TWI726238B - Water-based environmentally friendly paint and preparation method thereof - Google Patents

Abstract

The present invention provides a water-based environmentally friendly paint, which comprises: a base material, wherein the weight percentage of the base material is 40-50%; an acrylic resin, wherein the weight percentage of the acrylic resin is 40-50%; and a deionization Water, wherein the weight percentage of the deionized water is 5-15%. The present invention has developed a water-based environmentally friendly paint that is different from the market on the market after a long period of environmental testing. It contains the seven-effect all-in-one functions of heat insulation, waterproofing, rust prevention, anti-fog, dustproof, mildewproof, and antifreeze. Can meet the needs of different customers.

Description

Water-based environmentally friendly paint and preparation method thereof

The invention relates to a water-based environmentally friendly paint and a preparation method thereof, in particular to an acrylic polymer water-based paint.

Coatings are widely used in daily life, such as building walls, furniture floors, wooden houses, automobiles, 3C product surface painting, etc. At present, solvent-based coatings (generally called paints, which require the addition of organic solvents as thinners) are the most used. Because paint will produce a large amount of volatile organic compounds (VOCs) such as toluene, xylene, and formaldehyde during use, which will cause air pollution and threaten human health. Therefore, laws and regulations in various countries are increasingly restricting the use and use environmentally friendly water diluted with water. Coatings will be the global green trend in the future.

Water-based paint uses water as a diluent, and its composition does not contain toxic solvents and heavy metal compounds. It is a safe, pollution-free and environmentally friendly paint. However, the currently marketed water-based paints are roughly divided into basic two-in-one products such as water-based heat insulation and waterproof paints and water-based fire-resistant paints, which have other functional requirements for users, such as: anti-rust, anti-fog, and anti-freeze The selectivity of products such as dust-proof function is relatively low. In addition, the thermal insulation temperature of generally commercially available water-based coatings is mostly around 10 degrees C. For the trend of getting hotter and hotter in summer, the thermal insulation effect is obviously insufficient.

In view of this, there is a need to provide a water-based environmentally friendly coating and a preparation method thereof, which can solve the above-mentioned problems.

The problem to be solved by the present invention is to provide a water-based environmental protection paint, which can solve the problem that oil-based paint is harmful to the human body and is not environmentally friendly, and the general commercial water-based paint lacks anti-rust, anti-fog, anti-freezing, dust-proof and heat-insulating effects. Obvious problem.

In order to achieve the above objective, the present invention discloses a water-based environmentally friendly paint, which comprises: a base material, wherein the weight percentage of the base material is 40-50%; an acrylic resin, wherein the weight percentage of the acrylic resin is 40- 50%; and a deionized water, wherein the weight percentage of the deionized water is 5-15%.

Another object of the present invention is to provide a method for preparing a water-based environmentally friendly paint, which includes the following steps: pulverizing and grinding a microbead to obtain a second filler; and mixing the water-based acrylic resin with deionized water at room temperature Mix first, and stir for 15-20 minutes at a stirring speed of 2000 rpm to form an aqueous acrylic emulsion; add an additive to the aqueous acrylic emulsion and stir for 15-20 minutes at a stirring speed of 2000 rpm. To become a first mixture; then add a first filler to the first mixture, and stir for 30-40 minutes at a stirring speed of 80 rpm to become a second mixture, wherein the first filler is The above-mentioned base material; and the second filler and the second mixture are mixed and mixed uniformly to obtain a water-based environmentally friendly paint.

The effects of the present invention are mainly reflected in: 1. It is harmless, safe and environmentally friendly to the human body; 2. It has seven functions such as heat insulation, anti-fog, anti-rust, dust-proof, waterproof, anti-freeze and anti-mildew; 3. Short process time and low cost.

S100~S500‧‧‧Step

Figure 1 is a flow chart of the preparation method of the water-based environmentally friendly paint of the present invention; Figure 2 is the frost resistance analysis diagram of Example 1 of the present invention; Figure 3 is the water-proof, anti-rust and anti-fog analysis diagram of Example 1 of the present invention; and Figures 4 is the natural environment test analysis diagram of Example 1 of the present invention.

The present invention provides a water-based environmentally friendly paint, which is characterized in that it contains a base material, wherein the weight percentage of the base material is 40-50%; an acrylic resin, wherein the weight percentage of the acrylic resin is 40-50%; and Deionized water, wherein the weight percentage of the deionized water is 5-15%. The composition of the base material includes a titanium dioxide, a mica powder, a talc powder, a kaolin powder, a diatomaceous earth, zinc monoxide, a quartz powder, a calcium carbonate, a zinc phosphate, and a lithopone , A bentonite powder, a photocatalyst powder, a barium sulfate, a reflective powder, a zeolite powder and a microbead and other ingredients.

About Titanium Dioxide: Titanium Dioxide, also known as Titanium Dioxide, is a white non-toxic inorganic pigment with opacity and the best whiteness and brightness. Its component structure can be divided into rutile type and anatase type. Further, the titanium dioxide used in this case can also be GR composite titanium dioxide pigment, which has the same performance as rutile titanium dioxide and has strong absorption of ultraviolet light. The efficiency of barrier, and GR composite titanium dioxide pigment can greatly reduce the cost of materials, so it is better to use GR composite titanium dioxide pigment.

