TW202010803A - Water-based environmental protection paint and preparing method thereof capable of providing the functions of heat insulation, water resistance, rust prevention, salt fog prevention, dust prevention, mildew prevention and antifreeze - Google Patents

Abstract

The present invention provides a water-based environmental protection paint, which includes: a base material having a weight percentage between 40% and 50%; an acrylic resin having a weight percentage between 40% and 50%; and deionized water having a weight percentage between 5% and 15%. In the present invention, the water-based environmental protection paint has been developed after a long-term environmental test, therefore, it is different from those in the market, and it provides a seven-in-one function including heat insulation, water resistance, rust prevention, salt fog prevention, dust prevention, mildew prevention and antifreeze, thereby meeting the needs of different customers.

Description

Water-based environmental protection paint and preparation method thereof

The invention relates to a water-based environmental protection coating and a preparation method thereof, in particular to an acrylic polymer-based water-based coating.

Coatings are widely used in daily life, such as building walls, furniture floors, wooden houses, automobiles, 3C product surface spraying, etc. At present, solvent-based coatings (generally called paints, which require the addition of organic solvents as thinners) are used most. Due to the large amount of volatile organic compounds (VOCs) such as toluene, xylene, and formaldehyde in the paint during the use process, it causes air pollution and threatens human health. Therefore, regulations in various countries are increasingly restricting the use of water-diluted and environmentally friendly water. Paint 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 available waterborne coatings are roughly divided into basic two-in-one products such as water-based heat-insulating waterproof coatings and water-based fire-resistant coatings, which have other functional requirements for users, such as: anti-rust, anti-fog, anti-freeze And the selectivity of products such as dust-proof functions is relatively low. In addition, the thermal insulation temperature of generally commercially available water-based coatings mostly falls at about 10 degrees C. For the trend of hotter summer weather, the thermal insulation effect is also obviously insufficient.

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

The problem to be solved by the present invention is to provide a water-based environmental protection coating, which can solve the harmful and non-environmental protection of oily coatings on human bodies, and the lack of anti-rust, anti-fog, anti-freeze, dust-proof and thermal insulation effects of general commercially available aqueous coatings The obvious problem.

In order to achieve the above object, the present invention discloses a water-based environmental protection coating, which comprises: a binder, wherein the weight percentage of the binder 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 deionized water is 5-15%.

Another object of the present invention is to provide a method for preparing a water-based environmentally friendly coating, which includes the following steps: crushing and grinding a microbead to obtain a second filler; at normal temperature, the water-based acrylic resin and deionized water Mix first, and stir at a stirring speed of 2000 rpm for 15-20 minutes to become an aqueous acrylic emulsion; add an auxiliary to the aqueous acrylic emulsion and stir 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 at a stirring speed of 80 rpm for 30-40 minutes 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 evenly mixed to obtain a water-based environmental protection coating.

The efficacy of the present invention is mainly reflected in: 1. Harmless to human body, safe and environmentally friendly; 2. Has seven functions of heat insulation, anti-fog, anti-rust, dust-proof, waterproof, anti-freeze and anti-mildew; 3. The process time is short and low cost.

S100~S500‧‧‧Step

Fig. 1 is a flow chart of the preparation method of the water-based environmental protection coating of the invention; Fig. 2 is an antifreeze analysis diagram of Example 1 of the invention; Fig. 3 is an analysis diagram of waterproof, rust prevention and anti-fog of Example 1 of the invention; 4 is an analysis diagram of the natural environment test of Embodiment 1 of the present invention.

The present invention provides a water-based environmental protection coating, which is characterized by comprising 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 one 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 oxide, a quartz powder, a calcium carbonate, a zinc phosphate, a lithopone powder , A Pengrun soil powder, a photocatalyst powder, a barium sulfate, a reflective powder, a zeolite powder and a micro-bead and more than one component.

About titanium dioxide: Titanium dioxide is also known as titanium dioxide (Titanium Dioxide), is a white non-toxic inorganic pigment, with opacity and optimal whiteness and brightness. The composition structure can be divided into rutile type and anatase type. Furthermore, the titanium dioxide used in this case can also be GR composite titanium white pigment, which has the same performance as rutile titanium dioxide and has strong absorption of ultraviolet light. The effectiveness of the barrier, and GR composite titanium white pigment has greatly reduced the material cost, so it is better to use GR composite titanium white pigment.

