KR101325024B1 - A construction process of non-slip pavement of tennis court and its top coating composition - Google Patents

Abstract

The present invention relates to a construction method of a nonslip pavement for a tennis court. Particularly, the construction method is as follows. An elastic layer which uses polyurethane or rubber chips is spread on the surface of asphalt or concrete. A primer layer, an intermediate coating layer, and a top coating layer are successively spread on the elastic layer using water-soluble polyurethane acrylate as a binder. The nonslip pavement has the same friction coefficient as an acryl-based floor material and has rebound resilience which is similar to a polyurethane-based floor material.

Description

A construction process of non-slip pavement of tennis court and its top coating composition}

The present invention relates to a method for constructing a non-slip flooring material for tennis courts and a top coat layer composition thereof. To describe in detail, an elastic layer using polyurethane or a rubber chip is applied to an asphalt or concrete base surface, and a water-soluble polyurethane is placed thereon. Application method of the non-slip flooring material for tennis courts by applying a primer layer, an intermediate layer, and a top coat layer using acrylate (IPN) as a binder in order to have the same coefficient of friction as the acrylic flooring material and to have a resilience similar to that of the polyurethane flooring material. And a top coat layer composition thereof.

Recently, as interest in health and the population of sports for living increase, sports facilities such as tennis courts, in-line skating rinks, and multi-purpose stadiums are being built around the living spaces such as school playgrounds, neighborhood parks, and apartments. There is a trend to apply synthetic resin flooring to prevent safety accidents caused by the weather and to be able to use the four seasons regardless of climate change.

Conventional resin flooring materials mainly used for this purpose include a polyurethane-based flooring material coated with a polyurethane resin layer having excellent mechanical and chemical properties on an asphalt or concrete base surface, and an acrylic flooring material coated with an acrylic resin.

First, polyurethane-based flooring has the advantage of being able to express wear resistance and various colors, but there is a high possibility that the user may be injured by sliding accidents due to the lack of surface slip resistance, and control of a tennis ball, for example, when used as flooring for a cornice court. There is a problem that this is not accurate and lowers the playing performance.

On the other hand, the acrylic flooring material has no voids on the surface, there is no water pooling and there is no sliding phenomenon, but the resilience is lower than the polyurethane flooring material has a disadvantage of amplifying the fatigue of the user. Thus, in order to increase the elasticity of the acrylic flooring material, an elastic layer in which rubber chips and acrylic resins are mixed is used. However, in this case, it is difficult to form the thickness of the elastic layer, and the leveling property of the bottom surface is poor due to the aggregation of rubber chips. There is a difficult construction problem.

In addition, the acrylic flooring material has a problem such as a sudden drop in physical properties due to the thermal shock, the stickiness caused by the lack of low temperature flexibility, swelling due to long-term moisture immersion, surface cracks, etc., in order to prevent the sliding phenomenon Due to particle non-uniformity of silica, which is mainly used, for example, the bounding of tennis balls has a non-uniform problem.

In order to solve these problems, a method of mixing a water-dispersed polyurethane with a small change over time and excellent adhesion to an acrylic flooring material has been proposed in the related art, but in this case, it is only a simple physical mixing of the acrylic resin and the polyurethane resin. Phase separation and durability deterioration due to differences in compatibility parameters are likely to occur, and since these two resins exhibit the same properties, there is a problem in that they cannot exhibit uniform physical properties.

On the other hand, the present applicant in the patent registration No. 10-592914 (registration date; 2006.06.16.) The all-weather tennis court coated with an acrylic surface layer on the urethane elastic layer to supplement the disadvantages of the conventional urethane-based flooring and acrylic-based flooring and to take advantage of the advantages I have suggested. The tennis court has a glass transition temperature of -70 ~ 10 ℃ water-soluble acrylic resin and plasticizer, and the particle size of the AFS on the elastic layer. NO. By applying the non-slip layer made of silica sand of 30 to 170, it has the advantage of having a resilience similar to the urethane-based coat while maintaining the same friction coefficient as the acrylic resin tennis court, but the adhesion between the elastic layer and the non-slip layer is poor There is a possibility of causing delamination, and due to the particle non-uniformity of the silica sand used as the non-slip agent, it is not possible to maintain uniform non-slipness and bounding properties and to completely solve the problems of the acrylic resin, and thus there is room for improvement. Remained.

