CN114149731A - Environment-friendly water-based paint, preparation method and application - Google Patents
Environment-friendly water-based paint, preparation method and application Download PDFInfo
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- CN114149731A CN114149731A CN202111383944.8A CN202111383944A CN114149731A CN 114149731 A CN114149731 A CN 114149731A CN 202111383944 A CN202111383944 A CN 202111383944A CN 114149731 A CN114149731 A CN 114149731A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000003973 paint Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 18
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 18
- 239000004814 polyurethane Substances 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 12
- 239000012948 isocyanate Substances 0.000 claims abstract description 12
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 12
- 239000010452 phosphate Substances 0.000 claims abstract description 12
- 239000006254 rheological additive Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- -1 phosphate ester Chemical class 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000009736 wetting Methods 0.000 claims abstract description 8
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960002887 deanol Drugs 0.000 claims abstract description 7
- 239000012972 dimethylethanolamine Substances 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000006748 scratching Methods 0.000 description 7
- 230000002393 scratching effect Effects 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000003431 cross linking reagent Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 229910021389 graphene Inorganic materials 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical group N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000003394 haemopoietic effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an environment-friendly water-based paint which comprises the following substances in parts by weight: 35 to 39 parts of an aqueous acrylic resin; 10 to 18 parts of an aqueous isocyanate resin; 1 to 3 parts of a phosphate ester; 0.5 to 1 part of an organosilicon substrate wetting and leveling agent; 0.2 to 1 part of a polyurethane rheological additive; 35 to 47 parts of deionized water; 0.1 to 0.6 parts of dimethylethanolamine; the invention also discloses a preparation method and application of the water-based paint; the invention can quickly form a film, and the obtained film has good construction performance, heat dissipation and stability; the water-based environment-friendly coating is suitable for workpieces such as notebook computer radiators and the like, and fills the gap of the application of the water-based environment-friendly coating in the surface treatment of the computer radiators.
Description
Technical Field
The invention relates to the technical field of water-based paint, in particular to environment-friendly water-based paint, a preparation method and application.
Background
The coating used by the radiator of the notebook computer is mainly solvent coating, and the solvent coating has high VOC content, heavy smell and benzene solvent content, so that the hematopoietic function and the adverse health can be influenced after long-term use, the coating is seriously contradicted by front-line operators, and the coating is not in accordance with the increasingly strengthened atmospheric control policy of the state. In addition, the solvent-based coating belongs to dangerous goods, is inconvenient to transport, and has higher and higher transportation cost. Notebook computers belong to civil products, and end market customers clearly require suppliers to accelerate oil-to-water coating, so that the application of water-based paint in the notebook computers is urgent.
Disclosure of Invention
The invention aims to provide the environment-friendly water-based paint, which can be rapidly formed into a film, and the obtained film has good heat dissipation and good stability.
In order to solve the technical problem, the technical scheme of the invention is as follows: the environment-friendly water-based paint comprises the following substances in parts by mass:
30-35 parts of water-based acrylic resin;
15-30 parts of water-based isocyanate resin;
4 to 6 parts of phosphate;
0.5 to 1 part of an organosilicon substrate wetting and leveling agent;
0.2 to 1 part of polyurethane rheological additive;
35 to 47 parts of deionized water;
dimethylethanolamine 0.1 to 0.6 parts.
Preferably, the invention further comprises the following components in parts by weight:
4-8 parts of pigment powder;
7-15 parts of functional monomer;
4 to 20 portions of water-based color paste. The pigment powder, the functional monomer and the water-based color paste are added into the water-based paint to improve the color of the obtained coating, so that the market demand is met.
Further preferably, the present invention further comprises graphene oxide for improving heat conduction.
Preferably, the phosphate ester is an epoxy-modified phosphate ester. The cross-linking agent phosphate is preferably epoxy modified phosphate, and the epoxy group is introduced to improve the stability of the system on the premise of ensuring the action of the phosphate cross-linking agent.
Preferably, the invention comprises the following substances in parts by weight:
37 parts of water-based acrylic resin;
15 parts of water-based isocyanate resin;
2.2 parts of epoxy modified phosphate;
0.7 part of an organosilicon substrate wetting and leveling agent;
0.5 part of polyurethane rheological additive;
44 parts of deionized water;
and 0.4 part of dimethylethanolamine.
