JP2002070297A - Method of laminating floor film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of laminating a floor film which prevents swelling, peeling, warping, cracking or the like and is excellent in adhesion and bearable to loading of a man, things or the like and specifically sufficiently applicable for a base containing much water in finished coating using MMA finishing material. SOLUTION: This method of laminating the floor film laminates on a floor surface, successively, a polymer cement base regulating coating material layer (A) for a finished coating material, which forms the film having water vapor permeability by JIS K5400 [coating material general testing method] 8.17 of 40 g/m2 for 24 hours or more and compressive strength by JIS A6916 [base regulating coating material for a fished coating material] 6.13 of 20 N/mm2 or more and adhesive strength by JIS A6916 [base regulating coating material for a finished coating material] 6.14 of 1 N/mm2 or more, an under coating material layer (B), and a finishing material layer (C) formed by a finishing material containing a methyl methacrylate monomer and/or oligomer, a paraffin and/or wax, and a polymerization catalyst.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for finishing a coating film on a floor.

[0002]

2. Description of the Related Art Conventionally, indoor floor surfaces of architectural structures such as factories and warehouses, or outdoor floor surfaces such as general sidewalks, pedestrian bridges, and platforms have been painted with floor finishing materials to improve aesthetic appearance and dust prevention. Attempts have been made to provide functions such as properties, non-slip properties, and chemical resistance.

[0003] Such a floor finishing material is a finishing material using a methyl methacrylate (hereinafter, also referred to as "MMA") monomer and / or oligomer as a binder (hereinafter, also referred to as "MMA-based finishing material"). ) But fast-setting,
Attention has been paid to such reasons as high strength and excellent low-temperature workability. This MMA-based finishing material is composed of a main agent composed of MMA monomer and / or oligomer, paraffin and / or wax, aggregate, colorant, and the like, and a curing agent composed of a polymerization catalyst and the like. , MMA monomers and / or oligomers. At this time, paraffin and / or wax in the components form a film on the surface of the coating film, thereby sealing the oxygen in the atmosphere so as not to inhibit the polymerization reaction. In this way, the polymerization reaction proceeds in the coating film, and a high-molecular polymer coating film can be formed.

[0004]

When applying such an MMA-based finishing material to a floor surface, a moisture-curable urethane resin-based material must be used in order to ensure adhesion to the base and air-blocking properties.
A method of applying a finishing material after applying an undercoat material such as an epoxy resin type, a modified phenolic resin type, a modified polyester type or the like is used. However, since the MMA-based finishing material crosslinks low molecular weight components such as MMA monomers by radical polymerization in a situation where paraffin and / or wax in the components forms a film on the surface of the coating film, the coating film is extremely poor. It is dense and has a large curing shrinkage, and completely shuts off water vapor and the like on the base. For this reason, when the strength of the base is low, swelling, peeling, warping, cracking, etc. may occur, and a coating film having sufficient physical properties may not be formed.

In addition, on the concrete slab surface on the deck plate, the moisture at the time of casting the concrete and the moisture generated thereafter lose the escape space after the concrete hardens, and remain near the boundary between the deck plate and the concrete. , The water content tends to be high. When an MMA-based finishing material is coated on such a surface having a high water content, problems such as swelling and peeling over time tend to occur. To cope with such a problem, Japanese Patent Publication No. 21512/1994 proposes forming an underlayer composed of a hydraulic cement for binding the aggregate and a polymer dispersion without the addition of an antifoaming agent. The mechanism of action here is that the base layer forms a continuous porous ventilation path, and the moisture contained in the concrete is guided to the ventilation path and scattered to the outside, thereby suppressing the occurrence of blisters. is there.

