RU2847443C1 - Composition for protective and decorative coating of building products - Google Patents

Abstract

FIELD: protective and decorative coating.

SUBSTANCE: the invention can be used as a protective and decorative coating that absorbs radiation. The composition for a protective and decorative coating for building products includes titanium dioxide, shungite, filler, acrylic emulsion, ether-containing compounds in the form of glycol ethers and glycol acetate esters, vinyl polymers and water. The filler is made of a reinforcing agent in the form of talc, or clay, or mica, or glass flakes, or carbon fibres, or kaolin, or chalk with a size of no more than 0.15 mm. At the same time, shungite is made with a grinding degree of no more than 0.25 microns.

EFFECT: increased effectiveness of protection against ultra-short radio frequency electromagnetic waves while simplifying the technology for producing a composition for protective and decorative coating of building products, extending the setting time and improving the physical and mechanical properties of the coating.

3 cl, 1 tbl, 4 ex

Description

The proposed invention relates to the field of construction and the chemical industry, namely: to paint and varnish compositions, in particular, to compositions of paint and varnish materials intended for painting metal and non-metal structures in construction, aviation technology and other industries and for protecting technical equipment and people in industrial, administrative and residential premises from the effects of electromagnetic fields in the radio frequency range arising from the operation of electromagnetic waves of cellular communications, electrical networks and electrical appliances, during the operation of mobile and radio telephones, and can be used in the production of construction products as a protective and decorative coating that absorbs radiation, and more specifically - for painting various surfaces (walls, ceilings, facades of civil, industrial and public buildings and structures made of metal, concrete, wood, wood boards, asbestos cement, brick, etc.), as well as for protecting people from the geopathogenic effects of the environment.

Mobile phones operate at frequencies between 800 and 1900 MHz, which are considered non-ionizing radiation. Systems using frequencies of 2100 MHz and higher may soon appear. This radiation distorts the Earth's natural electromagnetic field within office and residential buildings, adversely affecting humans and electronic devices. Consequently, it is necessary to protect people and the environment from electromagnetic radiation in this range.

A paint and varnish composition for shielding electromagnetic radiation is known, containing a binder in the form of thermoplastic polyurethane, two dispersed electrically conductive filler particles of different shapes in the form of crushed carbon fiber with an average particle length of less than 300 μm and a length-to-thickness ratio of 15-30 μm and graphite powder with a particle size of 3-15 μm, a plasticizer and a liquid epoxy resin hardener and an epoxy resin-based composition, combined before applying the paint and varnish composition to the surface of the product, in the following ratio of components, wt. %:

graphite 50-70 carbon fiber 1-5 plasticizer 0.2-1 thermoplastic polyurethane 0.2-1 epoxy resin the rest up to 100 [1]

The disadvantage of this invention is the use of epoxy resin, which significantly limits the surface area for one-time application and the need to increase the speed of use of the two-component composition.

The closest to the claimed technical solution (prototype) is a composition for a protective and decorative coating of building products, including a phosphate binder, a surfactant, latex, an antifoam, water, a pigment in the form of at least one component from the group: titanium dioxide, iron oxide, chromium oxide, spinel, a mixture of oxides from the group: chromium oxide, cobalt oxide, nickel oxide, as well as chromium phosphate, cobalt, barium chromate, zinc, phthalocyanine pigment and a mixture of the said components, deposited on a filler from at least one component selected from the group: silicon oxide and/or kaolin, bentonite, shungite, acid slag, flotation sludge of phosphate or apatite ores, acid fly ash, barium sulfate, diatomaceous silica, expanded clay dust, fireclay dust, andesite flour, phosphogypsum and a mixture of the specified components and additionally one component from the group: aerosil, white carbon black, clay, hydrolyzed acrylate, oligoestermaleate, in the following ratio of components, wt. %:

phosphate binder 7-17 pigment 3-12 filler 4:30 surfactant 0.4-2.0 latex 25-55 at least one component from the group: aerosil, white soot, clay, hydrolyzed acrylate 0.15-3.0 antifoam agent 0.2-2.0 water rest

Antifreeze and/or antiseptic may also be added in an amount of 2-7% [2].

