Polyurethane paint (enamel
UR 1012)
Polyurethane paint UR 1012 is a two-component system consisting of semi-finished enamel and polyisocyanate hardener, mixed before use.
Semi-finished enamel is a suspension of pigments and fillers in a solution of polyester acrylate resin with the addition of solvents and targeted additives.
Polyurethane paint (enamel UR 1012 ) is intended for anti-corrosion protection of the internal surfaces of tanks, tanks, storage facilities for light petroleum products, pumping and tank equipment operated in open conditions industrial atmosphere temperate, cold, marine and tropical climates, as well as in an atmosphere containing corrosive agents.
Coating system consisting of polyurethane enamel, applied to a primed surface, retains protective and decorative properties in an open industrial atmosphere of temperate and cold climates - 12 years, in an atmosphere of marine and tropical climates - 5 years, subject to installed technology application, storage and transportation rules.
Polyurethane paint (enamel UR 1012 ) is produced various colors in accordance with the RAL color chart.
Preparing the surface for painting
.
The surface to be painted must first be cleaned of mechanical impurities, water-soluble salts, fats, and oils. Degreasing is carried out with a rag moistened with solvent, xylene, acetone or other aromatic solvents.
The surface must be dry and clean before painting.
Cleaning from rust, scale, residues old paint done manually or mechanically up to St 2 or by shot blasting (sandblasting) to degree SA2 - SA2.5 according to the international standard ISO 8501-1:1988. This cleaning gives the required adhesion.
Preparation of polyurethane paint
to application.
Before use, semi-finished polyurethane paint (enamel UR 1012 ) mix thoroughly and add required amount hardener, mix, stand for 15-20 minutes. If necessary, polyurethane paints are diluted to working viscosity using a VZ-246 viscometer with a nozzle diameter of 4 mm at a temperature of (20.0 ± 0.5) 0C with solvent R-5A (according to GOST 7827-74) or a xylene mixture (according to GOST 9410-78 or GOST 9949-76) and butyl acetate (according to GOST 8981-78) in a ratio of 4:1. Recommended working viscosity when applied by brush or roller is 35 s, by pneumatic spraying – 8-22 s, by airless spraying – 45 s.
Polyurethane paints (enamels UR 1012 ) after dilution, mix thoroughly again and filter through a sieve with a 0.1H-0.2N mesh according to GOST 6613-86 or a similar imported sieve, or a mesh made of synthetic fabric(nylon, polyester or polyamide) with a nominal hole size of 100-200 microns according to GOST 4403-91.
Coloring
.
Polyurethane paints (enamels UR 1012 ) are applied to the surface by pneumatic and airless spraying, with a brush or roller in 1-2 layers at an ambient temperature of 5 to 350C and a relative air humidity of no higher than 80%.
Polyurethane paintsapplied to a surface previously primed with FL and EP primers.
Theoretical consumption of polyurethane paint
(enamel UR 1012 ) for a single layer coating 80-110 g/m2.
Practical consumption depends on application method, degree of surface preparation and product configuration.
Guarantee period
storage of semi-finished products – 12 months from the date of manufacture.
The shelf life of polyurethane paint (a mixture of semi-finished product with a hardener) is at least 6 hours.
You can buy from us
polyurethane paints sUR 1012price:
For dilution paint and varnish materials(paints, varnishes, enamels, glues) solvents are often used. They come in all kinds of varieties. And each of them has its own characteristic properties. In this article we will tell you in more detail what a solvent for acrylic paints is, oil paints, varnish, glue.
Acrylic solvent
This composition is often used to dissolve polyurethane resins, two-component acrylic paints, primers. Although acrylic paints can be diluted with ordinary water; the use of this solvent significantly speeds up the process when the coating layer dries. In addition, its use allows you to achieve a flat and smooth painted surface without the formation of any smudges or white-milky deposits.
