JP2696522B2 - Antistatic coating for floor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an antistatic covering material for floors.

[Conventional technology]

In recent years, the spread of electronic devices including computers has been remarkable.
In particular, large computers are preferably placed in rooms with special considerations because of their precision. For example, it is preferable to install on a floor that can withstand vibration during an earthquake. As a floor having such a function, a double floor of a free access type or the like has been developed and is being put to practical use. The double floor of the free access type simply consists of a support leg and a floor panel supported by the support leg from the floor base.

A finishing material is arranged on the surface of the floor panel of this free access type double floor, and the finishing material (for example, a tile) is
It is customary to have an antistatic property in order to eliminate the adverse effects of static electricity on the computer. Further, the surface of the finishing material is usually coated with a coating agent (so-called floor polish) to protect the finishing material from dirt or scratches. The coated coating agent is periodically chemically stripped using a stripping agent such as a detergent, and coated again.

[Problems to be solved by the invention]

However, the release agent is usually in a liquid state, and during the release operation, the release agent enters under the floor panel from the gap in the floor panel and adversely affects the wiring between computers or electrical wiring under the floor panel, causing computer noise. May be.

Accordingly, an object of the present invention is to provide a coating material which can be renewed without using a liquid release agent and has an antistatic effect.

In addition, the conventional floor polish sometimes generates dust due to powdering. The dust may enter the inside of a computer or the like and cause a computer trouble. Therefore, another object of the present invention is to provide a coating material that does not cause powdering.

[Means for solving the problem]

The present invention comprises a surfactant, an organic polymer film containing at least one selected from the group consisting of conductive fine particles and conductive fibers, and a fixing means for fixing the polymer film to a floor, The polymer film is 3
Wear wheels with a Knoop hardness of ~ 20 KHN and CS-17 and 100
The present invention relates to an antistatic covering material for floors, which has a weight loss of 100 mg or less in Taber abrasion under a condition of 500 rotations using a load of 0 g.

The polymer film having an antistatic effect used in the present invention preferably has a surface resistance of, for example, 10 ¹² Ω or less. This is because a film having such a surface resistance value hardly causes noise or the like on a computer or the like due to charging. Further, it is particularly preferable that the above-mentioned polymer film has a surface resistance of 10 ⁸ Ω or less. The internal resistance of the polymer film having an antistatic effect is preferably 10 ¹³ Ω or less.

Examples of the polymer film having an antistatic effect include a polymer film containing at least one of a surfactant, conductive fine particles, and conductive fibers.
Examples of the polymer film that can be used here include, but are not limited to, films of polymers such as polyvinyl chloride, polyethylene, polycarbonate, polyacryl, polystyrene, polyester, nylon, polypropylene, polyurethane, and ABS, and monomers other than the two that form these polymers. Films of the following copolymers. Further, the polymer film may be a laminate film composed of two or more of the above films. Further, the polymer film may be a film-shaped molded product, fiber, or the like.

These polymer films have a Knoop hardness of 3-20 KHN,
Preferably, it is 8 to 15 KHN from the viewpoint of using it for floors. By setting the Knoop hardness to 3KHN or more, the coating material is not easily damaged by the impact of pedestrians walking, and the beautiful face is not impaired by the decrease in gloss and dirt penetration, etc. Performance can be maintained for a period. Also Knoop hardness 20
By setting it to KHN or less, cracking or slippage of the covering material due to the impact of a pedestrian does not occur, and the covering material can be used for a long time.

Furthermore, the polymer film used in the present invention is obtained by the Taber test method (load: 1000 g, wear wheel CS-17, rotation speed: 500 rpm).
It is preferable from the viewpoint of durability that the weight loss is 100 mg or less, preferably 50 mg or less.

Further, the polymer film used in the present invention has a thickness of 0.
001 to 10 mm, preferably 0.1 to 2 mm, more preferably 0.5
The thickness of 1.5 mm is preferable in terms of durability.

Further, surfactants that can be added to the polymer film are exemplified below.

