CN215964598U - Automobile bus shell coating layer structure - Google Patents
Automobile bus shell coating layer structure Download PDFInfo
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- CN215964598U CN215964598U CN202121783072.XU CN202121783072U CN215964598U CN 215964598 U CN215964598 U CN 215964598U CN 202121783072 U CN202121783072 U CN 202121783072U CN 215964598 U CN215964598 U CN 215964598U
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Abstract
The utility model discloses a coating layer structure of an automobile bus shell, which comprises an automobile bus shell base layer, wherein a first putty layer is scraped on the bus shell base layer, a first antirust primer layer is sprayed on the first putty layer, a second putty layer is scraped on the first antirust primer layer, a second antirust primer layer is sprayed on the second putty layer, an antirust middle paint layer is sprayed on the second antirust primer layer, a first color paint layer is sprayed on the antirust middle paint layer, a second color paint layer is sprayed on the first color paint layer, a transparent paint layer is sprayed on the second color paint layer, the thicknesses of the first putty layer and the second putty layer are 70-90 mu m, the thicknesses of the first antirust primer layer and the second antirust primer layer are 35-45 mu m, the thickness of the antirust middle paint layer is 55-65 mu m, the thicknesses of the first color paint layer and the second color paint layer are 25-35 mu m, and the thickness of the transparent paint layer is 40-50 mu m. The utility model has the advantages of smooth structure, strong antirust protection effect, difficult color explosion after the colored paint layer is used for a long time, and good weather resistance.
Description
Technical Field
The utility model relates to the technical field of metal surface coating layers, in particular to a coating layer structure of an automobile bus shell.
Background
The automobile bus shell needs to have high strength and rigidity, is usually made of steel frames and steel plates, and has high corrosion resistance and rust resistance on a coating layer structure on the surface of the shell because the automobile bus shell needs to be blown by wind and rain frequently. In the prior art, when an automobile bus shell is coated, a putty layer is usually scraped firstly, then an antirust primer layer is sprayed, and then a colored paint layer is sprayed on the antirust primer layer.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a coating layer structure of the automobile bus shell, which has the advantages of flat structure, strong antirust protection effect, difficult color explosion after a colored paint layer is used for a long time, and good weather resistance according to the defects of the prior art.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides an automobile bus casing application layer structure, includes automobile bus casing basic unit, it has first putty layer to scrape on the bus casing basic unit, the spraying has first anti-rust primer layer on the first putty layer, it has second putty layer to scrape on the first anti-rust primer layer, the spraying has second anti-rust primer layer on the second putty layer, the spraying has anti-rust middle paint layer on the second anti-rust primer layer, the spraying has first paint layer on the anti-rust middle paint layer, the spraying has second paint layer on the first paint layer, the spraying has transparent paint layer on the second paint layer, the thickness of first putty layer is 70-90 mu m, the thickness of first anti-rust primer layer is 35-45 mu m, the thickness of second putty layer is 70-90 mu m, the thickness of second anti-rust primer layer is 35-45 mu m, the thickness of anti-rust middle paint layer is 55-65 mu m, the thickness of the first colored paint layer is 25-35 mu m, the thickness of the second colored paint layer is 25-35 mu m, and the thickness of the transparent paint layer is 40-50 mu m.
Preferably, the thickness of first putty layer is 80 μm, the thickness of first anti-rust primer layer is 40 μm, the thickness of second putty layer is 80 μm, the thickness of second anti-rust primer layer is 40 μm, the thickness of anti-rust intermediate coat layer is 60 μm, the thickness of first colored paint layer is 30 μm, the thickness of second colored paint layer is 30 μm, the thickness of clear paint layer is 45 μm.
Preferably, the first putty layer and the second putty layer are respectively a water-based epoxy putty layer.
Preferably, the first and second rust inhibiting primer layers are each a waterborne epoxy primer layer.
Preferably, the antirust middle paint layer is a water-based epoxy zinc-rich middle paint layer.
Preferably, the first colored paint layer is an aqueous polyurethane base colored paint layer, the second colored paint layer is an aqueous polyurethane pearlescent paint layer, and the transparent paint layer is an aqueous polyurethane transparent paint layer.