The disadvantages of this technical solution are that the large number of components complicates the paint production technology and the degree of protection from ultra-short radio frequency electromagnetic waves and other radiation, increasing its cost.

The new technical result achieved by the proposed invention is an increase in the effectiveness of protection against ultra-short radio frequency electromagnetic waves while simplifying the production technology of the composition for protective and decorative coating of building products, extending the setting time, imparting self-compacting ability to it, increasing the strength limits and water resistance of products painted with this composition.

The new technical result is achieved by the fact that in a composition for a protective and decorative coating of building products, including titanium dioxide, shungite, a filler, an acrylic-containing compound, an ether-containing compound and water, unlike the prototype, vinyl polymers are additionally introduced, the ether-containing compound is made in the form of glycol ethers and glycol ether acetates, the acrylic-containing compound is made in the form of an acrylic emulsion, the filler is made reinforcing in the form of talc or clay or mica or glass flakes or carbon fibers or kaolin or chalk with the size of the said filler components of no more than 0.15 mm, shungite is made with a degree of grinding of no more than 0.28 microns, with the following content of components, wt. %:

titanium dioxide 5-10 vinyl polymers 15-20 acrylic emulsion 25-30 glycol ethers and glycol ether acetates 2-3 reinforcing filler 0.5-0.7 shungite 30-45 aqueous dispersion the rest up to 100%

Vinyl polymers can be selected from polyethylene, polypropylene, polybutadiene, polystyrene, polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyacrylonitrile.

Natural zeolite of volcanic origin with a grinding degree of no more than 0.28 microns and a content of 2-4 wt.% can be additionally introduced into the reinforcing filler.

The use of titanium dioxide in the proposed composition for paint coating of building products makes it possible to impart to the applied paint coating such properties as increased resistance to ultraviolet radiation and to increase the coating's hiding power due to its high refractive index.

The use of glycol ethers and glycol ether acetates in the composition of the proposed composition for a protective and decorative coating of building products makes it possible to impart to the proposed composition for a protective and decorative coating of building products the properties of coalescents, which facilitate the formation of a polymer film during the drying process, a decrease in the film formation temperature, which makes it possible to use the proposed composition for a protective and decorative coating of building products with a glass transition temperature significantly higher than room temperature, to increase the fluidity of the composition and give it the necessary consistency in order to facilitate its use from the point of view of the abrasive resistance of the forming polymer film, volatility and odor, as well as the drying rate.

The use of volcanic zeolite with a grinding degree of no more than 0.28 microns in the proposed composition for a protective and decorative coating of building products improves corrosion resistance and enhances the strength characteristics of finished building products coated with the proposed composition, including walls and floor coverings. It also reduces cracking of the wall or floor surface to which the composition is applied, enabling the formation of a polymer paint film 0.2-0.5 mm thick. Zeolite is a natural mineral capable of absorbing and retaining harmful substances such as toxins, ammonia, and various odors. It helps create a clean and fresh indoor atmosphere, promoting well-being with its antibacterial properties, making it an ideal material for creating a healthy and hygienic indoor environment.

The use of acrylic emulsion in the proposed composition for protective and decorative coating of building products makes it possible to impart to building products painted with the proposed composition properties of increased wear resistance, washability, and resistance to fungi and algae.

The use of vinyl polymers - copolymers of vinyl chloride and vinyl acetate - in the composition of the proposed composition for protective and decorative coating of building products makes it possible to impart to building products painted with the proposed composition the properties of a binding material, which is a non-sticky and opaque film former.

The use of shungite with a grinding degree of no more than 0.28 microns (specific surface area of 50 ^m2 /kg) in the proposed composition for a protective and decorative coating of building products allows building products coated with the proposed composition to be protected from ultra-short radio frequency electromagnetic waves (emitted, for example, by mobile phones) and other radiation. The preferred grinding degree for shungite is 0.25 microns, as the finer the grinding degree, the more energy and complex the equipment required.

The natural mineral shungite has specific unique properties, in particular, it is a strong diamagnetic substance with the ability to shield and absorb electromagnetic radiation of various oscillation frequencies [3].

