Artificial turf with antistatic and cooling functions and production method thereof

Abstract

The application discloses a kind of antistatic and cooling function's simulation artificial turf and production method, simulation artificial turf, including base cloth and multiple clusters antistatic cooling grass silk in base cloth on tufting, the base cloth bottom surface is provided with latex layer, and antistatic cooling grass silk is fixedly connected with base cloth;Wherein, the antistatic cooling grass silk includes curved type's cooling grass silk, straight line type's conductive grass silk and straight line type's non-conductive grass silk, the cooling grass silk, the non-conductive grass silk with the conductive grass silk are combined to form antistatic cooling grass silk by the way of stranding.This application improves the simulation degree of artificial turf, so that artificial turf has the functions of automatic cooling and antistatic.

Description

Technical Field

[0001] This invention belongs to the field of artificial turf technology, specifically relating to a simulated artificial turf with antistatic and cooling functions and its production method. Background Technology

[0002] Artificial turf refers to a chemical product that incorporates synthetic fibers resembling grass blades into a woven base fabric, with a coating on the back for fixation, thus mimicking the performance of natural grass. Generally, artificial turf is intended to replace natural grass; therefore, it strives for high realism. Since artificial turf is typically laid in open-air areas and exposed to direct sunlight, the artificial grass fibers lack the temperature-regulating capabilities of natural grass, making heat generation a significant challenge. Furthermore, because artificial grass fibers are non-conductive plastic, friction from movement on the surface generates static electricity, which cannot be easily dissipated, affecting usability. Therefore, improvements to artificial turf are necessary. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the purpose of this invention is to provide a simulated artificial turf with antistatic and cooling functions and a production method thereof, thereby improving the simulation degree of the artificial turf and enabling it to have automatic cooling and antistatic functions.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0005] In a first aspect, the present invention provides a simulated artificial turf with antistatic and cooling functions, comprising a base fabric and tufted tufts of antistatic and cooling grass fibers on the base fabric. A latex layer is provided on the bottom surface of the base fabric to fix the antistatic and cooling grass fibers to the base fabric. The antistatic and cooling grass fibers include curved cooling grass fibers, straight conductive grass fibers, and straight non-conductive grass fibers. The cooling grass fibers, the non-conductive grass fibers, and the conductive grass fibers are combined by stranding to form the antistatic and cooling grass fibers.

[0006] Preferably, a cluster of antistatic cooling grass fibers contains 1 to 3 strands of conductive grass fibers.

[0007] Preferably, each cluster of antistatic cooling grass fibers contains 8 to 16 cooling grass fibers, 1 to 3 conductive grass fibers, and 6 to 12 non-conductive grass fibers.

[0008] More preferably, in each cluster of antistatic cooling grass fibers, the ratio of cooling grass fibers, non-conductive grass fibers, and conductive grass fibers is 8:6:1.

[0009] Preferably, the length ratio of conductive straw fibers to non-conductive straw fibers is (0.8 to 1):1.

[0010] Preferably, the cooling straw fiber comprises the following raw materials: 50-95% polyethylene, 5-50% polypropylene, 4-10% coloring masterbatch, 2-5% processing aids, 3-8% filler masterbatch, and 5-10% cooling masterbatch, wherein the cooling masterbatch comprises one or both of titanium dioxide and zinc oxide.

[0011] More preferably, the mass ratio of titanium dioxide to zinc oxide is 7:3.

[0012] Preferably, the conductive straw comprises 80-95% polyethylene, 5-20% POE, 3-6% coloring masterbatch, 4-8% processing aids, and 4-6% conductive masterbatch, wherein the conductive masterbatch comprises highly conductive carbon black.

[0013] More preferably, the polyethylene is linear low-density polyethylene with a density of 0.92–0.93 g / cm³. 3 The melt flow rate is 2-5 g / 10 min.

[0014] More preferably, the polypropylene is homopolymer polypropylene with a density of 0.90–0.91 g / cm³. 3 The melt flow rate is 20-30 g / 10 min.

[0015] More preferably, the POE is an ethylene-octene polymer with a density of 0.87–0.89 g / cm³. 3 The melt flow rate is 30-35 g / 10 min.