The water paint has the best combination property after being cured.
The second purpose of the invention is to provide a preparation method of the environment-friendly water-based paint, and the invention effectively ensures the effective polymerization of the obtained water-based paint through controlling the components, the dosage and the adding sequence, and has good film forming property, stable film forming structure and reliable strength.
In order to solve the technical problem, the technical scheme of the invention is as follows: a preparation method of the environment-friendly water-based paint comprises the following steps:
step one, putting the water-based acrylic resin into a paint mixing cylinder, and stirring;
step two, adding the dissolved polyurethane rheological additive, and stirring;
step three, slowly adding the water-based isocyanate resin and the phosphate ester in turn under the stirring state of 600 revolutions per minute at 500-;
step four, adding the functional monomer, the organic silicon substrate wetting and leveling agent, the water-based color paste, the polyurethane rheological additive and the deionized water slowly in sequence under the stirring state of 800 revolutions per minute, and continuing to disperse for 20 minutes;
filtering to obtain the target environment-friendly water-based paint.
Preferably, the pH value of the mixture is adjusted to 8 to 9 after the fourth step of the invention; according to the invention, the pH value of the system is adjusted to be alkalescent, so that the hydrophilicity of the aqueous acrylic acid dispersoid is improved, and the stability of the system is improved.
Preferably, the stirring process parameters of the aqueous acrylic resin in the first step are as follows: 500-. The invention ensures that the hydroxyl can be fully exposed on the surface of the colloidal particles by fully stirring and high-speed shearing emulsification, and has higher effective hydroxyl content.
Preferably, the stirring process parameters in the second step and the third step are respectively as follows: 800 rpm, 10 minutes. The invention fully ensures that the crosslinking agent added in the second step and the third step is fully contacted with the water-based acrylic resin, thereby being beneficial to the polymerization reaction.
The third purpose of the invention is to provide a notebook computer radiator which has good radiating effect, good hardness and good adhesive force.
In order to solve the technical problem, the technical scheme of the invention is as follows: the invention provides a notebook computer radiator, wherein the surface of the radiator is coated with the water-based paint prepared by the invention.
Preferably, the drying conditions of the water paint are as follows: leveling for 2min to 5min after coating, and baking for 20min at 115 ℃. The water-based paint disclosed by the invention is low in drying temperature, high in film forming speed and good in film forming stability, and is suitable for being coated on a notebook computer radiator.
By adopting the technical scheme, the invention has the beneficial effects that:
the isocyanic acid group (-NCO) in the water-based closed isocyanate is unsealed at the low temperature of below 115 ℃, and is rapidly crosslinked with hydroxyl (-OH) and carboxyl (-COOH) in the water-based acrylic resin to carry out polymerization reaction, so that a coating with high crosslinking density and good guidance quality is formed in a short time to meet the special performance requirements of different workpieces on the coating;
the waterborne environment-friendly coating prepared by modifying the acrylic resin through the polyester dispersoid has high reaction activity and higher self-condensation tendency, so that the related coating film product has very good self-crosslinking density, hardness, chemical resistance and adhesive force at 115 ℃; the invention has high curing efficiency, is environment-friendly and energy-saving, and thoroughly solves the defects of poor adhesion of common water-based paint on various metal materials and poor alcohol resistance and salt mist resistance;
according to the invention, phosphate is matched with water-based closed isocyanate as a cross-linking agent, and is matched with dimethylethanolamine with chain extension and neutralizing agent functions, so that not only is the compactness of a polymerization structure facilitated, but also the stability of a system is facilitated, and the water-based coating with excellent hardness, adhesive force and chemical resistance is obtained;
the water-based paint film forming condition obtained by the invention is loose, has good construction performance, and can meet the matching with the powder primer and the PU primer.
Thereby achieving the above object of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
Example 1
The embodiment discloses an environment-friendly water-based paint, the specific components and the dosage of which are shown in table 1 in detail, and the specific preparation method comprises the following steps:
step one, putting the water-based acrylic resin into a paint mixing cylinder, and stirring;
the stirring process parameters of the aqueous acrylic resin in the first step are as follows: 500-.