Solvent for acrylic has the form of a transparent liquid with a specific odor. It is produced in several versions, which differ in drying time (slow, medium and fast). And they are used in certain conditions, depending on humidity and air temperature. For example, in cold weather it is better to use a composition with a high evaporation rate. On a hot day, on the contrary, it is advisable to use a solvent with low level evaporation.
It is advisable to store the composition in well-ventilated, cool and dark rooms (without access of UV rays to the packaging). It is also important that basic norms and standards apply fire safety. The packaging itself must be tightly closed and in an upright position.
Solvent for oil paints
For thinning paints oil based The following solvents are often used: white spirit, gasoline, acetone, turpentine. We will tell you in more detail about each of them. So, white spirit is produced during the distillation of oil. It is used for dissolving alkyd, bitumen, oil paints, as well as for rubbers, drying oils, epoxy esters and polybutyl methacrylate. Nefras 150/180 can also be used instead (as a substitute). Turpentine - manufactured industrially when processing pine wood.
The following types are distinguished: dry distillation, steam, sulfate, extraction. The best is considered to be the one that contains more pinene. It is used to dilute oil, glyphthalic, bitumen, and pentaphthalic paints. Acetone is prepared by treating cumene hydroperoxide. This is a good solvent for varnishes and paints based on vinyl polymers. It is also used for diluting polyacrylates, epoxy resins, chlorinated rubber, vinyl chloride copolymers.
Solvent for glue moment
A glue solvent is necessary not only during the process of applying the composition, but also when the mixture has already dried. For example, there may be times when you need to remove some parts or wipe off a stain. The best solvents for superglue are generally ethyl acetate, xylene, butyl acetate and acetone. Sometimes thinners for acrylic and polyurethane varnishes and paints are also suitable. Let's talk about them in more detail. Ethyl acetate - used for nitrocellulose and polyacrylate paints and varnishes. Like acetone, it can dissolve almost all polymers.
Xylene solvent - consists of a mixture of isomers, which is obtained from coal or oil. Therefore, it is divided into stone and oil. It is used for phenolic, alkyd, chlorinated rubber, bitumen, epoxyphenol paints and varnishes. Butyl acetate is made by heating acetic acid and butyl alcohol with the addition of catalysts. Used for diluting oil esters, chlorinated rubber, fats, cellulose. And if you add a small amount of butyl alcohol to it, it can prevent the formation of a paint film.
Varnish thinner
In order to dilute the varnish, you can use the following solvents: benzene, R-4, R-4A, 646. If we talk about the first one - benzene, then it is obtained by pyrolysis of raw rock benzene and oil. It is an excellent thinner for rubbers, fats, oils, waxes, cellulose, esters, silicone and cresol-formaldehyde resins. If you need to dissolve polyurethane varnish, then compositions R-4 and R-4A are also suitable.
The main ingredients of these mixtures are: esters, ketones, hydrocarbons. It also contains some components that can significantly increase the efficiency of dissolving paintwork materials. They are used for many paints and varnishes - varnishes, putties, primers, enamels. 646 solvent is suitable for treating the surface before applying paintwork materials (degreases it), and also effectively dissolves nitro-enamel and nitro-varnishes.
Polyurethane is synthetic material, one of the varieties elastomers. It withstands exposure to aggressive environments, high and low temperatures. During production, polyurethane can be given any mechanical characteristics, it is produced in the form of both viscous liquids and solids.
Due to these properties, it is widely used in different areas industry. Polyurethane for metal has good protective properties; it perfectly resists aggressive atmospheric influences and other destructive factors for a long time.
Specifications
This paint and varnish material is a suspension, the main components of which are:
- polyurethane compositions;
- fillers;
- colored pigments.
In industry, polyurethane paint is used mainly for protection steel structures from corrosion.
Already three decades ago, when it first appeared, it was actively used for painting bridges, airplanes, cars, interior elements, household electrical appliances, and so on, made from elements. Since then, the range of this type of paint and their range have expanded significantly.