Patent Registration No. 10-592914 (Registration Date; 2006.06.16.) Patent Registration No. 10-1009997 (Registration Date; 2011.01.14) Patent Registration No. 10-1009998 (Registration Date; 2011.01.14)

Therefore, the problem to be solved by the present invention has the same friction coefficient as acrylic flooring and resilience similar to polyurethane flooring, water resistance, problems of acrylic flooring, physical properties due to temperature shock, summer break, winter surface cracking, and adhesive strength deterioration. The present invention relates to a method for constructing a non-slip flooring for tennis courts and a top coat layer composition thereof, which can solve the problem and improve adhesion to the elastic layer to prevent interlayer delamination.

The construction method of the non-slip flooring for tennis courts according to the present invention comprises the steps of: A) applying an adhesive on the lower surface, and applying an elastic layer thereon; B) 25 to 60% by weight of water-soluble polyurethane acrylate, 5 to 15% by weight of acrylic resin, 30 to 45% by weight of urethane emulsion, and 5 to 15% by weight of additives, and the glass transition temperature is -40 to 30 ° C. Applying a primer layer comprising a binder composition having a solid content of 20 to 100% by weight, 20 to 300 parts by weight of a non-slip agent, and 0.5 to 10 parts by weight of a crosslinking agent with respect to 100 parts by weight of a solid content of the binder composition; C) 25 to 60% by weight of water-soluble polyurethane acrylate, 20 to 35% by weight of acrylic resin, 15 to 25% by weight of urethane emulsion and 5 to 15% by weight of additives, glass transition temperature is -40 to 30 ° C, Applying a middle layer comprising 20 to 300 parts by weight of a non-slip agent with respect to a binder composition having a solid content of 20 to 100% by weight and 100 parts by weight of a solid content of the binder composition; D) 25 to 60% by weight of water-soluble polyurethane acrylate, 30 to 45% by weight of acrylic resin, 5 to 15% by weight of urethane emulsion and 5 to 15% by weight of additives, glass transition temperature is -40 to 30 ° C, Applying a top coat layer comprising 20 to 300 parts by weight of a non-slip agent and 0.5 to 10 parts by weight of a crosslinking agent with respect to a binder composition having a solid content of 20 to 100% by weight, and 100 parts by weight of a solid content of the binder composition; And a control unit.

In addition, the top coat composition of the non-slip flooring material for tennis courts according to the present invention, 25 to 60% by weight of water-soluble polyurethane acrylate, 30 to 45% by weight of acrylic resin, 5 to 15% by weight of urethane emulsion and 5 to 15% by weight of additives %, The glass transition temperature is -40 ~ 30 ℃, solid content of the binder composition 20 to 100% by weight, 20 to 300 parts by weight of the non-slip agent with respect to 100 parts by weight of solid content of the binder composition, crosslinking agent Characterized in that it comprises 0.5 to 10 parts by weight.

In the method of constructing the non-slip flooring according to the present invention, a water-soluble polyurethane acrylate resin is used as a binder, and the water-soluble polyurethane acrylate resin is polymerized with acrylic in the water-dispersed polyurethane to form entanglements of chains. In addition, the two resin components cause physical and chemical bonds to each other, so that the glass transition temperature (Tg) is integrated into one, so that cracks may occur on the surface of the flooring material, and problems such as adhesion, elongation rate, water resistance, and weather resistance decrease may be solved. At low temperatures, the elasticity is lowered and the surface may become sticky at high temperatures.

1 shows a DSC thermogram for a mixture of an acrylic resin and a urethane resin,
Figure 2 shows the DSC thermogram for the water-soluble polyurethane acrylate used as a binder in the present invention.

