How to dilute paint with a solvent - process rules
The process of painting a car body is a very complex technological process which have strict quality requirements for the materials used. And before you start painting, you should dilute the coloring composition to the required consistency, and even viscosity - without this, a quality result will not work, and it will be difficult.
We suggest that you consider how to dilute paint for painting a car with a solvent. Why do you need to dilute paints? When the preparation work on the body is over, there will still be microscopic cracks on the surface that are not visible to the naked eye.
The paint and varnish material should be diluted so that it can fully fill all microscopic cavities and cracks.
The dilution process reduces the viscosity of the product and its thickness.
Due to dilution, the dye will adhere much better to the surface even and thin layer. Even the specifics of the work depends on the physical properties of certain coloring compositions. If a spray gun is used as the main working tool, then the paint for painting road transport should be diluted to a liquid state. In this way, the coloring material will better pass through the spray nozzle.
When working with a brush, the viscosity of the paint must be lower. The composition must also dry out quickly so that smudges and other defects appear on the body. In order to minimize the cost of purchasing the required materials and at the same time not to lose the quality of coloring, you should know how to properly dilute the paint, depending on its chemical composition.
All paints for painting cars, as well as enamels, have three main components in their own composition:
Different types of dyes have different physical characteristics - density, elasticity, degree of fullness, and also the hardness of the layer after drying.
Any type of car enamel is sold as a liquid, but this does not mean that it can be used immediately. Productively, it already adds a solvent to the paint and varnish composition, but exactly the amount so that the composition does not freeze. To obtain a uniform type of coating, the material must be thinned additionally.
This type of coating protects the body from corrosion and damage.Before you start mixing paints and varnishes with solvents, you should remember that manufacturers have already added a certain amount of it.
Depending on this, the coloring compositions can be divided into:
By the way, fullness is a property that determines the volatility and viscosity of a product, and it helps to understand how much solvent can be added.
Solvents, as well as paints and varnishes, can be different, and we propose to consider their main types. Depending on the rate of evaporation, the following types of compositions should be distinguished:
- Slow - they are used for work in the summer time period or at high temperatures.
- Fast - the components that are in the composition will accelerate the drying process and make it possible to work with the material even in winter.
- Universal - allowed for use at medium temperatures.
Next, consider another classification.
Now you know if the paint can be diluted with a solvent, but depending on the physical and chemical characteristics, two groups of solvent compositions can be distinguished:
In order to more accurately determine how to dilute certain paints and varnishes, you should find out what kind of solvent the manufacturer used.
Choose polar to polar or non-polar to non-polar.
Information about how much solvent should be added to the required consistency, the manufacturing company indicates on the package. For example, in the case of using acrylic, which already contains a certain proportion of the activator, and the solvent is added at a minimum volume - the proportion will be from 10 to 15% of the main amount of paint and varnish material.
Pay attention! How to dilute the paint when it comes to a two-component composition? Many people use such proportions - for every 2 liters of paint they use 1 liter of solvent and 0.3 liters of hardener.
As far as correct proportions are observed, the result will be of high quality.
In order for the paint and varnish material to be prepared correctly, experts advise using a flask or a measuring ruler. This is required to ensure that the proportions of coloring agent, solvent and hardener are fully consistent with those recommended by the manufacturer. It is also worth getting the correct degree of viscosity of the diluted mixture - it can be determined using a device such as a viscometer.
You can also determine the degree of viscosity by eye - the liquid should drip, not flow in a stream.
The viscosity will also vary according to how and with what you plan to paint. So, for spray guns with a small nozzle, it is required that the coloring composition be liquid, and for work with a roller or brush, you can make the dye much thicker.
Craftsmen recommend that mixing containers have an ideal cylindrical shape. This is the only way to evenly mix all components and measure the quantities correctly. Measured dishes are best suited - a plastic jar with a lid.
It has markings that will make it possible to mix components in different proportions. The base should be poured into the dishes to the required division, and after the tuga add a hardener or solvent. It will be convenient to mix the components with a measuring ruler and the paint will be diluted. Often, a measuring ruler is sold along with a paint and varnish material, and cans from popular brands always have proportions for such rulers. For a two-component type, add 50% hardener and no more than 20% solvent.
The dilution rate of the base enamel can be from 50 to 80%. How to dilute the paint exactly, you should see in the instructions.
It will differ from ordinary metallic paints by the presence of aluminum powder in the composition. These are automotive enamels that are made from a binder, solvent, pigment, and even small metal particles. The paint should be applied in a thin and even layer - for this it must be liquid.
We suggest looking at how to dilute the paint with a solvent when it comes to "metallic".
This proportion of solvents and coloring compositions is most often used - 1 to 1. But this will depend on the method of applying the latter. First of all, paint the prepared surface with a dry layer - for this you should use 2 measures of dye and 1 measure of solvent. Then apply a second thick layer with a ratio of 1 to 1.
After drying, apply a new layer, but it should be thinner.
In order to paint a car properly, you should choose the right color and dye. There are a lot of paints for all tastes, and we already know how to dilute them correctly. For this reason, a quality result will be guaranteed.
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