Step two, adding the dissolved polyurethane rheological additive, and stirring;
step three, slowly adding the water-based isocyanate resin and the phosphate ester in sequence under the stirring state, and stirring to obtain polyurethane modified acrylic resin;
the stirring process parameters of the second step and the third step are respectively as follows: 800 rpm, 10 minutes.
Step four, adding the functional monomer, the organic silicon substrate wetting and leveling agent, the water-based color paste, the polyurethane rheological additive and the deionized water slowly in sequence under the stirring state of 500-600 revolutions per minute, and continuing to disperse for 20 minutes;
regulating the pH value of the mixture to 8-9 after the step four;
filtering to obtain the target environment-friendly water-based paint.
The water-based paint prepared by the embodiment is coated on the surface of a notebook computer radiator, and the specific drying conditions are as follows: leveling for 2min to 5min after coating, and baking for 20min at 115 ℃.
Example 2
The main differences between this embodiment and embodiment 1 are:
the specific components and the amounts are detailed in table 1;
the drying conditions after being coated on the surface of the notebook computer radiator are as follows: the specific drying conditions were: leveling for 3min after coating.
Example 3
The main differences between this embodiment and embodiment 1 are:
the specific components and the amounts are detailed in table 1;
the drying conditions after being coated on the surface of the notebook computer radiator are as follows: the specific drying conditions were: leveling for 4min after coating.
Example 4
The main differences between this embodiment and embodiment 1 are:
the specific components and the amounts are detailed in table 1;
the drying conditions after being coated on the surface of the notebook computer radiator are as follows: the specific drying conditions were: leveling for 5min after coating.
Example 5
The main differences between this embodiment and embodiment 1 are:
the specific components and the amounts are detailed in table 1;
the drying conditions after being coated on the surface of the notebook computer radiator are as follows: the specific drying conditions were: leveling for 4min after coating.
Comparative example
The main differences between this example and example 3 are detailed in table 1.
The aqueous paint film layers obtained in examples 1 to 5 and comparative example were respectively subjected to the following performance tests:
hardness:
the pencil hardness of the paint film is tested according to the national standard GB/T6739-2006. And respectively scratching the pencil core tips on the surface of the paint film at a constant speed at three different positions on the paint film by using a small cart, and taking the hardest pencil number which does not leave scratches on the surface of the paint film as the pencil hardness of the paint film.
Adhesion force:
controlling the thickness of a paint film to be 23 +/-3 mu m, scratching the paint film without scratching a base material by using a scratching device, then vertically and crossly scratching by using the scratching device, adhering a scratched area by using an adhesive tape after scratching is finished, forcibly tearing off the scratched area, observing the falling degree of the paint film to evaluate the adhesive force level of the paint film, and testing at least three different parts.
Water resistance:
testing the water resistance of the paint film according to the national standard GB/T1733-one 1993, sealing the edge of the paint film by using a mixture of paraffin and rosin, soaking the paint film after sealing the edge in water, taking out the paint film after 7 days, slightly wiping the surface of the paint film, and observing whether the paint film has the phenomena of foaming, discoloration and falling off.
Alcohol resistance:
the coating film thickness is controlled to be 23 +/-mu m, 500g of force is added, the coating is dipped and analyzed to be pure (ethanol is equal to or larger than 99.7 percent), the coating is wiped for 50 times, and whether the bottom is exposed or not is observed.
Watch (A)
Components and amounts (parts by mass) of aqueous paints of examples 1 to 5 and comparative examples
Watch (A)
Performance test of Water-based paint film layers obtained in examples 1 to 5 and comparative example
The data in tables 1 and 2 show that isocyanic acid group (-NCO) in the water-based blocked isocyanate is unsealed at low temperature below 115 ℃, and is rapidly crosslinked with hydroxyl group (-OH) and carboxyl group (-COOH) in the water-based acrylic resin to carry out polymerization reaction, so that a coating with high crosslinking density is formed in a short time to meet the special performance requirements of different workpieces on the coating, and the water-based environment-friendly coating prepared by modifying the acrylic resin through the polyester dispersion has high reaction activity and high self-condensation tendency, so that the related coating product has very good self-crosslinking density at 115 ℃; the water-based paint disclosed by the invention is high in curing efficiency, environment-friendly and energy-saving, and thoroughly overcomes the defects of poor adhesion of common water-based paint on various metal materials and poor alcohol resistance and salt spray resistance.
