CN206872721U - A kind of aqueous double-component polyurethane lacquer coat - Google Patents
A kind of aqueous double-component polyurethane lacquer coat Download PDFInfo
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- CN206872721U CN206872721U CN201521036631.5U CN201521036631U CN206872721U CN 206872721 U CN206872721 U CN 206872721U CN 201521036631 U CN201521036631 U CN 201521036631U CN 206872721 U CN206872721 U CN 206872721U
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Abstract
The utility model discloses a kind of aqueous double-component polyurethane lacquer coat, include the first coating film, the second coating film, third layer film and the 4th coating film successively from inside to outside, the thickness difference of first coating film and the second coating film is 05 μm, the thickness of third layer film is more than a coating film thickness thicker in the first coating film and the second coating film, and the thickness of the 4th coating film is more than a coating film thickness thicker in the first coating film and the second coating film.The purpose of this utility model is the performances such as surface effect and outstanding corrosion resistance and the adhesive force for allowing coating to have reached.
Description
Technical field
It the utility model is related to coating structure.The especially coating structure of aqueous double-component polyurethane paint.
Background technology
Currently, energy-saving and environmental protection are the general trends of vehicular traffic development, and even more the great of relation human kind sustainable development is asked
Topic.Body lightening is that automobile reduces fuel consumption and reduces one of most effective measure of discharge.Will to reach body lightening
Ask, car body and the more use aluminum alloy materials of parts are made.Aluminum alloy materials have that density is small, high excellent of intensity, rigidity
Point, but corrosion-resistant and decorative appearance is not high, typically improves the corrosion resistance of aluminium alloy and decorative appearance by spraying method
Property.
The traditional application mode of vehicular traffic carries out application with solvent based coating, but largely has because solvent based coating contains
Malicious hazardous solvent, and it is inflammable and explosive, do not meet the demand for development of national environmental protection application.Water paint product existing defects, still
The deficiency of product can be effectively made up by suitable spraying coating process, is finally reached good surface effect and excellent corrosion resistant
The performances such as corrosion, adhesive force, impact resistance, water paint is free from environmental pollution, meets the environmental protection concept of people, and people to green
The pursuit of color life.
A kind of PVC is disclosed in the patent document that Chinese Patent Application No. is 201420524107.1 and conserves coating knot
Structure, including a PVC bottom plates and the double-component waterborne polyurethane conservation layer that is covered on PVC bottom plates；It is described double-component aqueous
Polyurethane conservation layer is included respectively transversely with longitudinal direction successively coated on the first coating and second on the PVC backplate surfaces
Coating.Compared with prior art, the utility model PVC conserve coating structure its by setting two layers pair on PVC bottom plates
The coating of component waterborne polyurethane（That is first coating, second coating）, it can improve the reliability on floor, remove what is frequently conserved from
Trouble and unnecessary cost, also improve the dicoration on floor.But for aqueous polyurethane, dope viscosity is low, coating
Surface tension difference is small, therefore, by once spraying or when the thickness of secondary spraying and not every layer of coating is larger, it is impossible to fully profit
Wet, levelling, it is difficult to avoid the disadvantages such as film shrinkage cavity.
The content of the invention
The purpose of this utility model is the property such as surface effect and outstanding corrosion resistance and the adhesive force for allowing coating to have reached
Energy.
To reach above-mentioned purpose, a kind of aqueous double-component polyurethane lacquer coat, include successively from inside to outside the first coating film,
The thickness difference of second coating film, third layer film and the 4th coating film, the first coating film and the second coating film be 0-5 μm, the 3rd
The thickness of coating film is more than a coating film thickness thicker in the first coating film and the second coating film, and the thickness of the 4th coating film is big
A thicker coating film thickness in the first coating film and the second coating film.
Further, the thickness of the first coating film is 10-15 μm, and the thickness of the second coating film is 10-15 μm, and third layer applies
The thickness of film is 20-25 μm, and the thickness of the 4th coating film is 20-25 μm.
Further, the gross thickness of coating is 60-80 μm.
Further, the first coating film is first layer sprayed coating film, and the second coating film is second layer sprayed coating film, third layer
Film is third layer sprayed coating film, and the 4th coating film is the 4th layer of sprayed coating film.
