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Method for preparing antistatic filter material with graphite powder

A powder preparation and antistatic technology is applied in the field of preparing antistatic filter materials by using graphite powder, which can solve the problems of limited temperature and corrosion resistance, limited application conditions of filter materials, explosion, etc. Reduces static build-up and expands application conditions

Inactive Publication Date: 2013-09-04
南京际华三五二一环保科技有限公司
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when there is high-risk (flammable and explosive) dust in the comprehensive treatment of coal-fired boilers, steel and other industries, the risk of deflagration or even explosion will be caused due to the accumulation of static electricity in the filter material.
Nowadays, the method of metal ion complex fiber blending is mostly used for the processing of antistatic filter materials. Because the antistatic fibers used in this method have limited tolerance to temperature and corrosion, the application conditions of the filter material are greatly limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] A kind of method utilizing graphite powder to prepare antistatic filter material, comprises the following steps:

[0015] 1) Preparation of plain felt

[0016] The glass fiber, aramid fiber and polyimide fiber are mixed in a ratio of 40:5:1, and the weight is 460g / m after opening, mixing, carding, laying and netting. 2 Glass fiber base cloth and needle punching, the final total weight is 860g / m 2 Composite filter material plain felt.

[0017] 2) Configuration of treatment agent

[0018] The mass percentage formula of the treatment agent is: polytetrafluoroethylene emulsion 8%, acrylate emulsion 8%, silicone oil 3.2%, water 80.8%. After mixing all the above materials evenly, add them to the bucket. After the treatment agent is prepared, soak the plain felt in the treatment agent.

[0019] 3) Post-impregnation treatment: The plain felt impregnated with the treatment agent is sprayed to attach nano-scale graphite powder to the surface of the filter material.

[0020]...

example 2

[0024] Another method utilizing graphite powder to prepare an antistatic filter material comprises the following steps:

[0025] 1) Preparation of plain felt

[0026] Preparation of plain felt: The polyphenylene sulfide fiber is opened, mixed, carded, laid, and combined through a series of non-woven equipment, and the weight is 127g / m 2 The polyphenylene sulfide fiber base cloth is needle-punched to obtain a total grammage of 550g / m 2 Polyphenylene sulfide cellulose felt. During singeing treatment, adjust the liquefied gas flow rate to 1.8-2.2, and observe the flame color as blue short flame. The speed of the main machine is 20~25m / min, and the treated felt surface should have no short fiber fluff.

[0027] 2) Configuration of treatment agent

[0028] The mass percentage formula of the treatment agent is: polytetrafluoroethylene emulsion 6%, acrylate emulsion 10%, water 84%.

[0029] After mixing the above materials evenly, add them to the bucket and mix well. After the ...

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Abstract

The invention discloses a method for preparing an antistatic filter material with graphite powder. The method comprises the steps of preparing a plain felt, preparing a treatment agent: as for the plain felt steeped with the treatment agent, attaching nanoscale graphite powder onto the surface of the filter material in a spraying manner, drying: allowing the filter felt with the surface attached with the nanoscale graphite powder to enter an oven for preliminary drying and baking by the action of traction of the oven, drying the surface of the filter felt, removing redundant water in the filter felt, and obtaining the antistatic filter material. According to the method, the nanoscale graphite powder is sprayed onto the filter material plain felt, so that low resistance is formed in and on the surface of the filter material, the electrostatic accumulation of the filter material during use can be reduced effectively, and the risks of deflagration and even explosion of flammable and explosive products such as coal dust and coal gas during filter due to electrostatic discharge and sparking are avoided.

Description

Technical field [0001] The present invention is a technical field of filter materials. Specifically, it is a method to prepare anticrofting filter materials with graphite powder. Background technique [0002] Nowadays, with the intensification of air pollution problems and the increase in human environmental awareness, accelerating the research of comprehensive management of air pollution has been increasingly concerned and valued by people.Therefore, when there is a high -risk (flammable and explosive) dust in industries such as coal -fired boilers, steel and other industries, the risk of deflagration or even explosion is caused by the accumulation of static electricity in the accumulation of static electricity.At present, the method of metal ionic fiber spinning is used for processing of anti -static filter material. Due to the limited tolerance of the temperature and corrosiveness used by the anti -static fiber used in this method, the application conditions of the filter mate...

Claims

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Application Information

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IPC IPC(8): B01D39/14
Inventor 于淼涵李晓兰隋鑫俞应珍何文荣
Owner 南京际华三五二一环保科技有限公司
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