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Collection device and preparation method of directional continuous nanofiber bundles

A nanofiber, collecting device technology, used in fiber processing, textile and papermaking, filament/thread forming, etc., can solve the problems of inability to maintain continuity, low fiber orientation, and low spinning orientation, and achieve easy operation. , the effect of high degree of orientation and low cost

Active Publication Date: 2019-08-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first object of the present invention is to provide a collection device for oriented continuous nanofiber bundles, which solves the problems in the prior art that rely on the low degree of orientation and poor continuity of fibers prepared by the action of an electric field
[0008] Another object of the present invention is to provide a method for preparing oriented continuous nanofiber bundles, which solves the problem that the existing electrospinning technology has a low degree of spinning orientation and cannot maintain continuity

Method used

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  • Collection device and preparation method of directional continuous nanofiber bundles
  • Collection device and preparation method of directional continuous nanofiber bundles
  • Collection device and preparation method of directional continuous nanofiber bundles

Examples

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preparation example Construction

[0039] A method for preparing oriented continuous nanofiber bundles is specifically implemented according to the following steps:

[0040] Step 1. Add the ceramic precursor and the spinnable polymer to the solvent to prepare the spinning solution;

[0041] Step 2. Build a directional continuous fiber bundle collection device;

[0042] Step 3. Apply the electrospinning equipment, and set the operating parameters of the electrospinning equipment for fiber preparation, and collect the fibers with the oriented continuous fiber bundle collecting device built in step 2 to obtain the oriented continuous fiber bundle.

[0043] Electrospinning equipment is YFSP-T spinning machine.

[0044] All reagents used are chemically pure.

[0045] In step 1, the specific concentration of the spinning solution is composed of the following substances in terms of mass percentage: ceramic precursor 0%-30%, spinnable polymer 10%-30%, solvent 40%-90%, the sum of the above components is 100% .

[0046] The ceramic...

Embodiment 1

[0050] Example 1 Preparation of oriented PMMA nanofiber bundle

[0051] Step 1. Add 1 g of polymethyl methacrylate (PMMA) to 9 g of N,N-dimethylformamide solvent to completely dissolve the spinning solution;

[0052] Step 2. Build a collection device for oriented PMMA nanofiber bundles, where a is 2 cm, b is 4 cm, c is 6 cm, and d is 1 cm;

[0053] Step 3. Place the obtained spinning solution in the push pump, place the spinning nozzle above the insulating shaft in the oriented continuous fiber bundle collection device obtained in Step 2, adjust the spinning voltage to 16kv, the advance speed to 0.1mL / h, and the receiving distance It is 15cm, the spinning temperature is at 20℃, the humidity is at 10%, the fiber is ejected, and the insulating shaft 2 is controlled to rotate for oriented collection of the fibers. The speed of the insulating shaft 2 is 20r / min. After 5 minutes, the oriented PMMA nanofiber bundle is finally obtained .

Embodiment 2

[0054] Example 2 Preparation of oriented PVDF-based composite fiber bundle

[0055] Step 1. Add 2g of isopropyl titanate and 2g of polyvinylidene fluoride (PVDF) into a mixed solvent of 4g of N,N-dimethylformamide and 2g of acetylacetone to obtain a spinning solution;

[0056] Step 2. Build a collection device for oriented PVDF-based composite fiber bundles, where a is 3cm, b is 6cm, c is 10cm, and d is 3cm;

[0057] Step 3. Place the obtained spinning solution in the push pump, place the spinning nozzle above the insulating shaft in the oriented continuous fiber bundle collection device obtained in Step 2, adjust the spinning voltage to 20kv, the advance speed to 0.3mL / h, and the receiving distance It is 18cm, the spinning temperature is 25℃, the humidity is 30%, the fiber is ejected, and the insulation shaft 2 is controlled to rotate for directional collection of fibers. The rotation speed of the insulation shaft 2 is 80r / min. After 6 minutes, the oriented PVDF-based composite fibe...

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Abstract

The invention discloses a collection device of directional continuous nanofiber bundles and further discloses a preparation method of the directional continuous nanofiber bundles. The circumferentialbinding force of rotating water flow is fully utilized, directional arrangement of the fiber is realized under the floating force and the rotating tension of an insulating rotating shaft, and therebythe directional continuous nanofiber bundles arranged along the circumferential direction are prepared. In the preparation method, the directional continuous nanofiber bundles can be easily and effectively collected by the collecting device, and problems about difficulty in directional collection of existing electrospinning and in maintenance of continuity are solved.

Description

Technical field [0001] The invention belongs to the field of nanofiber preparation, relates to a collection device for oriented continuous nanofiber bundles, and also relates to a method for preparing oriented continuous nanofiber bundles. Background technique [0002] Electrospinning is a simple and convenient preparation process of nanofibers. The device has simple structure, low cost, a wide variety of spinnable materials, and controllable processes. It is widely used in biomedicine, textile filtration, catalytic sensing and microelectronic devices. And many other fields. However, the whipping and splitting of the electrospinning jet leads to disordered fiber arrangement. This random orientation severely limits the development of tissue engineering. At present, researchers have developed preparation methods such as roller method, parallel electrode method, and turntable method to align nanofibers, and developed different collection devices to collect oriented nanofiber bundle...

Claims

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Application Information

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IPC IPC(8): D01D5/00
CPCD01D5/0015D01D5/0076
Inventor 汤玉斐刘照伟赵康刘凯波宋琳怡
Owner XIAN UNIV OF TECH
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