[0006] However, the underlayer disclosed in Japanese Patent Publication No. Hei 6-21512 has an effect of diffusing water but has a low strength. For this reason, even if an MMA-based finishing material is applied to such an underlayer, the underlayer cannot withstand the load of a person or an object and cracks or warps from the painted end. Alternatively, problems such as poor adhesion of the finishing material are likely to occur, and a practical material cannot be obtained.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and does not cause swelling, peeling, warping, cracking, or the like of a coating film in a coating finish using an MMA-based finishing material. It is excellent in property and can bear the load of people and things,
In particular, it is an object of the present invention to provide a floor coating laminating method which can be sufficiently applied to an underlayer containing a large amount of water.

The present inventors have conducted intensive studies, and as a result,
It has been found that it is effective to form a specific polymer cement base adjustment coating material layer on the floor surface, and then sequentially laminate the undercoat material layer and the MMA-based finishing material layer. That is,
The present invention has the following features.

1. The water vapor permeability according to JIS K5400 “General Paint Test Method” 8.17 is 40 g / m 3
² · 24h or more, JIS A6916 "finish coating material for the base adjustment coating material" 6.13 compressive strength of 20N / mm ² or more,
6.14, a polymer cement base adjustment coating material layer (A), an undercoat material layer (B), a methyl methacrylate monomer and / or oligomer, and a paraffin which form a coating film having an adhesion strength of 1 N / mm ² or more. And / or laminating a finishing material layer (C) formed of a finishing material containing a wax and a polymerization catalyst in order. 2. The polymer cement base adjustment coating material layer (A) is formed of a polymer cement base adjustment coating material containing an epoxy resin. Floor coating lamination method described in 1.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION [Polymer Cement Base Adjustment Coating Layer (A)] In the polymer cement base adjustment coating layer, the coating film to be formed is JIS K5400 “Coating General Test Method” 8.17 Water Vapor Permeation degrees is 40g ^/ m 2 · 24h or more, preferably 40~1000g ^/ m 2 · 24h, more preferably 50~500g ^/ m 2 · 24h, JIS
A6916 "topcoat material for a base adjustment coating material" 6.13 compressive strength of 20 N / mm ² or more, preferably 25 N / mm ² or more, the 6.14 bond strength is 1N / mm ² or more, preferably 2N / mm ² or more.

According to the present invention, only when the base adjustment coating material layer has such physical properties, the water vapor due to the moisture in the concrete is diffused to suppress the local pressure rise and prevent the swelling of the coating film. It is possible to sufficiently withstand the load of a person or an object, and it is possible to prevent warpage, peeling, and the like when the MMA-based finishing materials are laminated.

When the water vapor transmission rate is lower than 40 g / m ² · 24 h, the base adjustment coating material layer does not sufficiently diffuse the water vapor due to the moisture in the concrete and swells or peels off. If the water vapor permeability is high, the function of diffusing water vapor is also enhanced, but if this value is too high, the strength of the coating film tends to decrease. On the other hand, if the compressive strength is less than 20 N / mm ² and the adhesive strength is less than 1 N / mm ² , the base adjustment coating material layer may not be able to withstand the load of a person or an object and may crack, or the MMA-based finishing material may have May warp when painted.

[0013] Such a polymer cement-based base adjustment material layer is formed by applying a polymer cement-based base adjustment material. In the present invention, a polymer cement-based base conditioner that forms a coating film that satisfies the above physical property values can be used.
A polymer cement base preparation coating material containing a curing agent of an epoxy resin, cement, and water as essential components and, if necessary, a powder component such as an aggregate and a filler is preferably used. By using such an epoxy resin-containing base adjustment coating material, a coating layer having both a sufficient water vapor diffusion function and coating strength can be formed.

As the epoxy resin, for example, bisphenol A type epoxy resin, novolak type epoxy resin,
Examples thereof include bisphenol F type epoxy resins, brominated epoxy resins, cycloaliphatic epoxy resins, and the like, and those modified with polyester resins, phenol resins, melamine resins, and the like. In the present invention, a liquid epoxy resin can be preferably used. The average molecular weight of such a liquid epoxy resin is 100 to 4000, preferably 200 to 1000. Further, the epoxy equivalent of the epoxy resin is desirably 100 to 3000.

