阅读说明：本技术 一种基于聚合物微球的水包砂多彩涂料及其制备方法 (Sand-in-water multicolor paint based on polymer microspheres and preparation method thereof ) 是由 江拥 杨汝良 蒋合兵 熊林 王刚 杨飞 汤朝红 周茂英 于 2021-10-14 设计创作，主要内容包括：本发明涉及多彩涂料技术领域,公开了一种基于聚合物微球的水包砂多彩涂料及其制备方法,选用去离子水作为分散介质,主要由去离子水、Expancel微球、纤维素、PH调节剂、合成树脂乳液、填料、多彩保护胶、成膜助剂和砂配置制备水包砂多彩涂料。本发明利用Expancel微球在水包砂体系中能很好的对石英砂起到悬浮和承托的作用,对水包砂生产、运输、储存稳定性都起到很好的稳定作用,不易产生分层和沉底的问题；其透气、防霉抗碱、耐化学品性能优异,且具有优异的附着力、耐候性、抗开裂、抗粉化、保色性能。(The invention relates to the technical field of multicolor coatings, and discloses a polymer microsphere-based sand-in-water multicolor coating and a preparation method thereof. According to the invention, Expancel microspheres can well suspend and support quartz sand in a sand-in-water system, and can well stabilize the production, transportation and storage stability of sand-in-water, so that the problems of layering and bottom sinking are not easy to generate; the paint has excellent air permeability, mildew resistance, alkali resistance, chemical resistance, adhesive force, weather resistance, cracking resistance, chalking resistance and color retention.)

1. The sand-in-water multicolor paint based on the polymer microspheres is characterized by comprising the following raw materials in percentage by mass:

the component A comprises: 16-22% of deionized water, 0.1-0.3% of dispersant, 0.1-0.3% of bactericide, 0.1-0.3% of defoaming agent, 0.3-0.6% of rutile titanium dioxide, 1-5% of calcined kaolin, 6-8% of hydroxyethyl cellulose, 1-1.3% of Istman film-forming assistant, 0.1-0.2% of pH value regulator, 1-5% of polymer microsphere, 19-24% of synthetic resin emulsion and 10-14% of protective colloid solution; 80-20% of quartz sand, and 100-20% of quartz sand;

and B component: 90-92% of deionized water, 0.2-0.25% of bactericide, 2-5% of colorful protective adhesive and 4-5% of inorganic gel;

and C, component C: 40-45% of deionized water, 0.1-0.3% of preservative, 0.1-0.3% of mineral oil defoamer, 1-1.5% of pH value regulator, 2.5-3% of ethylene glycol, 45-50% of synthetic resin emulsion, 7-8% of Istman film-forming aid and 0.3-0.4% of alkali swelling thickener;

wherein the polymer microspheres are Expancel microspheres, and the ratio of the dosage of the component A to the dosage of the component B to the dosage of the component C is 500: 230: 270.

2. the sand-in-water multicolor paint based on the polymer microspheres of claim 1, which is characterized in that: the mass fraction of the protective glue solution in the component A is 3.6%, and the dispersant is one or more of polycarboxylic acid ammonium salt dispersant, polyacrylic acid ammonium salt dispersant, sodium polyacrylate, trisodium phosphate, silicate, alkylphenol polyoxyethylene ether and alkyl aryl sulfonate.

3. The sand-in-water multicolor paint based on the polymer microspheres of claim 1, which is characterized in that: the bactericide is one or more of organic amine bactericide and organic bromine bactericide.

4. The sand-in-water multicolor paint based on the polymer microspheres of claim 1, which is characterized in that: the inorganic gel in the component B is inorganic magnesium lithium silicate sol with the mass fraction of 2 percent.

5. The sand-in-water multicolor paint based on the polymer microspheres of claim 1, which is characterized in that: the alkali swelling thickener in the component C is acrylic acid alkali swelling thickener TT-615 or hydrophobic modified alkali swelling thickener DR-72.

