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Painting works. Materials (a part 2)

Varnishes are solutions of pitches in the prepared vegetable oils, in organic flying solvents with sikkativami, softeners, spirtorastvorimymi pigments or without them. Varnishes, as well as oil paints, put brushes or kraskoraspyliteljami, working from the compressed air submitted compressors. After drawing and drying they form a smooth, strong, brilliant or matte surface. Varnishes happen oil and spirit, colourless and painted in various colours. One varnishes apply to external works, others - for internal. Spirit varnishes apply only to internal works in dry premises.

To cultivation of varnishes to working density apply turpentine, solvent coal and other solvents.

Varnishes ГФ-166 and ПФ-283 are applied to a covering of the wooden oil paints wooden and metal surfaces, outside and in premises. Them put a brush or kraskoraspylitelem.

Pentaftalevye varnishes № 170 and 171 are weatherproof varnishes for a covering of surfaces from aluminium and its alloys. Put a brush, kraskoraspylitelem or okunaniem.

the Coal varnish is applied as an anticorrosive covering of pig-iron and steel surfaces (water and sewer pipes). Put a brush, kraskoraspylitelem, okunaniem.

Varnish ХВ-784 is applied to a covering on enamel first coats of steel, concrete and ferro-concrete designs and the various equipment. Put kraskoraspylitelem.

Varnish ЭП-730 represents a solution epoksidnoj pitches in a mix of organic solvents. Apply to coverings of various surfaces in premises.

Spirit varnishes prepare from natural pitches and polymers in ethyl spirit. Depending on appointment they possess various properties.

Nitrovarnishes happen colourless and painted, with term of drying within 30 minutes Them apply to a covering of wooden and metal products; put dispersion.

To Work with the considered varnishes follows cautiously, as all of them pozharoopasny (especially pozharoopasny nitrovarnishes). To smoke in an operating time it is forbidden.

Thinners and solvents apply to finishing to working density of various painting structures, tool washing etc. The structure of thinners, unlike solvents, includes a small amount of film-forming substances.

Sikkativy apply to acceleration of drying of oils, oil paints, drying oils and varnishes. Them add from 15 to 150 g on 1 kg of the taken materials. Surplus sikkativa accelerates drying, but the film becomes more fragile. (It is desirable sikkativy not to add at all.) light sikkativy enter into light paints, dark - in dark.

Turpentine - colourless or with a lemon, reddish, red-brown shade a liquid possessing a smell of pine pitch. It add for razbavlenija oil paints and acceleration of their drying. The cleared turpentine accelerates drying of the oil paints, badly cleared, on the contrary, slows down a little. It is inflammable.

Gasoline-solvent - a colourless liquid with a characteristic smell of kerosene. This toxic inexpensive material is applied to cultivation gustotertyh the oil paints, the thickened varnishes, for preparation of artificial drying oils and the painting structures forming a matte surface, and also for tool washing.

Kerosene has the oily impurity detaining drying of oil paints. It is applied to washing of the tool, hands, but only not for cultivation of oil paints.

Acetone - the best solvent for nitrovarnishes, it letuch also is inflammable.

Coal ksilol - the colourless transparent liquid applied as solvent by manufacture of varnishes, paints, enamels; serves as a thinner for bitumen varnishes and a kuzbass-varnish. pozharoopasen, it is toxic. To work with it follows in a respirator.

Technical etiltsellozolv - the transparent liquid, easily ignites; it is applied to dissolution of varnishes, paints, enamels, etc.

Automobile gasoline is explosive and toxic. It is applied to cultivation oil, enamel and bitumosoderzhashchih paints and varnishes. coal solvent - solvent of high activity, is toxic. It is colourless, transparent (sometimes slightly yellowish) a liquid used for cultivation of enamels - bitumen, gliftalevyh and pentaftalevyh.

Technical butilatsetat - the colourless transparent liquid applied to dissolution of nitropaints and enamels.

Solvents № 645, 646, 648 are colourless or slightly yellowish transparent liquids with a caustic strong smell, toxic, easily flammable. Are applied:

  • № 645 - for razbavlenija nitroenamels, perhlorvinilovyh enamels, the nitrovarnishes special nitroshpatlevok, first coats;
  • № 646 - for razbavlenija nitroenamels, shpatlevok a general purpose, epoksidnyh enamels;
  • № 648 - for smoothing (spraying) of scratches after grinding of a nitrovarnish film.

Solvents Р-4, Р-5, Р-12, Р-24 - transparent yellowish liquids, toxic, easily flammable; are applied for razbavlenija perhlorvinilovyh enamels.

Thinners and solvents should be stored in tight ware, in a place inaccessible to children.

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