Examples of the curing agent for the epoxy resin (hereinafter also referred to as “curing agent”) include, for example, aliphatic polyamine,
Alicyclic polyamines, aromatic polyamines, polyamides, amidoamines, heterocyclic amines, and the like, or modified products thereof can be used.

The epoxy resin and the curing agent may be of a self-emulsifying type by introducing a hydrophilic group into the epoxy resin or the curing agent in order to impart hydrophilicity or emulsifying property, or of a premixed emulsifying agent. It can be suitably used. The mixing ratio of the epoxy resin and the curing agent is such that the epoxy equivalent: active hydrogen equivalent is 100: 10 to 40.
It is desirable to be blended so as to be 0.

As the cement, ordinary Portland cement, early-strength Portland cement, ultra-high-strength Portland cement, moderately heated Portland cement, sulfate-resistant Portland cement, white Portland cement, alumina cement, ultra-rapid hardening cement, expanded cement, acidic phosphoric acid Salt cement, silica cement, blast furnace cement, fly ash cement, keince cement and the like can be mentioned.

The mixing ratio of the epoxy resin and the curing agent to cement is such that the epoxy resin and the curing agent are 50 to 200 wt. Department, and even 60-
Desirably, it is 110 parts by weight. When the amount is less than 50 parts by weight, sufficient coating film strength cannot be obtained, and when the amount is more than 200 parts by weight, the water vapor diffusion function tends to decrease. The mixing ratio of water is 10 to 2 parts per 100 parts by weight of cement.
It is desirably 00 parts by weight.

The powder component includes aggregates such as silica sand, dolomite, perlite, vermiculite, styrene resin foam, ethylene vinyl acetate resin foam, vinyl chloride resin foam, heavy calcium carbonate, clay, kaolin, and talc. ,
Fillers such as sedimentable barium sulfate, barium carbonate, white carbon, diatomaceous earth and the like can be used. The mixing ratio of the powder component is 0 to 100 parts by weight of the cement.
Desirably, it is 600 parts by weight, more preferably 100 to 500 parts by weight. If the amount is more than 600 parts by weight, the strength of the coating film tends to decrease.

Other resin components include chloroprene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, methyl methacrylate-butadiene rubber,
Use of synthetic rubber latex such as butadiene rubber, thermosetting resin emulsions such as polyacrylate, polyvinyl acetate, vinylidene chloride-vinyl chloride, polyvinyl propionate, and epoxy resin, and bituminous emulsions such as asphalt and rubber asphalt. Can also.

Further, a thickener, a defoaming agent, a water reducing agent, a surfactant and the like which can be used for a usual base adjustment coating material can also be used.

[Undercoating Material Layer (B)] The undercoating material layer in the present invention is formed of an undercoating material containing a synthetic resin as a main component.
It plays a role in ensuring that polymerization of the system finish is sufficiently performed. Thereby, the adhesion of the MMA-based finishing material is sufficiently ensured. As the synthetic resin, for example, an acrylic resin, a urethane resin, an epoxy resin, a polyester resin, or the like can be used. The form may be either a one-pack type or a two-pack type. Among them, in the present invention, a moisture-curable urethane resin is particularly preferably used.
As components other than the synthetic resin, pigments such as heavy calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, white carbon, and diatomaceous earth can also be used. Further, various additives usually used in paints, for example, a plasticizer, a preservative, an antifungal agent, an antialgal agent, an antifoaming agent, a leveling agent, a dispersant, an anti-settling agent, an anti-sagging agent and the like can also be used. . It is preferable that the undercoat material contains 10% by weight or more of synthetic resin in terms of solid content.

[Finishing Material Layer (C)] The finishing material layer in the present invention is formed of a finishing material containing MMA monomers and / or oligomers, paraffin and / or wax, and a polymerization catalyst. Alternatively, a high-strength coating film can be formed by a radical reaction of the oligomer. At this time, paraffin and / or wax in the components form a film on the surface of the coating film, thereby sealing the oxygen in the atmosphere so as not to inhibit the polymerization reaction. In this way, the polymerization reaction proceeds in the coating film, and a high-molecular polymer coating film can be formed.