The utility model has the beneficial effects that: the automobile bus shell coating structure comprises a base layer, a first putty layer, a first antirust primer layer, a second putty layer, a second antirust primer layer and an antirust middle paint layer, wherein the base layer is coated with the first putty layer; and secondly, because the first colored paint layer is sprayed on the antirust middle paint layer, the second colored paint layer is sprayed on the first colored paint layer, and the transparent paint layer is sprayed on the second colored paint layer, so that the good color visual effect can be ensured by the two colored paint layers, and the transparent paint layer covered by the outer layer can protect the color paint layer from being exploded and has good weather resistance after being used for a long time.
Drawings
Fig. 1 is a hierarchical structure diagram of a coating layer structure of an automobile bus shell.
In the figure: 1. a base layer of an automobile bus shell; 2. a first putty layer; 3. a first rust inhibitive primer layer; 4. a second putty layer; 5. a second rust inhibiting primer layer; 6. an anti-rust intermediate paint layer; 7. a first pigmented paint layer; 8. a second paint layer; 9. and a transparent paint layer.
Detailed Description
The structural and operational principles of the present invention are explained in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model is an automobile bus shell coating layer structure, which comprises an automobile bus shell base layer 1, wherein a first putty layer 2 is scraped on the bus shell base layer 1, a first antirust primer layer 3 is sprayed on the first putty layer 2, a second putty layer 4 is scraped on the first antirust primer layer 3, a second antirust primer layer 5 is sprayed on the second putty layer 4, an antirust middle paint layer 6 is sprayed on the second antirust primer layer 5, a first colored paint layer 7 is sprayed on the antirust middle paint layer 6, a second colored paint layer 8 is sprayed on the first colored paint layer 7, and a transparent paint layer 9 is sprayed on the second colored paint layer 8; the thickness of the first putty layer 2 is 70-90 μm, preferably 80 μm; the thickness of the first anticorrosive primer layer 3 is 35 to 45 μm, preferably 40 μm; the thickness of the second putty layer 4 is 70-90 μm, preferably 80 μm; the thickness of the second anticorrosive primer layer 5 is 35 to 45 μm, preferably 40 μm; the thickness of the antirust middle paint layer 6 is 55-65 μm, preferably 60 μm; the thickness of the first colored paint layer 7 is 25-35 μm, preferably 30 μm; the thickness of the second colour paint layer 8 is 25-35 μm, preferably 30 μm; the thickness of the transparent lacquer layer 9 is 40-50 μm, preferably 45 μm.
The first putty layer 2 and the second putty layer 4 are respectively water-based epoxy putty layers. The formula of the water-based epoxy putty layer comprises water-based epoxy resin, deionized water, calcined kaolin, propylene glycol, heavy calcium carbonate, titanium dioxide, a defoaming agent, a thickening agent and a film forming agent, wherein the water-based epoxy putty layer comprises the following components in parts by weight: 38 parts of waterborne epoxy resin, 7 parts of deionized water, 24 parts of calcined kaolin, 2 parts of propylene glycol, 8 parts of heavy calcium carbonate, 10 parts of titanium dioxide, 1 part of defoaming agent, 0.5 part of thickening agent and 1 part of film forming agent.
The first and second rust inhibiting primer layers 3 and 5 are each a water-based epoxy primer layer. The formula of the water-based epoxy primer layer comprises water-based epoxy emulsion, deionized water, a water-based dispersing agent, a water-based defoaming agent, silicon dioxide, zinc tripolyphosphate, aluminum tripolyphosphate, natural barium sulfate, bentonite, titanium dioxide, yellow powder, an anti-flash rust agent, a base material wetting agent, a polyurethane thickener and a curing agent, wherein the water-based epoxy emulsion comprises the following components in parts by weight: 40 parts of water-based epoxy emulsion, 13.5 parts of deionized water, 0.5 part of water-based dispersant, 0.2 part of water-based defoamer, 0.6 part of silicon dioxide, 3 parts of zinc tripolyphosphate, 3 parts of aluminum tripolyphosphate, 20 parts of natural barium sulfate, 0.2 part of bentonite, 8 parts of titanium dioxide, 1.5 parts of yellow powder, 1.5 parts of flash rust inhibitor, 0.2 part of base material wetting agent, 1 part of polyurethane thickener and 10 parts of curing agent.
