CN109021729B - Coating, filtering piece and dust collector - Google Patents

Coating, filtering piece and dust collector Download PDF

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Publication number
CN109021729B
CN109021729B CN201810674682.2A CN201810674682A CN109021729B CN 109021729 B CN109021729 B CN 109021729B CN 201810674682 A CN201810674682 A CN 201810674682A CN 109021729 B CN109021729 B CN 109021729B
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China
Prior art keywords
coating
filter
cotton
filter cotton
filter element
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CN201810674682.2A
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CN109021729A (en
Inventor
王淼
王立莹
刘奕燎
张凯
熊玉明
赵铠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Jiangsu Midea Cleaning Appliances Co Ltd
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Midea Group Co Ltd
Jiangsu Midea Cleaning Appliances Co Ltd
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Priority to CN201810674682.2A priority Critical patent/CN109021729B/en
Publication of CN109021729A publication Critical patent/CN109021729A/en
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    • 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
    • C09D129/00—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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • 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
    • C09D133/04—Homopolymers or copolymers of esters
    • 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
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D171/02—Polyalkylene oxides
    • 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
    • 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
    • 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
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)

Abstract

The invention provides a coating, which comprises the following components: solvent, hydrophilic resin and sol particles; wherein, the mass percent of the solvent is 50 to 98 percent, the mass percent of the hydrophilic resin is 1 to 10 percent, and the mass percent of the sol particles is 1 to 40 percent. According to the coating provided by the invention, the solvent, the hydrophilic resin and the sol particles are mixed to form the coating, the hydrophilicity of the coating is improved through the hydrophilic resin, the sol particles ensure that the hydrophilic resin can form a micro-nano structure on the surface of a coated object, the cured coating is thin enough, and then after the coating is cured on the hole walls of the filter holes of the filter cotton, the filter cotton can still filter gas and liquid, in addition, the surface of the filter holes of the filter cotton has strong hydrophilicity, so that the filter holes of the filter cotton can be fully washed and cleaned, the filter cotton is clean and tidy, the filter holes are prevented from being blocked by a large amount of dust, the air permeability of the filter cotton is ensured, and the filter cotton is prevented from breeding bacteria.

Description

Coating, filtering piece and dust collector
Technical Field
The invention relates to the technical field of dust collectors, in particular to a coating, a filter piece and a dust collector.
Background
At present, the dust catcher on sale in the market, the research about filtration system also concentrates on improving the complete machine separation efficiency aspect more, and is less to the research of filtering the piece, and the filtration piece that uses on the current dust catcher product is ordinary filtration piece, inhales the ash many times after, and difficult water-washed clean seriously influences performance such as complete machine suction to, a large amount of rubbish is piled up in filtering the cotton, very easily breeds the bacterium, influences consumer and uses experience and health.
Disclosure of Invention
The invention aims to at least solve the technical problem that the filter element in the prior art is not easy to clean.
To this end, a first aspect embodiment of the invention provides a hydrophilic coating for coating a filter element to facilitate cleaning of the filter element.
In a second embodiment of the invention, a filter element coated with the above-mentioned coating material is provided.
In a third aspect, the invention provides a vacuum cleaner incorporating the filter element.
In view of the above, according to a first aspect of the present invention, there is provided a paint, including: solvent, hydrophilic resin and sol particles; wherein, the mass percent of the solvent is 50 to 98 percent, the mass percent of the hydrophilic resin is 1 to 10 percent, and the mass percent of the sol particles is 1 to 40 percent.
According to the coating provided by the invention, the solvent, the hydrophilic resin and the sol particles are mixed to form the coating, the hydrophilicity of the coating is improved through the hydrophilic resin, the sol particles ensure that the hydrophilic resin can form a micro-nano structure on the surface of a coated object, the cured coating is thin enough, and then after the coating is cured on the hole walls of the filter holes of the filter cotton, the filter cotton can still filter gas and liquid, in addition, the surface of the filter holes of the filter cotton has strong hydrophilicity, so that the filter holes of the filter cotton can be fully washed and cleaned, the filter cotton is clean and tidy, the filter holes are prevented from being blocked by a large amount of dust, the air permeability of the filter cotton is ensured, and the filter cotton is prevented from breeding bacteria.
