KR101676277B1 - Method of constructing artificial turf ground by using PV SAND - Google Patents

Abstract

The present invention relates to a method for forming an artificial turf ground with elastic sand (PV SAND, FLEX SAND) and, more specifically, to a method for forming an artificial turf ground with elastic sand capable of securing environmental stability by coating urethane or polyethylene to a natural ore or a ceramic, maintaining a shock absorbing ability more excellent than natural sand, preventing a trampling effect and dust, maintaining an excellent water discharging capacity, and capable of preventing a temperature increase of artificial turf by obtaining excellent resistance to ultraviolet rays and excellent temperature stability. The method for forming the artificial turf ground with the elastic sand (PV SAND, FLEX SAND) according to the present invention for forming the artificial turf ground includes: a first step (S1) of installing the artificial turf (pile); a second step (S2) of forming a silica layer by filling silica in the artificial turf (pile); and a third step (S3) of forming an elastic layer by filling the elastic sand (PV SAND, FLEX SAND) in an upper part of the silica layer.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of constructing an artificial turf ground using an elastic sand (PV SAND, FLEX SAND)

TECHNICAL FIELD The present invention relates to a method of forming artificial turf ground using an elastic sand (PV SAND, FLEX SAND), which is coated with urethane or polyethylene to natural minerals or ceramics to secure environmental stability, maintain shock absorption power superior to natural sand, (Hereinafter, referred to as an 'elastic sand' in the present invention) capable of suppressing the generation of dust and maintaining excellent drainage property and having excellent ultraviolet ray resistance and temperature stability and suppressing the temperature rise of artificial turf To a method for constructing an artificial turf field.

In general, artificial turf is widely used in areas where natural light is closed, where pressure is concentrated, where climatic growth of natural grass is difficult, and where turf management is difficult.

Artificial turf has a higher initial construction cost than natural turf but it is used semi-permanently. Because of the convenience of maintenance, the surface is chosen to be suitable for exercise, the preference is increasing. In recent years, it has been widely used in dome grounds, buildings, It is being constructed.

Generally, artificial turf is put on the ground such as remicon or compaction in the artificial turf ground, and sandpaper is poured between the artificial turf so that artificial turf does not move.

In order to impart a predetermined elasticity to the artificial turf, a filling material such as a rubber chip or the like is laid on the sandpaper so that the artificial turf is buried in the filling material.

However, the rubber chip used as a filler has a problem that the surface is photocorrosidated by ultraviolet rays, the powder is scattered around, and sucked into the bronchi of infants and children, thereby impairing health.

In addition, when the user slides on artificial turf, the rubber and the skin, which are the fillers, may be rubbed and burned, and on the hot summer days, the surface temperature of artificial turf rapidly rises to high temperature. In addition, in the dry state, static electricity is generated in artificial turf, which not only causes inconvenience but also increases the risk of fire.

Korean Patent Registration No. 10-1592143 (Feb. 29, 2016) "Artificial turf filler having moisture and temperature control function and method for producing the same" Korean Patent Registration No. 10-1446458 (Apr. 24, 2014) "Elastic Filler Composition for Artificial Turf" Korean Patent Registration No. 10-1142790 (Apr. 27, 2012) "Artificial turf pierce elastic pavement, method for manufacturing the same, and construction method"

The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method for manufacturing a natural mineral or ceramic by coating urethane or polyethylene on natural mineral or ceramic to secure environmental stability, (PV SAND, FLEX SAND) which is excellent in ultraviolet ray resistance and temperature stability and can suppress the temperature rise of artificial turf is used to provide an artificial turf field. .

The problems to be solved by the present invention are not limited to those mentioned above, and other problems to be solved can be clearly understood by those skilled in the art from the following description.

