JP2001106979A - Coating material and method for finishing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coating material having excellent coating workability and excellent appearance of finish and to provide a method for finishing the coating material. SOLUTION: This coating material is obtained by compounding a base coating material with glass beads having 0.3-0.5 mm average particle diameter and glass beads having 1.0-2.0 mm average particle diameter. This method for finishing the coating material comprises using the coating material for topcoating in a finishing method for carrying out finishing through a sealer and undercoating on a substrate of mortar, sizing board, etc., and topcoating with a trowel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating material and a method for finishing the same, and more particularly, to a coating material having an appearance excellent in design, enabling a simple coating operation, and realizing a coating film having a uniform thickness. About the method.

[0002]

2. Description of the Related Art Conventionally, it has been difficult to finish the iron with a uniform thickness due to the tackiness of the binder component of the coating material with the iron, and it has also been difficult to realize the finishing of a new design.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a coating material capable of achieving a uniform thickness finish and a new design finish, which have been difficult with conventional ironing methods, and a method of finishing the same.

[0004]

SUMMARY OF THE INVENTION The present invention has been made possible as a result of conducting various studies in view of the above circumstances.
After applying a sealer to the base of mortar, sizing board, etc., apply an undercoat made of water-based paint, and then apply an overcoat made of water-based paint containing specific glass beads, so that a uniform thickness of coating is applied. A film and a finish with a new design can be realized by a simple operation. Hereinafter, the present invention will be described in detail.

The sealer according to the present invention comprises a resin solution or a resin emulsion, and is used to prevent suction on a base material which is permeable to paint such as mortar and sizing boards which have been frequently used recently, and where suction is severe. .

[0006] The sealer includes a composition obtained by dissolving an epoxy resin, a urethane resin or the like in various organic solvents, an acrylic resin, an acrylic / styrene copolymer resin, a vinyl acetate resin,
A resin emulsion such as an ethylene / vinyl acetate resin is used. As described above, the sealer can penetrate into the base to prevent penetration and suction of the undercoating agent, and can also reinforce the surface layer of the base and ensure adhesion of the coating material.

[0007] The undercoat material is based on a resin emulsion such as an acrylic resin, an acrylic-styrene copolymer resin, a vinyl acetate resin, an ethylene-vinyl acetate resin, etc., to which a coloring pigment such as titanium oxide, red iron oxide, zinc white, cobalt blue or the like is added. Is used. The undercoat is applied by a coating method such as brushing or spraying.

As the overcoating material, one obtained by kneading two kinds of glass beads based on the same binder component as the undercoating material is used. Glass beads have an average particle size of 0.
A type having an average particle diameter of 3 to 0.5 mm and an average particle diameter of 1.0 to 2.0 mm is used. By using a glass bead having an average particle diameter of 1.0 to 2.0 mm, a coating film having a uniform thickness of 1 to 2 mm is ensured, and a simple coating workability is obtained by troweling on the surface of the glass beads, and 0.3 By using glass beads having a size of 0.5 mm, a filling effect and a dispersing effect between the glass beads can be obtained, which helps to prevent a reduction in the coating film and also has an effect of improving the coating workability in a complex manner.

The mixing ratio of the base paint and the glass beads is as follows:
50 kinds of resin equivalent to 50% resin content
Use an appropriate amount of defoaming agent, film forming aid, thickener, etc.
Parts of base paint 150 parts and glass beads 30
0-500 parts are suitable. When the compounding ratio is within this range, the coating workability is good, whereas when the compounding amount is small, there are problems such as drying property and designability, and when it is too large, the coating workability is poor and the adhesion is poor. Not suitable due to problems such as reduced performance. The kneading of the base material and the glass beads is performed beforehand at a factory or at a coating site.

The resin emulsion can be selected in consideration of various characteristics of the resin, and it is preferable that the resin content in the base coating material is in the range of 20 to 50%. If it is 20% or less, it is difficult to obtain the effect as a binder, and if it is 50% or more, it is excessively compounded in view of the binder effect and is not suitable in terms of cost.

The adjustment of the resin content in the base paint can be performed by selecting the type of the resin emulsion and adjusting the mixing water, and may be determined in consideration of the coating workability, the finished appearance, and the like.