According to the invention, phosphate is matched with water-based closed isocyanate as a cross-linking agent, and is matched with dimethylethanolamine with chain extension and neutralizing agent functions, so that not only is the compactness of a polymerization structure facilitated, but also the stability of a system is facilitated, and the water-based coating with excellent hardness, adhesive force and chemical resistance is obtained; the obtained water-based paint has loose film forming conditions and good construction property, and can meet the matching of powder primer and PU primer.
As can be seen from table 2, in examples 3, 4 and 5, 2 parts, 5 parts and 10 parts by mass of graphene oxide were added, respectively. The graphene oxide has good dispersibility in water, and the graphene with a layered structure has excellent heat conductivity, and is matched with the internal structure of the film layer, so that the heat conductivity coefficient is effectively improved.
Claims (10)
1. An environment-friendly water-based paint, which is characterized in that: the composition comprises the following substances in parts by mass:
35-39 parts of water-based acrylic resin;
10-18 parts of water-based isocyanate resin;
1 to 3 parts of phosphate;
0.5 to 1 part of an organosilicon substrate wetting and leveling agent;
0.2 to 1 part of polyurethane rheological additive;
35 to 47 parts of deionized water;
dimethylethanolamine 0.1 to 0.6 parts.
2. The environment-friendly water-based paint with the improved heat dissipation function as claimed in claim 1, wherein: the composite material also comprises the following components in parts by mass:
4-8 parts of pigment powder;
7-15 parts of functional monomer;
4 to 20 portions of water-based color paste.
3. The environment-friendly water-based paint with the improved heat dissipation function as claimed in claim 1, wherein: the phosphate ester is epoxy modified phosphate ester.
4. The environment-friendly water-based paint with the improved heat dissipation function as claimed in claim 1, wherein: the composition comprises the following substances in parts by mass:
37 parts of water-based acrylic resin;
15 parts of water-based isocyanate resin;
2.2 parts of epoxy modified phosphate;
0.7 part of an organosilicon substrate wetting and leveling agent;
0.5 part of polyurethane rheological additive;
44 parts of deionized water;
and 0.4 part of dimethylethanolamine.
5. A method for preparing the environment-friendly water-based paint according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
step one, putting the water-based acrylic resin into a paint mixing cylinder, and stirring;
step two, adding the dissolved polyurethane rheological additive, and stirring;
step three, slowly adding the water-based isocyanate resin and the phosphate ester in sequence under the stirring state, and stirring to obtain polyurethane modified acrylic resin;
step four, adding the functional monomer, the organic silicon substrate wetting and leveling agent, the water-based color paste, the polyurethane rheological additive and the deionized water slowly in sequence under the stirring state, and continuously dispersing for 20 minutes;
filtering to obtain the target environment-friendly water-based paint.
6. The method for preparing the environment-friendly water-based paint according to claim 5, wherein: and after the fourth step, adjusting the pH value of the mixture to be 8 to 9.
7. The method for preparing the environment-friendly water-based paint according to claim 5, wherein: the stirring process parameters of the aqueous acrylic resin in the first step are as follows: 500-.
8. The method for preparing the environment-friendly water-based paint according to claim 5, wherein: the stirring process parameters of the second step and the third step are respectively as follows: 800 rpm, 10 minutes.
9. A notebook computer radiator which is characterized in that: the surface of the heat sink is coated with the aqueous paint according to any one of claims 1 to 4.
10. The heat sink of claim 9, wherein: the drying conditions of the water paint are as follows: leveling for 2min to 5min after coating, and baking for 20min at 115 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111383944.8A CN114149731A (en) | 2021-11-19 | 2021-11-19 | Environment-friendly water-based paint, preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111383944.8A CN114149731A (en) | 2021-11-19 | 2021-11-19 | Environment-friendly water-based paint, preparation method and application |
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| CN114149731A true CN114149731A (en) | 2022-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116376417A (en) * | 2023-04-06 | 2023-07-04 | 金华市美林涂料有限公司 | Water-based paint and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1060073A (en) * | 1996-08-27 | 1998-03-03 | Asahi Chem Ind Co Ltd | Aqueous polyisocyanate and aqueous coating material composition |
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