Hereinafter, the configuration and operation of the present invention in detail. However, even if the configuration is essential to practice the present invention, a detailed description of the configuration that can be easily implemented by a person skilled in the art from the known technology will be omitted. In addition, in the present invention, the name of the invention for convenience, named 'non-slip flooring for tennis court', but the use of the non-slip flooring is not necessarily limited to the tennis court, the scope of the present invention is limited by this use. It's not going to happen.

The construction method of the non-slip flooring for tennis courts according to the present invention includes an elastic layer coating step (A), a primer layer coating step (B), a middle layer coating step (C), and a top coat layer coating step (D). .

First, in the elastic layer applying step (A), first, urethane, acrylic, water-based epoxy-based adhesive is applied on a base surface coated with concrete or cement, and an elastic layer is applied thereon, wherein the elastic layer is then first to fifth elastic. It consists of any one elastic layer selected from the layers.

First, the first elastic layer is to apply at least any one or more of a rigid polyurethane layer having a hardness of shore A 40-60, and a rigid polyurethane layer having a hardness of shore A 60-80 with a thickness of 2-10 mm. The first elastic layer is easy to control the thickness and elasticity, and has the advantage of excellent smoothness of the floor surface, but has a disadvantage of high construction cost, is suitable for stadium application used by professional athletes.

Next, the second elastic layer is mixed with 100 parts by weight of a rubber chip having a size of 1 to 5 mm and 10 to 30 parts by weight of a urethane binder, and applied to a thickness of 3 to 15 mm, and a seal made of a water-soluble acrylic resin and silica sand or rubber powder thereon. It is to apply a layer. The sealer layer functions to fill gaps between the rubber chip and the urethane binder.

The second elastic layer has the advantage of high elasticity, easy to form thickness and low construction cost, is suitable for the application of school playground mainly used by amateurs, elementary and middle school students who require high elasticity.

The third elastic layer is a rubber chip having a size of 1 to 5mm and aggregates of 0.2 to 5mm in size by mixing 100 parts by weight of the filler mixed with a weight ratio of 10: 2 to 30 and 10 to 30 parts by weight of the urethane binder 3 ~ It is applied with a thickness of 15 mm, and a sealer layer made of water-soluble acrylic resin and silica sand or rubber powder is applied thereon. The third elastic layer has a lower elasticity than the second elastic layer, is easy to form thickness, has a low construction cost, and is suitable for application to a professional stadium.

In the second and third elastic layers, the urethane binder has a viscosity of 1,500 ~ 8,000 cps / 23 ℃, isocyanate content of 3.0 to 10.0%, solid content of 90% by weight or more, specific gravity of 0.9 or more used It is desirable to. When the content of the urethane binder is less than 10 parts by weight based on 100 parts by weight of the filler, the bonding strength of the elastic layer is too weak. On the contrary, when the content of the urethane binder is more than 30 parts by weight, the porosity decreases and the elasticity is lowered.

The fourth elastic layer is to apply a polyurethane to a thickness of 2 ~ 10mm according to the desired elasticity on the second elastic layer or the third elastic layer, respectively, it is excellent in the smoothness of the floor surface and easy to form the thickness of the elastic layer And it is suitable when a high elasticity and a thick thickness of the elastic layer is required.

The fifth elastic layer is to apply a rubber mat made of foam rubber selected from EPDM, EVA, SBR, NBR or rubber chips having a size of 1 to 5 mm to a thickness of 3 to 100 mm, using a rubber mat molded in advance at the factory Since the construction period is short, there is an advantage that can maintain a constant elasticity.

Next, the primer layer coating step (B) is applied by mixing 20 to 300 parts by weight of the non-slip agent and 0.5 to 10 parts by weight of the crosslinking agent with respect to 100 parts by weight of the solid composition of the binder composition, and in the intermediate layer coating step (C) Only 20 to 300 parts by weight of the non-slip agent is mixed and applied to 100 parts by weight of solid content. Finally, in the top coat layer (D), 20 to 300 parts by weight of the non-slip agent and the crosslinking agent are again applied to 100 parts by weight of the solid composition of the binder composition. Apply by mixing 0.5-10 parts by weight.

