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Method for preparing anti-static and high-performance flue gas purification filter material

A flue gas purification and high-performance technology, which is used in the preparation of flue gas purification filter materials and the preparation of anti-static, temperature-resistant and wear-resistant flue gas purification filter materials, which can solve the problem of poor mechanical strength, low wear resistance and high temperature resistance. , poor conductivity and other problems, to achieve the effect of extending the service life, expanding the scope of application, and improving the speed of static dissipation

Active Publication Date: 2014-05-07
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the common problems of poor electrical conductivity, poor mechanical strength, low wear resistance and high temperature resistance of existing smoke filter materials, the present invention proposes a preparation method of anti-static high-performance smoke purification filter material

Method used

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  • Method for preparing anti-static and high-performance flue gas purification filter material

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Experimental program
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Effect test

Embodiment 1

[0018] Add 0.01g of graphene oxide and 0.25g of graphene to 50ml of dimethylformamide solution, ultrasonically disperse evenly, then add 5g of PVDF, heat in a 60°C water bath until dissolved evenly, and obtain a uniform solution. The solution was injected into the syringe, and the PVDF nanofiber membrane with graphene oxide and graphene attached was obtained by controlling the liquid inflow rate of the solution to be 13 μl / min and the spinning voltage to be 22 kv. The average diameter of the PVDF nanofibers is 750 nm, and the thickness of the film is 80 μm.

[0019] Heat-treat the PVDF nanofiber membrane in a vacuum oven at 200°C for 60 minutes to obtain an antistatic PVDF nanofiber membrane. The SEM image is as follows figure 1 shown. Evaluate the resistivity and wear resistance of the test film, and the surface resistivity of the antistatic PVDF nanofiber film can reach 2×10 3 Ω, the wear resistance is improved by more than 220% compared with the filter material of the sam...

Embodiment 2

[0021] Add 0.005g of graphene oxide and 0.05g of single-walled carbon nanotubes to 50ml of dimethylacetamide solution, ultrasonically disperse evenly, then add 5g of aramid fiber 1313, heat in a water bath at 50°C until uniformly dissolved, and obtain a uniform solution. The solution was injected into the syringe, and the aramid 1313 nanofiber filter membrane with graphene oxide and single-walled carbon nanotubes attached was obtained by controlling the liquid inflow rate of the solution to 13 μl / min and the control voltage to 25 kv. The average diameter of the aramid 1313 nanofiber is 850 nm, and the thickness of the film is 72 μm.

[0022] The aramid 1313 nanofiber filter membrane was heat-treated in a vacuum oven at 50° C. for 100 min to obtain an antistatic aramid 1313 nanofiber filter membrane. Evaluate the resistivity and wear resistance of the test membrane, and the surface resistivity of the antistatic aramid 1313 nanofiber filter membrane is less than 3.5×10 3 Ω, and...

Embodiment 3

[0024] Add 0.01 g of graphene oxide and 0.1 g of multi-walled carbon nanotubes to 50 ml of dimethyl sulfoxide solution, ultrasonically disperse evenly, then add 10 g of polyimide, and stir magnetically for 12 hours until it dissolves evenly to obtain a uniform solution. The solution was injected into the syringe, and the polyimide nanofiber filter membrane with graphene oxide and multi-walled carbon nanotubes attached was obtained by controlling the liquid inlet speed of the solution to 12 μl / min and the control voltage to 24 kv. The average diameter of the polyimide nanofibers was 680 nm, and the thickness of the film was 88 μm.

[0025] The polyimide nanofiber membrane was heat-treated in a vacuum oven at 300° C. for 60 minutes to obtain an antistatic polyimide nanofiber filter membrane. Evaluate the resistivity and wear resistance of the test membrane, and the surface resistivity of the antistatic polyimide nanofiber filter membrane is less than 1.2×10 3 Ω, the wear resist...

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Abstract

The invention discloses a method for preparing an anti-static and high-performance flue gas purification filter material. A nano-fiber filter material with electric conductivity, heat resistance and abrasion resistance is prepared through a static spinning technology and a nano material modification technology, so that the anti-static performance, high temperature resistance and abrasion resistance of the flue gas purification filter material are improved. According to the prepared anti-static and high-performance flue gas purification filter material, the internal static consumption speed of a membrane filter material in the using process can be effectively improved; moreover, filter material fibers are compounded with nano-scale particles, so that the dust washing abrasion resistance of the filter material can be greatly improved, the service life is prolonged, and the application range of the filter material is expanded. By the test on one of the filter material performances, the surface resistivity of a membrane is smaller than 1.2*10<3> omega, and the abrasion resistance of the anti-static and high-performance flue gas purification filter material is improved by over 260 percent compared with the abrasion resistance of a same-texture filter material without nano material modification.

Description

technical field [0001] The invention relates to the preparation of a flue gas purification filter material, in particular to a preparation method of an antistatic, temperature-resistant and wear-resistant flue gas purification filter material, which belongs to the field of flue gas purification. Background technique [0002] As the country has become more and more strict on environmental protection, people have paid more and more attention to the comprehensive treatment technology of industrial smoke and dust pollution. Due to the advantages of high filtration efficiency and long service life, bag dust removal technology is more and more widely used in the field of industrial smoke and dust control. The filter material is a key component of the bag filter, and its performance determines the stability of the entire system. Therefore, when there is high-risk (combustible and explosive) smoke and dust in the comprehensive treatment of iron and steel smelting, waste incineratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14D04H1/728
Inventor 任以伟周欢田恩玲王兴组李静
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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