Thermo-fire-weather-resistant paint-coating

FIELD: chemistry.

SUBSTANCE: invention relates to making coatings for different equipment and structural units of residential, public and industrial buildings and structures. Proposed is a paint-coating containing the following (in wt %): binder in form of solutions of acrylic (co)polymers and/or organosilicon resins in an organic solvent (10-25); additional binder in form of organosoluble polyurethanes (5-15); filler selected from microwollastonite, kaolin, micro-marble, micro-mica and/or inert barite filler (10-30); modifying additives made in form of ceramic and/or glass beads with size of 20-150 mcm (10-30); antipyrene additive (10-20) and pigment (2-4). The pigment used can be titanium dioxide. The suitable antipyrene additive is a compound from the group: phosphorus-containing compounds, hydroxides of aluminium or magnesium, zinc borate, melamine and pentaerythritol.

EFFECT: preparation of a coating with high thermo-, firer- and weather resistance, the coating also has good sound-proofing properties.

3 cl, 2 tbl, 9 ex

 

The invention relates to the chemical industry and applies coatings of various equipment, pipelines, metal, concrete, reinforced concrete, brick, wood and other building structures, residential, public and industrial buildings and structures. More specifically the invention relates to obtaining on the specified surface coatings with heat-and fire-resistance, heat-waterproof and anti-corrosion properties.

High-quality and heat-protective coating for a number of applications is of paramount importance, for example, when solving the problem of thermal insulation of pipelines and water supply when it is essential to ensure long-lasting protection of the pipe from external corrosion, because it is the main factor limiting their useful life. Just as important are such coatings and to protect any building structures made of metal, wood, etc. At the same time, the task of maintaining heat in residential and industrial construction, of course, is one of the primary, and the huge resources are being allocated. To solve both the first and second tasks of modern technology offers a wide range of solutions. By insulating materials, actively offer at the present time, in addition to well-known the mineral and basalt Wat and fibers, the use of different foamed polymeric materials, such as foamed polystyrene, polyethylene, polyurethane, polypropylene and other as minerals for corrosion protection of various painting materials (water dispersion, coating materials based on organic solvents), as well as protection of metal surfaces metal, resistant to corrosion, such as electrolytic zinc plating. Materials which would have had the joint effect of protecting surfaces from corrosion and thus would contribute to the conservation of heat and has a high adhesion property, at the present time practically does not exist.

Known composition to obtain a heat coating, which is a composition including an epoxy resin, a curing agent, the plasticizer, and glass microspheres with a diameter of 200-300 microns (EN 93052300, 20.07.1996). Known composition provides good mechanical and insulating properties of the coatings, however, refers to toxic substances, cumbersome and does not provide the necessary level of thermal insulating properties while protecting, for example, pipelines.

Currently in wide use are materials for water-based coatings as the most environmentally friendly materials. So, for example, known is Yong composition to produce a protective coating of pipelines from corrosion, including latex, silica sand, latex stabilizer, trisodium phosphate, glass fibre and water (SU 1717580, 07.03.1992). However, this arrangement also does not provide the necessary high complex heat-insulating properties of the obtained coating and full corrosion protection.

Closest to the claimed invention is a paint-coating comprising a binder, which consists of the solutions of acrylic (co)polymers and/or silicone resins in an organic solvent, modifying additives in the form of a ceramic and/or glass beads with a size of 20-150 μm, a flame retardant additive and pigment (EN 2310670, 20.11.2007). The said coating has such disadvantages as: insufficient thermo fire chemical resistance, firing shrinkage, as well as smoke.

Objective of the claimed invention is to remedy these disadvantages. The technical result is to increase thermo-, heat - and weather resistance of the coating.

The problem is solved and the technical result is achieved by the fact that the paint-coating thermo-fire-weather-resistant includes a binder, which consists of the solutions of acrylic (co)polymers and/or silicone resins in an organic solvent, modifying additives in the form of a ceramic and/or glass beads with a size of 20-150 μm, a flame retardant additive is a pigment. In the coating composition added an additional binder in the form of organic polyurethane and a filler selected from the group: micropollutant, kaolin, mikromramor, microslide and/or inert barite fillers. As the flame retardant additive used compounds from the group of phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol. The coating has the following ratio of components:

binder10-25%,
additional binder5-15%,
filler10-30%,
modifying additives10-30%,
a flame retardant additive10-20%,
pigment2-4%.

As a pigment may be used titanium dioxide. As the flame retardant additive can be used compounds from the group of phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol.

The paint according to the invention as above-mentioned binder contains a binder selected from the group which, includes silicone resin, various organic acrylic (co)polymers in the form of dispersions, emulsions, and additional binder is traditionally used for organic coatings polyurethanes. In particular, use polymethylsiloxane resin including a liquid siloxane rubbers (SCTN, SCTN-IN), polymethylphenylsiloxane resin PMPS (base lacquer KO-08, CO-915, etc.), polymethylphenylsiloxane rubbers (SCTP and others); PU-resin-based polyether and diphenylmethanediisocyanate or toluylene diisocyanate (for example); acrylic (co)polymers, for example copolymers of butyl methacrylate or methyl methacrylate and (meth)acrylic acid and possibly butadiene, acrylic dispersions, for example, based on styrene-acrylic copolymer, etc.

