阅读说明：本技术 一种水性涂料组合物、制备方法 (Water-based paint composition and preparation method thereof ) 是由 不公告发明人 于 2020-06-08 设计创作，主要内容包括：本发明公开了一种水性涂料组合物、制备方法,所述水性涂料组合物,包括以下原料：含羧基的阴离子型水性聚氨酯,水性聚醚砜树脂,聚氨酯交联剂,水性硅树脂,异癸基甲基丙烯酸酯,瓜儿胶,增稠剂,乙烯基新癸酸酯,表面活性剂,水性氟碳树脂,香草醛,光稳定剂,异丙醇,聚乙烯醇缩甲醛,十二醇酯,异噻唑啉酮衍生物,硅丙乳液,聚四氟乙烯,蜡助剂。本发明的水性涂料组合物具有环保节能、稳定性好的优点,能够使用较长时间。(The invention discloses a water-based paint composition and a preparation method thereof, wherein the water-based paint composition comprises the following raw materials: anionic waterborne polyurethane containing carboxyl, waterborne polyether sulfone resin, polyurethane crosslinking agent, waterborne silicone resin, isodecyl methacrylate, guar gum, thickening agent, vinyl neodecanoate, surfactant, waterborne fluorocarbon resin, vanillin, light stabilizer, isopropanol, polyvinyl formal, lauryl alcohol ester, isothiazolinone derivative, silicone-acrylic emulsion, polytetrafluoroethylene and wax assistant. The water-based paint composition has the advantages of environmental protection, energy conservation and good stability, and can be used for a long time.)

1. An aqueous coating composition, characterized by comprising the following raw materials: anionic waterborne polyurethane containing carboxyl, waterborne polyether sulfone resin, polyurethane crosslinking agent, waterborne silicone resin, isodecyl methacrylate, guar gum, thickening agent, vinyl neodecanoate, surfactant, waterborne fluorocarbon resin, vanillin, light stabilizer, isopropanol, polyvinyl formal, lauryl alcohol ester, isothiazolinone derivative, silicone-acrylic emulsion, polytetrafluoroethylene and wax assistant;

the weight ratio of the thickening agent to the water-based silicone resin to the silicone-acrylate emulsion is (1.2-2) to (2-8) to (2-10);

the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association;

the water-based silicone resin is Orlixing FSP series water-soluble liquid resin and is an alkaline aqueous solution.

2. The aqueous coating composition of claim 1, wherein the weight ratio of the thickener, the aqueous silicone resin, and the silicone acrylic emulsion is 1.5:6: 8.

3. The aqueous coating composition of claim 1, comprising the following raw materials in parts by weight: 14-20 parts of carboxyl-containing anionic waterborne polyurethane, 11-17 parts of waterborne polyether sulfone resin, 2-10 parts of polyurethane cross-linking agent, 2-8 parts of waterborne silicone resin, 3-5 parts of isodecyl methacrylate, 6-8 parts of guar gum, 1.2-2 parts of thickening agent, 1-7 parts of vinyl neodecanoate, 8-9 parts of surfactant, 20-35 parts of waterborne fluorocarbon resin, 5-8 parts of vanillin, 3-5 parts of light stabilizer, 5-7 parts of isopropanol, 2-3.5 parts of polyvinyl formal, 2-6 parts of decaglycol ester, 4-6 parts of isothiazolinone derivative, 2-10 parts of silicone-acrylate emulsion, 3.5-8 parts of polytetrafluoroethylene and 2-7 parts of wax assistant.

4. The aqueous coating composition of claim 1 or 3, wherein the carboxyl-containing anionic aqueous polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing with TDI.

5. An aqueous coating composition according to claim 1 or 3, characterized in that the surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

6. An aqueous coating composition according to claim 1 or 3, characterized in that the polyurethane crosslinker is an aziridinyl terminated polyurethane crosslinker.