[0016] More preferably, the processing aids include slip agents, ultraviolet absorbers, and light stabilizers.

[0017] More preferably, the filler masterbatch comprises 80% calcium carbonate and / or silicon dioxide, with a particle size of 3000-5000 mesh.

[0018] In a second aspect, the present invention provides a method for producing simulated artificial turf with antistatic and cooling functions, comprising the manufacture of cooling grass fibers, the manufacture of conductive grass fibers, the manufacture of non-conductive grass fibers, and the manufacture of artificial turf, as detailed below:

[0019] Manufacturing of cooling grass fibers: After the raw materials are mixed evenly, they are extruded, stretched and wound to obtain straight monofilaments. The straight monofilaments are then processed into curved cooling grass fibers for later use.

[0020] Manufacturing of conductive straw filaments: After the raw materials are mixed evenly, they are extruded, stretched, and wound to obtain straight conductive straw filaments for later use;

[0021] Manufacturing of non-conductive straw filaments: After the raw materials are mixed evenly, they are extruded, stretched, and wound to obtain straight conductive straw filaments for later use;

[0022] The manufacturing process of artificial turf involves combining cooling grass fibers, conductive grass fibers, and non-conductive grass fibers. The curved cooling grass fibers are interwoven with the straight conductive and non-conductive grass fibers to form single clusters of antistatic cooling grass fibers. These clusters of antistatic cooling grass fibers are then woven onto a base fabric. Latex is applied to the bottom surface of the base fabric to form a latex layer. The ends of the antistatic cooling grass fibers are then bonded and fixed to the base fabric to obtain artificial turf.

[0023] Beneficial effects:

[0024] This invention primarily uses cooling grass fibers and non-conductive grass fibers. The non-conductive grass fibers are straight, resulting in a smaller area exposed to direct sunlight, while the curved and drooping cooling grass fibers have a much larger area exposed to direct sunlight, thus achieving an excellent cooling effect. Conductive grass fibers are interspersed among them, conducting away static electricity carried by other grass fibers in the same cluster, thus playing an anti-static role. This invention combines the curved and straight grass fibers through a stranding process, with the curved cooling grass fibers covering the base fabric, improving the overall softness of the artificial turf and making it closer to the feel of real natural grass, thereby enhancing the simulation degree of the artificial grass fibers. Attached Figure Description

[0025] Figure 1 The image shown is a partial schematic diagram of the antistatic cooling straw fiber of the present invention.

[0026] Attached labels: 1-base fabric, 2-cooling straw fibers, 3-conductive straw fibers, 4-non-conductive straw fibers. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, specific implementation methods of the present invention will be described below. Obviously, the following descriptions are merely some embodiments of the present invention; those skilled in the art can obtain other implementation methods based on these embodiments without creative effort.

[0028] like Figure 1 As shown, the present invention provides a simulated artificial turf with antistatic and cooling functions, including a base fabric 1 and tufted antistatic and cooling grass fibers on the base fabric 1, and a latex layer is provided on the bottom surface of the base fabric 1; wherein, the antistatic and cooling grass fibers include curved cooling grass fibers 2, straight conductive grass fibers 3 and straight non-conductive grass fibers 4, and the cooling grass fibers 2, non-conductive grass fibers 4 and conductive grass fibers 3 are combined by stranding to form antistatic and cooling grass fibers.

[0029] In this invention, the cooling grass fibers 2 are in a curved state, which increases the infrared emission area of ​​the entire lawn and provides a cooling effect for the entire lawn. The cooling grass fibers 2 are in a flattened state on the base fabric 1. The curved and flattened grass fibers present a fluffy and soft effect, and the simulation is good.

[0030] The latex layer is formed by coating conventional styrene-butadiene latex, and its components include styrene-butadiene latex, calcium powder, color paste, thickener and reinforcing materials.

[0031] The cooling straw fiber 2, calculated by mass percentage, comprises the following raw materials: 50-95% polyethylene (PE), 5-50% polypropylene (PP), 4-10% coloring masterbatch, 2-5% processing aids, 3-8% filler masterbatch, and 5-10% cooling masterbatch. The cooling masterbatch includes one or both of titanium dioxide and zinc oxide. Preferably, titanium dioxide and zinc oxide can be used alone or in combination. When used in combination, the mass ratio of titanium dioxide to zinc oxide is 7:3.

