High-wear-resistant anti-stripping electrostatic spinning nanofiber composite filter material and spinning method thereof

A nanofiber and composite filtration technology, applied in the field of electrospinning, can solve the problems of low strength, poor wear resistance, and the substrate and the nanofiber layer are not resistant to peeling, etc., and achieve high porosity, excellent performance, and excellent peeling resistance. Effect

Active Publication Date: 2014-09-10
上海迅江科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the composite nanofiber filter material in the prior art has the problems of low strength, poor wear resistance, and non-str

Method used

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  • High-wear-resistant anti-stripping electrostatic spinning nanofiber composite filter material and spinning method thereof
  • High-wear-resistant anti-stripping electrostatic spinning nanofiber composite filter material and spinning method thereof
  • High-wear-resistant anti-stripping electrostatic spinning nanofiber composite filter material and spinning method thereof

Examples

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Effect test

Embodiment 1

[0047] A high wear-resistant and anti-stripping electrostatic spinning nanofiber composite filter material and its spinning method, the specific steps are:

[0048] Step 1: The polyacrylonitrile powder and the polysulfone resin particles were placed in a vacuum oven at 70°C for 1.5 hours and a vacuum oven at 110°C for 2.5 hours, respectively.

[0049] The second step: dissolve the dried polyacrylonitrile powder in the DMF solution, place the solution on a magnetic stirrer and stir for 15 hours respectively to form a homogeneous solution; in the homogeneous solution, the mass of polyacrylonitrile The fraction is 30%; while polysulfone resin particles are dissolved in DMF solution, the solution is placed on a magnetic stirrer and stirred for 15 hours to form a homogeneous solution; in the homogeneous solution, the mass fraction of polysulfone is 35% %

[0050] Step 3: Draw a certain amount of DMF solvent into a 10mL needle tube, and then electrostatically spray it onto the rece...

Embodiment 2

[0053] A high wear-resistant and anti-stripping electrostatic spinning nanofiber composite filter material and its spinning method, the specific steps are:

[0054] Step 1: Place the polyethylene oxide powder and polyurethane particles in a vacuum oven at 70°C for 1.5 hours and in a vacuum oven at 110°C for 2.5 hours, respectively.

[0055]The second step: dissolve the dried polyethylene oxide powder in the DMAc solution, place the solution on a magnetic stirrer and stir for 15 hours respectively to form a homogeneous solution; in the homogeneous solution, the mass of polyethylene oxide Fraction is 28%; Polyurethane particle is dissolved in DMF solution simultaneously, and described solution is placed on magnetic stirrer and stirs 15 hours respectively, forms homogeneous solution; In described homogeneous solution, the massfraction of polyurethane is 30%

[0056] Step 3: Draw a certain amount of DMAc solvent into a 10mL needle tube, and electrostatically spray it onto the rece...

Embodiment 3

[0059] A high wear-resistant and anti-stripping electrostatic spinning nanofiber composite filter material and its spinning method, the specific steps are:

[0060] Step 1: Place the polycaprolactone particles and the polyethersulfone particles in a vacuum oven at 40°C for 3.5 hours and in a vacuum oven at 150°C for 1.0 hour, respectively.

[0061] Second step: dissolve the dried polycaprolactone particles in acetone, place the solution on a magnetic stirrer and stir for 10 hours respectively to form a homogeneous solution; in the homogeneous solution, polycaprolactone The mass fraction is 20%; while the polyethersulfone particles are dissolved in the NMP solution, the solution is placed on a magnetic stirrer and stirred for 15 hours to form a homogeneous solution; in the homogeneous solution, the mass fraction of polyethersulfone 40%

[0062] Step 3: Draw a certain amount of acetone solvent into a 10mL needle tube, and electrostatically spray it onto the receiving substrate ...

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Abstract

The invention relates to a high-wear-resistant anti-stripping electrostatic spinning nanofiber composite filter material and a spinning method thereof. The preparation method comprises the following step: in the electrostatic spinning process, performing one-step forming by controlling and regulating the solvent concentration/pressure difference/melting points of two different polymers/an electrostatic spray solvent, so as to obtain dense three-dimensional arc-hole structural composite filter material fully adhered to fiber lapping points, wherein the gram weight of a fiber layer is 0.01 to 30 g/m<2>, the wear resistance of the composite filter material is 600 to 3,000 circles, the anti-stripping intensity is 5 to 100 MPa, the filter efficiency to 0.008-2-mircon particles reaches more than 99.99%, the resistance pressure drop is below 25 Pa, and the clogging capacity is 100 to 3,000 g/m<2>. The spinning method has the advantages of simple preparation process and low cost, and the prepared composite filter material has wide application prospects in the fields of engine filtration, air compressor filtration, gas turbine filtration, indoor air purification and filtration, high-efficiency filtration and the like.

Description

technical field [0001] The invention belongs to the technical field of electrospinning, and relates to a high wear-resistant and anti-stripping electrospinning nanofiber composite filter material and a spinning method thereof, in particular to a method of forming a pressure difference on both sides of a receiving substrate and releasing it in the air on the receiving side. A high abrasion and anti-stripping electrospun nanofiber composite filter material containing a certain amount of volatile solvent vapor and a spinning method thereof. Background technique [0002] Electrospun nanofibers have the characteristics of small fiber diameter, small pore size, high porosity, and strong structure adjustability. The composite filter material prepared by combining it with the substrate has high filtration efficiency, low resistance pressure drop, high dust holding capacity and long service life. Life and other advantages make it indispensable in the fields of automotive engine filtr...

Claims

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Application Information

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IPC IPC(8): B01D39/16B32B27/08B32B27/12B32B27/02B32B37/06D01D5/00
Inventor 丁彬赵兴雷张世超宋骏陈坤俞建勇
Owner 上海迅江科技有限公司
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