JP4613450B2 - Hydrophilic washing place - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing place having a hydrophilic surface.
[0002]
[Prior art]
For example, a conventional washing place has a surface having an anti-slip texture as it is formed by SMC or casting of unsaturated polyester resin, or in a washing place by the hand lay-up method, a gel coat is applied to the mold. Then, the FRP is constituted by a hand lay-up method or a spray-up method, and is removed from the mold and has a gel coat layer on the surface. In addition, there is a washing place having a surface that is made non-slip by coloring and unevenness of beads by applying a coating containing resin beads on the surface of the shaped washing place.
[0003]
[Problems to be solved by the invention]
However, the surface of the molded body by SMC or casting shows a contact angle of about 75 °, and the hot water or water on the washing place is a puddle with a diameter exceeding 20 mm even if a slight inclination for draining is provided. It remained and it was difficult to drain completely. Furthermore, since the surface of the washing place is provided with a grain to prevent slipping, the amount of accumulated water was further increased.
[0004]
In addition, even in a washing place where a paint with resin beads added is applied, the contact angle of the paint resin is about 80 °, and the resin beads form irregularities on the surface to prevent slipping. As a result, the flow of water was hindered, and the water tends to accumulate more easily than the washing place with a grain.
[0005]
These accumulated water forms a thick water film due to surface tension, so it often does not dry and remains until the next day, increasing the humidity in the bathroom to promote the generation of mold, and leaving hard-to-drop scales. Or, when washing the bathtub, the problem of leaving the feet wet and making them feel cold was left.
[0006]
[Means for Solving the Problems]
The above problem has been solved by making the surface of the washing place hydrophilic. In other words, by setting the washing area to a hydrophilic surface, it is possible to obtain a washing area where there is no partial accumulation of water and drying is fast. In addition, in order to make the surface of the molded washing place hydrophilic, the washing place includes a step of applying a hydrophilic paint. This makes it possible to easily impart hydrophilicity to the surface of the washing area that has been molded, and by adding resin beads to the paint and painting it, it can exhibit the performance of being slippery even when wet with water or hot water during bathing You can get a washing place.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
This onset Ming is to a washing place surface was contact angle 35 ° or less hydrophilic water in order to eliminate the pool of water. When the contact angle was 35 ° or less, the water spread as a thin film on the surface of the washing place and did not create a large pool of water.
[0008]
Further, the present invention is a washing place having hydrophilicity obtained by applying a paint capable of exhibiting hydrophilicity to a molded washing place surface using an acrylic urethane-based paint containing silica particles as a hydrophilizing agent , By making the surface only hydrophilic using a paint, it is possible to easily make it hydrophilic, and it is also possible to easily color the wash area.
[0009]
Furthermore, the present invention adds a methyl methacrylate resin bead having a particle diameter larger than the coating thickness to a paint exhibiting hydrophilicity, so that the methyl methacrylate resin bead protrudes from the coating surface. Unevenness is formed on the surface. Therefore, even when the surface of the washing place is wet, it is possible to provide a hydrophilic washing place where the bather does not slip.
[0010]
【Example】
An embodiment of the present invention will be described below with reference to the drawings.
[0011]
FIG. 1 shows a partial cross-sectional view of a washing place to which the hydrophilic coating of the present invention is applied. The base material 1 is a layer obtained by press-molding an SMC material comprising an unsaturated polyester resin and glass fiber, an inorganic filler and a coloring material by a known method. In the washing area molding, molding was performed without using a release agent, and degreasing treatment with a solvent was performed before coating.
[0012]
The pattern coating film 2 was configured by providing a pattern coating process by spraying the paint A into particles. The pattern coating is sparsely applied on the surface so that the size of the coated particles is about 10 mm or less, and the color (a) of the SMC substrate 1 and the color of the pattern coating film 2 ( It painted so that both b) could be seen. A drying step for curing the pattern coating film 2 was provided by leaving the pattern-washed washing place in an oven at 80 ° C. for 60 minutes.
[0013]
Next, the washing place is taken out from the drying furnace, cooled at room temperature, and then mixed with 7: 3 resin beads 3 having an average diameter of 20 μm and 40 μm in a translucent hydrophilic paint containing silica particles as an acrylic urethane-based hydrophilizing agent. 8% was added and dispersed to form paint B, and a coating step was provided. Here, methyl methacrylate resin beads were used as the resin beads 3. Then, the drying step which hardens an acrylic urethane type translucent hydrophilic coating was provided by leaving the painted washing place in an 80 degreeC drying furnace for 60 minutes. Thereafter, by cooling, a patterned hydrophilic washing place having a translucent hydrophilic coating film 4 having an average coating film thickness of 20 μm on the surface was obtained.
[0014]
