KR101962320B1 - Artificial turf fiber and artificial lawn mat using the same - Google Patents

Abstract

The present invention relates to artificial turf yarn comprising a resin mixture containing 2.5-20 wt% of a non-polyolefin resin and 80-97.5 wt% of a polyolefin resin, and 0.1-5 wt% of a compatibilizer based on 100 wt% of the resin mixture. According to the present invention, the artificial turf yarn has polyamide uniformly distributed in polyethylene to exhibit stable physical properties, thereby being able to manufacture yarns with low costs and high performance. Moreover, it is possible to provide artificial turf manufactured by artificial turf pile yarns having excellent skin friction characteristics, elasticity recovery, and heat resistance to sports games, such that the play of athletes can be continuously maintained and maintenance costs such as brushing or the like can be reduced. In addition, an artificial turf product manufactured by the yarn has improved standing properties and durability, and enhanced physical properties such as impact absorption, vertical deformation, and the like, thereby providing excellent play performance.

Description

[0001] The present invention relates to an artificial turf yarn and an artificial lawn using the same,

The present invention relates to an artificial turf yarn and an artificial turf using the same.

Currently, yarns used mainly in artificial turf are polyethylene, polypropylene, and polyamide. Until now, materials of a single material have been used for radioactive or material properties, or materials having similar physical properties have been mixed with each other to produce yarns. However, due to the disadvantages of each material, efforts to overcome this have been continuously required, but the development of technology is stagnating in the market today. For example, polyethylene has a disadvantage in that it is soft in contact with the skin, is inexpensive because of its low cost, and has poor elastic recovery and heat resistance. The polyamide has excellent elastic recovery and heat resistance, but has poor skin friction characteristics and economical efficiency.

In the case of an artificial turf yarn made of polyethylene which is conventionally used in the market, the touch is soft, but the heat resistance and the durability are weak. Polyethylene filament yarns are superior to filament yarns of different materials with different skin friction properties and are most widely used in artificial turf. However, the polyethylene pile has low elastic restorability and low heat resistance, and when a certain period of time has elapsed, the degree of uprightness is lowered due to the combined action of the pressure and heat.

On the other hand, artificial turf yarns made of polyamide are excellent in heat resistance and durability, but have a rough surface and a high coefficient of friction, which increases the possibility of skin damage and burning when sliding.

Conventionally, compositions for core and sheath (shell) were prepared by utilizing the merits of these materials, respectively, melted by using a co-extruder, and then core / In order to produce artificial turf yarns in the form of sheath (shell), yarns were produced in the form of composite yarns. However, in this case, additional facility investment costs for the composite radiation are high, and it is difficult to adjust production conditions due to the difference in melting point. If polyamide and polyethylene are separated into core layer and sheath layer and interfacial adhesion between core and sheath is not smooth, it may cause fatal defects as artificial turf yarn due to separation of core and sheath. In addition, it was not economical because a polyamide having a relatively high price relative to polyethylene was used in a high proportion to prepare it as a sheath layer.

Accordingly, in the present invention, an artificial turf yarn which has a relatively small amount of polyamide compared to polyethylene and dispersed evenly in a polyethylene material and has excellent physical properties, and which does not peel off when it is spun as an artificial turf yarn, .

Korean Patent No. 10-1009390

It is an object of the present invention to provide a resin composition comprising 2.5 to 20% by weight of a non-polyolefin resin and 80 to 97.5% by weight of a polyolefin resin and comprising 0.1 to 5% by weight of a compatibilizer, based on 100% To provide an artificial turf yarn.

Another object of the present invention is to provide a method for producing artificial turf yarns.

Another object of the present invention is to provide artificial turf using artificial turf yarns.

In order to achieve the above object, in one aspect, the present invention provides a resin composition comprising 2.5 to 20% by weight of a non-polyolefin resin and 80 to 97.5% by weight of a polyolefin resin, By weight, and 0.1 to 5% by weight of a compatibilizing agent.

In the present invention, the polyolefin-based resin is a polyethylene-based resin, a polypropylene-based resin, or a mixed resin thereof.

In the present invention, the polyethylene-based resin is at least one selected from the group consisting of linear low-density polyethylene, low-density polyethylene, medium-density polyethylene and high-density polyethylene.

In the present invention, the non-polyolefin-based resin is at least one resin selected from the group consisting of polyamide, polyester and polytrimethylene terephthalate.

