Technique of oil painting and preservation of paintings

[Maikl]

Сообщение от NATA NOVA

And even easier nezya?

    Ultraviolet radiation (UV, UV, UV) - electromagnetic radiation, occupying the range between the visible and X-rays. Under the influence of ultraviolet radiation on human skin, we sunbathe in our body produce vitamin D.
    
     This technology can reduce the time of polymerization of the paint layer.

      Large UV-printers, printers specific colors, solidified under the influence of ultraviolet
       http://www.printsys.com.ua/catalog/p...t/default.aspx

[NATA NOVA]

Thank you. Conceived!

[Seriy]

Maikl, the paint layer of art works be properly protected from ultraviolet radiation, even developed special thin glass for protection against ultraviolet radiation contained in the daylight, as you suggest is irradiated with ultraviolet hard-eject from a lamp half-decayed paint layer. Polygraph paint with UV-cured and hudkraski different things.

[Maikl]

Сообщение от Seriy

Maikl, the paint layer of art works be properly protected from ultraviolet radiation, even developed special thin glass for protection from ultraviolet radiation contained in the daylight, as you suggest is irradiated with ultraviolet hard-eject from under lamp half-decayed paint layer. Polygraph paint with UV-cured and hudkraski are two different things.

Types of UV
Middle NUV
Average MUV
Far FUV
Extreme EUV, XUV
Vacuum VUV
 
 As you can see UV radiation divided into several groups and I do not propose to irradiate hard ultrafialetom Because these technologies used MUV and NUV But even if there is a variable-time So the effect of radiation is very short-term period only polemirizatsii paint layer
   You yourself have complained for a long time drying the paint layer on the canvas
   New is always difficult because to us, no one nedelal

[DSF]

Here is my article "Canvas" by M. Razanov.
"Linen canvas is made of yarn, fiber produced from the stems of flax. It is grayish and yellowish color. It has the most durable and resistant to the effects of atmospheric moisture, temperature fluctuations. Flax fiber in a far lesser degree than others, able to structural changes caused by external physical and mechanical effects. This allows linen fabric will keep its original texture (graininess), which has considerable importance for the painting. linen canvas, depending on the quality of yarn and manufacture can be divided into yarn made from long fibers, and waste Pretreatment of yarn - tops and short fibers. The fabric of flax yarn long fiber has a flat on the thickness of the thread, it is better than that of short fiber and tops, which is very uneven (nodes, thickening, thinning), contains the remains of the plant epidermis (the fires) .
Cloth severe (crinoline) and theater made from tops and short fibers are produced for domestic and technical applications. They are fragile, easily deformed. In addition, the canvas severe in the manufacturing process is treated with acid, and therefore has a high acidity, which affects its strength. Uneven yarn after sizing require special cleaning, this violates the fortress of the canvas, resulting in uneven stress basis sizing and soil. It is in the intensive sites on gluing and soil cracks earlier than in the rest of the plane. Thus, soil freely permeable binder of paint on the reverse side of the canvas. As a result of monitoring the safety of these pictures on canvas, it is obvious that they are unsuitable for painting. Unfortunately, many works of our artists painted and written on such canvases. Also unsuitable sacking from grubostebelnyh (hard, bast) fibers: jute, kenaf and primary processing of waste and scratching nizkomernogo and short flax fiber.
Hemp canvas is made of yarn, fiber produced from hemp stalks. It has greyish-white and greenish tint. Considered the worst kind of yarn fibers, slightly yellow or brown. The strength of the yarn is a linen. Currently, hemp canvas for painting is not available. They are used only for technical purposes.
Jute canvas is made of yarn, obtained from the stems of jute. Has a high gloss, bright-yellow color. Jute yarn is fragile. Its strength is far smaller than that of yarn from flax and hemp. For pictorial purposes is not recommended.
Cotton canvas made from yarn, obtained from cotton seeds. It has creamy-white color. On the strength of much inferior to linen fabric. It is hygroscopic (absorbs moisture), subject to rotting, it can easily develop mold. Stretched on a stretcher made of cotton canvas after some time sags. For pictorial purposes is not recommended.
The synthetic canvas is produced from the yarn, thread which is produced from polyester (produced from waste oil refineries). It is durable, very resistant, does not rot, has no tendency to expansion and contraction depending on the humidity of the environment. Nevertheless, the application of polyester canvas as a basis for painting can not be definitively resolved. This canvas has not passed the test of time.
Combined canvas is most prevalent in the market of art materials. It is produced from yarns combining vegetable and chemical fibers. Domestic production produced so-called half-linen canvas, consisting of flax fibers and synthetic fibers. These canvases are more light tone, as well as synthetic warp threads (polyester or polyester) - white, shiny, and linen weft yarn - gray color. Imported canvases (most of them) are available in a combination of linen with cotton, with polyester, with polyester and viscose, cotton with polyester and viscose with polyester or only. Combined canvases have different elasticity and resistance. Each type of fibers in different ways absorbs moisture, changing the degree of tension the entire surface of the canvas on a stretcher. Unequal hygroscopic raw materials, and consequently, uneven adhesion with the ground causes the rapid destruction of the paint layer. Therefore, we can raise the question of the rationality of the use of combined canvases as a basis for painting. "
  As far as I know, most of our artists do not bother with the canvases, which have - at that and write. Personally, I have decided this issue fundamentally, I do not write on the canvas. I am writing on the smooth side of the hardboard, pre-primed her well.

