Varnish XV-784 - technical characteristics , application features
A varnish such as XB-784 is a perchlorovinyl varnish, which is used to protect concrete, wood, reinforced concrete, metal surfaces from the effects of negative media (alkalis, acids, alcohol solutions and moisture).
It will be based on polymers containing chlorine, which is obtained in the process of chlorination of polyvinylchloride resins to a chlorine concentration of 62 to 65%. In the role of additional elements, plasticizers, dyes and organic solvents are used. Such a material will have an increased level of hardness, resistance to moisture and wear.
In carpentry, wood and plywood are treated with such a varnish composition, even veneer can be attributed here.
Its technical characteristics handle wood of any species, and it is better not to use it as a material for covering skirting boards, railings, doors and platbands.
The varnish composition is used to protect concrete and wooden products, and it can also apply to brickwork, reinforced concrete structures, asbestos-cement products and other mineral bases. XB-784 can be used together with enamel # 785. Such a complex will provide guaranteed protection of the coating from alkaline and acidic compounds, as well as corrosive gases such as sulfur oxide and carbon dioxide. Hydrochloric, sulfuric and phosphoric acids can destroy the integrity of the varnished surface.
As part of the varnish coating in many layers, you can open both the primed surface and the base without preliminary preparation. The mixture can be tinted and protected the wooden surface, and to provide a lighter shade, a colorless composition is used.
This is how it relates to perchlorovinyl varnishes, has a high resistance to mechanical damage, as well as to the effects of atmospheric precipitation. The composition can be used at very low and very high ambient temperatures (we are talking about an amplitude from -30 to +45 degrees).
The varnish has the following advantages:
- Resistance to ultraviolet rays.
- Resistant to prolonged exposure to water without compromising quality characteristics.
- High resistance to wear.
- The surface covered with the varnish composition can be cleaned with synthetic detergents.
- Protection against aggressive environments when used in complex formulations.
- This is a material that dries quickly and therefore the second coat can be applied after a short time.
- If wood is tinted with such a composition, its natural color will be emphasized, and the processed product will look more stylish and elegant.
- There is an incredibly large range of colors, where dark brown and black are the most popular colors, but you can order yellow, gray, ivory and lemon and even white.
And now the stats.
|Drying time at a temperature of +20 degrees to 3 tbsp.||Maximum 1 hour|
| Drying time at a temperature of +20 degrees, up to 5 tbsp. |
|Maximum 1 day|
|Number of non-volatile components by mass||From 14 to 17%|
|Number of non-volatile elements by volume||From 6 to 10%|
|Theoretical flow rate per 1 m 2 , in a single layer||From 200 to 255 k / m 2|
|Recommended layer thickness||From 18 to 23 μm|
|Optimum number of applications||1-2|
|Optimum number of applications XB-784 with enamel # 785||
|TML hardness of the layer (pendulum device)||0. 3 relative units|
|Flexural elasticity of the layer||Maximum 0.1 cm|
|Adhesion||Maximum 2 points|
|Anti-corrosion protection for metal surfaces, resistance to moisture, wear, protection from mold, mildew, radiation resistance, mineral fertilizers, sea water, ultraviolet radiation, detergents, acids, aggressive gases, alkalis, oils and vapors. The composition is not fire retardant.|
Packing and cost
She presents a crash bottle of dark glass. In galvanized cans, you can pour a liter of paint and varnish material, and 20 liters of the mixture is packed in Euro buckets. If bought in steel drums, the volume will be 200 liters. When buying, you can pay attention to the color scheme of the varnish, because not only the composition without color is produced. There are mixtures for bleached blowing, pine, mahogany, walnut, amber, plum and other colors.
Depending on the shade, the cost will range from 125 to 210 rubles per bottle of 0.5 liters.
Certificate of Conformity
Such varnish is made in the Russian Federation according to GOST 7313-3. This will confirm the certificate of conformity issued by the Office of the Federal Service for Rospotrebnadzor. The material has a sanitary and epidemiological conclusion, which the Sanitary and Epidemiological Supervision was able to highlight.
The main purpose will be priming and coating of concrete structures.
If you consider in more detail the technical characteristics of the varnish XB-784, you will find out that before using the varnish, if you should mix it as best as possible, and this is done to eliminate sediment and air bubbles. If the consistency of the composition is not suitable for the viscosity, everything should be diluted. Before applying the composition, carefully prepare the area to be treated.
There are certain recommendations for preliminary preparation of the processing area:
- The remnants of old varnish or paint should be completely removed from the wood.
This is all done with sandpaper, electric sanding tools, solvent, or a combination of similar methods. It is imperative for wood that stains of dust, salt, grease and dirt are removed. Any contamination by the coating will only be emphasized. After cleaning, it is advisable to prime the surface.
- Oil, grease, dust and dirt stains must be removed from reinforced concrete and concrete structures before processing.
Holes, cracks and potholes should be putty and then primed on the surface. To do this, use AK-070 or AK-069.
- Metal products should be cleaned of old paint, polished to a shine, applied with an anti-corrosion solution and primed.
Each of the substrates can be primed in one coat of one varnish. If the varnish will be applied without preliminary priming, it should also be applied in a couple of layers, and for complete protection, after complete drying, open it with enamel.
How to dilute XB-784
Depending on the method of applying the paint and varnish material, a certain degree of viscosity should be ensured:
To dilute such a varnish, you can use a solvent R-4, R-5, xylene or toluene. You can check the viscosity using a VZ-246 viscometer, which has a nozzle diameter of 0.4 cm.
You can apply varnish in several ways:
It should be dipped in varnish, and then applied with a light stroke on the base.It is important to prevent drips, and after the first layer dries, apply the second a little thinner.
For many substrates, a couple of coats of lacquer is sufficient, while mineral, sand and cement-sand surfaces may require three coats. Such a need will be associated with the fact that the composition will quickly be absorbed into building materials.
Varnish XB-784 must be used correctly, therefore, to ensure personal safety, exclude the receipt of other harmful consequences.
In some cases they will be interpreted differently, but the main requirements will be the following:
The general rule of work with various chemical products will be that for a start it is important to familiarize yourself with the features, application procedure, storage conditions.
For paints and varnishes that hit the market, the information is described on the label. For this reason, when buying varnishes, it is required that the container has a good and clean tablet, and you should especially carefully study the properties of the product if you buy it for the first time. If not clear, consult your dealer.
Make sure the paint can is well closed - there are times when the lid opens itself during transport.This is especially true for solvents that are packaged in bottles and glass vials.
When transporting them, they should be laid with cardboard, paper, so that nothing breaks. If you decide to use a nebulizer, be sure to wear a respirator or cotton-and-gauze bandage to protect your respiratory system. And do not forget that the can of varnish should be stored in tightly locked cabinets or drawers, and in this case they will present less danger in relation to fire.
The composition will be stored and transported in the original factory container. The storage temperature should not drop below -20 degrees, but rise no higher than +25 degrees.
The container with the varnish should not be exposed to direct rays of the sun, and should also stand farther from the heating pipes and heating devices. The formulations can be stored for no more than 6 months from the date of manufacture.
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