The mineral shungite is a rock mined in the Karelian Prionezhye region; it has an aluminosilicate framework filled with so-called “shungite carbon,” which occupies an intermediate position between amorphous (soot, anthracite, etc.) and crystalline (graphite, diamond) forms of carbon, and has unique properties that provide a wide range of possible applications, including protection against various types of radiation [4].

The use of the above components in the specified ratio in the proposed composition for protective and decorative coating of building products leads to the emergence of a synergistic effect and makes it possible to achieve the required technical result.

For the production of the proposed composition for protective and decorative coating of building products, the following materials can be used, for example:

- glycol ethers and glycol ether acetates - coalescents, produced by KHIMSERVIS LLC, Moscow;

- shungite according to TU 9648-007-49933708-02 - fractionated from the Zazhoginsky deposit S _sp = 0.25 microns, produced by Research and Production Complex CARBON-SHUNGIT LLC, Petrozavodsk;

- natural mineral component of volcanic origin zeolite - fractionated from the Kholinsky deposit S _sp = 0.25 microns, produced by Zeolite-Trade LLC, St. Petersburg;

- vinyl polymers - copolymers of vinyl chloride and vinyl acetate, manufactured by NORTEKS LLC, Moscow;

- titanium dioxide - pigment, Ti-Pure TS-6200, produced by Kemur Chemicals Rus LLC (Chemours), Moscow;

- acrylic emulsion - pure acrylic binder IPPOL PPW 5220, manufactured by KHIMSERVIS LLC, Moscow:

- tap drinking water that meets the requirements of GOST 23732.

- reinforcing filler - for example, chopped carbon fiber, produced by UMATEX Group (Umatex, Khimpromengineering NPK. Rosatom), Moscow;

The process of preparing the proposed composition for a protective and decorative coating of building products for protection against ultra-short radio frequency electromagnetic waves, emitted, for example, by mobile communications, and other radiation, building mixtures involves mixing the source materials, dispersion, dilution and adjustment, and pouring into containers.

Shungite is ground to a particle size of no more than 0.28 microns. Each component is weighed and pre-mixed, then the ground shungite is mixed with dry components (vinyl polymers, titanium dioxide, and others) to a constant weight. Any clumps of titanium dioxide are ground to their original size over 48 hours to ensure dispersion in the liquid base material of the composition for a protective and decorative coating of building products. Ball mills and graters are used for grinding. The process of abrasion and crushing wets each titanium dioxide particle. The ground material flows by gravity into a container located below, where other additives, such as pigment dyes, are then added.

At this stage, binding agents—coalescents—are added. After mixing, the composition for the protective and decorative coating of building products is filtered and then, also by gravity, fed to the packaging area.

A paint (decorative) coating based on the proposed composition for protective and decorative coating of building products against ultra-short radio frequency electromagnetic waves (emitted, for example, by mobile phones) and other radiation, and construction mixtures, can be used for painting walls, ceilings, and floor coverings. To do this, apply the paint (decorative) coating to a floor primed with a special primer using a brush or roller in two 2.5-3 mm thick layers, with a mandatory drying time of at least 6 hours between coats.

The protective electromagnetic properties of building products painted using the proposed composition for protective and decorative coating are assessed based on the amount of electromagnetic wave energy absorbed and reflected by the sample at frequencies of 10 kHz and 1.2 GHz using a radiating antenna of a generator with a frequency range of 0.01-1200 MHz (outside and inside the test object). Tests are conducted in a cubic chamber (in-house fabricated) with a side length of 500 mm. The chamber walls are made of 15 mm thick plywood. The samples are painted on the inside with a ready-made composition for protective and decorative coating of building products and a composition beyond the limit, with a thickness of 0.5 mm on the top and side walls of the chamber and 1.0 mm on the bottom wall. The plywood walls are pre-primed with a special primer compound manufactured by Spiver (Italy). The top wall is made to accommodate control and measuring equipment inside the chamber. The rear wall of the chamber has an opening with a diameter of 25 mm for the outlet of the measuring cable.

The degree of reduction of electromagnetic field levels with a frequency of 460-2375 MHz in the radio frequency range is assessed using the method “Measuring the energy flux density of an electromagnetic field” according to SanPiN 2.2.4.1191-03 “Electromagnetic fields in industrial conditions”.

