CN115851053A - Special water-based insulating paint for new energy automobile battery water-cooling plate - Google Patents
Special water-based insulating paint for new energy automobile battery water-cooling plate Download PDFInfo
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- CN115851053A CN115851053A CN202211502693.5A CN202211502693A CN115851053A CN 115851053 A CN115851053 A CN 115851053A CN 202211502693 A CN202211502693 A CN 202211502693A CN 115851053 A CN115851053 A CN 115851053A
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Abstract
The invention discloses a special water-based insulating coating for a new energy automobile battery water-cooling plate, and relates to the technical field of coatings, wherein the oil-based insulating coating comprises the following raw materials: the water-based acrylic acid emulsion paint comprises water-based hydroxyl acrylic acid emulsion, amino resin, a water-based polyether siloxane defoaming agent, a water-based polyurethane leveling agent, an associated polyurethane thickening agent, insulating carbon black, a dispersing agent, matting powder, a solvent and distilled water. According to the invention, the water-based hydroxyl acrylic emulsion and the amino resin are used as the base material of the coating, and the water-based polyether siloxane defoaming agent, the water-based polyurethane leveling agent, the associated polyurethane thickener and the insulating carbon black are added, wherein the water-based polyether siloxane defoaming agent can effectively eliminate bubbles in the coating; the aqueous polyurethane leveling agent can improve the wettability to materials, and the insulating carbon black can improve the color and the insulating property of the coating.
Description
Technical Field
The invention relates to the technical field of coatings, and particularly relates to a special water-based insulating coating for a battery water-cooling plate of a new energy automobile.
Background
The paint belongs to organic chemical high molecular material, and the formed coating film belongs to high molecular compound type. According to the modern popular classification of chemical products, the coating belongs to fine chemical products. Modern coatings are becoming a versatile class of engineering materials and are an important industry in the chemical industry. The coating mainly has four functions: protecting, decorating, masking the defects and other special functions of the product and improving the value of the product.
New energy automobile battery package water-cooling board need be scribbled a layer of insulating anticorrosive coating and is satisfied the electrical insulation requirement between battery electricity core and the water-cooling board, and the coating needs to possess anticorrosive function simultaneously. The existing insulating anticorrosive paint has poor insulating property and anticorrosive property, and cannot meet the performance requirement of a new energy automobile battery water cooling plate on the paint.
Disclosure of Invention
The invention aims to provide a special water-based insulating coating for a battery water-cooling plate of a new energy automobile, which aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a water-based insulating paint special for a battery water-cooling plate of a new energy automobile comprises the following raw materials in percentage: 50-60% of water-based hydroxyl acrylic emulsion, 10-15% of amino resin, 0.1-0.3% of water-based polyether siloxane defoaming agent, 0.2-0.5% of water-based polyurethane leveling agent, 0.3-0.5% of associative polyurethane thickening agent, 2-3% of insulating carbon black, 0.7-1% of dispersing agent, 3-5% of matting powder, 5-10% of solvent and 10-15% of distilled water.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: the dispersant is a water-based modified polyurethane high polymer dispersant.
In one alternative: the matting powder is water-based special silicon dioxide matting powder.
In one alternative: the solvent is DMEA solvent.
A preparation method of the water-based insulating paint special for the new energy automobile battery water cooling plate comprises the following steps:
step S1: mixing water-based hydroxyl acrylic emulsion, amino resin, a water-based polyether siloxane defoamer, a water-based polyurethane flatting agent, an associated polyurethane thickener, a dispersing agent, matting powder, a solvent and distilled water together and dispersing at a high speed to obtain finished gloss oil and semi-finished gloss oil;
step S2: performing dispersion quality detection on the finished gloss oil and the semi-finished gloss oil, returning to the step S1, and performing high-speed dispersion again if the detection is unqualified;
and step S3: adding insulating carbon black into the semi-finished gloss oil detected to be qualified in the step S2, and dispersing at a high speed to obtain coarse color paste;
and step S4: placing the coarse color paste in a grinding machine for grinding, and carrying out grinding quality detection on the ground color paste until the quality of the ground color paste is qualified;
step S5: adding the finished gloss oil qualified in the step S2 into the color paste with qualified quality in the step S4, mixing colors and stirring, and detecting the quality of mixed colors after the color mixing is finished until the detection is qualified to obtain the finished gloss oil after the color mixing;
step S6: and filtering and packaging the finished gloss oil after color matching to obtain the water-based insulating paint product.