About mica powder: The mica powder used in this case can reflect light and heat and reduce the damage of ultraviolet light and other light and heat to the paint film, increase the acid, alkali and electrical insulation properties of the coating, so that it can reflect light and heat. The coating is bright and beautiful, improving the durability, frost resistance, corrosion resistance, toughness and compactness of the coating, reducing the air permeability of the coating, preventing spots and cracks, improving oil and water erosion resistance, and preventing paint precipitation. It is also the preferred filler for important anti-corrosion coatings. Among them, sericite powder is recommended for heavy-corrosion coating systems. The specific application method is: zinc phosphate (aluminum phosphate): zinc oxide: sericite powder = 1:0.25:1.25, which has a significant anti-corrosion effect.

The mica powder is selected from the group consisting of muscovite powder, sericite powder, magnesia-silica muscovite powder, and phlogopite powder.

About talcum powder: The talcum powder used in the present invention is mainly used in paints and coatings to provide resistance to sun exposure and high temperature, and does not change color under ultraviolet light. It can maintain the original luster and color for a long time, and has better Acid and alkali corrosion resistance, good water resistance, pollution resistance, strong aging resistance, abrasion resistance, steam resistance and strong flame retardancy.

About kaolin: The kaolin used in the present invention is better than titanium dioxide in terms of surface activity and adsorption properties when used in paints and coatings, and can improve the viscosity stability of paints and coatings, the stone-strike resistance of the coatings, and the coatings. Brushability, moisture resistance, anti-floating and blooming properties of pigments are good for its absorption. It can be used in special paints for ship hulls to enhance the abrasion resistance and fire resistance of the paint or enhance the anti-wear properties in tires. The kaolin described herein may also be calcined kaolin.

Regarding diatomaceous earth: the diatomaceous earth used in the present invention is used in coatings, mainly to help humidity control, cooling, and sound insulation.

About zinc oxide: Paints containing zinc oxide can be used as anti-corrosion coatings for metals. They are particularly effective on galvanized iron (white iron). It is difficult to protect iron materials with organic coatings, because the reaction of iron and organic coatings makes the coating The layer becomes brittle, and the adhesion is insufficient. The zinc oxide coating can maintain the toughness and adhere to the iron surface for a long time.

Regarding quartz powder (silica): the main mineral component of quartz powder is silicon _{dioxide (SiO 2} ), and its advantages in coatings are: 1. Replace expensive titanium dioxide, thereby reducing production costs; 2. Filling and compatibilization ; 3. No organic pollution; 4. Reduce grinding time; 5. Strong adhesion and fast drying, suitable for architectural coatings.

About calcium carbonate: Superfine calcium carbonate used in coatings has a steric hindrance effect, which can partially replace titanium dioxide to reduce production costs. In the paint film, it can suspend the denser lithopone in the formulation to prevent sedimentation. After the paint is made, the whiteness of the paint film is increased, the gloss is high, and the hiding power is not reduced. This performance makes the coating industry widely promoted. Used in the production of latex paint, it has anti-settling effect and can reduce the amount of dispersant added. Ultrafine heavy calcium that has been actively treated by chelating coating dispersion coupling agent is used in coatings, which can also significantly increase the coloring strength of the coating. Reflective ability, thereby enhancing the gloss of the paint film, increasing the covering power, improving the abrasion resistance and adhesion, enhancing the impact strength of the paint film and increasing the flexibility. The application in the water-based coating industry is more versatile and can make the paint less Settling, easy to disperse, good gloss and other characteristics, the amount of water-based paint is 20-60%. The calcium carbonate mentioned herein can also be ultrafine calcium carbonate, the particle size of which is below 1 μm.

About Lithopone: It can be used as a filler in paint coatings to replace more expensive raw materials such as precipitated molybdenum sulfate, titanium dioxide, active silica, etc. It is suitable for controlling the viscosity of paint, making the product bright and stable. The lithopone may further be titanated lithopone, which contains at least 13% TiO2, no more than 87% lithopone, 30% ZnS, their specific gravity is 4.18~4.30, and the oil absorption is 9 ~25 lbs of oil/100 lbs of paint, less than 0.2% does not pass the No. 325 sieve.

About the photocatalyst powder: The photocatalyst powder is micro-nano-level titanium dioxide, which has the effect of prolonging the cleanness and gloss of the coating surface, and is mainly used for self-cleaning.

About barium sulfate: Barium sulfate is a white powder, insoluble in water, acid, alkali, ethanol, ether and other organic solvents. It is soluble in boiling hydrochloric acid, and it is thermally reduced to barium sulfide with carbon. Its chemical properties are stable, no chemical reaction occurs in the air and normal temperature, and it will not change color when it encounters hydrogen sulfide or toxic gases in the air. It is heat-resistant, acid-resistant, alkali-resistant, and has a strong coverage rate, and can be used for contact products. Moderate hardness, good dispersion, can absorb toxic rays (X-rays and η rays) and other characteristics, and has flame retardancy and electrical insulation, with glass luster, non-magnetic and toxic characteristics. Used as a weighting agent for mud in oil drilling, also used in paints, ceramics, batteries, enamels, etc., can also be used as a surface coating agent, sizing agent, making lithopone, and can also be used as paper, paint, coating, rubber and other products The filler can also be used to extract metal barium, and can be used as a getter and binder for TVs and other vacuum tubes. Barium can be alloyed with other metals (aluminum, magnesium, lead, calcium) for bearing manufacturing, etc. It can replace part of titanium dioxide, used in acid-resistant rubber products and general products. The performance of synthetic barium sulfate is better than that of natural products. It has high whiteness, fine texture, anti-blooming, anti-rust pollution, and is one of the commonly used fillers in architectural coatings.