6. A preparation method of a sand-in-water multicolor paint based on polymer microspheres is characterized by comprising the following steps:

s1, preparing A, B, C components respectively for later use:

the component A comprises: putting deionized water into a clean reaction kettle, adding a dispersing agent, a bactericide, a defoaming agent at a rotating speed of 500 rpm for one time, adjusting the rotating speed to 800 rpm, sequentially adding rutile titanium dioxide, calcined kaolin, hydroxyethyl cellulose and a film-forming auxiliary agent, stirring for 15 minutes, then adding a pH value regulator, adjusting the rotating speed of a dispersion machine to 1500 rpm, stirring at a high speed for 40 minutes, reducing the rotating speed to 800 rpm when the detected fineness is less than or equal to 40 mu m, adding polymer microspheres, stirring and dispersing for 10 minutes, sequentially adding a synthetic resin emulsion, a protective adhesive and quartz sand, and stirring uniformly, wherein the product control viscosity is 115-;

and B component: putting deionized water into a clean reaction kettle, slowly adding a bactericide and a colorful protective adhesive at 1000 rpm, stirring until no obvious particles exist, adding 2% of inorganic magnesium lithium silicate sol dissolved in advance, and uniformly stirring for later use;

and C, component C: putting deionized water into a clean reaction kettle, sequentially adding a preservative, a defoaming agent, a pH value regulator, ethylene glycol, a synthetic resin emulsion and a film-forming auxiliary agent at the rotating speed of 500 revolutions per minute, uniformly stirring, mixing the deionized water and a thickening agent in a ratio of 1:1, slowly adding the mixture into a dispersion tank, halving the mixture uniformly, and controlling the viscosity to be 90-95KU for later use;

s2, adding 230 parts of the component B into a reaction kettle, sequentially adding corresponding raw materials of the component A according to the using amount of 500 parts of the component A, uniformly stirring, and granulating by a granulator;

s3, adding 270 parts of the component C into the particles obtained in the step S1, stirring uniformly by using an anchor type stirrer, and controlling the initial viscosity to be 85-88 KU;

and S4, packaging to obtain the sand-in-water multicolor paint based on the polymer microspheres after the initial viscosity reaches the requirement.

7. The method for preparing the sand-in-water multicolor paint based on the polymer microspheres as claimed in claim 1, characterized in that: and subpackaging and toning the component A according to the colors and the quantity of granite or marble in the preparation process.

Technical Field

The invention relates to the technical field of multicolor coatings, in particular to a sand-in-water multicolor coating based on polymer microspheres and a preparation method thereof.

Background

The multi-color paint is a product which has strict requirements on production, technology, construction and the like. Only new products are continuously developed, the product quality is improved, and the quality is strictly the best method for the vitality of the sand-in-water multicolor paint. The existing sand-in-water multicolor paint has the following problems:

1) delamination and bottoming problems: the water-in-sand multicolor paint has the advantages that the master batch contains quartz sand with a certain specific gravity, the whole specific gravity is high, the water-in-sand multicolor paint is influenced by external stress in the processes of storage and transportation, so that the sand-in-water master batch slowly sinks, precipitates are gradually overlapped and compacted in a certain time, and a compact hard block is formed, so that the material cannot be normally used, and the reason is mainly caused by improper control of the specific gravity between the granular glue and the protective glue;

2) the construction consumption is large: to achieve a better stone-like effect, the specific weight of the sand-in-water is 1.5-2kg per square dosage in construction, and the finished product effect can not be achieved by one-time spraying under the thickness, so that the phenomenon of sagging is easily caused. And secondary construction cost is brought to coating construction.

3) The problem of bleeding: the sand-in-water multicolor paint is in turbid liquid of different colors and color particles, and the color particle boundary is fuzzy or even no color particles appear. The reason is that the strength of the gel protective film on the surface of the colored particles is not enough, and the pigment, filler, auxiliary agent and the like in the colored particles continuously permeate outwards through the protective film, so that the dispersion medium gradually takes the color of the colored particles.

