Types of nitro paints and what it is, the best brands and rules of application
Of the original nitro paint, invented in the 1920s, only the name remains. The composition of the nitrocellulose paint and varnish material has changed qualitatively. Alkyd resins, additives that give paint materials the best characteristics, have been introduced into modern nitro enamels. The main feature of nitro paint is considered to be its ability to dry quickly and, after polishing, to acquire a mirror shine.
Peculiarities of the composition
Nitro paints are made on the basis of nitrocellulose, modified alkyd resins and other additives. These paints and varnishes are marked with the letters "NTs". Manufacturers of paint and varnish materials produce various nitrocellulose paints, enamels, varnishes. The main characteristic of this type of product is that the coating dries quickly after painting.
Areas of application of nitro paints
Nitrocellulose paint materials are used for painting:
- wooden boards, products, flooring;
- Particle board, MDF;
- furniture front;
- metal products, appliances;
- stair railings;
- sheet metal;
- polystyrene;
- concrete surfaces;
- plastered walls;
- internal parts, bodywork;
- retro car restoration;
- objects on the construction site (for marking).
Varieties and specifications
On sale you can find several types of paint materials based on cellulose ethers. The most popular are NTs-132 and NTs-25. These enamels are available in dozens of colors. They are used to paint wood and metal surfaces, mainly indoors. Dry in 1-3 hours at room temperature. 645, 646 and other solvents are used to dilute them.
After drying, they form a thin film on the surface. They are applied in several layers (from 2 to 5 and 10). Manufacturers even produce NTs-132 nitro enamels separately for application with a spray gun (marked with the letter "P") and a brush (with the letter "K").
These nitro paints, more resistant to moisture and atmospheric factors: NTs-11, NTs-5123. Enamels are used to paint metal and wood surfaces, used outdoors or indoors. After applying the nitro paint, the coating dries in 1 to 2 hours. Viscosity reduction is achieved with solvents 646, 647 and others. Nitro enamel is applied to the surface in 1-5 or more layers. After painting, the surface does not change its appearance for 3 years and can be used at temperatures from -40 to +60 degrees Celsius.
The main types of nitro paints sold in construction supermarkets:
- nitro spray enamel (in cans);
- nitrocellulose enamel (in boxes).
All nitro paints are one-component and completely ready to use. All nitro enamel contains solvents which evaporate when the paint dries. It is recommended to work with this type of enamels at positive temperatures and humidity not exceeding 70 percent.
Enamel Selection Criteria
Buy nitro paint if you want to create a mirror finish. These enamels can be used to paint antique furniture, parquet, MDF and chipboard furniture panels.Quick-drying nitro enamel a few hours after painting makes it possible to evaluate the result. Indoors, use NTs-25 and NTs-132. True, in the first month after applying the paint, it is not recommended to sleep in the room where the painting took place. When dry, nitro enamel releases toxic substances into the air.
To paint the metal parts of the body, special aerosol nitro paints are purchased. They apply with a simple spray and dry instantly. On sale you can find car sprays of different colors (red, black, yellow and others). The spray can create a smooth, shiny finish.
For painting garage doors, metal entrance doors, NTs-11, NTs-5123 are used. Such nitro enamels adapt well to the surface treated with soil. Over time, siding used on the exterior can yellow and crack. Every three years, the appearance of metal products must be updated. If exposed to direct sunlight for a long time, the paint may fade.
Review of the best brands and manufacturers
Popular brands of NC enamels:
- "Lacra" (for painting inside and outside);
- Ceresit (for interior and exterior painting);
- Hammerite (automatic sprays);
- Roshal (popular - NTs-132);
- BELCOLOR (NTs-132);
- SibLKZ (NTs-132);
- "Master" (NTs-132).
Rules and features of the application
Nitro paint is used to paint mainly wood and metal surfaces. To paint wood or metal, purchase an appropriate type of nitro enamel. Painting is carried out on a dry and perfectly flat, but slightly rough surface. Nitro enamel is applied in several layers, observing the drying interval.
It is forbidden to paint wet and unprepared objects. Nitro paint cannot be applied over an oil, acrylic or alkyd base. It is recommended that unsuitable coatings be cleaned before using nitrocellulose enamel.
By the wood
Painting wood or objects can be done with a brush or a spray gun. Mix the nitro enamel well before painting. To dilute a composition that is too thick, use the solvents recommended in the instructions.
The main stages of painting wood with NC enamel:
- clean the wood from dirt, old coat of paint;
- sealant from defects;
- degrease the base;
- grinding with fine-grained sandpaper;
- ground treatment for wood (GF-021, GF-032, FL-03k);
- painting (vertical or horizontal movements, up and down).
Products, objects or objects made of wood are painted in several layers. Usually 2-5. After applying the first coat, it is recommended to wait 1-3 hours for the paint to dry. Do not paint a wet or non-dry base. You can walk on the nitro-enamel painted floor after 3 days.
For metal
It is recommended to use a spray gun to apply nitro paint to a metal surface. Spraying the enamel creates a perfectly smooth, drip-free finish. For painting metal there is a type of nitro enamel with anti-corrosion additives. You can use NTs-132, NTs-11, NTs-25, NTs-5123.
The main stages of painting metal with nitro paint:
- preparation of metal for painting;
- cleaning of dirt, dust, rust;
- sealant from defects;
- remove greasy stains with white spirit;
- metal grinding with fine-grain emery paper;
- treatment with metal primer (GF-031, FL-086, PF-033);
- paint a perfectly dry base in 2 to 5 coats.
After applying the first coat, you need to wait 1-3 hours for the enamel to dry. Then apply a second, and if necessary, then a few more times to walk on the metal surface with paint. You can use the painted object in a few days.
How to store it properly
Nitro enamels should be stored in a tightly closed industrial container or box. For the storage of nitrocellulose paint, it is recommended to use a closed room protected from wind, frost, sun, moisture penetration. Freezing nitro paint is not recommended. The enamel of the box is a flammable substance. It is necessary to keep nitro paint away from an open source of fire, sockets and electrical appliances included.