Anionic surfactants Sulfonic acid type (aliphatic sulfonic acid salt, etc.) Sulfate ester type (higher alcohol sulfate ester, higher alcohol EO adduct sulfate ester salt, etc.) Phosphate ester type (higher alcohol phosphate ester salt,
Higher alcohol EO adduct phosphate salt etc.) Cationic surfactant Quaternary ammonium salt type cationic surfactant etc. Nonionic surfactant Polyethylene glycol type (higher alcohol EO adduct,
Polyethylene glycol fatty acid ester, etc.) Polyhydric alcohol type (polyhydric alcohol fatty acid ester, etc.) amphoteric surfactant Betaine type amphoteric surfactant, etc. The conductive fine particles include, for example, silver, carbon, and the like.
Copper, tin oxide, titanium oxide, or the like can be used. still,
In order to obtain a transparent film, it is preferable that the average particle size of the conductive fine particles is about 0.1 μm or less.

Further, as the conductive fiber, for example, a fiber such as copper can be used. In order to obtain a transparent film,
Preferably, the conductive fibers have an average diameter of about 0.1 microns or less. Further, the length of the fiber is not particularly limited, but from the viewpoint of imparting excellent conductivity with a small amount of addition,
Preferably it is between 0.5 and 100 microns.

A polymer film having an antistatic effect using a surfactant preferably contains 0.01 to 10 parts by weight of a surfactant based on 100 parts by weight of the polymer.

Further, in the polymer film having an antistatic effect using conductive fine particles, 0.05 parts by weight of the polymer 100 parts by weight
It is suitable to contain 100100 parts by weight of conductive fine particles.

Further, in a polymer film having an antistatic effect using a conductive fiber, 0.05 to 1 with respect to 100 parts by weight of the polymer.
Suitably, it contains 00 parts by weight of conductive fibers.

Further, the polymer film having an antistatic effect can be a film of a conductive polymer such as an ionomer.

In addition to the antistatic agent, a bactericide, an insect repellant, a pigment, or the like can be mixed in the polymer film.

On the other hand, as a fixing means for fixing the polymer film having the antistatic effect to the floor, for example, an adhesive can be used. The adhesive has an adhesive strength of 1 kg / 25 mm width to 0.5 kg / 25 mm width (JIS Z 02
(37) is preferred. As the adhesive, for example, acrylate, acryl-vinyl acetate copolymer,
It is preferable to use natural rubber, synthetic rubber, SBR rubber, butyl rubber, polyvinyl ether, polyterpene resin, rosin, oil-soluble phenol resin, polyisobutylene, etc. alone or in combination. In particular, acrylic esters,
Acrylic-vinyl acetate copolymer, natural rubber, synthetic rubber,
SBR rubber is preferred.

The adhesive is usually provided on one side of the polymer film.
The adhesive may be provided on the entire surface of one side of the film or on a part of the film as long as the polymer film can be fixed sufficiently.

When an adhesive is used as the fixing means, a release paper may be appropriately provided on the surface of the adhesive layer opposite to the polymer film.

In the present invention, as the fixing means, any means other than the adhesive can be used as long as the polymer film can be fixed to the tile in a state where the polymer film can be peeled off from the floor. For example, a magic tape, a hook, a clip, or the like can be used. For example, a concave portion may be provided on the flooring material, and a convex fixing means may be provided on the polymer film, and the fixing may be performed like a hook.

Furthermore, using a heat-sealing material as a fixing means,
For example, a coating material obtained by laminating the polymer film and the heat-sealing film is laid on the floor, and then the coating material can be fixed by heat treatment with an iron or iron.

The antistatic coating material of the present invention may be a floor, for example, an antistatic vinyl floor tile, a conductive vinyl floor sheet, a conductive inlaid sheet, a semi-hard vinyl tile, an antistatic high-pressure melamine decorative board, a conductive rubber floor, and a conductive sponge sheet. It can be used favorably as a coating material for antistatic tiles. Further, after a certain period of time has passed after coating, the coating material can be appropriately peeled off without using a liquid peeling agent and replaced with a new coating material. Further, since a polymer film is used, powdering does not occur.

 Hereinafter, the present invention will be described with reference to examples.

Example A performance test was performed on the coating material samples shown in Table 2.