At this time, the configuration and function of the non-slip agent and the crosslinking agent used in each step is the same. However, the following differences in the composition of the binder composition.

That is, the binder composition used in the primer layer coating step (B) is composed of 25 to 60% by weight of water-soluble polyurethane acrylate, 5 to 15% by weight of acrylic resin, 30 to 45% by weight of urethane emulsion and 5 to 15% by weight of additives. The binder composition used in the middle layer coating step (C) is composed of 25 to 60% by weight of water-soluble polyurethane acrylate, 20 to 35% by weight of acrylic resin, 15 to 25% by weight of urethane emulsion, and 5 to 15% by weight of additives. The binder composition used in the top coat layer (D) is composed of 25 to 60% by weight of water-soluble polyurethane acrylate, 30 to 45% by weight of acrylic resin, 5 to 15% by weight of urethane emulsion, and 5 to 15% by weight of additives. .

In other words, the binder composition is all composed of water-soluble polyurethane acrylate and acrylic resins, urethane emulsions and additives, the content of water-soluble polyurethane acrylate and additives are all the same as 25 to 60% by weight and 5 to 15% by weight, respectively. However, the contents of the acrylic resin and the urethane emulsion change in inverse directions to each other.

That is, the content of acrylic resin increases little by little from 5 to 15% by weight to 20 to 35% by weight and 30 to 45% by weight from the primer layer to the middle and top layers, on the contrary, the content of urethane emulsion is 30 to 45% by weight. The percentage decreases from 15 to 25% by weight and 5 to 15% by weight. Herein, as the content of acrylic resin increases and the content of urethane emulsion decreases, the binder composition exhibits excellent light resistance, abrasion resistance, and chemical resistance. The binder composition exhibits excellent adhesion, water resistance and low temperature flexibility.

In the present invention, the water-soluble polyurethane acrylate constituting the binder composition is swelled by adding an acrylic monomer to the water-dispersed polyurethane prepared using a polyol substituted with a hydrophilic ion group (COOH, SO ₃ Na), APS And synthesized by adding an oxidation and reduction catalyst. If the content of the water-soluble polyurethane acrylate is less than 20% by weight exhibits properties belonging to the glass transition temperature range of the acrylic resin and the urethane emulsion relatively may cause problems appearing in acrylic flooring, on the contrary, if it exceeds 60% by weight There is a problem in that the physical properties of the primer, the middle layer, and the top layer are not easily controlled.

Generally, the acrylic resin has a glass transition temperature of about 19.37 ° C., and surface cracks may occur at low temperatures. In addition, the urethane resin has a glass transition temperature of about -30.74 ° C, which is excellent in low temperature flexibility, but may cause stickiness at high temperatures.

1 shows a DSC thermogram of a simple mixture of an acrylic resin and a urethane resin, and shows a glass transition temperature (Tg) of the urethane resin at -49.36 ° C, and a glass transition temperature (Tg) of the acrylic resin at 19.74 ° C. Shows the status shown. Therefore, the mixture can confirm that the two resin components are simply mixed and dispersed without chemical bonding.

On the other hand, Figure 2 shows a DSC thermogram for the water-soluble polyurethane acrylate used as a binder in the present invention, showing a state in which only one glass transition temperature (Tg) at -36.74 ℃. Therefore, the water-soluble polyurethane acrylate can be confirmed that the two resin components are in a stable state physically as well as chemically bonded to each other as the acrylic resin swells in the polyurethane. The manufacturing method of the water-soluble polyurethane acrylate is described in detail in Patent Registration No. 10-1009997 (Registration Date; 2011.01.14) and Patent Registration No. 10-1009998 (Registration Date; 2011.01.14) of the present application. .