As a means for attaining the above object, the present invention provides a method of forming an artificial turf field using an elastic sand (PV SAND, FLEX SAND) according to the present invention,
A first step S1 of installing a synthetic pile; A second step S2 of filling silica sand between synthetic piles to form a silica sand layer; Forming a moisture absorbing layer on the silica sand layer; And a third step (S3) of forming an elastic layer by filling an upper part of the water absorbing layer with an elastic sand (PV SAND, FLEX SAND), wherein the elastic sand (PV SAND , FLEX SAND) is a method of forming a flexible layer by coating natural mineral or ceramic as a base filler with urethane or polyethylene as a thermoplastic resin; Drying the elastic layer; Coating a nano-mixed powder coating composition obtained by mixing 30 to 50 parts by weight of a nano-mixed powder based on 100 parts by weight of a binder on the surface of the elastic layer to form an ultraviolet resistant layer; Curing the ultraviolet resistant layer; And a size classifying step of classifying the nano-mixed powder into a size larger or smaller than a size defined as the artificial turf filler, wherein the nano-mixed powder comprises nano-metal oxide and nano-silica, Shell structure in which a metal oxide is formed as a core and a shell surrounded by the nanosilica constituted by a mesoporous structure is formed on the outside, and the water absorbing layer is made of a rice husk powder obtained by pulverizing the rice husk to a particle size of 100 to 300 mesh Is mixed with a pressure-sensitive adhesive at a weight ratio of 1: 0.5 ~ 0.8 and granulated so as to have a particle size of 1 ~ 7 mm.

According to the artificial turf field forming method using the elastic sand (PV SAND, FLEX SAND) according to the present invention, urethane or polyethylene is coated on natural mineral or ceramic to ensure environmental stability, to maintain shock absorption power superior to natural sand, It is possible to provide an artificial turf playground which can suppress temperature rise by suppressing generation of dust and maintaining excellent drainage property, excellent in ultraviolet ray resistance and temperature stability.

The effects attained by the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing a conventional artificial turf using a SEBS chip (Styrene Ethylene Butylene Styrene Chip) as a filler and an artificial turf according to the present invention using an elastic sand (PV SAND, FLEX SAND) as a filler.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the following description. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Accordingly, it is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like numbers refer to like elements throughout.

In the description of the present invention, the elastic sand has the same meaning as the PV SAND or the FLEX SAND and can be optionally used.

FIG. 1 is a side cross-sectional view illustrating a conventional artificial turf using a SEBS chip (Styrene Ethylene Butylene Styrene Chip) as a filler and an artificial turf according to the present invention using an elastic sand (PV SAND, FLEX SAND) as a filler. The present invention is characterized in that the conventional SEBS chip (Styrene Ethylene Butylene Styrene Chip) is replaced with a specific filler according to the present invention.

A method for forming artificial turf ground using an elastic sand (PV SAND, FLEX SAND) according to the present invention includes a first step (S1) of installing artificial turf (pile) as follows; A second step S2 of filling silica sand between synthetic piles to form a silica sand layer; And a third step (S3) of forming an elastic sand (PV SAND) layer by filling elastic silica sand (PV SAND) on the silica sand layer.

As shown in FIG. 1, the length of the artificial turf (pile) is about 55 mm, the height of the silica sand layer is 16 ± 5 mm, the height of the elastic sand (PV SAND, FLEX SAND) layer is 15 ± 5 mm, ) 24 ± 5 mm.

The present invention is characterized in that the elastic silica sand (PV SAND) is used as a filler, and the silica sand (PV sand) is a non-crushing silica sand as a base filler, Which is coated with urethane or polyethylene as a thermoplastic resin, and more specifically can be prepared by the following method.

1. Elastic layer forming step

In the present invention, natural mineral or ceramic, which is a non-crushing silica sand as a base filler, may be coated with urethane or polyethylene as a thermoplastic resin to form an elastic layer.

The method of coating the thermoplastic resin on the base filler material can be performed by heating the thermoplastic resin to form a liquid phase, then precipitating the thermoplastic resin with the base filler, kneading the same, and then drying the thermoplastic resin to coat the thermoplastic resin on the surface of the base filler material, In this case, it is possible to use a known powder coating apparatus or the like, which is capable of continuously coating and coating a powdery material such as a rubber chip or sand, that is, a powder body, or any other known powder coating method Can be configured.

2. Ultraviolet Resistance Layer Formation Step

Next, coating a nano-mixed powder coating composition prepared by mixing 30 to 50 parts by weight of a nano-mixed powder based on 100 parts by weight of a binder on the surface of the elastic layer to form an ultraviolet resistant layer; And curing the ultraviolet ray resistant layer to form an ultraviolet ray resistance layer on the elastic layer formed as described above through an elastic sand (PV SAND, FLEX SAND) step.