About mica powder: The mica powder used in this case, when used in paint, 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 The coating is bright and beautiful, improves the durability, frost resistance, corrosion resistance, toughness and compactness of the coating and reduces the breathability of the coating, prevents spots and cracks, improves resistance to oil and water erosion, and can also prevent paint precipitation. It is also the filler of choice for important anti-corrosion coatings. Among them, it is recommended to use sericite powder in the heavy corrosion coating system. The specific method of use is: zinc phosphate (aluminum phosphate): zinc oxide: sericite powder = 1: 0.25: 1.25, its anticorrosive effect is remarkable.

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

Regarding talc powder: The talc powder used in the present invention is mainly used to provide exposure and high temperature resistance, and does not change color under ultraviolet light irradiation. It can maintain the original luster and color for a long time, and has better Acid and alkali corrosion resistance, and good water resistance, pollution resistance, strong aging resistance, wear resistance, steam resistance and strong flame retardant properties.

Regarding kaolin: The kaolin used in the present invention is more superior to titanium dioxide in surface activity and adsorption performance when used in paints and coatings, and can improve the viscosity stability of paints and coatings, the stone resistance of coatings, coating Brushability, moisture resistance, anti-floating and flowering properties of pigments, which facilitates its absorption, can be used for special paints of ship hulls, enhance the abrasion resistance, fire resistance of paints or enhance the abrasion resistance in tires. The kaolin described therein may further be calcined kaolin.

Regarding diatomaceous earth: The use of diatomaceous earth in the present invention in coatings can mainly help the effects of humidity control, cooling and sound insulation.

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

About quartz powder (silicon dioxide): 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 compatibilizing ; 3. No organic pollution; 4. Reduce grinding time; 5. Strong adhesion and fast drying, suitable for architectural coatings.

About calcium carbonate: Superfine calcium carbonate is used in coatings and has a steric hindrance effect. It can partially replace titanium dioxide to reduce production costs. In the paint film, it can suspend the denser lithopone powder in the formulation to prevent sedimentation. After the paint is made, the whiteness of the paint film increases and the gloss is high, but the hiding power does not decrease. This performance makes the coating industry widely promoted. Used in the production of latex paint, it has anti-settling effect, can reduce the amount of dispersant, etc. The ultra-fine heavy calcium activated by chelating paint dispersing coupling agent is used in paint, and it can also significantly increase the color strength and Reflective ability, thereby improving the gloss of the paint film, increasing the coverage, improving the abrasion resistance and adhesion, improving the impact strength of the paint film and increasing the flexibility. It is widely used in the water-based paint industry and can make the paint not Settling, easy to disperse, good gloss and other characteristics, the amount of water-based paint is 20~60%. The calcium carbonate mentioned herein may also be ultrafine calcium carbonate, the particle size of which is below 1 μm.

About Lide powder: It can be used as a filler for paint coatings to replace precipitated molybdenum sulfate, titanium dioxide, activated silica and other expensive raw materials. It is suitable for controlling the viscosity of paint, making the product bright and stable. The lithopone powder mentioned above may further be titanium lithopone powder, which contains at least 13% TiO2, not more than 87% lithopone powder, 30% ZnS, their specific gravity is 4.18~4.30, oil absorption 9 ~25 pounds of oil/100 pounds of pigment, less than 0.2% will not pass through No. 325 sieve.

About photocatalyst powder: Photocatalyst powder is micro-nano titanium dioxide, which has the effect of prolonging the cleanliness 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, acids, alkalis, nor organic solvents such as ethanol and ether, soluble in boiling hydrochloric acid, and reduced to barium sulfide by co-heating with carbon. Its chemical properties are stable, no chemical reaction occurs in the air and at normal temperature, and it does not change color when it meets hydrogen sulfide or toxic gases in the air. Heat-resistant, acid-resistant, alkali-resistant, and strong coverage, can be used for contact products. Moderate hardness, good dispersion, can absorb toxic rays (X-ray and η-ray) and other characteristics, and has the characteristics of flame retardancy and electrical insulation, with glass gloss, non-magnetic and toxic characteristics. Used as a weighting agent for mud in oil drilling, also used in pigments, ceramics, batteries, enamel, etc., can also be used as a surface coating agent, sizing agent, making zinc barium white, can also be used as paper, paint, coating, rubber and other products The filler can also be used to extract metal barium, can be used as a getter and binder for TV and other vacuum tubes. Barium can be alloyed with other metals (aluminum, magnesium, lead, calcium) in bearing manufacturing, etc. It can replace part of titanium dioxide for acid-resistant rubber products and general products. Synthetic barium sulfate has better performance than 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 glass microbead powder material, which is divided into three refractive indexes, namely: ND

