Oil paints painted on a wooden surface or rough cotton canvas, coated with acrylic primer. An additional layer between the main picture and colours needed to make the oil of the paint ahead of time is not absorbed in the painting - so the painting will be more durable and bright. If too rapid drying of an oil paint will adversely affect the quality of the picture, expect a long drying time is inconvenient, because the oil varnish for fixing and save a picture. How to calculate auspicious time for drying of oil paint?
The drying time of oil paint depends on the basis on which the mixed dye. It is known that paints with different pigments are often mixed with the linseed oil, while the white or transparent paints contain poppy seed oil. It is more transparent, but dries much longer than flax. In modern oil paints add driers – a special substance that accelerates the drying process. Add to the paint a bit drier and varnish to the picture dry faster.
The finished painting, keep in a warm Sunny place to dry completely, however do not expose it to direct sunlight or heat: oil can just leak. For this reason, do not use hot air gun - paint or flow, or dry and will crack, that will spoil the picture. You can only slightly dry of oil paint, giving them a stream of cold air from a hair dryer. Be careful. A small volume of painting you can try to dry it in the oven or microwave. The paint slightly will change its color, and the picture becomes similar to antique.
If the paint dries properly, first its surface is covered with a protective film made from linseed oil. This process takes about a week. Drying deep layers of paint takes from several months to several years. As a rule, varnish an oil painting cover one year after completion of work.
Advice 2: How to quickly dry the paint
When carrying out repairs in the apartment, people can not do without the paint work. And any paint even the best quality have a smell that you want to quickly get rid of, especially if you have a lot of time in the room. It is necessary to dry the ink, which is very difficult when it is made oil-based. To speed up the drying you can use in several ways.
You will need
- -the desiccant;
- construction Hairdryer;
- -infrared heater.
This problem in front of you will not even if you replace long drying oil alkyd paint. A good quality enamel dries in a few hours, maximum a day and a half. When purchasing paint, please note that it says on the tin: there is information about its drying time. Although, of course, the manufacturer indicates this time without humidity correction and temperature.
If you decide to use oil paint, purchase and desiccant – catalyst for the oxidative polymerization. This composition added to the paint specifically so that it quickly dried up.
It is not necessary to paint the cold surface at low temperatures. The paint in these conditions, thickens faster, bad apply and longer to dry. Before application warm the room.
The paint would dry faster, apply a thin layer with a roller or brush. If it turns out that the paint shines through the surface, the next day repeat the procedure.
To the oxidation process of the oil film were faster, provide fresh air into the room. Well, if he's going to circulate, so you can turn the fan on or to organize a draft.
Paint dries faster at elevated temperatures and reduced humidity. For oil paint high temperature even recommended as a coating, dried at room temperature, has a low hardness and water resistance, is rapidly destroyed under the influence of alkalis.
Try to use for drying paint heat gun. It has a special mode for this. About conditions you can read in the passport of the device. But to drastically change the temperature of the air or too to bring the dryer to the painted place in any case should not be, otherwise the paint can crack.
If you painted and want to dry small items, you can try to put the battery of Central heating or even dry in the oven at a temperature not exceeding 60 degrees.
The heater, which is based on infrared radiation, is also great for solving your problem, because the infrared rays freely penetrate through the layer of paint. And thus, it heats up from the inside. The solvent, which is in its composition from the inner layer passes into the exterior, the paint spreads on the surface and dries faster.