In one alternative: the dispersion speed in the high-speed dispersion is 800-1000 r/min, the dispersion time is 30-40 min, and the items of dispersion quality detection comprise fineness, viscosity and glossiness.
In one alternative: the grinding pressure in the grinding machine is 0.2Mpa, and the grinding times are 3-5 times; the items of the grinding quality detection include fineness, color and hiding power.
In one alternative: in the step S5, the stirring speed in the toning and stirring is 800-1000 rpm, the stirring time is 30-40 minutes, and the items of toning quality detection comprise color, glossiness, covering power and viscosity.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the water-based hydroxyl acrylic emulsion and the amino resin are used as the base material of the coating, and the water-based polyether siloxane defoaming agent, the water-based polyurethane leveling agent, the associated polyurethane thickener and the insulating carbon black are added, wherein the water-based polyether siloxane defoaming agent can effectively eliminate bubbles in the coating; the water-based polyurethane leveling agent can improve the wettability to materials, and the insulating carbon black can improve the color and the insulating property of the coating;
2. the coating product prepared by the invention has good adhesive force with metal and excellent electrical insulation performance, and can select corresponding film thickness and good corrosion resistance according to different insulation requirements.
Drawings
FIG. 1 is a schematic diagram of a preparation process flow of the special water-based insulating coating for the new energy automobile battery water-cooling plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Example 1
The embodiment of the invention provides a special water-based insulating coating for a battery water-cooling plate of a new energy automobile, which comprises the following raw materials in percentage: 50 percent of water-based hydroxyl acrylic emulsion, 15 percent of amino resin, 0.3 percent of water-based polyether siloxane defoaming agent, 0.2 percent of water-based polyurethane leveling agent, 0.5 percent of associative polyurethane thickening agent, 3 percent of insulating carbon black, 1 percent of dispersing agent, 5 percent of matting powder, 10 percent of solvent and 15 percent of distilled water.
The dispersing agent is a water-based modified polyurethane high polymer dispersing agent, the matting powder is water-based special silicon dioxide matting powder, and the solvent is DMEA solvent.
A preparation method of the water-based insulating paint special for the new energy automobile battery water cooling plate comprises the following steps:
step S1: mixing water-based hydroxyl acrylic emulsion, amino resin, a water-based polyether siloxane defoaming agent, a water-based polyurethane leveling agent, an associated polyurethane thickener, a dispersing agent, matting powder, a solvent and distilled water together and dispersing at a high speed to obtain finished gloss oil and semi-finished gloss oil;
step S2: performing dispersion quality detection on the finished gloss oil and the semi-finished gloss oil, returning to the step S1 after the detection is unqualified, and performing high-speed dispersion again;
and step S3: adding insulating carbon black into the semi-finished gloss oil detected to be qualified in the step S2, and dispersing at a high speed to obtain coarse color paste;
and step S4: placing the coarse color paste in a grinding machine for grinding, and carrying out grinding quality detection on the ground color paste until the quality of the ground color paste is qualified;
step S5: adding the finished gloss oil qualified in the step S2 into the color paste with qualified quality in the step S4, mixing colors and stirring, and detecting the quality of mixed colors after the color mixing is finished until the detection is qualified to obtain the finished gloss oil after the color mixing;
step S6: and filtering and packaging the finished gloss oil after color matching to obtain the water-based insulating paint product.
