JP4964532B2 - Glossy painting method - Google Patents

Description

  The present invention relates to a gloss coating on a mortar or concrete surface, and more particularly, to a gloss coating method that enables a simple and high-quality coating.

  Conventionally, oil-based paints, water-based paints, solvent-based paints, two-component paints, dye-type paints, etc. are known as paints, but for mortar or concrete, water-based paints, solvent-based paints, or Two-component paints have been used as preferred. Among these, solvent-based paints are designed on the premise that they have a high volatile content and are applied twice, and two-component paints are dried by chemical reaction, so that none of them is excellent in handling compared to water-based paints. There was a problem. In addition, since these cements are alkaline, sealers and other base treatments may be necessary, which increases the number of steps and has a problem of being inefficient compared to water-based paints.

On the other hand, water-based paints do not have the above-mentioned problems, and are receiving increasing environmental awareness in recent years, and are most often used for concrete.
JP 05-154017 A

However, the conventional technique has the following problems.
First, when applying water-based paint to concrete walls or other materials that have already been cured, or to existing concrete, clean the surface to remove dust and dirt from the surface without applying sealer, putty, or other surface treatment. It is necessary to do.

  However, since the surface of the water-based paint is an absolute condition, it is necessary to wait for the coating to dry until the surface is completely dry.

  Similarly, the application of water-based paints to concrete under curing has a fatal defect that the paint does not harden (does not settle) forever.

  In recent years, there has been a demand for simplification and shortening of manufacturing processes or building processes. Therefore, for example, in the case of precast concrete, there is a demand for a simple paint that can be surface-coated even under a surface atmosphere with a high moisture content and does not require repeated coating. Furthermore, if a film can be formed during curing, moisture will not easily diverge from the surface, and as a result, the concrete surface can also exhibit its original strength and can be less likely to be whitened.

  In addition, recently, owners tend to place importance on design and environment, and prefer a unique appearance. Therefore, even if the material is concrete, the outer wall and the inner wall with high texture are preferred in harmony with the concrete.

  The present invention has been made in view of the above, and provides a method that allows a surface coating of mortar or concrete to be easily performed with a high texture even in an atmosphere with a lot of moisture on the coated surface as well as when it is dry. The purpose is to do.

In order to achieve the above object, the gloss coating method according to claim 1 is a method of performing gloss coating on a mortar or concrete surface, and a lacquer adjusted to be colored and opaque by containing a desired color material is a main ingredient. It is characterized in that the coating material to be applied is applied directly while the surface of the mortar or concrete surface after being wet is wet, and gloss coating is performed once.

That is, since the invention concerning Claim 1 uses lacquer, surface coating with a high texture is enabled. At this time, lacquer paint has fluidity peculiar to lacquer, so it will be impregnated to some extent inside concrete, etc., but there will be no case where moisture is absorbed too much to form a coating film (paste does not occur) ). In addition, the base is effectively covered with the lacquer component, and it has the advantage of being rich in color development without being overcoated. In addition, surface coating can be efficiently performed even in a humid atmosphere. In particular, the application period can be shortened because it can be applied to the object under curing.

  In addition, although a color material mainly means a pigment, it is not particularly limited as long as the base material is covered with the lacquer component so as not to give a ground color on the surface. For example, a dye may be used. Direct application means that an intervening surface such as a sealer or white paint is not separately formed on the surface of concrete or the like as a base agent. In addition, lacquer paint has fluidity peculiar to lacquer, so that the surface of the paint can be smoothed and textured without any surface treatment. Specifically, the surface of mortar and concrete is smoothed and covered with a glossy color, so that a surface design different from the conventional one is formed.

The gloss coating method according to claim 2 is characterized in that, in the gloss coating method according to claim 1, the lacquer is mainly composed of urushiol, lacquer, or thiol.

That is, the invention according to claim 2 enables suitable lacquer coating.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is dry, even if it is an atmosphere with much water | moisture content of an application | coating surface, the method which enables the surface coating of mortar thru | or concrete easily with high texture can be provided.

