KR101009390B1 - Polyolefin fiber with excellent flame retardant property and weatherabilith for artificial turf, and artificial turf utilizing the same - Google Patents

Abstract

PURPOSE: A polyolefin thread with an excellent flame retardant property and an excellent weather proof property for an artificial turf, and an artificial turf structure using the same are provided to enable an artificial turf structure to include a HALS flame retardantnd a polyolefin resin, thereby preventing fire. CONSTITUTION: A polyolefin thread for an artificial turf is formed by a melted mixture. The melted mixture includes polyolefin resin 100 weight, HALS-triazine flame retardant 0.3~2.0 weight, coloring agent 1~10 weight, light stabilizing agent 0.1~3.0 weight, ultraviolet absorbing agent 0.1~3.0 weight, and antioxidant 0.1~3.0 weight. An artificial turf structure(200) includes a foam layer(10), a pile(20), and a support layer(30).

Description

Polyolefin fiber with excellent flame retardant property and weatherabilith for artificial turf, and artificial turf utilizing the same}

The present invention relates to a polyolefin-based yarn for artificial turf having excellent flame retardancy and weather resistance, and an artificial turf structure using the same. More specifically, the present invention relates to a melted mixture including a polyolefin-based resin and a HALS-based flame retardant. The present invention relates to a polyolefin-based yarn for artificial turf and an artificial turf structure using the same as a material for a pile or a bubble layer.

In the case of polyamide fibers and polyester fibers, the melting point is high (usually 200 ° C. or more), and the functional groups at the ends of the polymer are polarized to achieve flame retardant performance by post-processing treatment (dyeing and flame retardant treatment) after fiber production. In the case of such a material to look at an example of a process for implementing the flame retardant performance, it is made of a conventional post-processing method that is padded or immersed in the flame retardant aid on the fiber and fiber tissue, and dried and then cured.

On the other hand, artificial turf products are generally composed of a support layer consisting of bubble paper, pile piled on the bubble paper, and a resin coated on the bottom surface of the bubble paper, and the pile material is polyamide fiber (nylon) and the bubble paper supporting the In the case of woven or non-woven fabric of polyester fiber, it was possible to realize flame retardant performance by post-processing, but because of the high friction property of polyamide fiber (nylon), it is easy to cause skin burns when a player falls down during the game. The burden on the ankle turn was so great that it was not suitable for pile material for artificial turf.

As a result of research / development to realize artificial turf that is closer to natural grass, recently, weaving is made by using polyolefin having low friction characteristics and chemical stability, in particular, artificial turf pile yarn of polyethylene material and bubble paper of polypropylene material Turf production methods have emerged. However, polyolefin-based materials, especially polyethylene, have very low melting point (typically around 120 ° C) and are chemically very stable because they have no terminal functional groups. Thus, flame retardant performance by post-processing is very difficult to achieve, which is still satisfactory. The level of post-processing flame retardant treatment has not been developed.

The present invention has been made to solve the conventional problems, an object of the present invention is to add an excellent flame retardant and optionally additives to the melt mixture which is a spinning solution in the process of producing a polyolefin-based yarn for artificial turf excellent flame resistance and weather resistance The present invention is to provide polyolefin yarn for artificial turf.

In order to achieve the above object of the present invention, the present invention provides a polyolefin-based yarn for artificial turf formed of a melt mixture containing 100 parts by weight of polyolefin resin, and 0.1 to 5 parts by weight of a HALS flame retardant. At this time, the HALS flame retardant is preferably characterized in that the triazine flame retardant, the yarn is preferably characterized in that the fibrillated yarn, the polyolefin resin is preferably characterized in that the polyethylene resin. In addition, the melt mixture may further include one or more additives selected from the group consisting of colorants, light stabilizers, ultraviolet absorbers, and antioxidants to show additional functionality to the polyolefin-based yarn for artificial turf.

In order to achieve another object of the present invention, the present invention is a bubble layer formed of a woven or nonwoven fabric of polyolefin fiber; Pile formed by entering the polyolefin-based yarn for artificial turf according to the present invention on the bubble layer; It provides an artificial turf structure comprising a; and a support layer formed by coating a polymer resin on the lower surface of the bubble layer. In addition, the artificial turf structure according to the present invention comprises a bubble layer formed of a woven or nonwoven fabric of the polyolefin-based yarn for artificial turf according to the present invention; Pile formed by entering the polyolefin-based yarn for artificial turf according to the present invention on the bubble layer; It may be configured to include; and a support layer formed by coating a polymer resin on the lower surface of the bubble layer. In addition, the artificial turf structure according to the present invention may further include a filling layer formed by filling a filler between the top of the bubble layer and the pile.