The dispersing speed in the high-speed dispersion is 800 revolutions per minute, the dispersing time is 30 minutes, and items for detecting the dispersing quality comprise fineness, viscosity and glossiness; the grinding pressure in the grinding machine is 0.2Mpa, and the grinding times are 3 times; the items of the grinding quality detection comprise fineness, color and covering power; in the step S5, the stirring speed in the toning and stirring is 800 rpm, the stirring time is 30 minutes, and the items of the toning quality detection include color, glossiness, hiding power and viscosity.
Example 2
The embodiment of the invention provides a special water-based insulating coating for a battery water-cooling plate of a new energy automobile, which comprises the following raw materials in percentage: 60 percent of water-based hydroxyl acrylic emulsion, 10 percent of amino resin, 0.1 percent of water-based polyether siloxane defoaming agent, 0.5 percent of water-based polyurethane leveling agent, 0.3 percent of associative polyurethane thickening agent, 2 percent of insulating carbon black, 0.7 percent of dispersing agent, 3 percent of matting powder, 8.4 percent of solvent and 15 percent of distilled water.
The dispersing agent is a water-based modified polyurethane high polymer dispersing agent, the matting powder is water-based special silicon dioxide matting powder, and the solvent is DMEA solvent.
A preparation method of the water-based insulating paint special for the new energy automobile battery water cooling plate comprises the following steps:
step S1: mixing water-based hydroxyl acrylic emulsion, amino resin, a water-based polyether siloxane defoaming agent, a water-based polyurethane leveling agent, an associated polyurethane thickener, a dispersing agent, matting powder, a solvent and distilled water together and dispersing at a high speed to obtain finished gloss oil and semi-finished gloss oil;
step S2: performing dispersion quality detection on the finished gloss oil and the semi-finished gloss oil, returning to the step S1 after the detection is unqualified, and performing high-speed dispersion again;
and step S3: adding insulating carbon black into the semi-finished gloss oil detected to be qualified in the step S2, and dispersing at a high speed to obtain coarse color paste;
and step S4: placing the coarse color paste into a grinding machine for grinding, and carrying out grinding quality detection on the ground color paste until the quality of the ground color paste is qualified;
step S5: adding the finished gloss oil qualified in the step S2 into the color paste with qualified quality in the step S4, mixing colors and stirring, and detecting the quality of mixed colors after the color mixing is finished until the detection is qualified to obtain the finished gloss oil after the color mixing;
step S6: filtering and packaging the finished product gloss oil after color matching to obtain the water-based insulating paint product.
The dispersion speed in the high-speed dispersion is 900 revolutions per minute, the dispersion time is 35 minutes, and items for detecting the dispersion quality comprise fineness, viscosity and glossiness; the grinding pressure in the grinding machine is 0.2Mpa, and the grinding times are 4 times; the items of the grinding quality detection comprise fineness, color and covering power; in the step S5, the stirring speed in the toning and stirring is 900 rpm, the stirring time is 35 minutes, and the items of the toning quality detection include color, glossiness, hiding power and viscosity.
Example 3
The embodiment of the invention provides a special water-based insulating coating for a battery water-cooling plate of a new energy automobile, which comprises the following raw materials in percentage: 60 percent of water-based hydroxyl acrylic emulsion, 15 percent of amino resin, 0.3 percent of water-based polyether siloxane defoaming agent, 0.2 percent of water-based polyurethane leveling agent, 0.5 percent of associative polyurethane thickening agent, 3 percent of insulating carbon black, 1 percent of dispersing agent, 5 percent of matting powder, 5 percent of solvent and 10 percent of distilled water.
The dispersing agent is a water-based modified polyurethane high polymer dispersing agent, the matting powder is water-based special silicon dioxide matting powder, and the solvent is DMEA solvent.
