JPH091725A - Working method for finish layer - Google Patents

Abstract

PURPOSE: To make it possible to apply the method in execution of works for objects, wherein aggregates are uniformly dispersed all the time and workability is good and wide, by applying the mixture formed by mixing the specified weight parts of a hardening liquid material and plant aggregate on a base material, hardening the mixture and providing excellent vehicle running durability. CONSTITUTION: The mixture, which is formed by mixing 100 pts.wt. hardening liquid material and 1-100 pts.wt. plant aggregate, is applied on a base material and hardened. As the plant aggregate, the crushed material of wallnut shells is used especially recommendably from the standpoints of hardness and specific gravity. As the hardening liquid material, the solution of a urethane resin, an epoxy resin or an unsaturated polyester resin is used. When the mixture of the hardening liquid material and the plant aggregate is applied on the base material, blowing application is performed by a roller applying method, a texture gun, Zola coat or the like. This working method is especially suitable when the surface is finished into the irregular surface after the finish layer is worked with a synthetic-resin-based floor material, synthetic-resin-based waterproof material or the like.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention is applicable to general walkways such as condominiums and schools, rooftop parking lots, bicycle parking lots, amusement parks, factory floors,
The present invention relates to a method of applying a finishing layer containing aggregate in a coated floor material, a waterproof material, and a pavement material for applications requiring non-slip properties and vehicle running durability, which are used in fields such as warehouses.

[0002]

2. Description of the Related Art Conventionally, inorganic materials such as silica sand, silica sand, and ceramic beads have been widely used as aggregates used in the above fields, and silica sand is most widely used among them. In addition, as a method of applying the finishing layer containing this aggregate, a urethane flooring material or an epoxy flooring material is applied and a required amount of aggregated material is sprayed, or a flooring material is applied and an excessive amount of aggregated material is applied on it. After the floor material is hardened, the aggregate that has not adhered to the cured product is removed and the floor material is applied again.

However, in the former method, even if it is attempted to sprinkle aggregate on the whole, it is difficult to scatter it evenly, and it is difficult to finish it on a uniform uneven surface. Further, in rooftop construction, particularly in strong winds, it is difficult to spray the aggregate at any place even if a sprayer such as a blower is used. The latter method involves the inconvenience of disposing of excess aggregate after curing, a great deal of effort is required to remove and dispose of the excess aggregate after curing, and an additional floor covering must be applied to secure the aggregate. There is also.

Therefore, a method of applying a mixture prepared by previously kneading silica sand to the floor material with a roller or the like can be considered. However, since the specific gravity of the silica sand is much larger than that of the floor material, the sedimentation in the container or the application is difficult. The silica sand has poor diffusion fluidity, and it is difficult to obtain a uniform uneven surface.

[0005]

The construction objects of buildings used for purposes such as parking lots generally have a large area such as 2000 m ² or more. The larger the area of construction, the more difficult it was for the aesthetics of the surface finish and workability.

[0006]

The present invention is the following invention which has solved the above-mentioned problems. That is, it is a method of applying a finishing layer having an uneven surface characterized by applying a mixture prepared by mixing 100 parts by weight of a curable liquid material and 1 to 100 parts by weight of a vegetable aggregate to a substrate and curing the mixture. .

The plant-based aggregates used in the present invention include acorn shells such as acorns, pistachios and walnuts, crushed products thereof, oaks, and sawdust of twigs. Among them, crushed walnut shells (hereinafter referred to as walnut powder) are particularly preferable in terms of hardness and specific gravity.

The particle size of the plant aggregate is not particularly limited, and the average particle size is preferably 0.2 mm to 1.0 mm.
If the particle size is too large, the non-slip property during walking or running of the vehicle is improved, but it is difficult to uniformly apply the raw material for the finishing layer, and tire marks and heel marks of shoes due to running of the vehicle tend to adhere, which is not preferable. On the contrary, if the particle size is too small, the non-slip property becomes insufficient. By the construction method of the present invention, an uneven surface due to the particle size of the plant aggregate, such as an average particle size of 0.2 mm to 1.0 mm, can be obtained.

The plant aggregate has a smaller specific gravity than inorganic materials such as silica sand, silica, sand and ceramic beads, and has a specific gravity similar to that of a curable liquid material. Therefore, it does not float even in the liquid and is unlikely to settle, which is convenient for application work. Particularly, the specific gravity is preferably about 1.1 to 1.3.

