Quick-drying drying oil for wood. How to protect a tree with natural drying oil. Drying oil for wood. Types and application. Video

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The processing of wood with drying oil has been practiced for several hundred years. Our ancestors used it to protect wood, give products a golden hue and make paints.

But, despite such an advanced age and the emergence of many alternative compositions, the impregnation of wood with drying oil is still relevant. About what this tool is, its types and methods of application, we will talk further.

What is drying oil and why is it needed

So, drying oil is a liquid fluid substance resembling oil, but with a thicker consistency. The color can vary from dark brown to golden yellow. The level of transparency can vary, although a completely opaque liquid is extremely rare and usually indicates quality problems.

Initially, all such compositions were made exclusively on natural oils. Most often used, although in some cases sunflower or hemp was used. Scientific and technological progress has made its own adjustments and now semi-synthetic and synthetic drying oils have appeared.

As for the scope, it is very diverse. Such compositions are the basis for the production of oily liquid and thick paints. A number of putties and grouts are made from drying oil.

It acts as a primer for many compositions in the processing of metal or concrete. But the most popular is the coating of wood with drying oil.

Types of compositions

As already mentioned, a wide variety of compositions are now being produced, referred to by the common name of drying oil. Experts identify several main areas. In particular, these are natural, semi-natural, combined, alkyd and synthetic compounds.

Compositions on a natural basis

The name speaks for itself. Drying, sometimes semi-drying vegetable oils are taken as the basis here. In rare cases and in small quantities, solvents can be added here, but only on a natural basis.

The standard is GOST 7931-76.

The composition based on linseed oil is deservedly considered a classic and of the highest quality.. It is a thick, light transparent liquid obtained by prolonged boiling and the addition of a desiccant.

The range of application is quite wide:

They can be used as a primer under wood, metal or plastered surfaces.
It is linen compositions that are used for the production of light oily thickened paints, grouts and putties. Putties and lubricating pastes are also made from them.
Most often it is used for interior work. Linseed drying oil for outdoor woodworking can theoretically be used, but this is not advisable, since its price is higher, plus there are targeted synthetic protective compounds.

How much the drying oil dries on the tree directly depends on the speed of the work. In this case, at a temperature not lower than 20ºС, the drying time does not exceed 24 hours.

Important: a desiccant is added to any such composition to one degree or another, in fact it is a kind of hardener. But you need to add it without fanaticism, as a rule, no more than 3 - 5% goes to 1 liter. Otherwise, the dried film will peel off.

Hemp oil formulations are slightly less expensive. They are darker in color. Therefore, they are used for the preparation of dark paints and putties. In other characteristics, they practically do not differ from linen.
Compositions based on sunflower oil are characterized by a longer drying time.. Even after a day, the surface will be slightly sticky. But such a coating is considered more elastic, but its strength and water resistance are significantly inferior to linen and hemp counterparts.

Semi-natural drying oil oksol

The characteristics of this type of composition are reflected in GOST 190-78. In percentage terms, it consists of 55% natural oils, 5% is desiccant, the remaining 40% belongs to the solvent. As a rule, white spirit is used as a solvent, but nefras can also be used.

The video in this article contains additional information on the topic.

Conclusion

Regardless of which drying oil you decide to use, all compositions of such a plan belong to the fire hazardous category. Both the containers themselves and the application tool must be in an isolated place, away from electrical wiring or open flames.

Wood is a popular material that is widely used in the manufacture of furniture, structures and other accessories that decorate our home. With all the naturalness and external attractiveness of wooden products, they are quite fastidious and require special protective treatment. Drying oil helps to solve this problem.

Purpose and composition

Drying oil is a thick liquid with effective film-forming properties. This material is made from oils of vegetable origin, and subsequently undergoes additional processing by means of an oxidation reaction or by heating.

Alkyd resins can also be used as a base component. Solvents are added to the composition, as well as a substance that stimulates drying processes - a desiccant.

