KR100716712B1 - Anti-static proof tile - Google Patents

Abstract

The present invention relates to an antistatic tile, and an object of the present invention is to provide an antistatic tile that is excellent in surface electrical resistance and volumetric electrical resistance, can prevent shrinkage expansion of a tile, and can also increase surface strength. do.

The present invention provides a phenolic resin layer, a shape sheet laminated on the bottom surface of the phenolic resin layer, a first conductive layer attached to the bottom surface of the shape sheet, a body layer laminated on the bottom surface of the conductive layer and preventing tile shrinkage expansion, and a bottom surface of the body layer. It comprises a second conductive layer attached to the.

Antistatic Tile, Phenolic Resin Layer, First Conductive Layer, Second Conductive Layer

Description

Antistatic Tiles {ANTI-STATIC PROOF TILE}

1 is a perspective view of the combination of the present invention.

2 is an exploded perspective view of the present invention.

* Description of the major symbols in the drawings *

10: phenolic resin layer 20: shape sheet

30: first conductive layer 40: main body

50: second conductive layer

The present invention relates to an antistatic tile, the present invention is installed on the floor of the production and assembly lines of semiconductors and other electrical and electronic products, floors of laboratories, clean rooms, hospital surgery rooms, etc., floors of offices that are concerned about the effects of harmful electromagnetic waves, Used to absorb or bypass.

Conventionally, many antistatic tiles (also called "mats" or "sheets", hereinafter simply called "tiles") have been provided.

However, in the conventional antistatic tile, the tile body was impregnated with a surfactant or carbon, but in the case of the tile impregnated with the surfactant, the problem is that the surfactant is bred, and in the case of the tile impregnated with carbon, There is a problem of polluting the object.

In order to overcome this problem, the applicant's patent No. 0367885 has been registered and published, this patent is "synthetic resin tile body, the color printing film is provided and laminated on the tile body upper, the color printing film is provided on the lamination In the synthetic resin tile composed of a transparent film, the lower part of the tile body having a carbon film having a thickness thinner than the tile body "as a" breathing phenomenon and surface contamination occurring when the antistatic and surfactant impregnated Can be prevented,

In this patent, the same tile body, transparent film, and color film are all made of the same synthetic resin material, which is suitable for producing soft tiles. However, there is a difficult problem in producing hard tiles.

Can if attenuation of static electricity due to the tunneling effect by the thin carbon coating than the main body in a synthetic resin body, but can not be lowered to less than the surface electrical resistance of the tile ¹⁰ 10 Ω / ㎠, the surface resistance of the tile 10 ¹³ Ω / ㎠ There is a problem that cannot be lowered below.

In addition, Patent No. 451482 has been published to increase the surface strength of tiles, which includes a shape layer (2) and a transparent protective layer (1) on the upper surface of the PVC base or water-resistant plywood layer (3). In the flooring material, the shape layer (2) and the transparent protective layer (1) were made of phenolic composite resin solution containing 15-25% by weight of polyurethane resin based on the phenolic resin obtained by reacting resorcinol with formalin. The structure is characterized in that the impregnated prepreg is heat-compressed, which is effective in increasing the surface strength of the tile, but does not include an antistatic means for preventing the static electricity generated on the tile surface. There is no problem.

The present invention is to overcome the above problems, the present invention is to provide an antistatic tile which is excellent in the surface electrical resistance and volumetric electrical resistance, and can prevent the shrinkage expansion of the tile and increase the surface strength. The purpose.

The present invention is to achieve the above object, the present invention is a phenolic resin layer, a shape sheet laminated on the lower surface of the phenolic resin layer, a first conductive layer attached to the lower surface of the shape sheet, laminated on the lower surface of the conductive layer tile And a second conductive layer attached to the lower surface of the main body layer to prevent shrinkage expansion.

In addition, the first conductive layer of the present invention is glass fiber; And a carbon layer attached to upper and lower surfaces and or one surface of the glass fiber.

In addition, the main body layer of the present invention is characterized in that the crushed fiber of 10-40% by weight in 60-90% by weight of synthetic resin.

In addition, the second conductive layer of the present invention comprises a carbon layer attached to the upper and lower surfaces, one surface, or both.

In addition, the main body layer, the first conductive layer and the second conductive layer of the present invention is characterized by containing a surfactant.

