Pintar con oleo...?

Question

Alguien sabe cómo se llama el líquido que se usa para suavizar el oleo...(es que no me acuerdo) thanks!

Answer 1

trementina, lo hace mas liquido y transparente, pero le quita brillo
aceite de lino polimerizado, le da mas transparencia sin restarle cuerpo ni brillo, retarda mas el secado
secante de cobalto, acelera el secado

Answer 2

Si quieres que tu pintura seque rapidísimo, usas secativo violeta, que le va a quitar un poquito la brillantez al óleo, pero le da un aspecto algo envejecido. Sirve para copias de pinturas antiguas. Si no te importa que tarde algo más en secar, le pones espiríritu de trementina, también conocido como "aguarrás purificado" o "aguarrás bidestilado". Si quieres utilizar la técnica clásica, le pones aceite de linaza, pero entonces vas a tener que ser muy precisa en tus pinceladas, porque va a tardar muchísimo en secar.
Puedes usar los 3, pero debes de recordar que en la capa inferior va el secativo, en la siguiente la trementina, luego el óleo sin disolver y al final con aceite de linaza. Como ya te indicó alguien, siempre se pinta graso sobre magro y el orden es ése: secativo-trementina-aceite.
Si le quieres poner barniz damar encima, debes esperar a que la pintura esté seca cuando menos en la capa exterior, un par de semanas a un mes después de la última pincelada. El barniz se aplica en una sola pincelada por espacio y en una sola dirección, con la pintura acostada o en barniz en aerosol.

Answer 3

http://780541hbkcva-v4jq7w3scubtc.hop.clickbank.net/

Answer 4

aguarrás y aceite de linaza

Answer 5

se llama aceite y puedes usar el de oliva.



Unlike water-based paints, oils do not dry by evaporation. The drying of oils is the result of an oxidative reaction, chemically equivalent to slow, flameless combustion. In this process, a form of autoxidation, oxygen attacks the hydrocarbon chain, touching off a series of addition reactions. As a result, the oil polymerizes, forming long, chain-like molecules. Following the autoxidation stage, the oil polymers cross-link: bonds form between neighboring molecules, resulting in a vast polymer network. Over time, this network may undergo further change. Certain functional groups in the networks become ionized, and the network transitions from a system held together by nonpolar covalent bonds to one governed by the ionic forces between these functional groups and the metal ions present in the pigment.

Vegetable oils consist of glycerol esters of fatty acids, long hydrocarbon chains with a terminal carboxyl group. In oil autoxidation, oxygen attacks a hydrocarbon chain, often at the site of an allylic hydrogen (a hydrogen on a carbon atom adjacent to a double bond). This produces a free radical, a substance with an unpaired electron which makes it highly reactive. A series of addition reactions ensues. Each step produces additional free radicals, which then engage in further polymerization. The process finally terminates when free radicals collide, combining their unpaired electrons to form a new bond. The polymerization stage occurs over a period of days to weeks, and renders the film dry to the touch. However, chemical changes in the paint film continue.

As time passes, the polymer chains begin to cross-link. Adjacent molecules form covalent bonds, forming a molecular network that extends throughout painting. In this network, known as the stationary phase, molecules are no longer free to slide past each other, or to move apart. The result is a stable film which, while somewhat elastic, does not flow or deform under the pull of gravity.

During the drying process, a number of compounds are produced that do not contribute to the polymer network. These include unstable hydroperoxides (ROOH), the major by-product of the reaction of oxygen with unsaturated fatty acids. The hydroperoxides quickly decompose, forming carbon dioxide and water, as well as a variety of aldehydes, acids, and hydrocarbons. Many of these compounds are volatile, and in an unpigmented oil, they would be quickly lost to the environment. However, in paints, such volatiles may react with lead, zinc, copper or iron compounds in the pigment, and remain in the paint film as coordination complexes or salts. A large number of free fatty acids are also produced during autoxidation, as most of the original ester bonds in the triglycerides undergo hydrolysis. Some portion of the free fatty acids react with metals in the pigment, producing metal carboxylates. Together, the various non-cross-linking substances associated with the polymer network constitute the mobile phases. Unlike the molecules that are part of the network itself, they are capable of moving and diffusing within the film, and can be removed using heat or a solvent. The mobile phase may play a role in plasticizing the paint film, preventing it from becoming too brittle.

One simple technique for monitoring the early stages of the drying process is to measure weight change in an oil film over time. Initially, the film becomes heavier, as it absorbs large amounts of oxygen. Then oxygen uptake ceases, and the weight of the film declines as volatile compounds are lost to the environment.

As the paint film ages, a further transition occurs. Carboxyl groups in the polymers of the stationary phase lose a hydrogen ion, becoming negatively charged, and form complexes with metal cations present in the pigment. The original network, with its nonpolar, covalent bonds is replaced by an ionomeric structure, held together by ionic interactions. At present, the structure of these ionomeric networks is not well understood.

Answer 6

Puedes usar thinner o agua ras, son los más económicos
También existen los preparados por las distintas marcas de pintura

Answer 7

Puedes utilizar Esencia de Trementina para disolverlo y lograr un secado un poco más rápido.
Puedes usar Barniz Damar para darle brillo y transparencia.
Cobalto para el secado rápido.
Aceite de Lino para disolverlo y suavizarlo.

Answer 8

Aguarrás no porque ennegrece a mediano plazo. Trementina es lo mejor, pero para retardar el secado y darle brillo a la materia: aceite de lino purificado. Para acelerar el secado: secante de cobalto en gotas, o te quemará los colores claros

Answer 9

Es un disolvente, puede ser aguarrás, trementina (estos dos te sirven luego para lavar los pinceles), aceite de lino o algún barniz para óleo (se compran para la terminación del cuadro viene con brillo y sin).
Cuando era estudiante de Arte usábamos el barniz para exteriores ploriuretano, que resultaba bueno por que aceleraba el secado del oleo y lo dejaba un poco brilloso, al final le volvía dar una mano, tambien es bueno para hacer veladuras; yo ahora ya no pinto (hago otro tipo de arte) y todas las pinturas que conservo después de 30 años estan en muy buen estado.

Answer 10

Se llama "medium". La trementina, el aguarrás e incluso el aceite, pueden adelgazar el òleo.