Preparation method of bacterial cellulose fiber-based carbon nanofiber non-woven fabric

A bacterial cellulose and nano-carbon fiber technology, applied in the direction of microorganism-based methods, carbon fibers, biochemical equipment and methods, etc., can solve the problems of high cost and complicated process, and achieve low cost, high chemical purity and huge economic benefits Effect

Inactive Publication Date: 2015-09-02
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Electrospinning is currently the only method that can directly and continuously prepare polymer nanofiber non-woven fabrics, but the process is relatively complicated and the cost is relatively high

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Place the bleached bacterial cellulose wet film between a pair of holding rollers with a diameter of 20mm, and feed it at a certain speed (10 mm / min); through a polishing wheel composed of needle-shaped, superhard, and elastic stainless steel wires Needle-like carding on the surface, high-speed puncture, splitting and carding, transforming the bacterial cellulose wet film into bacterial cellulose fibers; filtering the bacterial cellulose microfibers through a filter press to prepare bacteria with 100% water content Cellulose microfiber strips. The ultrafine fiber diameter is 100nm, and the ultrafine fiber length is 40mm. The bacterial cellulose superfine fiber strips are processed by opening, carding, and web-forming to form a bacterial cellulose superfine fiber nonwoven fabric. After the above bacterial cellulose superfine fiber non-woven fabrics are treated with liquid nitrogen, they are put into a vacuum freeze dryer and freeze-dried. The modified porous bacteria...

Embodiment 2

[0028] Place the bleached bacterial cellulose wet film between a pair of holding rollers with a diameter of 50 mm, and feed it at a certain speed (50 mm / min); through a polishing wheel composed of needle-shaped, super-hard, and elastic stainless steel wires Needle-like carding on the surface, high-speed puncture, splitting and carding, transforming the bacterial cellulose wet film into bacterial cellulose fibers; filtering the bacterial cellulose microfibers through a filter press to prepare bacteria with 100% water content Cellulose microfiber strips. The ultrafine fiber diameter is 100nm, and the ultrafine fiber length is 60mm. The bacterial cellulose superfine fiber strips are processed by opening, carding, and web-forming to form a bacterial cellulose superfine fiber nonwoven fabric. After the above bacterial cellulose superfine fiber non-woven fabric is treated with liquid nitrogen, it is placed in a vacuum freeze dryer to freeze-dry, and after the superfine fiber non-wove...

Embodiment 3

[0030] Place the bleached bacterial cellulose wet film between a pair of holding rollers with a diameter of 80mm, and feed it at a certain speed (1000 mm / min); through a polishing wheel composed of needle-shaped, superhard, and elastic stainless steel wires Needle-like carding on the surface, high-speed puncture, splitting and carding, transforming the bacterial cellulose wet film into bacterial cellulose fibers; filtering the bacterial cellulose superfine fibers through a filter press to prepare bacteria with a water content of 90% Cellulose microfiber strips. The ultrafine fiber diameter is less than 100nm, and the ultrafine fiber length is less than 100mm. The bacterial cellulose superfine fiber strips are processed by opening, carding, and web-forming to form a bacterial cellulose superfine fiber nonwoven fabric. After the above bacterial cellulose superfine fiber non-woven fabric is treated with liquid nitrogen, it is placed in a vacuum freeze dryer to freeze-dry, and af...

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Abstract

The invention relates to a preparation method of a bacteria cellulose fiber-based carbon nanofiber non-woven fabric, which is characterized in that a bacteria cellulose wet film is adopted as a matrix raw material; and a carbon nanofiber yarn to be prepared is made through the following steps: adopting spinning and non-woven fabric technology to prepare a carbon nanofiber non-woven fabric with a superfine bacteria cellulose fiber subjected to refining and carding treatment by the needling; and conducting the pyrolysis carbonization and graphitization on the carbon nanofiber non-woven fabric. The preparation method has the benefits that the raw material source is wide; the price is low; the processing method is environment-friendly, safe, simple and efficient; the bacteria cellulose fiber-based carbon nanofiber non-woven fabric gained after processing has wide application fields; and the potential economic benefit is huge.

Description

technical field [0001] This patent relates to a preparation method of nano-carbon fiber non-woven fabric, especially a preparation method of bacterial cellulose fiber-based nano-carbon fiber non-woven fabric. technical background [0002] At the end of the 19th century, when people were studying the thermal cracking of hydrocarbons and the disproportionation of carbon monoxide, it was found that there were extremely fine fibrous substances on the surface of the catalyst. This kind of fibrous substances were carbon nanofibers (GNFs or CNFs). Carbon nanofibers are nanofibers formed by curling multilayer graphite sheets. They do not have an obvious hollow structure, and their diameters are generally between 10-500 nm. The structure and performance are in the transition state of vapor-grown carbon fibers and carbon nanotubes. It not only has the characteristics of vapor-grown carbon fibers, but also is very similar to carbon nanotubes in terms of structure, performance and appli...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4258D01D5/42D01D10/06D01D13/02D06C7/04D06M11/58C12P19/04C12R1/02D06M101/40
Inventor 张迎晨吴红艳张燕杰贾卫芳沈小刚伦瑞欣
Owner ZHONGYUAN ENGINEERING COLLEGE
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