The scope of drying oil is quite wide. It is used, for example, for the manufacture of oil-type paints or when diluting them, as well as in the production of putty and primer mixtures and varnishes.

In the process of priming and polishing wood, the following is provided:

natural materials

To ensure 100% environmental friendliness in home improvement, it is necessary not only to use natural material - wood, but also safe materials for its processing.

Natural drying oil does not include solvents in its composition, but is made from drying and / or semi-drying vegetable oils by deep processing.

Use of linen

Drying oil can be made from linseed oil with the obligatory addition of a natural desiccant. The result is a clear oily liquid. After application to a workpiece or other wooden surface, the composition dries out after a day. Provided that the temperature regime is observed - at least 20 degrees.

The fluid can be used for:

priming surfaces made of wood, metal or after plaster;
production of putty, paint, putty;
painting various types of surfaces inside the house or outside.

Hemp drying oil

For production, the oil of the same name with a desiccant is used. The liquid is clear and oily. It is particularly effective for priming substrates made of wood, metal, plaster, as well as for the preparation and dilution of putty, putty, paint.

sunflower drying oil

The film obtained after application is very elastic, but it dries out for a long time, having a certain degree of adhesion after 24 hours. It is made from sunflower oils, in terms of strength and moisture resistance it lags behind the previously considered varieties.

Semi-natural drying oil

The composition includes sunflower oil subjected to special heat treatment, volatile solvents such as white spirit, as well as desiccants. The technical characteristics of drying oil oksol make it possible to use it when applying a paint coating in combination with other materials.

Homogeneous transparent or translucent liquid of brown shades ensures the appearance of a durable film on the treated surface. It is distinguished by its gloss, excellent resistance to natural factors and moisture. You can cover the material of any porosity, but such a liquid is not suitable for floors.

Combined drying oil

It is produced by exposing semi-drying or drying oils to polymerization and dehumidification processes. The content of white spirit in the substance is about 30%. The coating dries within a day. The main area of drying oil combined application is the manufacture of paints of a thick type.

Alkyd composition

Drying oil based on alkyd resin of pentaphthalic, glyphthalic, and also xifthalic varieties requires the use of additional solvents or oils, and includes a desiccant.

The material has the form of a solution, which is resistant to temperature fluctuations and atmospheric factors, and is not affected by ultraviolet radiation. After drying, it is necessary to apply paint or varnish in several layers.

Composite drying oil

It does not have high quality, it is the result of oil refining, as well as coal, rubber mass. This liquid has a very dark shade, has a pungent odor. It finds application in the production of paints oriented to outdoor work.

The oil-polymer composition is used for non-responsible painting work, since the surface is covered with a film without absorption into the wood. Processing requires intensive ventilation. Slate drying oil with good resistance to atmospheric factors dries out in a day, but it cannot be used for painting floors and household accessories.

Features of the choice of material

The photo of drying oil shows its various varieties and the results of processing blanks. The durability of the coating and its strength depends on the quality of the composition used. The following points should be taken into account:

High-quality compositions are odorless. But if it is present and sharp, then you are offered an oxol or a combined variety.

Natural drying oil has a dark brown color. If you are sold clear solutions, then there is a high probability that the material is composite or fake. The color palette of drying oil depends on the degree of its naturalness or artificiality.

Pay attention to the packaging and the presence of appropriate markings on it. The label inscription must contain information about the composition, manufacturer, number of the standard and technical conditions.

It is also necessary to check the availability of a certificate of conformity. A composite variety must have a hygienic certificate.

If you are buying a composite material, then beware of the presence of shades that exclude the transparency of the liquid. This is a sign of manufacture from the remains of oils, i.e. fuse. The presence of a red color and sediment indicates that the coating will not dry under any circumstances.

Cheap very liquid drying oil with a light shade is a material from an osprey. Such a film either crumbles quickly or never dries.

