CN107384093A - A kind of coating for shielding household electrical appliance electromagnetic radiation and preparation method thereof - Google Patents
A kind of coating for shielding household electrical appliance electromagnetic radiation and preparation method thereof Download PDFInfo
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- CN107384093A CN107384093A CN201710652287.XA CN201710652287A CN107384093A CN 107384093 A CN107384093 A CN 107384093A CN 201710652287 A CN201710652287 A CN 201710652287A CN 107384093 A CN107384093 A CN 107384093A
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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
- 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
- C09D125/00—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 aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated 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
- C09D131/00—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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0862—Nickel
-
- 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
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of coating for shielding household electrical appliance electromagnetic radiation, include the component of following weight proportion：40 60 parts of polymer emulsion, inhale 0.3 0.8 parts of 20 30 parts of ripple filler, 15 25 parts of CNT, 10 20 parts of epoxy resin, 6 15 parts of cenosphere, 5 15 parts of nano-sized iron oxide, 28 parts of nano metal nickel powder, 38 parts of nanometer silicon carbide, 15 parts of ZnOw, 0.5 3 parts of defoamer, 0.2 0.8 parts of coupling agent, 0.1 0.5 parts of thickener and coalescents.Household electric appliance operation, the coating using caused electromagnetic radiation can be shielded the invention provides a kind of, caused electromagnetic radiation when electrical equipment uses can be eliminated by being coated onto on various household electrical appliance, eliminate the harm that electromagnetic radiation is brought.
Description
Technical field
The present invention relates to household electrical appliance technical field, and in particular to it is a kind of shield household electrical appliance electromagnetic radiation coating and its
Preparation method.
Background technology
The life for developing into people and bringing high quality of science and technology, various industry or domestic electric appliances equipment are to people's
While production, life bring efficient, convenient, a dangerous stealthy pollution sources-electromagnetic radiation is invaded simultaneously also quietly
People's production, the every aspect of life are penetrated into, gradually endangers our health.Know from physics general knowledge, any electrical equipment leads to
Upper electric current will produce electromagnetic field or electromagnetic radiation.Arrive ultra-high-tension power transmission line and all kinds of power transmission and transformation, dispensing appliance, various works greatly
Industry electric equipment, and common air-conditioning, television set, computer, micro-wave oven, humidifier, air cleaner, electric blanket,；It is small to day
The household electrical appliance such as light lamp, hair-dryer, mobile phone, charger even power outlet, switchboard, wiring insert row can all produce electromagnetism spoke
Penetrate.The research of Jones John Hopkins University medical center scientist shows, even if the electromagnetic field least to attract attention may also cause
The symptoms such as stress, headache, depression and insomnia, cause immunity degradation, greatly improve the incidence of disease of various diseases.Australia is big
The scientist of Leah University of Adelaide once moved television set in front of the mouse for experiment to, open around the clock, a star
The uterus of some mouse and mammary gland canceration after phase, other mouse immunity drastically decline.The treatment of cancer foundation pair of the U.S. one
Some are chemically examined by the patient sample of electromagnetic radiation damage, as a result find the people to be worked near high-voltage line, its growth of cancer cells speed
24 times faster than common people of degree.It is born every year in China in about 20,000,000 children, it is defect youngster to have about 350,000, wherein about 250,000 be intelligence
Power is incomplete, has expert to think that electromagnetic radiation is one of important doubtful influence factor.It is and television set, air-conditioning, computer, electromagnetic oven, micro-
The electrical equipment such as ripple stove have turned into indispensable electrical appliance in people's life less, and people almost use them daily, therefore, often
It can all touch electromagnetic radiation, and with the appearance and popularization of all kinds of emerging electric equipment products, will be to the health care belt of people
Carry out the hidden danger of getting worse.Therefore, the World Health Organization（WHO）Electromagnetic radiation is classified as one of four big pollution sources of 21 century.
The present invention can eliminate or be obviously reduced caused electromagnetic radiation when electrical equipment uses, and it is original not change electrical equipment
Hardware and parameter, so as to promote the well-being of mankind.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided one kind can shield household electric appliance operation,
Using the coating of caused electromagnetic radiation, it is coated onto on various household electrical appliance caused when can eliminate electrical equipment use
Electromagnetic radiation, eliminate the harm that electromagnetic radiation is brought.
The present invention is in order to solve the above technical problems, adopt the following technical scheme that：
A kind of coating for shielding household electrical appliance electromagnetic radiation, include the component of following weight proportion：Polymer emulsion 40-60 parts,
Inhale ripple filler 20-30 parts, CNT 15-25 parts, epoxy resin 10-20 parts, cenosphere 6-15 parts, nano-sized iron oxide 5-15
Part, nano metal nickel powder 2-8 parts, nanometer silicon carbide 3-8 parts, ZnOw 1-5 parts, defoamer 0.5-3 parts, coupling agent 0.2-
0.8 part, thickener 0.1-0.5 parts and coalescents 0.3-0.8 parts.