As the resin component, MMA monomer and / or
Or it is essential to contain an oligomer, but in addition to this, for example, ethyl methacrylate, n-methacrylic acid
-Butyl, i-butyl methacrylate, t-methacrylate
Methacrylates such as butyl, 2-ethylhexyl methacrylate, lauryl methacrylate, cyclohexyl methacrylate, and benzyl methacrylate; ethyl acrylate, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, and acrylic acid 2 -Ethylhexyl,
Acrylic esters such as lauryl acrylate, cyclohexyl acrylate and benzyl acrylate; containing hydroxy groups such as 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate and 2-hydroxypropyl acrylate ( Meta)
Acrylates; amino group-containing (meth) acrylates such as N, N-dimethylaminoethyl methacrylate and N, N-dimethylaminoethyl acrylate; alkanediol compounds such as ethylene glycol dimethacrylate and ethylene glycol diacrylate; diethylene glycol dimethacrylate; Polyoxyalkylene glycol compounds such as diethylene glycol diacrylate; carboxyl group-containing compounds such as methacrylic acid, acrylic acid, crotonic acid, maleic acid, and itaconic acid; methacrylamide;
Amide group-containing compounds such as acrylamide; aromatic vinyl compounds such as styrene and vinyl toluene; vinyl halide compounds such as vinyl chloride and vinylidene chloride can also be used.

Examples of the paraffin and / or wax include paraffin wax, polyethylene wax, and higher fatty acids such as stearic acid and 1,2-hydroxystearic acid. Examples of the polymerization catalyst include benzoyl peroxide and methyl ethyl ketone peroxide.

The mixing ratio of each component is such that paraffin and / or wax is 0.5 to 100 parts by weight of the resin component.
It is desirable that 10 parts by weight and the polymerization catalyst be 0.1 to 5 parts by weight.

In the finishing material, in addition to the above components, a coloring agent, a filler, an aggregate, a polymerization accelerator, and the like can be blended. As a coloring agent, various inorganic pigments, organic pigments, coloring aggregates, etc., and as a filler, heavy calcium carbonate, talc,
Examples of aggregates such as silica sand and inorganic powders such as metal powders include pearlite, vermiculite, glass balloons, shirasu balloons, silica stone, cold water stones, ceramic pieces, and resin particles. Examples of the polymerization accelerator include an aromatic amine compound or a derivative thereof. Also, as various additives,
Plasticizers, preservatives, fungicides, algicides, defoamers, leveling agents, dispersants, anti-settling agents, thickeners, drying regulators, fibers,
Those usually used for paints, such as ultraviolet absorbers and antioxidants, can also be added.

[Applied Surface] The present invention is applied to the indoor floor surface of a building structure such as a factory or a warehouse, or the outdoor floor surface of a general sidewalk, a pedestrian bridge, a platform, etc. You.

[Lamination Method] In the present invention, the above-mentioned base adjustment coating material layer (A), undercoat material layer (B), and finish material layer (C) are sequentially applied to laminate. The base adjustment coating material needs to form a coating film having a water vapor transmission rate of 40 g / m ² · 24 h or more.
It is painted in g / ^{m 2.} The drying time is about 6 to 24 hours. A trowel, a lysin gun, a roller, a brush, and the like are used as a coating device. If there is unevenness on the ground,
Partial repairs can also be made. Further, by providing joints or grooves on the floor surface to be coated to allow the water vapor of the base adjustment coating material layer to escape, the blister prevention effect can be further enhanced.

Next, the undercoat material is applied in an amount of 0.1 to 0.5 kg.
/ M ² and dried for about 2-6 hours. A spray gun, a roller, a brush, or the like is used as a coating device.