In the present invention, the polyamide is at least one selected from the group consisting of nylon 6, nylon 66, nylon 610, and a copolymer polymer composed of a combination of these. In the present invention, the non-polyolefin resin has a shape of a regular or irregular particle or a fine fiber, the size of the regular or irregular particle is 50 μm or less, the diameter of the fine fiber is 0.1-10 d, to be.

In the present invention, the compatibilizing agent is selected from the group consisting of maleic acid, maleic anhydride, maleic acid hydrazide, dichloromaleic anhydride, unsaturated dicarboxylic acid, fumaric acid, citric acid, citric acid anhydride, malic acid and agaric acid Or more.

In the present invention, it further includes a color master batch, an antioxidant, an antioxidant, and a flame retardant.

In another aspect, the present invention provides a method for producing a non-polyolefin resin, comprising: preparing 2.5 to 20% by weight of a non-polyolefin resin in the form of a regular or irregular particle or fine fiber; Dispersing the prepared non-polyolefin resin in the form of fine particles or irregular particles or fine fibers in 80 to 97.5% by weight of a polyolefin resin to prepare a first mixture of the resins; Mixing 0.1 to 5% by weight of a compatibilizer, based on 100% by weight of the first mixture, to prepare a second mixture; And melt spinning the second mixture in a spinner to produce a yarn. ≪ RTI ID = 0.0 > [10] < / RTI >

In yet another aspect, the present invention provides artificial turf using the artificial turf yarn.

Since the two materials are not mixed with each other, the polyamide is uniformly distributed in the polyethylene in comparison with the yarn made of the composite yarn in the form of core / sheath (shell), so that stable physical properties can be exhibited and the production of low cost / high performance yarn is possible Do.

In addition, artificial turf made of artificial turf filaments having excellent skin friction characteristics, elastic recovery property, and heat resistance can be provided to a sports game, so that the athletes can continuously play and the maintenance cost for brushing and the like is reduced .

Further, artificial turf products made of the above yarns have improved standing performance and durability and improved physical properties such as shock absorption / vertical deformation, and thus are excellent in play performance.

1 is a cross-sectional view of a conventional artificial grass filament yarn and an artificial turf filament yarn of the present invention.
2 is a graph showing the ratio of the viscosity (Tan Delta) of the artificial turf pile according to the present invention.

Hereinafter, the present invention will be described in detail.

In the following detailed description, the names of components are categorized into first, second, etc. in order to distinguish them from each other in the same relation, and the following description is not necessarily limited to the order.

In one embodiment, the present invention provides a resin composition comprising 2.5 to 20 wt% of a non-polyolefin resin and 80 to 97.5 wt% of a polyolefin resin, wherein the compatibilizer 0.1 to 5 wt% % ≪ / RTI >

In the present invention, the polyolefin-based resin is a polyethylene-based resin, a polypropylene-based resin, or a mixed resin thereof.

In the present invention, the polyethylene-based resin is at least one selected from the group consisting of linear low-density polyethylene, low-density polyethylene, medium-density polyethylene and high-density polyethylene.

In the present invention, when the content of the polyolefin-based resin contained in the whole artificial turf yarn is less than 80% by weight, the workability at the time of yarn spinning is remarkably lowered, and the non-polyolefin resin content is increased relatively And the cost is increased. On the other hand, when it exceeds 97.5% by weight, it is soft and economical when it comes into contact with the skin, but has low strength and elongation, and elastic recovery property and heat resistance are weak.

In the present invention, the non-polyolefin-based resin is at least one resin selected from the group consisting of polyamide, polyester and polytrimethylene terephthalate.

In the present invention, when the content of the non-polyolefin-based resin contained in the whole artificial turf yarn is less than 2.5% by weight, the strength and elongation are low and the heat resistance is not good so that the yarn is deformed when exposed to direct sunlight in a hot period, And the long-term durability is deteriorated. On the other hand, when the content exceeds 20% by weight, the strength and heat resistance are excellent, but the problem of melt balance and dispersibility are lowered, resulting in lowered production efficiency, and it is difficult to expect improvement in performance relative to the manufacturing cost.

In the present invention, the polyamide is at least one selected from the group consisting of nylon 6, nylon 66, nylon 610, and a copolymer polymer composed of a combination of these.