In addition, the coating provided by the invention in the above embodiment may also have the following additional technical features:
in the above technical solution, preferably, the method further includes: the antistatic agent accounts for 0.5 to 1 percent of the mass percentage.
In the technical scheme, the antistatic agent is added, so that the surface of the cured coating is not easy to generate an electrostatic effect, and the coating is prevented from adsorbing dust particles under the action of static electricity.
In any of the above embodiments, preferably, the solvent comprises any one or more of the following: water, ethanol, acetone, ethyl acetate.
In this embodiment, the solvent may be any one of water, ethanol, acetone, and ethyl acetate, or a combination thereof.
In any of the above embodiments, preferably, the hydrophilic resin comprises any one or a combination of more than one of: polyvinyl alcohol, acrylate and polyethylene glycol.
In this embodiment, the hydrophilic resin may be any one of polyvinyl alcohol, acrylate, and polyethylene glycol, or a combination of a plurality of them.
In any of the above solutions, preferably, the sol particles include any one or more of the following: titanium dioxide, silicon dioxide and aluminum oxide.
In the technical scheme, the sol particles can be any one of titanium dioxide, silicon dioxide and aluminum oxide, or a combination of a plurality of the titanium dioxide, the silicon dioxide and the aluminum oxide.
In any of the above embodiments, preferably, the antistatic agent comprises any one or more of the following in combination: polyol ester, quaternary ammonium carboxylic acid inner salt, phosphate ester salt, sulfate ester salt and sulfate ester salt.
In this embodiment, the antistatic agent may be any one of polyol ester, quaternary ammonium carboxylate, phosphate ester salt, sulfate ester salt, or a combination thereof.
According to a second aspect embodiment of the present invention, there is provided a filter element comprising: filtering cotton; the coating is solidified on the wall of the filtering hole of the filtering cotton; wherein, the process of the coating solidified on the wall of the filter hole comprises the following steps: soaking the filter cotton in the coating; after the filter holes of the filter cotton are fully soaked with the coating, taking out the filter cotton; and curing the soaked filter cotton for a preset time at a preset temperature to enable the coating to be cured on the wall of the filter hole to form a coating.
According to the filter element provided by the invention, the filter cotton is soaked in the coating according to any one of the technical schemes, so that the filter holes of the filter cotton are fully soaked with the coating, the coating is ensured to be attached to each filter hole of the filter cotton, then the soaked filter cotton is subjected to curing treatment for a preset time at a preset temperature, the coating is cured on the hole wall of each filter hole to form the micro-nano coating, and the coating according to any one of the technical schemes is cured on the hole wall of each filter hole of the filter cotton, so that all beneficial effects of the coating according to any one of the technical schemes are achieved, and the beneficial effects are not stated.
In any of the above technical solutions, preferably, the preset temperature is in a range of 50 ℃ to 80 ℃; the value range of the preset time is 20min to 60 min.
In the technical scheme, the coating is cured on the filter cotton by curing treatment for 20min to 60min at the temperature of 50 ℃ to 80 ℃ so as to ensure that the properties of the coating and the filter cotton are not damaged.
In the above technical solution, preferably, the filter cotton includes any one or more of the following combinations: polyester foam cotton, polyurethane foam cotton, and melamine foam cotton.
In the technical scheme, the filter cotton can be any one of polyester foam cotton, polyurethane foam cotton and melamine foam cotton or a combination of a plurality of types.
In any of the above technical solutions, preferably, the thickness of the coating ranges from 20nm to 400 nm; the surface resistance of the coating had a value in the range of 108Ohm to 1010Ohm.
