CN109513586A - A kind of electrostatic coating method of plastic-coated steel - Google Patents
A kind of electrostatic coating method of plastic-coated steel Download PDFInfo
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- CN109513586A CN109513586A CN201811427875.4A CN201811427875A CN109513586A CN 109513586 A CN109513586 A CN 109513586A CN 201811427875 A CN201811427875 A CN 201811427875A CN 109513586 A CN109513586 A CN 109513586A
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- plastic
- coated steel
- base tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0426—Cooling with air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
- B05D7/26—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/40—Single-purpose machines or devices for grinding tubes internally
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention is suitable for plastic-coated steel production technical field, provides a kind of electrostatic coating method of plastic-coated steel, obtains preheating base tube after including the following steps: pretreatment；Preheating base tube is subjected to electrostatic spraying, obtains level-one plastic-coated steel；Spray voltage is 55~85kV, and spraying air pressure is 0.3~0.6MPa, and spraying current is 19~31 μ A；In powdery paints used in spraying process, thermosetting resin dosage is 35~55 parts, and hardener dose is 9~20 parts, and amount of pigment is 3.5~6 parts, and amount of filler is 20~30 parts, and auxiliary dosage is 15~25 parts；Then level-one plastic-coated steel is subjected to curing process, then carries out quality inspection, obtains finished product plastic-coated steel.Whereby, the plastic-coated steel surface covering that the present invention obtains is uniform, glossiness is good, adhesive force is strong, hardness of paint film is high, frictional force is small, and has excellent wearability and corrosion resistance.
Description
Technical field
The present invention relates to plastic-coated steel production technical fields, and in particular to a kind of electrostatic coating method of plastic-coated steel.
Background technique
Electrostatic spraying is the direction orientation fortune for making electronegative paint particles opposite along electric field using high-pressure electrostatic electric field
It moves, and paint particles is adsorbed on to a kind of spraying method of workpiece surface.
Powdery paints is the solid powdery synthetic resin coating formed with hard resin and pigment, filler and auxiliary agent etc.,
It has the characteristics that solvent-free pollution, 100% film forming, low energy consumption, especially for use in plastic-coated steel technical field, can make plastic-coated
Steel pipe water absorption rate is low, high mechanical strength, coefficient of friction are small, achievees the purpose that long-time service.
Electrostatic powder spraying is exactly the principle using high-pressure electrostatic corona field, makes powdery paints under the action of electrostatic field
It uniformly directionally flies to and forms the uniform bisque of thickness to coating workpiece surface, reheating, which solidifies, is converted into durable film.But
When existing plastic-coated steel electrostatic spraying powder coating, however it remains coating is frivolous uneven, and frictional force is big, wearability and corrosion-resistant
The disadvantages of property is bad.
In summary, the prior art there will naturally be shortcoming in practical applications, it is necessary to be improved.
Summary of the invention
In view of the above technical defects, it the purpose of the present invention is to provide a kind of electrostatic coating method of plastic-coated steel, obtains
Plastic-coated steel surface covering it is uniform, glossiness is good, adhesive force is strong, hardness of paint film is high, frictional force is small, and with excellent resistance to
Mill property and corrosion resistance.
To achieve the goals above, the present invention provides a kind of electrostatic coating method of plastic-coated steel, includes the following steps:
Step 1 pretreatment
Grinding process is carried out to base tube, is then preheated, preheating base tube is obtained.
Step 2 electrostatic spraying
After the preheating base tube is cooled to 150~180 DEG C, it is sprayed using electrostatic painting process, spraying is completed
Level-one plastic-coated steel is obtained later；
Spray voltage is 55~85kV, and spraying air pressure is 0.3~0.6MPa, and spraying current is 19~31 μ A；
Powdery paints used in spraying process includes thermosetting resin, curing agent, pigment, filler and auxiliary agent；Wherein, institute
Stating thermosetting resin dosage is 35~55 parts, and hardener dose is 9~20 parts, and amount of pigment is 3.5~6 parts, and amount of filler is
20~30 parts, auxiliary dosage is 15~25 parts；
The thermosetting resin is epoxy resin；The curing agent is the mixing of hydroxyalkyl amide and boron trifluoride complex
Object, the pigment are titanium dioxide.
Step 3 solidification, quality inspection
The level-one plastic-coated steel is subjected to curing process, quality inspection is then carried out, obtains finished product plastic-coated steel.
The electrostatic coating method of a kind of plastic-coated steel according to the present invention, in the step 2, used in spraying process
The muzzle of spray gun is 15~20cm at a distance from the preheating base tube surface.
A kind of electrostatic coating method of plastic-coated steel according to the present invention, the muzzle and the angle for preheating base tube are
85~95 degree.
