JPS594509B2 - Treatment agent for iron coating surfaces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment agent that turns the surface of an iron coating on a sculptural object yellowish brown or reddish brown.

Traditionally, sculptures were made of wood, plaster, or metal casting.

These sculptures have been produced since ancient times, and people in the world have loved them deeply.In particular, there are many sculptures made of metal castings, mainly copper, bronze, or iron, and these sculptures deteriorate over time. For example, the former produces green rust and the latter produces brown rust, and on the other hand, these rusts enhance the deep aesthetic sense of these objects and increase their artistic value.
It is generally accepted that it further increases the so-called bony value. However, producing such sculptures by casting metal requires complicated processes and long experience.
It is possible, but difficult for ordinary people.

However, the general public also has a craft interest in wanting to try this kind of production, and if such sculptures can be easily produced, they will be even more motivated to create them, and everyone will be able to enjoy art more. You will be able to feel the fulfillment of your heart. For this reason, the inventor proposed in Japanese Patent Application No. 54-167590 that based on the invention, a metal coating solution, that is, a copper coating agent was applied to the surface of a sculpture made of synthetic clay. It was possible to produce an old copper sculpture that had aged for many years in a short period of time using the dark coloring agent F0.

To explain the above outline, the main ingredient of the treatment agent in this case is a sulfide compound, and this reacts with the copper in the copper coating agent, causing a dark color and green rust on the surface of the sculpture, and for example, It was possible to make it an aged sculpture.

However, when the iron coating agent is applied to the surface of the sculpture as in the case of the present invention, the coated surface is already 10 colors of dark gray and does not have the metallic luster peculiar to copper unlike the above-mentioned copper coating surface.

Therefore, it is not suitable for iron coating surfaces such as those of the present invention, and cannot be applied to the aged brown rust of sculptural surfaces of general iron castings. In this sense, the inventors decided to treat the 15 layers of iron coating on the surface of the sculpture for a short time to preserve the yellowish brown or reddish brown appearance on the aged iron casting surface. As a result of extensive research, the present invention solves the above-mentioned problems and provides a treatment agent that, by short-term treatment of the iron coating surface of the sculptural object surface, exhibits the same masculine appearance as the sculptural surface of aged iron castings. Specifically, ammonium chloride is added to a solution of inorganic peroxide as a treatment agent to treat the iron coating surface applied to the surface of the sculpture to give it a yellowish or reddish brown coating surface. It is characterized by being composed of aqueous liquid in which . Next, embodiments based on the present invention will be described. As mentioned above, the sculpture used in the present invention is preferably made of synthetic clay. This is because the sculptures made with Synthetic 1 clay are similar to conventional clay, and are free from the brittleness of the sculptures. For example, if it does not break or break even if it falls over, it dries easily and is easy to make, and the resulting sculpture is finished as described below, it is a replica that is no different from a metal casting from the perspective of men. It can be done. Apply an iron coating agent to the surface of the sculpture created as described above.

In this case, the iron coating agent used was a commercially available polyacrylic acid engineering still emulsion containing Poval, and iron powder of an appropriate particle size was mixed therein. It should be noted that the mixing ratio of iron powder and emulsion liquid is preferably 1:0.8 to 1.3.The iron coating surface coated on the surface of the plasticized body with the iron coating agent thus prepared has a dark gray color. It shows.

By treating this iron coating surface with a treatment solution based on the present invention described below, the dark gray iron coating surface can be turned yellowish brown or reddish brown. In addition, in the present invention, first, in the above-mentioned iron coating agent, 0.2 to 0.0 of water-soluble poval is added to a commercially available polyacrylic acid polystyrene emulsion in an emulsion amount.
It is characterized by mixing 5% of the amount.

This method is based on the method disclosed in Japanese Patent Application No. 55-30921 by the inventor.

The reason for this is that, as mentioned above, for the painted surface where the iron coating agent, which is a mixture of commercially available polyacrylic acid steel emulsion and iron powder, is simply coated on the surface of the sculpture, the treatment agent based on the present invention is applied as described later. Even if the surface is treated with , the treatment effect is not sufficient because the liquid is repelled by the coating surface. However, it has been found that this can be prevented by incorporating a small amount of hydrophilic poval into the above-mentioned iron coating agent.

Incidentally, the amount of water-soluble poval to be mixed is sufficient at 0.2 to 0.05% of the amount of the emulsion liquid, but it is preferably around 0.1%. If the amount is 0.2% or more, bubbles will easily form when the coating surface is treated with the treatment agent, and if the amount is 0.05%, the treatment agent will be repelled from the coating surface and the treatment effect will not be sufficient.

In addition, as a water-easy polymer, C.I. M. There are C, methyl cellulose, etc., but since the processing agent is oxidizing, the presence of these tends to reduce the effectiveness of the processing agent, so Poval, which is stable against oxidation, was particularly used in the present invention.

In addition, when an iron coating agent containing water-soluble poval mixed with polyacrylic acid steel emulsion is applied to the surface of the sculpture as described above, the water-soluble poval is uniformly present during the application. 7! <． The processing liquid, which is a liquid liquid, easily permeates and is not repelled by the membrane surface. Next, by treating the dark gray iron coating surface applied to the surface of the sculpture to yellowish brown or reddish brown with the treatment agent based on the present invention, the iron can be completely aged in a short period of time as described above. It can be made of something similar to casting. That is, the treatment agent for iron coating surfaces according to the present invention is a mixture of ammonium chloride and a peroxide-containing aqueous solution. The aqueous peroxide solution in this case is an aqueous alkali chlorite solution, an aqueous hydrogen peroxide solution, an aqueous alkali persulfate solution, or the like. Further, although the molecular weights of these peroxides are different, the concentration when used is 1 to 10%.

