Antistatic filtering material as well as preparation method and application thereof

Abstract

The invention provides an antistatic filtering material as well as a preparation method and application thereof. The antistatic filtering material is prepared from the following components: filtering base cloth, graphene and a dispersing agent. The antistatic material provided by the invention has the advantages of permanent antistatic property, extremely low blocking coefficient, excellent mechanical property and high temperature resistance, and can avoid the problem of explosion caused by static electricity and discharge of chemical dust, coal dust and the like when being applied to dust filtration.

Description

technical field [0001] The invention belongs to the technical field of modified materials, and relates to an antistatic filter material and its preparation method and application. Background technique [0002] In the dust removal process of industrial dusty gas, the static electricity on the dust is continuously accumulated to generate high-voltage sparks, which may easily cause dust explosion. Due to the good insulation performance of chemical fiber, its ordinary fiber filter material cannot effectively disperse the static charge generated by dust in time, resulting in the continuous accumulation of static charge on the surface of its fiber filter material. When the electrostatic charge accumulates to a certain level, static electric shock or spark discharge will occur, which will cause safety hazards such as explosive dust explosion and cause huge destructiveness. [0003] In order to prevent dust explosion, the current filter material generally uses mixed conductive fibe...

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Problems solved by technology

The mixed fiber layer of the filter felt is a mixed fiber layer of polyphenylene sulfide fibers and stainless steel fibers. The stainless steel conductive fibers in the filter felt provided by this patent application are irregularly distributed in the filter layer and non-filter layer of the filter material, and the conductive flow direction It is randomly divergent, so static electricity cannot be quickly conducted, and it is difficult to solve the problem of eliminating sparks generated by static electricity coalescence and causing combustion; at the same time, embedding metal wires in the base fabric will also affect the mechanical strength of the base fabric

CN102337622A discloses an antistatic base cloth for filter materials and its production method. The warp and weft yarns constituting the base cloth are all high-temperature heat-resistant fibers with deniers between 260-1500 deniers, and the warp direction is spaced at 2.7-1500 deniers. 3.5cm is interwoven with a mixed antistatic yarn of at least one carbon black or graphite fiber with a denier of 260-1500 and high-temperature heat-resistant fiber, and the weaving warp density is 120-180 / 10cm, The weft density is 20-80 threads / 10cm, and the base fabric is prepared. This patent application is a base fabric formed by embedding antistatic yarns in the warp direction. Since only a small amount of antistatic yarns are embedded in the warp direction, it will lead to conductive properties. Not ideal, unable to eliminate the problem of sparks caused by static electricity coalescence and even combustion, and cannot meet the conditions of explosion-proof and dust removal treatment conditions

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