The hydrophilic washing place thus obtained is obtained by coating a washing place made of FRP which is formed from a general-purpose SMC material at a high temperature and high pressure using a mold, and has a hydrophilicity with a water contact angle of 26 °. I had it. When water was allowed to flow through the washing place, the water spread on the surface of the washing place without forming a ball despite the numerous irregularities caused by the resin beads 3, and a thin water film was formed. If left as it is, most of the water gathered at the drain outlet due to the gradient of the washing area and was discharged. At that time, a very thin film of water remained on the surface of the washroom regardless of the gradient. Since this film was very thin, it was evaporated and dried in a short time. In the case of a hydrophilic surface, the surface area is significantly increased by spreading thinly and widely with respect to the amount of water remaining on the surface, and the amount of evaporation can be earned. Therefore, since the humidity in the bathroom is kept low, generation of mold can be prevented.
[0015]
The acrylic urethane paint used here contains silica fine particles as a hydrophilizing agent, and other hydrophilizing agents include silica gel fine particles, metal oxide fine particles such as titanium oxide, tin oxide and zinc oxide, hydroxyl groups and alkoxy groups. It may be a polymer organic compound having an ionic property such as a carboxyl group or a sulfone group.
[0016]
Here, a semi-transparent hydrophilic paint was used, but the color (b) of the pattern coating film 2 can be seen through the hydrophilic coating film 4 and is excellent in design as compared with the color (a) of the substrate 1. I was able to. Moreover, since the color of the pattern coating film 2 and the base material 1 can be seen more clearly if it is a transparent hydrophilic paint, a washing place having a sharp feeling in design can be obtained. In order to obtain a transparent hydrophilic paint, silica fine particles having a light refractive index close to that of the paint resin may be used as a hydrophilic agent.
[0017]
On the other hand, a hydrophilic washing place coated with a hydrophilic paint to which resin beads have not been added covers the entire surface of the surface without being cut off, for example, when water or hot water is constantly flowing in a bath. As a result, the bather was slippery even if the surface was provided with a texture. However, in this embodiment, by adding the resin beads 3 to the hydrophilic paint, an excellent hydrophilic washing place that can satisfy the performance such as the sliding property and the wear resistance as a washing place without impairing the hydrophilic performance. I was able to. That is, in a general acrylic urethane-based paint, the contact angle of water is about 80 °, and when methyl methacrylate resin beads having the same contact angle are added therein, the resin beads that show outcrop from the coating film are about 80 ° C. The uneven surface has a substantially uniform contact angle of °, and the shape effect causes the water to form a thick large pool and stay without flowing. However, when methyl methacrylate resin beads are added to a hydrophilic paint having a contact angle of 26 °, a non-uniform surface is obtained at the contact angle. In this so-called hydrophilic sea, islands with a contact angle of 80 ° are exposed in some places. However, the water is led to the hydrophilic sea and spreads over the resin bead island, and when the water layer becomes extremely thin, the water is cut off from the resin bead island. Then it still spreads wet. In addition, since the methyl methacrylate resin beads protrude from the coating film and expose the outcrop, the feet of the bath chair and the bottom of the basin do not rub the coating film directly, so the wear resistance should be excellent. I was able to.
[0018]
As described above, even when resin beads were added to the hydrophilic paint, it was possible to improve the slipperiness and wear resistance as a coating film without impairing the hydrophilic performance.
[0019]
【The invention's effect】
According to the onset bright As apparent from the above description, the pool of water on the surface is eliminated by the surface of the washing place molded hydrophilic, by shortening the drying time, by reducing the humidity in the bathroom Prevention of mold.
[0020]
In addition, according to the present invention, a hydrophilic washing place can be easily configured by applying a hydrophilic coating to the surface of the molded washing place using an acrylic urethane-based paint containing silica particles as a hydrophilizing agent , The surface can be colored and patterned by painting.
[0021]
Furthermore, according to the present invention, by including methyl methacrylate resin beads having a particle diameter larger than the coating thickness in the coating film of the hydrophilic coating, the wear resistance is improved without impairing the hydrophilic property, and it is difficult to slip. It can be a wash surface.
[Brief description of the drawings]
FIG. 1 is a partial sectional view of a washing place of the present invention.
DESCRIPTION OF SYMBOLS 1 Base material 2 Pattern coating film 3 Resin bead 4 Hydrophilic coating film (a) Color of base material (b) Color of pattern coating film

Claims (1)

A hydrophilic wash place with a non-slip surface, which is made of a hydrophilic paint composed of acrylic urethane-based paint containing silica particles as a hydrophilizing agent and a methyl methacrylate resin bead on the surface of the molded wash place. Is a hydrophilic washing place that has a particle size larger than the coating thickness in the coating film of hydrophilic coating .

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