What is a solvent? Solvent seal what it is.

What is a solvent?

Solvent is a solvent that is produced by evaporation of petroleum products. Today it is produced in two forms:

• “Oil”, GOST 10214-78;
• "Coal" GOST 1928-79.

This class of solvents falls under the number of volatile materials.

The main distinguishing feature of Solvents is a high degree of dissolution of a wide variety of paints and varnishes. Additionally, it can be noted that Solvents, after application to the treatment zone, have the ability to “disappear” very quickly, also taking away all the smells along with them.

What is Solvent used for?

Solvent for paints and varnishes Solvent, both petroleum and stone (Nefras A 130/150) is widely used in construction and automotive industries, when there is a problem with the dilution of alkyds, enamels and other materials to their "working" state. The most common substances for which the solvent is used are: epoxyesters, organosilicon, phenols, polyacrylates, melamine alkides, alkyd-urethanes, alkylo-styrenes and several other less common materials.

How to apply the solvent

In the construction industry, solvent is used to create the necessary viscosity for paints and varnishes. For its proper use, it is necessary to add a little bit of solvent to the material and mix thoroughly until a soft consistency is formed. Sometimes oil solvent is used for degreasing. To do this, all that is needed is to simply wet a rag with an oil solvent and wipe the treatment area.

Safety precautions

Like any solvent liquid, Solvent is a flammable liquid and has a very specific odor. The main rule at the beginning of work with the liquid is the presence of a protective suit, mask, respirator and gloves. The thing is that if this liquid accidentally gets on the skin (not to mention the eyes), it is capable of causing irritation at best, and burns if abused.

Important! Do not forget to ventilate the working room, and even better, carry out all repair work in the open air, as inhaling large amounts of solvent vapor is extremely hazardous to health.

If it so happened that Solvent accidentally came to your skin area, it should be washed immediately in warm soapy water. As for the possible ignition of the liquid, if this happened - it should be extinguished exclusively with the help of fire foam, sand or carbon dioxide, in no case use water to extinguish.

Characteristics of solvents

Solvent Coal

• Scope of use: this solvent is designed for use in cases where it is necessary to dissolve or dilute paints and varnishes such as varnishes, paints, enamels, washing liquids in the automotive industry, etc.
• Composition: aromatic hydrocarbons that are obtained during the processing and purification of fractional crude benzene and pyrolysis resin.
• Color palette: exists only in a faint yellow color or in a completely transparent state.
• Quality mark: density at 20 degrees Celsius, kilogram per cubic meter, should not be less than 864; "Volatilization" on xylene, should not be more than 1.2; mass fraction of sulfur, in percent, does not exceed - 0.005; mass fraction of phenols, in percent, less than 0.0022; water extract reaction is neutral; the minimum necessary temperature for boiling is 125 degrees Celsius.
• Packing: barrels with a volume of 220l (185 kilograms).
• Manufacturers: both domestic and foreign.
• Recommended shelf life: 1 year from date of manufacture.

Important! After drying, this solvent leaves a pleasant shine on the paint. When working with this solvent, always wear a mask and gloves, make the work area ventilated and do not allow the solvent to get into your eyes.

Solvent Oil

• Scope of use: this chemical material is used in cases where it is necessary to dissolve substances based on oil, bitumen, rubber, oligomer, petroleum resins, polyether amide and polyetherimide. Additionally, for melamine-alkyd lacquer materials and printing.
• Composition: aroma-hydrocarbons with a low proportion of naphthene, cyclic hydrocarbon paraffin.
• Color palette: exists only in a fully transparent state.
• Quality mark: density at 20 degrees Celsius, grams per cubic meter, should not be less than 0.861; xylene volatility should not exceed - 1.21; mass fraction of sulfur, in percent, should not exceed - 0,021; the mass fraction of sulfonated materials, in percent, should not be less - 98.9; water extract reaction is neutral; the minimum necessary temperature for boiling is 150 degrees Celsius.
• Packing: barrels of 9 liters (8 kg), as well as canisters of 218 liters (172 kilograms).
• Manufacturers: domestic and foreign.
• Recommended shelf life: 1 year from production dates.

What to choose solvent or white spirit

Let’s first understand what the phrase “White Spirit” means? It's no secret that in the literal translation from English we get the phrase “white spirit” (where spirit means spirit and white means white, transparent)

If you connect a fantasy, then you can come to some strange spiritual transformations. But everything is much more commonplace.

White Spirit and Solvent, both chemicals obtained during the distillation of oil. Under the influence of high temperature conditions, oil overheats and forms a pair of various hydrocarbons. The resulting pairs are divided into classes, which differ in their temperature boiling range. It is because of the different boiling points that various chemicals are obtained.

