Composition and characteristics of silver paints, non-stick forms and method of application
Silver paints are used for painting concrete, plaster, metal, ceramic, stone and wood surfaces. They consist of the finest powder (aluminum or zinc) and varnish. Diluted with solvent. After applying to the surface, a decorative silver coating is created. Protect the painted surface from moisture penetration, maintain its original appearance for a long time.
Composition and characteristics of paint
Serebryanka is a paint and varnish material based on finely dispersed metal powder, in which there is not a single gram of silver. Aluminum or zinc powder is mixed with varnish and a silver dye (suspension) is obtained. The proportions of the components: 10-20 percent powder and 80-90 percent resin.
Serebryanka is sold in the form of a ready-to-use composition. Depending on the type of varnish that was used for manufacturing, it is acrylic, bitumen, alkyd, organosilicon. It is the resins used in the composition of this paint which are the film-forming substance. Serebryanka are two-component (powder + varnish) or multi-component (varnish + powder + fillers + additives).To give the paint materials the required viscosity, use the type of solvent recommended by the manufacturer (solvent, xylene, P648, white spirit).
Money, if you want, you can do it yourself. To prepare the suspension, you need to mix aluminum powder with varnish (bitumen) or synthetic drying oil. The powder used in silver is nothing more than finely ground aluminum.
The main characteristics of silverfish:
- creates a decorative silver coating;
- forms a smooth protective film on the surface;
- has reflective ability, protects the surface from heating;
- protects the painted object from moisture, adverse weather conditions;
- the coating does not crack over time, does not peel off;
- lays down in an even layer during the painting process, does not create spots, streaks;
- the coating prevents the development of corrosion;
- the hardened layer has a long protection time (15 years indoors, 7 years outdoors, 3 years in water).
The performance of silverware depends on the varnish used to make the suspension. The mixture is applied to the surface with a brush, roller, paint sprayer. Forms of production of ready-made silver products: cans, glass bottles, spray cans. The most popular paint is BT-177 (weather resistant, heat resistant).
Apps
Different types of silverware are used for painting:
- metal, various metal elements, structures, fences, fences;
- objects, elements of wood, plastic, ceramics;
- concrete objects, plastered surface;
- walls, window sills, roofs, columns, doors;
- heaters, units, batteries, heaters;
- picture frames, interior items, furnishing items;
- drainage pipes, drainage pipes;
- garage doors, fence;
- underwater hulls of floating installations.
Advantages and disadvantages
Forms of issue
There are two main types of silverware: heat resistant (heat resistant) and classic. The properties of the suspension depend on the type of varnish used in the manufacture of paint and varnish.
heat resistant
In the manufacture of heat-resistant silver, aluminum powder PAP-1 and heat-resistant varnish (bituminous BT-577 or BT-5100) are used. Recommended proportion: 1 or 2 parts powder and 5 parts resin. The suspension is used for painting metal objects and objects that heat up during operation. The coating can withstand heating up to 405 degrees Celsius. It is used for painting boilers, radiators, batteries.
Classic
In the manufacture of a classic suspension, non-thermal varnish (acrylic, alkyd) or synthetic varnish is used. Proportions: 1 part PAP-2 powder and 3 or 4 parts resin or drying oil.
Such a suspension is used for painting wooden, ceramic, metal, plastic and plaster surfaces.
Types of varnish used to make the slip and type of surface to be painted:
- bituminous - for objects in the open air or in water (metal, concrete, stone);
- acrylic - for wood, plastic, ceramics;
- organosilicon - for cables, wires, electrical appliances;
- alkyd - for metal fences, walls, ceramics;
- on synthetic linseed oil - for wood and plastic products.
How to cook with your own hands
You can make a silver coin yourself. First of all, you need to decide on the type of paint (heat-resistant or ordinary). For surfaces exposed to heat during operation, aluminum powder PAP-1 is suitable. For classic coloring, they buy PAP-2 powder. The correct varnish and thinning rates are usually given on the manufacturer's instructions or on the label. It is not permitted to alter the component ratio recommended by the factory.
Silverware preparation technology from PAP-1 powder and bitumen varnish:
- measure the required amount of powder;
- poured into a metal container;
- add the varnish specified in the instructions (a small amount);
- mix well (for 10-25 minutes);
- the remaining varnish is added to the resulting mixture;
- too thick a suspension is further diluted with solvent.
The prepared mixture is applied to the surface using a brush, roller or spray gun. When using a spray, the suspension is made more fluid. To give the mixture a liquid consistency, the powder is diluted not with bitumen, but with acrylic or other water-based varnishes. It is forbidden to mix the powder in nitro enamels, alkyd and oil paints. It is recommended to prepare the solution in a respirator, goggles and rubber gloves.
At home, for the preparation of silver, usually bitumen varnish BT-577 and PAP-1 powder or synthetic drying oil (thermopolymer) and PAP-2 powder are used. Suspension consumption (on average) - 100-150 grams per 1 m². metre.
Coloring technique
It is recommended to prepare the surface before painting. The base is cleaned of dust, dirt, old crumbling paint, rust. A flat, smooth surface is degreased with acetone or solvent. After drying, it is recommended to grind the substrate with fine-grain emery paper (P220). After grinding, the object to be painted is treated with a primer, then they wait at least 16-24 hours for moisture evaporates. The primer is selected depending on the type of substrate (for wood, metal, concrete) and type of varnish (acrylic primer - for acrylic paint, alkyd - for alkyd).
After the primer has dried, the silver can be applied in 1-3 coats. The paint hardens quickly, but dries completely, depending on the type of varnish, in 4 to 24 hours. After applying the first coat and each subsequent coat, allow the interval necessary for the paint to dry. It is forbidden to paint with silver surfaces painted with nitro, oil, alkyd, NBH paints. It is recommended to completely remove these coatings beforehand.
Silver staining technology:
- the surface is cleaned of the old coating, rust;
- wipe the base with acetone or solvent;
- after drying, the surface is sanded with fine-grain emery paper;
- treat the surface with a primer;
- after the primer dries (after 16-24 hours), the first layer of silver is applied;
- wait 6-8 hours for the paint to dry, after which a second layer is applied;
- during the entire drying period (16-24 hours), the silverware protects the painted surface from dust and moisture;
- after a month, the coating can be painted with polyester resin (to give shine and hardness).
Silver can be used to paint the surface even without a primer. The main thing is that the base is clean, rough and dry. Once the silver has dried, the surface can be varnished with the varnish that was used to prepare the suspension. True, it is better to varnish a month after painting.
how to wash silver
It is recommended to wipe fresh silver stains with a sponge and soapy water or a cloth soaked in vegetable oil (sunflower). Drops of hardened paint can only be removed with the solvent that was previously used to dilute the suspension. Silver stains can be wiped off with acetone or regular nail polish remover (non-acetone).
If the paint drops cannot be removed, it is recommended to apply oil or solvent, acetone, nail polish remover to it with a brush (sponge) and wait for a few minutes, then wipe with a dry cloth. To avoid stain removal problems, before carrying out repairs, it is advisable to cover the surface where the painting will take place with plastic wrap.