JP2001302987A - Building coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building coating material which is easy to conduct coating operation and, in addition, in superior in coating performance. SOLUTION: By including finely cut carbon fibers in a rubber based coating material to entangle the rubber based coating material in the carbon fibers and further producing the state such that the carbon fibers are further entangled in one another, sagging of the coating material is rendered difficult to occur in conducting coating operation and, in addition, the tensile strength of the coating film after curing is improved, and furthermore the carbon fibers which are incombustible and hard to absorb water not only make the coating film hard to burn but also prevent water infiltration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an architectural paint which is applied to an inner wall, an outer wall, a roof or the like of a building to protect the building surface of the building.

[0002]

2. Description of the Related Art Conventionally, the painting of a building is performed on the surface of the building frame.
A sealer, a rubber-based paint, a finish paint, and the like are sequentially applied and laminated. The rubber-based paint uses a rubber material such as urethane rubber, acrylic rubber, or chloroprene rubber as a main raw material, and prevents cracks on a wall surface by its elasticity. Some of the rubber-based paints are mixed with pearlite in order to improve the coating workability by making it hard to sag.

However, in the conventional rubber-based paint containing the above-mentioned perlite, since the perlite easily absorbs moisture, the absorbed water causes the coating film to be peeled off from the building frame, or the building frame to be oxidized, degraded or corroded. And sometimes Further, in the above-mentioned conventional rubber-based paint, since the perlite mixed therein has a property of being easily dissolved in the oil-based paint, a highly waterproof oil-based paint cannot be used as a finish paint of the outermost layer, and a water-based paint is used. Was used. Therefore, at present, the rubber-based paint mixed with pearlite is coated with a thick coating to ensure waterproof performance.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an architectural paint which is easy to apply and has excellent coating performance. Is to do.

[0005]

Means for Solving the Problems As a technical means of the present invention for solving the above-mentioned problems, a first aspect of the present invention relates to a rubber-based paint containing finely cut carbon fibers. Features. Here, the rubber-based paint means a general paint such as a urethane rubber-based paint, an acrylic rubber-based paint, a chloroprene rubber-based paint, and a rubber asphalt-based paint. According to the above technical means, since the architectural paint of the present invention has carbon fibers mixed in the rubber paint, the rubber paint is entangled with the carbon fibers, and the carbon fibers are entangled with each other. Therefore, the paint does not easily drip during the coating operation, and the cured coating film has a strong tensile strength and is hard to break. Moreover, it contains non-combustible carbon fibers, so it is difficult to burn. In addition, since the carbon fiber has a property of hardly absorbing moisture, penetration of moisture from the outside is prevented.

A second aspect of the present invention is characterized in that the rubber-based paint is an acrylic rubber-based paint. Furthermore, a third aspect is characterized in that the content of the carbon fiber is 5% or more and less than 10%.

[0007] The content means the volume ratio of carbon fibers contained in the rubber coating. The content rate is 5
% Or less, it becomes difficult to exert the above-described action of the carbon fiber. When the content is 10% or more, the coated surface after drying is a rough surface with no gloss, and thus is in a state where foreign matter easily adheres and is easily stained. As a result, the painted surface loses its durability and tends to deteriorate due to weathering.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The architectural paint of the present embodiment is obtained by mixing finely cut carbon fibers at a content (volume ratio) of 5% or more and less than 10% into an acrylic rubber-based paint.

The acrylic rubber-based paint is a general paint mainly made of acrylic rubber. In the present embodiment, particularly, petroleum-based components are conservatively mixed to improve flame retardancy. I have.

[0010] The carbon fiber mixed into the acrylic rubber-based paint has a finely cut fibrous shape.
In the state of being mixed with the acrylic rubber-based paint, without clogging the spray gun for coating, with a fine length that can be sprayed by the spray gun, and entangled with the rubber-based paint, the carbon fibers can also be It is cut to the length of intertwining.