1.90, ND

1.93, ND

2.2, its specifications can be graded from 100 mesh to 500 mesh, and the colors are silver gray and white. It mainly uses aluminum plated on the back half of the high-refractive index glass beads as the retro-reflector. It has extremely strong retro-reflective performance, and can directly reflect 85% of the light back to the light source. The reflective brightness caused by the retro-reflection can make driving Personnel and night workers with light sources see pedestrians and obstacle targets unclearly at night or in poor visibility, ensuring 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. Hollow glass microspheres are hollow spheres with tiny size. They are inorganic non-metallic materials. They have a particle size range of 10-180 microns (μm), a bulk density of 0.1-0.25 grams square centimeters, light weight, low thermal conductivity, and sound insulation. , High dispersion, electrical insulation and thermal stability.

The hollow glass microspheres of fly ash are generally 50-80% hollow glass microspheres in fly ash, and the fineness is 0.3-200 μm, of which less than 5 μm accounts for 20% of the total amount of fly ash. The sorted hollow microspheres in 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 capacity, high strength, and good wear resistance.

Hollow ceramic microbead is a light-weight non-metallic multi-functional material, the main components are SiO2 and Al2O3, good dispersion, high hiding power, high whiteness up to 92%, good suspension, good chemical stability, good plasticity, High heat resistance temperature, low density, low loss on ignition, good light scattering, good insulation, can improve the absorption, weather resistance, durability, scrub resistance, corrosion resistance and high temperature resistance of paint, improve the mechanical properties of paint film, Increase transparency, improve fire performance, can be used in anti-corrosion, fire, high temperature, powder paint.

Regarding acrylic resin: The acrylic resin used in the present invention is a thermoplastic resin of an aqueous acrylic resin (aqueous acrylic resin, poly(1-carboxyethylene), poly(acrylicacid)). It is made by copolymerization of acrylate and methacrylate monomer. The main absorption peak of light of this acrylic resin is outside the solar spectrum range, so the acrylic resin paint obtained has excellent light resistance and outdoor aging performance.

Many domestic and foreign literatures on water-based acrylic emulsion polymerization mostly mention the structural problems of core-shell and other emulsion particles. For example, various structures such as core-shell, half-moon, multi-core, hollow, and strawberry should be reported. Although the description of these structures is very helpful to understand the complexity of the particle structure of the aqueous acrylic emulsion, the structure of the aqueous acrylic emulsion is actually complicated. many. For example, as long as the emulsion of single-phase structure particles does not exist, the particles in the practical waterborne acrylic emulsion are distributed in various structures, which may have more core shells, more strawberries, and so on. The aqueous acrylic emulsion provided by the present invention controls the phase structure of the aqueous acrylic emulsion through the selection of monomers, the order of addition, the use of surfactants, and other process conditions.

In addition, the water-based environmental protection coating 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 emulsifiers and initiators and copolymerized by high-pressure emulsion polymerization. Molecular emulsion.

VAE emulsion can resist ultraviolet aging. Because VAE emulsion uses ethylene as the internal plasticizer of the copolymer, the VAE polymer has internal plasticization, and the plasticization will not over-shift, thus avoiding polymer aging. Therefore, not only VAE emulsion has good stability to ultraviolet rays, that is, VAE emulsion can also maintain its stability after film formation.

VAE emulsions have good film-forming properties. Emulsion adhesives 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 and film. Good barrier to water drops.

