JP2007032092A - Electrification preventive painting floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrification preventive painting floor structure for reducing damage of a surface, easy in repairing when electrification preventive performance reduces, shortening a repairing period, and reducing cost, while maintaining the electrification preventive effect. <P>SOLUTION: This electrification preventive painting floor structure is formed by applying an electrification preventive painting floor material of upper-lower two layers on a floor base 20. A solventless epoxy resin-based electrification preventive painting floor material 10 is used as a lower layer side electrification preventive painting floor material, and an aqueous epoxy resin-based electrification preventive painting floor material 12 is used as an upper layer side electrification preventive painting floor material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an antistatic coating floor structure formed by applying an antistatic coating floor material on a floor base such as a production facility.

  In production facilities such as semiconductor manufacturing factories and precision instrument factories, floor materials having high and stable antistatic performance are required.

  Antistatic coating floor materials are known as such antistatic floor materials.

This antistatic coating material is made by mixing conductive powders such as carbon black and metal powder with carbon fiber or stainless steel fibers in binders for coating materials such as urethane resin and epoxy resin. Etc. are used (see Patent Document 1, conventional technology).
JP-A-6-2417

  Such antistatic coated flooring materials in production facilities are subject to wear and damage due to running of forklifts and carts in the facility, and the surface is easily scratched, and the antistatic performance is likely to deteriorate. It was.

  For example, in precision equipment factories where floor materials with antistatic performance are required due to the explosion-proof specifications, the fired ceramic powder spills onto the floor during the blending process, and the caster travels on the floor to damage the floor surface. In some cases, the antistatic performance is impaired.

  Therefore, it is necessary to repair the antistatic coating floor material. To repair the antistatic coating floor material, it is necessary to remove the damaged antistatic coating floor material and then apply it again. And spend the cost.

  The object of the present invention is to reduce the damage to the surface while maintaining the antistatic effect, and to easily perform repair when the antistatic performance is reduced, thereby reducing the repair period and reducing the cost. It is to provide a painted floor structure.

In order to achieve the above object, the antistatic coating floor structure of the present invention is an antistatic coating floor structure in which at least a lower layer side and an upper layer side antistatic coating floor material are applied on a floor base to form a plurality of layers.
As the lower layer side antistatic coating flooring, a solventless epoxy resin-based antistatic coating flooring is used,
A water-based epoxy resin-based antistatic coating floor material is used as the upper layer side antistatic coating floor material.

  According to the present invention, the solvent-free epoxy resin-based antistatic coating flooring has an antistatic effect, but the wear resistance is not so high. Property and antistatic effect are high.

  Therefore, by placing the water-based epoxy resin-based antistatic coating flooring on the upper layer side and the solvent-free epoxy resin-based antistatic coating flooring on the lower layer side, the water-based epoxy resin-based antistatic coating flooring wears away. When the antistatic performance of the water-based epoxy resin-based antistatic coating flooring is reduced, the solvent-free epoxy resin-based antistatic coating flooring becomes a water-based epoxy resin. The antistatic coating flooring can be backed up to maintain the antistatic effect, and as a result, the antistatic effect and wear resistance can be ensured.

  In addition, water-based epoxy resin-based antistatic coating floor materials can be easily repaired by recoating them on a damaged water-based epoxy resin-based antistatic coating floor material, and the repair period and cost can be reduced. Can do.

  In addition, solvent-free epoxy resin-based antistatic coating materials and water-based epoxy resin-based antistatic coating materials do not contain formaldehyde, VOC (organic volatile compounds), etc., which may adversely affect the environment and human health. There is no.

  In the present invention, an intermediate layer using an aqueous conductive primer can be provided between the lower layer side antistatic coating floor material and the upper layer side antistatic coating floor material.

  By setting it as such a structure, an antistatic effect can be heightened more by using an aqueous | water-based conductive primer with a high antistatic effect for an intermediate | middle layer.

  Also in this case, since it does not contain formaldehyde or VOC (organic volatile compound), it does not adversely affect the environment and human health.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a sectional view showing an antistatic coating floor structure according to an embodiment of the present invention.