The beneficial effects of the utility model are：Coating of the present utility model is compared with usual spray coating, usual spray
Coating is made up of 1-2 layers, number of plies increase, and so, in the case where total coating thickness is constant, the thickness per coating film is small, and
Successively spray, be avoided that-reaction of NCO and the water possibility and sagging phenomenon that produce CO2 and cause chemistry to bubble.It is special
It is not that the thickness of the first coating film is less than the thickness of third layer film or the 4th coating film, the thickness of the second coating film is less than the 3rd
The thickness of coating film or the 4th coating film, so, the first coating film and the second coating film be more avoided that-NCO produces with water reaction
The possibility and sagging phenomenon given birth to CO2 and cause chemistry to bubble.
Coated coating viscosity in the utility model is low, generally 16-25S（Apply -4 glasss）, dope viscosity is lower, coating table
Face Tension Difference is smaller, because there is provided multilayer film, therefore, each time spraying can be soaked fully, levelling, effectively prevent painting
The disadvantages such as film shrinkage cavity, coating is allowed to reach the performances such as good surface effect and outstanding corrosion resistance and adhesive force.Due to first
The thickness of coating film and the second coating film is 10-15 μm, therefore, dodges that the dry time is relatively short, and it is good to dodge dry effect, this
Sample, the spraying of third layer film and the 4th coating film can be carried out in a short time, improves efficiency.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
The utility model is further elaborated with reference to the accompanying drawings and detailed description.
As shown in figure 1, aqueous double-component polyurethane lacquer coat includes the first coating film 1 successively from inside to outside, the second layer applies
Film 2, the coating film 4 of third layer film 3 and the 4th.
First coating film 1 is first layer sprayed coating film, and the second coating film 2 is second layer sprayed coating film, and third layer film 3 is
Third layer sprayed coating film, the 4th coating film 4 are the 4th layer of sprayed coating film.
The thickness of first coating film 1 is 10-15 μm, and the thickness of the second coating film 2 is 10-15 μm, the thickness of third layer film 3
Spend for 20-25 μm, the thickness of the 4th coating film 4 is 20-25 μm.The gross thickness of coating is 60-80 μm.
The thickness difference of first coating film 1 and the second coating film 2 can be 0-5 μm, and the thickness of third layer film 3 is more than first
A thicker coating film thickness in the coating film 2 of coating film 1 and second, the thickness of the 4th coating film 4 are more than the first coating film 1 and the
A thicker coating film thickness in two coating films 2.
Compared with usual spray coating, usual spray coating is made up of coating of the present utility model 1-2 layers, and the number of plies increases
Add, so, in the case where total coating thickness is constant, the thickness per coating film is small, and successively sprays, be avoided that-
The possibility and sagging phenomenon that NCO produces CO2 and cause chemistry to bubble with water reaction.The thickness of particularly the first coating film is less than
The thickness of third layer film or the 4th coating film, the thickness of the second coating film are less than the thickness of third layer film or the 4th coating film
Degree, so, the first coating film and the second coating film be more avoided that-NCO produces CO2 with water reaction and causes what chemistry bubbled
Possibility and sagging phenomenon.
Coated coating viscosity in the utility model is low, generally 16-25S（Apply -4 glasss）, dope viscosity is lower, coating table
Face Tension Difference is smaller, because there is provided multilayer film, therefore, each time spraying can be soaked fully, levelling, effectively prevent painting
The disadvantages such as film shrinkage cavity, coating is allowed to reach the performances such as good surface effect and outstanding corrosion resistance and adhesive force.Due to first
The thickness of coating film and the second coating film is 10-15 μm, therefore, dodges that the dry time is relatively short, and it is good to dodge dry effect, this
Sample, the spraying of third layer film and the 4th coating film can be carried out in a short time, improves efficiency.
Embodiment one.
A kind of spraying method of aqueous double-component polyurethane paint, is comprised the following steps that：
（1）Paint is mixed by a certain percentage with curing agent, glued the aqueous double-component polyurethane paint of construction with deionized water
Degree is adjusted to 16 seconds（Apply -4 glasss）, aqueous double-component polyurethane paint is activated into half an hour before spraying.
（2）Bore is used to be sprayed for 1.5mm spray gun, spray pressure is set as 4bar.
（3）The coating film of spray gun spraying first, dodge dry 15min, coating thickness（Dry film）10-15um.
