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A device and method for preparing aligned fibers using solution blow spinning technology

A directional arrangement and solution technology, applied in dry spinning, textiles and papermaking, bundling of newly ejected filaments, etc. Simple, safe and uniform fiber distribution

Active Publication Date: 2020-06-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a device and method for preparing oriented fibers by using solution blow spinning technology in order to solve the above-mentioned deficiencies in the prior art. The current preparation method has problems of relatively complex spinning structure, relatively low safety, relatively low degree of arrangement, and relatively small amount of single preparation

Method used

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  • A device and method for preparing aligned fibers using solution blow spinning technology
  • A device and method for preparing aligned fibers using solution blow spinning technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Mix water, acetic acid, and ethanol with a mass ratio of 1:2:6, add tetrabutyl titanate and barium acetate with a molar mass ratio of 1:1, and then add half of the total mass of tetrabutyl titanate and barium acetate The PVP (1300000g / mol) is prepared into the spinning solution that the mass fraction of solute is 10%. The spinning solution is injected into the syringe, the needle is a 30G needle, the advancing speed is 3ml / h, the spinning environment temperature is room temperature, the humidity is 30%, the airflow pressure is 0.5MPa, and the angle between the nozzle and the horizontal centerline of the flat collection net is 15 °, the distance between the nozzle and the left edge of the flat collection net is 30cm, and the negative pressure is 1MPa. Spinning is carried out under this condition. After spinning for 1 hour, oriented solution-blown fibers of corresponding thickness are collected on the covering surface on the right side of the flat collection net. in the ...

Embodiment 2

[0055] In ethanol, add PVP (1300000g / mol) to prepare a spinning solution with a solute mass fraction of 10%. Inject the spinning solution into the syringe, the needle is a 25G needle, the advancing speed is 0.5ml / h, the spinning environment temperature is room temperature, the humidity is 35%, the airflow pressure is 1MPa, and the angle between the nozzle and the horizontal center line of the flat collection net is 0 °, the distance between the nozzle and the left edge of the flat collection net is 15cm, and the negative pressure is 1MPa. Spinning is carried out under this condition. After spinning for 1 hour, oriented solution-blown fibers of corresponding thickness are collected on the covering surface on the right side of the flat collection net. in the same direction.

Embodiment 3

[0057] Mix acetic acid and ethanol with a mass ratio of 1:3, add tetrabutyl titanate and PVP (1,300,000 g / mol) with a mass ratio of 2:1, and prepare a spinning solution with a mass fraction of solute of 15%. The spinning solution is injected into the syringe, the needle is a 30G needle, the advancing speed is 3ml / h, the spinning environment temperature is room temperature, the humidity is 35%, the airflow pressure is 0.5MPa, and the angle between the nozzle and the horizontal center line of the flat collection net is 45° °, the distance between the nozzle and the left edge of the flat collection net is 35cm, and the negative pressure is 1MPa. Spinning is carried out under this condition. After spinning for 1 hour, oriented solution-blown fibers of corresponding thickness are collected on the coating surface on the right side of the flat collection net. in the same direction.

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Abstract

The invention discloses a device and a method for preparing directionally arranged fiber by a solution blow-spinning technology. The device comprises a solution blow-spinning system and a system for collecting fiber directionally arranged by airflow; the solution blow-spinning system comprises a spinning solution, an airflow control system and a blow-spinning device; the blow-spinning device, a spinning solution and the airflow control system are connected; a spinning collection system comprises a paving collection net; the paving collection net is connected with a negative pressure device; and the solution blow-spinning system collects directionally arranged nanometer fiber on the paving collection net by adjusting the angle of the spinning air flow and the paving collection net and by taking high-speed airflow as a directional driving force. The device and the method are relatively simple to operate, have many adjustable parameters and are high in precision; and the fiber obtained through preparation is high in arrangement degree, large in preparation quantity and high in uniformity.

Description

technical field [0001] The invention belongs to the technical field of solution blow spinning, and in particular relates to a device and a method for preparing aligned fibers by using the solution blow spinning technology. Background technique [0002] The morphology of the spun fiber has an important influence on its performance, especially the thermal conductivity and particle conductivity of the oriented fibers in the direction of their arrangement have excellent performance, which is used in sensors, electronic devices, nanocomposites, It is of great significance in the fields of smart textiles and new energy storage. For the alignment of nano-polymer or ceramic fibers, electrospinning methods have been extensively studied. The electrospinning method is often used to prepare oriented fibers by the roller method, which has a good orientation in the initial stage of spinning, but with the increase of spinning time, the degree of orientation decreases seriously. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/04D01D7/00D04H1/732
CPCD01D5/04D01D7/00D04H1/732
Inventor 赵斌张洲杰王琦孙周婷蒋扬昶韩晓刚
Owner XI AN JIAOTONG UNIV
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