For experimental verification of the claimed composition of the proposed composition for protective and decorative coating of building products for protection against electromagnetic waves, the following compositions were prepared, wt. %:

Example 1:

titanium dioxide 5-6 vinyl polymers 16-18 acrylic emulsion 25-27 glycol ethers and glycol ether acetates 3-4 reinforcing filler 0.5-0.7 shungite with a grinding degree of 0.25 microns 40-45 water until the water-solid ratio is reached, specified in Table 1

Example 2:

titanium dioxide 8-9 vinyl polymers 20-24 acrylic emulsion 26-28 glycol ethers and glycol ether acetates 2-3 reinforcing filler 0.5-0.7 shungite with a grinding degree of 0.25 microns 30-35 water until the water-solid mixture is reached the ratio indicated in Table 1

Example 3:

titanium dioxide 9-10 vinyl polymers 18-20 acrylic emulsion 25-30 glycol ethers and glycol ether acetates 3-4 reinforcing filler 0.5-0.7 shungite with a grinding degree of 0.25 microns 30-40 water until the water-solid mixture is reached the ratio indicated in Table 1

When the titanium dioxide content in the proposed composition for protective and decorative coating of building products is less than 5 wt.% and more than 10 wt.%, this composition deteriorates its properties of inertness and resistance to UV radiation.

If the content of vinyl polymers in the proposed composition for protective and decorative coating of building products is less than 15% by weight and more than 20% by weight, this composition deteriorates its strength and barrier properties.

If the acrylic emulsion content in the proposed composition for protective and decorative coating of building products is less than 25% by weight and more than 30% by weight, this composition deteriorates its water resistance and viscosity properties.

When the content of glycol ethers and glycol ether acetates - coalescents, in the proposed composition for protective and decorative coating of building products is less than 2 wt.% and more than 5 wt.%, this composition deteriorates its properties in influencing the abrasive resistance of paint.

When the content of ground shungite in the proposed composition for protective and decorative coating of building products is less than 30% by weight and more than 45% by weight, and when the degree of grinding is more than 0.28 microns, this composition deteriorates its properties of protection against static electricity and electromagnetic fields of the radio frequency range.

If the content of the reinforcing filler in the proposed composition for protective and decorative coating of building products is less than 0.5 wt.% and more than 0.7 wt.%, this composition deteriorates the properties of dispersibility and elasticity.

Example 4. Natural volcanic zeolite is ground to a fineness of 0.25 microns. The ground natural volcanic zeolite is then mixed with titanium dioxide. Shungite is ground to a fineness of 0.25 microns. The ground shungite and titanium dioxide, including ground natural volcanic zeolite, are then mixed with a dry mixture of the above components, followed by drying at 22-25°C to constant weight. The proposed composition for a protective and decorative coating of building products is then manufactured using the following component contents, wt. %:

titanium dioxide 6-7 zeolite 2-4 vinyl polymers 15-17 acrylic emulsion 25-26 glycol ethers and glycol ether acetates 4-5 reinforcing filler 0.5-0.7 shungite with a grinding degree of 0.25 microns 35-40 water until the water-solid ratio is reached, specified in Table 1

When the content of ground natural volcanic zeolite in the proposed composition for protective and decorative coating of building products is less than 2% by weight and the grinding degree is less than 25 microns, the composition degrades its corrosion-resistant and strength properties. When the content exceeds 4% by weight and the grinding degree is greater than 28 microns, the setting time is reduced. The preferred grinding degree for volcanic zeolite is 0.25 microns, as the finer the grinding degree, the greater the energy consumption and the more complex the equipment required.

To experimentally verify the effectiveness of the proposed composition for protective and decorative coating of building products and the composition beyond the limits, mechanical and protective tests against electromagnetic waves of the radio frequency range were carried out on samples and prototype samples made on the basis of the proposed composition for protective and decorative coating of building products, the results of which are presented in Table 1.

The consumer and operational properties of coatings based on paints and enamels intended for interior work must comply with the GOST requirements specified in Table 1.

Based on the obtained data, the use of shungite with a grinding degree of more than 25 microns in the proposed composition for the protective and decorative coating of building products leads to increased energy costs in the production of the proposed composition for the protective and decorative coating of building products, an increase in the water requirement of the composition and a decrease in the physical and mechanical characteristics of the finished products.

