Porous material syringe needle-free static spinning apparatus

A porous material, electrospinning technology, used in textiles and papermaking, filament/thread forming, fiber processing, etc., can solve the problems of difficult control of spinning diameter, spinning sticking, etc. The effect of uniformity of filaments, reducing production costs and expenses

Active Publication Date: 2015-10-21
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spinning produced by this needle-free spinning method w

Method used

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  • Porous material syringe needle-free static spinning apparatus
  • Porous material syringe needle-free static spinning apparatus
  • Porous material syringe needle-free static spinning apparatus

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Mix and stir polyacrylonitrile (PAN) with N,N dimethylformamide (NMP) and ethanol to form an 8wt% PAN solution; then add acetylacetone, stir evenly, add a certain amount of nano silicon powder and continue stirring until Form a suspension, such as Figure 7 As shown, a porous copper foil with a pore size of 75μm and a porosity of 45% is used as the porous medium 2, and it is matched with a 20ml spinning buffer cylinder 1, and the bottom end of the spinning buffer cylinder 1 is 8mm, such as figure 2 As shown, the porous medium 2 is wrapped at the outlet hole 9 at the bottom end of the spinning buffer cylinder 1, and the spinning buffer cylinder 1 is mounted on the fixed copper core clamp 3, and the porous medium on the spinning buffer cylinder 1 is wrapped 2 Tightly contact the inner surface of the 3 holes of the fixed copper core clamp to conduct voltage, and set the spinning head spacing to 15cm. Such as figure 1 As shown, the solution is injected int...

Example Embodiment

[0026] Example 2

[0027] Configure 50wt% PVDF acetone solvent, add 2wt% water to mix into spinning slurry. The size of the bottom end of the liquid outlet is selected as a buffer cylinder of 20mm and the volume of the buffer cylinder is 200ml; powder metallurgy porous nickel is selected as the porous medium 2, with a porosity of 60%, a pore size of 100μm and a thickness of 6mm. Such as image 3 As shown, when assembling, the copper tapered electrode 1-1 is first inserted into the bottom of the spinning buffer cylinder 1, and the top end passes through the spinning buffer cylinder 1 cylinder wall. Such as Figure 4 As shown, the shape of the tapered electrode 1-1 is the same as the shape of the bottom end of the spinning buffer cylinder 1, which serves to connect the spinning solution in the spinning buffer cylinder 1 with the outer clamp. After that, the porous medium 2 is cut into the same shape as the bottom of the spinning buffer cylinder 1 and placed in the liquid outlet ...

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Abstract

The invention relates to a porous material syringe needle-free static spinning apparatus characterized in that a spinning buffering cylinder of a spinning system is cylindrical; the upper and lower ends of the spinning buffering cylinder are conical; a liquid outlet is formed in the lower end of the spinning buffering cylinder; the diameter of the hole is 3 to 20mm; a porous medium sleeve is arranged on the lower end of the spinning buffering cylinder; the spinning buffering cylinder is connected with a power device via a copper core clamp; an outward extraction electrode of a copper core of the copper core clamp is connected with a power supplying system; an aperture formed in the top end of the spinning buffering cylinder is connected with a liquid discharging end of a liquid supplying device via a liquid supplying pipeline; a liquid charging end of the liquid supplying device is connected with a liquid storage case; and a receiving plate faces right under the liquid outlet formed in the lower end of the spinning buffering cylinder. Special spinning assemblies are employed, so spinning quality can be greatly improved and spinning evenness can be guaranteed; and the porous material syringe needle-free static spinning apparatus is characterized by simple technology, easy industrial application and wide application range.

Description

technical field [0001] The invention relates to a needle-free electrostatic spinning device for porous materials, which belongs to the electrostatic spinning technology. Background technique [0002] Electrospinning technology is a way of using high-voltage electrostatic action to make polymer solution or melt droplets point and generate jets. During the flight, the solvent evaporates or the melt solidifies to form nanofibers. It is divided into two spinning methods: needle type and needleless type. In order to improve the spinning efficiency, the usual needle type uses the multi-needle method for spinning, such as the "high-efficiency multi-needle electrospinning spinning device" with application number 200610157106.8. The liquid is pressed into multiple needles at the same time, and spun into filaments under the action of voltage. Needle electrospinning has the advantages of finer fineness and uniform product, but the efficiency of multi-needle spinning is still not high...

Claims

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Application Information

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IPC IPC(8): D01D5/00
Inventor 陈慧明姜涛张斌韩金磊常潇然张克金
Owner CHINA FIRST AUTOMOBILE
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