For example, sodium chlorite is 1-5%, hydrogen peroxide is 3-5%
%, or ammonium persulfate is 10-15%, etc. At concentrations below 1%, it takes time to discolor the iron coating surface, and the degree of discoloration is too weak. Furthermore, if the concentration is 10% or more, the brush used will be easily damaged, and the degree of discoloration will be too rapid, making it difficult to control the deep color of the film surface. As mentioned above, when an iron coating surface is treated with a treatment agent, the iron in the coating is oxidized and is thought to become, for example, triiron tetroxide Fe, O4, and the coating surface exhibits a yellowish brown color.

However, in order to make the coating surface look more like iron rust, it is possible to make it dark reddish brown by adding ammonium chloride to the peroxide solution. An amount of 2-0.2% of the amount is sufficient. In addition, in this case, by increasing the amount of ammonium chloride added to the hydrogen peroxide solution, the iron coating surface can change from yellowish brown to dark reddish brown.
In this case, the mechanism of action of ammonium chloride is not clear, but it works by stimulating the metal surface to activate metal ionization, changing the pH of the one-sided treatment solution, and at the same time controlling the action of oxidizing metal ions with peroxide. it is conceivable that. In addition, the treatment method is to apply a little bit of the treatment agent to the iron coating surface on the sculpture surface with a brush or brush dipped in the treatment agent while applying pressure, and when the coating surface dries, apply again.This operation is repeated several times. Through repeated use, the paint surface becomes yellowish brown, and the surface of the sculpture ages, taking on the same masculinity as rusted iron castings.

This discoloration becomes more visible after half a day. The degree of discoloration can be controlled to express the shading according to the surface of the sculpture and according to the individual's taste, and it is possible to obtain something similar to ironwork that is even more aged and full of charm. According to the present invention, the dark gray iron coating surface obtained by applying the iron coating agent to the surface of the sculpture is treated with the above treatment agent to change the coating surface from yellowish brown to dark reddish brown in a short time. You can also obtain sculptures that look exactly like cast iron objects that have aged and become pale. Next, examples based on the present invention will be shown. Example 1 A sculpture of a human face made of synthetic clay was coated with iron powder mixed with 90 g of 150 mesh iron powder mixed with 35 g of commercially available polyacrylic acid engineered steel emulsion and 0.3 g of water-soluble poval. Apply a treatment agent made by mixing 20 g of 2% sodium chlorite solution with 0.2 g of ammonium chloride to the surface of the coated film after the coating agent has been applied and dried, using a synthetic bristle brush moistened with sufficient pressure and applying slight pressure. do.

Approximately 15 minutes after application, the coating surface is again coated with a treatment agent as described above. By repeating this several times, the iron coating surface gradually changes color and takes on a reddish brown color. The sculpture obtained in this way was exactly the same as the aged sculpture, which had a dark reddish-brown color and pale appearance. Furthermore, in this case, even if the coating surface coated with an iron coating agent made by mixing iron powder with only a commercially available polyacrylic acid polystyrene emulsion is treated with the above treatment agent, the coating surface will be repelled. No effect was obtained. Example 2 An iron coating agent prepared by mixing 20 g of 200 mesh iron powder with 25 g of commercially available polyacrylic ester mixed with 0.2 g of water-soluble poval was applied to the surface of a sculpture molded in the same manner as in Example 1. When treated in the same manner as in Example 1 using a treatment agent mixed with 20 g of hydrogen peroxide (4%) and 0.2 g of ammonium chloride, the coating surface became yellowish or brownish, similar to old iron castings that had aged. I got something.

Example 3 The surface of a sculpture molded in the same manner as in Example 1 was coated with an iron coating agent mixed with a commercially available polyacrylic acid industrial steel emulsion in which 20 g of 150 mesh iron powder was mixed with 0.1 g of water-soluble poval. The gray iron coating surface was treated in the same manner as in Example 2 using a treatment agent containing 2.5 g of ammonium persulfate mixed with 20 g of water instead of the hydrogen peroxide solution (4%) used in Example 2. The surface of the body gradually turned yellowish brown, giving the sculpture a patina of age.

Example 4 In the same manner as in Example 3, instead of the hydrogen peroxide (4%) in Example 2, a treatment agent of 20 g of hydrogen peroxide solution (3 (1f)) mixed with 2 g of ammonium persulfate was used. When treated in the same manner, the surface of the iron coating became a yellowish reddish-brown surface, which was exactly the same as that of aged iron castings.

As is clear from the examples above, the iron coating agent based on the present invention is applied to the surface of the sculpture, and the coating surface is coated with a treatment agent that is an aqueous solution containing peroxide containing ammonium chloride. By processing the sculptures at room temperature, these sculptures can be quickly and easily given a yellowish or reddish brown surface, giving them a patina with age. For this reason, ordinary people can easily make prototypes, and they can also contribute to crafts.

Claims (1)

[Scope of Claims] 1. Treating the surface of an iron coating formed by applying a paint containing iron powder to a polyacrylic acid ester emulsion in which POVAL is dissolved on the surface of a sculpture, and changing the surface of the iron coating from yellowish brown to yellowish brown. A treatment agent for iron coating surfaces, which is characterized by being made of an aqueous solution of inorganic peroxide in which ammonium chloride is dissolved to give a dark reddish brown color. 2. The treatment agent for iron coating surfaces according to claim 1, wherein the aqueous solution of inorganic peroxide comprises an alkaline chlorite solution, hydrogen peroxide, ammonium persulfate, or a mixture thereof.