1.90、ND

1.93、ND

2.2，其規格從100目到500目可分級提供，顏色有銀灰色及白色供選擇。其主要採用高折射率玻璃珠後半表面鍍鋁作 為後向反射器，具有極強的逆向回歸反射性能，能將85%的光線直接反射回光源處，回歸反射所造成的反光亮度，可使駕駛人員和帶光源的夜間作業人員在夜間或視野不佳的情況不清楚地看見行人和障礙目標，確保雙方安全。 About reflective powder: reflective powder is produced from a kind of glass microbead powder material, divided into three refractive indexes, namely: ND

1.90, ND

1.93, ND

2.2. The specifications can be graded from 100 to 500 meshes, and the colors are silver gray and white for choice. It mainly uses high-refractive-index glass beads with aluminum on the rear surface as a retroreflector. It has strong retroreflective performance and can reflect 85% of the light directly back to the light source. The reflective brightness caused by retroreflectivity can make driving Personnel and night-time operators with light sources can clearly see pedestrians and obstacles at night or in poor vision conditions to ensure the safety of both parties.

Regarding microbeads: the microbeads used in the present invention are selected from the group consisting of foamed glass microbeads, hollow glass microbeads, fly ash hollow glass microbeads and hollow ceramic microbeads. Among them, the hollow glass beads are hollow spheres with tiny sizes, which are inorganic non-metallic materials, with a particle size range of 10-180 micrometers (μm), and a bulk density of 0.1-0.25 grams square centimeters. They have light weight, low thermal conductivity, and sound insulation. , High dispersion, electrical insulation and thermal stability.

The hollow glass beads of fly ash generally contain 50-80% of the hollow glass beads in fly ash, with a fineness of 0.3-200 μm, of which less than 5 μm accounts for 20% of the total amount of fly ash. The hollow microspheres separated from fly ash can be divided into sinking beads and floating beads according to their relative density. Compared with floating beads, sinking beads have the characteristics of wall thickness, large volume, high strength and better wear resistance.

Hollow ceramic microbeads are a kind of light non-metallic multifunctional material. The main components are SiO2 and Al2O3. It has good dispersibility, high hiding power, high whiteness up to 92% or more, good suspension, good chemical stability, good plasticity, High heat-resistant temperature, low density, low loss on ignition, good light scattering, good insulation, can improve the paint's adsorption, weather resistance, durability, scrub resistance, corrosion resistance and high temperature resistance, improve the mechanical properties of the paint film, Increase transparency, improve fire resistance, and can be used in anticorrosive, fireproof, high temperature resistant, powder paint coatings.

Regarding acrylic resin: The acrylic resin used in the present invention is a thermoplastic resin of a water-based acrylic resin (aqueous acrylic resin, poly(1-carboxyethylene), poly(acrylic acid)). It is copolymerized by acrylate and methacrylate monomers. The main absorption peak of the acrylic resin for light is outside the solar spectrum range, so the acrylic resin paint prepared has excellent light resistance and outdoor aging performance.

Many domestic and foreign literatures on the polymerization of water-based acrylic emulsion mostly mention the structure of core-shell and other emulsion particles. For example, a variety of structures such as core-shell, half moon, multi-core, hollow and strawberry should be reported. Although the description of these structures is helpful to understand the complexity of the particle structure of water-based acrylic emulsion, in fact, the structure of water-based acrylic emulsion is too complicated. many. For example, as long as there is no emulsion with single-phase structure particles, the particles in the practical water-based acrylic emulsion are distributed in various structures, which may have more core-shells, or more strawberries, and so on. The aqueous acrylic emulsion provided by the present invention controls the phase structure of the aqueous acrylic emulsion through process conditions such as the selection of monomers, the order of addition, the use of surfactants, and the like.

In addition, the water-based environmentally friendly paint provided by the present invention may further include an ethylene-vinyl acetate copolymer latex.

Ethylene-vinyl acetate copolymer latex (VAE, water-based vinyl acetate, Vihyl-Acetate Ethylene Copolymer) is based on vinyl acetate and ethylene monomer as the basic raw materials, adding emulsifier and initiator through high-pressure emulsion polymerization. Molecular emulsion.

VAE emulsion can resist UV aging. Because VAE emulsion uses ethylene as the internal plasticizer of the copolymer, it makes the VAE polymer have internal plasticization, and the plasticization will not be over-shifted, thus avoiding polymer aging. Therefore, it is not only VAE emulsion has good stability to ultraviolet rays, even after the film is formed, the stability of VAE emulsion can also be maintained.

VAE emulsion has good film-forming properties. The emulsion adhesive can only form a transparent film at a certain temperature. This temperature is called the minimum film-forming temperature. The minimum film-forming temperature of VAE is generally lower than 5℃, so it can form a good film. It has good barrier properties to water droplets.

