; take 2 parts of the photocurable prepolymer solution according to the ratio and mix it with 98 parts of the spinning stock solution to form a photocurable spinning solution and do light-shielding treatment; start the electrostatic centrifugal spinning device, The voltage was set to 4kV, the spinneret speed was 2000rpm, the feed flow rate was 500mL / h, the spinning temperature was 40°C, the relative humidity of the environment was 20%, and the distance between the spinneret and the mesh curtain was 20cm, and electrostatic centrifugal spinning was carried out; The height between the photo module and the net transmission curtain is 1cm, and continuous ultraviolet light is...

Embodiment 2

[0050] At room temperature, fully mix 14 parts of silk fibroin with 86 parts of formic acid solvent to obtain spinning dope; fully mix 85 parts of water-based polyester acrylate prepolymer, 5 parts of photoinitiator HCPK and 10 parts of diluent IBOA , to obtain a photocurable prepolymer solution; take 5 parts of the photocurable prepolymer solution according to the ratio and mix it with 95 parts of spinning stock solution to form a photocurable spinning solution and do light-shielding treatment; start the electrostatic centrifugal spinning device and set the voltage to 8kV, spinneret speed is 3000rpm, feed flow rate is 800mL / h, spinning temperature is 30°C, ambient relative humidity is 30%, spinneret is 18cm away from conveying curtain, and electrostatic centrifugal spinning is carried out; UV irradiation module The distance from the net delivery curtain is 4cm, and the isochronic long-intermittent ultraviolet light is irradiated with an intensity of 15W; the collection device ...

Embodiment 3

[0053] At room temperature, fully mix 10 parts of polylactic acid and 90 parts of chloroform solvent to obtain spinning dope; fully mix 80 parts of epoxy acrylate prepolymer, 8 parts of photoinitiator HMPP and 12 parts of diluent HPA , to obtain a photocurable prepolymer solution; take 8 parts of the photocurable prepolymer solution according to the ratio and mix it with 92 parts of spinning stock solution to form a photocurable spinning solution and do light-shielding treatment; start the electrostatic centrifugal spinning device and set the voltage to 12kV, spinneret speed is 4000rpm, feed flow rate is 1L / h, spinning temperature is 20°C, ambient relative humidity is 40%, spinneret is 16cm away from mesh curtain, and electrostatic centrifugal spinning is carried out; UV irradiation module The height from the net delivery curtain is 8cm, and the continuous ultraviolet light is irradiated with an intensity of 20W; the collection device is started, and the speed of the delivery n...

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Abstract

The invention relates to the technical field of textile processing, and aims to provide a method for preparing a nanofiber membrane cloth with an interpenetrating structure. It includes: adding the photocurable prepolymer solution into the spinning stock solution, stirring evenly to obtain a photocurable spinning solution; injecting the photocurable spinning solution into the spinneret of the electrostatic centrifugal spinning device, performing electrostatic centrifugal spinning, and Part of the fiber leaving the spinneret is irradiated with ultraviolet light above the collection device; it is continuously collected and packaged by a mesh curtain to obtain a nanofiber membrane cloth with an interpenetrating structure. In the present invention, the irradiated fibers can be cured and strengthened without being flattened by static electricity, and fiber fleeces with different angles from the horizontal direction can be formed in the thickness direction of the fiber membrane cloth; It falls down and forms an interlaced, interspersed and entangled structure with the fiber fleece; it changes the structural characteristics of the traditional nanofiber membrane layer stacking, the fiber membrane structure is more stable, and the possibility of interlayer peeling is reduced.

Description

technical field [0001] The invention belongs to the technical field of textile processing, and in particular relates to a preparation method of a nanofiber membrane cloth with an interpenetrating structure. Background technique [0002] Nanofiber membrane has the advantages of high porosity, small pore size and uniform distribution, adjustable fiber fineness, and strong filtration barrier performance. Compared with traditional fiber membranes, nanofiber membranes have the characteristics of large number of functional groups per unit area, good contact with targets, and high utilization efficiency. Ultrasensitive sensors and high-efficiency filtration have great advantages and great application prospects, so they have received extensive attention. However, nanofibrous membranes have encountered great resistance in the commercialization process due to their poor mechanical properties, and have been unable to meet the mechanical requirements of end products. The traditional n...

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): D01D5/00D04H1/728D06M10/00
CPCD01D5/003D06M10/001D04H1/728D01D5/0061D01D5/0069
Inventor 杨斌侯腾李祥龙
Owner ZHEJIANG SCI-TECH UNIV