The polyolefin-based yarn for artificial turf according to the present invention is excellent in flame retardancy and weather resistance because it is formed of a molten mixture comprising a HALS flame retardant and a polyolefin resin that impart weather resistance to stability while providing flame resistance. . When the artificial turf structure manufactured using the polyolefin-based yarn for artificial turf according to the present invention as a pile or bubble layer material can be used to prevent fires when it is installed in a playground, and can be used for a long time, it is advantageous to protect the spectators or athletes and economically advantageous. Have

1 schematically illustrates a cross section of an artificial turf structure according to an embodiment of the present invention, and FIG. 2 schematically illustrates a cross section of an artificial turf structure according to another embodiment of the present invention.

(1) Polyolefin yarn for artificial turf

One aspect of the present invention relates to a polyolefin-based yarn for artificial turf having excellent flame resistance and weather resistance.

Polyolefin-based yarn for artificial turf according to the present invention is formed by extruding a melt mixture containing a polyolefin resin and a HALS flame retardant. In addition, the melt mixture may further comprise one or more additives preferably selected from the group consisting of colorants, light stabilizers, ultraviolet absorbers, and antioxidants. Hereinafter, the components constituting the polyolefin yarn for artificial turf according to the present invention and the characteristics of the yarn will be described.

Polyolefin  Suzy

Polyolefin is a high molecular compound produced by polymerization of an olefin (chain hydrocarbon compound having one double bond), and specific examples thereof include polyethylene, polypropylene, polyethylene-propylene copolymer, and polyisobutylene. The polyolefin resin constituting the polyolefin yarn for artificial turf according to the present invention is preferably polypropylene resin or polypropylene resin, and more preferably polyethylene resin. Types of polyethylene include high density polyethylene, medium density polyethylene, linear low density polyethylene, low density polyethylene, and the like. Polyethylene resin is weaker in heat resistance and weather resistance than polypropylene resin, but is excellent in workability, and is highly improved in flame retardancy and weather resistance by the HALS flame retardant described later. Thus, polyethylene for artificial turf prepared from a melted mixture containing polyethylene resin Yarn is more versatile.

Hals (HALS) system Flame retardant

The melt mixture according to the present invention comprises a Hals-based flame retardant. Hals (Hindered Amine Light Stabilizer, HALS) refers to a material that is originally surrounded by a three-dimensional structure of the amine group, and used as a light stabilizer, but the Hals (HALS) flame retardant according to the present invention is a three-dimensional structure of the amine group In addition to being surrounded by, it means a material containing a functional group that at the same time impart flame retardancy. The HALS flame retardant is present in a variety of functional groups that impart flame retardancy (such as phosphorus flame retardants or functional groups impart flame retardancy of halogen-based flame retardants), preferably the functional group imparting flame retardancy is triazine. It features. The HALS flame retardant is hereinafter referred to as a triazine flame retardant as a HALS-triazine flame retardant. Hals (HALS) -triazine-based flame retardant used in the present invention is not limited to the kind if the material containing the hindered amine characteristics and triazine, and specifically poly [[6- [1,1,3,3 -Tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,6- Hexanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,6-hexane Diyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(1,2,2,6, 6-pentamethyl -4-piperidinyl) imino] -1,6-hexanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl-4-piperidinyl) imino] -1,6 -Hexanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4 -Piperidinyl) imino] -1,5-pentanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,5-pentane Diyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl -4-piperidinyl) imino] -1,5-pentanediyl [(2,2,6,6-tetramethyl-4-pyreridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl-4-piperidinyl) imino] -1,5 -Pentanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4 -Piperidinyl) imino] -1,4-butanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,4-butane Diyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl -4-piperidinyl) imino] -1,4-butanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl-4-piperidinyl) imino] -1,6 -Butanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; N, N ', N ", N"'-tetrakis {2,4-bis [(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl) alkylamino] -s-triazin-6-yl} -3,3'-ethylenediiminodipropylamine; 2,4-bis {N- [1- (2-hydroxy-2-methylpropoxy) -2,2,6,6-tetramethylpiperidin-4-yl] -N-alkylamino} -6 -(2-hydroxymethylamino) -s-triazine; 2,4-bis [(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl) alkylamino] -6- (2-hydroxyethylamino) -s-tri Azine; 2,4-bis [(1-hydrocarbyloxy-2,2,6,6-piperidin-4-yl) alkylamino] -6-chloro-s-triazine; Or N, N ', N "'-tris {2,4-bis [(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl) alkylamino] -s- Triazine-6-yl} -3,3'-ethylenediiminodipropylamine, etc., and may be used by selecting one or more of the above-mentioned hydrocarbyl in the HALS-triazine flame retardant. Oxy means mainly methoxy, cyclohexyloxy, octyloxy, etc. Alkyl of alkylamino means an alkyl group having mainly 1 to 12 carbon atoms, and FLAMESTAB is a commercially available HALS flame retardant. ^® NOR ^® 116 (Ciba chemical) and HALS944 (Yantai Yusheng Chemical).