As shown in FIG. 1, the thermosetting layer 10, the shape sheet 20 laminated on the bottom surface of the phenol resin layer, the first conductive layer 30 attached to the bottom surface of the shape sheet, and the first conductive layer 30. And a second conductive layer 50 attached to the bottom surface of the body layer 40 and laminated to the bottom surface and preventing tile shrinkage expansion.

The thermosetting layer 10 is manufactured from a phenol resin, an epoxy resin, a urethane resin, and the like, and the most preferable material is manufactured using a phenol resin. In the specification of the present invention, the thermosetting layer is used by attaching the reference numeral to the phenol resin layer (10).

The phenol resin layer 10 is a composite resin containing 15-25% by weight of polyurethane resin with respect to the phenol resin prepared by reacting resorcinol with formalin. The phenolic composite resin of the present invention has a strong surface hardness because the glass transition temperature (Tg) is higher than the melamine resin, and because the flexible polyurethane resin is mixed, the bending strength is low and the flexibility is excellent, and the shear strength is excellent. Thermal deformation can be suppressed.

In addition, in the present invention, since the shape sheet 20 laminated on the lower surface of the phenolic resin layer is also impregnated in the phenolic composite resin, there is little hygroscopicity, no deformation due to moisture, less shrinkage or expansion due to heat, and curling phenomenon due to heat Can be prevented.

The first conductive layer 30 is a glass fiber 32, the carbon layer is coated on the upper and lower surfaces of the glass fiber (32).

The glass fiber 32 is made of a glass shape by melting the glass, its characteristics are resistant to high temperatures, it does not burn, does not absorb water, has less hygroscopicity, and has a chemical durability that does not corrode. .

Coating the carbon layer 34 on the upper and lower surfaces of the glass fiber 32 serves to lower the surface electrical resistance of the tile surface. In the exemplary embodiment of the present invention, the coating of the carbon layer on both surfaces of the glass fiber 32 is illustrated, but the present invention is not necessarily limited thereto.

In addition, although the main body layer 40 is generally impregnated with 10-40% by weight of pulverized fiber 60-90% by weight of synthetic resin, most preferably 10 to 90% by weight of PVC resin (PVC) By weight of ground fiber.

The pulverized fiber can be a general fiber, that is, natural fibers or artificial fibers can be both, non-woven or woven fabrics can be said.

As described above, by mixing 10% by weight of glass fibers in the PVC, it is possible to prevent the expansion and contraction of the tile due to the temperature change, it is possible to prevent the phenomenon such as dust is caught between the tiles.

In addition, the second conductive layer 50 may include a nonwoven fabric 52; And a carbon layer 54 attached to upper and lower surfaces of the attachment cloth 52. As described above, by forming the second conductive layer 50 on the nonwoven fabric 52 and on the upper and lower surfaces of the nonwoven fabric 52, the volume resistance of the tile can be lowered, and the expansion and contraction of the tile due to temperature change can be reduced. There is an effect that can be prevented.

In an embodiment of the present invention, the lamination of the carbon layer 54 on the upper and lower surfaces of the nonwoven fabric 52 is illustrated, but the present invention is not limited thereto, and the carbon layer 54 may be formed on only one of the upper and lower surfaces of the nonwoven fabric 52. It is also preferable to coat.

The experimental values measured for the surface resistance and the volume resistance of the antistatic tile according to the present invention are as follows.

Example

Example  1 (surface resistance of tiles according to the present invention)

Ω/㎠이 되어 종래의 정전기 방지타일보다 표면저항이 감소되어 정전기방지에 효과가 있을 뿐만 아니라 다음과 같이 전자파차폐에 효과가 있음이 확인되었다.A phenolic resin layer, a shape sheet laminated to the lower surface of the phenolic resin layer, a first conductive layer adhered to the lower surface of the shape sheet, a main body layer laminated on the lower surface of the conductive layer and prevented from shrinkage of the tile, attached to the lower surface of the body layer By fabricating a tile made of a second conductive layer, the resistance between the electrodes of the same plane was evaluated.

It was confirmed that the resistance of Ω / cm 2 to the surface resistance is lower than that of the conventional antistatic tile, which is effective in preventing the static electricity as well as the effect of electromagnetic shielding as follows.