The antirust middle paint layer 6 is a water-based epoxy zinc-rich middle paint layer. The formula of the water-based epoxy zinc-rich intermediate paint layer comprises epoxy resin, a dispersing agent, polyamide wax, an anti-flash rust agent, ethylene glycol monobutyl ether, ethylene glycol methyl ether, a water-based dispersing agent, a curing agent, a silane coupling agent, silicon dioxide, wax powder, a water absorbent and national standard zinc powder, wherein the weight fractions are respectively as follows: 22.25 parts of epoxy resin, 0.2 part of dispersant, 0.2 part of polyamide wax, 0.5 part of flash rust inhibitor, 3 parts of ethylene glycol monobutyl ether, 2 parts of ethylene glycol methyl ether, 0.2 part of water-based dispersant, 3.8 parts of curing agent, 0.5 part of silane coupling agent, 0.5 part of silicon dioxide, 0.8 part of wax powder, 0.5 part of water absorbent and 65.6 parts of national standard zinc powder.
The first colored paint layer 7 is a water-based polyurethane bottom colored paint layer, the second colored paint layer 8 is a water-based polyurethane pearlescent paint layer, and the transparent paint layer 9 is a water-based polyurethane transparent paint layer. The formula of the waterborne polyurethane base color paint layer comprises waterborne polyurethane, dipropylene glycol methyl ether, propylene glycol methyl ether, ethylene glycol butyl ether, a substrate wetting agent, a waterborne defoamer, deionized water, a polyurethane thickener, a leveling agent, titanium pigment and a waterborne curing agent, wherein the weight fractions are respectively as follows: 70 parts of waterborne polyurethane, 2 parts of dipropylene glycol methyl ether, 2 parts of propylene glycol methyl ether, 1 part of ethylene glycol butyl ether, 0.2 part of base material wetting agent, 0.1 part of waterborne defoamer, 24 parts of deionized water, 0.7 part of polyurethane thickener, 0.1 part of flatting agent, 50 parts of titanium dioxide and 15 parts of waterborne curing agent. The formula of the waterborne polyurethane pearlescent paint layer comprises waterborne polyurethane, dipropylene glycol methyl ether, propylene glycol methyl ether, ethylene glycol butyl ether, a substrate wetting agent, a waterborne defoamer, deionized water, a polyurethane thickener, a flatting agent, pearlescent powder and a waterborne curing agent, wherein the weight fractions are respectively as follows: 70 parts of waterborne polyurethane, 2 parts of dipropylene glycol methyl ether, 2 parts of propylene glycol methyl ether, 1 part of ethylene glycol butyl ether, 0.2 part of base material wetting agent, 0.1 part of waterborne defoamer, 24 parts of deionized water, 0.7 part of polyurethane thickener, 0.1 part of flatting agent, 10 parts of pearl powder and 11 parts of waterborne curing agent. The formula of the waterborne polyurethane transparent paint layer comprises waterborne polyurethane, dipropylene glycol methyl ether, propylene glycol methyl ether, ethylene glycol butyl ether, a substrate wetting agent, a waterborne defoaming agent, deionized water, a polyurethane thickener, a flatting agent and a waterborne curing agent, wherein the weight fractions are respectively as follows: 70 parts of waterborne polyurethane, 2 parts of dipropylene glycol methyl ether, 2 parts of propylene glycol methyl ether, 1 part of ethylene glycol butyl ether, 0.2 part of base material wetting agent, 0.1 part of waterborne defoamer, 24 parts of deionized water, 0.7 part of polyurethane thickener, 0.1 part of flatting agent and 10 parts of waterborne curing agent.
The construction process of the automobile bus shell coating layer structure comprises the following steps:
s1, polishing and grinding a shell base layer of the automobile bus: oil stains, rust stains and stains on the materials are treated;
s2, scraping a first putty layer on the base layer of the automobile bus shell, filling the uneven plate surface, wherein the thickness of the film is 80 microns, and after drying for 2 hours, polishing with 400-mesh abrasive paper to be smooth and seamless;
and S3, spraying a first antirust primer layer, wherein the color is national standard middle ash, and the thickness of the dry film is 40 mu m. Drying for 24 hours at normal temperature;
s4, scraping a second putty layer on the first antirust primer layer, filling the uneven plate surface, wherein the thickness of the film is 80 microns, and after drying for 2 hours, polishing by 400-mesh abrasive paper to be smooth and seamless;
s5, spraying a second antirust primer layer, wherein the color is national standard medium ash, and the thickness of the dry film is 40 mu m. Drying for 12 hours at normal temperature;
s6, spraying an antirust middle paint layer, wherein the thickness of a dry film is 60 microns, and drying for 12 hours at normal temperature;
s7, spraying a first color paint layer, wherein the thickness of a dry film is 30 microns, and drying for 12 hours at normal temperature;
s8, spraying a second color paint layer, wherein the thickness of a dry film is 30 microns, and drying for 12 hours at normal temperature;
s9, spraying a transparent paint layer, wherein the thickness of a dry film is 45 mu m, and drying for 24 hours at normal temperature.