The content of the HALS flame retardant in the melt mixture according to the present invention is preferably about 0.1 to 5 parts by weight based on 100 parts by weight of the polyolefin resin. If the content of the HALS flame retardant is less than 0.1 parts by weight, the flame retardancy and weather resistance of the polyolefin-based yarn for artificial turf, which is the final molding, are not sufficiently improved, and if it exceeds 5 parts by weight, the increase rate of the flame retardancy and weather resistance is not large. There is a fear that the fall, the moldability during extrusion. The content of the HALS flame retardant is more preferably about 0.3 to 2.0, particularly preferably 0.5 to 1.5 parts by weight based on 100 parts by weight of the polyolefin resin.

Other additives

The melt mixture according to the present invention may further include at least one additive selected from the group consisting of colorants, light stabilizers, ultraviolet absorbers, and antioxidants to impart the functionality of the polyolefin-based yarn for artificial turf as a final molding.

The colorant is to impart aesthetics to the polyolefin-based yarn for artificial turf, which is the final molded product, and pigments or dyes may be used as the colorant, and compatibility with other components such as polyolefin-based resins and polyolefin-based for artificial turf which is the final molded product It is preferable that it is a pigment in consideration of the aesthetics exerted on a yarn. The content of the colorant is not particularly limited, and is about 1 to 10 parts by weight based on 100 parts by weight of the polyolefin resin.

The light stabilizer is to improve the weather resistance to light stability of the polyolefin-based yarn for artificial turf, which is the final molded product, and includes a HALS compound, disulfide salts such as sodium disulfite, and hindered phenols and phosphites. Specifically is bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8 -Triazaspiro (4,5) -decane-2,5-dione, bis (2,2,6,6-tetramethyl-4-piperidyl) succinate, poly (N-β-hydroxyethyl- 2,2,6,6-tetramethyl-4-hydroxy-piperidine succinate) or bis (N-methyl-2,2,6,6-tetramethyl-4-piperidyl) sebacate and the like have. The content of the light stabilizer is not particularly limited, for example, about 0.1 to 3.0 parts by weight based on 100 parts by weight of the polyolefin resin.

The ultraviolet absorber is to prevent deterioration due to ultraviolet rays of the polyolefin-based yarn for artificial turf, which is a final molded product, and the type thereof is not particularly limited, and examples thereof include benzotriazole type ultraviolet absorbers and triazine type ultraviolet absorbers. Examples of benzotriazole type ultraviolet absorbers include 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- [2-hydroxy-3,5-di (alpha, alpha-dimethylbenzyl) phenyl] -benzo Triazole, 2- (2-hydroxy-3,5-di-tert-butylphenyl) benzotriazole, 2- (2-hydroxy-3,5-butyl-5-methylphenyl) -5-chlorobenzotria Sol, 2- (2-hydroxy-3,5-di-tert-butylphenyl) -5-chlorobenzotriazole, 2- (2-hydroxy-3,5-di-tert-amylphenyl) benzotria Sol, 2- (2-hydroxy-5-tert-butylphenyl) benzotriazole, 2- (2-hydroxy-3-sec-butyl-5-tert-butylphenyl) benzotriazole and 2- (2 -Hydroxy-5-tert-octylphenyl) benzotriazole, phenol, 2,2'-methylenebis [6-2H-benzotriazol-2-yl) -4- (1,1,3,3-tetra Methylbutyl)]. In addition, triazine type ultraviolet absorbers include 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5- (hexyl) oxy-phenol, 2- (4- ( (2-hydroxy-3-dodecyloxypropyl) -oxyl-2-hydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- (4 -((2-hydroxy-3-tridecyloxypropyl) -oxyl-2-hydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- (4-((2-hydroxy-3-isooctyloxypropyl) -oxyl-2-hydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, etc. The content of the ultraviolet absorbent is not particularly limited, and is about 0.1 to 3.0 parts by weight based on 100 parts by weight of the polyolefin resin.