VAE emulsion can be used as a base for coatings. Coatings made with vinyl acetate emulsion, acrylic emulsion, VAE emulsion, styrene-butadiene emulsion, propylbenzene emulsion, and vinegar-benzene emulsion as base materials are collectively called latex paints. VAE latex paint can be used as interior and exterior wall coatings, roofing waterproof coatings, fire retardant coatings, and anti-rust coatings. VAE latex paint film has good resistance to foaming, aging resistance, cracking resistance and good adhesion to various substrates. It is safe, non-toxic and easy to use. VAE latex paint can be applied not only to wood, masonry and concrete, but also to coating The surface of metal, glass, paper, and fabric has good affinity with paint, and can be painted on each other's surface. 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 be mixed with weak acid or weak base, and will not produce emulsion breaking phenomenon. 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 paint dispersant, paint film-forming auxiliary agent, water-based leveling Agent, defoamer, rheology aid (thickening agent), trimethylhexadecylammonium chloride (CTAC, CETAC), silane coupling agent (3-Glycidoxypropyltrimethoxysilane, KH560), protective agent ( Solid Film Protect Reagent (DJB-823) and preservatives.

The water-based environmental protection coating provided by the present invention may further comprise a nano-powder, wherein the nano-powder system is selected from the group consisting of nano-ceramic powder silicon carbide (Nano-Silicon Carbide, Sic) and nano-zinc oxide ( Nano-Zinc Oxide), Graphene Oxide (GO), Nano Graphite 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 Tungsten Carbide) and Nano-Zinc Oxide.

About Nano Powder:

1. Nano-ceramic powder silicon carbide (Nano-Silicon Carbide, Sic), which is gray-green, with 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, anti-oxidation at high temperature, wide range of high temperature resistance, from room temperature to 1000%.

2. Nano zinc oxide (Nano-Zinc Oxide), light weight, specific surface area 80*60m2/g or more, light color absorption ability, not only can effectively absorb radar waves, but also has a strong ability to absorb infrared rays, It has extremely excellent comprehensive performance not possessed by ordinary zinc oxide, and is a multifunctional inorganic wave-absorbing material.

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

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

5. Nano-Cobalt Oxide (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-magnetic iron trioxide (Fe3O4), small particle size, easy to disperse, wide range of uses, with iron magnetic, can be done Pigments, anti-ultraviolet materials, microwave absorption materials, lithium battery materials, and lithium iron phosphate raw materials have a wide range of uses. Their particle sizes are controllable, spherical in shape, narrow in particle size distribution, and good in fluidity.

7. Nano-Zinc Oxide (Nano-Zinc Oxide), which has high surface activity, has the functions of covering infrared, ultraviolet and sterilization health care, cooling or warming. Used in high-grade paints, inks, coatings, and various rubbers, it can significantly improve the hiding power and coloring power of the product, and greatly improve the antibacterial property. It can be used as a cosolvent for emulsion glaze in the ceramic industry.

8. Nano-Zirconium Dioxide (Nano-Zirconium Dioxide; Nano-Zirconium (IV) Oxide), its particle size is small, strong stability, with acid resistance, alkali resistance, corrosion resistance, high temperature resistance, can be used for functional ceramics and structure Ceramics, as well as gem materials, have greatly improved performance compared to micron 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 soluble in nitric acid and aqua regia, and precipitate carbon , The density is 9.189g/cm ³ , the melting point is 2690±50℃, it has higher melting point and high hardness, good thermal stability and mechanical stability, and excellent corrosion resistance. It can be used as a coating material or as an additive material. It is widely used in various fields such as high temperature resistance, abrasion resistance and chemical corrosion resistance.

10. Nano-Tungsten Carbide (Nano-Tungsten Carbide), which has 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℃, boiling point 6000℃, 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 wear resistance, corrosion resistance, high temperature resistance, etc. characteristic. It is mainly used in composite materials to improve its performance. Nano tungsten carbide-cobalt (WC-Co) composite powder is the main raw material for the preparation of high-performance cemented carbide and wear-resistant coatings. Nano WC-Co composite powder used as a wear-resistant coating material shows good results. The coating prepared by the rapid melting and rapid condensation thermal spray technology keeps the nano structural characteristics of the powder, which significantly improves The performance of hard alloy wear-resistant coating.