Disclosure of Invention

Based on the problems, the invention provides a sand-in-water multicolor paint based on polymer microspheres and a preparation method thereof, wherein Expancel microspheres can well suspend and support quartz sand in a sand-in-water system, can well stabilize the production, transportation and storage stability of sand-in-water, and are not easy to generate the problems of layering and bottom sinking; the paint has excellent air permeability, mildew resistance, alkali resistance, chemical resistance, adhesive force, weather resistance, cracking resistance, chalking resistance and color retention.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the sand-in-water multicolor paint based on the polymer microspheres comprises the following raw materials in percentage by mass:

the component A comprises: 16-22% of deionized water, 0.1-0.3% of dispersant, 0.1-0.3% of bactericide, 0.1-0.3% of defoaming agent, 0.3-0.6% of rutile titanium dioxide, 1-5% of calcined kaolin, 6-8% of hydroxyethyl cellulose, 1-1.3% of Istman film-forming assistant, 0.1-0.2% of pH value regulator, 1-5% of polymer microsphere, 19-24% of synthetic resin emulsion and 10-14% of protective colloid solution; 80-20% of quartz sand, and 100-20% of quartz sand;

and B component: 90-92% of deionized water, 0.2-0.25% of bactericide, 2-5% of colorful protective adhesive and 4-5% of inorganic gel;

and C, component C: 40-45% of deionized water, 0.1-0.3% of preservative, 0.1-0.3% of mineral oil defoamer, 1-1.5% of pH value regulator, 2.5-3% of ethylene glycol, 45-50% of synthetic resin emulsion, 7-8% of Istman film-forming aid and 0.3-0.4% of alkali swelling thickener;

wherein the polymer microspheres are Expancel microspheres, and the ratio of the dosage of the component A to the dosage of the component B to the dosage of the component C is 500: 230: 270.

further, the mass fraction of the protective colloid solution in the component A is 3.6%, and the dispersant is one or more of polycarboxylic acid ammonium salt dispersant, polyacrylic acid ammonium salt dispersant, sodium polyacrylate, trisodium phosphate, silicate, alkylphenol polyoxyethylene ether and alkyl aryl sulfonate.

Further, the bactericide is one or more of an organic amine bactericide and an organic bromine bactericide.

Further, the inorganic gel in the component B is inorganic magnesium lithium silicate sol with the mass fraction of 2%.

Further, the alkali swelling thickener in the component C is an acrylic acid alkali swelling thickener TT-615 or a hydrophobic modified alkali swelling thickener DR-72.

In order to realize the technical effects, the invention also provides a preparation method of the sand-in-water multicolor paint based on the polymer microspheres, which comprises the following steps:

s1, preparing A, B, C components respectively for later use:

the component A comprises: putting deionized water into a clean reaction kettle, adding a dispersing agent, a bactericide, a defoaming agent at a rotating speed of 500 rpm for one time, adjusting the rotating speed to 800 rpm, sequentially adding rutile titanium dioxide, calcined kaolin, hydroxyethyl cellulose and a film-forming auxiliary agent, stirring for 15 minutes, then adding a pH value regulator, adjusting the rotating speed of a dispersion machine to 1500 rpm, stirring at a high speed for 40 minutes, reducing the rotating speed to 800 rpm when the detected fineness is less than or equal to 40 mu m, adding polymer microspheres, stirring and dispersing for 10 minutes, sequentially adding a synthetic resin emulsion, a protective adhesive and quartz sand, and stirring uniformly, wherein the product control viscosity is 115-;

and B component: putting deionized water into a clean reaction kettle, slowly adding a bactericide and a colorful protective adhesive at 1000 rpm, stirring until no obvious particles exist, adding 2% of inorganic magnesium lithium silicate sol dissolved in advance, and uniformly stirring for later use;

and C, component C: putting deionized water into a clean reaction kettle, sequentially adding a preservative, a defoaming agent, a pH value regulator, ethylene glycol, a synthetic resin emulsion and a film-forming auxiliary agent at the rotating speed of 500 revolutions per minute, uniformly stirring, mixing the deionized water and a thickening agent in a ratio of 1:1, slowly adding the mixture into a dispersion tank, halving the mixture uniformly, and controlling the viscosity to be 90-95KU for later use;

s2, adding 230 parts of the component B into a reaction kettle, sequentially adding corresponding raw materials of the component A according to the using amount of 500 parts of the component A, uniformly stirring, and granulating by a granulator;

s3, adding 270 parts of the component C into the particles obtained in the step S1, stirring uniformly by using an anchor type stirrer, and controlling the initial viscosity to be 85-88 KU;

and S4, packaging to obtain the sand-in-water multicolor paint based on the polymer microspheres after the initial viscosity reaches the requirement.