Antioxidant is to prevent the oxidation of the polyolefin-based yarn for artificial turf, which is the final molding, and the type thereof is not particularly limited, and typically, the hindered phenyl type, tocopherol, vitamin C (ascorbic acid), and the like. Specific examples of sterically hindered phenyl type antioxidants include 2,6-di-t-butyl-p-cresol; 4,4'-bis (2,6-di-t-butylphenol); Tetrakis p [methylene (3,5-di-t-butyl) 4-hydroxy-hydrocinnamate)] methane; 1,3,5-tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) -1,3,5-triazine-2,4,6- (1H, 3H, 5H)- Trion; 1,3,5-tris (3,5-di-tert-butyl-4-hydroxybenzyl) -s-triazine-2,4,6- (1H, 3H, 5H) -trione; Tris (2,4-ditert-butylphenyl) phosphite; Bis (2,4-dit-butylphenyl) pentaerythritol diphosphite; 2 [[2,4,8,10-tetrakis (1,1-dimethylethyl) dibenzo [d, f] [1,3,2] dioxaphosphine-6-yl] oxy] -N, N -Bis [2 [[2,4,8,10-tetrakis (1,1-dimethylethyl) dibenzo [d, f] [1,3,2] dioxaphosphine-6-yl] oxy] ethane Amines; Oxidized bis (tallow alkyl) amines; 4,4'-bis (2,6-diisopropylphenyl); 2,4,6-tri-t-butylphenol; 2,2'-thiobis (4-methyl-6-t-butyl phenol); Octadecyl 2 (3'5'-di-t-butyl-4'-hydroxyphenyl) -propionate and the like; Esters of thiodipropionic acid such as dilauryl thiodipropionate and distearyl thiodipropionate and the like; Hydrocarbon phosphites such as triphenyl phosphite, trinonyl phosphite, diisodecyl pentaerythritol diphosphate, diphenyldecyl phosphite and the like; And mixtures thereof. The content of the antioxidant is not particularly limited, for example, about 0.1 to 3.0 parts by weight based on 100 parts by weight of the polyolefin resin.

Artificial turf Polyolefin  Characteristics of yarn

The molten mixture described above is extruded and stretched to form a polyolefin-based yarn for artificial turf having a predetermined width and a predetermined thickness. At this time, the yarn has a form of fibrillated yarn or monofilament yarn, and preferably fibrillated yarn, depending on the production method thereof. This is because the final molded polyolefin-based yarn for artificial turf has better flame retardancy and weather resistance than fibrillated yarn. Fibrillated yarn is formed by extruding and stretching the melted mixture into a film form, and then cutting it to a certain width and forming a split on the surface. The monofilament yarn uses a spinneret having a predetermined size. It is formed through a molding process such as melt spinning and stretching. Fibrillated yarn has a superior flame retardancy due to less penetration of oxygen when the flame is applied compared to the monofilament yarn, and a greater cutting strength, thereby providing better weather resistance.

The polyolefin-based yarn for the artificial grass finally formed is mainly used as a pile material of the artificial turf structure, and may also be used as a woven or nonwoven material for forming a bubble layer of the artificial turf structure. In consideration of the use of such polyolefin-based yarn for artificial turf, it is preferable that the polyolefin-based yarn has a width of 1 to 25 mm and a fineness of 5000 to 20,000 denier.

(2) artificial turf structure

Another aspect of the present invention relates to an artificial turf structure using the aforementioned polyolefin-based yarn for artificial turf. Hereinafter, the artificial turf structure according to the present invention will be described with reference to the accompanying drawings.

1 schematically illustrates a cross section of an artificial turf structure according to an embodiment of the present invention, and FIG. 2 schematically illustrates a cross section of an artificial turf structure according to another embodiment of the present invention. As shown in FIGS. 1 and 2, the artificial turf structures 100 and 200 according to the present invention include a bubble layer 10 formed of a woven or nonwoven fabric of polyolefin fibers; Pile 20 formed by entering the above-mentioned polyolefin-based yarn for artificial turf; And a support layer 30 formed by coating a polymer resin on a lower surface of the bubble layer. In addition, as shown in Figure 2, the artificial turf structure 200 according to the present invention may further include a filling layer formed by filling a filler between the top of the bubble layer and the pile.

Bubble layer 10 is a bubble layer 10 is to provide a shape stability of the artificial turf structure and to firmly seat and secure the pile, is formed of a woven or non-woven fabric of polyolefin fibers, preferably to give more excellent shape stability To polyolefin fibers, more preferably polypropylene fibers. At this time, the non-woven fabric of the polyolefin fiber can be produced by any one method selected from the group consisting of a spunbond method, melt brown method, needle punching method, and water yarn twist method. In addition, the bubble layer may be formed of a woven or nonwoven fabric of the above-described polyolefin-based yarn for artificial grass.

The pile 20 serves to impart characteristics similar to natural grass to the artificial turf structure, and is formed by incorporating the above-described polyolefin-based yarn for artificial turf, preferably polyethylene yarn, above the bubble layer. More specifically, the method of attracting the yarn includes a tufting method of forming a loop pile of a predetermined shape by tufting a polyolefin-based yarn on the bubble layer, a moquette method or a Raschel method of simultaneously forming a bubble layer and a pile. The pile preferably has a height of 35 to 75 mm and a number of piles per bubble layer area of 1000 to 30000 pieces / m 2.