What's happened perchlorovinyl paints read our article.
Basic specifications polyurethane paint for metal:
- conditional viscosity - 50-90 units;
- share of volatile substances - up to 34%;
- film adhesion - about 2 points;
- after drying, it is resistant to temperatures from −40°C to +150°C;
- film resistance to mechanical shocks - not less than 50 cm;
- hiding power - up to 75 g/m2;
- average consumption - 150 g/m2.
Properties
To the main benefits polyurethane paints for metal include:
- high adhesion to unprimed metal;
- resistance to aggressive influences of the atmosphere, fresh and sea water and other destructive factors;
- short drying time - from 2 hours (depending on the type and composition of the specific paint);
- water-dispersed polyurethane paints are environmentally friendly and cannot cause harm to health even when working with them regularly without protective equipment.
Flaws polyurethane paints and varnishes:
- high cost compared to other types of paints and varnishes;
- The share of polyurethane paints on the market is small, they are presented in relatively few stores, so finding a composition suitable for its properties can be difficult.
Types of polyurethane paints
By composition polyurethane paints and varnishes are divided into two groups:
- one-component - such paints contain all the necessary substances, and they can be applied straight from the can;
- two-component - before using this type of polymer paint, it is necessary to mix the compositions, which are supplied in two separate containers.
One of the cans of two-component paint contains the resin, and the other contains the hardener.
It is stronger than a one-component paint composition and more resistant to aggressive influences.
Two-component dye stable to impact:
- acids;
- alkalis;
- different types of fuel;
- machine oil;
- fresh and sea water, waste water.
It polymerizes and sets without the participation of water vapor in the air, so the range favorable conditions to apply it more widely.
Before use, you can mix the required amount of the composition, and the remaining components of the mixture, located in two different jars, will retain their properties even after very long storage.
One-component coloring compositions are divided into three groups:
- polyurethane paints based on organic solvents;
- alkyd-urethane;
- water-dispersed polyurethane paints.
The first type, in addition to polyurethane and pigments, contains solvents such as xylene or toluene.
It is better to dilute them with licensed solvents specifically designed for such purposes.
This paint polymerizes and hardens due to the contact of its binding components with atmospheric moisture. Thus, if the indoor air is too dry, the applied layer will takes a very long time to dry.
A distinctive feature of the second type of paint is the presence in the composition alkyd urethane varnish. These compositions are distinguished by a very short drying time - from one and a half hours. It is used as a solvent for such coloring compositions. White Spirit.
Water-dispersed polyurethane paints received this name because water serves as a solvent for them. Their main advantage is the absence unpleasant odor and harm to health when working with them without personal protective equipment. Such colors grab when water evaporates from them.
Another variety - powder paint. It is a homogenized dry mixture, which includes:
- polyester resin;
- filler;
- hardener;
- pigments.
Polyurethane powder paints belong to the group thermosetting coloring compounds.
They are applied to the surface, after which the product is subjected to heat treatment, during which the particles fuse and enter into chemical reactions with each other. As a result, a solid and exclusively durable coating . Powder compositions are well suited for painting mechanical engineering products.
Features of application when painting
To ensure optimal adhesion of paint to metal, before applying it, all surfaces must be cleaned, removing old paint and rust, and dried. For better application they can also be cover with soil.
If it is intended to apply two-component paint, the compositions located in different cans must be mixed in a container of suitable size using construction mixer. Thanks to its use, you can achieve optimal homogeneity of composition.
The resulting coloring composition must be used within a certain time - from 6 to 72 hours, after this period the residues will be unusable. If necessary, one-component polyurethane paint can be diluted with a suitable solvent to bring it to the desired consistency.
You can apply paint using a brush, roller or spray gun. This must be done at a temperature from −10°С to +30°С, relative humidity air should be within 95%.
