CN115445325A - Polytetrafluoroethylene filter material with antistatic coating, preparation method of filter material and dust removal filter bag - Google Patents
Polytetrafluoroethylene filter material with antistatic coating, preparation method of filter material and dust removal filter bag Download PDFInfo
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- CN115445325A CN115445325A CN202211055125.5A CN202211055125A CN115445325A CN 115445325 A CN115445325 A CN 115445325A CN 202211055125 A CN202211055125 A CN 202211055125A CN 115445325 A CN115445325 A CN 115445325A
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- polytetrafluoroethylene
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- filter material
- antistatic
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- -1 Polytetrafluoroethylene Polymers 0.000 title claims abstract description 71
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 71
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 71
- 239000011248 coating agent Substances 0.000 title claims abstract description 56
- 238000000576 coating method Methods 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000000428 dust Substances 0.000 title claims abstract description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 17
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims abstract description 17
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 16
- 239000004809 Teflon Substances 0.000 claims description 13
- 229920006362 Teflon® Polymers 0.000 claims description 13
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000007547 defect Effects 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 37
- 230000005611 electricity Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/50—Means for discharging electrostatic potential
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention relates to the technical field of filter materials, in particular to a polytetrafluoroethylene filter material with an antistatic coating, a preparation method of the filter material and a dust removal filter bag, wherein the polytetrafluoroethylene filter material comprises a polytetrafluoroethylene base layer and an antistatic layer covering the surface of the polytetrafluoroethylene base layer; the antistatic layer comprises the following raw materials in parts by weight: 42-50 parts of acrylic resin, 25-35 parts of polytetrafluoroethylene, 38-46 parts of nano graphene, 33-48 parts of ethyl acetate, 6-10 parts of nano aluminum oxide, 2-5 parts of auxiliary agent and 8-20 parts of deionized water. The nano-graphene is adopted as the conductive material, so that the conductive performance is good, the antistatic effect is guaranteed, the nano-alumina is added, the nano-alumina and the nano-graphene are compounded to form a three-dimensional honeycomb structure, the elasticity is good, the impact resistance is greatly improved, more importantly, the nano-alumina makes up the defect of poor high-temperature stability of the nano-graphene, and the prepared polytetrafluoroethylene filter material still has excellent antistatic capability in a high-temperature environment.
Description
Technical Field
The invention relates to the technical field of filter materials, in particular to a polytetrafluoroethylene filter material with an antistatic coating, a preparation method of the filter material and a dust removal filter bag.
Background
Static electricity is a natural phenomenon that is very common both in the manufacturing process and in our personal lives. Static electricity is generated by the excitation energy of electrons or ions generated between the surfaces of two substances as the contact surfaces are separated after the two substances are rubbed.
The material of the filter material is often a polymer nonwoven fabric, and when fiber particles and pipelines or filter substances generate violent and frequent friction and collision, strong static electricity is generated; in addition, the dusty gas flow is uncharged when entering the working zone, and the fiber particles in the dusty gas flow and filter particles generate violent tangential collision so as to generate electron exchange between the fiber particles and the filter particles, namely generate static electricity, namely generate saturated gas current. After the object is charged, the static electricity is always discharged. There are two ways of charge release: the first is natural dissipation, and the second is different forms of discharge. Electrostatic discharge is a process of converting electric energy into heat energy, and electric sparks are possibly generated, so that the electrostatic discharge becomes a fire source or a detonation source.
Aiming at the problem of static electricity of the filter material, an antistatic layer is generally sprayed on the surface of the filter material to achieve the purpose of removing the static electricity. However, the existing antistatic coating has poor adhesion and impact resistance after being sprayed, and the coating is easy to fall off after being used for a long time or being impacted.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a polytetrafluoroethylene filter material with an antistatic coating, a preparation method of the polytetrafluoroethylene filter material with the antistatic coating and a dust removal filter bag.
The invention solves the technical problems through the following technical means:
the polytetrafluoroethylene filter material with the antistatic coating comprises a polytetrafluoroethylene base layer and an antistatic layer covering the surface of the polytetrafluoroethylene base layer; the antistatic layer comprises the following raw materials in parts by weight: 42-50 parts of acrylic resin, 25-35 parts of polytetrafluoroethylene, 38-46 parts of nano graphene, 33-48 parts of ethyl acetate, 6-10 parts of nano aluminum oxide, 2-5 parts of auxiliary agent and 8-20 parts of deionized water.
As an improvement of the technical scheme, the auxiliary agent of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and a defoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 30-40min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (5) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
A dust removal filter bag is made of the polytetrafluoroethylene filter material with the antistatic coating.
The invention has the advantages that: part of polytetrafluoroethylene is added into the antistatic coating, so that the adhesive force of the antistatic coating after being sprayed on the polytetrafluoroethylene base layer is improved; the conductive material adopts the nano-graphene, so that the conductive performance is good, the antistatic effect is favorably ensured, the nano-alumina is also added, the nano-alumina and the nano-graphene are compounded to form a three-dimensional honeycomb structure, the elasticity is good, the impact resistance is greatly improved, more importantly, the nano-alumina makes up the defect of poor high-temperature stability of the nano-graphene, and the prepared polytetrafluoroethylene filter material still has excellent antistatic capability in a high-temperature environment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1, a teflon filter material having an antistatic coating layer, comprising a teflon-based layer and an antistatic layer covering the surface of the teflon-based layer; the antistatic layer comprises the following raw materials in parts by weight: 42 parts of acrylic resin, 25 parts of polytetrafluoroethylene, 38 parts of nano graphene, 33 parts of ethyl acetate, 6 parts of nano aluminum oxide, 2 parts of auxiliary additive and 8 parts of deionized water.