A kind of electrostatic coating method of plastic-coated steel according to the present invention, the particle size range of the powdery paints are 35~65
μm。
A kind of electrostatic coating method of plastic-coated steel according to the present invention, the grinding process in the step 1 include as follows
Step:
A carries out polishing deburring processing to the inner surface of the base tube, and the corner angle on the base tube surface are not less than 2mm's
Fillet, the weld seam of the base tube are the circular arc not less than 5mm；
B carries out blasting treatment to the outer surface of the base tube, and the surface roughness of the base tube is 40~100 μ after processing
M, derusting grade are Sa2.5 grades or more；
Grinding process obtains pretreatment base tube after completing.
The electrostatic coating method of a kind of plastic-coated steel according to the present invention, in the step 1, to the pretreatment base tube
It is preheated, preheating condition is 100~275 DEG C adjustable, and preheating obtains preheating base tube after completing.
A kind of electrostatic coating method of plastic-coated steel according to the present invention, the solidification processing method in the step 3 include
Convection current, infra-red radiation and convection current and infra-red radiation are combined.
A kind of electrostatic coating method of plastic-coated steel according to the present invention, the solidification processing method are convection current and infrared spoke
Penetrate combination, curing process condition are as follows: heating temperature is 140~220 DEG C, and total curing time is 10~25min；Curing process is completed
After obtain second level plastic-coated steel.
A kind of electrostatic coating method of plastic-coated steel according to the present invention, to the coating layer thickness of the second level plastic-coated steel into
Row quality inspection, the inner coating thickness range of second level plastic-coated steel are 250~500 μm, and external coating thickness range is 150~300 μm.
A kind of electrostatic coating method of plastic-coated steel according to the present invention, the inner coating of the second level plastic-coated steel with a thickness of
300~400 μm, external coating is with a thickness of 200~250 μm.
The invention has the benefit that
1, the present invention, which passes through, rationally controls the technological parameters such as electrostatic spraying pressure, electrostatic spraying electric current, electrostatic spraying air pressure,
Simultaneously use reasonable solidification temperature and time, make obtain plastic-coated steel surface covering it is uniform, glossiness is good, adhesive force is strong.
2, rationally, plastic-coated steel is not easy to foaming in spraying process, hardness of paint film for the selected powdery paints proportion of the present invention
Height, and there is excellent wearability and corrosion resistance.
3, the frictional force of plastic-coated steel produced by the present invention is small, and coefficient of friction is 0.03~0.08；The hardness of coating is big, firmly
Degree is 26.9~28.5；Wearability is good, and wearability is 90~97；Corrosion resistance is lasting, and corrosion resistance is 2834~3156h.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
The present invention provides a kind of electrostatic coating methods of plastic-coated steel, include the following steps:
Step 1 pretreatment
A carries out polishing deburring processing to the inner surface of base tube, and the corner angle on base tube surface are the fillet not less than 2mm, weldering
Seam is the circular arc not less than 5mm；
B carries out blasting treatment to the outer surface of base tube, and the surface roughness of base tube is 40~100 μm after processing, derusting etc.
Grade is Sa2.5 grades or more；Processing obtains pretreatment base tube after completing.
Since galvanized pipe has stronger corrosion resistance, as a preferred solution, the base tube in the present invention
For galvanized pipe.
Base tube, which carries out pretreatment, can guarantee that coating has good adhesive force, after plastic-coated steel is made, can be improved anti-
The service life of rotten coating.
Step 2 preheating
Pretreatment base tube is preheated, preheating drying tunnel temperature is 100~275 DEG C adjustable, and preheating obtains pre- after completing
Hot radical pipe.Base tube by preheating can melt the powdery paints for being sprayed onto its surface, to form uniform painting plastic film.
Under normal circumstances, base tube surface also has one layer of coating, and to improve the performance of base tube, temperature is excessively high to will affect plating
The quality of layer, while coating layer being made the phenomenon that burning, out-of-flatness occur；Temperature is too low to make coating layer rough surface, adhesive force
Decline, coating layer is thin or even does not apply, and therefore, preheating temperature needs strict control；Preheating temperature in the present invention is 200 DEG C.
Step 3 electrostatic spraying
After preheating base tube is cooled to 150~180 DEG C, preheating base tube is sprayed using electrostatic painting process, has been sprayed
At obtaining level-one plastic-coated steel later；Spray voltage is 55~85kV, and spraying air pressure is 0.3~0.6MPa, spraying current 19
~31 μ A, compressed air used in spraying process need to be handled through cooling driers, remove the You Heshui in compressed air；
The muzzle of spray gun used in spraying process is 15~20cm at a distance from preheating base tube surface；Muzzle and pre- hot radical
The angle of pipe is 85~95 degree.