  This antistatic coating floor structure is formed by applying upper and lower antistatic coating floor materials on the floor base 20 to form two layers. As a lower layer antistatic coating floor material, a solventless epoxy resin-based antistatic agent is used. The coating floor material 10 is used, and the water-based epoxy resin-based antistatic coating floor material 12 is used as the upper layer side antistatic coating floor material.

  This solventless epoxy resin-based antistatic coating flooring 10 has an antistatic effect, but is not so high in wear resistance.

  Further, the water-based epoxy resin-based antistatic coating flooring 12 has high wear resistance and antistatic effect.

  Then, the upper layer side water-based epoxy resin-based antistatic coating flooring 12 has wear resistance to reduce surface damage, and the lower layer side solvent-free epoxy resin-based antistatic coating flooring 10 When the antistatic effect of the water-based epoxy resin-based antistatic coating flooring 12 is lowered, the antistatic effect of the water-based epoxy resin-based antistatic coating flooring 12 is backed up to maintain the antistatic effect. .

  As a result, an antistatic coated floor structure that ensures an antistatic effect and wear resistance is formed.

  The coating thicknesses of the solventless epoxy resin-based antistatic coating floor material 10 and the water-based epoxy resin-based antistatic coating floor material 12 are set to 0.8 to 4 mm, respectively.

  The construction of the solventless epoxy resin-based antistatic coating flooring 10 and the water-based epoxy resin-based antistatic coating flooring 12 was performed by applying the solventless epoxy resin-based antistatic coating flooring 10 to the floor base 20 and curing it. Thereafter, the water-based epoxy resin-based antistatic coating floor 12 may be applied, or the solventless epoxy resin-based antistatic coating floor 10 and the water-based epoxy resin-based antistatic coating floor 12 are laminated. May be applied simultaneously.

  In addition, the water-based epoxy resin-based antistatic coating flooring 12 can be easily repaired by recoating it on the surface of the damaged water-based epoxy resin-based antistatic coating flooring, thereby shortening the repair period and reducing the cost. Can be obtained.

  The coating thickness at the time of repair is 0.8 to 4 mm.

  Furthermore, since the solventless epoxy resin-based antistatic coating floor material 10 and the water-based epoxy resin-based antistatic coating floor material 12 do not contain formaldehyde, VOC (organic volatile compounds), etc., they have an adverse effect on the environment and human health. And a good antistatic coating floor structure is obtained.

  FIG. 2 is a sectional view showing an antistatic coating floor structure according to another embodiment of the present invention.

  In this embodiment, a solventless epoxy resin-based antistatic coating floor material 10 which is the lower layer side antistatic coating floor material in the embodiment of FIG. 1 and an aqueous epoxy resin system which is the upper layer side antistatic coating floor material. A water-based conductive primer 14 is disposed as an intermediate layer between the antistatic coating floor material 12 and has three layers.

  This water-based conductive primer 14 has a high antistatic effect. By using the water-based conductive primer 14 having such a high antistatic effect as an intermediate layer, only the solventless epoxy resin-based antistatic coating flooring 10 is used. The antistatic effect can be enhanced as compared with the case where the water-based epoxy resin-based antistatic coating floor 12 is used as a backup.

  Also in this case, since the aqueous conductive primer 14 does not contain formaldehyde, VOC (organic volatile compound) or the like, it does not adversely affect the environment and human health.

  Other configurations and operations are the same as those in the above embodiment.

  Next, the result of the antistatic performance experiment of the antistatic coating floor material will be described.

[Target of experiment]
As shown in FIG. 3, the lower layer (undercoat) is a solvent-free epoxy resin-based and the upper layer (overcoat) is an aqueous epoxy resin-based two-layer antistatic coating floor material (corresponding to the embodiment of FIG. 1), the lower layer (Undercoat) is a water-based epoxy resin base and the upper layer (overcoat) is a solventless epoxy resin-based two-layer antistatic coating floor material, the lower layer (undercoat) is a solventless epoxy resin base and the upper layer (overcoat) is solvent-based Epoxy resin-based two-layer antistatic coating flooring, water-based epoxy resin-based one-layer antistatic coating flooring, solvent-free epoxy resin-based one-layer antistatic coating flooring, solvent-type epoxy resin-based one-layer coating Experiments were conducted on seven types of antistatic coating floor materials, an antistatic coating floor material and a vinyl ester resin-based single layer antistatic coating floor material.