Further, the A component is subpackaged and toned according to the colors and the quantity of granite or marble in the preparation process.

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

1. according to the invention, Expancel microspheres can well suspend and support quartz sand in a sand-in-water system, and can well stabilize the production, transportation and storage stability of sand-in-water, so that the problems of layering and bottom sinking are not easy to generate; the paint has excellent air permeability, mildew resistance, alkali resistance and chemical resistance, and has excellent adhesive force, weather resistance, cracking resistance, chalking resistance and color retention;

2. the sand-in-water multicolor paint has multiple color matching and selection and rich color range; the construction is wide in tolerance, good in plasticity effect and various in construction methods; the environment is protected, the energy is saved, the dead weight is light, and the safety is realized; the decorative effect, the shape, the variety of the matching materials and the like are various, and the decorative material can be widely applied to the interior and exterior wall artistic decoration of houses, hotels, schools, office buildings, entertainment places and the like.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.

Example 1:

the sand-in-water multicolor paint based on the polymer microspheres comprises the following raw materials in percentage by mass:

the component A comprises: 16-22% of deionized water, 0.1-0.3% of dispersant, 0.1-0.3% of bactericide, 0.1-0.3% of defoaming agent, 0.3-0.6% of rutile titanium dioxide, 1-5% of calcined kaolin, 6-8% of hydroxyethyl cellulose, 1-1.3% of Istman film-forming assistant, 0.1-0.2% of pH value regulator, 1-5% of polymer microsphere, 19-24% of synthetic resin emulsion and 10-14% of protective colloid solution; 80-20% of quartz sand, and 100-20% of quartz sand;

and B component: 90-92% of deionized water, 0.2-0.25% of bactericide, 2-5% of colorful protective adhesive and 4-5% of inorganic gel;

and C, component C: 40-45% of deionized water, 0.1-0.3% of preservative, 0.1-0.3% of mineral oil defoamer, 1-1.5% of pH value regulator, 2.5-3% of ethylene glycol, 45-50% of synthetic resin emulsion, 7-8% of Istman film-forming aid and 0.3-0.4% of alkali swelling thickener;

wherein the polymer microspheres are Expancel microspheres, and the ratio of the dosage of the component A to the dosage of the component B to the dosage of the component C is 500: 230: 270.

the preparation method of the sand-in-water multicolor paint in the embodiment comprises the following steps:

s1, preparing A, B, C components respectively for later use:

the component A comprises: putting deionized water into a clean reaction kettle, adding a dispersing agent, a bactericide, a defoaming agent at a rotating speed of 500 rpm for one time, adjusting the rotating speed to 800 rpm, sequentially adding rutile titanium dioxide, calcined kaolin, hydroxyethyl cellulose and a film-forming auxiliary agent, stirring for 15 minutes, then adding a pH value regulator, adjusting the rotating speed of a dispersion machine to 1500 rpm, stirring at a high speed for 40 minutes, reducing the rotating speed to 800 rpm when the detected fineness is less than or equal to 40 mu m, adding polymer microspheres, stirring and dispersing for 10 minutes, sequentially adding a synthetic resin emulsion, a protective adhesive and quartz sand, and stirring uniformly, wherein the product control viscosity is 115-;

and B component: putting deionized water into a clean reaction kettle, slowly adding a bactericide and a colorful protective adhesive at 1000 rpm, stirring until no obvious particles exist, adding 2% of inorganic magnesium lithium silicate sol dissolved in advance, and uniformly stirring for later use;

and C, component C: putting deionized water into a clean reaction kettle, sequentially adding a preservative, a defoaming agent, a pH value regulator, ethylene glycol, a synthetic resin emulsion and a film-forming auxiliary agent at the rotating speed of 500 revolutions per minute, uniformly stirring, mixing the deionized water and a thickening agent in a ratio of 1:1, slowly adding the mixture into a dispersion tank, halving the mixture uniformly, and controlling the viscosity to be 90-95KU for later use;

s2, adding 230 parts of the component B into a reaction kettle, sequentially adding corresponding raw materials of the component A according to the using amount of 500 parts of the component A, uniformly stirring, and granulating by a granulator;

s3, adding 270 parts of the component C into the particles obtained in the step S1, stirring uniformly by using an anchor type stirrer, and controlling the initial viscosity to be 85-88 KU;

and S4, packaging to obtain the sand-in-water multicolor paint based on the polymer microspheres after the initial viscosity reaches the requirement.