11. Nano-Zinc Oxide (Nano-Zinc Oxide): The present invention is a nano-zinc oxide aqueous slurry dispersion, non-toxic and tasteless, uniformly dispersed, not deteriorated, has a strong ability to absorb ultraviolet rays (anti-UV), 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), improve the drying speed (cross-linking speed), wear resistance and smoothness. When used in the rubber field, it can reduce the amount of rubber and improve rubber products. Abrasion resistance, has the characteristics of anti-aging and extended life.

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

Please refer to FIG. 1, which is a flow chart of the preparation method of the water-based environmental protection coating of the present invention. The invention provides a method for preparing a water-based environmental protection coating, which includes the following steps: crushing and grinding a microbead to obtain a second filler (S100); at room temperature, mixing the water-based acrylic resin and deionized water in advance , And at a stirring speed of 2000 rpm, stir for 15-20 minutes to become an aqueous acrylic emulsion (S200); add an auxiliary to the aqueous acrylic emulsion, and stir at a stirring speed of 2000 rpm for 15-20 minutes 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 the second filler is mixed with the second mixture, and the water-based environmental protection coating (S500) is obtained after mixing evenly. The first filler is the base material of the water-based environmental protection coating of the present invention.

Further, in the preparation method of the water-based environmental protection coating of the present invention, the second filler may be further subjected to a sieving step, so as to be divided into micro-beads of various particle sizes.

Example 1

An optimized water-based environmental protection coating, its composition is calculated by weight percentage: titanium dioxide 15%, muscovite powder 2%, diatomaceous earth 3%, talc powder 5%, kaolin 3%, zinc oxide 1%, quartz powder (two Silica) 3%, photocatalyst powder 3%, hollow glass beads 10%, water-based acrylic resin 45% and deionized water 10%, wherein the hollow glass beads contain a particle size of 70 μm, particle size 65 μm, particle size Four kinds of hollow glass microspheres with different particle sizes of 60 μm and a particle size of 45 μm respectively account for the ratio of 2:3:3:2 of the hollow glass microspheres as a whole.

An optimized preparation method of water-based environmental protection coating, which includes the following steps: a. Firstly, the hollow glass microspheres are crushed and ground, and after grinding, the hollow glass microspheres are sieved to obtain a particle size of 70 μm and a particle size 65μm, 60μm and 45μm hollow glass microspheres with different particle sizes, ready for use; b. Preparation of an aqueous acrylic emulsion: At normal temperature, add the aqueous acrylic resin and deionized water to the blender to stir At a speed of 2000 rpm, stir for 15 minutes to mix; c. Add paint film-forming aid, paint dispersant, defoamer, and preservative to the aqueous acrylic emulsion prepared in step b above, with a stirring speed of 2000 rpm Under conditions, stir for 15 minutes to become the first mixture of barrier heat-insulating coating; d. Add titanium dioxide, muscovite powder, diatomaceous earth, talc, kaolin, zinc oxide, etc. to the first mixture obtained in step c Quartz powder (silica) and photocatalyst powder, at a stirring speed of 80 rpm, stirring for 30 minutes to become the second mixture of barrier-type thermal insulation coating; e. Finally, the four different particle sizes obtained in step a The hollow glass microspheres are respectively 70μm, 65μm, 60μm, and 45μm in size, mixed with the second mixture at a ratio of 2:3:3:2, and evenly mixed to obtain an optimized water Environmental protection coating.

Perform the heat insulation test on the optimized water-based environmental protection coating prepared above, please refer to Table 1-1, the results show that the temperature difference between the coating film and the coating film can be as high as 20 ℃ or more, indicating the optimized water-based environmental protection coating of the invention Can effectively reduce the heat conduction speed. Among them, the indoor closed-type test is carried out under the condition of using a light bulb to simulate outdoor sunlight in a closed-type house, and the four sides of the simulated house are combined by iron pieces to simulate a more severe environment. Since the thickness of the paint will affect the thermal insulation effect, it is recommended that the thickness of the spray coating be 0.5mm.

Further, the optimized water-based environmental protection coating is subjected to antifreeze test, please refer to FIG. 2, which is the antifreeze analysis diagram of Example 1 of the present invention. The results show that the sprayed coating of the optimized water-based environmental protection coating is placed on After seven days at minus 23°C, the coating surface did not have any blisters or cracks, indicating that the optimized water-based environmental protection coating of the present invention has anti-freezing function.