  The test body used had a dimension of 300 mm × 300 mm, and the above-mentioned seven types of antistatic coating floor materials were applied to the surface of the flexible plate with a predetermined thickness.

[experimental method]
Accelerated caster test The running operation of the caster was simulated by a caster tester according to DIN 54324 (floor material fatigue test).

  Specifically, 40 g of ceramic powder was uniformly applied on the test body fixed to the turntable, and the disk on which the caster was attached was set on the test body.

  Further, a weight was placed on the disk, the total load was fixed at 120 kg, and the turntable was rotated at a speed of 14 cycles / min.

  Note that the test was performed in a room at 20 ° C. and 65% RH.

  The antistatic performance was evaluated by measuring the electric surface resistance after removing the ceramic powder after a predetermined cycle.

[Experimental result]
The change in electrical surface resistance after the caster test is shown in FIG.

  The type of the antistatic coating floor material is indicated by the symbol shown on the left side of each antistatic coating floor material in FIG.

In an antistatic floor of a precision equipment factory, a resistance of 10 ⁵ Ω or more and less than 10 ⁹ Ω is usually required as shown by a thick line in FIG.

As a result of the experiment, the antistatic coating floor material in which the lower layer is a water-based epoxy resin system and the upper layer is a solventless epoxy resin system and the vinyl ester resin type antistatic coating floor material has a high resistance exceeding 10 ⁹ Ω immediately after the start of the test. The value is shown.

The lower layer is a solventless epoxy resin-based, the upper layer is a solvent-based epoxy resin-based antistatic coating floor material, the solventless epoxy resin-based antistatic coating floor material and the solvent-type epoxy resin-based antistatic coating floor material are 1000 The resistance value increased up to 10 ⁹ Ω before and after the cycle.

The resistance value of the water-based epoxy resin-based antistatic coating floor material increased to about 10 ⁹ Ω before and after 1500 cycles.

The antistatic coating floor material (corresponding to the embodiment shown in FIG. 1) whose lower layer is a solvent-free epoxy resin system and whose upper layer is a water-based epoxy resin system maintains the control standard value up to 2000 cycles, and is about 10 ¹⁰ even at 5000 cycles. The resistance value was shown.

  Thus, it was found that the antistatic coating floor material (corresponding to the embodiment shown in FIG. 1) having a solvent-free epoxy resin system in the lower layer and an aqueous epoxy resin system in the upper layer exhibits good antistatic performance. did.

  The present invention is not limited to the above-described embodiment, and can be modified into various forms within the scope of the gist of the present invention.

  For example, in the above-described embodiment, the antistatic coating floor structure having two layers and three layers has been described. However, the present invention is not limited to these embodiments, and the lower layer is a solvent-free epoxy resin system and the upper layer is an aqueous epoxy resin system. If it is an antistatic coating floor material, it is possible to have four or more layers.

It is sectional drawing which shows the antistatic coating floor structure concerning one embodiment of this invention. It is sectional drawing which shows the antistatic coating floor structure concerning other embodiment of this invention. It is a figure which shows a test object. It is a figure which shows the change of the electrical surface resistance after a caster test.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Solvent-free epoxy resin type antistatic coating floor material 12 Aqueous type epoxy resin type antistatic coating floor material 14 Aqueous type conductive primer 20 Floor base

Claims (2)

An antistatic coating floor structure in which at least a lower layer side and an upper layer side antistatic coating floor material are applied on a floor base to form a plurality of layers,
As the lower layer side antistatic coating flooring, a solventless epoxy resin-based antistatic coating flooring is used,
A water-based epoxy resin-based antistatic coating floor material is used as the upper layer side antistatic coating floor material. In claim 1,
An antistatic coating floor structure comprising an intermediate layer using an aqueous conductive primer between the lower layer side antistatic coating floor material and the upper layer side antistatic coating floor material.

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