A layer of polyurethane paint is durable and durable coating which will reliably protect the surface from aggressive influences. With its help you can significantly extend the service life of any metal products.
Find out how to paint a galvanized roof from the video:
Parquet chemicals are a group of products used to protect and decorate wood floor, wall and ceiling coverings. This includes varnishes and paints, primer mixtures and putties, stains and tinting, adhesives, antiseptics, solvents and thinners. A large number of Store-bought wood varnishes are in most cases a liquid, ready-to-apply mixture. The question arises: is it possible, and how, to dilute the varnish if it is too viscous?
When diluting varnish, the main thing is to follow the correct proportions.
To answer this question, several factors must be taken into account. First of all, we turn our attention to the key composition of the mixture. Second, select the required solvent. Third, when mixing, we maintain proportions so as not to reduce the quality of the material. Let's take a closer look at how you can dilute thickened varnish and how to do it according to the rules? Also, what should I use to remove the old protective coating from wood and how should I care for the tool?
Dilute, dilute or dissolve
At first glance, there is no difference. With help special means we bring the varnish substance into a “working state”. A solvent is a liquid that dissolves dried varnish, bringing it from a solid to a liquid state. We use a thinner if we need to adjust (reduce) the viscosity of paints.
Certain types of organic eluents serve dual roles, but some may be effective in one application but completely useless in another. So, for example, white spirit can be used to dilute compositions of polyurethane, alkyd and oil groups. However, if the varnish has dried, it will not be possible to dissolve it with white spirit.
White spirit can be used to thin certain varnishes.
But shellacs, on the contrary, are equally dissolved and diluted with denatured alcohols. However, we will not go into such subtle details.
If you need advice on how to dilute varnish or what to use for diluting paints, it is better to consult with specialists.
Polyurethane mixtures
Polyurethane-based varnishes, paints, primer mixtures, adhesives and more contain polyurethane - a modern polymer material. The totality of its parameters exceeds such famous materials as rubber, plastic, rubber, and metal. To obtain paint and varnish and adhesive solutions of high strength, in commodity production it (polyurethane) is mixed with special chemicals.
A lot of varnishes are made on a polyurethane basis and on a water basis. This parquet chemistry is environmentally friendly and non-toxic.
If you need to make the substance more liquid, you can use the following as a diluent for polyurethane-based compounds:
- toluene;
- xylene;
- acetone;
- eluents such as R-4, R-5.
Acetone - modern remedy for thinning polyurethane-based varnishes
Alkyd mixtures
U alkyd compositions good adhesion, moisture resistance, insensitivity to ultraviolet radiation, reliability. They can be used for interior and exterior work. Alkyd mixtures contain the main element, organic solvents, driers (for faster setting), and additives. Key element May be:
- pentaphthalic resin;
- glypthal resin with cotton oil;
- a mixture of melamine-formaldehyde and alkyd resins.
To enhance the parameters of materials, alkyd resin parts are often included in multicomponent varnishes, paints, and enamels. The classic thinner here is white spirit.
Bitumen mixtures
Bituminous varnish is a mixture of a specialized grade of bitumen, a wide variety of resins and oils. After drying, a strong black film will appear on the surface, moisture-resistant and insensitive to chemicals. It is considered fairly new in household use material. Belongs to the inexpensive category. It is more often used as an anti-corrosion layer for protection.
For wood surfaces, it is used when there is no need to highlight the natural texture of the base (instead of paints). Bituminous material has found use in the form decorative covering for the effect of surface aging (patina). Another original characteristic of bitumen mixtures is cool gluing. The bitumen-based solution is diluted with white spirit.
To prevent it from thickening during storage, the container must be airtight. The storage location should be dark (without direct sunlight), with moderate temperature and humidity.
