Specifications and types of organosilicon enamels
Among the incredibly wide variety of paints and varnishes, organosilicon enamels have many unique qualities. They are incredibly popular not only in the construction industry, but also in other industries. Such paints are ways to protect any surface from the harmful effects of the environment.
Such enamels have properties that make it possible to use this type of product where it is required to provide the best quality and maximum degree of stability of the painted surface.
Enamel has the effect of repelling water, and also has an immunity to temperature changes, due to which it can be used even in conditions of minimum and maximum temperatures.
The composition is not afraid even better than the sun, even with long-term influence, the pristine shade of the surface and its inherent technical parameters will not change. Enamels are created using a synthetic method based on silicon and air oxygen. This composition will give it special strength and structural reliability. The composition of organosilicon materials contains special impurities to prevent corrosion, which makes it possible to improve the quality and resistance of the treated surface to the influence of negative factors.
By adding acrylic resins and cellulose ethyl ester to the resin composition, manufacturing companies were able to achieve rapid drying of the enamelled surface.
Carbide layers in the paint and varnish composition ensure the ideal hardness of the coating, and they also prevent mechanical damage to the surface. Due to the combination of enamel with epoxy resins, resistance to the negative effects of chemical appeared. agents. Pigments have helped to expand the color gamut, which are also part of the enamel. They are able to withstand ultra-high temperatures up to +155 degrees, and at the same time they will not lose their original, primary shade.
Organosilicon compositions, in addition to their inherent unique qualities, have advantages and disadvantages compared to other types of paints and varnishes.
The main advantages include the following:
Cons of the material:
- Release of toxic gases when the composition dries.
- After long-term contact, it has a negative effect on the body.
Please note that organosilicon compositions differ in relatively low cost. They also do not need priming of the painted surface.
Most types of paints and varnishes do not have this opportunity.
Enamels based on organosilicon are usually classified as thermally stable and limited thermally resistant.
Limited thermally resistant
Fire-resistant thermal enamel (limited) has found application for facade decoration. The enamel limitation is imposed due to the content of pigments in the composition, which give the required shade for the paint and varnish composition. Most pigments do not withstand the effects of high temperature, and therefore they are called "heat-limited".
But this type of enamel perfectly resists the negative effects of the environment and can last up to 15 years. It should be noted that the majority of pigments in enamels make it possible to increase the resistance of the coating to the influence of ultraviolet rays.
These types of paints and varnishes include KO-983, KO-174, KO-168, KO-198, KO-42 and KO-5102. Coatings based on such materials have high physical and mechanical parameters and characteristics, lack of water absorption, resistance to moisture, perfect adhesion to ceramic / metal / glass surfaces, as well as resistance to sun rays, temperature extremes and environmental friendliness. Also, the enamel does not create a sediment during long-term storage and transportation, and it can be easily applied to the surface with various tools.
The main advantage of limited thermally stable compositions is the ability to apply at a negative temperature. In this case, the operational period in a harsh climate will be up to 10 years.
Organosilicon compositions are usually produced in the form of a suspension of pigments, as well as fillers with a solvent in the material. It will be more convenient to transport the products by any method in accordance with the norms in order to transport goods at temperatures above 0 degrees. It is important to thoroughly mix the composition and dilute with a solvent (composition no.
646, toluene and orthoxylene) before applying the paint and varnish composition. Still do not forget when processing surfaces with a special composition in order to give it strength and prime it. All irregularities can be removed with a putty, and after drying it is important to prime the surfaces again. The staining process is carried out at a temperature level of no more than +20 degrees. The enamel is applied in several layers with drying of each of the layers for 1/3 hour.
Consumption of paint and varnish material for each square meter is approximately 1/4 kg when coated in a single layer, and when painted in 2 layers - 0. 45 kg. The shelf life of such enamels is only 1 year.
Enamels are introduced in the composition paint and varnish anticorrosive compounds, which are designed to paint surfaces that are affected by high temperatures and high levels of humidity. Quite often, thermal compounds are used in repair work and construction, for painting chimneys, stoves and fireplaces.
Thermally stable organosilicon materials, in turn, can have high hydrophobic parameters. These types of enamels are designed to be applied to the substrate to protect against chipping and slate. Thermally stable compositions based on silicon organic matter include KO-84, KO-89, KO-88, KO-83, KO-818, KO-813, KO-870, KO-868, KO-814, KO-8101, KO -8104 and KO-8111. All of them have long-term thermal stability (up to +600 degrees). They are used in order to be applied to metal surfaces, as well as to paint chimneys / fireplaces / barbecues and other buildings that are exposed to long-term exposure to high temperatures.