In addition, the acrylic resin is a copolymer of a styrene monomer and an acrylic monomer, or a polymer composed of only an acrylic monomer, the glass transition temperature is used that is -70 ~ 30 ℃.

In addition, the urethane emulsion uses a polyol having a molecular weight of 500 to 3,000, a polyisocyanate, a chain extender, or the like.

The additive may include one or more selected from silica, calcium carbonate (CaCO ₃ ), talc, and hard coal, and have a particle size of 0.5 to 30 μm; Or at least one sedimentation inhibitor selected from clay and fumed silica used for the purpose of sedimentation prevention; A reinforcing agent having a particle size of 0.1 to 5 mm as at least one selected from glass fibers, ceramic fibers, filaments, and chemical yarns; Or a toner representing the color of the resin; Or antifoaming agents used for the purpose of bubble removal; Or thickeners in organic or inorganic form; Use any one or more of the following.

If the content of the additive is less than 5% by weight, there is a problem of matting, viscosity control, non-slip agent precipitation, surface pinhole generation, etc. On the contrary, if the content of the additive is more than 15% by weight, the physical properties of the resin are deteriorated.

In the present invention, the non-slip agent is any one or more selected from artificial silica sand, aluminum oxide (Al ₂ O ₃ ), glass beads (Glass bead), it is preferable to use a particle size of 40 ~ 1,000㎛. In particular, it is preferable to use the non-slip agent having a uniform particle size in order to match the surface non-slip degree of the international standard.

In addition, when the content of the non-slip agent is less than 20 parts by weight based on 100 parts by weight of the solid content of the binder composition, it is difficult to form uniform non-slip properties. On the contrary, when the content of the non-slip agent exceeds 300 parts by weight, the adhesive force is reduced due to the detachment of the non-slip agent. Or there is a risk of cracking, which is not good. The non-slip agent may be mixed with the binder composition in advance in the process of producing a binder composition, or may be directly mixed with the resin mixture at the construction site.

Finally, the crosslinking agent has a function of improving water resistance, adhesion, abrasion resistance, chemical resistance, light resistance, and the like, and may include an isocyanate group. If the content of the crosslinking agent is less than 0.5 parts by weight based on 100 parts by weight of the solid content of the binder composition, there is a problem in that the crosslinking effect is weak and an improvement in physical properties cannot be expected. On the contrary, when the content of the crosslinking agent exceeds 10 parts by weight, an isocyanate group remains to cause an addition reaction. There exists a problem that the physical property of a coating film falls.

In the present invention, the elastic layer has a function of imparting elasticity, and the primer layer has a function of holding each other so that no layer separation occurs between the elastic layer and the intermediate layer, the intermediate layer has a relatively large particle size The non-slip agent is used to form the thickness of the coating film, and the top coat layer functions to determine the non-slip property of the surface as the actual surface layer.

Therefore, the primer layer, the middle layer and the top layer is preferably a viscosity of 2,000 ~ 8,000cps / 25 ℃, if the viscosity is less than 2,000cps / 25 ℃ it is difficult to uniform coating due to the aggregation of the egg slip agent 8 000cps If it exceeds / 25 ℃, there is a problem that the flow is reduced and construction is difficult.

Hereinafter, examples of the present invention will be described.

[Example]

One) On the primer layer  For test

Apply urethane adhesive on a conventional concrete base layer, and apply a first elastic layer consisting of 3mm thick semi-hard urethane with a hardness of 60 Shore A and 2mm thick hard urethane with a hardness of 80 Shore A. The primer layer was apply | coated using the samples A1-A7 which consist of the same component and composition ratio.

Glass transition temperature (Tg) of the resin components (water-soluble polyurethane acrylate + acrylic resin + urethane emulsion) of the samples A1 to A7, crack generation of the applied primer layer and the adhesive strength between the elastic layer and the primer layer It measured and the result is shown in following FIG.