After drying the undercoat material, the finish material is painted. The finishing material may have only one layer or two or more layers.
In addition, as the finish form, it can be finished smoothly, or it can be a finish expressing a pattern using a joint formwork or the like. When the finishing material is to be smoothed with one layer, it is applied at a coating amount of 0.3 to 3 kg / m ² and dried for 24 hours or more. As a coating device, a trowel, a spray gun, a lysing gun, a roller, a brush, and the like are used. When the pattern is to be displayed using the joint formwork, for example, first, the finishing material A
Using a color pigment as a coating amount of 0.3 to
Coat with a trowel, spray gun, ricin gun, roller, brush, etc. at 3 kg / m ^{2 and} dry for 1.5 to 3 hours. This finishing material A has a joint color. Next, on the finishing material A, after joining the joint form so that a desired pattern can be formed, the finishing material B containing the colored aggregate is applied in an amount of 3 to 3 times.
Paint with a trowel, ricin gun, stucco gun or the like at 5 kg / m ^{2 and} dry for 1.5 to 3 hours. Subsequently, the jointing form is removed, and a finishing material C for forming a transparent coating film is applied at a coating amount of 0.3 to 0.5 kg / m ^{2 with a} roller, a spray gun, a brush, a trowel, etc., for 24 hours. Dry above.
By laminating the finishing materials A, B, and C in this manner, a desired pattern can be displayed, and a coating film excellent in weather resistance and the like can be obtained.

[0032]

EXAMPLES Examples and comparative examples are shown below to further clarify the features of the present invention.

(Manufacture of Base Adjustment Coating Material) A base adjustment coating material was manufactured using the raw materials shown in Table 1 according to the formulation shown in Table 2.

[0034]

[Table 1]

[0035]

[Table 2]

(Production of Undercoat Material) 25.5 parts by weight of methyl ethyl ketone and 25.5 parts by weight of toluene were added to 49.0 parts by weight of the moisture-curable urethane resin to prepare an undercoat material.

(Production of Finishing Material) Using the raw materials shown in Table 3,
Finishing materials were manufactured according to the formulations shown in Table 4.

[0038]

[Table 3]

[0039]

[Table 4]

(Example 1)

Blisting resistance test 3 The back and side surfaces were completely sealed with epoxy resin.
After adjusting a concrete board of 00 × 300 × 60 mm to a water content of 20%, the base surface adjusting material composition was first applied to the remaining surface at an application amount of 1000 g / m ² , and 16 hours later, the undercoat material composition was applied. The material was applied at a coating amount of 200 g / m ² , and after 4 hours, a finishing material was applied and cured at 20 ° C. and a relative humidity of 65% for 7 days to prepare a test body. The test specimen was immersed in water for 18 hours → -20 ° C for 3 hours → 80 ° C
A 3-hour repetition test of heating and cooling was performed for 30 cycles, and changes in the state of the coating film were visually observed. At this time, evaluation was made as ○ when no swelling was observed, Δ when the swelling was slightly observed, and × when very swelled.

○ Impact resistance test First, the coating amount of the base conditioner composition was applied to the surface of a concrete plate having a size of 240 × 120 × 20 mm at 1000 g / m ^2.
16 hours after application, the undercoating material composition was applied in an amount of 200
g / m ² , and after 4 hours, a finishing material was applied, and cured at 20 ° C. and a relative humidity of 65% for 7 days was used as a test specimen. After placing the prepared test piece on the sand with the painted surface facing upward, 1
A 1 kg iron ball was dropped from a height of meters, and a change in the state of the coating film was visually observed. At this time, the evaluation was made as ○ when no cracking or peeling of the coating film was observed, and as X when cracking or peeling or the like was observed.