The support layer 30 serves to enhance the shape stability of the artificial turf structure, reduce noise, strengthen tear strength, and strengthen the pull strength of the pile, and the polyolefin resin, acrylic resin, or styrene-butadiene rubber (SBR) on the lower surface of the bubble layer. It is formed by coating. More specifically, the resin film is engaged with the lower surface of the bubble layer and then coated through a heating and pressing process.

The filler layer 40 is formed by filling a filler between the top and the pile of the bubble layer, preferably, the first filler layer 41 formed by sequentially stacking the first filler and the second filler between the top and the pile of the bubble layer. ) And the second filling layer 42. The first filler is filled at the top of the bubble layer, and between the piles, and acts as a buffer to mitigate the impact from the ground during exercise, and is made of one or more materials selected from silica sand and vermiculite. Quartz sand is quartz grain sand containing silicon dioxide (SiO ₂ ), anhydrous silicic acid. There are coastal silica, mountain silica, and artificial silica. Vermiculite is a mineral belonging to a monoclinic system with a mica-like crystal structure, also called vermiculite. When vermiculite is used as a filler, it is crushed to a size similar to that of silica sand. The second filler is filled in the gap between the piles on the top of the first filler layer, providing a resilient force and having a function similar to that of movement in a natural grass, and the type of material that can impart elasticity is large. There is no limitation, and in particular, thermoplastic elastomers (TPEs), polyolefin elastomers, and the like. The second filler is usually used in the form of a chip with a suitable size. In addition, the second filler is preferably composed of a compound mixture in which antimony-based flame retardant is blended in the thermoplastic elastomer in order to give improved flame retardancy to the artificial turf structure. Antimony-based flame retardants include antimony trioxide, antimontetraoxide, antimontentoxide, antimony halide, or soda antimonate, and one or more of them are selected and used. The antimony flame retardant is not particularly limited in content, for example, about 0.5 to 5 parts by weight based on 100 parts by weight of the thermoplastic elastomer.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are only intended to more clearly describe the present invention, and do not limit the protection scope of the present invention.

1. Manufacture of Polyethylene Yarn for Artificial Grass

Example 1.

Polyethylene resin, 2,4-bis [(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl) butylamino] -6-chloro-s- as a HALS flame retardant Triazine, green pigment as colorant, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate as light stabilizer, octadecyl 2 (3'5'-di- as antioxidant t-butyl-4'-hydroxyphenyl) -propionate was added to the extruder of the extruder and heated to 100 parts by weight of polyethylene resin, 0.3 parts by weight of a HALS flame retardant, 5 parts by weight of a colorant, and 0.5 parts by weight of a light stabilizer. To prepare a melt mixture consisting of 0.5 parts by weight of antioxidant. At this time, the HALS flame retardant used a master batch containing a flame retardant in a polystyrene resin, and the content of the flame retardant in the master batch was 30% by weight. The melt mixture was extruded into a film shape, cooled, and stretched at a draw ratio of about 5.0 times at about 85 ° C., followed by relaxation heat treatment at about 90 ° C. to prepare a polyethylene film. Fibrillated polyethylene yarn was prepared by cutting the prepared polyethylene film to have a predetermined width using a cutter and then forming a split on the surface.

Example 2.

Fibrillated polyethylene yarns were prepared under the same conditions as in Example 1 except that the content of HALS flame retardant in the melt mixture was 0.5 parts by weight based on 100 parts by weight of polyethylene resin.

Example 3.

Fibrillated polyethylene yarns were prepared under the same conditions as in Example 1 except that the content of the HALS flame retardant in the melt mixture was 0.7 parts by weight based on 100 parts by weight of the polyethylene resin.

Example 4.

Fibrillated polyethylene yarns were prepared under the same conditions as in Example 1 except that the content of the HALS flame retardant in the melt mixture was 1.0 part by weight based on 100 parts by weight of the polyethylene resin.

Example 5.

Fibrillated polyethylene yarns were prepared under the same conditions as in Example 1 except that the content of the HALS flame retardant in the melt mixture was 1.5 parts by weight based on 100 parts by weight of the polyethylene resin.

Example 6.

Polyethylene resin, 2,4-bis [(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl) butylamino] -6-chloro-s- as a HALS flame retardant Triazine, green pigment as colorant, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate as light stabilizer, octadecyl 2 (3'5'-di- as antioxidant t-butyl-4'-hydroxyphenyl) -propionate was added to the extruder of the extruder and heated to 100 parts by weight of polyethylene resin, 0.3 parts by weight of a HALS flame retardant, 5 parts by weight of a colorant, and 0.5 parts by weight of a light stabilizer. To prepare a melt mixture consisting of 0.5 parts by weight of antioxidant. At this time, the HALS flame retardant used a master batch containing a flame retardant in a polystyrene resin, and the content of the flame retardant in the master batch was 30% by weight. The melt mixture was extruded into a spinneret, melt spun, extruded, cooled, and stretched at a draw ratio of about 5.0 times at about 85 ° C., followed by relaxation heat treatment at about 90 ° C. to prepare a monofilament polyethylene yarn.