Silicone compounds, ether compounds, fatty acid ester compounds and the like are used as the defoaming agent to be incorporated in the base paint, and can effectively eliminate bubbles in the coating film. Texanol, benzyl alcohol, butyl cellosolve, or the like is used as a film-forming aid, and can easily form a coating film. In order to obtain a viscosity suitable for coating, it can be adjusted by using an appropriate amount of methylcellulose, hydroxyethyl / methylcellulose, hydroxypropylmethylcellulose, or the like. If a dispersant such as a nonionic surfactant or a polyphosphate is used to ensure the dispersion of the compounding material, a good dispersion effect can be obtained.

[0013]

[Function] Of the two types of glass beads, the glass beads having a large average particle diameter can be easily moved by troweling the overcoating material because the trowel surface can easily move by contacting the smooth surface of the glass beads. Well, the application work can be simplified. At the same time, a spacer effect of forming a uniform coating film between the glass beads is exerted, which is useful for forming a coating film having a uniform thickness. The glass beads having a small particle diameter fill the space between the large glass beads to prevent aggregation, and disperse the large glass beads to provide an effect of supporting the spacer effect. In addition, since the space between the large glass beads is filled to prevent the loss of the coating film due to drying, an effect of ensuring uniformity of the coating film is brought about.

Examples 1 and 2 A ceramic sizing board was used as a base, an acrylic resin emulsion was applied as a sealer and dried, and then titanium oxide was added to an acrylic / styrene resin emulsion as an undercoat material and colored. An undercoat layer is formed by using a glass bead having an average particle diameter of 0.3 to 0.5 mm and a glass bead having an average particle diameter of 1.0 to 2.0 mm in 150 parts of a base paint having the following composition. 1
300 parts and 500 parts of glass beads mixed at a ratio of 1: 1 were kneaded and adjusted, and the top coats of Examples 1 and 2 were each coated with 800 g / m ^{2 of} iron to finish the coating. In the coating finishes of Examples 1 and 2, the glass beads having two kinds of particle diameters have the effect of preventing aggregation of glass beads of the same diameter, and the iron easily moves between the surfaces of large glass beads smoothly and at the same level. Therefore, the coating operation was extremely easy, and coating with a uniform thickness was possible. In addition, a finish having a characteristic appearance in which a part of the surface of the glass beads was exposed and the inside of the coating film was seen through was obtained.

Comparative Examples 1 and 2 The same procedure as in Examples 1 and 2 was carried out except that 250 parts and 600 parts of the glass beads of the example were used. In the coating finish of Comparative Example 1, since the amount of Crows Bees II was small, the coating material was easy to hang, and the iron was difficult to move at the same level, and it was difficult to secure a uniform coating film. Also, the step was noticeable and the finished appearance was not good. In the coating finish of Comparative Example 2, the compounding amount of the glass beads was large and the ironing operation was difficult, and the adhesion to the undercoat layer was inadequate.

Acrylic / styrene resin emulsion (resin content: 50%) 50 parts Antifoaming agent 0.1 parts Film forming aid 3.1 parts Dispersant 0.2 parts Thickener 1.5 parts Water 50 Copies Total 104.9 copies

[0017]

[Effect] The finished painted surface has a unique surface appearance such that the surface of the undercoat layer and the inside of the overcoat layer can be seen through, exposing a part of the surface of the glass beads and reflecting light inside. The design can be given. Since the coating material according to the present invention has large glass beads and small glass beads kneaded in the base paint, the small glass beads exhibit the effect of preventing aggregation of the large glass beads and dispersing them, The large glass beads can easily move between the upper surfaces of the large glass beads at the time of coating with a trowel, so that a spacer effect can be provided to make the coating uniform and a coating having a uniform thickness can be formed. In addition, since the surface of the iron easily slides on the surface of the glass beads, the operation of the iron is easy and the coating can be performed easily.

Further, the small glass beads have an effect of supporting the spacer effect by the effect of dispersing the large glass beads, and have an effect of filling the space between the beads, so that the step of the coating film can be prevented from being reduced. Easy to secure film.

Claims (2)

[Claims] 1. The base coating composition has an average particle size of 0.3 to 0.5.
A coating material characterized in that glass beads having an average particle diameter of 1.0 to 2.0 mm are mixed and adjusted. 2. A method for finishing a base such as a mortar or a sizing board through a sealer, an undercoat and an overcoat with a trowel, wherein the overcoat has an average particle diameter of 0.3 to 0.5 mm and an average particle diameter of 1.0 to 0.5 in a base paint. 2.0mm
A finishing method characterized by using a coating material containing glass beads.