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An electrostatic spinning tunnel atmosphere control device and its use method

An electrospinning and control device technology, applied in textile and papermaking, filament/thread forming, fiber processing, etc., can solve the problems of unstable temperature and humidity, single type of environmental atmosphere, large fluctuation of solvent content, etc. Simple and easy to implement, convenient for fiber morphology, and the effect of controlling fiber fineness and distribution

Active Publication Date: 2021-08-31
DONGHUA UNIV +1
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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 an electrospinning channel atmosphere control device and its use method, which solves the problem of large fluctuations in the solvent content in the spinning space in the current batch electrospinning process, the solvent escapes unorganized, and the environmental atmosphere is single. Unstable temperature and humidity, etc., realize the environmental regulation of electrospinning, especially large-scale electrospinning, and then realize the effective control of the size and fiber diameter distribution of submicron fibers and nanofibers and the shape design of electrospun fibers

Method used

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  • An electrostatic spinning tunnel atmosphere control device and its use method
  • An electrostatic spinning tunnel atmosphere control device and its use method
  • An electrostatic spinning tunnel atmosphere control device and its use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Electrostatic spinning is used below. The polymer spinning liquid is formulated with a polyacrylonitrile (PAN) and N-N dimethylformamide (DMF). The mass fraction of the high polymer solution is 10%. The electrospinning nozzle 1 is mounted in the center of the electrospinning bodies; the horizontal and vertical angles of the two sets of gas stream input heads 12, 13 and a set of airflow output heads 14 adjusted the jet stabilization section of the ranging section of the jet stabilization section are related to the tube. The cylindrical surface of the body is 45 degrees, and the cylindrical surface of the cylinder cylindrical surface is 45 degrees, which is related to the horizontal direction of the cylindrical cylindrical surface; 40 ° C, 40% RH, 40% RH, air gas after adjusting the temperature. The airflow input head 12, 13 is connected, and the gas flow is set to 30 L / min and 25L / min; open the vacuum pump, set the stabilized section of the rampage body flow output head ...

Embodiment 2

[0048] The present embodiment is similar to that of Example 1, and the difference is that the mass fraction of the high polymer solution is 12%; the air after the temperature of the airflow input head 12, 13 is 30 ° C, 40% RH, gas The flow is set to 40L / min and 30L / min; the stable segment ranheit stream output head 14 gas output flow rate is 70 l / min; the temperature of the temperature-conditioned moisturizing and humidity connected to the airflow input head 9, 11 is 30 ° C, 25%. RH, gas flow is set to 90 l / min and 80L / min; unstable segment ramp body flow output head 8, 10 gas output flow is set to 92L / min and 81L / min, respectively.

Embodiment 3

[0050] The present embodiment is similar to that of Example 1, and the difference is that the mass fraction of the high polymer solution is 14%; the air after the temperature of the airflow input head 12, 13 is 45 ° C, 40% RH, gas The flow is set to 40L / min and 30L / min; the stabilized section of the rancurious body flow output head 14 gas output flow is set to 70L / min; the air after the temperature of the temperature input head 9, 11 is 45 ° C, 25 % RH, gas flow is set to 100 L / min and 90L / min; unstable segment ramp body stream output head 8, 10 gas output flow is set to 103L / min and 91L / min, respectively.

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Abstract

The invention relates to an electrostatic spinning tunnel atmosphere control device and a method for using the same. The electrostatic spinning tunnel atmosphere control device includes a tunnel body and multiple sets of airflow input and output heads. The corridor body is divided into the corridor body in the stable jet flow section and the tunnel body in the unstable jet flow section. Different airflow transportation methods are adopted for the two sections of the tunnel body. The present invention adopts multiple sets of air flow input and output heads, so that various component gases with controllable temperature and humidity move in the tunnel at a certain flow rate and direction, so as to realize the stable jet temperature and humidity environment in the tunnel body of the jet stabilization section, and stabilize the jet flow temperature and humidity environment in the jet flow stabilization section. Auxiliary jet stretching and refinement in the tunnel body. This technology is simple and easy to implement, which improves the controllability of the electrospinning process, especially the multi-jet industrialized electrospinning, facilitates the design of fiber morphology, and controls the fiber fineness and distribution.

Description

Technical field [0001] The present invention is in the nanofiber textile machinery and technology, and particularly relates to apparatus and methods of using an electrostatic spinning shaft has a controlled atmosphere. Background technique [0002] When the fiber diameter of the polymer is reduced to sub-micron scale from micron-scale or nano-scale, there will be a series of surprising properties. The very large surface area volume ratio, the volume of a specific surface area nanofiber is substantially 1000 times microfibers; can be flexibly surface functionalization; compared to other known forms of materials exhibit superior mechanical properties and effects, such as surface and the interface effect, small size effect, the quantum size effect and quantum tunnel effect and stiffness, tensile strength and the like. These outstanding properties make nanofibers become the material of choice for many important applications, the nanofiber material is great potential for development i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00
Inventor 覃小红熊健王荣武
Owner DONGHUA UNIV