SU1369924A1 - Method of producing artistic articles with a coating simulating antiquities - Google Patents

Abstract

The invention relates to a technology for producing decorative articles imitating antiquity, and can be used in the restoration and reconstruction of art canvases and iconography. The invention makes it possible to improve the reproduction of characteristic optical and textural properties of products due to the fact that in the method of making decorative products by applying paint on the substrate, drying it, treating the ink layer with a chemical reagent, subsequent water treatment and final drying of the product on the substrate Cretaceous primer is applied beforehand, paint based on drying vegetable oils is used as a paint, drying of the paint layer is carried out at 15-25 ° C for 30-60 days, as chi chemical reagent using the composition of the composition of benzoyl peroxide from 1.0 to 3.5 wt .-%, iron naphthenate from 1.0 to 2.5 wt.%, manganese naphthenate from 0.5 to I, -0 wt.% and the rest is white spirit, while the treatment with a chemical reagent is carried out at 5-10 ° C for 5-10 minutes, after being treated with a chemical reagent, a plastic film or cigarette paper is glued with the following heat treatment at 30-90 ° C for 1- 5 days under normal or excessive pressure of oxygen, the film is then removed and the paint layer is treated with a 3-5% aqueous solution of sodium carbonate. 2 tab. (L

Description

The invention relates to the technology of obtaining decorative articles imitating antiquity, and can be used during the restoration: reconstruction and reconstruction of various products, in particular, art canvases and iconography.

The aim of the invention is to improve the reproduction of the optical and textural properties characteristic of antiquity,

As paints use standard art paints on drying vegetable oil; oil art paints (white lead, ocher light, gold ocher, umber, sienna, grape black, etc.), tempera paints, oil copal varnishes, etc. Standard chalky soils used in the restoration of painting and gilding on the basis of fish glue, gelatin based glue are used as a chalky ground.

As a film, use is made of plastic tape or tissue paper.

If necessary, oil paints may be added to the paints during the painting process. The treatment with a chemical reagent is carried out either by immersing the reagent in the solution, or by applying a fragment onto the plane of the poly- method.

Heat treatment of the product or the reconstituted fragment after the application of the oxygen-impermeable film i is carried out in a heat chamber with two nozzles of oxygen inlet and outlet at 30-90 C for -5 days. The wound is placed in a heat chamber, hermetically closed, the valve is opened. introducing oxygen and displacing the air from the heat chamber, after which the temperature rises. Depending on the thickness of the paint layer, the oxygen pressure in the heat chamber rises from 1 to 10 atm.

When using the method for the restoration of paintings, a fragment of the restored painting is fixed on the basis of the restored painting.

The method is also used for the accelerated aging of oil varnish, covering tempera and gouache painting.

The method is illustrated by the following examples.

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Example 1. Reconstruction of Dutch painting of the XVII century. On the base (cambric fabric), a layer of 0.1 mm is applied, consisting of a mixture, wt.%: Chalk 95 and fish glue 5. Then, painting in the style of Dutch masters of the 17th century is done in oil. the paints produced by the producer. After drying at a temperature of 20 ° C, the product is immersed in a cuvette with a chemical reagent having the following composition, wt.%:

Benzoyl peroxide 3.0

Iron naphthenate, 5

Manganese naphthenate 0.5

White spirit 95 for 5 min at. Then, after evaporation of white spirit onto the surface of the paint, tissue paper is glued to the standard fish glue, and the paper size must exactly match the format of the fabric base. The product prepared in this way is placed in a hermetic heat chamber, where technical oxygen is supplied under a pressure of 8 atm. The temperature in the heat chamber is 80 C. Time for 3 days. Then the product is removed, tissue paper is removed from it, and the layer of paint is treated with tampons soaked in 5% NaCOj solution, then with distilled water.

After drying, the product is fixed in a frame and the effect of antiquity is evaluated. The assessment reveals the identity of the Old Dutch painting and the fabricated painting from the point of view of texture (the presence of micro- and Markrocracier) and optical properties (the effect of translucent painting) of the painting surface.

I

The study of the painting layer by NMR and EPR shows the absence of both free double bonds and mobile electrons, which confirms the complete polymerization of the oil and its transformation into a three-dimensional structure.

