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Preparation method of flexible carbon/lanthanum ferrite composite fiber membrane material

A technology of composite fiber membrane and lanthanum ferrite, which is applied in the direction of inorganic raw material artificial filaments, textiles, papermaking, non-woven fabrics, etc., can solve the problems of material microscopic appearance and property differences, and achieve uniform microscopic appearance and easy raw materials The effect of obtaining and preparation method is simple and easy

Active Publication Date: 2021-08-13
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to combine the advantages of the two, most of the methods currently used are to obtain carbon composite metal oxide materials through physical blending, but there are large differences in the microscopic morphology and properties of the materials obtained by this method.

Method used

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  • Preparation method of flexible carbon/lanthanum ferrite composite fiber membrane material
  • Preparation method of flexible carbon/lanthanum ferrite composite fiber membrane material
  • Preparation method of flexible carbon/lanthanum ferrite composite fiber membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Add 0.60g Fe(NO 3 ) 3 9H 2 O, 0.62g La(NO 3 ) 3 ·6H 2 O. 0.5g of polyvinylpyrrolidone (PVP) with an average molecular weight of 1,300,000 was dissolved in 5mL of N,N-dimethylformamide (DMF), and magnetically stirred for 12h until fully dissolved to obtain LaFeO 3 precursor solution.

[0035] 2. Using the electrospinning method, the LaFeO 3 The precursor solution is electrospun and collected by a drum collector. The parameters of electrospinning are: needle 21G, electrospinning speed 0.3mL / h, electrospinning distance 15-20cm, working voltage 12-15kV; Drying at low temperature for 12 hours to remove residual DMF to obtain carbon / lanthanum ferrite composite precursor fiber membrane, and fix the fiber membrane with a glass plate to prevent curling deformation. The precursor fiber film has uniform film formation and uniform color.

[0036] 3. Put the carbon / lanthanum ferrite composite precursor fiber film in step 2 at a flow rate of 30mL / min N 2 In the atmosphere...

Embodiment 2

[0038] 1. Add 0.60g Fe(NO 3 ) 3 9H 2 O, 0.62g La(NO 3 ) 3 ·6H 2 O. 0.67g of PVP with an average molecular weight of 1,300,000 was dissolved in 5mL of DMF, and magnetically stirred for 12h until fully dissolved to obtain LaFeO 3 precursor solution.

[0039] 2. Using the electrospinning method, the LaFeO 3 The precursor solution is electrospun and collected by a drum collector. The parameters of electrospinning are: needle 21G, electrospinning speed 0.3mL / h, electrospinning distance 15-20cm, working voltage 12-15kV; Drying at low temperature for 12 hours to remove residual DMF to obtain carbon / lanthanum ferrite composite precursor fiber membrane, and fix the fiber membrane with a glass plate to prevent curling deformation.

[0040] 3. Put the carbon / lanthanum ferrite composite precursor fiber film in step 2 at a flow rate of 30mL / min N 2 In the atmosphere, first raise the temperature at 2°C / min to 300°C, keep the temperature for 1 hour, then raise the temperature at 2°C / ...

Embodiment 3

[0042] 1. Add 0.60g Fe(NO 3 ) 3 9H 2 O, 0.62g La(NO 3 ) 3 ·6H 2O. Dissolve 0.83g of PVP with an average molecular weight of 1,300,000 in 5mL of DMF, stir magnetically for 12h until fully dissolved, and obtain 0.3mmol / mL of LaFeO 3 precursor solution.

[0043] 2. Using the electrospinning method, the LaFeO 3 The precursor solution is electrospun and collected by a drum collector. The parameters of electrospinning are: needle 21G, electrospinning speed 0.3mL / h, electrospinning distance 15-20cm, working voltage 12-15kV; Drying at low temperature for 12 hours to remove residual DMF to obtain carbon / lanthanum ferrite composite precursor fiber membrane, and fix the fiber membrane with a glass plate to prevent curling deformation.

[0044] 3. Put the carbon / lanthanum ferrite composite precursor fiber film in step 2 at a flow rate of 30mL / min N 2 In the atmosphere, first raise the temperature at 2°C / min to 300°C, keep the temperature for 1 hour, then raise the temperature at 2...

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Abstract

The invention discloses a preparation method of a flexible carbon / lanthanum ferrite composite fiber membrane material. The method comprises the following steps of dissolving inorganic ferric salt, lanthanum salt and a filament forming agent in a solvent to obtain a precursor solution; carrying out electrospinning on the precursor solution through an electrospinning technology, and obtaining a carbon / lanthanum ferrite composite precursor fiber membrane with uniform thickness through a roller collector; and annealing the carbon / lanthanum ferrite composite precursor fiber membrane in a nitrogen atmosphere to obtain the flexible carbon / lanthanum ferrite composite fiber membrane material. According to the preparation method, the carbon / lanthanum ferrite precursor fiber membrane material is obtained mainly through the electrostatic spinning technology; the flexible carbon / lanthanum ferrite composite fiber membrane is obtained by controlling the heat treatment atmosphere and the annealing condition; by the method, the preparation process of the carbon / lanthanum ferrite composite fiber membrane is simplified, and the obtained fiber membrane has certain flexibility; in the whole preparation process, raw materials are easy to obtain, the process is simple, and the cost is low; and the universality is very high.

Description

technical field [0001] The invention belongs to the technical field of artificial intelligence and self-supporting membrane materials, and in particular relates to a preparation method of a carbon / lanthanum ferrite composite flexible fiber membrane material. Background technique [0002] With the development of material preparation technology, a large number of film materials have been widely used, such as the production of semiconductor chips and the development of optical glass. In recent years, with the development of artificial intelligence, the development of self-supporting flexible film materials such as "electronic skin" needs to be solved urgently. Compared with traditional bulk materials, film materials have higher stability, and are more conducive to the miniaturization and integration of devices during the design process of devices. At present, the preparation methods of membrane materials mainly include vapor deposition method, spin coating method, pulling meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D04H1/728
CPCD01F9/08D04H1/728
Inventor 贾丽超杨凯
Owner SHAANXI NORMAL UNIV
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