In the embodiment, the polymer microspheres are small thermoplastic microspheres encapsulated with gas, and the gas expands when heated, and the shell softens, so that the volume is increased rapidly, and highly controllable foaming can be generated, thereby generating a fine and uniform cell structure; the binder requirement in sand-in-water multicolor coatings is low due to the sharp increase in volume, so that the amount of binder in the final product can be reduced without loss of desired properties; meanwhile, the density of the polymer microspheres is as low as 25kg/m³Much lower than glass microspheres, a small amount of polymer microspheres can significantly reduce the density of the final product; thus, the polymer microspheres can serve the dual functions of a lightweight filler and a foaming agent in a sand-in-water multicolor coating system, and have the advantages of reducing manufacturing cost, reducing weight, creating attractive textures, protecting against damage or protecting against elemental attack, and the like.

In the embodiment, the mass fraction of the protective colloid solution in the component A is 3.6%, and the dispersant is one or more of polycarboxylic acid ammonium salt dispersant, polyacrylic acid ammonium salt dispersant, sodium polyacrylate, trisodium phosphate, silicate, alkylphenol polyoxyethylene ether and alkyl aryl sulfonate; the bactericide is one or more of organic amine bactericide and organic bromine bactericide; the inorganic gel in the component B is inorganic magnesium lithium silicate sol with the mass fraction of 2 percent; the alkali swelling thickener in the component C is acrylic acid alkali swelling thickener TT-615 or hydrophobic modified alkali swelling thickener DR-72.

The sand-in-water multicolor paint in the embodiment has the advantages of strong construction latitude, good plasticity effect and various construction methods; the air permeability, mildew resistance, alkali resistance and chemical resistance are excellent; for example, in the preparation process of the component A, the color and the quantity of the granite or the marble are subpackaged and toned, and the prepared sand-in-water multicolor paint can obtain the corresponding marble or granite texture plate.

Example 2:

the sand-in-water multicolor paint based on the polymer microspheres comprises the following raw materials in percentage by mass:

the component A comprises: 19.75% of deionized water, 0.2% of dispersing agent, 0.2% of bactericide, 0.25% of defoaming agent, 0.4% of rutile titanium dioxide, 3% of calcined kaolin, 6% of hydroxyethyl cellulose, 1.3% of Istmann film-forming aid, 0.2% of pH value regulator, 3% of polymer microsphere, 20% of synthetic resin emulsion and 12% of 3.6% of protective colloid solution; 80-mesh 18% of quartz sand and 100-mesh 18% of quartz sand;

and B component: 90% of deionized water, 0.25% of bactericide, 3.6% of multicolor protective glue and 4% of inorganic gel;

and C, component C: 40% of deionized water, 0.2% of preservative, 0.2% of mineral oil defoamer, 1% of pH value regulator, 2.5% of ethylene glycol, 45% of synthetic resin emulsion, 8% of Istmann film-forming aid and 0.3% of alkali swelling thickener;

wherein the polymer microspheres are Expancel microspheres, and the ratio of the dosage of the component A to the dosage of the component B to the dosage of the component C is 500: 230: 270.

the preparation method of the sand-in-water multicolor paint in the embodiment comprises the following steps:

s1, preparing A, B, C components respectively for later use:

the component A comprises: putting deionized water into a clean reaction kettle, adding a dispersing agent, a bactericide, a defoaming agent at a rotating speed of 500 rpm for one time, adjusting the rotating speed to 800 rpm, sequentially adding rutile titanium dioxide, calcined kaolin, hydroxyethyl cellulose and a film-forming auxiliary agent, stirring for 15 minutes, then adding a pH value regulator, adjusting the rotating speed of a dispersion machine to 1500 rpm, stirring at a high speed for 40 minutes, reducing the rotating speed to 800 rpm when the detected fineness is less than or equal to 40 mu m, adding polymer microspheres, stirring and dispersing for 10 minutes, sequentially adding a synthetic resin emulsion, a protective adhesive and quartz sand, and stirring uniformly, wherein the product control viscosity is 115-;