The particle size range of powdery paints used in spraying process is 35~65 μm；Powdery paints include thermosetting resin,
Curing agent, pigment, filler and auxiliary agent, wherein thermosetting resin dosage is 35~55 parts, and hardener dose is 9~20 parts, pigment
Dosage is 3.5~6 parts, and amount of filler is 20~30 parts, and auxiliary dosage is 15~25 parts.
Thermosetting resin is epoxy resin；Curing agent is the mixture of hydroxyalkyl amide and boron trifluoride complex, hydroxyl alkane
The weight ratio of base amide and boron trifluoride complex is 2~3:1；Pigment is titanium dioxide；Filler be ceramic microbead, glass microballoon,
One or more of mica powder, aluminium powder, stainless steel powder, cadmium powder, silica, barium sulfate；Auxiliary agent is levelling agent, fire retardant,
Degasser, curing accelerator, antioxidant, one or more of defoaming agent.
Step 4 solidification
Level-one plastic-coated steel is solidified, curing method includes: that convection current, infra-red radiation, convection current and infra-red radiation are combined,
For the present invention using curing method associated with convection current and infra-red radiation, heating temperature is 140~220 DEG C, total curing time is 10~
25min；Taking-up carries out air-cooled or air-cooled after having solidified, and temperature is down to 60~80 DEG C, obtains second level plastic-coated steel.
Step 5 passivation
Processing is passivated to the outer surface of second level plastic-coated steel, the reaction was continued to prevent coating with external environment, to two
Grade plastic-coated steel plays a protective role.
Step 6 quality inspection
A second level plastic-coated steel surface anticorrosion coating is smooth, and color is uniform, and pore-free, holiday or sagging defect, surface do not have yet
The phenomenon that burning；
B measures the coating layer thickness of second level plastic-coated steel；The inner coating thickness range of second level plastic-coated steel be 250~
500 μm, external coating thickness range is 150~300 μm, in the present invention, the inner coating of second level plastic-coated steel with a thickness of 300~
400 μm, external coating is with a thickness of 200~250 μm；Finished product plastic-coated steel is obtained after quality inspection is qualified.
The measurement of coating layer thickness uses magnetic thickness tester or sonigauge.
To obtain preferred forms, following several embodiments are arranged in the present invention；Following embodiment is only listed and above-mentioned step
Different parts, identical content are no longer listed in rapid.
Embodiment 1
Spray voltage is 78kV, and spraying air pressure is 0.48MPa, and spraying current is 29 μ A；
The thermosetting resin dosage is 48 parts, and hardener dose is 12 parts, and amount of pigment is 4.9 parts, and amount of filler is
25 parts, auxiliary dosage is 23 parts.
Embodiment 2
Spray voltage is 62kV, and spraying air pressure is 0.39MPa, and spraying current is 19 μ A；
The thermosetting resin dosage is 35 parts, and hardener dose is 19 parts, and amount of pigment is 5.3 parts, and amount of filler is
26 parts, auxiliary dosage is 21 parts.
Embodiment 3
Spray voltage is 71kV, and spraying air pressure is 0.46MPa, and spraying current is 30 μ A；
The thermosetting resin dosage is 49 parts, and hardener dose is 9 parts, and amount of pigment is 4.5 parts, amount of filler 23
Part, auxiliary dosage is 18 parts.
The implementation procedure of other embodiments repeats no more, and the other data that part is not shown of each embodiment are shown in Table one.Meanwhile
Quality inspection and performance test are carried out to the plastic-coated steel that each embodiment obtains, the results are shown in Table two.
The data of each embodiment of table one
Two plastic-coated steel the performance test results of table
Quality inspection is carried out to the plastic-coated steel that above-described embodiment obtains, dumb light color, no gas is presented in plastic-coated steel smooth surface
Hole is also without burning phenomenon；Inner coating is with a thickness of 300~400 μm, and external coating is with a thickness of 200~250 μm.
The plastic-coated steel that above-described embodiment obtains it can be seen from data in table 2 is tested for the property, and plastic-coated steel rubs
Wiping coefficient is 0.03~0.08, and the hardness (GB/T6739-1996) of coating is 26.9~28.5, wearability (GB/T1768-
It 2006) be 90~97, corrosion resistance (GB/T20854-2007) is 2834~3156h.
Illustrate that the plastic-coated steel surface covering in the above way obtained is uniform, glossiness is good, adhesive force is strong, hardness of paint film
Height, and there is excellent wearability and corrosion resistance.