Preferably, 50 parts of the polymer emulsion, inhale 25 parts of ripple filler, be 20 parts of CNT, 15 parts of epoxy resin, hollow
10 parts of microballon, 10 parts of nano-sized iron oxide, 5 parts of nano metal nickel powder, 5.5 parts of nanometer silicon carbide, 3 parts of ZnOw, defoamer
0.6 part of 1.7 parts, 0.5 part of coupling agent, 0.3 part of thickener and coalescents.
Preferably, the polymer emulsion is pure acrylic latex, vinyl acetate-acrylic copolymer emulsion or benzene second
Alkene-acrylate copolymer emulsion.
Preferably, the ripple filler of inhaling is one kind in conductive black, graphite, carboxyl iron or ferrite, and its granularity
100-200 mesh, purity are more than 99.5%.
Preferably, the defoamer is colourless silicone oil, polyethylene glycol or polypropylene glycol.
Preferably, the coupling agent is one kind in titanate coupling agent or silane coupler.
Preferably, the thickener is one kind in hydroxyethyl cellulose, hydroxymethyl cellulose or hydroxypropyl cellulose.
Preferably, the coalescents are alcohol ester 12.
A kind of preparation method for the coating for shielding household electrical appliance electromagnetic radiation, comprises the following steps：
（1）By weight ratio, emulsion is put into reactor, under 300-500r/min rotating speeds, input defoamer, coupling agent,
Thickener coalescents are uniformly dispersed, and obtain mixed liquor A；
（2）To step（1）Input inhales ripple filler, CNT, epoxy resin, cenosphere in obtained mixed liquor A, in 600-
Under 800r/min rotating speeds, disperse 20-40min, obtain mixed liquor C；
（3）To step（2）Nano-sized iron oxide, nano metal nickel powder, nanometer silicon carbide, zinc oxide are put into obtained mixed liquor C
Whisker, under 400-500r/min rotating speeds, disperse 30-50min, described shielding man is then produced with 80-120 mesh filter-cloth filterings
The coating of electrical appliance electromagnetic radiation.
Compared with prior art, the present invention has following beneficial effect：The present invention, which provides one kind, can shield household electric
Device work, using the coating of caused electromagnetic radiation, electrical equipment can be eliminated by being coated onto on various household electrical appliance when using
Caused electromagnetic radiation, eliminates the harm that electromagnetic radiation is brought, and concrete condition is as follows：
（1）The coating of the shielding household electrical appliance electromagnetic radiation of the present invention is using suction ripple filler, CNT, cenosphere, nanometer
Iron oxide, nano metal nickel powder, nanometer silicon carbide, ZnOw etc. are used as anti-electromagnetic radiation main material, to electro-magnetic wave absorption
Rate is high, and absorption band is wide, can effectively eliminate caused all kinds of electromagnetic radiation during household electrical appliance use；
（2）The coating of the shielding household electrical appliance electromagnetic radiation of the present invention, the feature of environmental protection is good, and smell is low, human body and environment is influenceed small
And cost is cheap；
（3）The preparation method of the coating of the shielding household electrical appliance electromagnetic radiation of the present invention is simple, and is easy to construct, and has preferable
Application prospect.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.These embodiments are merely to illustrate the present invention and not had to
In limitation the scope of the present invention.
Embodiment 1
A kind of coating for shielding household electrical appliance electromagnetic radiation, include the component of following weight proportion：50 parts of polymer emulsion, inhale ripple
25 parts of filler, 20 parts of CNT, 15 parts of epoxy resin, 10 parts of cenosphere, 10 parts of nano-sized iron oxide, nano metal nickel powder 5
Part, 5.5 parts of nanometer silicon carbide, 3 parts of ZnOw, 1.7 parts of defoamer, 0.5 part of coupling agent, 0.3 part of thickener and film forming help
0.6 part of agent.
Wherein, the polymer emulsion be pure acrylic latex, vinyl acetate-acrylic copolymer emulsion or styrene-
Acrylate copolymer emulsion.
Wherein, the ripple filler of inhaling is one kind in conductive black, graphite, carboxyl iron or ferrite, and its granularity 150
Mesh, purity are more than 99.5%.
Wherein, the defoamer is colourless silicone oil, polyethylene glycol or polypropylene glycol.
Wherein, the coupling agent is one kind in titanate coupling agent or silane coupler.
Wherein, the thickener is one kind in hydroxyethyl cellulose, hydroxymethyl cellulose or hydroxypropyl cellulose.
Wherein, the coalescents are alcohol ester 12.