[0032] This invention uses PE and PP as the main raw materials to prepare cooling grass fibers 2. Cooling grass fibers 2 have sufficient toughness. The function of the cooling masterbatch is to reflect infrared rays and prevent the artificial turf from getting too hot. In addition, cooling grass fibers 2 have good thermal conductivity and also have a certain heat dissipation effect. When the artificial turf is in a collapsed state, the wind can carry away the heat.

[0033] Specifically, the polyethylene is linear low-density polyethylene with a density of 0.92–0.93 g / cm³. 3 The melt flow rate is 2–5 g / 10 min. The polypropylene is a homopolymer with a density of 0.90–0.91 g / cm³. 3 The melt flow rate is 20-30 g / 10 min.

[0034] Specifically, processing aids include slip agents, UV absorbers, and light stabilizers. The filler masterbatch consists of 80% calcium carbonate and / or silica with a particle size of 3000–5000 mesh.

[0035] It should be noted that the cooling grass fibers 2 need to be formed into a bent and disordered shape on the base fabric 1, and need to be processed before use. In this invention, the cooling grass fibers 2 are processed into a bent state by a high-temperature air deformation processing method. For the specific preparation process, please refer to the production method of simulated artificial turf with antistatic and cooling functions.

[0036] Specifically, the high-temperature air deformation processing parameters are: air deformation temperature 130–230℃; compressed air intake volume 30–120 cm³. 3 / s; winding tension is 600~1000cN; more preferably, the process parameters are: air temperature is 180℃; compressed air intake is 80cm 3 / s; winding tension is 850cN.

[0037] Calculated by mass percentage, conductive straw filament 3 comprises 80-95% polyethylene (PE), 5-20% POE, 3-6% coloring masterbatch, 4-8% processing aids, and 4-6% conductive masterbatch, wherein the conductive masterbatch includes high-conductivity carbon black.

[0038] The difference between non-conductive straw filament 4 and conductive straw filament 3 is that non-conductive straw filament 4 does not contain conductive masterbatch. Conductive straw filament 3 comprises 80-95% polyethylene (PE), 5-20% POE, 3-6% coloring masterbatch, and 4-8% processing aids.

[0039] It should be noted that the conductive masterbatch is black. After the conductive masterbatch is added to the raw material, the overall color of the grass fibers is darker and blacker, which is not as good as the non-conductive grass fibers 4 and the simulation is poor. Preferably, a cluster of antistatic cooling grass fibers contains 1 to 3 strands of conductive grass fibers 3 to avoid the overall color of the artificial turf being too black and to achieve a high degree of simulation.

[0040] Furthermore, each clump of antistatic cooling grass fibers contains 8–16 cooling grass fibers 2, 1–3 conductive grass fibers 3, and 6–12 non-conductive grass fibers 4. Too few cooling grass fibers 2 result in poor lawn cooling effect, while too many cooling grass fibers 2 lead to poor overall lawn appearance and performance. Too many non-conductive grass fibers 4 increase the area obstructing the cooling grass fibers 2, reducing infrared reflection and decreasing cooling effect; too many or too few non-conductive grass fibers 4 also affect appearance and performance. Figure 1 It is only a partial schematic diagram showing a cluster of antistatic cooling grass fibers, showing the positional relationship between cooling grass fibers, conductive grass fibers and non-conductive grass fibers, and limiting the quantity or ratio of the three types of grass fibers.

[0041] More preferably, in each cluster of antistatic cooling grass fibers, the ratio of cooling grass fibers 2, non-conductive grass fibers 4, and conductive grass fibers 3 is 8:6:1.

[0042] More preferably, the length ratio of the conductive grass fibers 3 to the non-conductive grass fibers 4 is also related. In order to avoid the conductive grass fibers 3 affecting the appearance of the lawn, the length of the conductive grass fibers 3 is less than or equal to the length of the non-conductive grass fibers 4. For example, the length ratio of the conductive grass fibers 3 to the non-conductive grass fibers 4 is (0.8 to 1):1. More preferably, the length of the conductive grass fibers 3 is equal to the length of the non-conductive grass fibers 4.