7. The aqueous coating composition according to claim 1 or 3, wherein the polytetrafluoroethylene comprises tetrafluoroethylene units or tetrafluoroethylene units and modifying monomer units based on a modifying monomer copolymerizable with tetrafluoroethylene, and the polytetrafluoroethylene powder has a specific surface area of 40m²More than g.

8. An aqueous coating composition according to claim 1 or 3, wherein the light stabilizer is the ultraviolet absorber UV531 and the wax promoter is an aqueous OPV gloss oil wax promoter.

9. A method for preparing an aqueous coating composition according to any one of claims 1 to 8, comprising the steps of:

step 1: placing isodecyl methacrylate, guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of that of a reaction system, and stirring at 30-40 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate, the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 75-80 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 30-40 ℃, adding polyvinyl formal, dodecyl ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding carboxyl-containing anionic waterborne polyurethane, waterborne polyether sulfone resin and polyurethane cross-linking agent, and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Technical Field

The invention relates to the technical field of coatings, in particular to a water-based coating composition and a preparation method thereof.

Background

The coating is traditionally named as paint in China. The coating is a continuous film which is coated on the surface of an object to be protected or decorated and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliaries and using an organic solvent or water.

The development of a coating with better dust pick-up resistance remains an important goal in the paint industry. Reasons for this include the growing industry of "softer" elastomer walls and roof coatings; these industries require low Volatile Organic Compound (VOC) formulations, which traditionally result in more viscous coatings due to reduced glass transition temperature (Tg); and the interior finishing of the construction of high-rise commercial buildings planned in emerging areas, most notably in asia, continues to push the need for coatings that are easier to clean, more visually tactile and maintain. How to improve the retention property while ensuring the quality of the coating is very important.

Disclosure of Invention

The invention aims to provide a water-based paint composition and a preparation method thereof, and aims to solve the problem of how to improve paint retentivity.

In order to achieve the purpose, the invention provides the following technical scheme:

an aqueous coating composition comprising the following raw materials: anionic waterborne polyurethane containing carboxyl, waterborne polyether sulfone resin, polyurethane crosslinking agent, waterborne silicone resin, isodecyl methacrylate, guar gum, thickening agent, vinyl neodecanoate, surfactant, waterborne fluorocarbon resin, vanillin, light stabilizer, isopropanol, polyvinyl formal, lauryl alcohol ester, isothiazolinone derivative, silicone-acrylic emulsion, polytetrafluoroethylene and wax assistant;

the weight ratio of the thickening agent to the water-based silicone resin to the silicone-acrylate emulsion is (1.2-2) to (2-8) to (2-10);

the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association;

the water-based silicone resin is Orlixing FSP series water-soluble liquid resin and is an alkaline aqueous solution.

Preferably, the weight ratio of the thickening agent to the water-based silicone resin to the silicone-acrylate emulsion is 1.5:6: 8. The particle size of the silicone-acrylate emulsion is 50 nm.

Preferably, the water-based paint composition comprises the following raw materials in parts by weight: 14-20 parts of carboxyl-containing anionic waterborne polyurethane, 11-17 parts of waterborne polyether sulfone resin, 2-10 parts of polyurethane cross-linking agent, 2-8 parts of waterborne silicone resin, 3-5 parts of isodecyl methacrylate, 6-8 parts of guar gum, 1.2-2 parts of thickening agent, 1-7 parts of vinyl neodecanoate, 8-9 parts of surfactant, 20-35 parts of waterborne fluorocarbon resin, 5-8 parts of vanillin, 3-5 parts of light stabilizer, 5-7 parts of isopropanol, 2-3.5 parts of polyvinyl formal, 2-6 parts of decaglycol ester, 4-6 parts of isothiazolinone derivative, 2-10 parts of silicone-acrylate emulsion, 3.5-8 parts of polytetrafluoroethylene and 2-7 parts of wax assistant.

Preferably, the synthesis of the anionic waterborne polyurethane containing carboxyl is carried out by dispersing DMPA in PEG200 and butanone and then catalyzing with TDI.