VAE emulsion can be used as the base of coatings. The coatings made with vinyl acetate emulsion, acrylic emulsion, VAE emulsion, styrene butadiene emulsion, propylene benzene emulsion, vinegar benzene emulsion, etc. as base materials are collectively called latex paint. VAE latex paint can be used as interior and exterior wall coatings, roof waterproof coatings, fire-resistant coatings, and anti-rust coatings. The coating film of VAE latex paint has good foaming resistance, aging resistance and not easy to crack. It has good adhesion to a variety of substrates, is safe and non-toxic, and is easy to use. VAE latex paint can not only be applied to wood, masonry and concrete, but also can be applied. The surface of metal, glass, paper, and fabric has a good affinity with paint and can be painted on each other. VAE emulsion has good acid and alkali resistance. VAE emulsion can maintain stable performance in the presence of weak acid and weak base. Therefore, it will not mix with weak acid or weak base, and will not cause demulsification. The product application range is relatively large. wide.

In addition, in order to make the present invention have better usability, further, the water-based environmental protection coating provided by the present invention further includes: an auxiliary agent, wherein the auxiliary agent is selected from the group consisting of coating dispersant, coating film-forming auxiliary, water-based leveling Agent, defoaming agent, rheological additive (thickener), trimethylhexadecylammonium chloride (CTAC, CETAC), silane coupling agent (3-Glycidoxypropyltrimethoxysilane, KH560), protective agent ( Solid Film Protect Reagent, DJB-823) and preservatives.

The water-based environmentally friendly paint provided by the present invention may further include a nano-powder, wherein the nano-powder system is selected from nano-Silicon Carbide (Nano-Silicon Carbide, Sic), nano-zinc oxide ( Nano-Zinc Oxide, Graphene Oxide (GO), Graphite Nano Powder, Nano-Cobalt Oxide, Nano-Iron(II)Iron(III)Oxide ), Nano-Zinc Oxide, Nano-Zirconium Dioxide (Nano-Zirconium (IV) Oxide), Nano-Molybdenum Carbide, Nano-Tungsten Carbide (Nano- Tungsten Carbide) and Nano-Zinc Oxide (Nano-Zinc Oxide).

About Nano Powder:

1. Nano-Silicon Carbide (Nano-Silicon Carbide, Sic), which is gray-green in color, has a purity of >99.6%, an average particle size of 50nm, a specific surface area of 60m2/g, and good wave absorption. Light weight, stable chemical properties, high thermal conductivity, low thermal expansion coefficient, oxidation resistance at high temperatures, and a wide range of high temperature resistance, ranging from room temperature to 1000%.

2. Nano-Zinc Oxide (Nano-Zinc Oxide) has a light weight, a specific surface area of 80*60m2/g or more, a light color and a strong ability to absorb waves. Not only can it effectively absorb radar waves, it also has a strong ability to absorb infrared rays. It has extremely excellent comprehensive properties that ordinary zinc oxide does not have, and is a multi-functional inorganic wave-absorbing material.

3. Graphene Oxide (GO), which is a new type of absorbing material with the highest mechanical strength, is the thinnest, hardest and softest two-dimensional nanomaterial found in the world. Its two-dimensional The flaky structure is more conducive to the absorption of electromagnetic waves. The graphene oxide selected in the present invention is preferably graphene oxide JCGO-2. The purity of graphene oxide JCGO-2 is >99%, the diameter is 1.5μm, and the thickness is 0.8~1.2nm. , The specific surface area can be as high as 2500m2/g or more.

4. Graphite nanopowder has high purity, small fineness and uniformity, and high surface activity. It can be fully used in coatings and resins. Surface-treated graphite nanopowder can solve the dispersibility problem and overcome the agglomeration of nano-material powder. phenomenon.

5. Nano-Cobalt Oxide: Ultra-fine cobalt powder through a special process, narrow particle size distribution range, controllable size, soluble in acid, magnetic, easy to oxidize in humid air, easy to disperse and industrial application .

6. Nano-Iron(II)Iron(III)Oxide: Nano-Iron(II)Iron(III)Oxide: Nano-magnetic Fe3O4, small particle size, easy to disperse, wide range of applications, with iron magnetism, can be used Pigments, anti-ultraviolet materials, microwave absorbing materials, lithium battery materials, and lithium iron phosphate raw materials are widely used, with controllable particle size, spherical shape, narrow particle size distribution range, and good fluidity.

7. Nano-Zinc Oxide (Nano-Zinc Oxide), with high surface activity, has the functions of shielding infrared rays, ultraviolet rays, sterilization and health care, cooling or keeping warm. Used in high-end paints, inks, coatings, and various rubbers, it can significantly improve the hiding power and coloring power of the product, and greatly improve the antibacterial properties. It can be used as a cosolvent for emulsion glazes in the ceramic industry.

8. Nano-Zirconium Dioxide (Nano-Zirconium Dioxide; Nano-Zirconium (IV) Oxide), with small particle size, strong stability, acid resistance, alkali resistance, corrosion resistance, high temperature resistance, can be used for functional ceramics and structures Ceramics, as well as gem materials, have a much better performance than micron-sized zirconia.