A preparation method of the water-based insulating paint special for the new energy automobile battery water cooling plate comprises the following steps:
step S1: mixing water-based hydroxyl acrylic emulsion, amino resin, a water-based polyether siloxane defoaming agent, a water-based polyurethane leveling agent, an associated polyurethane thickener, a dispersing agent, matting powder, a solvent and distilled water together and dispersing at a high speed to obtain finished gloss oil and semi-finished gloss oil;
step S2: performing dispersion quality detection on the finished gloss oil and the semi-finished gloss oil, returning to the step S1 after the detection is unqualified, and performing high-speed dispersion again;
and step S3: adding insulating carbon black into the semi-finished gloss oil detected to be qualified in the step S2, and dispersing at a high speed to obtain coarse color paste;
and step S4: placing the coarse color paste into a grinding machine for grinding, and carrying out grinding quality detection on the ground color paste until the quality of the ground color paste is qualified;
step S5: adding the finished gloss oil qualified in the step S2 into the color paste with qualified quality in the step S4, mixing colors and stirring, and detecting the quality of mixed colors after the color mixing is finished until the detection is qualified to obtain the finished gloss oil after the color mixing;
step S6: and filtering and packaging the finished gloss oil after color matching to obtain the water-based insulating paint product.
The dispersion speed in the high-speed dispersion is 1000 revolutions per minute, the dispersion time is 40 minutes, and items of dispersion quality detection comprise fineness, viscosity and glossiness; the grinding pressure in the grinding machine is 0.2Mpa, and the grinding times are 5 times; the items of the grinding quality detection comprise fineness, color and covering power; in the step S5, the stirring speed in the toning and stirring is 1000 rpm, the stirring time is 40 minutes, and the items of the toning quality detection include color, glossiness, hiding power and viscosity.
The quality detection in each step is that the dry film is sprayed according to construction parameters, and the conventional detection items are as follows:
taking the special aqueous insulating coating for the new energy automobile battery water-cooling plate prepared in the embodiment 2 as an example, the new energy automobile battery water-cooling plate is coated.
The coating process comprises the following steps:
step 1, preparing a coating: step 1.1, opening the coating tank cover by using a tank opener;
step 1.2: confirming and stirring all black precipitates to be liquid by using a stirring rod and completely dissolving the black precipitates, wherein the appearance and the performance of the coating are influenced by incomplete dissolution of the precipitates;
step 1.3: t-2# # series diluents are used together to form a coating: diluent =100:10 to dilute the coating; wherein the content of the first and second substances,
step 1.4: after the paint is diluted and stirred uniformly, the paint is filtered by a 200-mesh filter screen.
Step 2 cleaning of the substrate:
the special solvent is used for cleaning dust, grease and metal oxide on the surface of the wiping substrate.
Step 3, a spraying process:
step 3.1: adjusting the atomization pressure to 0.05-0.2MPa, wherein the pressure can be adjusted;
step 3.2: controlling and adjusting a spraying mode and the flow of the coating according to needs;
step 3.3: keeping the distance between the spray gun and the substrate at 15-20cm;
step 3.4: a slow and steady spray pattern is recommended to achieve uniform dry film thickness;
step 3.5: curing the wet film at 150 ℃ for 15 minutes, baking at 150 ℃ for 2 hours, detecting the thickness of the film by using a film thickness meter, and selecting a proper film thickness according to the insulation requirements of the project;
step 3.6: the insulation performance test data (breakdown voltage) under different film thicknesses are shown in the following table:
step 3.7: if the coating appearance is uneven, the atomization pressure or the coating flow is regulated;
step 3.8: the coating is kept stirred during the spraying process.
Step 4, curing process:
step 4.1: curing is generally carried out at 150 ℃ for 15 minutes; please refer to the curing process as follows:
spray → room temperature leveling for 5 minutes → 150 ℃ for 15 minutes → cool to room temperature → spray → room temperature leveling for 5 minutes → 150 ℃ for 15 minutes → cool to room temperature; put into the oven at 150 ℃ for 2 hours after the wire is off.