Preferably, the surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

Preferably, the polyurethane crosslinker is an aziridinyl terminated polyurethane crosslinker.

Preferably, the polytetrafluoroethylene contains tetrafluoroethylene units or tetrafluoroethylene units and modified monomer units based on a modified monomer copolymerizable with the above tetrafluoroethylene, and the polytetrafluoroethylene powder has a specific surface area of 40m²More than g.

Preferably, the light stabilizer is an ultraviolet light absorber UV531, and the wax assistant is an aqueous OPV gloss oil wax preparation.

The invention also provides a preparation method of the water-based paint composition, which comprises the following steps:

step 1: placing isodecyl methacrylate, guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of that of a reaction system, and stirring at 30-40 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate, the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 75-80 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 30-40 ℃, adding polyvinyl formal, dodecyl ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Compared with the prior art, the invention has the following beneficial effects:

(1) as can be seen from the data of examples 1-6 and comparative examples 1-3, the performance of the coating mixture of examples 1-6 is significantly improved, and the retention of the coating by adding the thickener, the water-based silicone resin and the silicone-acrylate emulsion to the raw materials is significantly improved. Meanwhile, the thickening agent, the water-based silicone resin and the silicone-acrylate emulsion are added into the raw materials to play a synergistic role, so that the retentivity of the coating is effectively improved, which may be: the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, the thickening effect is achieved through intermolecular association, the medium and high shear viscosity can be effectively improved, the thickening ratio is proper, the excellent flowing and leveling property and the gloss showing property are endowed to the inner and outer wall coatings, and the film forming property is improved. The thickening agent and the water-based silicone resin interact to improve the adhesive force of the coating mixture, the thickening agent has better thickening effect on 50nm fine-particle-size silicone-acrylate emulsion, and good leveling property and coating film fullness are provided. In addition, the aqueous silicone resin and the thickening agent have excellent formula compatibility, can effectively improve high-shear viscosity, and have excellent coating film fullness, splash resistance, water resistance and water diversion resistance. The silicone-acrylic emulsion has strong adsorption effect on the thickening agent, and can improve the stability of the high-coating mixture after solidification. The water-based emulsion formed by graft copolymerization of the acrylate component and the organic silicon monomer in the silicone-acrylate emulsion can promote the adhesive force of the coating.

Detailed Description

The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

A water-based paint composition is prepared from the following raw materials in parts by weight:

20 parts of carboxyl-containing anionic waterborne polyurethane, 15 parts of waterborne polyether sulfone resin, 4 parts of polyurethane cross-linking agent (B), 6 parts of waterborne silicone resin, 4 parts of isodecyl methacrylate (IDMA), 5 parts of guar gum, 1.5 parts of thickening agent, 2 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 21 parts of waterborne fluorocarbon resin, 6 parts of vanillin, 4 parts of light stabilizer, 6 parts of isopropanol, 2.5 parts of polyvinyl formal, 5 parts of dodecanol ester, 4 parts of isothiazolinone derivative, 8 parts of silicone-acrylic emulsion, 6 parts of polytetrafluoroethylene and 5 parts of wax assistant.

The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.

The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.

The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m²More than g.

The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.

The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.

The light stabilizer is ultraviolet light absorber UV531, the light stabilizer is OK520, and the wax promoter is water-based OPV gloss oil wax preparation.

The preparation method of the water-based paint composition comprises the following steps:

step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 45 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;

step 2

Heating to 76 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 48 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Example 2: a water-based paint composition is prepared from the following raw materials in parts by weight:

18 parts of carboxyl-containing anionic waterborne polyurethane, 13 parts of waterborne polyether sulfone resin, 7 parts of polyurethane cross-linking agent (B), 6 parts of waterborne silicone resin, 3 parts of isodecyl methacrylate (IDMA), 7 parts of guar gum, 1.8 parts of thickening agent, 5 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 28 parts of waterborne fluorocarbon resin, 7 parts of vanillin and 4 parts of light stabilizer,

the wax-free anti-aging coating comprises 15 parts of carboxyl, 6 parts of isopropanol, 2.5 parts of polyvinyl formal, 4 parts of dodecanol ester, 5 parts of isothiazolinone derivatives, 2.5 parts of silicone-acrylic emulsion, 4 parts of polytetrafluoroethylene and 6 parts of wax auxiliaries. The synthesis of anionic waterborne polyurethane is carried out by dispersing DMPA in PEG200 and butanone and then catalyzing with TDI.

