JPS63272856A - Conductive resin mortar floor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a conductive floor which is given a design by incorporating color flakes.

[Conventional technology]

Resin mortar used for the floors of buildings has become rapidly popular in recent years due to its advantages of faster curing time and shorter working time than the conventionally commonly used cement mortar system. However, floors made of resin mortar have high insulating properties because the skeletal binder is a polymer, so there are cases where static electricity damage occurs.
There is a problem in that it is more common than conventional cement mortar systems. Therefore, places where explosive gases are used, such as operating rooms, places where flammable or explosive substances are used, such as chemical factories and solvent storage facilities, and places where static electricity is generated, such as semiconductor manufacturing plants and IC assembly plants, must be avoided. In places where you don't like it,
There is a need for a resin mortar bed that is electrically conductive.

As the resin mortar bed, for example, JP-A-56-1592
73, JP-A-58-42670, and JP-A-59-98967 have been proposed.

Under these circumstances, the applicant filed a patent application in 1983 for a conductive resin mortar bed with excellent wear resistance and gloss.
It is proposed as No.-6049.

[Problems with conventional technology]

Conventionally proposed conductive beds use powders such as copper powder and graphite as conductive substances, and because the amount of these powders is large, the color tone of the resin mortar bed formed by the copper and graphite is different from that of the copper and graphite. As a result, there are problems in that, for example, it can only be colored black, or even if it can be colored in other colors, it is impossible to create pale tones, and it can only be colored in dark and dull tones.

[Problem that the invention seeks to solve]

The conductive resin mortar floor proposed in Patent Application No. 62-6049 filed by Ganto Motoyama improves this conventional drawback and provides a resin concrete floor with excellent color and conductivity. The inventors of the present invention have conducted further studies in order to provide a new type of conductive resin mortar bed that is not only conductive but also has excellent color and design.

[Summary of the invention]

As a result, they discovered that the above object could be achieved by using the following, and completed the present invention. That is,
According to the present invention, a primer layer (A) and a conductive layer (
B) are laminated in this order, and after the conductive layer is applied, color flakes are sprinkled thereon, and a top coat layer (C) is further laminated on top of this, a conductive resin mortar bed. is provided.

[Detailed description of the invention]

The structure of the isoelectric resin mortar bed of the present invention will be outlined based on FIG.

A primer layer (A) is provided on a base 1 on which a resin mortar bed is to be formed. This base may be formed of cement concrete or cement mortar, or may be another resin mortar bed that has already been formed.

The primer layer is the conductive layer Jffl (B
) is used to improve the adhesion between the substrate and the substrate, and is usually coated to a layer thickness of 0.2 to 0.6 mm. The surface electrical resistance value of this primer layer is usually 103~
It is in the range of 1014Ω. In the present invention, if necessary, coke powder with an average particle size of 5 to 300μ is added to the primer layer for 10 to 10 minutes.
There is no problem even if it is blended at 50wt%. In this case, the surface electrical resistance value of the layer can be lowered to 10 3 to 10 5 Ω to improve conductivity, which is preferable.

In the present invention, a conductive layer (B) is laminated on the primer layer (A), but in the present invention, an undercoat layer 2 may be provided between this conductive layer and the primer layer as necessary.

When an undercoat layer is provided, the layer thickness of this undercoat layer is usually 1 to 1.
5 mm, which is preferable because the impact resistance of the resin mortar bed improves when an undercoat layer is provided. Examples of materials constituting the undercoat layer include resin pastes of epoxy resins, unsaturated polyester resins, vinyl ester resins, and acrylic resins, resin mortar, and resin concrete. The surface electrical resistance value of the undercoat layer is usually 10' to 101
It is in the range of 4Ω. In the present invention, if necessary, the materials constituting the above-mentioned undercoat layer include, for example, acrylic resin, colorants such as silica sand and pigments, and carbon fibers of 5 to 15 mm in diameter.
When a conductive undercoat layer is formed by applying a mixture of 1 to 0.2vo1%, the surface electrical resistance value of the undercoat layer is 103
It is preferable that the conductivity can be improved by lowering it to 1O7.

