Features of varnish for plastic (polymer coatings)

Varnish for polymer coating (plastic) - properties of the product

Plastic doors and windows are usually painted under the color of the interior, and sometimes the coating with varnish or paint, makes PVC communications less visible.

Protect plastic surfaces from destruction and burnout by painting. The material has this feature - from destruction and burnout.

For this reason, it is worth knowing which varnish for plastic is best suited, and which paint will interact 100% with the surface.

Features of the interaction of plastic and varnish

The adhesion of the paint and varnish material to the base made of plastic is a quality that is worth paying attention to.

Polyvinyl chloride is characterized by a dense and hard structure, and also a slippery surface. Such surface properties will reduce paint adhesion.

In addition, a PVC paint is required that has the following specifications:

• Resistant to moisture.
• Coating strength indicators.
• Resistance to various mechanical damages.

• Tolerance to direct sunlight.
• Color stability.
• The harmlessness of the composition, as well as components harmful to health, which are not released after drying.
• Resistance to temperature changes.
• Long operational life.

• Color assortment and the ability to create different textures on plastic.

Most often, the coloring of polyvinyl chloride is carried out independently at home, and therefore an easy-to-use paint is required.

Details

Composition of polyurethane-acrylic varnish

A polyurethane-acrylic composition based on water for painting polyvinyl chloride has all the characteristics that are listed above and are required. The manufacturer offers PaliPlast RР 2040 basе for use. This is a semi-matt acrylic for the base composition of PVC in white, which in the future can be tinted in the required color during work.

The result of the work will be a homogeneous coating that does not undergo deformation. The paintwork material dries quickly.

Special additives are usually added to the composition, which makes it possible to create different texture coatings. You can add pigments yourself and get the desired shade. The color should be selected from the manufacturer's proposed 2,000 shades.

You can also find traditional methods of design in color and unusual solutions - glitter is sometimes added to the composition, and also a metallic color is chosen, a pearl-colored coating is applied. Such coloring of profile PVC helps to add uniqueness and originality to the building or even its facade.

The coating can last at least 10 years under load every day, and since the paint and varnish material is not toxic, it will even be in a room with a terrible ventilation system. The composition of the polyurethane-acrylic type will create molecular adhesion on the plastic, which will make it possible not to remove the gloss from the painted surface, but to apply a new material on top. It is important that the coating will be of the same quality, wherever the PVC is painted - in the house or in the production workshop.

Steps of surface preparation for applying paintwork materials

Varnish for polymer coating should be applied correctly. Whatever you paint - doors, windowsill or windows, any plastic surface should be prepared in advance.

Preparation work should be done in stages:

1. With a plastic structure, you should remove objects that will be attached to it and will interfere with painting. These are mosquito nets, blinds, ebb and curtains.
2. Use compressed air to remove dust from plastic.

3. The surface should be thoroughly cleaned of grease stains and mechanical impurities.
4. Construction-type adhesive tape is required to cover rubber seals on the surface of windows, various accessories, so that they do not accidentally get paint and varnish composition.
5. Cover the glass with plastic wrap or newspaper.
6. At the stage of cleaning and degreasing the plastic surface, it is worth using special cleaners-activators, which are required for plastic. Before painting the PVC, it should be wiped with a cloth dampened with cleaner.

   After that, at least 5 minutes, and no more than 10 minutes, you should wait for the surface to dry and the composition that is applied to evaporate. Then you can start painting the polyvinyl chloride.

7. If the plastic surface is scratched, has roughness, irregularities, then all defects will be removed by means of putty. The surface must be putty, sanded with fine-grained sandpaper and primed. All work is not complicated and you can do everything yourself, but if you are not sure, then the best option would be to contact the masters.

Now a little about the coloring method.