A kind of preparation method for the coating for shielding household electrical appliance electromagnetic radiation, comprises the following steps：
（1）By weight ratio, emulsion is put into reactor, under 400r/min rotating speeds, input defoamer, coupling agent, thickening
Agent coalescents are uniformly dispersed, and obtain mixed liquor A；
（2）To step（1）Input inhales ripple filler, CNT, epoxy resin, cenosphere in obtained mixed liquor A,
Under 700r/min rotating speeds, disperse 30min, obtain mixed liquor C；
（3）To step（2）Nano-sized iron oxide, nano metal nickel powder, nanometer silicon carbide, zinc oxide are put into obtained mixed liquor C
Whisker, under 450r/min rotating speeds, disperse 40min, described shielding household electrical appliance electromagnetism is then produced with 100 mesh filter-cloth filterings
The coating of radiation.
Embodiment 2
A kind of coating for shielding household electrical appliance electromagnetic radiation, include the component of following weight proportion：40 parts of polymer emulsion, inhale ripple
20 parts of filler, 15 parts of CNT, 10 parts of epoxy resin, 6 parts of cenosphere, 5 parts of nano-sized iron oxide, 2 parts of nano metal nickel powder,
3 parts of nanometer silicon carbide, 1 part of ZnOw, 0.5 part of defoamer, 0.2 part of coupling agent, 0.1 part of thickener and coalescents 0.3
Part.
Wherein, the polymer emulsion be pure acrylic latex, vinyl acetate-acrylic copolymer emulsion or styrene-
Acrylate copolymer emulsion.
Wherein, the ripple filler of inhaling is one kind in conductive black, graphite, carboxyl iron or ferrite, and its granularity 100
Mesh, purity are more than 99.5%.
Wherein, the defoamer is colourless silicone oil, polyethylene glycol or polypropylene glycol.
Wherein, the coupling agent is one kind in titanate coupling agent or silane coupler.
Wherein, the thickener is one kind in hydroxyethyl cellulose, hydroxymethyl cellulose or hydroxypropyl cellulose.
Wherein, the coalescents are alcohol ester 12.
A kind of preparation method for the coating for shielding household electrical appliance electromagnetic radiation, comprises the following steps：
（1）By weight ratio, emulsion is put into reactor, under 400r/min rotating speeds, input defoamer, coupling agent, thickening
Agent coalescents are uniformly dispersed, and obtain mixed liquor A；
（2）To step（1）Input inhales ripple filler, CNT, epoxy resin, cenosphere in obtained mixed liquor A,
Under 600r/min rotating speeds, disperse 20min, obtain mixed liquor C；
（3）To step（2）Nano-sized iron oxide, nano metal nickel powder, nanometer silicon carbide, zinc oxide are put into obtained mixed liquor C
Whisker, under 400r/min rotating speeds, disperse 30min, described shielding household electrical appliance electromagnetism is then produced with 80 mesh filter-cloth filterings
The coating of radiation.
Embodiment 3
A kind of coating for shielding household electrical appliance electromagnetic radiation, include the component of following weight proportion：60 parts of polymer emulsion, inhale ripple
30 parts of filler, 25 parts of CNT, 20 parts of epoxy resin, 15 parts of cenosphere, 15 parts of nano-sized iron oxide, nano metal nickel powder 8
Part, 8 parts of nanometer silicon carbide, 5 parts of ZnOw, 3 parts of defoamer, 0.8 part of coupling agent, 0.5 part of thickener and coalescents 0.8
Part.
Wherein, the polymer emulsion be pure acrylic latex, vinyl acetate-acrylic copolymer emulsion or styrene-
Acrylate copolymer emulsion.
Wherein, the ripple filler of inhaling is one kind in conductive black, graphite, carboxyl iron or ferrite, and its granularity 200
Mesh, purity are more than 99.5%.
Wherein, the defoamer is colourless silicone oil, polyethylene glycol or polypropylene glycol.
Wherein, the coupling agent is one kind in titanate coupling agent or silane coupler.
Wherein, the thickener is one kind in hydroxyethyl cellulose, hydroxymethyl cellulose or hydroxypropyl cellulose.
Wherein, the coalescents are alcohol ester 12.