That is, the upper limit of the length of the carbon fiber varies depending on the diameter of the spray gun for coating. However, since the diameter of the spray gun is generally about 4 to 8 mm, it is about 4 mm or less. Is preferred. And the lower limit of the length of the carbon fiber is preferably longer than at least the diameter of the carbon fiber in order to entangle the carbon fibers, more preferably more than the outer peripheral length of the carbon fiber And

Next, an example of a coating structure using the architectural paint of the above embodiment will be described with reference to FIG. The coating structure A is configured by sequentially applying a primer coating 1, a first intermediate coating 2, a second intermediate coating 3, and a finishing coating 4 on a building surface b of a building made of plywood, reinforced concrete, or the like, The above-mentioned architectural paint is used for the second intermediate paint 3.

The undercoat 1 prevents the oxidative deterioration of the skeleton surface b by making the skeleton surface b of the building alkaline, and improves the adhesive strength of the first intermediate coating paint 2 to the skeleton surface b of the building, which will be described later. Preferably, an antioxidant having a composition of 16% of vinylidene chloride resin, 44% of an ester solvent and 40% of an aromatic hydrocarbon solvent in a volume ratio is used.

The first intermediate coating material 2 is a coating material containing acrylic rubber as a main component, and strongly adheres to the surface of the undercoating material 1 by its adhesive force.

The second intermediate coating material 3 is the above-mentioned architectural coating material, that is, an acrylic rubber-based coating material mixed with finely cut carbon fibers. Since it is a main component, it is strongly adhered to the surface of the first intermediate coating material 2. The second intermediate coating material 3 prevents the sagging during the painting operation and prevents the coating film after drying, since the carbon fibers are entangled with the acrylic rubber-based coating and mixed with the carbon fibers. Has also been strengthened. The second intermediate paint 3 protects the building surface b of the building for a long time without cracking due to its elasticity.

The finish paint 4 uses an acrylic paint in the paint structure A. However, since the carbon fiber contained in the second intermediate paint 3 is not dissolved by the oil paint, the waterproof property is particularly enhanced. In this case, it is preferable to use an oil-based urethane-based paint having relatively high waterproof performance.

The design of the coating surface in the coating structure A is not limited to the illustrated example. For example, the second intermediate coating material 3 is spray-painted, and the surface is pressed by a roller, for example. The finish can be a flattened portion, a citron skin-like finish, or the like.

Thus, the coating structure A having the above structure has strong tensile strength and excellent weather resistance and durability due to the action of the carbon fibers mixed into the second intermediate coating material 3.

The above-mentioned coating structure A shows a preferred use example of the architectural paint according to the present invention, and does not limit the usage of the architectural paint. For example, in the coating structure A, the second intermediate coating 3 may be applied directly to the surface of the undercoat 1 without providing the first intermediate coating 2, or a plurality of layers of the first intermediate coating 2 may be formed. You may do so.

[0020]

According to the present invention, by the action of carbon fibers mixed into the rubber-based paint, it is difficult to hang down, so that the coating operation is easy, and it is hard to cut, so that cracks due to temperature change hardly occur. Moreover, since it is difficult to burn, the fire protection of the building can be improved. Further, since the carbon fibers do not dissolve in the oil-based paint, a highly waterproof oil-based paint can be used as the finish paint applied to the outermost layer. Moreover,
Since carbon fiber has low water absorption, even if a relatively thin coating film is formed, it will be peeled off from the building frame by the water absorbed like the conventional paint mixed with perlite, or the building frame will be oxidized and deteriorated or corroded. I don't do that. Therefore, it is possible to provide an architectural paint having a relatively thin coating thickness and excellent coating properties such as weather resistance and durability. Furthermore, the unevenness of the painted surface is not limited to the granular shape by the granular pearlite as in the conventional paint mixed with the pearlite, and the degree of freedom of the wall surface design can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one usage example of a building paint according to the present invention.

[Explanation of symbols]

 1: Undercoat 2: First intermediate paint 3: Second intermediate paint (architectural paint) 4: Finish paint A: Paint structure b: Building frame surface

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) C09D 133/00 C09D 133/00 // B05D 7/00 B05D 7/00 L

Claims (3)

[Claims] 1. An architectural paint, which is a rubber-based paint containing finely cut carbon fibers. 2. The architectural coating according to claim 1, wherein the rubber coating is an acrylic rubber coating. 3. The content of the carbon fiber is 5% or more and 10% or more.
%. 3. The architectural coating according to claim 1, wherein the amount is less than 0.1%.