[Seriy]

DSF, which T-odd article, apparently, very old. As for the acidity of gray cloth not sure. On it, and severe, that is not processed. A bleached preprocessed - yes, chlorine. Besides, all natural fabrics are very easily destroyed by acids.

Canvas or cotton mixed with flax began to sell all traders. On his unfitness somehow forgotten.
Fiber nothing if the small size. A big easy sags. Already zagruntovany from both sides, stand up vertically against the wall and "flowed" - curling, obvisaet.Dlya great work - more than 80 cm on the side - cardboard better-smoother and easier.

I'd recommend you pay attention to the bookbinder's board, domestic and imported - he has different thickness from 0,5 mm up to 3 mm, t f the thickness of the hardboard and fiber structure, quite different - poblagorodney will. Price, very gentle.


LCR kindly gave an explanation about the technique Mikhail Roginsky and movie about this:
This film was said at the forum, but so far it is not attached to any topic, t e can not see it yet. As I understand it, yes, he wrote simply pristeplernom wall canvas, but because of considerations of personal convenience, rather than any technological justification.

[Кирилл Сызранский]

Сообщение от Seriy

This movie was said at the forum, but so far it is not attached to any topic, t e can not see it yet.

Maybe this interesting movie I saw at the presentation of the book "Fools eat cake."
http://forum.artinvestment.ru/showthread.php?t=28695

[NATA NOVA]

Сообщение от Cyril Syzransky

I guess I saw this interesting movie on the presentation of the book "Fools eat cake."
http://forum.artinvestment.ru/showthread.php?t=28695

And where is the movie?

About large canvases ..
How to transport??
(I wonder how the transportation of "Four bouquets of watering?
"Snyali.Namontali on the drum. Subframe razobrali.Perevezli. Rated"?
If you can not carry the whole big picture, of course, there is a sense pristeplivat cardboard on the stationary "stretcher" fastened to the wall ... (one more operation vremeniemkuyu less!)
But then the tension? Only pegs? It turns out that you write on the slack canvas?

Shl: I get dryer. read the instructions. The same poison! ( Toko in well-ventilated area wearing gloves and not breathe !)... Serious stuff!
How to use it I do not know, never before neprihodilos-(d!)
Just realized that less than 1%added to the paint ...

[DSF]

Сообщение от Seriy

DSF, which T-odd article, apparently, very old.

Now look, this is an article from the magazine "Arts Council" 5 (51) 2006.
Fiber I use because I need a flat surface, texture of the canvas does not suit me. Question with sagging large easily solved, the size of more than 1 meter, I stuffed in the frame, less meter - just insert into the frame. The only drawback Fibreboard - is its weight, a large painting with a subframe rather difficult. But transportation is no problem.
I have seen composite pictures, written on pieces of hardboard size of 1.5 m (width) by 2.5 m (height), stuffed to the stretcher. The total size of the picture - from 3 to 5.5 m on the long side. The picture is from 30 to 40 years. They are perfectly preserved. Stand at the wall in the artist's studio.

[NATA NOVA]

Сообщение от DSF

But the transportation is no problem.

And this is true!
How to cook hardboard? Glue (gelatin) -8%- (or 4%?) Or simply promaslit?