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A method of applying photocuring technology to electrospinning

An electrospinning, photocuring technology, applied in textiles and papermaking, conjugated synthetic polymer rayon, fabric surface trimming, etc., can solve problems such as poor mechanical properties and poor cohesion between fibers

Active Publication Date: 2020-12-11
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the electrospun nanofiber membrane has poor mechanical properties due to its irregular accumulation and poor cohesion between fibers, thus limiting its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, photocuring technology is applied to the method of electrospinning, and the steps are as follows:

[0022] (1) Dissolve polyvinylidene fluoride in N,N-dimethylformamide, stir and dissolve to obtain solution A;

[0023] (2) Dissolve the prepolymer, active substance and photoinitiator in N,N-dimethylformamide, stir and dissolve to obtain solution B;

[0024] (3) Stir the solution B, slowly add the solution A to the solution B dropwise, and continue to stir to make a spinning solution;

[0025] The mass fraction of PVDF in the spinning solution is 10%, the prepolymer mass fraction is 10%, the active substance mass fraction is 2.5%, and the photoinitiator mass fraction is 0.4%;

[0026] (4) Spin the spinning solution through an electrospinning machine, and use aluminum foil as a receiving plate to collect fibers (the diameter of the electrospun fiber is 50-1000nm) to obtain a nanofiber film (thickness is 5μm-1mm);

[0027] (5) Cold-press the obtained n...

Embodiment 2

[0030] According to the method of Example 1, the mass fraction of PVDF in the spinning solution is controlled to be 10%, the prepolymer mass fraction is 15%, the active substance mass fraction is 3.8%, and the photoinitiator mass fraction is 0.6%. The electrospinning nanofiber membrane is obtained by electrospinning, the nanofiber membrane is subjected to cold pressing treatment by a cold press, and then the nanofiber membrane is subjected to UV curing and crosslinking by a light curing machine. The tensile strength of the prepared nanofibrous membrane is 35.8MPa.

Embodiment 3

[0032] According to the method of Example 1, the concentration of PVDF in the spinning solution is controlled to be 10%, the prepolymer is 20%, the active substance is 5%, and the photoinitiator is 1%. The electrospun nanofiber membrane is obtained by electrospinning, the nanofiber membrane is cold-pressed by a cold press, and then the nanofiber membrane is UV-cured and cross-linked by a light curing machine. The tensile strength of the prepared nanofiber membrane is It is 20.9 MPa.

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PUM

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Abstract

The invention discloses a method for applying a photocuring technology in electrostatic spinning. According to the electrostatic spinning method, an electrostatic spinning liquid is a mixed spinning liquid and comprises a polymer, a prepolymer, an active matter and a photoinitiator; after the mixed liquid is subjected to electrostatic spinning to form nano-fiber film, cold pressing is performed onthe nano-fiber film, then through UV photocuring crosslinking, the simple, convenient, fast, efficient and economical method applied in electrostatic spinning fiber film crosslinking curing for increasing mechanical strength is obtained, and the problem of nano-fiber film strength is solved; the problems that fiber curing needs heating, the consumed time is much, and the porosity is low are solved, and the nano-fiber film have the characteristics of two high-molecular polymers at the same time, thereby obtaining the electrostatic spinning fiber film with excellent performance.

Description

technical field [0001] The invention relates to a technical method for applying photocuring technology to electrospinning, and the obtained electrospun nanofiber membrane is cross-linked and cured by photocuring technology. Background technique [0002] Electrospinning technology is a mature and direct nanofiber preparation method. It uses high-voltage electrostatic action to form a jet of polymer solution or melt and further stretches and solidifies it in an electric field to obtain continuous micro-nano fibers. It has the technical characteristics of simple manufacturing process, low cost, and easy combination with functional finishing, and has been widely used in the fields of filter materials, photochemical sensors, medical and health materials, and self-cleaning materials. Although electrospun membranes have the advantages of small pore size, high porosity, and controllable packing density, most of the nanofibers in the fiber membrane are randomly stacked, and the cohes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4382D04H1/4358D04H1/4318D06C15/00D01F8/10D01F8/16
CPCD01F8/10D01F8/16D04H1/4318D04H1/4358D04H1/4382D04H1/728D06C15/00
Inventor 王芳芳何建新邵伟力李克兢楚艳艳刘凡王琳琳张景李方陶雪姣李梦营翁凯
Owner ZHONGYUAN ENGINEERING COLLEGE
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