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Preparation method of flexible silicate nanofiber membrane

A nanofiber membrane, silicate technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing and other directions, can solve the problems of difficult separation and recovery, nanomaterial agglomeration, etc., to achieve easier separation and recovery, avoid agglomeration, good mechanical the effect of strength

Active Publication Date: 2018-11-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a flexible silicate nanofiber membrane and its preparation method to solve the problem of nanomaterial agglomeration in the use process of traditional nanosilicate materials and difficult separation and recovery after use, and to maximize the Operability and practical applicability of acid salt materials

Method used

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  • Preparation method of flexible silicate nanofiber membrane
  • Preparation method of flexible silicate nanofiber membrane
  • Preparation method of flexible silicate nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Dissolve 2.00 g of polyvinyl butyral in a mixed solution of 8.00 g of ethanol and water (the volume ratio of ethanol and water is 2:1), and configure a polymer solution with a mass fraction of 20 wt %;

[0035] (2) Mix 4.16g tetraethyl orthosilicate, 1.60g water, 1.48g ethanol, and 0.08g phosphoric acid, and stir for 36 hours to obtain a silicon source solution;

[0036] (3) The above polymer solution and the silicon source solution are fully stirred and mixed to obtain an electrospinning solution;

[0037](4) Put the electrospinning solution into the spinneret of the spinning equipment. The inner diameter of the glass spinneret is 2mm, the working voltage of the electrospinning equipment is 30kV, the aluminum sleeve is used as the anode, and the aluminum foil is used as the cathode Receive the product, the distance between the two poles is 30cm; perform electrospinning to obtain a polymer / silicon source composite fiber membrane;

[0038] (5) Put the polymer / silico...

Embodiment 2

[0041] (1) Dissolving 3.00g of polyvinyl alcohol in 7.00g of water at 70°C to configure a polymer solution with a mass fraction of 30wt%;

[0042] (2) Mix 7.55g of methyl orthosilicate, 1.80g of water, 0.95g of ethanol, and 0.02g of hydrochloric acid, and stir for 4 hours to obtain a silicon source solution;

[0043] (3) The above polymer solution and the silicon source solution are fully stirred and mixed to obtain an electrospinning solution;

[0044] (4) Electrospinning liquid is put into the spinneret of spinning equipment, and the pipe head internal diameter of glass spinneret is 0.5mm, and the operating voltage of electrospinning equipment is 15kV, with aluminum sleeve as anode, with aluminum foil as The cathode receives the product, and the distance between the two electrodes is 10 cm; electrospinning is performed to obtain a polymer / silicon source composite fiber membrane;

[0045] (5) Put the polymer / silicon source composite fiber membrane obtained in step (4) into a...

Embodiment 3

[0048] (1) 0.40g polyethylene oxide is dissolved in 9.60g water, and configuration mass fraction is the polymer solution of 4wt%;

[0049] (2) Mix 5.28g propyl orthosilicate, 1.08g water, 1.38g ethanol, and 0.03g oxalic acid, and stir for 10 hours to obtain a silicon source solution;

[0050] (3) The above polymer solution and the silicon source solution are fully stirred and mixed at a volume ratio of 1:1 to obtain an electrospinning solution;

[0051] (4) Put the electrospinning solution into the spinneret of the spinning equipment. The inner diameter of the glass spinneret is 1mm, the working voltage of the electrospinning equipment is 20kV, the aluminum sleeve is used as the anode, and the aluminum foil is used as the cathode. Receive the product, the distance between the two poles is 15cm; perform electrospinning to obtain a polymer / silicon source composite fiber membrane;

[0052] (5) Put the polymer / silicon source composite fiber membrane obtained in step (4) into a tu...

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Abstract

The invention relates to a flexible silicate nanofiber membrane and a preparation method thereof. With a flexible electrospinning SiO2 nanofiber membrane as a precursor template, the flexible SiO2 nanofiber membrane is transformed into the flexible silicate nanofiber membrane through a hydrothermal reaction process. The one-dimensional flexible silicate nanofiber membrane provided by the inventionhas long and continuous fibers, and silicate nanofibers can be solid fibers or hollow nanotube fibers. The fiber membrane can be bent and folded at will, and has good mechanical strength. The preparation method has universality, and different types of flexible silicate (magnesium silicate, copper silicate, nickel silicate, cobalt silicate, manganese silicate and the like) nanofiber membranes canbe prepared by changing the type of soluble inorganic salt in a hydrothermal reaction solution easily. The flexible silicate nanofiber membrane can be applied to many fields such as filler, catalytic,inorganic fluorescence, electrode material, adsorption, separation.

Description

technical field [0001] The invention belongs to the field of novel material preparation, and in particular relates to a preparation method of a flexible silicate nanofiber membrane. Background technique [0002] Silicate materials are widely used in fillers, catalysis, inorganic fluorescence, electrode materials, adsorption, separation and other fields due to their cheapness, stability, and environmental friendliness. Compared with bulk materials, nanoscale silicate materials have more application potential in specific fields due to surface effects, quantum size effects, small size effects, and macroscopic quantum tunneling effects. Among the many methods for preparing nanosilicate materials, nanoscale silicon dioxide (SiO 2 ) as precursors to prepare silicate materials through a hydrothermal reaction process has attracted a lot of attention. The nano-silicate structures usually obtained include nanospheres, short fibers, nanowires, nanotubes and the like. For example, So...

Claims

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Application Information

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IPC IPC(8): D06M11/56D06M11/155D06M13/188D06M11/65D06M11/26D01F9/08D01F6/50D01F1/10D04H1/728D01D5/00
CPCD01D5/0015D01F1/10D01F6/50D01F9/08D04H1/728D06M11/155D06M11/26D06M11/56D06M11/65D06M13/188
Inventor 李响李艳姿赵锐晁珅王策
Owner JILIN UNIV