The viscosity of the curable liquid used in the present invention (20
The suitable temperature is 50 to 500 cP. If the viscosity is within this range, even if the vegetable aggregate is mixed, there is no significant increase in viscosity as compared with the curable liquid itself, so that the coating workability is not hindered and the uneven surface can be finished uniformly. . If necessary, a solvent may be added for adjustment.

The mixing ratio of the curable liquid material to the vegetable aggregate is 100 to 100 parts by weight of the curable liquid material.
Parts by weight. If the amount of vegetable aggregate exceeds 100 parts by weight, the viscosity tends to increase, the application work with a roller feels heavy, and a uniform uneven surface is unlikely to appear. If the amount is less than 1 part by weight, the amount of the aggregate is too small to sufficiently develop the uneven surface of the coated surface.

The curable liquid material used in the present invention is preferably a raw material composition or solution of a urethane resin, an epoxy resin or an unsaturated polyester resin, and particularly preferably a raw material composition or solution of a urethane resin. Waterproof material, floor material,
Those used as paving materials and top coat paints are preferable.

The urethane waterproof material is preferably a urethane waterproof material having a performance that passes the JIS A6021 urethane rubber type 1 class standard for roof coating film waterproof material.

As the urethane flooring material, a coating resin used for ordinary flooring materials can be applied. If the strength is insufficient, the aggregate may be chipped off or the resin itself may be cracked or chipped due to running of the vehicle. So hardness JIS A 75 or higher, tensile strength 7
A material having 0 kg / cm ² or more is desirable. Other acrylic rubber materials and rubber asphalt materials can be used.

When the mixture of the curable liquid substance and the vegetable aggregate is applied to the substrate, a method of applying with a roller or a method of spraying with a resin gun or Zola coat can be adopted.

The method for applying the finishing layer of the present invention can be used as a method for finishing the surface to have an uneven surface in the construction of floors, roofs or roads. The finishing layer in the present invention is a particularly suitable construction method when it is desired to finish the surface to have an uneven surface after construction with a synthetic resin floor material or a synthetic resin waterproof material.
A top coat may be further applied on the finishing layer in the present invention.

The surface of the floor, roof or road constructed by the construction method of the present invention has an uneven surface, so that it is excellent in non-slip properties and running durability of the vehicle. It is especially suitable for general walkways such as condominiums and schools, rooftop parking lots, bicycle parking lots, amusement parks, factory floors and warehouses.

[0018]

EXAMPLES The present invention will be specifically described below with reference to Examples (Examples 1 to 3) and Comparative Examples (Examples 4 to 7), but the present invention is not limited thereto.

(Example 1) A urethane-based one-component type primer 0.25 kg / m ² was applied to a concrete panel, and a urethane-based two-component flooring material 2.0 kg / m ² was applied thereon to form a urethane underlayer. Obtained.

As the finishing layer, 10 parts of acrylic urethane type two-component top coat and walnut powder having an average particle size of 0.3 mm are used.
The slurry mixture formed by kneading at a ratio of 0: 4 (weight ratio) was applied by a roller so that the amount of the top coat was 0.25 kg / m ² , to obtain a urethane coating layer having a uniform uneven surface. It was

(Example 2) On the same urethane underlayer as in Example 1, 100: 5 (weight ratio) of a solvent-diluted, urethane-based, two-component, thin-coating floor material as a finishing layer and walnut powder having an average particle size of 0.4 mm. The slurry-like mixture obtained by kneading was coated with a roller so that the amount of the thin coating floor material was 0.3 kg / m ² . Finally, the same acrylic urethane type two-pack top coat as in Example 1 was applied at 0.2 kg / m ² to obtain a urethane coating layer having an uneven surface.

(Example 3) The same urethane-based one-component primer 0.25 kg / cm ² as in Example 1 was applied to a concrete panel, and a urethane-based two-component waterproofing material was applied on the concrete panel in an amount of 2.0 kg / cm ^2.
m ² applied and urethane-based 2-component flooring material on it 2.0 k
g / m ^{2 was} laminated to obtain a urethane underlayer.

As a finishing layer, a solvent-diluted, urethane-based, two-pack type thin coating flooring material and 1 walnut powder having an average particle size of 0.5 mm are used.
The slurry mixture prepared by kneading at a ratio of 0: 2 (weight ratio) has a diameter of 3 mm so that the amount of the thin coating floor material becomes 0.4 kg / m ^2.
Was sprayed with an air pressure of 3 kg / cm ² . Finally, an acrylic urethane-based two-component top coat was applied at 0.2 kg / m ² to obtain a urethane coating layer having a uniformly uneven surface.