Then, the optimized water-based environmental protection coating is tested for waterproof, anti-rust and anti-fog, please refer to FIG. 3, FIG. 3 is the analysis chart of waterproof, anti-rust and anti-fog in Example 1 of the present invention. The coating of the optimized water-based environmental protection coating is placed in high-concentration brine (about how much concentration of NaCl), and after two months, the surface of the coating has no embroidering blisters or cracks, indicating that the present invention optimizes the water-based The environmental protection coating has the functions of waterproof, anti-rust and anti-fog.

Furthermore, the optimized water-based environmental protection coating was tested in natural environment. Please refer to FIG. 4, which is the analysis diagram of the natural environment test of Example 1 of the present invention. The result shows that the optimized water-based coating is sprayed on the surface of the iron house with 0.5mm The test coating of environmental protection coating, after more than one year of natural environment test of sunlight, wind and rain, the surface has no problems such as blistering and cracks on the surface, which shows 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 of seven functions in one.

Example 2

A barrier type heat-insulating coating whose composition is 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%, water-based acrylic resin 45% and deionized water 10%, wherein the hollow glass microspheres contain four different sizes of hollow glass 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 The microbeads respectively account for a ratio of 2:3:3:2 of 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% for the coating film forming aid, 2% for the coating dispersant, 0.3% for the antifoaming agent, and 0.1 for the preservative. ~0.2%.

A method for preparing a barrier type heat-insulating coating, which includes the following steps: a. First, the hollow glass microspheres and hollow ceramic microspheres are crushed and ground, and after grinding, the hollow glass microspheres are subjected to a sieve step to obtain a particle size 70μm, 65μm, 60μm, and 45μm hollow glass microspheres with different particle sizes, ready for use; b. Preparation of an aqueous acrylic emulsion: add the aqueous acrylic resin and deionized water to the mixer at room temperature In the condition, the stirring speed is 2000rpm, and the mixture is stirred for 15 minutes; c. Add the coating film-forming aid, coating dispersant, defoamer and preservative to the aqueous acrylic emulsion prepared in the above step b to stir At 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, At a stirring speed of 80 rpm, stir for 30 minutes to become a second mixture of barrier-type heat-insulating coatings; e. Finally, the hollow ceramic microspheres obtained in step a and four hollow glass microspheres of different particle sizes, They are particle size 70μm, particle size 65μm, particle size 60μm and particle size 45μm, mixed with the second mixture according to the ratio of 2:3:3:2. After mixing evenly, a barrier type heat insulation coating can be obtained.

Example 3

A reflective heat-insulating coating whose composition is calculated by weight percentage: diatomite 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 microspheres include hollow glass microspheres of four different particle sizes 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 The beads respectively account for a ratio of 2:3:3:2 of 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% for the coating film forming aid, 2% for the coating dispersant, 0.3% for the antifoaming agent, and 0.1 for the preservative. ~0.2%.

A method for preparing a reflective heat-insulating coating, which includes the following steps: a. First, the hollow glass microspheres are crushed and ground, and then sieved after grinding to obtain a particle size of 70 μm, a particle size of 65 μm, a particle size of 60 μm, and particles Four kinds of hollow glass microspheres with different diameters of 45μm in diameter, ready for use; b. Preparation of an aqueous acrylic emulsion: At normal temperature, add the aqueous acrylic resin and deionized water to the blender at a stirring speed of 2000rpm. Stir for 15 minutes to mix; c. Add paint film-forming aid, paint dispersant, defoamer, and preservative 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 thermal insulation coating; d. Add diatomaceous earth, muscovite powder, titanium dioxide, zinc oxide, quartz powder and kaolin to the first mixture obtained in step c, under the condition of stirring speed of 80rpm Stir for 30 minutes to become the second mixture of reflective heat-insulating coating; e. Finally, the hollow glass microspheres of four different particle sizes obtained in step a are 70μm in diameter, 65μm in diameter, and particle size respectively 60μm and particle size 45μm, mixed with the second mixture according to the ratio of 2:3:3:2, after mixing evenly, a reflective heat-insulating coating can be obtained.