Drying oil is a very useful material that provides high-quality coating of wooden structures, protecting them from moisture and pests. But this is achieved only if the selected liquid according to the technical parameters corresponds to the purposes of use.

Drying oil photo

Drying oil (oil) is a film-forming substance that is made on the basis of any natural oil. For example, using rapeseed or soybean, linseed, sunflower and other oils.

What is drying oil for? The main purpose is the processing of wooden surfaces. Also used as a base for oil paints. For quick drying, a desiccant is introduced into its composition. The main task of which is to prevent the surface from changes resulting from external influences.

The product can be easily bought in special stores, but sometimes a large selection makes you wonder which one is better and better? It turns out that you can cook drying oil with your own hands. Most often it is made at home. based on linseed and sunflower oil. It is these two natural ingredients that have been used to make drying oil since ancient times.

Operating principle

If vegetable oils are left in the air, they thicken under the influence of oxygen, heat and light. In a thinner layer, they dry out and turn into a semi-solid mixture. This feature is inherent in oils, which include fatty acids such as linoleic and linolenic. The more acids, the higher the drying property of the oils. The amount of fatty acids in different oils is not the same:

linen - 80%;
hemp - 70%;
sunflower, poppy, walnut - from 30 to 50%;
olive - 40%.

Mineral oils do not contain fatty acids, therefore they do not have the properties of drying out in the open air.

Natural vegetable oils oxidize very slowly, although some are high in linoleic acid. To shorten the drying time of the oil, they are processed and added to the composition of a metal compound - desiccants. Metal salts contribute to faster drying. Thus, depending on the composition, drying oil dries within 6-36 hours after application and forms a hard film on the surface. Most modern solutions dry within a day.

Drying oil: technical characteristics of species

Today, there are several types that differ in composition and scope. Let's consider each type separately.

natural

This variety is referred to as a more environmentally friendly and safe type for human health. The desiccant included in the composition is contained in a small amount, so the drying time will be slightly longer than that of other types. Natural drying oil of light yellow color, without otherworldly impurities in the form of sediment at the bottom of the container.

According to the current GOST, this type must meet the following specifications:

Use natural drying oil when painting wooden frames of various furniture. The composition allows not to carry out further processing of the material with varnish or paint. When impregnated, the tree does not lose its decorative qualities.

Semi-natural (oxol)

The composition includes natural oils, which are contained in smaller quantities. Usually it is 55% of the total volume. Dilute the base with a solvent and standard desiccants. Oksol belongs to a lower price category than others.

Oksol is usually labeled, so in hardware stores You can buy the following brands:

marking B - can be used as an additive to paints and varnishes for outdoor painting;
brand PV - for the preparation of putties;
brand SM - dilute the primer for the treatment of walls and ceilings.

Oxol is not suitable for processing wood flooring, as it will collapse under constant mechanical stress. And also the solvent contained in a large amount, gives a pungent smell to the material. The specific aroma does not disappear for a long time. Finishing is necessary, since the surface treated with oxol quickly wears out and deteriorates.

Combined

This type is obtained by the oxidation of natural oils (semi-drying and drying), for example, linseed, castor, cottonseed. The ratio of solvent to oils is 30:70%.

Combined drying oil is rarely used for finishing work. It is mainly used for the manufacture of paints (oil). Brands of this oil:

K 2, K 4, K 12 - used for interior finishing work;
K 3, K 5 - used for external work, for example, for processing concrete facades, basement parts.

Distribution received marks K3 and K2. The composition of these drying oils includes a solvent, a small part of desiccants and oils. The liquid is clear and has a slight tint. The coating layer dries up within a day. K3 quickly enough creates a dense film. Therefore, to obtain an even coating, you need to work with it quickly.

The combined drying oil is most often used for coating small wood parts. To do this, oil paints are brought to it to the desired consistency. Grade K2 has a darker shade and is intended for processing ceilings and walls.