（4）The coating film of spray gun spraying second, mending-leakage is carried out emphatically, dodge dry 15min, coating thickness（Dry film）10-15um.
（5）Spray gun spraying third layer film, coating thickness is added, dodge dry 15min, coating thickness 20-25um（Dry film）.
（6）The coating film of spray gun spraying the 4th, coating thickness 20-25um（Dry film）.
（7）Baking oven 2 hours of 60 DEG C of dryings, reach and do solid work.
Embodiment two.
A kind of spraying method of aqueous double-component polyurethane paint, is comprised the following steps that：
（1）Paint is mixed by a certain percentage with curing agent, glued the aqueous double-component polyurethane paint of construction with deionized water
Degree is adjusted to 20 seconds（Apply -4 glasss）, aqueous double-component polyurethane paint is activated into half an hour before spraying.
（2）Bore is used to be sprayed for 1.5mm spray gun, spray pressure is set as 5bar.
（3）The coating film of spray gun spraying first, dodge dry 10min, coating thickness（Dry film）10-15um.
（4）The coating film of spray gun spraying second, mending-leakage is carried out emphatically, dodge dry 10min, coating thickness（Dry film 10-15um.
（5）Spray gun spraying third layer film, coating thickness is added, dodge dry 12min, coating thickness 20-25um（Dry film）.
（6）The coating film of spray gun spraying the 4th, coating thickness 20-25um（Dry film）.
（7）Baking oven 2 hours of 60 DEG C of dryings, reach and do solid work.
Embodiment three.
A kind of spraying method of aqueous double-component polyurethane paint, is comprised the following steps that：
（1）Paint is mixed by a certain percentage with curing agent, glued the aqueous double-component polyurethane paint of construction with deionized water
Degree is adjusted to 25 seconds（Apply -4 glasss）, aqueous double-component polyurethane paint is activated into half an hour before spraying.
（2）Bore is used to be sprayed for 1.5mm spray gun, spray pressure is set as 4-6bar.
（3）The coating film of spray gun spraying first, dodge dry 5min, coating thickness（Dry film）10-15um.
（4）The coating film of spray gun spraying second, mending-leakage is carried out emphatically, dodge dry 5min, coating thickness（Dry film 10-15um.
（5）Spray gun spraying third layer film, coating thickness is added, dodge dry 8min, coating thickness 20-25um（Dry film）.
（6）The coating film of spray gun spraying the 4th, coating thickness 20-25um（Dry film）.
（7）Air drying 24 hours, reaches and does solid work.
Claims (4)
- A kind of 1. aqueous double-component polyurethane lacquer coat, it is characterised in that：Include the first coating film, the second layer successively from inside to outside The thickness difference of film, third layer film and the 4th coating film, the first coating film and the second coating film is 0-5 μm, third layer film Thickness be more than a coating film thickness thicker in the first coating film and the second coating film, the thickness of the 4th coating film is more than first A thicker coating film thickness in coating film and the second coating film.
- 2. aqueous double-component polyurethane lacquer coat according to claim 1, it is characterised in that：The thickness of first coating film is 10-15 μm, the thickness of the second coating film is 10-15 μm, and the thickness of third layer film is 20-25 μm, the thickness of the 4th coating film For 20-25 μm.
- 3. aqueous double-component polyurethane lacquer coat according to claim 1, it is characterised in that：The gross thickness of coating is 60- 80μm。
- 4. aqueous double-component polyurethane lacquer coat according to claim 1, it is characterised in that：First coating film is first layer Sprayed coating film, the second coating film are second layer sprayed coating film, and third layer film is third layer sprayed coating film, and the 4th coating film is the Four layers of sprayed coating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036631.5U CN206872721U (en) | 2015-12-14 | 2015-12-14 | A kind of aqueous double-component polyurethane lacquer coat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036631.5U CN206872721U (en) | 2015-12-14 | 2015-12-14 | A kind of aqueous double-component polyurethane lacquer coat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206872721U true CN206872721U (en) | 2018-01-12 |
Family
ID=61325251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521036631.5U Active CN206872721U (en) | 2015-12-14 | 2015-12-14 | A kind of aqueous double-component polyurethane lacquer coat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206872721U (en) |
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2015
- 2015-12-14 CN CN201521036631.5U patent/CN206872721U/en active Active
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