The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.

The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m²More than g.

The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.

The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.

The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.

The preparation method of the water-based paint composition comprises the following steps:

step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 40 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 80 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 40 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Example 3

A water-based paint composition is prepared from the following raw materials in parts by weight:

15 parts of carboxyl-containing anionic waterborne polyurethane, 11 parts of waterborne polyether sulfone resin, 2 parts of polyurethane cross-linking agent (B), 8 parts of waterborne silicone resin, 5 parts of isodecyl methacrylate (IDMA), 8 parts of guar gum, 2 parts of thickening agent, 7 parts of vinyl neodecanoate (NEO10), 9 parts of surfactant, 35 parts of waterborne fluorocarbon resin, 8 parts of vanillin, 5 parts of light stabilizer, 7 parts of isopropanol, 3.5 parts of polyvinyl formal, 6 parts of dodecanol ester, 6 parts of isothiazolinone derivative, 10 parts of silicone-acrylic emulsion, 8 parts of polytetrafluoroethylene and 7 parts of wax assistant.

The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.

The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.

The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m²More than g.

The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.

The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.

The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.

The preparation method of the water-based paint composition comprises the following steps:

step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 42 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 75 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 40 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Example 4

A water-based paint composition is prepared from the following raw materials in parts by weight:

16 parts of carboxyl-containing anionic waterborne polyurethane, 16 parts of waterborne polyether sulfone resin, 4 parts of polyurethane cross-linking agent (B), 3 parts of waterborne silicone resin, 3 parts of isodecyl methacrylate (IDMA), 6 parts of guar gum, 2 parts of thickening agent, 2 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 22 parts of waterborne fluorocarbon resin, 7 parts of vanillin, 4 parts of light stabilizer, 6 parts of isopropanol, 4 parts of polyvinyl formal, 4 parts of dodecyl ester, 4 parts of isothiazolinone derivative, 7 parts of silicone-acrylate emulsion, 7 parts of polytetrafluoroethylene and 7 parts of wax assistant.

The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.

The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.

The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m²More than g.

The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.

The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.

The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.

The preparation method of the water-based paint composition comprises the following steps:

step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 41 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 79 ℃ to react for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 43 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Example 5

A water-based paint composition is prepared from the following raw materials in parts by weight:

18 parts of carboxyl-containing anionic waterborne polyurethane, 13 parts of waterborne polyether sulfone resin, 2 parts of polyurethane cross-linking agent (B), 5 parts of waterborne silicone resin, 4 parts of isodecyl methacrylate (IDMA), 7 parts of guar gum, 2 parts of thickening agent, 2 parts of vinyl neodecanoate (NEO10), 8.5 parts of surfactant, 22 parts of waterborne fluorocarbon resin, 6 parts of vanillin, 4 parts of light stabilizer, 12 parts of isopropanol, 6 parts of 3 parts, 2 parts of polyvinyl formal, 3 parts of dodecanol ester, 4 parts of isothiazolinone derivative, 5 parts of silicone-acrylic emulsion, 6 parts of polytetrafluoroethylene and 3 parts of wax assistant.

The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.

The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.

The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m²More than g.

The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.

The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.

The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.