Example 7.

A monofilament polyethylene yarn was prepared under the same conditions as in Example 6 except that the content of the HALS flame retardant in the melt mixture was 0.5 parts by weight based on 100 parts by weight of the polyethylene resin.

Example 8.

A monofilament polyethylene yarn was prepared under the same conditions as in Example 6 except that the content of the HALS flame retardant in the melt mixture was 0.7 parts by weight based on 100 parts by weight of the polyethylene resin.

Example 9.

A monofilament polyethylene yarn was prepared under the same conditions as in Example 6 except that the content of the HALS flame retardant in the melt mixture was 1.0 part by weight based on 100 parts by weight of the polyethylene resin.

Example 10.

A monofilament polyethylene yarn was prepared under the same conditions as in Example 6 except that the content of the HALS flame retardant in the melt mixture was 1.5 parts by weight based on 100 parts by weight of the polyethylene resin.

Comparative Example 1.

Fibrillated polyethylene yarns were prepared under the same conditions as in Example 1 except that the melt mixture was composed of 100 parts by weight of polyethylene resin, 5 parts by weight of colorant, 0.5 parts by weight of light stabilizer, and 0.5 parts by weight of antioxidant.

Comparative Example 2

Monofilament polyethylene yarns were prepared under the same conditions as in Example 6 except that the melt mixture was composed of 100 parts by weight of polyethylene resin, 5 parts by weight of colorant, 0.5 parts by weight of light stabilizer, and 0.5 parts by weight of antioxidant.

2. Properties of Polyethylene Yarn for Artificial Grass

(1) How to measure

Average Fineness of Yarn: The average fineness of the yarn was measured according to DIN 53812/2 using a Vibroskop of Lenzing.

Cutting Strength and Elongation of Yarn: The cutting strength and elongation of the yarn was measured according to DIN 53816 using INSTRON 4301.

Weather / light resistance: after Xenon-Weather O-Meter (Sample temperature: 89 ℃; Irradiation level: 0.55 W / ㎡ at 340nm, Total irradiation: 700 kJ / ㎡ at 340nm, Relative humidity: 30%) After irradiation Cutting strength and elongation were measured at 200/400/600/800/1000 hours and expressed as a percentage relative to the initial value.

(2) Physical property measurement result of polyethylene yarn

Table 1 below shows the measurement results of the physical properties of the yarns prepared in Examples 1 to 5 and Comparative Example 1. As shown in Table 1, the weathering and light resistance of the polyethylene yarn prepared from the molten mixture containing the HALS flame retardant, the weatherability / light resistance of the polyethylene prepared from the molten mixture containing no HALS flame retardant as an index. It can be seen that it is much superior to the yarn.

division Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Fineness (denier, g / 900m) 11021 10458 10102 10752 10605 10716 Shinto (%) 28.5 25.4 27.5 26.8 29.4 25.9 Cutting strength (g _f / denier) 1.77 1.58 1.68 1.56 1.59 1.84 Weather / Light Resistance Change rate of cut strength (initial,%) 200 hours 87.0 91.8 94.0 92.9 85.5 72.3 400 hours 81.9 78.5 73.8 85.3 77.4 78.3 600 hours 81.4 77.2 66.7 84.0 77.4 56.5 800 hours 70.6 76.6 63.1 82.1 83.0 53.3 1000 hours 68.9 74.7 58.3 80.1 81.8 38.0 Elongation Change (Initial,%) 200 hours 202 157 178 162 180 163 400 hours 211 185 199 185 191 182 600 hours 170 215 263 226 219 206 800 hours 131 187 209 194 217 187 1000 o'clock
liver 138 194 206 202 189 199

In addition, although not shown in Table 1, the monofilament polyethylene yarns prepared in Examples 6 to 10 and Comparative Example 2 have a fineness of about 8000 to 11000 denier and an elongation of about 100 to 110%. The breaking strength was about 0.8-1.2 g _f / denier.

3. Manufacture of artificial turf structure

Example 11.

A fibrillated polyethylene yarn prepared in Example 1 was formed on a woven fabric (bubble paper) of polypropylene fiber to form a pile, and a styrene-butadiene rubber (SBR) film was engaged with the bottom surface of the bubble paper, followed by heating and compression. The artificial turf structure was manufactured by coating through a process.

Example 12.

An artificial turf structure was prepared in the same manner as in Example 11, except that the fibrillated polyethylene yarn prepared in Example 2 was used as a material for forming the pile.

Example 13.