Synthetic

The main difference from other types is the replacement of vegetable oils with synthetic oils. For this type there are no characteristics according to GOST. All norms of ratios of substances are regulated by TU norms. Usually, such drying oils, which are not according to GOST, are cheap, and, accordingly, the quality is much lower than other types. Protective and water-repellent properties are very low.

Such a coating quickly becomes unusable under external influences. Synthetic oil has a very strong chemical smell, so indoor use is highly undesirable. This oil can cause serious harm to health. It is mainly used for the manufacture of putty and plaster mixtures.

There are two exceptional varieties of synthetic drying oil:

pentaphthalic;
glyptal.

They are produced on the basis of the processing of natural oils and various resins. Paints diluted with this drying oil form a dense and even layer. The strength of the coating is superior to natural and semi-natural drying oils.

Composite

The composition includes natural oxidized oils and gasoline diluted with varnish (rosin). Oil can be either one or several. Basically add rapeseed, corn, cottonseed oil.

Oil-rubber drying oil is the most used in the work. In this species there are two brands, which differ from each other in composition:

K1 based on rubber. It is used for painting works both indoors and outdoors;
MK-2 is used as a primer. They treat the surface before the direct application of paint.

Additional Information

All types of oils can be used to treat wooden surfaces. Particular attention should be paid to the place of application - drying oil for outdoor use or for indoor use.

Consumption

When processing wooden surfaces with drying oil, distinguish the following stages of work:

Paints and enamels are often very thick in consistency, so painting the surface with them can be difficult. In such cases, the paint is diluted with drying oil. It is added until the desired density is obtained. Thus, this method allows you to reduce paint consumption and save money.

The choice of drying oil

When buying drying oil, you need to be careful. Careful attention should be paid on the color of drying oil and packaging. The label must indicate the composition, number of GOST or TU of the product. GOST indicates state-level standards. It is advisable to check the certificate of conformity and hygiene certificate. The place and date of production, instructions for use are necessarily marked on the package.

A high-quality product has no external mechanical damage to the container and does not contain sediment. The smell of the product, the weaker the better.

Drying oil for wood - natural wood protection

It is no secret that wooden surfaces treated with varnish or paint have a significant minus - they become cold and lifeless. If you intend to preserve the beauty of texture, warmth and energy, we recommend that you pay attention to such a wood processing material as drying oil.

Content

Compositions for wood - drying oil is different
Wood processing with natural drying oil - application features
Semi-natural, combined, synthetic - areas of application of drying oils
What is olifing - we impregnate a tree

1 Compounds for wood - drying oil is different

Drying oils are a whole range of film-forming impregnations, which are traditionally based on vegetable oils that have undergone special processing. To improve the quality of oils, they undergo oxidation procedures and heating at high temperatures. Solvents are added to the compositions of drying oils to improve their viscosity - thanks to this, the impregnation can also be used for the preparation of special primers and putties, as well as oil-resin varnishes.

Drying oils can act as an independent protective and decorative coating of wood, or as a primer layer before painting or puttying, as a component for the preparation of paint compositions.

The existing compositions can be divided into the following groups:

2 Wood processing with natural drying oil - application features

Most often, linen, hemp and sunflower drying oils are found on the market. Natural linen drying oil has a light transparent color. It is used for priming wooden, plastered and metal surfaces, as well as in the process of preparing putties for wood, putties and plasters. pastes and for breeding light colors. The use of natural compounds is allowed indoors. How long does natural drying oil dry on a tree? At a temperature of at least 20 ° C - about 24 hours.

Hemp drying oil has a pronounced dark color. The scope of the composition is the same as that of flaxseed. That's just this liquid is used to dilute dark thick paints. Compared to the previous representatives of the group, sunflower impregnation dries out more slowly - after a day, undried liquid will still be felt on the surface. Its feature is high elasticity, however, in terms of hardness, strength and water resistance, it loses to hemp and linseed oil.