The curing conditions experimental data are as follows:
the product reliability test results are shown in the following table:
the coating product prepared by the invention has good adhesive force with metal and excellent electrical insulation performance, and can select corresponding film thickness and good corrosion resistance according to different insulation requirements.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (8)
1. The water-based insulating paint special for the new energy automobile battery water-cooling plate is characterized by comprising the following raw materials in percentage: 50-60% of water-based hydroxyl acrylic emulsion, 10-15% of amino resin, 0.1-0.3% of water-based polyether siloxane defoaming agent, 0.2-0.5% of water-based polyurethane leveling agent, 0.3-0.5% of associative polyurethane thickening agent, 2-3% of insulating carbon black, 0.7-1% of dispersing agent, 3-5% of matting powder, 5-10% of solvent and 10-15% of distilled water.
2. The special water-based insulating paint for the new energy automobile battery water-cooling plate as claimed in claim 1, wherein the dispersant is a water-based modified polyurethane high polymer dispersant.
3. The special water-based insulating paint for the new energy automobile battery water-cooling plate as claimed in claim 1, wherein the matting powder is a special water-based silicon dioxide matting powder.
4. The special water-based insulating paint for the water-cooled plate of the new energy automobile battery as claimed in claim 1, wherein the solvent is DMEA solvent.
5. The preparation method of the special water-based insulating paint for the water-cooled plate of the new energy automobile battery as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
step S1: mixing water-based hydroxyl acrylic emulsion, amino resin, a water-based polyether siloxane defoaming agent, a water-based polyurethane leveling agent, an associated polyurethane thickener, a dispersing agent, matting powder, a solvent and distilled water together and dispersing at a high speed to obtain finished gloss oil and semi-finished gloss oil;
step S2: performing dispersion quality detection on the finished gloss oil and the semi-finished gloss oil, returning to the step S1 after the detection is unqualified, and performing high-speed dispersion again;
and step S3: adding insulating carbon black into the semi-finished gloss oil detected to be qualified in the step S2, and dispersing at a high speed to obtain coarse color paste;
and step S4: placing the coarse color paste into a grinding machine for grinding, and carrying out grinding quality detection on the ground color paste until the quality of the ground color paste is qualified;
step S5: adding the finished gloss oil qualified in the step S2 into the color paste with qualified quality in the step S4, mixing colors and stirring, and detecting the quality of mixed colors after the color mixing is finished until the detection is qualified to obtain the finished gloss oil after the color mixing;
step S6: and filtering and packaging the finished gloss oil after color matching to obtain the water-based insulating paint product.
6. The preparation method of the special water-based insulating paint for the water-cooled plate of the new energy automobile battery as claimed in claim 5, wherein the dispersion speed in the high-speed dispersion is 800-1000 rpm, the dispersion time is 30-40 minutes, and the items for detecting the dispersion quality comprise fineness, viscosity and glossiness.
7. The preparation method of the special water-based insulating paint for the water-cooled plate of the new energy automobile battery according to claim 5, wherein the grinding pressure in the grinding machine is 0.2Mpa, and the grinding times are 3-5 times; the items of the grinding quality detection include fineness, color and hiding power.
8. The preparation method of the special water-based insulating paint for the water-cooled plate of the new energy automobile battery according to claim 5, wherein in the step S5, the stirring speed in color mixing and stirring is 800-1000 revolutions per minute, the stirring time is 30-40 minutes, and the items for detecting the color mixing quality comprise color, glossiness, covering power and viscosity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211502693.5A CN115851053A (en) | 2022-11-28 | 2022-11-28 | Special water-based insulating paint for new energy automobile battery water-cooling plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211502693.5A CN115851053A (en) | 2022-11-28 | 2022-11-28 | Special water-based insulating paint for new energy automobile battery water-cooling plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363174A (en) * | 2023-10-10 | 2024-01-09 | 湖北睿智新材料有限责任公司 | Powder coating for battery guard board and preparation method and application thereof |
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2022
- 2022-11-28 CN CN202211502693.5A patent/CN115851053A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363174A (en) * | 2023-10-10 | 2024-01-09 | 湖北睿智新材料有限责任公司 | Powder coating for battery guard board and preparation method and application thereof |
| CN117363174B (en) * | 2023-10-10 | 2024-04-12 | 湖北睿智新材料有限责任公司 | Powder coating for battery guard board and preparation method and application thereof |
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