In this embodiment, the thickness of the cured layer of the coating material is adjusted to a rangeSetting the thickness of the filter cotton within 20nm to 400nm to avoid the coating from blocking the filter pores of the filter cotton; by setting the surface resistance of the cured layer of the coating material to a value within a range of 108To 1010Ohm to ensure the surface of the solidified layer of the coating has stronger antistatic property.
According to a third aspect of the present invention, there is provided a vacuum cleaner comprising: a filter element according to any one of the preceding claims.
The invention provides a vacuum cleaner, which comprises the filter element according to any one of the above technical solutions, so that the filter element according to any one of the above technical solutions has all the advantages, and the description is omitted here.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a schematic structural view of a filter element provided in accordance with an embodiment of the present invention;
fig. 2 shows a schematic view of the structure of a single filter hole in the filter element according to fig. 1.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
filter 1, filter cotton 10, filter hole 12 and coating 20.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring now to figures 1 and 2, a paint, filter element 1 and vacuum cleaner according to some embodiments of the present invention will be described.
According to a first aspect of the present invention, there is provided a coating for enhancing hydrophilicity of a filter cotton 10, comprising: solvent, hydrophilic resin and sol particles; wherein, the mass percent of the solvent is 50-98%, the mass percent of the hydrophilic resin is 1-10%, and the mass percent of the sol particles is 1-40%.
According to the coating provided by the invention, the solvent, the hydrophilic resin and the sol particles are mixed to form the coating, the hydrophilicity of the coating is improved through the hydrophilic resin, the hydrophilic resin can be ensured to form a micro-nano structure on the surface of a coated object by the sol particles, so that the cured coating 20 is thin enough, further, after the coating is cured on the pore walls of the filter pores 12 of the filter cotton 10, the filter cotton 10 can still filter gas and liquid, in addition, the surface of the filter pores 12 of the filter cotton 10 has strong hydrophilicity, the filter pores 12 of the filter cotton 10 can be fully washed and cleaned, the filter cotton 10 is clean and tidy, the filter pores 12 are prevented from being blocked by a large amount of dust, the air permeability of the filter cotton 10 is ensured, and the bacteria breeding of the filter cotton 10 is avoided.
The solvent is the majority to ensure that the coating is diluted enough to form a thin coating 20 on the walls of the filtration pores 12 of the filter cotton 10, so as to prevent the coating from being too viscous to block the filtration pores 12.
Further, still include: the antistatic agent accounts for 0.5 to 1 percent of the mass percentage.
In the embodiment, the antistatic agent is added, so that the surface of the cured coating is not easy to generate an electrostatic effect, and the coating is prevented from adsorbing dust particles under the action of static electricity.
In one embodiment of the present invention, preferably, the solvent comprises any one or more of the following in combination: water, ethanol, acetone, ethyl acetate.
In this embodiment, the solvent may be any one of water, ethanol, acetone, ethyl acetate, or a combination of more.
In one embodiment of the present invention, preferably, the hydrophilic resin includes any one or a combination of more of the following: polyvinyl alcohol, acrylate and polyethylene glycol.
In this embodiment, the hydrophilic resin may be any one of polyvinyl alcohol, acrylate, polyethylene glycol, or a combination of a plurality of them.
In one embodiment of the present invention, preferably, the sol particles comprise any one or more of the following in combination: titanium dioxide, silicon dioxide and aluminum oxide.
In this embodiment, the sol particles may be any one of titanium dioxide, silicon dioxide, aluminum oxide, or a combination of more.
In one embodiment of the present invention, preferably, the antistatic agent comprises any one or more of the following in combination: polyol ester, quaternary ammonium carboxylic acid inner salt, phosphate ester salt, sulfate ester salt and sulfate ester salt.
In this embodiment, the antistatic agent may be any one of polyol esters, quaternary amine carboxylic acid inner salts, phosphate esters, phosphate ester salts, sulfate esters, sulfate ester salts, or a combination of more.