In the present invention, the non-polyolefin resin has a shape of a regular or irregular particle or a fine fiber. In the present invention, the material dispersed in the polyolefin-based resin for producing artificial turf yarns is a shaped or amorphous particle having a particle size of 50 μm or less. The term " particle size "means the size of a particle representing a population of particles in which the individual particles are grouped. Or a material dispersed in a polyolefin-based resin for the production of artificial turf yarn is a fine fiber having a thickness of 0.1 to 10 deg. And a length of 0.1 to 1 mm. The fine fiber means a fiber in which a filament yarn or a tow is cut to a predetermined length. But it generally has a length of about mm to about m. When the thickness of the fiber is less than 0.1de, the fiber can not be formed and the powder is in a state of powder. When the diameter of the fiber is more than 10de, there is a problem that the nozzle is clogged when spinning for producing an artificial turf yarn. If the length is less than 0.1 mm, the fine fiber is not easily produced and the powder state is attained. If it exceeds 1 mm, the nozzle may be clogged during spinning . The term particle size means the size of a particle representing a population of particles in which the individual particles are grouped.

Also, in the present invention, the non-polyolefin resin may be a fine fiber type, or a milled fiber obtained by pulverizing the fine fiber or filament yarn. The pulverized fibers are generally pulverized fibers in the form of powder having a size of several tens to several hundreds of micrometers when fibers shorter in length than the fine fibers are required. Generally, since the length of cut of the fiber is limited to about 1 mm, it is pulverized and used.

In the present invention, the compatibilizing agent is selected from the group consisting of maleic acid, maleic anhydride, maleic acid hydrazide, dichloromaleic anhydride, unsaturated dicarboxylic acid, fumaric acid, citric acid, citric acid anhydride, malic acid and agaric acid Or more.

In the present invention, it may further include a color master batch, an antioxidant, an antioxidant, and a flame retardant.

The kind of the color master batch, the anti-aging agent, the antioxidant and the flame retardant are not particularly limited, and ordinary ones can be used.

In another aspect, the present invention provides a method for producing a non-polyolefin resin, comprising: preparing 2.5 to 20% by weight of a non-polyolefin resin in the form of a regular or irregular particle or fine fiber; Dispersing the prepared non-polyolefin resin in the form of fine particles or irregular particles or fine fibers in 80 to 97.5% by weight of a polyolefin resin to prepare a first mixture of the resins; Mixing 0.1 to 5% by weight of a compatibilizer, based on 100% by weight of the first mixture, to prepare a second mixture; And melt spinning the second mixture in a spinner to produce a yarn.

In the present invention, a method for producing an artificial turf yarn comprises firstly preparing 2.5 to 20% by weight of a non-polyolefin resin in the form of a regular or irregular particle or a fine fiber. The term " non-polyolefin resin ", the term " regular or irregular particle, fine fiber "

Next, a first mixture of the resin is prepared by dispersing the above-prepared solid state amorphous or amorphous particles or the non-polyolefin resin in the form of fine fibers in 80 to 97.5 wt% of the gel state polyolefin resin.

At this time, 0.1 to 5% by weight of a compatibilizer is mixed based on 100% by weight of the first mixture to prepare a second mixture.

As described above, by the addition of the compatibilizer, the polyolefin-based resin such as polyethylene and the polyamide as the non-polyolefin-based resin are mixed and bonded to each other, as shown in Fig. Conventionally, when a polyolefin-based resin such as polyethylene and a polyamide that is a non-polyolefin-based resin are mixed with each other, they are not mixed with each other and are separated from each other when they are spun into an artificial turf yarn. However, The resin is not phase-separated but bonded and stably imparts physical properties. The second mixture can be made in a master batch.

The term "masterbatch" means a raw material in the form of a pellet in which a basic plastic raw material and an additive to be added are concentrated and dispersed at a high concentration.

Next, a second mixture in the form of a masterbatch comprising the non-polyolefin resin, polyolefin resin, and compatibilizer is melt-spun in a spinner to produce artificial turf yarn.

In the case of a polyolefin-based resin, it is possible to manufacture artificial grass filament yarns by melt spinning at 180 to 200 ° C. However, in the case of a non-polyolefin-based resin, melt spinning is not carried out at 180 to 200 ° C, and spinning at 260 to 280 ° C enables the production of artificial turf yarns. If the polyolefin-based resin is spun at 260 to 280 ° C, there is a problem of burning. If the non-polyolefin-based resin is spun at 180 to 200 ° C,

Thus, in the present invention, a mixture of a non-polyolefin resin sheet and a polyolefin resin sheet was mixed at an appropriate weight ratio and melt-spun at 250 to 270 ° C. As a result, it was confirmed that artificial turf yarn could be produced without being burned.

In yet another aspect, the present invention provides artificial turf using the artificial turf yarn.