In the following Table 1 'IPN' refers to a water-soluble polyurethane acrylate. As the additive, silica, glass fiber, toner, antifoaming agent, and organic thickener were used. As the non-slip agent, artificial silica No. 7 having a particle size of 0.1 to 0.35 mm in A1 to A7 was used. As a crosslinking agent, an isocyanate group content of 21.4%, Hydrophilic aliphatic polyisocyanates having a viscosity of 8 000 mPas / 25 ° C were used.

ingredient A1 A2 A3 A4 A5 A6 A7

Fryer
Layer IPN 40 40 40 50 50 55 60 Acrylic resin 5 10 15 5 10 5 5 Urethane emulsion 45 40 35 35 30 30 30 additive 10 10 10 10 10 10 10 Egg slip 300 100 100 100 100 100 100 Cross-linking agent 3 3 3 3 3 3 3 Tg (℃) of resin component -14.63 -10.66 -6.57 -13.03 -9.01 -12.22 -25.86 Crack generation (5 ℃) X X X X X X X Adhesive strength (N / mm²) 2.4 2.3 2.2 2.5 2.55 2.6 2.8

In Table 1, the occurrence of cracking of the primer layer was visually observed after standing for 3 hours at a temperature of 5 ℃, the adhesive strength between the elastic layer and the primer layer is KS cited standard concrete protective coating agent ( KS F 4936) was tested by the test for adhesion strength (N / mm²).

2) On the middle floor  For test

Above the primer layer using the sample A7 with the highest adhesive strength in Table 1, using the samples B1 to B5 consisting of the components and composition ratios as shown in Table 2, the intermediate layer was applied to a thickness of 1mm. The glass transition temperature (Tg) and crack generation (5 ° C.) of the intermediate layers of the resin components of Samples B1 to B5 were measured, and the results are shown in Table 2 below.

In the following Table 2, the additive was the same as used in Table 1, the non-slip agent is 0.7 ~ 1.2mm artificial silica sand No. 5, No. 7 with a particle size of 0.1 ~ 0.35mm, particle size is less than 0.2mm No. 8, Al₂O₃ # 60, and EPDM rubber chips with particle size of 1 ~ 5mm were used.

ingredient B1 B2 B3 B4 B5

Middle class IPN 45 45 45 45 45 Acrylic resin 30 30 30 30 30 Urethane emulsion 15 15 15 15 15 additive 10 10 10 10 10
Whistle
Lip Artificial silica (No. 5) 100 Artificial Silica (No. 7) 100 Artificial Silica (No. 8) 100 Al₂O₃ (# 60) 100 Rubber Chip (1 ~ 5mm) 100 Tg (℃) of resin component 7.45 7.45 7.45 7.45 7.45 Crack generation (5 ℃) O X X O O

3) On the upper floor  For test

On the middle layer using the sample B2 in Table 2, using the samples C1 to C7 consisting of the components and composition ratios shown in Table 3, the top layer was applied to a thickness of 0.3mm. At this time, the additive used was the same as in Table 1, the non-slip agent artificial silica No. 7 and No. 8, glass beads (200㎛), Al₂O₃ # 120 was used.

The glass transition temperature (Tg) and crack occurrence of the top coat layer (5 ° C.), slip resistance and abrasion resistance, and the surface non-slip state of the resin components of the samples C1 to C7 were measured, and the results are listed in the following Table 3. It was.

ingredient C1 C2 C3 C4 C5 C6 C7
Top layer IPN 50 55 55 55 55 55 55 Acrylic resin 30 30 30 30 30 30 30 Urethane emulsion 10 5 5 5 5 5 5 additive 10 10 10 10 10 10 10 Whistle
Lip No. 7 100 100 50 200 No. 8 100 Glass Beads (200㎛) 100 Al ₂ O ₃ (# 120) - - - - 100 Cross-linking agent 3 3 3 3 3 3 3 Resin Powder Tg (℃) 8.39 9.04 9.04 9.04 9.04 9.04 9.04 Crack generation (5 ℃) X X X O X X X Slip Resistance (BPN) 80 80 76 88 79 63 102  Abrasion resistance (mg) 163 163 152 186 158 111 105 Surface non-slip state Good Good Bad Bad Good Good Good

In Table 3, the slip resistance was tested according to the slip resistance test method (KS F 2375) of the KS cited standard road surface, the wear resistance was tested by CS-17 wheel, 1000g weight, 1000cycles according to ASTM D 4060, The slip state was visually confirmed whether the non-slip agent was evenly applied.