According to a second aspect of the embodiment of the present invention, as shown in fig. 1 and 2, there is provided a filter member 1 comprising: a filter cotton 10; and a coating as provided in the embodiment of the first aspect of the invention cured on the walls of the filtration pores 12 of the filter cotton 10; the process of curing the coating on the wall of the filter hole 12 is as follows: soaking the filter cotton 10 in the coating; after the filtering holes 12 of the filter cotton 10 are fully soaked with the coating, taking out the filter cotton 10; and curing the soaked filter cotton 10 at a preset temperature for a preset time to cure the coating on the wall of the filter hole 12 to form a coating 20.
In the filter element 1 provided by the present invention, the filter cotton 10 is firstly soaked in the paint provided by the embodiment of the first aspect of the present invention, so that the filter pores 12 of the filter cotton 10 are fully soaked with the paint, and it is ensured that the paint adheres to each filter pore 12 of the filter cotton 10, then the soaked filter cotton 10 is subjected to a curing treatment at a predetermined temperature for a predetermined time, so that the paint is cured on the pore walls of the filter pores 12 to form the micro-nano coating 20, and the paint provided by the embodiment of the first aspect of the present invention is cured on the pore walls of the filter pores 12 of the filter cotton 10, so that the filter element has all the beneficial effects of the paint provided by the embodiment of the first aspect of the present invention, and no description is provided herein.
Specifically, hydrophilic resin is dispersed on the surface of the coated object through sol particles to form grafted hydrophilic groups, and the microstructure of the surface of the filter piece 1 is improved through the grafted hydrophilic groups, so that the filter piece is easy to clean by water washing, and the cleaning efficiency of the water washing reaches over 90 percent. Namely, the filter element 1 provided by the invention can effectively improve the washing performance of the filter element 1, reduce the attachment of impurities such as lint on the filter element 1, and reduce the breeding of microorganisms such as mites and mold.
In one embodiment of the present invention, preferably, the filter cotton 10 comprises any one or more of the following in combination: polyester foam cotton, polyurethane foam cotton, and melamine foam cotton.
In this embodiment, the filter cotton 10 may be any one of polyester foam cotton, polyurethane foam cotton, melamine foam cotton, or a combination of a plurality of them.
In one embodiment of the present invention, the preset temperature preferably ranges from 50 ℃ to 80 ℃.
In this embodiment, the coating is cured on the filter cotton 10 in a low temperature environment of 50 to 80 ℃ to ensure that the properties of the coating and the filter cotton 10 are not damaged, and the coating is completely cured on the surface of the filter cotton to form the micro-nano structure.
In an embodiment of the present invention, preferably, the preset time is in a range of 20min to 60 min.
In this embodiment, the coating is completely cured into the coating 20 with the micro-nano structure through curing for 20min to 60 min.
In one embodiment of the present invention, the thickness of the coating layer 20 preferably ranges from 20nm to 400 nm.
In this embodiment, the thickness of the micro-nano structure of the coating layer 20 is set within a range of 20nm to 400nm, so as to prevent the coating material from blocking the filter pores 12 of the filter cotton 10.
In one embodiment of the present invention, the surface resistance of the coating 20 preferably ranges from 108Ohm to 1010Ohm.
In this embodiment, the surface resistance of the cured layer of the coating material was set to a value in the range of 108To 1010Ohm to ensure the surface of the solidified layer of the coating has stronger antistatic property.
In a specific embodiment, the filter element manufacturing process provided by the invention comprises the following steps:
blending the coating;
surface modification of the filter cotton;
and (5) drying.
Specifically, the manufacturing method of the filter element provided by the invention comprises the following steps:
formulating a coating as provided in an embodiment of the first aspect of the invention;
soaking the filter cotton in the coating;
after the filter holes of the filter cotton are fully soaked with the coating, taking out the filter cotton;
and curing the soaked filter cotton for a preset time at a preset temperature to enable the coating to be cured on the wall of the filter hole to form a coating.
After the filter cotton is taken out, the filter cotton is placed still or thrown or extruded for a plurality of times, and redundant paint in the filter cotton is removed, so that the paint is attached to the hole walls of the filter holes of the filter cotton.