An artificial turf structure was prepared in the same manner as in Example 11, except that the fibrillated polyethylene yarn prepared in Example 3 was used as a material for forming the pile.

Example 14.

An artificial turf structure was prepared in the same manner as in Example 11 except that the fibrillated polyethylene yarn prepared in Example 4 was used as a material for forming the pile.

Example 15.

An artificial turf structure was prepared in the same manner as in Example 11 except that the fibrillated polyethylene yarn prepared in Example 5 was used as a material for forming the pile.

Example 16.

An artificial turf structure was prepared in the same manner as in Example 11, except that the monofilament polyethylene yarn prepared in Example 6 was used as a material for forming the pile.

Example 17.

An artificial turf structure was prepared in the same manner as in Example 11, except that the monofilament polyethylene yarn prepared in Example 7 was used as a material for forming the pile.

Example 18.

An artificial turf structure was prepared in the same manner as in Example 11, except that the monofilament polyethylene yarn prepared in Example 8 was used as a material for forming the pile.

Example 19.

An artificial turf structure was prepared in the same manner as in Example 11, except that the monofilament polyethylene yarn prepared in Example 9 was used as a material for forming the pile.

Example 20.

An artificial turf structure was prepared in the same manner as in Example 11, except that the monofilament polyethylene yarn prepared in Example 10 was used as a material for forming the pile.

Comparative Example 3

An artificial turf structure was prepared in the same manner as in Example 11, except that the fibrillated polyethylene yarn prepared in Comparative Example 1 was used as a material for forming the pile.

Comparative Example 4.

An artificial turf structure was prepared in the same manner as in Example 11, except that the monofilament polyethylene yarn prepared in Comparative Example 2 was used as a material for forming the pile.

4. Flame retardancy of artificial turf structure

(1) How to measure

Combustibility of artificial turf structure: Combustibility was measured according to the test method of KS K 0108.

Flame radioactivity of artificial turf structure: Flame radioactivity was measured according to the test method of ASTM E 648-04.

(2) Flame retardancy measurement result of artificial turf structure

Table 2 shows the results of measuring the artificial turf structure flame retardancy prepared in Examples 11 to 15 and Comparative Example 3.

division Example 11 Example 12 Example 13 Example 14 Example 15 Comparative Example 3 Remarks File specification Pile height (mm) 55 55 55 55 55 55 Pile density (count / ㎡) 18400 18400 18400 18400 18400 18400 combustibility Carbonization distance (mm) 85 80 75 60 70 infinity Pass within 100mm Residual time (seconds) 15 4 2 One 5 No self extinction Pass in 20 seconds Flame retardant Flame Radioactive (W / ㎠) Micronization Micronization 0.4 0.55 1.02 Micronization Flame propagation test by radiant heat energy Rating Out of grade Out of grade Grade 2 Grade 1 Grade 1 Micronization

Table 3 shows the results of measuring the artificial turf structure flame retardancy prepared in Examples 16 to 20 and Comparative Example 4.

division Example 16 Example 17 Example 18 Example 19 Example 20 Comparative Example 4 Remarks File specification Pile height (mm) 55 55 55 55 55 55 Pile density (count / ㎡) 10700 10700 10700 10700 10700 10700 combustibility Carbonization distance (mm) 150 135 109 60 55 infinity Pass within 100mm Residual time (seconds) 25 22 20 10 8 No self extinction Pass in 20 seconds Flame retardant Flame Radioactive (W / ㎠) Micronization Micronization 0.25 0.55 1.02 Micronization Flame propagation test by radiant heat energy Rating Out of grade Out of grade Grade 2 Grade 1 Grade 1 Micronization

In Table 2 and Table 3, the radioactive grade rating criteria are as follows. Grade 1 is at least 0.45 W / m 2; Grade 2 is 0.22 ~ 0.44 W / m2; If flame retardance is less than 0.22 W / m 2, the treatment is out of grade.

As shown in Table 2 and Table 3, when the polyethylene yarn made of a molten mixture containing a HALS flame retardant is used as the pile material, the flame retardancy of the artificial turf is greatly improved, and in particular, the flame retardancy of the fibrillated yarn is improved. Increased.