As for the boiling point itself - it means that at a certain temperature, particles of oil evaporation begin to convert to a solvent. Actually, this is the fundamental difference between White-spirit and Solvent, since “spirit” begins to form at a lower temperature than the second class of solvents.

For clarity, we give an example for such an individual substance as water. It will boil at a temperature of 100 degrees Celsius, the bottom line is that only under this condition will it begin to evaporate. But the difference between solvents and water is that water is a homogeneous substance, and solvents are a kind of mixture of different components. From this it logically turns out that all their components will also have different boiling points, which, accordingly, forces two different solvents to form separately from each other.

Concluding, we can say that Solvent, as a mixture of simpler components, begins to transition from a liquid to a gaseous state at relatively low temperatures, which means it dries faster. It is this quality of the solvent that gives it an advantage over quick-drying paints and varnishes, and due to the low content of the oil substance (which is retained during the formation of the solvent), it makes the surface to be glossy.

Now, regarding the "White-spirit." Its drying time is longer. its boiling point is 200 degrees Celsius. During production, it retains a greater amount of oil components than in Solvent. This quality makes it unique when creating a matte shade on the treated surface. We can say that the white spirit solvent is more rational to use only for metal surfaces, where it is necessary to thoroughly clean the surface.

For comparison, drop one drop of two solvents onto a piece of paper, and you will certainly see which is better. But it all boils down not to “who is cooler”, but to what purpose you need a solvent for. If you need fast drying ability along with a glossy shade, then Solvent is the right choice, but if you want to create an additional layer of protection and dullness for the surface, then the use of White Spirit is undeniable here. The main thing is to decide on the goals for which you need a solvent.

Consider   solvent seal what is it.
Solvent printing is a sustainable way of applying the image to the surface of the material by dissolving the upper layer with ink. Most often, printing with solvent ink is used in the manufacture of banners, posters, stickers on large format billboards.

Such an advertising medium will last a very long time, since the paint will not wash off in the rain, will not fade in the sun, and will not dry out. In fact, solvent printing will make the image part of the medium. This technology is an excellent solution for outdoor advertising, interior work and decor.

  The guaranteed service life of products made by solvent printing is 3 years. And this is subject to harsh winters and heavy rains. In fact, the picture can hold even 5 years or more.

Application of solvent printing

Printing with solvent inks makes it possible to achieve high image quality, making it clear. The picture will look great both close and far. Any materials suitable for printing: self-adhesive film, banner or flag fabric, building mesh, backlit, solvent printing paper   etc.

The finished image on the film can be transferred to metal, glass, plastic, wood. As for banner fabric, it is used on billboards, firewalls. Backlites are new items in the advertising business, which are colorful signs.

Thus, the main use of solvent printing is the manufacture of outdoor advertising products. It can also be city lights, banners, arches, roof installations, advertising on vehicles and window dressing. A potential buyer will always pay attention to a clear, vivid picture.

Pluses of solvent printing:

• affordable price;
• solvent ink   resistant to sunlight;
• not washed off;
• does not crack and does not crumble;

Solvent printing technology

The technology of solvent printing at the initial stage is no different from inkjet. Drops of dye are obtained in the same manner. Well, the application of the image involves the dissolution of the structure of the surface of the material and penetration deep into.

This is followed by drying until the smell disappears completely. Mandatory is the consolidation of the result. The material on which the drawing is applied must have a PVC layer or other readily soluble surface, otherwise the substance will not be able to enter into the reaction. The image does not require lamination, which reduces the cost of printing.

The equipment used is widescreen.   It should be distinguished by the ability to adjust the print head and have a good pulling mechanism. This makes it possible to increase the accuracy and image quality. There will be no stripes or blurry lines in the picture. In rare cases, continuous ink printers are used for large format solvent printing.

Benefits of Solvent Printing

• high quality and visual sensitivity;
• affordable price;
• resistance to sunshine;
• not washed off;
• does not crack and does not crumble;
• penetrates deep into the texture of the material;
• suitable for all types of advertising printing.

Features of solvent printing

The solvents themselves are a mixture of aromatic hydrocarbons, characterized by a low content of naphthenes, with paraffins and unsaturated cyclic hydrocarbons, which are added to the ink to lower the viscosity.

The solvent dissolves the pigment in the ink, as a result of which it becomes possible to transfer a larger volume of dye. In addition, the drying process is regulated, and the durability of the paint increases.

Unfortunately, solvents are not safe substances.   But you can protect yourself from exposure if you observe the precautions in the printing process. The room must be equipped with a powerful exhaust hood. All fumes during the drying of the paint should be weathered, and the master is better to work in a respirator. Therefore, it is better to immediately purchase high-quality equipment or seek the help of specialists.