○ Warpage test of coating film First, an undercoat conditioner composition was applied to the surface of an asphalt block having a size of 240 × 120 × 20 at a coating amount of 1000 g / m 2.
After with the coating at ^2, coated with the amount of the undercoat material composition after 16 hours 20
The sample was applied at 0 g / m ² , and after 4 hours, a finishing material was applied. The test material was cured at 20 ° C. and a relative humidity of 65% for 7 days. Water immersion 1
A 30-cycle repetition test of heating and cooling from 8 hours to -20 ° C for 3 hours to 80 ° C for 3 hours was performed, and the warpage of the coating film was observed. When no warpage was observed, the evaluation was ○, and when warpage was observed, the evaluation was ×.

Test Results Table 5 shows the combinations of the coating materials and the test results. Good results were obtained in all of the swelling resistance test, impact resistance test, and coating film warpage test.

[0045]

[Table 5]

Example 2 A test was conducted in the same manner as in Example 1 except that the base adjustment coating material, the undercoat material, and the finishing material were combined as shown in Table 5. In addition, the finishing material is formed by three layers, applying the finishing material, applying the pattern after 2 hours, applying the finishing material, and removing the pattern after 2 hours, and applying the finishing material. Was. In the test, good results were obtained in all of the swelling resistance test, impact resistance test, and coating film warpage test.

(Comparative Example 1) A test was conducted in the same manner as in Example 1 except that the base adjustment coating material, the undercoat material, and the finishing material were combined as shown in Table 5, and the water vapor permeability of the base adjustment coating material was determined. Was low, resulting in poor swelling resistance.

(Comparative Example 2) A test was performed in the same manner as in Example 2 except that the base adjustment coating material, the undercoat material, and the finish material were changed to the combinations shown in Table 5, and the water vapor permeability of the base adjustment coating material was determined. Was low, resulting in poor swelling resistance.

(Comparative Example 3) A test was performed in the same manner as in Example 1 except that the base adjustment coating material, the undercoat material, and the finishing material were changed to the combinations shown in Table 5, and the adhesion strength of the base adjustment coating material was determined. Was low, resulting in inferior swelling resistance and inferior curl of the coating film.

(Comparative Example 4) A test was conducted in the same manner as in Example 2 except that the base adjustment coating material, the undercoat material, and the finishing material were combined as shown in Table 5, and the compressive strength of the base adjustment coating material was determined. Was low, resulting in poor impact resistance.

(Comparative Example 5) A test was conducted in the same manner as in Example 1 except that the base adjustment coating material, the undercoat material, and the finish material were changed to the combinations shown in Table 5, and the adhesion strength of the base adjustment coating material was determined. And low compressive strength, resulting in poor swelling resistance, impact resistance, and warpage of the coating film.

[0052]

According to the present invention, the coating film does not swell, exfoliates, warps, cracks, etc., has excellent adhesion, and withstands the load of humans and objects in the finish of coating using the MMA-based finishing material. In particular, it is possible to obtain a floor coating film laminating method which can be sufficiently applied even to a substrate containing a large amount of water.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D051 AA08 AB03 AF02 AG09 AG11 AG14 EA01 EA06 EB06 4D075 CA13 CA38 DC01 DC05 EB03 EB33 4J038 BA212 FA121 NA01 NA04 NA05 NA09 NA12 PA14 PB05 PC04 PC05

Claims (2)

[Claims] (1) The water vapor permeability of the floor is determined to be 40 g / m ² ··· according to JIS K5400 “General Paint Test Method” 8.17.
24 h or more, a coating film having a compression strength of 6.1 N / mm ² or more and a bonding strength of 1 N / mm ² or more according to JIS A6916 “Base adjustment coating material for finish coating material” 6.13 and 6.14 is formed. Finishing layer (C) which is formed by a finishing material containing a polymer cement base adjusting coating material layer (A), an undercoating material layer (B), a methyl methacrylate monomer and / or oligomer, paraffin and / or wax, and a polymerization catalyst. )
Are sequentially laminated. 2. A polymer cement-based base coat layer (A)
2. The floor coating laminating method according to claim 1, wherein the floor coating is formed by a polymer cement base adjustment coating material containing an epoxy resin.