and B component: putting deionized water into a clean reaction kettle, slowly adding a bactericide and a colorful protective adhesive at 1000 rpm, stirring until no obvious particles exist, adding 2% of inorganic magnesium lithium silicate sol dissolved in advance, and uniformly stirring for later use;

and C, component C: putting deionized water into a clean reaction kettle, sequentially adding a preservative, a defoaming agent, a pH value regulator, ethylene glycol, a synthetic resin emulsion and a film-forming auxiliary agent at the rotating speed of 500 revolutions per minute, uniformly stirring, mixing the deionized water and a thickening agent in a ratio of 1:1, slowly adding the mixture into a dispersion tank, halving the mixture uniformly, and controlling the viscosity to be 90-95KU for later use;

s2, adding 230 parts of the component B into a reaction kettle, sequentially adding corresponding raw materials of the component A according to the using amount of 500 parts of the component A, uniformly stirring, and granulating by a granulator;

s3, adding 270 parts of the component C into the particles obtained in the step S1, stirring uniformly by using an anchor type stirrer, and controlling the initial viscosity to be 85-88 KU;

and S4, packaging to obtain the sand-in-water multicolor paint based on the polymer microspheres after the initial viscosity reaches the requirement.

In this embodiment, the sand-in-water multicolor paint based on the polymer microspheres is compared with the vitrified microsphere sand-in-water paint and the conventional system sand-in-water paint in the same addition amount, and the related comparative properties of the selected Expancel microspheres, vitrified microspheres and three-tree masonry paint are shown in table 1 below:

TABLE 1 comparison of Expancel microspheres with similar products

The data comparison shows that the Expancel microspheres can well suspend and support quartz sand in a sand-in-water system, and can well stabilize the production, transportation and storage stability of the sand-in-water system. And the experiment comparison is carried out under the condition of the same addition amount, 60 percent of Expancel microspheres and expanded and vitrified micro-beads are respectively added into 40 percent of deionized water and stirred for 20 minutes on a high-speed dispersion machine at 2000 rotating speed, and then the test is carried out, and the breaking rate of the expanded and vitrified micro-beads reaches 40 percent; the breakage of the Expancel microspheres is less than 5%. From this comparison of experimental data it was shown that the mechanical stability of the Expancel microspheres is rather excellent.

The data pairs of the various water-coated sand multicolor coatings on the square dosage under the premise of achieving the same effect of marble granite are shown in table 2:

TABLE 2 comparison of Expancel microsphere sand-in-water coating with similar products

The data in the table show that the Expancel microsphere sand-in-water ratio is light, the square dosage has obvious material cost saving, the total construction cost has obvious advantages, and the effects of saving energy and reducing materials are achieved.

The embodiment develops a novel manufacturing method of the sand-in-water multicolor paint aiming at the defects of high preparation cost, poor suspension property, large specific gravity consumption and the like of the sand-in-water multicolor paint in the prior art, develops researches from the aspects of raw material selection, quality proportioning research, water-in-water sand performance test confirmation in the preparation process, use effect monitoring, production process combination, market popularization research and the like, and effectively realizes green manufacturing of products and production and application of green building materials by using a novel environment-friendly material on the premise of ensuring the product quality.

The prepared sand-in-water multicolor paint is subjected to detection of corresponding items according to national standards GB/T9755-2014, GB/T9779-2015, GB/T25261-2010, GB/T34676-2017 and GB/T9756-2018, and the obtained test results are shown in the following table 3:

TABLE 3 Sand-in-water multicolor paint performance test results based on polymer microspheres

The above-mentioned data are compared with the corresponding national standards, and it can be seen that the various coatings prepared by the present embodiment have the relevant national standard requirements.

The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the process of verifying the invention and are not intended to limit the scope of the invention, which is defined by the claims, and all the equivalent structural changes made by applying the content of the specification of the invention should be covered by the scope of the invention.