The method of forming the ultraviolet ray resistant layer by coating the surface of the elastic layer with the nano-mixed powder coating composition comprises applying the nano-mixed powder coating composition comprising 100 parts by weight of the binder and 30 to 50 parts by weight of the nano-mixed powder, Then the next nano-mixed powder is applied and the binder is cured.

A method of depositing or spraying can also be used, and a known powder coating apparatus or the like which can continuously coat and coat the powder body as described above in the elastic layer forming step can be used. By using a powder coating method.

The binder is not particularly limited, and a known binder which can be easily obtained in the market can be used, so that a detailed description thereof will be omitted.

In the present invention, the nano-mixed powder is composed of a nano-metal oxide and nano-silica. In the nanocomposite powder thus constituted, the nano-metal oxide improves the temperature stability by providing ultraviolet ray shielding performance, that is, ultraviolet ray resistance, and the nano silica improves the durability of the coating layer itself.

The amount of the nano-mixed powder is preferably 30 to 50 parts by weight based on 100 parts by weight of the binder. When the amount of the nano-mixed powder is less than 30 parts by weight, it is difficult to exert ultraviolet shielding performance. When the amount is more than 50 parts by weight, The adhesion of the layer to the elastic layer is significantly lowered, and the ultraviolet ray resistant layer may be detached due to external impact or vibration.

The nano-mixed powder may be at least one selected from the group consisting of tin oxide, tungsten oxide, antimony-doped tin oxide (ATO), indium tin oxide (ITO), aluminum zinc oxide : At least one nano-metal oxide selected from the group consisting of AZO, cesium tungsten oxide (CTO), and nano-silica. The nano- And a core-shell structure in which a shell surrounding the nanosilica formed by the mesoporous structure is formed on the outside. When the nano-metal oxide and nanosilica are composed of a core-shell structure, the effects such as ultraviolet shielding performance can be maximized and improved, as compared with the case where the nanosilica and the nanosilica are simply mixed.

Generally, methods for preparing core-shell structure particles include imprinting method, associate phase seperation, coaxial electrospraying, aerosol-assisted self- However, in the present invention, the nano-mixed powder of the core-shell structure may be prepared by a self-assembly method using an aerosol.

Specifically, the self-assembly method using the aerosol uses tetraethyl orthosilicate and methyltriethoxysilane as precursors of nanosilica, cetyltrimethylammonium bromide as a surfactant, tin oxide as a nano metal oxide, and a mixture of ethylene and water as a solvent Solution, and then aerosol droplets are made using a spraying device, and these are dried and calcined to remove the surfactant.

3. Size classification stage

The size classification step of classifying the elastic sand (PV SAND, FLEX SAND) manufactured by the above method into sizes (granularity) as artificial turf filler specified by being sieved is performed to obtain a size larger than or smaller than the size defined as artificial turf filler Except for the size of the artificial turf. The size (size) of the artificial turf filler is about 0.3 to 7 mm, and it is preferable to select the size of the artificial turf pile according to the length of the synthetic turf pile and to use the filler having a size of 1 to 5 mm.

As described above, by using the elastic sand (PV SAND, FLEX SAND) prepared in the above-described manner, the silica sand is filled between the first step S1 and the artificial turf (pile) And then filling the upper part of the sandstone layer to form an elastic sand (PV SAND) layer. The third step S3 is performed.

Meanwhile, in the present invention, the moisture absorbing layer may be further formed before the third step (S3) of forming the elastic layer (PV SAND, FLEX SAND) layer.

That is, the fibrous material having the above-mentioned water-absorbing ability can be stored by absorbing a certain amount of moisture at the time of rain or water supply by filling a material composed of long and short fibers such as rice hull, hull, hemp and cork. As an example, rice husk, a kind of natural fibrous material with water absorption ability, is a shell of rice and has a high water absorption rate and high moisture content, so that it absorbs and retains a certain amount of water in a rainy season. In addition, the rice hull has a buffering property and functions as a buffer when used as a synthetic grass filler.