Natural compounds are great for treating wooden surfaces of various tools. Hunters love to soak their rifle stocks with them - after that the product is very soft and warm in the hand, it is pleasant to touch it with the cheek. However, this group is not suitable for impregnating floor coverings, since the film created by natural compounds does not have high strength.

3 Semi-natural, combined, synthetic - areas of application of drying oils

Semi-natural drying oils are mostly light brown in color. The resulting film on a wooden surface is distinguished by its hardness and good gloss, as well as sufficiently high water resistance. Basically, semi-natural compositions are used in combination with other paints and varnishes or as a primer. Like natural drying oils, semi-natural ones do not have sufficient strength to process floor coverings.

Manufacturers add modifiers to combined compositions that improve their qualities necessary for the production and dilution of thick paints. Also, combined drying oils are used for priming wooden surfaces before plastering or painting.

Do not forget that the liquid dries for at least a day - it is not recommended to apply a layer of paint or plaster until completely dry.

Synthetic compounds are used not so much for impregnation, but as a basis for diluting dark oil paints for painting outside, as well as for priming metal, concrete and plastered surfaces. Synthetic drying oil is also used for the preparation of various putties and pastes.

4 What is olifing - we impregnate the tree

It should be noted that drying oil is in demand among lovers of natural materials that are absolutely safe for human health. However, in terms of other parameters (strength, penetration depth, durability), compositions based on natural oils have long been losing to impregnations based on alkyd resins with fungicides and other modifiers.

Natural impregnation is most often used in the care of wooden products, which periodically, one way or another, need to be cleaned and polished. For example, it can be carpentry tools. Also, drying oils made from natural oils show themselves well in interior work - treated wooden surfaces look very good, continue to breathe and flavor the air. But for outdoor work it is better to use more modern, resistant to temperature extremes, moisture and pests substances.

How to impregnate a tree with drying oil - a step by step diagram

Step 1: Surface preparation

Wooden surfaces should be degreased, cleaned and thoroughly wiped from dust. The surface must be dry.

Step 2: Application and impregnation

For application, you can use both a brush with long bristles, and a roller, paint sprayer or a cloth made of natural fabric. The main thing is that as much liquid as possible gets on the surface to be treated. Let it soak in and then apply another layer. The procedure can be repeated until the surface is absorbent.

Impregnation of wood with drying oil in one fell swoop is possible using a plastic bag. Take an ordinary bag (the main thing is to make it whole) and pour a little liquid into it. Then place the product there, wrap the bag and seal the edges with tape. For full impregnation, several hours are needed.

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In any repair and finishing work, as a rule, a lot of wood materials are used. To effectively protect the tree from the damaging effects of moisture, fungi and mold, it is impregnated with a layer of drying oil.

Peculiarities

In the days of the USSR, drying oil was practically the only tool that was used to process wooden buildings and individual products. Now the market for materials is much higher, the industry offers a large selection of more modern and practical coatings. However, admirers of drying oil exist to this day.

The use of drying oil can significantly increase the durability of wooden structures, which is especially true for rafters, since they are highly susceptible to water and condensation.

In addition, impregnation with this composition effectively protects the coating from temperature fluctuations, high humidity and destructive atmospheric influences of all types.

When processing wood with drying oil, a film is formed on it, which is hard, but at the same time plastic. It is she who protects the material from external adverse effects, as well as from the appearance of mold and the reproduction of fungus. It is drying oil that will prevent wood decay, and in addition, its use significantly minimizes the consumption of enamels and paint, which can be used as a finishing material. As a rule, drying oil is applied in 2-3 layers, and then only painted with paints.

Another undoubted advantage of the solution is its low price and availability. Mostly, drying oil is taken for interior finishing work, but the use in open space causes only a temporary effect, which requires mandatory coating with paints or varnishing in the future.

Specifications

The mechanism of action of drying oil is based on the physical properties of its constituent components.