Example  2 (volume resistance of the tile according to the present invention)

Ω/㎠됨을 확인할 수 있었다. In the invention of Example 1, the volume resistance was measured by placing the electrode in the thickness direction and the volume resistance was measured by placing the electrode in the thickness direction.

It was confirmed that Ω / ㎠.

Ω/㎠에서

Ω/㎠으로 떨어트려 타일 전체를 전도성을 뜨게 하여 정전기를 효율적으로 감소시킬 수 있다.Therefore, the volume resistivity described in the embodiment of the present invention

At Ω / ㎠

By dropping to Ω / cm 2, the entire tile becomes conductive, which effectively reduces static electricity.

Example  3 (electromagnetic shielding experiment of the tile according to the present invention)

The degree of electromagnetic shielding through the antistatic tile according to the present invention was measured. The measuring method used the test method of "ASTM D4935-89", the decibel value (A) was confirmed to be 8 ± 05 dB.

)×100%)에 넣고 계산을 하면, 82.21%에서 85.87%의 전자파를 차폐할 수 있음을 확인하였다.Therefore, the decibel value (A) is a formula for calculating the electromagnetic shielding effect (shielding effect (%) = (1-

) And 100%), it can be seen that it can shield 85.87% of electromagnetic waves from 82.21%.

Example  4 (of the tile according to the invention Sumacwave  Shielding experiment)

In addition, it was confirmed that it can shield the water wave which is a problem in modern society. Water waves are already harmful waves that rise above the ground at depths of 100 to 200 meters above the ground. If they generate beneficial wavelengths where these harmful wavelengths exist, the harmful wavelengths can be neutralized and neutralized. At present, there are no scientific measuring instruments for water vein waves anywhere in the world, and the measurement itself can only be measured with elrods or pendulums based on human sensitivity. As a result of measuring by FT-IR spectrometer method based on assuming that emissivity of theoretical sample, which is not actually present, BLACK BODY is 1, the far-infrared emissivity of antistatic tile according to the present invention is 0.68, that is, 68% of It showed high emissivity and 250 watts of radiation energy was generated to neutralize the water wave.

In addition, the antistatic tile according to the present invention has been confirmed that the infrared thermography test can neutralize the water wave since most of the room temperature radiates far infrared rays of 30 ℃ at 26 ℃.

In the present specification, the present invention has been described with reference to limited embodiments, but various embodiments are possible within the spirit of the present invention. In addition, although not described, equivalent means will also be combined as is in the present invention. Therefore, the true scope of the present invention will be defined by the claims.

According to the invention,

Hard tiles can be manufactured using phenolic resin as the tile surface, and the phenolic resin layer can absorb moisture to lower the electrical resistance of the tile surface, and by laminating the first conductive layer on the lower surface of the phenolic resin layer or shape sheet Lower surface and volume electrical resistance can prevent permanent static electricity, and there is an effect that can prevent the expansion and expansion of the tile using a non-woven fabric, glass fiber, crushed fiber.

Claims (8)

An antistatic tile comprising a thermosetting resin layer, a first conductive layer attached to a lower surface of the thermosetting resin layer, and a body layer laminated on the lower surface of the first conductive layer and preventing tile shrinkage expansion. A thermosetting resin layer and a body layer laminated on a lower surface of the thermosetting resin layer and preventing tile shrinkage expansion; An antistatic tile comprising a second conductive layer attached to the lower surface of the body layer. The method of claim 1, The antistatic tile further comprises a second conductive layer attached to the lower surface of the body layer. The method of claim 1, The first conductive layer is glass fiber; And An antistatic tile comprising a carbon layer attached to the upper and lower surfaces and or one surface of the glass fiber. The method according to claim 1 or 2, The main body layer is antistatic tile, characterized in that impregnated with 10-40% by weight of crushed fiber 60-90% by weight synthetic resin. The method according to claim 2 or 3, The second conductive layer is an antistatic tile, characterized in that the non-woven fabric to prevent the shrinkage of the tile. The method of claim 6, The second conductive layer is an antistatic tile comprising a carbon layer attached to the upper surface, one surface, or both of the nonwoven fabric. The method according to claim 1 or 2, Antistatic tile, characterized in that the main body layer contains a surfactant.

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