[0043] Specifically, the polyethylene is linear low-density polyethylene with a density of 0.92–0.93 g / cm³. 3 The melt flow rate is 2–5 g / 10 min. POE is an ethylene-octene polymer with a density of 0.87–0.89 g / cm³. 3 The melt flow rate is 30–35 g / 10 min. Processing aids include slip agents, UV absorbers, and light stabilizers.

[0044] In this invention, a cluster of antistatic and cooling grass fibers comprises cooling grass fibers 2, conductive grass fibers 3, and non-conductive grass fibers 4, with cooling grass fibers 2 and non-conductive grass fibers 4 being the main components. The non-conductive grass fibers 4 are straight, with a smaller area exposed to direct sunlight, while the curved and flattened cooling grass fibers 2 have a much larger area exposed to direct sunlight, resulting in excellent cooling effects. The conductive grass fibers 3 are interspersed among them, conducting away static electricity carried by other grass fibers in the same cluster, thus playing an antistatic role. This invention combines the curved and straight grass fibers through a stranding method, with the curved cooling grass fibers 2 covering the base fabric 1, improving the overall softness of the artificial turf and making it closer to the feel of real natural grass, thereby enhancing the simulation of artificial grass fibers.

[0045] This invention also provides a method for producing simulated artificial turf with antistatic and cooling functions, including the manufacture of cooling grass fibers 2, conductive grass fibers 3, non-conductive grass fibers 4, and the manufacture of artificial turf, as detailed below:

[0046] Manufacturing of cooling grass filament 2: After the raw materials such as polyethylene, polypropylene, coloring masterbatch, processing aid, filler masterbatch and cooling masterbatch are mixed evenly, straight monofilaments are obtained by extrusion stretching and winding shaping. The straight monofilaments are then processed into curved cooling grass filament 2 by high temperature air deformation processing method, and are ready for use.

[0047] Manufacturing of conductive straw filament 3: After the raw materials such as polyethylene, POE, coloring masterbatch, processing aids and conductive masterbatch are mixed evenly, the straight conductive straw filament 3 is obtained by extrusion stretching and winding shaping, and then ready for use.

[0048] Manufacturing of non-conductive straw filament 4: After mixing polyethylene, POE, coloring masterbatch, processing aids and other raw materials evenly, the mixture is extruded, stretched and wound to obtain straight conductive straw filament 3, which is ready for use.

[0049] Manufacturing of artificial turf: Cooling grass fibers 2, conductive grass fibers 3, and non-conductive grass fibers 4 are twisted together. The curved cooling grass fibers 2 are interwoven with the straight conductive grass fibers 3 and non-conductive grass fibers 4 to form single clusters of antistatic cooling grass fibers. Multiple clusters of antistatic cooling grass fibers are woven onto a base fabric 1. Latex is coated on the bottom surface of the base fabric 1 to form a latex layer. The ends of the antistatic cooling grass fibers are bonded and fixed to the base fabric 1 to obtain artificial turf.

[0050] The effects of the present invention will be illustrated below through specific embodiments.

[0051] Within each clump of antistatic and cooling grass fibers, the ratio of cooling grass fibers 2, non-conductive grass fibers 4, and conductive grass fibers 3 is 8:6:1, with the fibers combined and intertwined. Artificial turf was manufactured using these antistatic and cooling grass fibers, and its cooling and antistatic effects were tested as follows:

[0052] Cooling test method and test data:

[0053] The cooling and antistatic artificial turf produced by this invention was compared with conventional artificial turf sold on the market. An infrared electric heating lamp was fixed in place and powered on. Test turf was placed at a designated location below the lamp, the power switch was turned on, and testing was conducted. An infrared thermometer was used to measure the initial temperature of the turf surface within a designated area (distance was measured with a ruler and marked; samples were taken from the same area for each data measurement). Subsequently, the turf was sampled and tested every 10 minutes, and the temperature was recorded (see Table 1).