If vegetable oil is applied to any surface and left in the fresh air, then under the influence of heat, sunlight and oxygen, it begins to thicken. If the oil is applied in a thin layer, then it dries up and forms a semi-solid composition.. This quality is characteristic of such oils, the main component of which are linolenic and linoleic acids. Moreover, the higher the concentration of these acids, the more pronounced they exhibit the property of hardening.

In oils of different types, the content of these components usually varies. For example, in linseed oil they account for 80%, in hemp - 70%, but in sunflower and nut oil their content is less - from 30 to 45%, well, in olive oil, acids make up 40%.

Mineral-based oils do not contain fatty acids at all, due to which they do not dry out in the air.

However, in its natural form without heat treatment, vegetable oils rarely oxidize, even if fatty acids are present in a significant amount. That's why to stabilize the wood and reduce the drying period, the composition is processed and desiccants are introduced into it- various metal salts, which significantly reduce the setting time of the oil. Thanks to this composition, drying oil after application can dry from 6 to 36 hours, but, as a rule, modern products harden in a day.

The shelf life of drying oil of any type is at least 3 years.

Kinds

Today, drying oils are presented on the market, differing in various compositions and scope of use.

natural

This is a type of coating that is made from environmentally friendly raw materials and is therefore absolutely safe for human health. The desiccant included in the composition has a low percentage, so the curing rate of such a coating is slightly higher than that of other types of drying oil.

The natural product has a yellow color without foreign suspensions and sediments at the bottom of the container.

This product is manufactured in accordance with the requirements of GOST, according to which its technical parameters are established:

the proportion of oil to driers - 97 to 3;
absence of any smell of chemical reagents;
hardening at t 20-22 degrees;

hardening speed - 24 hours;
acidity level - below 5 mg / KOH;
the presence of components containing phosphorus - not more than 0.015%;
material density -0.95gr/m³.

Such drying oil is popular for processing wooden crates and other elements that do not require further painting.

Semi-natural

The main component of such drying oils are oils, the concentration of which is slightly lower in comparison with natural drying oils. As a rule, their share does not exceed 55% of the total volume. Base oils are diluted with desiccants and solvent. Such a product belongs to a lower price group than all other coating options and is most often used as an additive.

By the way, you can find out about its purpose by a special marking:

AT- added to varnishes and paints intended for outdoor use;
PV- used in the preparation of putties;
CM– combines with a primer to improve the quality of wall and ceiling coatings.

The solvent in the composition of the oxoli will give her a sharp unpleasant odor, which, moreover, does not disappear for quite a long time. The surface treated with a semi-natural composition wears out quite quickly, therefore, treated wood without fail needs finishing cladding with paints or enamels.

Combined

This type of drying oil is produced by oxidizing hardening natural oils and introducing a solvent, and the proportion of the latter to oils is approximately 30 to 70. This composition is practically not used for decorative finishing work, it is most widely used in the manufacture of oil paints of the K2 / K4 / K12 type - for internal works, and K3 / K5 - for facade.

The composition is transparent with a slight yellowish tint, the applied layer hardens in 24 hours.

Synthetic

The main difference between this type of drying oil and the rest is the use of a synthetic composition instead of natural oil, and such compositions do not have requirements according to GOST, their standards and standards for the ratio of the main components are regulated by TU.

As a rule, such products have a low price, however, their quality corresponds to the cost - the coating is not hygroscopic and has a very unpleasant odor. It does not make sense to use it for finishing.. Such drying oils have found application in the manufacture of plasters and putty mixtures.

compositional

The main components of such liquids are oxidized oils and gasoline diluted with rosin. Most often they take linseed, cottonseed, and also rapeseed oils. These drying oils suitable for tiling work as a base for enameling and varnishing.

Manufacturers

In Russia, drying oil is made by large paint and varnish enterprises:

"Kotovsky paint and varnish plant"(Tambov Region);
"Perm paint and varnish plant"(Permian);
"Management Company ZLKZ"(Sergiev Posad);

"Ufa Paint and Varnish Plant"(Bashkortostan);
"Azov Paint and Varnish Plant"(Rostov region);
"Bobrovsky Experimental Plant"(Sverdlovsk region).