Quite often, thermally stable agents are used in the oil industry - for painting pipelines with heated steam, gas pipelines, oil pipelines, chimneys and other consistencies that are exposed to high temperatures and negative environments with oils, salts and oil products. Enamels are produced in different colors - gray, silver, white and brown. Before applying the composition, we recommend shaking the jar until the mixture is homogeneous, and then measure the viscosity. If necessary, you can dilute it to the required value. Composition No.
646, xylene, toluene and solvent are used as diluents. Consumption per square meter ranges from 0.1 to 0.13 kg under conditions of elevated temperature, and under atmospheric conditions and low temperatures from 0.14 to 0.
18 kg. The shelf life of thermally stable enamels will be 1 year.
The characteristics of organosilicon enamel are such that the industry uses anti-corrosion compounds KO-811 to protect steel and titanium surfaces. They are available in black, green and red. The enamel formulation includes asphaltene-resinous substances, special fillers in order to preserve all the positive qualities of the paint and varnish material during storage.
Anti-corrosive agents are able to withstand temperature limits from -65 to +400 degrees. Coating KO-811 has increased protection against atmospheric agents and resistance to corrosive substances. When applying such enamels, no preliminary priming is required, but it is important to carry out the process of applying paint only under factory conditions, including at negative temperatures. The composition is applied by means of a spray gun in 2 layers. Consumption of such enamel for each square meter is 0.
13 kg, and toluene, solvent and xylene can be used as diluents, and the shelf life is 1 year.
For a two-stage surface treatment, for each square meter, from 0.17 to 0.25 kg of enamel is required. The flow rate may vary slightly depending on the degree of porosity of the surface.
For thermally resistant paints and varnishes, the consumption will be much less, since they are applied on metal surfaces that are not able to absorb enamel. In this case, you need 0. 15 kg of enamel per square meter.
Due to their unique qualities, organosilicon enamels have been able to gain an excellent reputation in terms of repairs, construction and finishing works. When building buildings, such paints and varnishes not only provide reliable protection against negative qualities, but also decorate the wall surfaces of the structures being built.
Due to the availability and extensive possibilities, silicon organic compounds are also used for metallurgy, port structures, nuclear energy, power plants, machine-building / chemical / shipbuilding industry, as well as the oil refining and gas industry, waterproofing road surfaces and hydraulic structures. Such compositions are applied to the main pipeline and building plaster, brick buildings, bridges, oil pipelines, as well as transporting refrigerants. In the food industry, such types of enamels have found application, but there are certain sanitary and hygienic requirements for painting surfaces. According to these standards, paint and varnish compositions can be divided into the following types:
The first type of materials is used only for certain works that are allowed by all sanitary standards. A list of the likely use of such formulations can be found on the information on the packaging label for paintwork materials. The second type of paint is used in kindergartens, schools and clinics. They are also ideal for coloring the dining room, kitchen and other rooms. The established standards make it possible to apply them safely without any restrictions.
Paints and varnishes using silicon organics are applied to the surface to be treated in compliance with the painting technology:
- Preparatory surface stage - if the surface is made of metal, you need to get rid of dirt, dust and rust. After removal, the surface can be degreased with solvents and the surface must be cleaned either by hand or mechanically. If required, surfaces can be primed in 2-3 coats if the mixture is compatible with organosilicon enamels. After applying the primer, it is important to let the surfaces dry out completely, because such paint should not be used to cover wet surfaces.
- Preparation of coloring compositions before application - such compositions are sold ready for use, but if for some reason the mixture has become very thick, it is important to dilute it with xylene and toluene, and then thoroughly mix the solution.
To reduce consumption, the enamel should not be diluted, since in this case the resulting film will not be of very high quality and high strength.
- Application of enamel. The coloring compound can be applied with a brush, spray gun, roller and airbrush. Painting is carried out in the range from -25 degrees to +42, but the most important condition is that it is important to apply the paint and varnish material to dry surfaces. On a metal coating, enamel is applied in 2 layers, and on cement, concrete and brick in 3 layers.
It is important to allow time for the coating to dry after each coat has been applied. The most important characteristic that is important to control when applying paint to a surface is the thickness of the resulting film. The ideal option would be 40-50 microns. Use blower or IR heaters to speed up drying.
In the following video you will find recommendations for the use of organosilicon enamel.
Posted By: Work Style |13, Nov 2020
Posted By: Work Style |12, Nov 2020
Posted By: Work Style |06, Nov 2020
Posted By: Work Style |13, Nov 2020
Posted By: Work Style |09, Nov 2020