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Preparation technology of metal nanometer fiber

A kind of metal nano-technology, preparation process, applied in fiber treatment, fiber chemical characteristics, chemical post-treatment of rayon, etc., can solve problems such as sticking, and achieve the effect of less modification, small appearance change, and high environmental tolerance

Inactive Publication Date: 2015-11-18
SUZHOU MINDOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, electrospinning can often only achieve the preparation of polymer nanofibers or oxide nanofibers (Chinese patent application 201010525552.6 realizes the preparation of hollow copper oxide nanofibers; Chinese patent ZL201010597725.5 uses electrospinning Prepared and obtained the preparation of Al2O3 fiber)
YiCui et al. of Stanford University in the United States used step-by-step sintering and reduction methods to prepare a network structure of metal nano-copper fibers (WuH., Hu, L., RowellM.W., etal., NanoLett.2010, 10, 4242 ), although the copper nanofibers were obtained, but because of the inevitable stacking in the spinning process, the fibers themselves were entangled, sintered, and bonded during the sintering and reduction processes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation technology of metal nanometer fiber
  • Preparation technology of metal nanometer fiber
  • Preparation technology of metal nanometer fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step (1) First prepare the electrospinning solution, take 8 grams of polyvinyl alcohol, 5 grams of polyethylene glycol, and 2 grams of polyvinylpyrrolidone dissolved in 60 grams of water and ethanol mixed solvent, then add 5 grams of copper acetate, 3 grams of After the copper nitrate was completely dissolved and evenly stirred, 0.2 g of isocyanate curing agent was added and the stirring was continued until it was completely uniform, and then placed for use.

[0038] Step (2) Electrospinning the spinning solution obtained in step (1) at a voltage of 10kV and an outflow rate of spinning solution of 0.01 ml / min. On the collection reel, the reel speed is 2 revolutions / minute. like figure 2 Shown is the scanning electron microscope (SEM) image of the copper salt polymer protofilament fibers obtained by electrospinning.

[0039] Step (3) Slowly pull out the raw silk fibers on the collection reel in step (2) in the form of individual fibers, then pass through the front-sta...

Embodiment 2

[0041] Similar to the process of Example 1, but in step (1), all polymers are adjusted to: 10 grams of polyethylene glycol, 2 grams of polyvinyl alcohol; the solvent is changed to pure water, and the amount is 60 grams; the metal salt is replaced by 3 grams of cobalt acetate, 3 grams of cobalt nitrate, and 2 grams of cobalt chloride; in step (2), the electrospinning voltage was adjusted to 8 kV, and the flow rate of the spinning solution was 0.02 ml / min; other conditions remained unchanged.

[0042] Figure 4 That is the SEM image of the finally obtained cobalt nanofibers.

Embodiment 3

[0044] Similar to the process of Example 1, but in step (1) all polymers are adjusted to: 9 grams of polyvinyl alcohol, 1 gram of polyvinyl pyrrolidone, and 1 gram of water-based acrylate; the solvent is changed to pure water, and the dosage is 55 grams The metal salt is replaced with 5 grams of silver nitrate, 3 grams of palladium chloride, and 0.5 grams of palladium acetylacetonate; the curing agent is changed to urea, and the dosage is 0.8 grams; the electrospinning voltage is adjusted to 9kV in step (2), and the flow rate of the spinning solution It was 0.015 ml / min; the rest of the conditions were unchanged.

[0045] Figure 5 It is the SEM image of the prepared silver-palladium alloy nanofibers with super soft properties. It can be seen from the figure that this alloy fiber has superior flexibility and excellent bending resistance.

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Abstract

The invention provides a preparation technology of metal nanometer fiber. The preparation technology comprises the following steps: 1) dissolving metal salt, macromoleclar polymer and curing agent in a solvent, obtaining a static spinning liquid; 2) placing the static spinning liquid in a static spinning equipment for spinning, obtaining a jet spinning protofilament, and collecting the jet spinning protofilament in a single fiber mode on a first collection reel; 3) slowly pulling out the jet spinning protofilament on the first collection reel collected in the step 2), placing the jet spinning protofilament in a two stage continuous tunnel furnace for heating and sintering, wherein, a front section is air atmosphere sintering and a back section is a reducing atmosphere sintering; 4) winding and collecting a metal nanometer fiber obtained by sintering in the step 3) in single fiber mode to a second collection reel, and obtaining a metal nanometer fiber. According to the invention, the continuous single metal nanometer fiber of high quality is effectively formed, and the fiber has the ultrafine, ultrasoft and high conductive characteristics.

Description

technical field [0001] The invention relates to a preparation process of a class of metal nanofibers, in particular to a conductive nanofiber that can be used in the fields of electrocardiographic signals, electromyographic signals, brain electrical signals, respiratory signal acquisition and transmission, smart wear, smart textiles, flexible electronic devices, etc. , flexibility, diameter, and composition can adjust the preparation process of metal nanofibers. Background technique [0002] Since Apple Inc. (Apple Inc.) released the first-generation touch-screen mobile phone in 2007, people's awareness and demand for smart devices have become more and more in-depth. Especially with the wide application and popularization of the new generation of smart wearable hardware represented by the smart watch AppleWatch released by Apple in 2014, the concept of smart wear is deeply rooted in the hearts of the people. However, existing smart wearable hardware is often widely criticiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01F11/00D01D5/00
Inventor 谷小虎
Owner SUZHOU MINDOM TECH
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