For many decades, drying oil has been in ever-growing demand among consumers. That is why well-known and large enterprises are engaged in its manufacture.

The following brands are most in demand:

"Tex". This company sells drying oil already prepared for impregnation. It is available for sale in containers from 0.5 to 8 kg. Distinctive features of the products of this brand are a high hardening rate, a significant reduction in paint consumption during the finishing. Such drying oil can be bought as a primer.
"Coachman". Produces an impregnating agent in strict accordance with the requirements of GOST and all SanPiNs. The goods arrive in stores in packaged form, the weight of the container is 0.8-20 kg.

Isolate. It is considered one of the highest quality materials, packaging is made in containers from 0.5 to 200 liters. The disadvantage of this brand is the fact that they produce drying oil only to order and only in wholesale large quantities.
"Vesta-Color". Offers drying oil both wholesale and retail. The impregnation produced by this manufacturer is characterized by exceptional quality and excellent performance properties.
Himtek. Engaged in the production of oxols for over two decades. The product of this brand has a decent quality and an affordable price for the average Russian. It comes to stores in containers of various volumes, so that each consumer can buy a package that meets his scope of work.

Drying oil of the listed brands has been proving its practicality and high quality for many years, which is why when choosing an impregnation, these manufacturers should be preferred.

How to do it yourself?

If you do not have the opportunity to go to a hardware or hardware store, but a lot of vegetable oil has accumulated at home, then it is quite possible to make drying oil with your own hands. Most often, linseed and sunflower oils are used at home.

For home-made impregnation based on linen composition, you will need:

metal container (basin or bucket, pan or ladle);
heat source (gas or electric stove);
rosin;
potassium permanganate;
personal protective equipment (respirator and rubber gloves).

The technology for making drying oil is simple: first, the oil is poured into a vessel and gradually brought to a boil - it occurs at t 110 degrees. At this point, the oil begins to release the water contained in its composition, it begins to evaporate and bubbles form on the surface. Thus, the oil is boiled for about 4 hours. Wherein it is important that the temperature of the liquid does not exceed 160 degrees.

Attention: drying oil is a combustible material of an increased fire hazard class, therefore it is impossible to fill the oil tank to the top - the container should be filled no more than halfway.

At the end of evaporation, a desiccant is introduced into the thickened drying oil in a ratio of 30 g of the substance per liter of oil. At the time of adding this component, strong foaming begins, which can lead to injuries and burns. To prevent this from happening desiccant is introduced gradually in small portions, after which the thermal effect is increased to 200 degrees and the composition continues to cook for another 3-5 hours.

To check the degree of readiness of the solution, you need to place a small drop of "home-grown" drying oil on ordinary glass, and if it is transparent, then the solution can be used.

As the main desiccant, a mixture of rosin with potassium permanganate is used in a ratio of 20 to 1, and first the rosin is brought to melting, and only then permanganate is mixed into it.

Sunflower drying oil also reliably protects wood or plywood, like flax-based liquid, the only difference is in the finish shade - drying oil in sunflower oil will give a lighter tone.

Whatever method of self-preparation of drying oil is chosen, the main principle remains the need to remove all water from the composition of the oil and achieve the oxidation of all kinds of impurities. This can only be achieved by a long heat treatment, so you need to be patient and protective equipment and take care to comply with fire safety rules and good ventilation.

Scope of use

The scope of drying oil is directly related to its varieties and composition.

So, natural solutions are widely used for priming surfaces made of wood and metal, as well as porous plastered coatings. In addition, the material is used for diluting putties, thick paints, lubricating pastes and all kinds of putties. Linen impregnations are often treated with doors and window spans before finishing painting.

Hemp drying oil is only suitable for priming coatings of all types, breeding enamels, paints and making putty.