Bituminous varnish very reliably protects the surface from moisture and chemical influences, diluted with white spirit
Yacht varnishes
Yacht (or yacht) varnish is considered one of the most effective means of protecting the surface of natural wood. Already from the name the specifics of the area where it is used are clear. In addition, the yacht composition is perfect for woodworking outside and inside any objects (not just boats, boats, yachts). It is insensitive to moisture, temperatures, and aggressive environments.
Yacht varnish. Important characteristics:
- high degree of protection for wooden structures;
- physical and mechanical immunity to environmental influences;
- durability, increasing the service life of wood.
To achieve such results, toxic chemical elements (toluene, xylene) are used during the manufacture of the material. There are several production technologies:
- alkyd yacht (based on the organic solvent white spirit);
- urethane-alkyd yacht (the eluent is the same, but in smaller quantities);
- alkyd-urethane yacht (solvent additives are highly volatile);
- acrylates (water-based compounds).
Dilutes yacht varnish white spirit, no more than 5% of the total volume. The solvent acts on the substance only in its fresh form. After drying varnished coating from the parquet will become immune.
Varnish for yachts, boats, boats is highly resistant to wear and can also be diluted with white spirit
How to remove dried varnish
Above, for the most part, are listed ways to improve the consistency if the varnish has thickened. What should you do to remove varnishes and paints from painting tools? Can synthetic-based material be removed from wood after application?
It is simply impossible to remove outdated furniture or parquet varnish from the surface of wood. In most cases, where this is feasible, scraping or grinding is used. For non-mechanical removal, the type of solvent is selected personally. The key composition and Chemical properties varnishing.
The simplest method of removing unsuitable parquet flooring with a protective effect is the use of a specialized remover. The substance is a chemical mixture. You can use liquid, gel or powder. Acetone copes with the simplest types of paints and varnishes. Denatured alcohol is more suitable for removing shellac.
First, a liquid, gel or powder is applied to the varnish surface. Then you need to wait for the film to soften. To speed up the process, it is recommended to coat the finished surface with polymer ethylene. As time passes (from 40 minutes to 4 hours), the outdated varnish will begin to swell and darken. What to do next?
To remove softened varnish, it is more convenient to use a spatula. You must work carefully so as not to damage the wood surface. What to do if the old protective coating was not completely removed the first time? If necessary, the finishing can be repeated.
To remove substance residues from painting tools, use:
- Water-based parquet varnish is washed off with a warm water-soap solution;
- White spirit, kerosene, and turpentine are suitable for many organic solvent-based paints. The remaining substances can be rinsed off well, then the instrument is washed with some household chemical and rinsed thoroughly in water.
When choosing the type of eluent for diluting paint and varnish mixtures, the main thing is to carefully study the composition and also use the manufacturer’s advice indicated on the packaging.
You need to remember about personal protective equipment, especially if you have to work with strong-smelling, quick-drying compounds. Ventilating the room during and after work will protect against poisoning by toxic fumes. These materials should be kept away from children.
Why is polyurethane varnish needed for wood?
Products from natural wood have been a huge success for many years. It is no secret that natural material requires reliable protection, since it is afraid of moisture, is not resistant to technical fluids, and has difficulty resisting natural atmospheric influences and mechanical damage.
For maximum reduction negative consequences, wood products must be processed using various chemical compositions. And polyurethane varnishes are becoming one of the best helpers in this matter.
Types of polyurethane varnishes
The most commonly used two-component polyurethane varnish, modern manufacturers offer just such a composition.
In the case of one-component polyurethane varnishes, everything is very simple. You don't need any additional preparation to use them. This varnish consists of several independent components. There is an opinion that the use of two-component products is difficult, this is not so. Before applying it to the surface, you will simply need to mix the base and hardener well in certain proportions. The correct proportions are almost always indicated by the manufacturer on the packaging or in the instructions. Therefore, there are no problems.
According to the degree of gloss (gloss), the varnish is divided into:
- glossy;
- matte.