9. Nano-Molybdenum Carbide (Nano-Molybdenum Carbide), which is a close-packed hexagonal lattice, also has a face-centered cubic lattice. Anaerobic acid does not react with molybdenum carbide, but it dissolves in nitric acid and aqua regia, and precipitates carbon , The density is 9.189g/cm ³ , the melting point is 2690±50℃, it has high melting point and high hardness, good thermal and mechanical stability, and excellent corrosion resistance. It can be used as a coating material or as an additive material, and is widely used in various fields such as high temperature resistance, abrasion resistance and chemical corrosion resistance.

10. Nano-Tungsten Carbide, with high purity, uniform fineness, and good dispersion, is an important raw material for the production of cemented carbide. Nano-Tungsten Carbide powder can make cemented carbide have many more excellent characteristics. Melting point 2860±50°C, boiling point 6000°C, insoluble in ice water, strong acid resistance, high hardness, large amount of elastic film, tungsten carbide is known as the hard king, in addition to high hardness, it also has abrasion resistance, corrosion resistance, high temperature resistance, etc. characteristic. It is mainly used in composite materials to improve their performance. Nano tungsten carbide-cobalt (WC-Co) composite powder is the main raw material for preparing high-performance cemented carbide and wear-resistant coatings. The nano-WC-Co composite powder used as a wear-resistant coating material has shown good results. The coating prepared by thermal spraying technology with rapid melting and rapid condensation can maintain the nanostructure characteristics of the powder, thereby significantly improving The performance of hard alloy wear-resistant coating.

11. Nano-Zinc Oxide: The present invention is an aqueous slurry dispersion of nano-zinc oxide, which is non-toxic, odorless, uniformly dispersed, does not deteriorate, has strong ability to absorb ultraviolet light (UV resistance), has sunscreen, Antibacterial and partial deodorizing function. Nano-zinc oxide is used in the field of coatings, which can make the coating surface feel good (smooth), increase the drying speed (crosslinking speed), wear resistance and smoothness, use in the rubber field can reduce the amount of rubber and improve rubber products It has the characteristics of anti-aging and prolonged life.

Furthermore, when the water-based environmentally friendly paint of the present invention is a paint primer type, it further contains a cement component.

Please refer to Figure 1. Figure 1 is a flow chart of the preparation method of the water-based environmentally friendly paint of the present invention. The present invention provides a method for preparing a water-based environmentally friendly paint, which includes the following steps: pulverize and grind a microbead to obtain a second filler (S100); at room temperature, the water-based acrylic resin and deionized water are mixed first , And stir for 15-20 minutes at a stirring speed of 2000 rpm to form an aqueous acrylic emulsion (S200); add an additive to the aqueous acrylic emulsion, and stir for 15-20 minutes at a stirring speed of 2000 rpm , To become a first mixture (S300); then add a first filler to the first mixture, and stir for 30-40 minutes at a stirring speed of 80 rpm to become a second mixture (S400) And mixing the second filler with the second mixture, and then mixing uniformly to obtain a water-based environmentally friendly paint (S500). The first filler is the base material of the above-mentioned water-based environmentally friendly paint of the present invention.

Furthermore, in the preparation method of the water-based environmentally friendly paint of the present invention, the second filler can be further subjected to a sieving step to be divided into microbeads of various particle sizes.

Example 1

An optimized water-based environmentally friendly paint whose components are calculated in weight percentages: 15% titanium dioxide, 2% muscovite powder, 3% diatomaceous earth, 5% talc, 3% kaolin, 1% zinc oxide, quartz powder (two Silica) 3%, photocatalyst powder 3%, hollow glass beads 10%, water-based acrylic resin 45%, and deionized water 10%. The hollow glass beads have a particle size of 70μm, a particle size of 65μm, and Four hollow glass beads with different particle sizes, 60 μm and 45 μm, respectively occupy the ratio of 2:3:3:2 of the total hollow glass beads.

An optimized water-based environmental protection coating preparation method, which includes the following steps: a. First, the hollow glass beads are crushed and ground, and then the hollow glass beads are sieved to obtain a particle size of 70μm and a particle size. 65μm, 60μm and 45μm hollow glass beads with different particle sizes, ready for use; b. Prepare a water-based acrylic emulsion: add water-based acrylic resin and deionized water into a mixer at room temperature to stir Under the condition of a speed of 2000 rpm, stir for 15 minutes for mixing; c. Add coating film-forming aids, coating dispersants, defoamers, and preservatives to the aqueous acrylic emulsion prepared in step b above, and stir at a speed of 2000 rpm Under the conditions, stir for 15 minutes to become the first mixture of barrier type thermal insulation coating; d. Add titanium dioxide, muscovite powder, diatomaceous earth, talc, kaolin, zinc oxide, to the first mixture obtained in step c Quartz powder (silica) and photocatalyst powder are stirred for 30 minutes at a stirring speed of 80 rpm to become the second mixture of barrier-type thermal insulation coatings; e. Finally, the four different particle sizes obtained in step a The hollow glass beads are 70μm in diameter, 65μm in diameter, 60μm in diameter and 45μm in diameter respectively. They are mixed with the second mixture in a ratio of 2:3:3:2, and an optimized water quality is obtained after uniform mixing. Environmentally friendly paint.

The optimized water-based environmentally-friendly paint prepared above was subjected to heat insulation test. Please refer to Table 1-1. The results show that the temperature difference between before and after the film can be as high as 20°C, indicating the optimized water-based environmentally friendly paint of the present invention Can effectively reduce the heat transfer rate. The indoor closed test was carried out under the conditions of using a bulb to simulate outdoor sunlight in a closed house, and the four sides of the simulated house were composed of iron sheets to simulate a more severe environment. Since the thickness of the paint will affect the heat insulation effect, it is recommended that the spraying thickness be 0.5mm.

