What is acrylic paint?
Acrylic paint or polymer coating is a fast-drying paint which is composed of a coloring pigment with a binder of plastic polymer resin from the acrylic group.
What is a binder ?
The base of acrylic paint is an acrylic resin dispersion of tiny particles acrylic divided into water . This dispersion looks like a milk -like liquid, but dries clear at by the evaporation of the water , wherein the particles on the substrate are deposited in a flexible (co-polymer) layer. The binder layer is transparent after drying , and then shows the natural color pigment . Acrylic paint can be diluted with water or toluene , and , after drying, water-resistant . The drying process is irreversible .
During drying , the color of acrylic paint slightly darker and find the evaporation also a significant loss of volume instead . With acrylic paint to achieve a verifiable impasto effect, therefore it is necessary to use . Filler Both the discoloration and the shrinkage does not occur . With oils
The composition of acrylic paint is quite complex . Typically, a mixture is used of two polymeric binders , a soft as a main binder , and the other catalyst ( the last 20% of the "wet" mass , including the water ), a dispersant flow control agent such as Tamol 731 (25% of the wet mass ), a thickener and a pigmentbevochtiger such as Triton CF-10 . The flux must also contribute to preventing the binder as an adhesive from sticking. To the brush Cheaper acrylic species often have only a binder so that the coating is too soft or too hard after drying .
For acrylic paint over the years, a large number of special media painter developed . Which consist of a - or any combination - of the polymeric binders , pure or supplemented with thickening agents and / or fillers. These media are all kinds of glaze and impasto techniques as possible , partly because they change the ratio between the components . The media add to watercolor paints or inks that obtain the properties of acrylic paint . The limitations in choice of pigment in normal acrylics are thus circumvented.
What are Pigments?
In the acrylic paint , the pigment concentration is generally lower than with oil because of the many additives , the half of the mass of paint is composed of water or solvent, and because the manufacturers , even if this is not necessary for a specific pigment by itself , always using a constant amount of binding agent in order to prevent the paint from tearing. upon drying due to uneven shrinkage stress As a result, the colors look less saturated and is bringing . Difficult to cover details The latter is further complicated by the paint very viscous, but the use of toluene as a solvent reduces that problem . Despite, or through , the viscosity the paint is "long " the brush buttons merge again . In general, the cheaper " study paint" less (and cheaper) pigment. Some brands do not use fluxes so that the pigment concentrations are higher .
Some pigments such as Prussian blue, chrome yellow, madder or zinc white , can not be combined with acrylaatbindmiddel because it is alkaline . When the first commercial acrylic water-based painters came onto the market in the fifties , the pigment choice was very limited, the range has been slowly increasing , a process that has been especially strong by developing colors for car paint . Nowadays new pigments are usually first released in acrylic , aging pigments only for traditional reasons used in oil , however, are missing: so is the pigment in acrylic paint supply more modern than in oil .
What kind of surfaces?
A large number of carriers can be used, due to the extremely good adherence often without any preparation of a substrate; the acrylate is thereby not absorbed after all. However, the substrate should not be greasy as it repels the aqueous acrylic paint and do beading. Also, a primer is usually unnecessary, except as smooth metal should be. Painted Acrylics can be well used in a textile carrier, such as linen or cotton, for example, on T-shirts. It adheres well to the fabric, after which it can be or not. Fixed When working with this type of paint, one must keep in mind that the paint dries quickly and is not easy to remove, so it is advisable to draw old clothing or an apron for. Sometimes it is possible to cotton wool or mechanical (scraped off) to clean up after soaking in hot water and soap or chemically with acetone, which can be used to treat. Dried brushes also be used
Rollen, niet schudden
Door schudden van een Game Color of Model Color begint de verf te borrelen uit de top en loopt er uit.
Door het schudden van de verf komt er schuim: de zuurstof in de fles mengt met de verf en vergroot het volume, dus het bruist wanneer u de fles te opent. De juiste manier van mengen van het product is door de fles tussen de handen te rollenl. Het schuim zal na een paar minuten, verdwijnen.
Do not shake the bottles
When shaking a Game Color or Model Color paints thoroughly it starts to bubble out of the top and goes to waste.
Shaking the paint creates foam: the oxygen in the bottle mixes with the paint and expands the volume, so that it bubbles over when you open the bottle. The correct way of mixing the product is rolling the bottle, between your hands. But the foam will subside after a few minutes, and no harm is done.
Inks en Washes
De inkt's zijn meer gepigmenteerd dan de washes, en bevatten meer acryl resin. Dit maakt de inkten resistenter, ze hebben meer body en kunnen worden verdund en gemakkelijk gemengd.
De washes zijn, zoals de naam impliceert, zeer liquide.. Wanneer washes toegepast over het hele oppervlak van het model zal het de kleur verdiepen en de uiteindelijke kleur wijzigen
Beide producten zijn transparant en worden gebruikt voor schaduwen en vervagen, en om de details te vergroten en verdiepen van de schaduwen
Difference between the Inks and Washes
The Inks are more highly pigmented than the Washes, and contain more acrylic resin. This makes the inks more resistant, they have more body and can be thinned down and mixed more easily. All washes are, as the name implies, very liquid. Both products are transparent and used for shading and blending, and to augment the details and deepen the shadows. When applied all over the surface of the model, they will enrich and modify the final color