Example 4

A heat-insulating primer type heat-insulating coating A, whose composition is calculated by weight percentage: diatomite 5%, quartz powder 10%, kaolin 3%, foam glass beads 10%, hollow ceramic beads 2%, hollow glass Microbeads 10%, cement 5%, waterborne acrylic resin 45% and deionized water 10%, wherein the hollow glass microbeads include four different sizes of 70μm, 65μm, 60μm and 45μm The hollow glass micro-beads with a particle size occupy a ratio of 2:3:3:2 of the hollow glass micro-beads respectively.

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% for the coating film forming aid, 2% for the coating dispersant, 0.3% for the antifoaming agent, and 0.1 for the preservative. ~0.2%.

A method for preparing a heat-insulating primer type heat-insulating coating A, which includes the following steps: a. First, foam glass beads, hollow ceramic beads and hollow glass beads are crushed and ground, and then the hollow glass is ground after grinding The microbeads are subjected to a sieving step to obtain hollow glass microspheres of four different particle sizes 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, for use; b. Prepare an aqueous acrylic emulsion: at room temperature, Add the water-based acrylic resin and deionized water to the mixer, and stir at a stirring speed of 2000 rpm for 15 minutes to mix; c. Add the coating film-forming aid and coating dispersant to the water-based acrylic emulsion prepared in step b above , Antifoaming agent, preservative, under the condition of a stirring speed of 2000rpm, stirring for 15 minutes to become the first mixture of heat-insulating primer type heat-insulating coating A; d. Add silicon to the first mixture obtained in step c Diatomaceous earth, quartz powder and kaolin, with a stirring speed of 80 rpm, stirring for 30 minutes to become the second mixture of thermal insulation primer type thermal insulation coating A; c. the foamed glass beads obtained in step a, Hollow ceramic microbeads and four types of hollow glass microbeads with different particle sizes are 70μm, 65μm, 60μm and 45μm, mixed with the second mixture in the ratio of 2:3:3:2 At the end, add 20% cement, and mix well to get a heat-insulating primer type heat-insulating paint A.

Example 5

A heat-insulating primer type heat-insulating coating B, the composition of which is calculated by weight percentage: zinc oxide 1%, kaolin 10%, hollow ceramic microbeads 20%, zeolite powder 10%, quartz powder 4%, water-based acrylic resin 45% and Deionized water is 10%, and the size of the hollow ceramic microspheres is 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% for the coating film forming aid, 2% for the coating dispersant, 0.3% for the antifoaming agent, and 0.1 for the preservative. ~0.2%.

A method for preparing a heat-insulating primer type heat-insulating coating B, which includes the following steps: a. First, the hollow ceramic microbeads are crushed and ground, and after grinding, the hollow ceramic microbeads are screened to obtain a particle size of 150 μm Hollow ceramic beads of different sizes, ready for use; b. Preparation of an aqueous acrylic emulsion: At room temperature, add the aqueous acrylic resin and deionized water to a blender, and mix at a stirring speed of 2000 rpm for 15 minutes; c. Add the coating film-forming aid, coating dispersant, defoamer, and preservative to the aqueous acrylic emulsion prepared in step b above, and stir for 15 minutes at a stirring speed of 2000 rpm to become a heat-insulating primer. The first mixture of thermal coating 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 an insulating primer The second mixture of 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. After mixing uniformly, an insulating primer thermal insulation coating B is obtained.

Example 6

A heat-insulating primer type heat-insulating coating C, whose composition is calculated by weight percentage: zinc oxide 1%, kaolin 10%, hollow ceramic microbeads 20%, zeolite powder 4%, quartz powder 10%, water-based acrylic resin 45% and Deionized water is 10%, and the size of the hollow ceramic microspheres is 150μm and 50nm respectively, each of which accounts for 1:1 of the total ratio of the hollow ceramic 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% for the coating film forming aid, 2% for the coating dispersant, 0.3% for the antifoaming agent, and 0.1 for the preservative. ~0.2%.

