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Preparation method of bionic high-strength high-flexibility nano composite fiber

A nano-composite fiber, high-strength and high-toughness technology, applied in the direction of wet spinning, inorganic raw material artificial filament, etc., can solve the problems of small size of nano-materials and difficult direct application, etc., and achieve low cost, stable assembly process and simple process Effect

Active Publication Date: 2019-11-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method involves making very thin layers (<100nm) of carbon dioxide on metal foils or other supports made from porous ceramic particles called “porcelain” that act like an insulator for electricity conductors. These tiny sheets have many small holes where gas molecules pass through them when they get inside. By adding water into these holes during this manufacturing step, it becomes possible to create stable structures containing extremely fine layered crystalline silicon carbons. Additionally, there may also include certain chemicals added at specific points along its length to improve their performance. Overall, this new way makes producing high quality single wall carbon quantum dots more efficient than traditional methods involving expensive precursory processes such as laser ablation techniques.

Problems solved by technology

The technical problem addressed by this patented text relates to creating strong yet flexible ceramium oxide (ZrO2) composites suitable for use in applications such as heat insulation or protection against radiation damage caused by nuclear weapons. Current methods involve sintered Zr02 particles mixed together at room temperature before being applied onto other substrate surfaces like steel plating. This method can lead to crackings during manufacturing process, resulting in decreased durability over time.

Method used

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  • Preparation method of bionic high-strength high-flexibility nano composite fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Preparation method of bionic high-strength and high-toughness graphene oxide-zirconia nanocomposite fibers

[0035] In the first step, prepare 50 mL of buffer solution with a pH value of 7.5 at room temperature, and stir for 10-30 minutes to obtain a uniformly mixed solution;

[0036] In the second step, take the homogeneously mixed solution obtained in the first step, add 5 mg of graphene oxide, stir at room temperature, and ultrasonically disperse evenly to obtain a brown-yellow graphene oxide solution with a mass concentration of 0.1 g / L;

[0037] In the third step, 14 mg of zirconium oxychloride octahydrate was added to the graphene oxide solution obtained in the second step, and the temperature was controlled at 25° C. and stirred for 30 minutes to obtain a uniformly mixed solution;

[0038] In the fourth step, heat the homogeneously mixed solution obtained in the third step to 60°C and continue to stir for 3 hours, then cool down to room temperature naturally, ult...

Embodiment 2

[0044] Preparation method of biomimetic high-toughness graphene oxide-zirconia nanocomposite fibers

[0045] The first step is to prepare 50mL buffer solution with a pH value of 7.5 at room temperature, and after stirring for 10-30min, a uniformly mixed solution can be obtained;

[0046] In the second step, take the homogeneously mixed solution obtained in the first step, add 5 mg of graphene oxide, stir at room temperature, and ultrasonically disperse evenly to obtain a brown-yellow graphene oxide solution with a mass concentration of 0.1 g / L;

[0047] In the third step, 8 mg of zirconium oxychloride octahydrate was added to the graphene oxide solution obtained in the second step, and the temperature was controlled at 25° C. and stirred for 30 minutes to obtain a uniformly mixed solution;

[0048] In the fourth step, heat the homogeneously mixed solution obtained in the third step to 40° C., and continue to stir for 2 hours, then cool down to room temperature naturally, ultraso...

Embodiment 3

[0054] Preparation method of biomimetic graphene oxide nanocomposite fiber

[0055] The first step is to take a certain amount of graphene oxide, add it to water, and prepare a graphene oxide spinning solution with a concentration of 5g / L, and disperse it evenly by ultrasonication for 2 hours;

[0056] The second step is to prepare an ethanol-water coagulation bath containing 5wt% calcium chloride, 0.5wt% polyvinyl alcohol and 0.005wt% glutaraldehyde, wherein the volume ratio of ethanol to water is 1:3, and it is obtained after stirring and ultrasonic Mix uniform coagulation bath solution;

[0057] The third step is to inject the uniformly dispersed spinning solution obtained in the first step into the syringe, inject it into the coagulation bath obtained in the second step at a rate of 0.13mL / min, and let it stand for 0.5h to obtain the gel fiber;

[0058] In the fourth step, the gel fiber obtained in the third step is washed and dried naturally, and then heat-treated at a c...

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Abstract

The invention belongs to the technical field of preparation of light high-strength nano materials and relates to a preparation method of a bionic high-strength high-flexibility nano composite fiber. According to the method, with zirconium oxychloride octahydrate as a raw material, firstly, a nano sheet layer material is prepared, and then by using a wet-method spinning technology, the graphene oxide-zirconium oxide high-strength high-flexibility composite material of a shell-based imitation structure and in a nano scale rule array is prepared. The method comprises the specific steps that (1) astandard buffer solution is prepared at the room temperature; (2) a certain amount of graphene oxide and zirconium salt are added into the solution, the mixed solution is evenly stirred, heated and stirred for 3 hours, and an obtained precipitate is centrifuged and washed; (3) a solidification bath is prepared; (4) the obtained precipitate is prepared into a spinning solution with a certain concentration, the spinning solution is injected into the solidification bath, standing is conducted for 0.5-24 hours, and a gel fiber can be obtained; (5) the gel fiber is washed, dried and subjected to thermal treatment to obtain the bionic high-strength high-flexibility nano composite material.

Description

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Claims

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Application Information

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Owner BEIHANG UNIV
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