Example 2. Restoration of icon painting of the XV century. On the base - cambric fabric, having the form of a restored fragment, is applied to chalky soil with thickness O, 1 mm. Cretaceous soil consists of 95 wt.% Chalk and 5 wt.% Fish glue. Then the iconography is made with egg tempera, after which the iconography is covered with oil copal varnish.

Drying is carried out at 15-20 ° C for 40 days in a dry, ventilated room. After drying, the iconography surface, coated with varnish, is treated with a chemical reagent having the following composition, wt.%:

Benzoyl peroxide

Iron naphthenate

Manganese Naphthenate

White Spirit

The treatment is carried out for 10 minutes at 10 ° C. After the white spirit is evaporated, a cellophane film is glued to the surface of the varnish and the fragment is placed in a heat chamber with oxygen and then a cellophane film is removed from the fragment, the surface is washed

2.0 2.0 1.0 95

technical - 7 days at.

ki - 60 kHz. Temperature - 293 K stabilized with an accuracy of ± 0.1 K. Tables 1 and 2 present data on the conditions of the method implementation and on the evaluation of the optical and textural properties on the products.

Claims (1)

Invention Formula A method of making decorative items with a coating imitating antiquity by applying a layer of paint to the substrate, drying it, treating the ink layer with a chemical reagent, subsequent processing with water and the final essence of the product, characterized in that, in order to improve the reproduction of old optical and textured " solution of 5% NaCpj and distilled-20 properties on the products, before applying 25 ; NO WATER. The iconography is fixed on the wooden base of the icon along with the restoration. The monitoring is carried out as follows. For the samples, the NMR spectrum is determined and the second order of -c f is calculated. The resulting value of UH.JJ is then compared with the second order of the NMR spectrum for the reference object ,. The reference objects of the AOR are samples of the ink layer obtained from paintings and icons with well-known details of execution from the restoration workshops of the State, Hermitage and State Russian Museum. If the second-order moments of the NMR spectra of the sample and the reference coincide within the known measurement error, then the goal is considered to be achieved. NMR spectra were measured on a wide line NMR spectrometer with an autodyne detector using differential transmission. The working frequency of the proton resonance is 60 MHz, the width of the razorushku is colorful — at 15–25 s. The base paints are preliminarily applied to chalky soil, paint based on drying vegetable oils is used as paint, the layer is applied for 30-60 days, the following composition is used, as a chemical reagent, wt%: Benzoyl peroxide Iron naphthenate Naphthenate manganese white spirit treatment with a chemical reagent is carried out for 5–10 minutes, after treatment with a chemical reagent, a plastic film or cigarette paper is glued with subsequent heat treatment at 30–90 ° C for 1–5 days under normal 40 or oxygen overpressure, removal of the film and treating the ink layer with a 3-5% aqueous solution of sodium carbonate. 1.0-3.5 1.0-2.5 0.5-1.0 Else 35 five ABOUT color drying at 15-25 s The base paints are preliminarily applied to chalky soil, paint based on drying vegetable oils is used as paint, the layer is applied for 30-60 days, the following composition is used, as a chemical reagent, wt%: Benzoyl peroxide Iron naphthenate Naphthenate manganese white spirit treatment with a chemical reagent is carried out for 5–10 minutes, after treatment with a chemical reagent, a plastic film or tissue paper is glued, followed by heat treatment at 30–90 ° C for 1–5 days with normal 0 or oxygen overpressure, removing the film and treating the ink layer with a 3-5% aqueous solution of sodium carbonate. 1.0-3.5 1.0-2.5 0.5-1.0 Else five 1Л 1/1 1Л (П СЛСЧ- «  § S § § § S S § ° 222Su ,, g.l2 000o 2 "L1P1L1L - - P - 1Л1ПООООО about o - - - - -. - with - (H in about Oil on painting Oh 1 Also . it Iconography 0,2 Same 0.3 7.0310.6 The numerical characteristic of the width of the spectrum HMPuHjj - moment 00 j the resonance line uHjj S h g (h) gh, where h is the deviation of the resonance quantity; g (h) is the registered spectrum. The higher accuracy of the determination of iiHjj standards is explained by the larger volume of binder material used for FMR spectroscopy iH ,, about the same 7.2710.5 High values of 4 ° C for icon painting samples are explained by impurities of the components of temperate and amber varnish. second half external floor from