The preset temperature T is: t is more than or equal to 50 ℃ and less than or equal to 80 ℃.
The preset time t is as follows: t is more than or equal to 20min and less than or equal to 60 min.
Wherein, the filter cotton can be soaked firstly and then cut into the required shape, or can be cut into the required shape firstly and then soaked; the filter cotton can be firstly cured and then cut into the required shape, or can be firstly cut into the required shape and then cured.
According to a third aspect of embodiments of the present invention, there is provided a vacuum cleaner comprising: a filter element 1 according to an embodiment of the second aspect of the invention.
The invention provides a vacuum cleaner which comprises the filter element 1 provided in the second embodiment of the invention, so that the overall advantages of the filter element 1 provided in the second embodiment of the invention are achieved, and the description is omitted here.
According to the coating, the filter element 1 and the dust collector provided by the invention, the solvent, the hydrophilic resin and the sol particles are mixed to form the coating, the hydrophilicity of the coating is improved through the hydrophilic resin, the sol particles ensure that the hydrophilic resin can form a micro-nano structure on the surface of a coated object, the cured coating 20 is thin enough, further, after the coating is cured on the hole wall of the filter hole 12 of the filter cotton 10, the filter cotton 10 still can filter gas and liquid, in addition, the surface of the filter hole 12 of the filter cotton 10 has strong hydrophilicity, the filter hole 12 of the filter cotton 10 can be fully washed and cleaned, the filter cotton 10 is clean and tidy, the filter hole 12 is prevented from being blocked by a large amount of dust, the air permeability of the filter cotton 10 is ensured, and bacteria breeding of the filter cotton 10 is avoided.
In the present invention, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A filter element, comprising:
filtering cotton; and
the coating is solidified on the wall of the filtering hole of the filtering cotton;
wherein the process of curing the coating on the wall of the filter hole is as follows:
soaking the filter cotton in the coating;
after the filter holes of the filter cotton are fully soaked with the coating, taking out the filter cotton;
curing the soaked filter cotton for a preset time at a preset temperature to enable the coating to be cured on the wall of the filter hole to form a coating;
the coating comprises:
solvent, hydrophilic resin and sol particles;
wherein the solvent is 50 to 98% by mass, the hydrophilic resin is 1 to 10% by mass, and the sol particles are 1 to 40% by mass;
an antistatic agent, wherein the mass percent of the antistatic agent is 0.5-1%;
the hydrophilic resin comprises any one or more of the following:
polyvinyl alcohol, acrylate and polyethylene glycol.
2. The filter element according to claim 1,
the value range of the preset temperature is 50-80 ℃;
the value range of the preset time is 20min to 60 min.
3. The filter element according to claim 1 or 2,
the filter cotton comprises any one or more of the following combinations:
polyester foam cotton, polyurethane foam cotton, and melamine foam cotton.
4. The filter element according to claim 1 or 2,
the thickness of the coating ranges from 20nm to 400 nm;
the surface resistance of the coating ranges from 108 ohms to 1010 ohms.
5. The filter element according to claim 1,
the solvent comprises any one or more of the following combinations:
water, ethanol, acetone, ethyl acetate.
6. The filter element according to claim 1,
the sol particles include any one or more of the following in combination:
titanium dioxide, silicon dioxide and aluminum oxide.
7. The filter element according to claim 1,
the antistatic agent comprises any one or more of the following in combination:
polyol ester, quaternary ammonium carboxylic acid inner salt, phosphate ester salt, sulfate ester salt and sulfate ester salt.
8. A dust collector is characterized by comprising
A filter element according to any one of claims 1 to 7.
CN201810674682.2A 2018-06-27 2018-06-27 Coating, filtering piece and dust collector Active CN109021729B (en)

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Application Number Priority Date Filing Date Title
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CN109021729B true CN109021729B (en) 2020-08-07

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CN102241939B (en) * 2011-05-17 2013-02-13 华南理工大学 Organic-inorganic hybrid super-hydrophilic coating as well as preparation method and application thereof
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