Advantages and advantages
By choosing a polyurethane varnish for natural wood, you get numerous benefits:
polyurethane coating creates with varnish reliable protection from negative mechanical influences, dirt, grease, dust;
- varnish increases the service life of any product, even if they are subjected to regular and intense loads. An example is the parquet floor of the hallway;
- polyurethane coating has an increased level of abrasion resistance;
- a product on which a layer of varnish is applied receives better aesthetic characteristics. Amazingly beautiful and original structure natural material is not hidden by a layer of opaque material, because such varnish is highly transparent;
- elasticity. Thanks to the special consistency, applying polyurethane-based varnish to wood is easy and simple, even if the product has a complex configuration. In case of moderate deformation, cracks will not appear on the treated surface. In addition, the composition has good adhesion and will not peel off.
Terms of use.
Before using polyurethane varnish on wood, you need to carefully prepare the wood surface. To do this, you must rid it of dirt and polish it. The polyurethane varnish itself is applied using a sprayer. Here a lot depends on how large the surface that needs to be treated is. Taking into account the chosen method, the desired consistency of the product is selected. IN certain situations the composition is diluted with a synthetic solvent.
Two-component polyurethane varnish requires compliance own rules. One of the most important things says that it is necessary to observe the proportions when mixing very strictly. If you do not pay attention to the manufacturer's recommendations, which he indicated in the instructions, then as a result the mixture will not harden, crack or fall off. The finished mixture has a limited lifespan; after mixing, the polymerization process occurs. If ready mix If the varnish and solvent dries out, it cannot be diluted; polyurethane varnish is irreversible.
Always prepare as much compound as you need to apply at one time. There is no need to stock up on wood varnish when preparing it for future use.
The number of layers required varies and depends on how it will be used in the future. wood material. But general recommendation The advantage is that you don’t need to skimp on the composition and apply less than two layers. You must wait before applying a new coat. How many? You can find this information in the product instructions. There is no need to refuse to follow the rules.
To mix two-component polyurethane wood varnish, use the special container in which it was sold to you. Make sure that all remnants of the second component fall into the container as close as possible to the first. You can break correct proportion composition if there is a lot of mixture left on the walls and bottom of the jar. An incorrect proportion, in turn, will lead to the fact that all the characteristics and performance properties of the varnish will deteriorate.
Before you apply polyurethane wood varnish, you need to mix it well. Make sure that the temperature in the room during treatment is positive. The drying period of the finishing layer in most cases is approximately 7-8 hours.
How to choose?
Purchase protective compounds for wood processing can always be called an important process. After all, the cost of wood has remained high for many years. If you don’t know how to choose a polyurethane varnish, start from what properties it should have and what qualities are most valuable to you. For example, if you decide to purchase a composition to apply it to the floor, then determine in advance the intensity of future loads. In case of floor covering, which is not intended for large crowds of people, you can choose a polyurethane wood varnish that does not have a high degree of protection. If you want to treat a floor on which “mass gatherings” will be held in the future, and which quite possibly will be constantly and heavily soiled, choose products that have the maximum degree of protection and abrasion resistance.
Any polyurethane varnish for wood has good adhesion. It is resistant to chemicals. But if you want to get the maximum, then choose two-component formulations. They are the ones who stand out best performance in strength and elasticity.
If you can't choose polyurethane varnish for wood on our own, just contact the sales consultants of the Europroject-Center company for help. You can also familiarize yourself with the information in the catalog on the website.
However, we would like to say that these products are in any case high-quality and high quality. If you select a product from famous manufacturer Sayerlack, who cares about its reputation, will always achieve the desired results. But if you try to save money, then in this case you can become the owner of low-quality products. Choosing a polyurethane varnish for wood is not as difficult as it might seem at first glance. The cost of products is affordable and low, and therefore savings are simply inappropriate here. The Europroject-Center company offers a wide range of two-component polyurethane varnishes for Sayerlack wood.