A kind of preparation method for the coating for shielding household electrical appliance electromagnetic radiation, comprises the following steps：
（1）By weight ratio, emulsion is put into reactor, under 500r/min rotating speeds, input defoamer, coupling agent, thickening
Agent coalescents are uniformly dispersed, and obtain mixed liquor A；
（2）To step（1）Input inhales ripple filler, CNT, epoxy resin, cenosphere in obtained mixed liquor A,
Under 800r/min rotating speeds, disperse 40min, obtain mixed liquor C；
（3）To step（2）Nano-sized iron oxide, nano metal nickel powder, nanometer silicon carbide, zinc oxide are put into obtained mixed liquor C
Whisker, under 500r/min rotating speeds, disperse 50min, described shielding household electrical appliance electromagnetism is then produced with 120 mesh filter-cloth filterings
The coating of radiation.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of coating for shielding household electrical appliance electromagnetic radiation, it is characterised in that include the component of following weight proportion：Polymer
Emulsion 40-60 parts, inhale ripple filler 20-30 parts, CNT 15-25 parts, epoxy resin 10-20 parts, cenosphere 6-15 parts, receive
Rice iron oxide 5-15 parts, nano metal nickel powder 2-8 parts, nanometer silicon carbide 3-8 parts, ZnOw 1-5 parts, defoamer 0.5-3
Part, coupling agent 0.2-0.8 parts, thickener 0.1-0.5 parts and coalescents 0.3-0.8 parts.
2. the coating of shielding household electrical appliance electromagnetic radiation according to claim 1, it is characterised in that the polymer emulsion
50 parts, inhale 25 parts of ripple filler, 20 parts of CNT, 15 parts of epoxy resin, 10 parts of cenosphere, nano-sized iron oxide 10 part, nanometer
5 parts of metal nickel powder, 5.5 parts of nanometer silicon carbide, 3 parts of ZnOw, 1.7 parts of defoamer, 0.5 part of coupling agent, 0.3 part of thickener
With 0.6 part of coalescents.
3. the coating of shielding household electrical appliance electromagnetic radiation according to claim 1, it is characterised in that the polymer emulsion
For pure acrylic latex, vinyl acetate-acrylic copolymer emulsion or interpolymer latex of polystyrene and acrylic ester.
4. it is according to claim 1 shielding household electrical appliance electromagnetic radiation coating, it is characterised in that it is described suction ripple filler be
One kind in conductive black, graphite, carboxyl iron or ferrite, and its granularity 100-200 mesh, purity are more than 99.5%.
5. the coating of shielding household electrical appliance electromagnetic radiation according to claim 1, it is characterised in that the defoamer is nothing
Color silicone oil, polyethylene glycol or polypropylene glycol.
6. the coating of shielding household electrical appliance electromagnetic radiation according to claim 1, it is characterised in that the coupling agent is titanium
One kind in acid esters coupling agent or silane coupler.
7. the coating of shielding household electrical appliance electromagnetic radiation according to claim 1, it is characterised in that the thickener is hydroxyl
One kind in ethyl cellulose, hydroxymethyl cellulose or hydroxypropyl cellulose.
8. the coating of shielding household electrical appliance electromagnetic radiation according to claim 1, it is characterised in that the coalescents are
Alcohol ester 12.
9. a kind of preparation method of the coating of shielding household electrical appliance electromagnetic radiation according to claim any one of 1-8, its
It is characterised by, comprises the following steps：
（1）By weight ratio, emulsion is put into reactor, under 300-500r/min rotating speeds, input defoamer, coupling agent,
Thickener coalescents are uniformly dispersed, and obtain mixed liquor A；
（2）To step（1）Input inhales ripple filler, CNT, epoxy resin, cenosphere in obtained mixed liquor A, in 600-
Under 800r/min rotating speeds, disperse 20-40min, obtain mixed liquor C；
（3）To step（2）Nano-sized iron oxide, nano metal nickel powder, nanometer silicon carbide, zinc oxide are put into obtained mixed liquor C
Whisker, under 400-500r/min rotating speeds, disperse 30-50min, described shielding man is then produced with 80-120 mesh filter-cloth filterings
The coating of electrical appliance electromagnetic radiation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710652287.XA CN107384093A (en) | 2017-08-02 | 2017-08-02 | A kind of coating for shielding household electrical appliance electromagnetic radiation and preparation method thereof |
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| CN201710652287.XA CN107384093A (en) | 2017-08-02 | 2017-08-02 | A kind of coating for shielding household electrical appliance electromagnetic radiation and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370341A (en) * | 2018-11-20 | 2019-02-22 | 南通蛇类治疗研究所 | Anti electromagnetic wave nano shielding coating |
| CN109382297A (en) * | 2018-10-17 | 2019-02-26 | 苏州扬子江新型材料股份有限公司 | Dirt-resistant stealth Coil Coating Products and preparation method thereof |
| CN115928452A (en) * | 2022-11-23 | 2023-04-07 | 山西鑫宏宝汽车用品有限公司 | Solvent-free polyurethane leather for automobile foot pad, preparation method of solvent-free polyurethane leather and automobile foot pad |
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| CN115928452A (en) * | 2022-11-23 | 2023-04-07 | 山西鑫宏宝汽车用品有限公司 | Solvent-free polyurethane leather for automobile foot pad, preparation method of solvent-free polyurethane leather and automobile foot pad |
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