4. On the elastic layer  For test

Next, the elastic layers D1 to D9 were constructed in the same manner as in [Table 4], and the tennis courts were coated on the primer layer using the sample A5, the intermediate layer using the sample B2, and the top coat layer using the sample C5. It was constructed. At this time, the thicknesses of the primer layer, the middle layer, and the top layer were 1.5 mm, respectively.

Resilience (%) was measured for each tennis court constructed on the elastic layers D1 to D9, and the results are shown in the following [Table 4].

division D1 D2 D3 D4 D5 D6 D7 D8 D9 First elastic layer Thickness of the semi-rigid layer (mm) 3 - 2 - - 2 - 2 - Hard layer thickness (mm) 2 3 2 - - 2 - 2 - Thickness of the second elastic layer (mm) - - - 7 3 7 - - - Third elastic layer Mixing ratio of rubber chips and aggregate - - - - - - 7: 3 7: 3 - Thickness (mm) - - - - - - 7 7 - Thickness of the fifth elastic layer (mm) - - - - - - - - 7 Resilience (%) 47 41 45 55 50 57 51 53 52

In Table 4, the second elastic layer and the third elastic layer was blended with 20 parts by weight of a urethane binder in 100 parts by weight of the rubber chip, 50 parts by weight of silica sand or rubber powder or a mixture thereof in water-soluble acrylic resin as a sealer layer In D6 and D8, the first elastic layer was applied after first applying the second elastic layer and the third elastic layer. And resilience was measured according to KS M 6518.

As can be seen from the results of Table 4, the tennis court constructed according to the embodiment of the present invention exhibits a wide range of rebound elasticity according to the type of elastic layer. Therefore, the non-slip flooring according to the present invention may be applied to a tennis court having various elasticity as needed, and may also be used in addition to a tennis court, or a multi-purpose playground, a foot ball court, a basketball court, an inline skating rink, a badminton stadium, or the like.

Claims (9)