Further, the frost resistance test of the optimized water-based environmentally friendly paint is performed. Please refer to Figure 2. Figure 2 is a frost-resistant analysis diagram of Example 1 of the present invention. The result shows that the coating of the optimized water-based environmentally friendly paint is placed on After seven days at minus 23°C, there was no blistering or cracking on the coating surface, indicating that the optimized water-based environmentally friendly coating of the present invention has anti-freezing function.

Then, the optimized water-based environmentally friendly paint is tested for waterproofing, rust-proofing, and anti-fog. Please refer to Figure 3. Figure 3 is a water-proof, rust-proof and anti-fog analysis diagram of Example 1 of the present invention. The results show that the spray coating will be sprayed. After placing the coating of the optimized water-based environmentally friendly paint in high-concentration salt water (approximately the concentration of NaCl) for two months, there is no embroidered blistering or cracking on the coating surface, indicating the optimized water-based coating of the present invention The environmental protection coating has the functions of waterproof, anti-rust and anti-fog.

Furthermore, the optimized water-based environmental protection paint is subjected to the natural environment test. Please refer to Fig. 4. Fig. 4 is a natural environment test analysis diagram of Example 1 of the present invention. The result shows that 0.5mm of the optimized water-based water is sprayed on the surface of the iron sheet house. The test coating of the environmental protection coating has been tested in the natural environment of sunlight and wind and rain for more than one year. The surface has no embroidered blistering, cracks, etc., indicating that the optimized water-based environmental protection coating of the present invention has heat insulation, Anti-fog, anti-rust, anti-dust, waterproof, anti-freeze and anti-mildew functions in one.

Example 2

A barrier type thermal insulation coating whose components are calculated by weight percentage: diatomaceous earth 10%, titanium dioxide 10%, zinc oxide 1%, quartz powder 5%, kaolin 5%, hollow glass beads 10%, hollow ceramic beads 4%, 45% of water-based acrylic resin and 10% of deionized water, wherein the hollow glass microspheres include four hollow glass with different particle sizes with a particle size of 70μm, a particle size of 65μm, a particle size of 60μm and a particle size of 45μm The microbeads respectively occupy a ratio of 2:3:3:2 of the total hollow glass microbeads.

Among them, the water-based acrylic resin contains additives, which are added to change the performance of the coating during the mixing process of the coating. The additives are 3% of the coating film forming aid, 2% of the coating dispersant, 0.3% of the defoamer, and 0.1% of the preservative. ~0.2%.

A method for preparing a barrier-type heat-insulating coating, which comprises the following steps: a. First, the hollow glass beads and the hollow ceramic beads are crushed and ground, and then the hollow glass beads are sieved to obtain the particle size after grinding. Four hollow glass beads with different particle sizes of 70μm, particle size of 65μm, particle size of 60μm and particle size of 45μm, ready for use; b. Preparation of a water-based acrylic emulsion: Add water-based acrylic resin and deionized water to the mixer at room temperature In the process, the stirring speed is 2000 rpm, stirring for 15 minutes for mixing; c. Add coating film forming aids, coating dispersants, defoamers, and preservatives to the aqueous acrylic emulsion prepared in step b above to stir Under the condition of a speed of 2000 rpm, stir for 15 minutes to become the first mixture of barrier type thermal insulation coating; d. Add diatomaceous earth, titanium dioxide, zinc oxide, quartz powder and kaolin to the first mixture obtained in step c, Stir for 30 minutes under the condition of a stirring speed of 80 rpm to become the second mixture of the barrier type thermal insulation coating; e. Finally, the hollow ceramic beads obtained in step a and the hollow glass beads of four different particle sizes are combined, The particle diameters are 70μm, 65μm, 60μm, and 45μm, respectively, which are mixed with the second mixture in a ratio of 2:3:3:2, and mixed uniformly to obtain a barrier type thermal insulation coating.

Example 3

A reflective thermal insulation coating whose composition is calculated by weight percentage: diatomaceous earth 3%, muscovite powder 6%, titanium dioxide 15%, zinc oxide 1%, quartz powder 5%, kaolin 5%, hollow glass beads 10 %, water-based acrylic resin 45% and deionized water 10%, wherein the hollow glass beads include four hollow glass microspheres with a particle size of 70μm, a particle size of 65μm, a particle size of 60μm and a particle size of 45μm. Beads, which respectively occupy the ratio of 2:3:3:2 of the total hollow glass microbeads.

Among them, the water-based acrylic resin contains additives, which are added to change the performance of the coating during the mixing process of the coating. The additives are 3% of the coating film forming aid, 2% of the coating dispersant, 0.3% of the defoamer, and 0.1% of the preservative. ~0.2%.