In conclusion the present invention is by rationally controlling the works such as electrostatic spraying pressure, electrostatic spraying electric current, electrostatic spraying air pressure
Skill parameter, at the same use reasonable solidification temperature and time, make obtain plastic-coated steel surface covering it is uniform, glossiness is good, attached
Put forth effort strong；Rationally, plastic-coated steel is not easy to foaming in spraying process, and hardness of paint film is high for the powdery paints proportion that the present invention selectes,
And there is excellent wearability and corrosion resistance；The frictional force of plastic-coated steel produced by the present invention is small, coefficient of friction be 0.03~
0.08；The hardness of coating is big, and hardness is 26.9~28.5；Wearability is good, and wearability is 90~97；Corrosion resistance is lasting, corrosion resistant
Corrosion is 2834~3156h.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of electrostatic coating method of plastic-coated steel, which comprises the steps of:
Step 1 pretreatment
Grinding process is carried out to base tube, is then preheated, preheating base tube is obtained；
Step 2 electrostatic spraying
After the preheating base tube is cooled to 150~180 DEG C, it is sprayed using electrostatic painting process, after spraying is completed
Obtain level-one plastic-coated steel；
Spray voltage is 55~85kV, and spraying air pressure is 0.3~0.6MPa, and spraying current is 19~31 μ A；
Powdery paints used in spraying process includes thermosetting resin, curing agent, pigment, filler and auxiliary agent；Wherein, the heat
Thermosetting resin dosage be 35~55 parts, hardener dose be 9~20 parts, amount of pigment be 3.5~6 parts, amount of filler be 20~
30 parts, auxiliary dosage is 15~25 parts；
The thermosetting resin is epoxy resin；The curing agent is the mixture of hydroxyalkyl amide and boron trifluoride complex,
The pigment is titanium dioxide；
Step 3 solidification, quality inspection
The level-one plastic-coated steel is subjected to curing process, quality inspection is then carried out, obtains finished product plastic-coated steel.
2. a kind of electrostatic coating method of plastic-coated steel according to claim 1, which is characterized in that in the step 2,
The muzzle of spray gun used in spraying process is 15~20cm at a distance from the preheating base tube surface.
3. a kind of electrostatic coating method of plastic-coated steel according to claim 2, which is characterized in that the muzzle with it is described
The angle for preheating base tube is 85~95 degree.
4. a kind of electrostatic coating method of plastic-coated steel according to claim 1, which is characterized in that the powdery paints
Particle size range is 35~65 μm.
5. a kind of electrostatic coating method of plastic-coated steel described in any one according to claim 1~4, which is characterized in that institute
The grinding process stated in step 1 includes the following steps:
A carries out polishing deburring processing to the inner surface of the base tube, and the corner angle on the base tube surface are the circle not less than 2mm
Angle, the weld seam of the base tube are the circular arc not less than 5mm；
B carries out blasting treatment to the outer surface of the base tube, and the surface roughness of the base tube is 40~100 μm after processing, removes
Grade of becoming rusty is Sa2.5 grades or more；
Grinding process obtains pretreatment base tube after completing.
6. a kind of electrostatic coating method of plastic-coated steel according to claim 5, which is characterized in that in the step 1,
The pretreatment base tube is preheated, preheating condition is 100~275 DEG C adjustable, and preheating obtains preheating base tube after completing.
7. a kind of electrostatic coating method of plastic-coated steel described in any one according to claim 1~4, which is characterized in that institute
Stating the solidification processing method in step 3 includes that convection current, infra-red radiation and convection current and infra-red radiation are combined.
8. a kind of electrostatic coating method of plastic-coated steel according to claim 7, which is characterized in that the curing process side
Method is that convection current and infra-red radiation are combined, curing process condition are as follows: and heating temperature is 140~220 DEG C, and total curing time is 10~
25min；Second level plastic-coated steel is obtained after the completion of curing process.
9. a kind of electrostatic coating method of plastic-coated steel according to claim 8, which is characterized in that the second level plastic-coated
The coating layer thickness of steel pipe carries out quality inspection, and the inner coating thickness range of second level plastic-coated steel is 250~500 μm, external coating thickness model
Enclose is 150~300 μm.
10. a kind of electrostatic coating method of plastic-coated steel according to claim 9, which is characterized in that the second level plastic-coated
The inner coating of steel pipe is with a thickness of 300~400 μm, and external coating is with a thickness of 200~250 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427875.4A CN109513586A (en) | 2018-11-27 | 2018-11-27 | A kind of electrostatic coating method of plastic-coated steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811427875.4A CN109513586A (en) | 2018-11-27 | 2018-11-27 | A kind of electrostatic coating method of plastic-coated steel |
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| Publication Number | Publication Date |
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| CN109513586A true CN109513586A (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713487A (en) * | 2022-03-16 | 2022-07-08 | 佛山电器照明股份有限公司 | Spraying process of photocatalyst material and application thereof |
-
2018
- 2018-11-27 CN CN201811427875.4A patent/CN109513586A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713487A (en) * | 2022-03-16 | 2022-07-08 | 佛山电器照明股份有限公司 | Spraying process of photocatalyst material and application thereof |
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Application publication date: 20190326 |