A method for preparing a heat-insulating primer type heat-insulating coating C, which includes the following steps: a. First, the hollow ceramic microbeads are crushed and ground, and after grinding, the hollow ceramic microbeads are sieved to obtain particle sizes respectively 150μm and 50nm hollow ceramic microbeads, ready for use; b. Preparation of an aqueous acrylic emulsion: At normal temperature, add the aqueous acrylic resin and deionized water to the blender, and stir at a stirring speed of 2000rpm for 15 minutes to mix ; C. Add the coating film-forming aid, coating dispersant, defoamer, and preservative to the aqueous acrylic emulsion prepared in step b above, and stir for 15 minutes at a stirring speed of 2000 rpm to become a heat-insulating bottom The first mixture of lacquer type heat-insulating coating C; d. Add zinc oxide, zeolite powder, quartz powder and kaolin to the first mixture obtained in step c, and stir at a stirring speed of 80 rpm for 30 minutes to become a The second mixture of thermal primer heat-insulating coating C; e. Finally, the hollow ceramic microspheres with a particle size of 150 μm and 50 nm obtained in step a are mixed with the second mixture at a ratio of 1:1, and the mixture is uniformly obtained 1. Thermal insulation primer type thermal insulation coating C.

The present invention is to present the preferred embodiments or examples of the technical means used to solve the problem, and is not used to limit the scope of the patent application of the present invention, that is, where the meaning of the patent application scope of the present invention is consistent with the scope of the patent application of the present invention, or made according to the patent scope of the present invention Equal changes and modifications are covered by the invention patent.

S100~S500‧‧‧Step

Claims (10)

A water-based environmental protection coating, comprising: a binder, wherein the weight percentage of the binder is 40-50%; an acrylic resin, wherein the acrylic resin weight percentage is 40-50%; and a deionized water, wherein The weight percentage of the deionized water is 5-15%. The water-based environmental protection coating as described in item 1 of the patent application scope, wherein 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, More than one component of calcium carbonate, zinc phosphate, lithopone powder, a bentonite powder, a photocatalyst powder, a barium sulfate, a reflective powder, a zeolite powder and a microbead. The water-based environmental protection coating as described in Item 2 of the patent application scope, wherein the titanium dioxide is selected from the group consisting of GR composite titanium dioxide, rutile titanium dioxide and anatase titanium dioxide. The water-based environmental protection coating as described in item 2 of the patent application scope, wherein the mica powder is selected from the group consisting of muscovite powder, silk muscovite powder, magnesium-silica muscovite powder, and phlogopite powder. The water-based environmental protection coating as described in item 2 of the patent application scope, wherein the microbeads are selected from the group consisting of foamed glass microbeads, hollow glass microbeads, fly ash hollow glass microbeads and hollow ceramic microbeads. The water-based environmental protection coating as described in item 1 of the patent application scope, wherein the water-based environmental protection coating further includes a nano-powder, wherein the nano-powder system is selected from nano-ceramic powder silicon carbide (Nano-Silicon Carbide) , Sic), Nano-Zinc Oxide, Graphene Oxide (GO), Nano Graphite Powder, Nano-Cobalt Oxide, Nano Iron Oxide (Nano-Zinc Oxide) Iron (II) Iron (III) Oxide), Nano-Zinc Oxide, Nano-Zirconium Dioxide; Nano-Zirconium (IV) Oxide, Nano-Molybdenum Carbide ), Nano-Tungsten Carbide, and Nano-Zinc Oxide. The water-based environmental protection coating as described in item 1 of the patent application scope, wherein the water-based environmental protection coating further includes an auxiliary agent, wherein the auxiliary agent is selected from the group consisting of paint dispersant, paint film-forming auxiliary agent, water-based leveling agent and defoaming agent 、Rheological 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 environmental protection coating as described in item 1 of the patent application scope includes the following steps: crushing and grinding a microbead to obtain a second filler; at normal temperature, removing the water-based acrylic resin Ionized water is mixed first, and at a stirring speed of 2000 rpm, stirring for 15-20 minutes to become an aqueous acrylic emulsion; add an auxiliary to the aqueous acrylic emulsion and stirring 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 at a stirring speed of 80 rpm for 30-40 minutes to become a second mixture, where the first The filler is the base material as described in item 2 of the patent application scope; and the second filler is mixed with the second mixture, and the water-based environmental protection coating is obtained after mixing evenly. The preparation method of water-based environmental protection coating as described in item 8 of the patent application scope, wherein the second filler can be further subjected to a sieving step. The method for preparing a water-based environmental protection coating as described in item 8 of the patent application range, wherein the sieving step can divide the second filler into microbeads of various particle sizes.

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