A preparation method of reflective heat-insulating paint, which comprises the following steps: a. Firstly, the hollow glass beads are pulverized and ground, and then sieved after grinding to obtain a particle size of 70μm, a particle size of 65μm, a particle size of 60μm and a particle size. Four hollow glass beads of different particle sizes with a diameter of 45 μm, ready for use; b. Preparation of an aqueous acrylic emulsion: Add the aqueous acrylic resin and deionized water to the mixer at room temperature, and the stirring speed is 2000 rpm. Stir for 15 minutes for mixing; c. Add coating film-forming aids, coating dispersants, defoamers, and preservatives to the aqueous acrylic emulsion prepared in step b above, and stir for 15 minutes at a stirring speed of 2000 rpm, In order to become the first mixture of reflective insulation coating; d. Add diatomaceous earth, muscovite powder, titanium dioxide, zinc oxide, quartz powder and kaolin to the first mixture obtained in step c, and the stirring speed is 80 rpm Next, stir for 30 minutes to become the second mixture of reflective thermal insulation coating; e. Finally, the four hollow glass beads with different particle sizes obtained in step a are 70μm in size, 65μm in size and 65μm in size. 60μm and a particle size of 45μm, mixed with the second mixture in a ratio of 2:3:3:2, and mixed uniformly to obtain a reflective thermal insulation coating.

Example 4

A heat-insulating primer type heat-insulating paint A. Its components are calculated in weight percentage: diatomaceous earth 5%, quartz powder 10%, kaolin 3%, foam glass beads 10%, hollow ceramic beads 2%, hollow glass Microbeads 10%, cement 5%, water-based acrylic resin 45%, and deionized water 10%. The hollow glass microbeads include four different types: 70μm, 65μm, 60μm, and 45μm. The hollow glass microspheres of the particle size respectively occupy the ratio of 2:3:3:2 of the total hollow glass microspheres.

Among them, the water-based acrylic resin contains additives, which are added to change the performance of the coating during the mixing process of the coating. The additives are 3% of the coating film forming aid, 2% of the coating dispersant, 0.3% of the defoamer, and 0.1% of the preservative. ~0.2%.

A preparation method of heat-insulating primer type heat-insulating paint A, which comprises the following steps: a. First, the foamed glass beads, hollow ceramic beads and hollow glass beads are crushed and ground, and then the hollow glass is ground. The microbeads are sieved to obtain four hollow glass microbeads of different particle sizes with a particle size of 70μm, a particle size of 65μm, a particle size of 60μm and a particle size of 45μm for use; b. Preparation of an aqueous acrylic emulsion: at room temperature, Add the water-based acrylic resin and deionized water into the mixer, and stir for 15 minutes under the condition of a stirring speed of 2000 rpm; c. Add coating film forming aids and coating dispersants to the water-based acrylic emulsion prepared in step b above , Defoamer, preservative, stir for 15 minutes at a stirring speed of 2000 rpm to become the first mixture of thermal insulation primer type thermal insulation paint A; d. Add silicon to the first mixture obtained in step c Algae earth, quartz powder and kaolin are stirred for 30 minutes at a stirring speed of 80 rpm to become the second mixture of the heat-insulating primer type heat-insulating paint A; c. The foamed glass beads obtained in step a, Hollow ceramic beads and four hollow glass beads with different particle sizes, with a particle size of 70μm, a particle size of 65μm, a particle size of 60μm, and a particle size of 45μm, mixed with the second mixture in a ratio of 2:3:3:2 , And finally add 20% cement and mix evenly to obtain a heat-insulating primer type heat-insulating paint A.

Example 5

A heat-insulating primer-type heat-insulating paint B. Its components are calculated by weight percentage: zinc oxide 1%, kaolin 10%, hollow ceramic beads 20%, zeolite powder 10%, quartz powder 4%, water-based acrylic resin 45%, and 10% deionized water, wherein the hollow ceramic beads have a particle size of 150μm.

Among them, the water-based acrylic resin contains additives, which are added to change the performance of the coating during the mixing process of the coating. The additives are 3% of the coating film forming aid, 2% of the coating dispersant, 0.3% of the defoamer, and 0.1% of the preservative. ~0.2%.

A preparation method of heat-insulating primer type heat-insulating paint B, which comprises the following steps: a. First, the hollow ceramic beads are pulverized and ground, and then the hollow ceramic beads are sieved to obtain a particle size of 150μm. Hollow ceramic microbeads of the size, ready for use; b. Preparation of an aqueous acrylic emulsion: at room temperature, the aqueous acrylic resin and deionized water are added to the mixer, and the stirring speed is 2000rpm under the condition of stirring for 15 minutes to mix; c. Add coating film-forming aids, coating dispersants, defoamers, and preservatives to the water-based acrylic emulsion prepared in step b, and stir for 15 minutes at a stirring speed of 2000 rpm to form a heat-insulating primer-type partition. The first mixture of thermal paint B; d. Add zinc oxide, zeolite powder, quartz powder, and kaolin to the first mixture obtained in step c, and stir for 30 minutes at a stirring speed of 80 rpm to become a thermal insulation primer The second mixture of type thermal insulation coating B; e. Finally, the hollow ceramic microspheres with a particle size of 150 μm obtained in step a are mixed with the second mixture, and after mixing uniformly, a thermal insulation primer-type thermal insulation coating B is obtained.

Example 6

A heat-insulating primer-type heat-insulating paint C, whose components are calculated by weight percentage: 1% zinc oxide, 10% kaolin, 20% hollow ceramic beads, 4% zeolite powder, 10% quartz powder, 45% water-based acrylic resin, and 10% deionized water, wherein the hollow ceramic beads have a particle size of 150 μm and 50 nm, respectively, which account for 1:1 of the total hollow ceramic beads.