After all the processes are finished, the product is placed for 72 hours in a closed manner, and the product is sampled and checked for reliability test: 1) the adhesive force of a paint film reaches grade 1; 2) the hardness of the paint film is detected, 2 hours, and the test of a Chinese pencil is passed; 3) salt spray resistance test: 2000 hours, pass; 4) and (3) weather resistance test: 1000 hours, the color difference value is 1.0; 5) acid and alkali resistance test: 1 hour, pass; 6) and (3) normal temperature water bubble resistance test: 500 hours, pass; 7) and (3) engine oil resistance test: 1 hour, pass; 8) and (3) high and low temperature testing: plus 60 ℃ and minus 40 ℃, one test cycle is performed for 4 hours, and 12 test cycles are performed in total, and the test cycle is passed.
The above description is only a preferred embodiment of the present invention, and all the minor modifications, equivalent changes and modifications made to the above embodiment according to the technical solution of the present invention are within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a car big bus casing application layer structure which characterized in that: including car big bus shell basic unit, it has first putty layer to scrape on the big bus shell basic unit, the spraying has first anti-rust primer layer on the first putty layer, it has second putty layer to scrape on the first anti-rust primer layer, the spraying has second anti-rust primer layer on the second putty layer, the spraying has anti-rust intermediate coat layer on the second anti-rust primer layer, the spraying has first paint layer on the anti-rust intermediate coat layer, the spraying has second paint layer on the first paint layer, the spraying has transparent paint layer on the second paint layer, the thickness of first putty layer is 70-90 mu m, the thickness of first anti-rust primer layer is 35-45 mu m, the thickness of second putty layer is 70-90 mu m, the thickness of second anti-rust primer layer is 35-45 mu m, the thickness of anti-rust intermediate coat layer is 55-65 mu m, the thickness of first paint layer is 25-35 mu m, the thickness of the second color paint layer is 25-35 μm, and the thickness of the transparent paint layer is 40-50 μm.
2. The automotive bus shell coating layer structure according to claim 1, characterized in that: the thickness of first putty layer is 80 μm, the thickness of first anti-rust primer layer is 40 μm, the thickness of second putty layer is 80 μm, the thickness of second anti-rust primer layer is 40 μm, the thickness of anti-rust intermediate coat layer is 60 μm, the thickness of first colored paint layer is 30 μm, the thickness of second colored paint layer is 30 μm, the thickness of clear paint layer is 45 μm.
3. The automotive bus shell coating layer structure according to claim 1 or 2, characterized in that: the first putty layer and the second putty layer are respectively water-based epoxy putty layers.
4. The automotive bus shell coating layer structure according to claim 1 or 2, characterized in that: the first anti-rust primer layer and the second anti-rust primer layer are respectively aqueous epoxy primer layers.
5. The automotive bus shell coating layer structure according to claim 1 or 2, characterized in that: the antirust middle paint layer is a water-based epoxy zinc-rich middle paint layer.
6. The automotive bus shell coating layer structure according to claim 1 or 2, characterized in that: the first colored paint layer is an aqueous polyurethane base colored paint layer, the second colored paint layer is an aqueous polyurethane pearlescent paint layer, and the transparent paint layer is an aqueous polyurethane transparent paint layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121783072.XU CN215964598U (en) | 2021-08-02 | 2021-08-02 | Automobile bus shell coating layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121783072.XU CN215964598U (en) | 2021-08-02 | 2021-08-02 | Automobile bus shell coating layer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215964598U true CN215964598U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121783072.XU Active CN215964598U (en) | 2021-08-02 | 2021-08-02 | Automobile bus shell coating layer structure |
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| Country | Link |
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| CN (1) | CN215964598U (en) |
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2021
- 2021-08-02 CN CN202121783072.XU patent/CN215964598U/en active Active
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