Method of painting PVC surfaces

Dyes for PVC should be applied to the surface using a spray gun. Pre-paint polyurethane-acrylic material should be completely prepared 0 add pigment and mix until a homogeneous composition is formed. Tinting is carried out before the start of coloring, and within two hours the viability of the dye is confirmed after mixing with hardeners.

Then fill the spray gun with it and pass it through a funnel-shaped filter.

When a factory container with materials is opened, there can often be a film on its surface.It must be removed and not mixed with dyes. The composition of the film type has solid particles of an insoluble type and if you do not remove them, the spray gun will constantly clog.

In consistency, the paint and varnish material will resemble thick sour cream, and everything should be diluted with water (add no more than 10%). The viscosity should be checked with a VZ-6 device, and the recommended viscosity level is 30 s.

Good advice! If the acrylic-polyurethane material had time to freeze during storage, then after it thaws, all technological characteristics will be lost. For this reason, it will not be suitable for further use.

Work should be carried out in warm, dry weather. The thermometer should be at least +6 degrees, and the air humidity should be no more than 80%. High air temperatures are unacceptable.

The thickness of the coating material should be from 80 to 120 microns. After application, the dye will not drain from the vertical surface, it adheres perfectly.

Usually one coat is enough, but if necessary, you can repeat the staining. The second layer is applied at the moment when the previous one has become semi-matte. If the air temperature is about +10 degrees, then it is enough to wait a 1/3 hour break between applying layers.

After 2.5 hours the coating will become dense, and after two days the material will completely dry out.

In special industrial workshops, plastic products will be dried at a temperature of +55 degrees. This technology is called forced drying, and the paint dries completely in 2 hours.

Metallic coating technology

The metallic effect on the plastic surface is achieved in the following ways:

• The process will proceed with the application of two layers - the first (paint with "metallic" effect with a thickness of 60 to 80 microns), but the second colorless for polyvinyl chloride with a thickness of 60 to 80 microns.

  Between applying layers it is worth waiting for the drying time to about 3.5 hours.

• We apply one layer, and you should first prepare a metallic paint, and 20% of a transparent varnish composition should be added to its composition, and the plastic will be covered with a material with a thickness of 60 to 80 microns.

A little about spray cans

Paints and varnishes in aerosol cans

A small plastic object can be painted with paint and varnish in aerosol can. Since the ingress of air into the container is completely excluded, there can be no film either.

Advantages of using spray paint:

• High adhesion with plastic.
• Easy to apply dye to all hard-to-reach areas.
• Small parts will be evenly coated.
• No additional painting tools required.
• The can can be easily delivered to any distance.

This method of painting is often used for PVC surfaces in the car interior, but it still takes experience to get a uniform and even coating, and also spread over the entire area. Preliminary workouts won't hurt.

Additional protection

Acrylic varnish for plastic has excellent adhesion to PVC. But the service life of the coating can be increased if it is additionally protected with a glossy type of water-based plastic varnish. What's more, the product will get beautiful appearance and shine.

Such additional protection will be relevant for windows and window sills in the kitchen.

The impact of negative factors will also decrease. The protective layer should be applied with a brush, and there will be no difficulties in work, and therefore the varnish can be applied with your own hands. If the plastic pipe or window sill is located close to the fire source, then they should be covered with fire retardant paint and varnish material. These are special compounds that are required for coloring metals.

Details for dyeing plastic

Before dyeing PVC products, calculate the required amount of dye. When measuring the area of ​​the proposed painting, you can calculate the consumption of the varnish composition. You will also need to look at the data on consumption at the bank, and the sales assistant will help you calculate how much paint you should buy.

Despite the high cost, polyurethane-acrylic varnish is economically viable. Since only one layer of application of the product is enough, the material consumption will be small, and the coating will become durable, and thus, the expenses over the years of service will be justified.

The coating can last a long time if the dye is applied in compliance with the technology. Polyurethane-acrylic compounds are environmentally friendly, do not contain hazardous components for health. For this reason, they can be used in children's rooms, catering buildings and hospitals.