As the organic solvent used in typical organic solvents which dissolve the above polymeric binder, such as ethyl acetate, butyl acetate, acetone, toluene, etc., in particular paint may contain a copolymer of methyl methacrylate, butyl acrylate and methacrylic acid (BMP-5S, acrylic emulsion AK-211-23, butadienestyrene DMA, the dispersion of a copolymer of butyl acrylate and methacrylic acid (Lakris 41), copolymer of vinyl chloride with vinylidenechloride and maleic acid Vdvhmk-E-VDK and others.

Adding filler selected from the group: micropollutant, kaolin, mikromramor, microslide and/or inert barite fillers can significantly improve the heat resistance, thermal stability, chemical resistance, radiation protection and acoustic properties of the coating to suppress combustion and smoke formation, to improve the flame retardant properties of the coating.

As fire proofing additives in the paint according to the invention is used additives such as, for example, phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol. The paint obtained by dispersing the components in a mixer at a rotation speed of the working body is not above 300 rpm.

The coating is applied to various surfaces by brush or airless spray gun.

To ensure the high elasticity of the paint-coating it is necessary to use a liquid paraffins, which must be entered in the formula in the manufacturing process of paint.

In the tables presents the properties of the obtained coatings on the basis of the declared paint.

Thus, the paint coating is heat-, fire - and weather-resistant.

The coating is applied to a surface of any form of equipment, pipelines, metal, concrete, reinforced concrete, brick, wood and other building design the AI residential, public and industrial buildings and structures.

The range of application of the paint-coating is very wide and includes:

- the refining, transportation and storage of oil and oil products;

industrial communication (including pipelines, proprovide, ducts);

- water supply (tanks and tanks for storage and transportation of water tanks for potable water storage);

- heating systems (water heaters for hot water preparation, etc.);

aviation industry (the inner wall of the plane);

- shipbuilding industry (ship hull);

- automotive industry (interior parts of buildings buses, motor compartments, the roofs of cars, trailers, trailers, refrigerators);

- chemical industry (capacity to store nitrogen and the like);

- industrial construction (reflecting walls in plants steel mills, the roofs of the hangars and the top of the roofs of enterprises, the outer parts of the bulkheads, bridges, roofs, sheds, garages, piles in permafrost, air conditioning systems, etc.);

- housing construction (corrugated roof top, tile roofs, metal roofs and other walls of dwellings and the inner walls of old houses, etc.);

- the military-industrial complex (various military installations);

- Stroitel the STV road and railway bridges (lowers the freezing);

- fire protection system (to prevent condensation in the pipes and so on).

The coating simultaneously provides sound good properties, i.e. simultaneously performs and the role of the sound-absorbing coating, which is especially important when using it in the construction of houses.

Used the term paint-coating is traditionally used at the present time, especially in construction and is used for quite viscous paint materials such as mastics, putties.

TABLE 1
Examples of inks according to the invention
Name of the componentThe ratio of the components in the examples, wt.%
123456789
1. Binder
-Silicone resin (polymer clay is insulationa) 25-11---202325
-The copolymer of butyl methacrylate and methacrylic acid-25---20---
-Styrene acrylic copolymer dispersion---2525----
-polyurethane organic-based polyether and diphenylmethanediisocyanate (additional binder is) 115155515101515
2. Titanium dioxide424432444
3. Hollow beads with a size
-20 microns10-3020-18-30-
-150 microns-30- -30-16-10
4. A flame retardant additive:
-ammonium polyphosphate20--16-20--20
-metasilicate calcium-10-----18-
-aluminium hydroxide--15-- 20--
-mica Muscovite----17----
6. Filler
-Micropollutant30-----30--
-Kaolin-28------26
-Mikromramor--25----10-
-Microslide---30-25---
-Inert barite fillers----20----

TABLE 2
1. The conductivity of the paint-coating0.04-0.05 W/m·°C
2.FireAt least 30 min
3.Heat280-300°C
4.Operating temperature rangeminus 100°C - plus 280°C
5.The tensile strength of the coating tensile, MPa3.0
6.The tensile strength of the coating in compression, MPa4.0
7.Water absorption by volume, %1.5
8.The adhesion of the coating to the steel, MPa1.0
9.The adhesion of the coating to the concrete, MPa1.5
10.The adhesion of the coating to the tree, MPa1.2
11.Resistance to climatic factors in the services is of the open atmosphere of the moderately cold climate, years10
12.The adhesion of the coating to the steel after exposure to climatic tests, MPa1.0
13.The life of the coating, not less than, years10

1. Paint-coating thermo-fire-weather-resistant, comprising a binder, which consists of the solutions of acrylic (co)polymers and/or silicone resins in an organic solvent, modifying additives in the form of a ceramic and/or glass beads with a size of 20-150 μm, a flame retardant additive and pigment, characterized in that the coating composition added an additional binder in the form of organic polyurethane filler selected from the group: micropollutant, kaolin, mikromramor, microslide and/or inert barite fillers in the following ratio of components:

binder10-25%
additional binder5-15%
filler10-30%
modifying additives10-30%
a flame retardant additive10-20%
pigment2-4%

2. Paint-coating according to claim 1, characterized in that the pigment used is titanium dioxide.

3. Paint-coating according to claim 1, characterized in that the flame retardant additive used compounds from the group of phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol.



 

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1 tbl

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10 tbl

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2 tbl

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