In the present invention, the artificial turf yarn is used as a file material of artificial turf, so that artificial turf files can be produced using the yarn. The artificial turf pile serves to impart characteristics similar to natural turf in an artificial turf, and is formed by raising artificial turf yarn on the top of the base.

Specifically, a method of raising a yarn includes a tufting method of forming a loop file of a predetermined shape by tufting an artificial turf yarn on the top of the paper, a moquette method or a lacelle method of simultaneously forming a paper and a file.

The bubble is the part that fixes the artificial grass file. The foam may be formed in a wide plate shape, and double or triple reinforced foam may be used depending on the application. In addition, the lower surface of the base paper is made to be subjected to a force by a polymer resin coating treatment.

Therefore, artificial turf can be produced by putting the artificial turf yarn on the base fabric and coating the bottom surface of the base fabric.

Hereinafter, the present invention will be described in more detail by way of examples. However, the following examples are illustrative of the present invention, and the contents of the present invention are not limited to the following examples.

<Experimental Example 1> Production of artificial turf yarn

Example 1

Nylon 6,6 was used as a non-polyolefin resin in the form of microfibers having a thickness of 1.5de and a length of 0.4mm. A linear low density polyethylene resin was used as the polyolefin resin, and maleic anhydride was used as the compatibilizer.

First, 2.5% by weight of the nylon 6,6 fine fiber (nylon microfiber) was uniformly dispersed in 97.5% by weight of a gelatinous linear low density polyethylene resin, and 3% by weight of maleic anhydride was added. Further, after adding a color master batch, an antioxidant, an antioxidant and a flame retardant, an LLDPE masterbatch (LLDPE M / B) containing nylon microfibers was prepared. The fabricated LLDPE M / B was spun at 250-270 ° C. using a spinner to produce artificial grass yarn (filament yarn).

Example 2

An artificial turf yarn was produced in the same manner as in Example 1 except that 5% by weight of nylon 6,6 fine fiber (nylon fine fiber) and 95% by weight of linear low density polyethylene resin were used.

Example 3

An artificial turf yarn was prepared in the same manner as in Example 1, except that 7.5 wt% of nylon 6,6 fine fiber (nylon microfiber) and 92.5 wt% of linear low density polyethylene resin were used.

Example 4

An artificial turf yarn was produced in the same manner as in Example 1 except that 10% by weight of nylon 6,6 fine fiber (nylon microfiber) and 90% by weight of a linear low density polyethylene resin were used.

Example 5

An artificial turf yarn was produced in the same manner as in Example 1 except that 20% by weight of nylon 6,6 fine fiber (nylon microfiber) and 80% by weight of a linear low density polyethylene resin were used.

Comparative Example 1

In Example 1, nylon 6,6 fine fiber (nylon microfiber) and a compatibilizer were not used, and 100% by weight of a linear low density polyethylene resin was used to spin at 180 to 200 ° C to produce an artificial turf yarn Were used.

Comparative Example 2

An artificial turf yarn was prepared in the same manner as in Example 1 except that 5 wt% of nylon 6,6 fine fiber (fine fiber) and 95 wt% of linear low density polyethylene resin were used and no compatibilizer was used.

Comparative Example 3

An artificial turf yarn was produced in the same manner as in Example 1 except that 1 wt% of nylon 6,6 fine fiber (nylon microfiber) and 99 wt% of linear low density polyethylene resin were used.

Comparative Example 4

An artificial turf yarn was prepared in the same manner as in Example 1, except that 25% by weight of nylon 6,6 fine fiber (nylon microfiber) and 75% by weight of a linear low density polyethylene resin were used.

EXPERIMENTAL EXAMPLE 2 Comparison of Strength / Elongation / Elongation Resilience of Artificial Turf Yarn

2.1 Strength measurement

The strength of the yarn was measured according to KS K 0412: 2016 (filament yarn) standard and 10 samples were evaluated for each sample and the average value was applied.

As a result, in the case of the nylon microfiber 5% condition (Example 2), the strength was increased by 17.8% and the nylon microfiber 7.5% condition (Example 3) was higher than that of the single LLDPE (Comparative Example 1) Of the total.

2.2 Elongation Measurement

The elongation of the yarn was measured according to KS K 0412: 2016 (filament yarn) standard and 10 samples were evaluated for each sample and the average value was applied.

As a result, the elongation was increased by 18.5% in the case of the nylon microfiber 5% condition (Example 2) and the elongation was increased in the case of the nylon microfiber 7.5% condition (Example 3) as compared with the case of the single LLDPE (Comparative Example 1) Increased by 23.3%.