In the present invention, more preferably, the rice hull powder obtained by pulverizing rice husk to a particle size of 100 to 300 mesh is mixed with a pressure-sensitive adhesive as a natural material such as a wheat flour at a weight ratio of 1: 0.5-0.8, May be granulated in a ring form so as to have a size of about 1 to 7 mm, and then dried or cured. Thus, when the rice husk powder is granulated with an adhesive, water absorption and buffering action of the rice husk can be maximized more than when using the rice husk itself.

The water absorbing layer is formed by minimizing the height (16 +/- 5 mm and 15 +/- 5 mm) of the sand layer and the elastic sand (PV SAND, FLEX SAND) layer as shown in Fig. 1 Height.

A first step S1 of installing a synthetic pile; A second step S2 of filling silica sand between synthetic piles to form a silica sand layer; And a third step (S3) of forming an elastic sand (PV SAND, FLEX SAND) layer by filling an elastic sand (PV SAND or FLEX SAND) on the silica sand layer. Here, the elastic sand (PV SAND, FLEX SAND) was prepared in the following manner.

A natural mineral or ceramic containing non-crushing silica sand is coated with urethane and dried to form an elastic layer, and 40 parts by weight of a nano-mixed powder based on 100 parts by weight of a binder is mixed with a nano-mixed powder coating The composition was coated and cured to form an ultraviolet resistance layer. After the size classification step, an elastic sand (PV SAND, FLEX SAND) was prepared as a filler for artificial turf.

A first step S1 of installing a synthetic pile; A second step S2 of filling silica sand between synthetic piles to form a silica sand layer; Forming a moisture absorbing layer on the silica sand layer; And a third step (S3) of forming an elastic layer by filling an upper part of the water absorbing layer with an elastic sand (PV SAND, FLEX SAND). Here, the elastic sand (PV SAND, FLEX SAND) was prepared in the same manner as in Example 1, and the water absorbing layer was prepared in the following manner.

The rice husk ring was prepared by mixing the rice husk powder and the pressure-sensitive adhesive at a weight ratio of 1: 0.7 and then granulating into a ring having a diameter of 3 to 5 mm.

[Comparative Example 1]

Artificial turf for testing was prepared by the same method as in Example 1 using SEBS chip (Styrene Ethylene Butylene Styrene Chip) as a filler for artificial turf.

Compared with the rubber chips of Examples 1 and 2, the impact absorbing capacity of Comparative Example 1 was better than that of the rubber chip, the reaction pressure and dust generation were relatively few, the ultraviolet resistance and the temperature stability were excellent, It is possible to suppress the temperature rise of the semiconductor device.

Particularly, in the case of Example 2, when water was sprayed on the raindrops or artificial turf by the water absorbing layer, the water was absorbed and stored in the water to control the water content and the temperature control Function.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the limitations of the invention, It is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should be construed as including all embodiments falling within the scope of the appended claims.

Claims (1)

In constructing artificial turf ground,
A first step S1 of installing a synthetic pile; A second step S2 of filling silica sand between synthetic piles to form a silica sand layer; Forming a moisture absorbing layer on the silica sand layer; And a third step (S3) of forming an elastic layer by filling an upper part of the water absorbing layer with an elastic sand (PV SAND, FLEX SAND)
The elastic sand (PV SAND, FLEX SAND) in the second step (S2)
Coating a natural mineral or ceramic as a base filler with urethane or polyethylene as a thermoplastic resin to form an elastic layer; Drying the elastic layer; Coating a nano-mixed powder coating composition obtained by mixing 30 to 50 parts by weight of a nano-mixed powder based on 100 parts by weight of a binder on the surface of the elastic layer to form an ultraviolet resistant layer; Curing the ultraviolet resistant layer; And a size classifying step of classifying the artificial turf filler into a size larger or smaller than the size defined as the artificial turf filler,
The nano-
Shell structure in which the nano-metal oxide is formed as a core and the outer shell is formed of a mesoporous nano-silica as a shell, the nano-metal oxide being composed of a nano-metal oxide and a nanosilica,
The water-
The rice hull powder obtained by pulverizing the rice hull to a particle size of 100 to 300 mesh is mixed with a pressure-sensitive adhesive at a weight ratio of 1: 0.5 to 0.8, and filled as a granular artificial turf filler granulated to have a particle size of 1 to 7 mm A method of forming artificial turf ground using elastic sand (PV SAND, FLEX SAND).

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