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Polymer-ceramic compound nanometer fibrous membrane as well as preparation method and application thereof

A ceramic composite material, nanofiber membrane technology, applied in fiber processing, fiber chemical characteristics, chemical instruments and methods, etc., can solve problems such as poor mechanical strength of nanofiber membranes, and achieve high mechanical strength, high porosity, specific surface area. big effect

Active Publication Date: 2011-11-16
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a polymer-ceramic composite nanofiber membrane prepared by electrospinning. The composite nanofiber prepared by combining organic-inorganic materials improves the mechanical properties of the composite nanofiber and solves the problem of existing nanofibers. The problem of poor mechanical strength of the film

Method used

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  • Polymer-ceramic compound nanometer fibrous membrane as well as preparation method and application thereof
  • Polymer-ceramic compound nanometer fibrous membrane as well as preparation method and application thereof
  • Polymer-ceramic compound nanometer fibrous membrane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Preparation of composite spinning solution

[0037]Dissolve 8g of polyvinylidene fluoride in 64.4g of N,N-dimethylformamide and 27.6g of acetone, and stir at a temperature of 55°C for 24 hours to obtain a clear and transparent A solution, wherein the polyvinylidene fluoride in A solution The mass concentration of ethylene is 8%; 0.88g fumed silica (diameter is 200nm) nanoparticle joins 10gN, in the N-dimethylformamide, mixes with A solution after ultrasonic dispersion 3 hours, at room temperature with The planetary ball mill grinds for 24 hours to obtain a composite spinning solution; the mass of the ceramic material in the composite spinning solution is 40% of the total mass of the polyvinylidene fluoride and the ceramic material.

[0038] 2) Preparation of polymer-ceramic composite nanofiber membrane by electrospinning

[0039] Place the polyvinylidene fluoride-nanometer silicon dioxide composite spinning solution prepared in step 1) in the liquid injection device...

Embodiment 2

[0045] 1) Preparation of composite spinning solution

[0046] Dissolve 8g of vinylidene fluoride-hexafluoropropylene copolymer in 44.4g of N,N-dimethylformamide and 27.6g of acetone, and stir at 55°C for 24 hours to obtain a clear and transparent A solution, wherein, A solution The mass concentration of the vinylidene fluoride-hexafluoropropylene copolymer in the mixture is 10%; 2g fuming titanium dioxide (diameter is 300nm) nanoparticles are added to 20gN, in the N-dimethylformamide, after ultrasonic dispersion 1 hour, mix with A The solutions are mixed and ground at room temperature for 24 hours with a planetary ball mill to obtain a composite spinning solution; the mass of the ceramic material in the composite spinning solution is 20% of the total mass of the vinylidene fluoride-hexafluoropropylene copolymer and the ceramic material.

[0047] 2) Preparation of polymer-ceramic composite nanofiber membrane by electrospinning

[0048] Place the vinylidene fluoride-hexafluorop...

Embodiment 3

[0052] 1) Preparation of composite spinning solution

[0053] Dissolve 8g of vinylidene fluoride-hexafluoropropylene copolymer in 44.4g of N,N-dimethylformamide and 27.6g of acetone, and stir at 55°C for 24 hours to obtain a clear and transparent A solution, wherein, A solution The mass concentration of the vinylidene fluoride-hexafluoropropylene copolymer in the mixture is 10%; 0.89g of aluminum oxide (diameter is 500nm) nanoparticles are added to 10g of N, N-dimethylformamide, after ultrasonic dispersion for 3 hours Mix with solution A, and grind for 24 hours with a planetary ball mill at room temperature to obtain a composite spinning solution; the mass of the ceramic material in the composite spinning solution is 10% of the total mass of the vinylidene fluoride-hexafluoropropylene copolymer and the ceramic material.

[0054] 2) Preparation of polymer-ceramic composite nanofiber membrane by electrospinning

[0055] Place the vinylidene fluoride-hexafluoropropylene copolyme...

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Abstract

The invention relates to a polymer-ceramic compound nanometer fibrous membrane prepared by using an electrostatic spinning method and an application thereof. A polymer material and a ceramic material are compounded, thereby forming the polymer-ceramic compound nanometer fibrous membrane, wherein the weight of the polymer material is 60-90% of the weight of the polymer-ceramic compound nanometer fibrous membrane; the weight of the ceramic material is 10-40% of the weight of the polymer-ceramic compound nanometer fibrous membrane; a porosity factor between polymer-ceramic compound nanometer fibers in the polymer-ceramic compound nanometer fibrous membrane is 40-75%; and an aperture of a hole formed between the polymer-ceramic compound nanometer fibers is 0.2-10 microns. The polymer-ceramic compound nanometer fibrous membrane can be used as a membrane of a lithium ion battery, a supporter of a micro-filtration material, a supporter of a super-filtration material, a supporter of a nano-filtration material, and the like.

Description

technical field [0001] The invention belongs to the field of preparing nanofiber membranes by electrospinning, and in particular relates to a polymer-ceramic composite nanofiber membrane prepared by electrospinning, and an electrospinning preparation method and application of the nanofiber membrane. Background technique [0002] Electrospinning technology is a fast, simple, easy-to-operate and diverse technology for producing nanofibers. Polymers, sol-gels, polymer composite solutions or melts are placed in a syringe pump, and spinning with a certain viscosity The silk solution is injected into the tip of the needle under the drive of the syringe pump, and a droplet is formed at the tip of the needle. When a voltage is applied to the metal needle, the droplet is stretched to form a Taylor cone, and finally a charged jet is formed. The jet is stretched due to electrostatic repulsion and finally deposited on a grounded collector. Stretching due to bending instability results ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/00D01D5/00D01F1/10B01D69/12H01G4/06H01M2/16
CPCY02E60/12Y02E60/10
Inventor 操建华吴大勇唐代华
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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