2.3 DMA measurement (Tan delta measurement)

The analysis for measuring the dynamic properties of yarns was evaluated using a DMA instrument [DMA 8000 (Perkin Elmer)]. The evaluation was performed under the conditions of a frequency of 10 Hz, a pressure of 5 mm, an evaluation time of 30 minutes, and an evaluation temperature of room temperature (25 ° C) in a single cantilever mode. Three samples of each sample were evaluated and their average values were confirmed.

As a result, the yarn (nylon microfiber 7.5%) of Example 3 was higher than the yarn of Comparative Example 1 (LLDPE 100%) in Tan Delta (ratio of viscous to elasticity, viscosity / elasticity) showing viscoelastic properties of the material The elasticity of the yarn (LLDPE_70 ° C) of Comparative Example 1 was decreased in the case of the yarn evaluated after 24 hours exposure to the same yarn at a high temperature (70 ° C), whereas the yarn of the Example 3 (nylon microfiber 7.5% ) Showed a further increase in elasticity.

LLDPE resin Nylon microfiber Maleic anhydride burglar
(gf / d) Elongation (%) Example 1 97.5 wt% 2.5 wt% 3 wt% 1.75 113.57 Example 2 95 wt% 5 wt% 3 wt% 1.92 132.26 Example 3 92.5 wt% 7.5 wt% 3 wt% 2.01 137.62 Example 4 90 wt% 10 wt% 3 wt% 1.84 129.80 Example 5 80 wt% 20 wt% 3 wt% 1.82 130.45 Comparative Example 1 100 wt% - - 1.63 111.6 Comparative Example 2 95 wt% 5 wt% - 1.9 94.42 Comparative Example 3 99 wt% 1 wt% 3 Weight 1.65 112.1 Comparative Example 4 75 wt% 25 wt% 3 wt% 1.75 81.38

From the above description, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. In this regard, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention without departing from the scope of the present invention as defined by the appended claims.

10: Polyolefin
20: Non-polyolefin
30: compatibilizer

Claims (12)

2.5 to 20% by weight of a non-polyolefin resin and 80 to 97.5% by weight of a polyolefin resin,
0.0 &gt; 5% &lt; / RTI &gt; by weight, based on 100% by weight of the mixture of resins. The artificial turf yarn according to claim 1, wherein the polyolefin-based resin is a polyethylene-based resin, a polypropylene-based resin, or a mixed resin thereof. The synthetic turf yarn according to claim 2, wherein the polyethylene-based resin is at least one selected from the group consisting of linear low-density polyethylene, low-density polyethylene, medium-density polyethylene and high-density polyethylene. The synthetic turf yarn according to claim 1, wherein the non-polyolefin resin is at least one resin selected from the group consisting of polyamide, polyester and polytrimethylene terephthalate. 5. The synthetic turf yarn according to claim 4, wherein the polyamide is at least one selected from the group consisting of nylon 6, nylon 66, nylon 610, and a copolymerized polymer composed of combinations thereof. The artificial turf yarn according to claim 1, wherein the non-polyolefin resin has a shape of a regular or irregular particle or a fine fiber. The artificial turf yarn according to claim 6, wherein the spherical or amorphous particles have a particle size of 50 μm or less. The artificial turf yarn according to claim 6, wherein the fine fibers have a thickness of 0.1 to 10 d and a length of 0.1 to 1 mm. The composition of claim 1 wherein said compatibilizer is selected from the group consisting of maleic acid, maleic anhydride, maleic acid hydrazide, dichloromaleic anhydride, unsaturated dicarboxylic acid, fumaric acid, citric acid, citric acid anhydride, malic acid and agaric acid Artificial turf yarn selected from one or more selected. The synthetic turf yarn of claim 1, further comprising a color master batch, an antioxidant, an antioxidant, and a flame retardant. Preparing 2.5 to 20% by weight of a non-polyolefin resin in the form of a regular or irregular particle or a fine fiber;
Dispersing the prepared non-polyolefin resin in the form of fine particles or irregular particles or fine fibers in 80 to 97.5% by weight of a polyolefin resin to prepare a first mixture of the resins;
Mixing 0.1 to 5% by weight of a compatibilizer, based on 100% by weight of the first mixture, to prepare a second mixture; And
And melt spinning the second mixture to produce a yarn. An artificial turf using the artificial turf yarn of claim 11.

Images