The conductive layer (B) according to the present invention is made by using resin such as epoxy resin or acrylic resin as a binder, and adding coke powder to the binder.
Conductive powders such as metal powders such as cargin black, graphite, and copper powders, or conductive powders obtained by coating mica, titanium white, and various resin powders with conductive materials such as nickel and tin oxide, or carbon fibers. This layer contains conductive filler such as conductive fibers such as metal fibers and has conductivity. Furthermore, if necessary, pigments of various colors may be mixed with the binder in this conductive layer. The layer thickness of conductive jffl (B) is usually 0.1 to ln+m
The surface electrical resistance value of this material is usually 10°.
~10"Ω. In the present invention, in the conductive filler contained in the conductive layer, the average particle size of the conductive powder is usually 5 to 300μ, and the average diameter of the conductive fiber is usually 5 to 200μ. The average length of the fibers is usually 0.1 to 5 mm, and the conductive filler is usually mixed in an amount of 5 to 30% by volume.

In the present invention, a primer layer (A
) and a conductive layer (B) are laminated in this order, and in the present invention, color flakes are further sprinkled thereon after this conductive layer is applied. Specifically, the color flakes in this case include natural minerals such as mica, flakes of ceramics, metal oxides, metals, etc. colored in any color or pattern, synthetic resins, synthetic rubbers, etc. An example of this is colored flakes. More specifically, the color flakes include stone chips manufactured by Top Paint ■, chip colors manufactured by Daikyo ■, and Perstorp Buildi.
Pergino from ngResins (Sweden)
Examples include l. Usually, most of the flakes are insulating due to their material, but in the present invention, even colored flakes having both insulating and conductive properties can be used in the conductive resin mortar bed of the present invention. can. In addition, the size of the color flakes used in the present invention is usually 1 to 101 mm in diameter, and the thickness is 5 to 500 mm in diameter.
μ is preferable, but in the present invention, the shape, size, etc. are not limited to the above range as long as the color flakes are flaky.

In the present invention, the above-mentioned color flakes are sprinkled on the conductive layer (B) after it is applied. In this case, the method of dispersing the color flakes is to completely cover the top surface of the conductive layer with the color flakes, so that the top surface of the conductive layer is not covered with the color flakes, and some parts of the conductive layer are disordered here and there on the top surface of the laminate after the color flakes have been sprayed. It is performed as if the person is looking out at someone (see Figure 1).

In the conductive resin mortar bed according to the present invention, by dispersing color flakes as described above, the resin mortar bed is not only made conductive, but also has various properties that were not possible with conventional conductive resin mortar beds. The floor can be colored with color flakes. Therefore, since the conductive resin mortar floor of the present invention has excellent color design, the number of places where the conductive resin mortar floor can be applied, which until now has been used only in limited places from the viewpoint of design, can be expanded. To further explain the upper surface of the laminate sprinkled with color flakes according to the present invention, most of the upper surface of the applied conductive layer (B) in contact with the top coat layer (C) described below is covered with color flakes. However, in some places on the upper surface, parts of the conductive layer (B) are usually small irregularly shaped dots of a laminated layer that peek out from the upper surface to the extent that the design of the coloring with color flakes is not impaired. structure (see Figure 1). That is, if we look at the part that is in contact with the bottom surface of the top coat layer (C), this part is mostly made up of color flakes, so in the conductive resin mortar floor of the present invention, the color tone of the floor is the same as that of the color flakes. ruled by, and
A part of the conductive layer (B) sticks out from the gap between the color flakes and comes into contact with the bottom surface of the top coat layer (C), so even if the color flakes are non-conductive, they will not touch the floor. Static electricity generated on the top of the floor can pass through the top coat layer and escape to the conductive layer, thereby preventing the floor from being charged.

As mentioned above, the conductive layer contains a black conductive filler such as graphite, so it has a dull and dark color, but in the present invention, a layer is added on top of this conductive layer so as not to impair the conductivity. Since the four conductive layers are coated with color flakes painted in various colors, the dull dark tone of the conductive layer can be hidden, providing a conductive resin mortar bed with excellent design. Ru.

In the conductive resin mortar bed according to the present invention, color flakes are sprinkled on the applied conductive layer (B) as described above, and then a top coat i (C) is further laminated thereon. The conductive resin mortar bed is completed.