In a passage with daily traffic of about 5,000 people, 300
A coating material sample of × 300 mm was stuck on a vinyl ahibest tile floor, laid for 30 days, walked randomly, and the surface electric resistance, appearance and properties of the sample after walking were evaluated according to the following criteria. The results are shown in Table 2.

In addition, the coating materials of the present invention of Sample Nos. 1 to 8 were prepared by mixing a surfactant and the like with the raw materials and the formulations shown in Table 1 in order to keep the surface electric resistance value and the internal resistance value in the resin within the range of the present invention. The mixture was sufficiently kneaded with the resin in the polymer film until uniform, the film thickness was made constant, and an adhesive was applied to obtain an antistatic coating material. The numerical values in Table 1 are the amounts (parts by weight) of the antistatic agent raw materials with respect to 100 parts by weight of the polymer resin in the polymer film.

The polymer film used is a commercial product (Table 3).

(1) Presence or absence of fluffy dust adhered to the surface due to surface electrification A: No fluffy dust adhered.

B: Cotton-like dust is slightly adhered, but can be easily removed by sweeping.

C: Some cotton-like dust adhered and could not be removed by sweeping, but could be easily removed by wiping.

D: A large amount of flocculent dust adheres and can be removed by wiping, but flocculent dust adheres immediately.

(2) Degree of damage A: There is no trace of abrasion and gloss is not reduced.

B: Although slightly worn, the decrease in gloss is small.

C: Worn, with some decrease in gloss.

D: Completely worn and lost gloss.

(3) Contamination A: There is no abrasion and no evidence of contamination.

B: No abrasions, but slight signs of contamination.

C: Some abrasions occur, with some evidence of contamination.

D: There are countless scratches and severe contamination.

(4) Cracks during walking A: No signs of cracking.

B: There are slight signs of cracks.

C: Cracks are slightly visible.

D: Countless cracks are visible.

(5) Slip property (performed according to Japanese Industrial Standard JIS A 1407) A: Slip resistance coefficient 0.4 or more B: Slip resistance coefficient 0.2 to 0.3 C: Slip resistance coefficient 0.1 to 0.2 D: Slip resistance coefficient 0.1 or less (6) Adhesion to floor A: No peeling.

B: The corner is slightly turned up.

C: The area is slightly peeled.

D: The whole will come off.

(7) Peelability from floor A: Peel easily from floor.

B: Peel off from the floor with a slight force.

C: It finally peels off from the floor with force.

D: Does not peel off even if force is applied from the floor.

[Effects of the Invention] According to the present invention, it is possible to provide a floor covering material that can be provided on a floor surface and can be separated from the floor surface without using a solvent such as water. Further, the coating material of the present invention has excellent properties such as durability almost equivalent to those of conventional coating agents, and does not cause powdering.

Claims (11)

(57) [Claims] 1. An organic polymer film containing at least one selected from the group consisting of a surfactant, conductive fine particles and conductive fibers, and fixing means for fixing the polymer film to a floor. The polymer film is 3
Wear wheels with a Knoop hardness of ~ 20 KHN and CS-17 and 100
An antistatic covering material for floors, which has a wear loss of 100 mg or less in taper wear under a condition of 500 rotations using a load of 0 g. 2. The coating material according to claim 1, which has a surface resistance of 10 ¹² Ω or less. 3. The coating material according to claim 1, which has an internal resistance value of 10 ¹³ Ω or less. 4. The coating material according to claim 1, which further comprises 0.01 to 10 parts by weight of a surfactant per 100 parts by weight of the polymer. 5. The coating material according to claim 1, wherein the coating material contains 0.05 to 100 parts by weight of conductive fine particles with respect to 100 parts by weight of the polymer. 6. The coating material according to claim 1, wherein said polymer film is an ionomer film. 7. The covering material according to claim 1, wherein said fixing means is means for fixing said polymer film in a state capable of being peeled off from a floor. 8. The coating material according to claim 1, wherein said polymer film has a thickness of 0.001 to 5 mm. 9. A coating material according to claim 1, wherein said polymer film is composed of one or more films. 10. The covering material according to claim 7, wherein said fixing means is an adhesive. An adhesive having an adhesive strength of 0.1 to 2 kg / 25 mm width (JIS)
The coating material according to claim 10, which has Z0237).