  Hereinafter, the present invention will be described in detail through examples.

  Two concrete flat plates are made by a regular method, and after curing for 4 weeks, red lacquer (manufactured by Toho Sangyo Co., Ltd .: for Uki) is applied to the surface of one flat plate, and the same concentration is applied to the surface of the other flat plate. Acrylic red paint was applied. Application was performed with a brush. The color of the underlying concrete was not visible immediately after application, but when both were compared after drying for a day, the lacquered concrete board increased in glossiness and glossiness from the surface immediately after application. While remaining, it became a somewhat smooth surface and formed its own design, creating an aesthetic that could not be recalled that the foundation was concrete. On the other hand, the concrete board to which the acrylic paint was applied faded immediately after application, and the color of the background appeared on the front surface one day later, and the color riding was very bad. Although exposed to the outdoors, the lacquered concrete board continued to maintain its original color.

  The difference depending on the paint was the same whether it was concrete or mortar, and was not particularly dependent on the composition.

  Surprisingly, according to the present example, it was confirmed that the direct coating of lacquer on the concrete plate can be performed once (no need for repeated coating) and a simple concrete coating can be realized.

  6 sheets of concrete are made by a regular method, and after curing for 4 weeks, 2 sheets are soaked in water, 2 are wetted with water, and immediately after that, the surface is dried with a dry cloth and 2 sheets are left dry. It was supposed to be. To this, red lacquer (Toho Sangyo Co., Ltd .: for Uki) was applied with a brush. These were observed outdoors and those stored indoors that were not exposed to direct sunlight. Exposure or storage was 1 month.

  As in Example 1, after about 1 day, the lacquer-specific color was settled, and thereafter, no change with time was observed. From the viewpoint of the texture specific to lacquer, there was no particular difference between the dried concrete flat plate and the concrete flat plate from which water droplets were wiped off. On the other hand, when the surface was dampened with water droplets, the lacquer was partially diluted and a brush eye was formed so that the substrate could be seen. However, when a follow-up test was conducted after that, it was confirmed that the texture was almost the same as that of a dry plate if attention was paid during application. There was no difference between outdoor exposure and indoor storage.

  According to the present Example, even if the surface was wet, it was confirmed that the application was possible as in the case of a dry surface. Thereby, for example, when the surface of an existing concrete wall is to be painted, the coating can be started immediately after the surface cleaning to remove the surface dirt.

  Four concrete plates were prepared by a regular method, and when they were cured for 1 day, 3 days, 7 days, and 28 days, red lacquer (Toho Sangyo Co., Ltd .: for Uki) was applied to the surface with a brush. Followed up. As a result, even if it was cured for 1 day, it could withstand the pressure of the painting level, the surface of the concrete would not be damaged by the brush, and the lacquer ride was different from that cured for 28 days. There wasn't. Moreover, although one month follow-up was observed after application | coating, even if it was the case of any curing, the difference was not seen.

  According to this example, it was confirmed that the coating was possible even during curing of concrete. Therefore, for example, a colored concrete board can be efficiently produced even in a precast concrete factory or the like.

  The above has described red lacquer, but the present invention is not limited to this, and the same applies to various pigments. In addition, the main component of lacquer is not limited to the lacquer used in the examples, but if the main component of lacquer is urushiol, lacquer, or thiol, collected from a lacquer plant or scientifically synthesized, There is no difference in effect.

According to the present invention, conventionally, using lacquer that has not been noticed as a concrete paint, it has high texture and can be reformed.

Claims (2)

It is a method of glossy coating on mortar or concrete surface,
Apply a paint containing lacquer that contains a desired colorant and is colored and opaque as the main agent, while the surface after washing the mortar or concrete surface is wet. A glossy coating method characterized by The gloss coating method according to claim 1, wherein the lacquer is mainly composed of urushiol, lacquer, or thiol.