The preparation method of the water-based paint composition comprises the following steps:

step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 46 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 76 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 44 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Example 6

A water-based paint composition is prepared from the following raw materials in parts by weight:

18 parts of carboxyl-containing anionic waterborne polyurethane, 13 parts of waterborne polyether sulfone resin, 8 parts of polyurethane cross-linking agent (B), 7 parts of waterborne silicone resin, 4 parts of isodecyl methacrylate (IDMA), 7 parts of guar gum, 2 parts of thickening agent, 4 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 20 parts of waterborne fluorocarbon resin, 5 parts of vanillin, 3 parts of light stabilizer, 5 parts of isopropanol, 2 parts of polyvinyl formal, 2 parts of dodecanol ester, 4 parts of isothiazolinone derivative, 2 parts of silicone acrylic emulsion, 3.5 parts of polytetrafluoroethylene and 2 parts of wax assistant.

The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.

The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.

The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.

The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m²More than g.

The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.

The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.

The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.

The preparation method of the water-based paint composition comprises the following steps:

step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 50 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;

step 2: heating to 80 ℃ and reacting for 2 h;

and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;

and 4, step 4: cooling to 50 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;

and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;

step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.

Comparative example 1

The procedure was essentially the same as in example 1 except that the raw materials for preparing the aqueous coating composition lacked the thickener, the aqueous silicone resin, and the silicone-acrylate emulsion.

Comparative example 2

Essentially the same procedure as in example 1 was followed except that the starting materials for the preparation of the aqueous coating composition were absent of the thickener.

Comparative example 3

The procedure was essentially the same as in example 1, except that the starting materials for the preparation of the aqueous coating composition lacked the aqueous silicone resin.

Comparative example 4

Essentially the same procedure as in example 1, except that the raw materials used to prepare the aqueous coating composition were absent of the silicone-acrylic emulsion.

The coating mixtures prepared in examples 1 to 6 were coated on the mixtures prepared in examples 1, 2, 3, 4, 5 and 6 using 6 different templates.

The coating mixtures prepared in comparative examples 1 to 3 were coated with the mixtures prepared in comparative example 1, comparative example 2 and comparative example 3, respectively, using 3 different templates.

Examples 1 to 6 and comparative examples 1 to 3 were subjected to the following tests:

item 1: the coated template is aired for 48 hours, and the template is solidified without cracking and crazing and is qualified;

item 2: dripping water on the painting template for 144 hours, and determining the painting template to be qualified without appearance change;

experimental groups	Item 1	Item 2
			Example 1	Qualified	Qualified
Example 2	Qualified	Qualified
			Example 3	Qualified	Qualified
Example 4	Qualified	Qualified
			Example 5	Qualified	Qualified
Example 6	Qualified	Qualified
			Comparative example 1	Crack(s)	Spots appeared
Comparative example 2	Crack(s)	Spots appeared
			Comparative example 3	Crack(s)	Micro spots
Comparative example 4	Crack(s)	Micro spots

As can be seen from the above table, the data of examples 1-6 and comparative examples 1-3 show that the performance of the coating mixture of examples 1-6 is significantly improved, and the retention of the coating by adding the thickener, the water-based silicone resin and the silicone-acrylate emulsion to the raw materials is significantly improved. Meanwhile, the thickening agent, the water-based silicone resin and the silicone-acrylate emulsion are added into the raw materials to play a synergistic role, so that the retentivity of the coating is effectively improved, which may be:

the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, the thickening effect is achieved through intermolecular association, the medium and high shear viscosity can be effectively improved, the thickening ratio is proper, the excellent flowing and leveling property and the gloss showing property are endowed to the inner and outer wall coatings, and the film forming property is improved. The thickening agent and the water-based silicone resin interact to improve the adhesive force of the coating mixture, the thickening agent has better thickening effect on 50nm fine-particle-size silicone-acrylate emulsion, and good leveling property and coating film fullness are provided. In addition, the aqueous silicone resin and the thickening agent have excellent formula compatibility, can effectively improve high-shear viscosity, and have excellent coating film fullness, splash resistance, water resistance and water diversion resistance. The silicone-acrylic emulsion has strong adsorption effect on the thickening agent, and can improve the stability of the high-coating mixture after solidification. The water-based emulsion formed by graft copolymerization of the acrylate component and the organic silicon monomer in the silicone-acrylate emulsion can promote the adhesive force of the coating.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.