(Example 4) A solvent-diluted, urethane-based, two-component, thin-coating flooring material was used as a finishing layer on the same base layer as in Example 1 in an amount of 0.3.
kg / m ² was applied, were sprayed with 0. 045kg / m ² such that a uniform silica sand No. 6 immediately. After the thin coating floor material was cured, an acrylic urethane-based two-pack top coat was finally applied at 0.2 kg / m ² to obtain a urethane coating film layer having an uneven surface with scattered unevenness on the surface.

(Example 5) A solvent-diluted, urethane-based, two-component, thin-coating flooring material was used as a finishing layer on the same base layer as in Example 1 in an amount of 0.3.
Immediately after the application of kg / m ² , silica sand No. 6 was sprinkled with an excessive amount of 1.0 kg / m ² so as to be uniform.

After the thin-coated floor material was cured, the silica sand that had not adhered was removed, and 0.3 kg / m ^{2 of the} thin-coated floor material was further applied to fix the silica sand. When removing sand, it was extremely difficult to sweep it with a broom because the ground was a rough uneven surface, and the application of floor material for fixing silica sand increased by one step.

Finally, an acrylic urethane type two-pack top coat was applied at 0.2 kg / m ² . Although the surface layer had no scattering of sand, a large amount of labor was required to remove this silica sand in the case of construction over a large area.

(Example 6) The same underlayer as in Example 1 was kneaded with a solvent-diluted urethane-based two-component thin coating floor material as a finishing layer and silica sand No. 6 at a ratio of 100: 5 (weight ratio), and this slurry was prepared. The mixture was applied with a roller so that the floor coating material would be 0.3 kg / m ² .

The slurry-like mixture was put in a square can container, and the roller was dipped and adhered and applied. However, the sand immediately settled in the square can container and the sand did not evenly adhere to the roller. As a result, the amount of aggregate was too small and sufficient uneven surface could not be developed.

(Example 7) The same base layer as in Example 1 was kneaded with a solvent-diluted urethane-based two-component thin coating floor material and silica sand No. 6 as a finishing layer at a ratio of 100: 5 (weight ratio), and this slurry was prepared. The mixture was applied with a roller so that the floor coating material would be 0.3 kg / m ² .

The slurry-like mixture was stirred so that the sand would not settle, poured onto the coating surface, spread with a roller and coated uniformly. However, the silica sand did not spread evenly, and there was a lot of sand in the part where the slurry mixture flowed, and there was little unevenness in the part spread by the roller, resulting in an uneven surface.

[Evaluation] <Coating workability> The time required to apply 1 m ² of the finishing layer for fixing the aggregate was experimentally calculated.

<Appearance of surface layer> The uniformity of surface irregularities of the finished surface layer was visually observed and evaluated. If unevenness is uniform, ○,
If the unevenness was not uniform, it was evaluated as x.

<Slip resistance coefficient> The slip resistance coefficient was measured according to JIS A1407. DRY is a dry state and WET is a flooded state. Generally, it is said that it is slippery above 0.4.

<Driving durability of the vehicle> A urethane coating layer-covered concrete panel is fixed to each road, and a forklift with a vehicle weight of 3.7 tons makes a sudden start on the coating surface and repeats steering wheel turning 20 times. Then, the durability of the coating films was compared.

[0036]

[Table 1]

[0037]

Industrial Applicability According to the present invention, it is possible to provide a surface having a uniform uneven surface containing an aggregate for applications requiring non-slip properties. It is also excellent in running durability of the vehicle, and in the coating system that is a composite of aggregate and resin, the aggregate is always dispersed uniformly, and the workability is good, and it can be applied to the construction of a wide property.

Claims (7)

[Claims] 1. Construction of a finishing layer having an uneven surface, characterized in that a mixture comprising 100 parts by weight of a curable liquid material and 1 to 100 parts by weight of a vegetable aggregate is applied to a base material and cured. Law. 2. The construction method according to claim 1, wherein the plant aggregate is a crushed product of walnut shells. 3. The curable liquid material is a raw material composition of urethane resin, epoxy resin or unsaturated polyester resin,
The construction method according to claim 1. 4. The method according to claim 1, wherein the curable liquid material is a solution of urethane resin, epoxy resin or unsaturated polyester resin. 5. The construction method according to claim 1, wherein a roller is used when the mixture of the curable liquid material and the vegetable aggregate is applied to the substrate. 6. The method according to claim 1, wherein when the mixture of the curable liquid material and the vegetable aggregate is applied to the base material, spraying is performed with a resin gun, Zola coat or the like. 7. A surface having an uneven surface on a floor, roof or road constructed by the construction method according to any one of claims 1 to 6.