Among them, the water-based acrylic resin contains additives, which are added to change the performance of the coating during the mixing process of the coating. The additives are 3% of the coating film forming aid, 2% of the coating dispersant, 0.3% of the defoamer, and 0.1% of the preservative. ~0.2%.

A preparation method of heat-insulating primer type heat-insulating paint C, which comprises the following steps: a. First, the hollow ceramic beads are pulverized and ground, and after grinding, the hollow ceramic beads are sieved to obtain the particle sizes respectively. Hollow ceramic beads of 150μm and 50nm in size, ready for use; b. Preparation of a water-based acrylic emulsion: Add water-based acrylic resin and deionized water into a mixer at room temperature, and mix for 15 minutes at a stirring speed of 2000 rpm. C. Add coating film-forming aids, coating dispersants, defoamers, and preservatives to the water-based acrylic emulsion prepared in step b above, and stir for 15 minutes at a stirring speed of 2000 rpm to become an insulating bottom The first mixture of lacquer-type thermal insulation coating C; d. Add zinc oxide, zeolite powder, quartz powder and kaolin to the first mixture obtained in step c, and stir for 30 minutes at a stirring speed of 80 rpm to become a spacer The second mixture of thermal primer type heat-insulating coating C; e. Finally, the hollow ceramic beads with a particle size of 150μm and 50nm obtained in step a are mixed with the second mixture at a ratio of 1:1, and the mixture is evenly mixed. A heat-insulating primer type heat-insulating paint C.

The present invention is only to present the preferred implementation or examples of the technical means used to solve the problem, and is not intended to limit the scope of implementation of the patent of the present invention, that is, everything that is consistent with the scope of the patent application of the present invention or made in accordance with the scope of the patent of the present invention Equal changes and modifications are all covered by the invention patent.

S100~S500‧‧‧Step

Claims (7)

A water-based environmentally friendly paint, which comprises: a base material, wherein the weight percentage of the base material is 40-50%, the base material includes more than one component of a zinc phosphate and a lithopone powder, and also includes mica powder-based silk Muscovite powder; an acrylic resin, wherein the weight percentage of the acrylic resin is 40-50%; and a deionized water, wherein the weight percentage of the deionized water is 5-15%. The water-based environmentally friendly paint described in item 1 of the scope of patent application, wherein the base material further includes titanium dioxide selected from the group consisting of GR composite titanium dioxide pigment, rutile titanium dioxide and anatase titanium dioxide. The water-based environmentally friendly paint described in item 1 of the scope of patent application, wherein the base material also includes microbeads selected from the group consisting of foamed glass microbeads, hollow glass microbeads, fly ash hollow glass microbeads and hollow ceramic microbeads In the group, the fly ash hollow glass beads are four kinds of fly ash hollow glass beads with a particle size of 70 μm, a particle size of 65 μm, a particle size of 60 μm, and a particle size of 45 μm, which respectively account for The overall ratio of fly ash hollow glass microspheres of 2:3:3:2 is added and mixed with the group of the composition. The water-based environmentally friendly paint described in item 1 of the scope of patent application, wherein the water-based environmentally friendly paint further contains a nano-powder, wherein the nano-powder system is selected from nano-Silicon Carbide (Nano-Silicon Carbide). , Sic), nano-zinc oxide (Nano-Zinc Oxide), graphene oxide (Graphene Oxide, GO), nano graphite powder, nano-cobalt oxide (Nano-Cobalt Oxide), nano-iron tetroxide (Nano- Iron(II)Iron(III)Oxide), Nano-Zinc Oxide, Nano-Zirconium Dioxide (Nano-Zirconium(IV) Oxide), Nano-Molybdenum Carbide ), Nano Tungsten Carbide (Nano-Tungsten Carbide) and Nano-Zinc Oxide (Nano-Zinc Oxide). The water-based environmental protection coating described in item 1 of the scope of patent application, wherein the water-based environmental protection coating further contains an auxiliary agent, wherein the auxiliary agent is selected from the group consisting of a coating dispersant, a coating film-forming auxiliary, a water-based leveling agent, and a defoaming agent , Rheology additives (thickener), Trimethylhexadecylammonium chloride (CTAC, CETAC), silane coupling agent (3-Glycidoxypropyltrimethoxysilane, KH560), protective agent (Solid Film Protect Reagent, DJB-823) and preservatives. A method for preparing a water-based environmentally friendly coating as described in item 1 of the scope of patent application, which comprises the following steps: pulverize and grind a microbead to obtain a second filler; at room temperature, remove the water-based acrylic resin Ionized water was mixed first, and stirred for 15-20 minutes at a stirring speed of 2000 rpm to form an aqueous acrylic emulsion; an additive was added to the aqueous acrylic emulsion and stirred at a stirring speed of 2000 rpm for 15-20 Minutes to become a first mixture; then add a first filler to the first mixture and stir for 30-40 minutes at a stirring speed of 80 rpm to become a second mixture. The filler is the base material as described in item 2 of the scope of the patent application; and the second filler is mixed with the second mixture, and after the mixing is uniform, a water-based environmentally friendly paint is obtained. As for the preparation method of the water-based environmental protection coating described in item 7 of the scope of patent application, the second filler can be further subjected to a sieving step.

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