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Flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and spinning method thereof

A technology of coaxial electrospinning and fiber compounding, which is applied in fiber processing, textile and papermaking, and filament/thread forming, etc. Uniformity and other issues, to achieve the effect of easy inspection, maintenance and cleaning, low equipment cost, and uniform electric field

Inactive Publication Date: 2014-02-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electric field formed by needle-thrust-needle coaxial composite nozzle is not uniform, the shell layer is easy to cover unevenly or clogged, and it is not easy to mass-produce coaxial fibers

Method used

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  • Flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and spinning method thereof
  • Flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and spinning method thereof
  • Flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and spinning method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of spinning method of flat pinhole coaxial electrospinning fiber composite spinneret, shell layer spinning liquid polyethylene oxide solution (a certain amount of relative molecular mass is polyethylene oxide powder of 600,000, dissolved A mixed solvent of absolute ethanol and pure water, the volume ratio of which is 1:2, forming a homogeneous solution with a mass volume concentration of 2%) is injected from the shell infusion channel (2) so that the solution cavity is always filled , and flow out from the through hole (4.2) to form the shell layer of the composite fiber; the polyvinyl alcohol solution of the core layer spinning solution (a certain amount of polyvinyl alcohol powder with a relative molecular mass of 146,000-186,000, collagen protein by mass ratio (1:1, soluble in pure water to form a homogeneous solution with a mass volume concentration of 15%) is injected from the core needle (1) to form the core layer of the composite fiber; Converge in the gro...

Embodiment 2

[0038] A kind of spinning method of flat pinhole coaxial electrospinning fiber composite spinneret, shell layer spinning solution (a certain amount of relative molecular mass is 30,000-70,000 polyvinyl alcohol powder, relative molecular mass is 600,000 polyvinyl alcohol powder Ethylene oxide powder, according to the mass ratio of 10:1, dissolved in the mixed solvent of absolute ethanol and pure water, and its volume ratio is 1:2, forming a homogeneous solution with a mass volume concentration of 10%) from the shell The layer infusion channel (2) injects and fills the solution cavity all the time, and flows out from the through hole (4.2) to form the shell layer of the composite fiber; the core layer spinning liquid polyethylene oxide solution (dialyzed Silk fibroin, dissolved in pure water to form a homogeneous solution with a mass volume concentration of 50%) is injected from the core needle (1) to form the core layer of the composite fiber; Merge in the groove to form compos...

Embodiment 3

[0040] A kind of spinning method of flat pinhole coaxial electrospinning fiber composite spinneret, shell layer spinning solution polystyrene solution (a certain amount of relative molecular mass is 350,000 polystyrene powder, dissolved in tetrahydrofuran and N , a mixed solvent of N-dimethylamide, the volume ratio of which is 1:4, forming a homogeneous solution with a mass volume concentration of 25%) is injected from the shell layer infusion channel (2) so that the solution cavity is always filled , and flow out from the through hole (4.2) to form the shell layer of the composite fiber; the polyurethane solution of the core layer spinning solution (a certain amount of relative density 1.12g / m 3 Polyurethane particles, dissolved in N,N-dimethylamide to form a homogeneous solution with a mass volume concentration of 8%) are injected from the core needle (1) to form the core layer of the composite fiber; the core layer and the shell layer are spun The silk liquid merges in the ...

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Abstract

The invention relates to a flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and a spinning method thereof. The spinning method comprises the steps that (1) a flat plate conductive electrode, an auxiliary spinneret plate and a core needle are configured into a coaxial fiber composite spinning jet, wherein a through hole is formed in the auxiliary spinneret plate, and a groove is formed at the silk outlet surface of the through hole, and thus the advantages that a uniform electric field is formed between the flat plate conductive electrode and a receiving plate, so the formation and the batch production of coaxial fibers are facilitated are realized; (2) being respectively injected into a core layer and a shell layer, spinning liquid are converged in the through hole and the groove to form composite liquid drops; the voltage and the spinning distance are properly adjusted, and the composite liquid drops reach the receiving plate after being high-frequency drawn, bent and swung under electric field force and is cured to form core-shell structured ultrathin electrostatic spinning fibers. The flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and the spinning method thereof have the advantages that the coaxial composite needle is simple to prepare, the preparation of coaxial fiber composite needles in batch is facilitated, and multifunctional composite fibers meeting the demands of various aspects can be prepared by replacing needle cores.

Description

technical field [0001] The invention relates to a flat pinhole coaxial electrospinning fiber composite spinneret and its spinning method, in particular to a flat pinhole coaxial electrospinning nozzle suitable for the production of large quantities of coaxial fibers and multifunctional composite fibers. Spinning fiber composite spinneret and spinning method thereof. Background technique [0002] Traditional electrospinning equipment uses a single capillary spinneret to spin, so it is usually used to prepare solid and smooth single-component nanofibers. The coaxial electrospun fiber divides the solution of the core layer and the shell material into two different syringes, and the spinneret system consists of two coaxial capillaries with different inner diameters. Under the action of a high-voltage electric field, the outer liquid After flowing out, it joins with the nuclear layer liquid. Due to the short confluence time, combined with the low diffusion coefficient of the po...

Claims

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Application Information

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IPC IPC(8): D01D5/00D01D5/34
Inventor 武会会曾泳春
Owner DONGHUA UNIV
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