DESCRIPTION OF SYMBOLS 10 Bubble layer 20 File 30 Support layer 40 Filling layer

Claims (20)

100 parts by weight of polyolefin resin, 0.3 to 2.0 parts by weight of Hals-triazine flame retardant, 1 to 10 parts by weight of colorant, 0.1 to 3.0 parts by weight of light stabilizer, 0.1 to 3.0 parts by weight of ultraviolet absorber, and 0.1 to antioxidant Polyolefin yarn for artificial turf formed of a molten mixture containing 3.0 parts by weight.
The polyolefin-based yarn for artificial turf according to claim 1, wherein the yarn is a fibrillated yarn.
3. The polyolefin-based yarn for artificial turf according to claim 2, wherein the fibrillated yarn has a width of 1 to 25 mm and a fineness of 5000 to 20,000 denier.
delete The method of claim 1, wherein the HALS-triazine flame retardant is poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4 -Diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,6-hexanediyl [(2,2,6,6-tetramethyl-4-pyridridinyl ) Imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,6-hexane Diyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(1,2,2,6, 6-pentamethyl -4-piperidinyl) imino] -1,6-hexanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl-4-piperidinyl) imino] -1,6 -Hexanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4 -Piperidinyl) imino] -1,5-pentanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,5-pentane Diyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl -4-piperidinyl) imino] -1,5-pentanediyl [(2,2,6,6-tetramethyl-4-pyreridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl-4-piperidinyl) imino] -1,5 -Pentanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4 -Piperidinyl) imino] -1,4-butanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] -1,4-butane Diyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6- [1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl -4-piperidinyl) imino] -1,4-butanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; Poly [[6-morphine-1,3,5-triazine-2,4-diyl] [(1,2,2,6,6-pentamethyl-4-piperidinyl) imino] -1,6 -Butanediyl [(2,2,6,6-tetramethyl-4-pyridinyl) imino]]; N, N ', N ", N"'-tetrakis {2,4-bis [(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl) alkylamino] -s-triazin-6-yl} -3,3'-ethylenediiminodipropylamine; 2,4-bis {N- [1- (2-hydroxy-2-methylpropoxy) -2,2,6,6-tetramethylpiperidin-4-yl] -N-alkylamino} -6 -(2-hydroxymethylamino) -s-triazine; 2,4-bis [(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl) alkylamino] -6- (2-hydroxyethylamino) -s-tri Azine; 2,4-bis [(1-hydrocarbyloxy-2,2,6,6-piperidin-4-yl) alkylamino] -6-chloro-s-triazine; And N, N ', N "'-tris {2,4-bis [(1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidin-4-yl) alkylamino] -s- Triazine-6-yl} -3,3'-ethylenediiminodipropylamine; Polyolefin-based yarn for artificial turf, characterized in that at least one member selected from the group consisting of.
The polyolefin-based yarn for artificial turf according to claim 1, wherein the polyolefin-based resin is a polyethylene resin.
delete delete Bubble layer formed of woven or nonwoven fabric of polyolefin fiber;
A pile formed by incorporating the polyolefin-based yarn of any one of claims 1 to 3, 5, or 6 on the bubble layer; And
Artificial turf structure comprising a; support layer formed by coating a polymer resin on the lower surface of the bubble layer.
10. The artificial turf structure according to claim 9, wherein the polyolefin fibers forming the bubble layer are polypropylene fibers, and the polyolefin yarns forming the pile are polyethylene yarns.
The artificial turf structure according to claim 9, wherein the pile has a height of 35 to 75 mm and the number of piles per bubble layer area is 1000 to 30000 / m 2.
10. The artificial turf structure of claim 9, further comprising a filling layer formed by filling a filler between the top of the bubble layer and the pile.
The method of claim 12, wherein the filling layer is formed by sequentially stacking the first filler and the second filler, the first filler is made of one or more materials selected from silica sand or vermiculite, the second filler is a thermoplastic elastomer or Artificial turf structure, characterized in that made of one or more materials selected from polyolefin elastomer.
14. The artificial turf structure of claim 13, wherein the second filler is a compound mixture in which an antimony-based flame retardant is blended with a thermoplastic elastomer.
A bubble layer formed of a woven or nonwoven fabric of the polyolefin-based yarn of any one of claims 1 to 3, 5 or 6;
A pile formed by incorporating the polyolefin-based yarn of any one of claims 1 to 3, 5, or 6 on the bubble layer; And
Artificial turf structure comprising a; support layer formed by coating a polymer resin on the lower surface of the bubble layer.
The artificial turf structure according to claim 15, wherein the polyolefin-based yarns forming the bubble layer are polypropylene fibers, and the polyolefin-based yarns forming the pile are polyethylene-based yarns.
The artificial turf structure according to claim 15, wherein the pile has a height of 35 to 75 mm and the number of piles per bubble layer area is 1000 to 30000 pieces / m 2.
16. The artificial turf structure of claim 15, further comprising a fill layer formed by filling a filler between the top of the bubble layer and the pile.
19. The method of claim 18, wherein the filler layer is formed by sequentially stacking the first filler and the second filler, the first filler is made of one or more materials selected from silica sand or vermiculite, the second filler is a thermoplastic elastomer or Artificial turf structure, characterized in that made of one or more materials selected from polyolefin elastomer.
20. The artificial turf structure of claim 19, wherein the second filler is a compound mixture in which an antimony-based flame retardant is blended with a thermoplastic elastomer.

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