In this case, the top coat layer prevents the color flakes and the conductive layer peeking out from between the color flakes from being worn out, and also provides surface smoothness to maintain the gloss of the floor. It has the role of improving water quality and preventing stains. Top coat layer is 100-600g1
rd, preferably in the range of 200 to 400 g/of. As a result of this coating, the thickness of the top coat layer formed is usually 0.15 mm or less, and often 0.1 mm or less, as the top coat material impregnates the gaps between the color flakes. ing. Top coat J? Since J (C) is made into a thin layer in this way, even if a conductive substance is not added to the top coat layer, static electricity generated on the floor will pass through the top coat layer and reach the conductive layer and then the primer layer. If the base is cement concrete or cement mortar, it will flow directly to the base and prevent static electricity damage.Also, if the base is already an insulator such as another resin mortar floor, By providing a ground point in the primer layer, static electricity generated in the center of the floor can be transmitted through the low resistance primer layer and reach the ground point, allowing the electricity to escape without causing any harm to the human body. , because it quickly reaches the ground point, the number of ground points can be reduced, and the ground points can be gathered in inconspicuous places such as part of the floor corner.In addition, the ground points are covered with colored flakes sprinkled on the conductive layer. This makes it invisible and aesthetically pleasing.

In the present invention, commercially available primers and top coats can be used as they are. For example, as a primer for acrylic resin mortar, (a) a monomer of (meth)acrylic acid and/or its ester, (b) a polymer that can be dissolved or swelled in the monomer component, (c)
Some compositions are composed of a plasticizer dissolved in the monomer component and (d) a compound having at least two polymerizable unsaturated bonds in one molecule, and the top coat also basically consists of these compositions. The specific contents of these (a) to (d) are described in Japanese Patent Application Laid-Open No. 60-234359 by the applicant.

〔Effect of the invention〕

With conventional conductive resin mortar floors, the floor could only be colored black, and even if it could be colored in other colors, it was impossible to achieve a pale tone and only a concentrated or dull tone. In the 4-electroconductive resin mortar bed, color flakes selected from any color are used, and the conductive resin mortar bed is constructed with a specific laminated structure, without reducing the conductivity required to prevent the floor from charging. Since the conductive resin mortar bed can be colored not only in a light color but also in any color using color flakes, a conductive resin mortar bed with a highly colored design that has not been seen before is provided.

〔Example〕

The method of the present invention will be specifically explained below with reference to Examples.

Examples 1 to 4 Silica R51B containing coke powder was applied as a primer layer on the sidewalk board, and after curing, the reverted elementary fibers (average particle size 14
．． 4.4 g/rtr of silica R61SL containing 0.12 VOL% of 5μ, average length 6 mm) was applied and cured to form a conductive undercoat layer.

The surface resistance value of this undercoat layer was 1 to 7×10”Ω.Next, on top of this undercoat layer, Silica@R61B containing various conductive fillers shown in Table 1 was applied with a roller for 40 Ω.
A conductive layer was provided by applying 0 g/rrr.

Immediately after coating the conductive layer, 300 to 500 g/rrr of color flakes shown in Table 1 manufactured by Pers Top Co., Ltd. are sprinkled on the conductive layer, and then Silica 0R is further applied as a top coat layer on top of the conductive layer.
71 (Clear Top) was applied, and after curing, the surface was polished with #100 emery paper, and further Silical@R71 was applied to create a conductive resin mortar bed according to the present invention colored in the color flake combination color. did.

The surface resistance value of each layer when color flakes are sprinkled immediately after coating the conductive layer containing various conductive fillers as described above, and then one or two top coat layers are provided on top of this. was measured.

As a result, it was confirmed that even after the top coat layer was formed, it exhibited good conductivity, that is, a resistance value of 10 8 Ω or less. The results are shown in Table 1.

Table 1 (continued)

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the conductive resin mortar bed of the present invention. 1... Base layer 2... Undercoat layer A... Single layer of brimer B... Conductive layer 3... Color flake C... Top coat layer

Claims (1)

[Claims] (1) A primer layer (A) and a conductive layer (B) are laminated in this order on the base, and after the conductive layer is applied, color flakes are sprinkled on this, and a top coat layer (
A conductive resin mortar bed characterized by being laminated with C).