Drying oil-oksol has physical and technical characteristics, thanks to which its joint use with a wide variety of painting materials is possible. It is noted that oxol films have good density and glossy sheen, as well as resistance to external adverse factors. Such drying oil is deeply absorbed into any treated surface, therefore it is used to protect wood-burning buildings, rafters and ceilings. However, it is not recommended to use it for finishing the floor.

The combined composition is a polymer olive obtained as a result of dehydration of oils with the addition of white spirit (its percentage is 30%), such drying oil has found its application in the manufacture of thick paints.

Alkyd impregnation is formed from resins diluted with chemical solvents and various modified oils. These solutions are more practical and economical than natural ones, since only 300 kg of oil is taken to produce 1 ton of such drying oil. Similar compositions are optimal for wood processing and its protection from the adverse effects of atmospheric factors.

Composite drying oil has a relatively low cost, so the demand for it is consistently high. It is used for effective dilution of enamels during various painting works.. It is not worth taking it for impregnation, since almost the entire film will remain on the surface of the wood. It should be noted that this composition has a rather sharp unpleasant odor, and it is rather problematic to get rid of it from the room. Therefore, all work is best done either outdoors or in an apartment with good ventilation.

Summarizing all of the above, we can conclude that the main areas of use of drying oil can be considered:

priming of plastered surfaces and concrete for painting;
production of putties and mastics;
impregnation of wood products;
putty production;
high-quality preparation of thickly ground paints for work;
dilution of liquid paints and enamels.

Consumption per 1 m²

For surface treatment, drying oil is applied quite abundantly, this allows the wood fibers to soak well. If deep penetration of the composition is required, then the drying oil should be heated to 80-90 degrees.

For to process 1 square meter of surface, you need 130 ml of drying oil. As a rule, this volume is enough for 2-3 layers. However, in some cases there is a need for additional impregnation.

If drying oil is used to dilute the paint, then there is no strict proportion in which the compositions must be diluted - oil is injected until the paint reaches a consistency suitable for work, that is, until the composition acquires the desired degree of density. This method allows you to significantly reduce the consumption of paint and, accordingly, the cost of it without the slightest damage to the quality of painting work.

Application

Let us dwell a little on the technology of using drying oil for wood impregnation.

To begin with, all wooden elements are cleaned of dust, dirt and degreased. To apply a layer of drying oil, use a brush with long bristles, a paint roller, a paint sprayer, or a simple cotton cloth. The most important thing is that as much of the oil composition as possible is applied to the wood coating..

After the drying oil is absorbed, you need to apply another layer and thus repeat the steps until the surface to be treated is unable to absorb it.

Important: sometimes, after using drying oil, a little impregnation remains, as well as the tools with which it was applied. It should be remembered that the impregnation refers to materials with a high class of fire hazard and any fabric that the drying oil gets on is prone to fire. Therefore, they must be stored in a well-protected place away from the source of fire.

Drying time

The hardening time of drying oil directly depends on the type of impregnation and the method of its application:

Small products are hot impregnated in a hot water bath - the processed material is placed in a tank with hot oil for 4-8 hours, and then dried for about 5 days.
If a little red lead is introduced into such drying oil, then the tree will be ready for use much faster - in 2-3 days.
Oil impregnation with the addition of kerosene dries for about 48-72 hours, but compositions based on drying oil, turpentine and paraffin will be ready for use after 2 days.
Drying oil with the inclusion of wax also dries for about 2 days. In rare cases, it may take 3 days for complete impregnation and hardening.

When buying drying oil, it is very important to focus on the following points:

Natural drying oil always has a dark brown color, so if you have a transparent liquid in front of you, then there is a high probability that this is a composite composition or simply a fake.
The bottle should not contain any suspensions and impurities of foreign substances.
Pay special attention to the composition of the proposed product, which is indicated on the label and on the label itself. It must necessarily indicate the manufacturer of drying oil and its coordinates, as well as the GOST or TU used and instructions for use.