Based on the above, the new technical result achieved by the proposed invention is provided by the following technical advantages compared to the prototype.

1. The proposed technical solution increases the flexibility of the polymer paint film formed by the proposed composition for protective and decorative coating of building products, demonstrating high resistance to water and alkalis. It also exhibits excellent wet abrasion resistance. It improves the film's expansion and elongation balance.

2. The use of the proposed technical solution allows for an increase in wear resistance, heat resistance, oil resistance, drying speed, hiding power, and surface elasticity of construction products painted with the proposed composition for protective and decorative coating, including walls and floor coverings, by at least 2 times due to the use of shungite with a grinding degree of no more than 25 microns and a content of 30-45% by weight.

3. The use of the proposed technical solution allows for a simplification of the production technology of the proposed paint for construction products by at least a factor of 2 due to the cost-effectiveness of the raw materials used due to the lighter weight of the applied composition (due to a reduction in the thickness of the applied layer, which does not impair the effectiveness of protection against ultra-short radio frequency electromagnetic waves).

4. The application of the proposed technical solution allows for a 5-fold increase in adhesion to surfaces made of galvanized steel, wood, cement mortar, and other materials, which leads to increased wear resistance and vapor permeability of surfaces painted with the proposed paint for building products, including walls and floor coverings.

5. The proposed technical solution increases the eco-friendliness, corrosion resistance, and odor absorption of the proposed paint by at least 10% due to the use of zeolite, a natural mineral component of volcanic origin. The inclusion of zeolite in the paint also allows for beautiful wall, floor, and ceiling decoration, adding elegance and beauty to the interior. Zeolite is a natural mineral capable of absorbing and retaining harmful substances such as toxins, ammonia, and various odors. It helps create a clean and fresh atmosphere in the room, promoting well-being with its antibacterial properties, making it an ideal material for creating a healthy and hygienic indoor environment. The combination of shungite and zeolite in interior decoration helps purify the air of harmful impurities and odors, enhances its protective properties against radio-frequency electromagnetic waves, which improves the energy of the room and, consequently, the health and overall well-being of occupants, contributing to a harmonious atmosphere.

6. Natural textures and unique colours create an atmosphere of harmony and tranquility, bringing joy and satisfaction every time you enter a room painted with the proposed technical solution.

Sources of information

1. Russian Federation Patent 2420549. 2011. C09D 5/32; C08L 63/00; C08K 7/04.

2. Patent of the Russian Federation 2097356. 1997. C04 B 28/34.

3. Doronina Yu. Shungite is a savior stone. St. Petersburg: Nevsky Prospect. 2003. P.71-78.

4. Glebashev S.E. Shungite: reference book; scientific ed. E.I. Aksenov, Yu.V. Sementovsky. Moscow: Geoinformmark. 1999. 17 p.

Claims (4)

1. A composition for a protective and decorative coating of building products, comprising titanium dioxide, shungite, a filler, an acrylic-containing compound, an ether-containing compound and water, characterized in that vinyl polymers are additionally introduced therein, the ether-containing compound is in the form of glycol ethers and glycol ether acetates, the acrylic-containing compound is in the form of an acrylic emulsion, the filler is made reinforcing in the form of talc, or clay, or mica, or glass flakes, or carbon fibers, or kaolin, or chalk with the size of the said filler components no more than 0.15 mm, wherein the shungite is made with a grinding degree of no more than 0.25 microns, with the following content of components, wt. %: titanium dioxide 5-10 titanium dioxide 5-10 vinyl polymers 15-20 vinyl polymers 15-20 acrylic emulsion 25-30 25-30 glycol ethers and glycol ether acetates 2-3 glycol ethers and glycol ether acetates 2-3 reinforcing filler 0.5-0.7 reinforcing filler 0.5-0.7 shungite 30-45 shungite 30-45 water the rest up to 100% 2. The composition according to claim 1, characterized in that the vinyl polymers are selected from polyethylene, polypropylene, polybutadiene, polystyrene, polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyacrylonitrile. 3. The composition according to claim 1, characterized in that natural zeolite of volcanic origin with a grinding degree of no more than 0.28 microns at a content of 2-4 wt.% is additionally introduced into it.