A) applying an adhesive on the bottom surface, and applying an elastic layer thereon;
B) 25 to 60% by weight of water-soluble polyurethane acrylate, 5 to 15% by weight of acrylic resin, 30 to 45% by weight of urethane emulsion, and 5 to 15% by weight of additives, and the glass transition temperature is -40 to 30 ° C. Applying a primer layer comprising a binder composition having a solid content of 20 to 100% by weight, 20 to 300 parts by weight of a non-slip agent, and 0.5 to 10 parts by weight of a crosslinking agent with respect to 100 parts by weight of a solid content of the binder composition;
C) 25 to 60% by weight of water-soluble polyurethane acrylate, 20 to 35% by weight of acrylic resin, 15 to 25% by weight of urethane emulsion and 5 to 15% by weight of additives, glass transition temperature is -40 to 30 ° C, Applying a middle layer comprising 20 to 300 parts by weight of a non-slip agent with respect to a binder composition having a solid content of 20 to 100% by weight and 100 parts by weight of a solid content of the binder composition;
D) 25 to 60% by weight of water-soluble polyurethane acrylate, 30 to 45% by weight of acrylic resin, 5 to 15% by weight of urethane emulsion and 5 to 15% by weight of additives, glass transition temperature is -40 to 30 ° C, Applying a top coat layer comprising 20 to 300 parts by weight of a non-slip agent and 0.5 to 10 parts by weight of a crosslinking agent with respect to a binder composition having a solid content of 20 to 100% by weight, and 100 parts by weight of a solid content of the binder composition;
Construction method of the non-slip flooring for tennis courts comprising a.
The method of claim 1, wherein the elastic layer,
A first elastic layer for applying a thickness of 2-10 mm to at least one of a rigid polyurethane layer having a hardness of Shore A 40 to 60 and a rigid polyurethane layer having a hardness of Shore A 60 to 80;
Alternatively, 100 parts by weight of a rubber chip having a size of 1 to 5 mm and 10 to 30 parts by weight of a urethane binder are mixed and applied to a thickness of 3 to 15 mm, and a sealant layer made of water-soluble acrylic resin and silica sand or rubber powder is coated thereon. 2 elastic layer;
Alternatively, a rubber chip having a size of 1 to 5 mm and an aggregate having a size of 0.2 to 5 mm are mixed with 100 parts by weight of a filler blended at a weight ratio of 10: 2 to 30 and 10 to 30 parts by weight of a urethane binder to a thickness of 3 to 15 mm. A third elastic layer applied to and applying a sealer layer made of water-soluble acrylic resin and silica sand or rubber powder thereon;
Or, the fourth elastic layer for applying a polyurethane to the thickness of 2 ~ 10mm, respectively on the second elastic layer or the third elastic layer;
Or a fifth elastic layer for applying a rubber mat made of foam rubber or rubber chips having a size of 1 to 5 mm to a thickness of 3 to 100 mm;
Construction method of non-slip flooring for tennis courts, characterized in that any one selected from.
According to claim 2, wherein the urethane binder of the second elastic layer and the urethane binder of the third elastic layer, the viscosity is 1,500 ~ 8,000cps / 23 ℃, the isocyanate content is 3.0 ~ 10.0%, the solid content is 90% by weight Above, the construction method of the non-slip flooring for tennis courts, characterized in that the specific gravity is used more than 0.9.
The method of claim 1, wherein the binder composition increases the acrylic resin content from the primer layer to the middle layer and the top layer, and decreases the urethane emulsion content.
The method of claim 1 or 4, wherein the water-soluble polyurethane acrylate is swelled by adding an acrylic monomer to the water-dispersed polyurethane prepared using a polyol substituted with a hydrophilic ion group, and then subjected to APS, oxidation and reduction catalysts. Construction method of non-slip flooring for tennis courts, characterized in that synthesized by the method of addition.
The tennis ball according to claim 1 or 4, wherein the acrylic resin is a copolymer of a styrene monomer and an acrylic monomer or a polymer composed only of an acrylic monomer, and has a glass transition temperature of -70 to 30 ° C. Construction method of non-slip flooring for coat.
The method according to claim 1 or 4, wherein the additive,
One or more selected from silica, calcium carbonate (CaCO ₃ ), talc, and hard coal, and having a particle size of 0.5 to 30 μm;
Or any one or more sedimentation inhibitors selected from clay and fumed silica;
Or a reinforcing agent having a particle size of 0.1 to 5 mm as at least one selected from glass fibers, ceramic fibers, filaments, and chemical yarns;
Or a toner representing a color;
Or antifoaming agents used for the purpose of removing bubbles;
Or thickeners selected from organic or inorganic forms;
Construction method of non-slip flooring for tennis courts, characterized in that any one or more selected from.
According to claim 1 or 2, wherein the non-slip agent is any one or more selected from artificial silica, aluminum oxide (Al ₂ O ₃ ), glass beads (Glass bead), characterized in that the particle size of 40 ~ 1,000㎛ Construction method of non-slip flooring for tennis court to use.
It is composed of 25 to 60% by weight of water-soluble polyurethane acrylate, 30 to 45% by weight of acrylic resin, 5 to 15% by weight of urethane emulsion and 5 to 15% by weight of additives, and has a glass transition temperature of -40 to 30 ° C. The non-slip flooring for tennis courts, comprising 20 to 300 parts by weight of the non-slip agent and 0.5 to 10 parts by weight of the crosslinking agent with respect to the binder composition of 20 to 100% by weight, 100 parts by weight of the binder composition. Top layer composition.

Images