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A composite helical fiber spinning device and spinning method thereof

A spinning device and fiber technology, applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problems of unstable whipping of electrospun fibers, reduced mechanical strength, and large ratio differences, and achieve the realization of Regulation of different degradation degrees, improvement of hydrophilicity and hydrophobicity, and durable effect

Active Publication Date: 2018-11-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only several different materials are electrospun separately and then mixed and deposited at the same time. Due to the whip instability of the electrospun fibers, the proportions of various materials in the blended fibers or nonwovens obtained at different receiving positions are very different. Multiple fibers do not guarantee uniform mix distribution
Moreover, at present, when two materials are prepared at the same time, the mixed deposition method can only be carried out after electrospinning, which cannot make multiple materials tightly bonded together, resulting in the inability to form a special orderly arrangement of the structure, and reducing the mechanical strength. Application and Promotion of Composite Fiber

Method used

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  • A composite helical fiber spinning device and spinning method thereof
  • A composite helical fiber spinning device and spinning method thereof
  • A composite helical fiber spinning device and spinning method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] figure 1 It is a two-component composite helical micro-nano fiber spinning device. In the device, there are two chambers in the insulating liquid storage chamber 1, and the PCL particles are dissolved in dichloromethane, and magnetically stirred at room temperature until the PCL is completely dissolved in dichloromethane. In methane, an electrospinning solution with a mass fraction of 8% was obtained; similarly, PLGA was dissolved in dichloromethane to obtain a spinning solution with a mass fraction of 10%. Close the liquid outlet of the stainless steel nozzle 7, and inject the PCL solution and the PLGA solution into the two chambers respectively. Fix the upper end of the insulating liquid storage chamber 1 to the output end of the motor 3, control the motor speed to 1k ~ 8k RPM, set the voltage of the two ring brushes to 16kV for PCL solution connection, 12kV for PLGA solution connection, and the stainless steel nozzle 7 liquid outlet and The distance between the coll...

Embodiment 2

[0047] Figure 2-Figure 6 It is a three-component composite helical micro-nano fiber spinning device. Dissolve PCL particles in dichloromethane and stir magnetically at room temperature until PCL is completely dissolved in dichloromethane to obtain an electrospinning solution with a mass fraction of 8%; similarly , PLGA was dissolved in dichloromethane to obtain an electrospinning solution with a mass fraction of 10%. Similarly, PVA was dissolved in pure water to obtain an electrospinning solution with a mass fraction of 3%. Close the liquid outlet of the stainless steel nozzle 7, and inject PCL solution, PLGA and PVA solution into the three liquid storage chambers respectively. Fix the upper end of the insulating liquid storage chamber 1 to the output end of the motor 3, control the motor speed to 3k~15kRPM, and set the voltage of the three ring brushes to 16kV for PCL solution, 12kV for PLGA solution, and 18kV for PVA solution. Stainless steel nozzle 7 The distance between...

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Abstract

The invention discloses a composite spiral fiber spinning apparatus and a spinning method thereof. The apparatus comprises an insulation liquid storage chamber, high-voltage power sources, a motor and a collector electrode, wherein the upper end of the insulation liquid storage chamber is connected with an output shaft of the motor, the insulation liquid storage chamber is at least provided with two chambers, a stainless steel nozzle is inserted in the bottom of each chamber, the insulation liquid storage chamber is provided with vents in the same quantity as the chambers, each vent communicates with the corresponding chamber, the insulation liquid storage chamber is sleeved by annular brushes in the same quantity as the chamber, each annular brush is connected with the corresponding chamber through a lead wire, each annular brush is connected with the anode of its respective high-voltage power source, and the cathodes of all the high-voltage power sources are connected with the collector electrode. According to the invention, the apparatus has features of electrospun fibers of multiple different materials, effectively improves the mechanical strength and the surface form through an intertwining effect, and has potential application prospect in such aspects as preparation of multifunctional biological supports, composite non-woven fabrics, materials for drug delivery and the like.

Description

technical field [0001] The invention relates to the technical field of composite fiber electrostatic spinning, in particular to a composite helical fiber spinning device and a spinning method thereof. Background technique [0002] High-voltage electrospinning technology is a micro-nano fiber preparation technology that has received extensive attention in recent years. By adjusting the experimental parameters, the size of the fiber can be adjusted arbitrarily from a few nanometers to tens of microns. It is currently the easiest way to prepare nanofiber materials. cheap way. Nanofibers prepared by electrospinning technology have the characteristics of ultra-high specific surface area, extremely large aspect ratio, high surface activity, and superior mechanical properties. They are widely used in textile engineering, tissue engineering, biotechnology, medical and health care and other fields. There are very broad application prospects. The principle is that under the action o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00
CPCD01D5/0061
Inventor 张明暐张春晨王肖雷张孟豪白伊鹤李劲松
Owner ZHEJIANG UNIV
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