As an improvement of the technical scheme, the auxiliary additive of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and an antifoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 30min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (3) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
Embodiment 2, a teflon filter material with an antistatic coating includes a teflon-based layer and an antistatic layer covering the surface of the teflon-based layer; the antistatic layer comprises the following raw materials in parts by weight: 46 parts of acrylic resin, 30 parts of polytetrafluoroethylene, 42 parts of nano graphene, 40 parts of ethyl acetate, 8 parts of nano aluminum oxide, 4 parts of auxiliary additive and 15 parts of deionized water.
As an improvement of the technical scheme, the auxiliary agent of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and a defoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 35min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (3) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
Example 3, a teflon filter media with an antistatic coating, comprising a teflon-based layer and an antistatic layer covering the surface of the teflon-based layer; the antistatic layer comprises the following raw materials in parts by weight: 50 parts of acrylic resin, 35 parts of polytetrafluoroethylene, 46 parts of nano graphene, 48 parts of ethyl acetate, 10 parts of nano aluminum oxide, 5 parts of auxiliary additive and 20 parts of deionized water.
As an improvement of the technical scheme, the auxiliary additive of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and an antifoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 40min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (3) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
Comparative example 1, a teflon filter material having an antistatic coating layer, comprising a teflon-based layer and an antistatic layer covering the surface of the teflon-based layer; the antistatic layer comprises the following raw materials in parts by weight: 42 parts of acrylic resin, 38 parts of nano graphene, 33 parts of ethyl acetate, 6 parts of nano aluminum oxide, 2 parts of auxiliary additive and 8 parts of deionized water.
As an improvement of the technical scheme, the auxiliary agent of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and a defoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 30min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (3) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
Comparative example 2, a polytetrafluoroethylene filter material with an antistatic coating comprising a polytetrafluoroethylene-based layer and an antistatic layer covering the surface of the polytetrafluoroethylene-based layer; the antistatic layer comprises the following raw materials in parts by weight: 46 parts of acrylic resin, 30 parts of polytetrafluoroethylene, 40 parts of ethyl acetate, 8 parts of nano-alumina, 4 parts of auxiliary additive and 15 parts of deionized water.
As an improvement of the technical scheme, the auxiliary agent of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and a defoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 30-40min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (5) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
Comparative example 3, the polytetrafluoroethylene filter material with antistatic coating, including polytetrafluoroethylene base layer and antistatic layer covering on the surface of polytetrafluoroethylene base layer; the antistatic layer comprises the following raw materials in parts by weight: 50 parts of acrylic resin, 35 parts of polytetrafluoroethylene, 46 parts of nano graphene, 48 parts of ethyl acetate, 5 parts of auxiliary additive and 20 parts of deionized water.
As an improvement of the technical scheme, the auxiliary agent of the polytetrafluoroethylene filter material with the antistatic coating comprises a leveling agent, a dispersing agent and a defoaming agent.
A preparation method of a polytetrafluoroethylene filter material with an antistatic coating comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano graphene, ethyl acetate, nano alumina and deionized water, performing ultrasonic dispersion for 30-40min, adding an auxiliary agent, and uniformly mixing;
II, spraying: and (3) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
The following table I shows the technical indexes of the prepared polytetrafluoroethylene filter material with the antistatic coating:
as can be seen from the table I, the prepared polytetrafluoroethylene filter material coating with the antistatic coating has excellent performance, and compared with the comparative example 1, the antistatic coating does not contain polytetrafluoroethylene, and the antistatic coating has better binding force with a polytetrafluoroethylene substrate when polytetrafluoroethylene is added; compared with the comparative example 2 without adding nano graphene, the nano graphene has better conductivity, namely excellent antistatic capability; comparative example 3 has no nano alumina added, and the impact resistance and high temperature resistance of the antistatic coating are poor.
The polytetrafluoroethylene filter material with the antistatic coating prepared in the above examples 1-3 can be used for manufacturing a dust filter bag, and the manufactured dust filter bag has excellent antistatic performance.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The polytetrafluoroethylene filter material with the antistatic coating comprises a polytetrafluoroethylene base layer and an antistatic layer covering the surface of the polytetrafluoroethylene base layer; the antistatic layer is characterized by comprising the following raw materials in parts by weight: 42-50 parts of acrylic resin, 25-35 parts of polytetrafluoroethylene, 38-46 parts of nano graphene, 33-48 parts of ethyl acetate, 6-10 parts of nano aluminum oxide, 2-5 parts of auxiliary additive and 8-20 parts of deionized water.
2. The filter media of claim 1, wherein the filter media comprises: the auxiliary agent comprises a leveling agent, a dispersing agent and a defoaming agent.
3. A method for preparing a teflon filter material with an antistatic coating as claimed in any of claims 1-2, characterized in that it comprises the following steps:
i, preparation of an antistatic coating: mixing acrylic resin, polytetrafluoroethylene, nano-graphene, ethyl acetate, nano-alumina and deionized water, ultrasonically dispersing for 30-40min, adding an auxiliary additive, and uniformly mixing;
II, spraying: and (3) uniformly spraying the antistatic coating prepared in the step (I) on the surface of the polytetrafluoroethylene base layer.
4. A dust removal filter bag is characterized in that: is made of the polytetrafluoroethylene filter material with the antistatic coating of any one of claims 1-2.
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|---|---|---|---|
| CN202211055125.5A CN115445325B (en) | 2022-08-31 | 2022-08-31 | Polytetrafluoroethylene filter material with antistatic coating, preparation method of filter material and dedusting filter bag |
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| CN202211055125.5A CN115445325B (en) | 2022-08-31 | 2022-08-31 | Polytetrafluoroethylene filter material with antistatic coating, preparation method of filter material and dedusting filter bag |
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