[0054] Table 1 Cooling Test Data

[0055] Conventional artificial turf Cooling and anti-static artificial turf Time / min Temperature / °C Temperature / °C 0 38.6 34.7 10 78.1 66.7 20 77.8 70.1 30 79.7 70.5 40 80.4 70.8 50 79.6 70.4 60 80.2 70.6 70 79.7 70.6 80 80.5 70.2 90 80.1 70.6

[0056] Antistatic testing methods and test data:

[0057] The test method is JIS A1445-2007, and the test data is shown in Table 2.

[0058] Table 2 Antistatic Test Data

[0059]

[0060] It is evident that the artificial turf of the present invention has good cooling and antistatic effects.

[0061] The embodiments provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention, and the descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A simulated artificial turf with antistatic and cooling functions, characterized in that, The device includes a base fabric (1) and multiple tufts of antistatic cooling grass fibers on the base fabric (1). A latex layer is provided on the bottom surface of the base fabric (1) to fix the antistatic cooling grass fibers to the base fabric (1). The antistatic cooling grass fibers include bent and flattened cooling grass fibers (2), straight conductive grass fibers (3), and straight non-conductive grass fibers (4). The cooling grass fibers (2), the non-conductive grass fibers (4), and the conductive grass fibers (3) are combined by plying to form antistatic cooling grass fibers. Each cluster of antistatic cooling grass fibers contains 8-16 strands of cooling grass fibers (2), 1-3 strands of conductive grass fibers (3), and 6-12 strands of non-conductive grass fibers (4). Within each cluster of antistatic cooling grass fibers, the ratio of the number of strands of cooling grass fibers (2), non-conductive grass fibers (4), and conductive grass fibers (3) is 8:6:1, and the length ratio of conductive grass fibers (3) to non-conductive grass fibers (4) is (0.8-1):

1.

2. The simulated artificial turf according to claim 1, characterized in that, The cooling straw (2) comprises the following raw materials: 50-95% polyethylene, 5-50% polypropylene, 4-10% coloring masterbatch, 2-5% processing aid, 3-8% filler masterbatch and 5-10% cooling masterbatch, wherein the cooling masterbatch comprises one or both of titanium dioxide and zinc oxide.

3. The simulated artificial turf according to claim 1, characterized in that, The conductive straw (3) comprises 80-95% polyethylene, 5-20% POE, 3-6% coloring masterbatch, 4-8% processing aids and 4-6% conductive masterbatch, wherein the conductive masterbatch comprises high-conductivity carbon black.

4. The simulated artificial turf according to claim 2, characterized in that, The mass ratio of titanium dioxide to zinc oxide is 7:

3.

5. The simulated artificial turf according to claim 2, characterized in that, The filler masterbatch comprises 80% calcium carbonate and / or silicon dioxide, with a particle size of 3000-5000 mesh.

6. A method for producing simulated artificial turf with antistatic and cooling functions, characterized in that, The method for manufacturing the simulated artificial turf as described in any one of claims 1-5 includes the manufacturing of cooling grass fibers (2), the manufacturing of conductive grass fibers (3), the manufacturing of non-conductive grass fibers (4), and the manufacturing of artificial turf, as detailed below: Manufacturing of cooling grass filaments (2): After the raw materials are mixed evenly, straight monofilaments are obtained by extrusion stretching and winding. The straight monofilaments are then processed into curved cooling grass filaments (2) for later use. Manufacturing of conductive straw filaments (3): After the raw materials are mixed evenly, they are extruded, stretched and wound to obtain straight conductive straw filaments (3), which are ready for use; Manufacturing of non-conductive straw filaments (4): After the raw materials are mixed evenly, straight non-conductive straw filaments (4) are obtained by extrusion stretching and winding shaping, and then set for use; Manufacturing of artificial turf: Cooling grass fibers (2), conductive grass fibers (3) and non-conductive grass fibers (4) are twisted together. Among them, the curved cooling grass fibers (2) are interwoven with the straight conductive grass fibers (3) and non-conductive grass fibers (4) to form a single cluster of antistatic cooling grass fibers. Multiple clusters of antistatic cooling grass fibers are woven onto the base fabric (1). Latex is coated on the bottom surface of the base fabric (1) to form a latex layer. The ends of the antistatic cooling grass fibers are bonded and fixed to the base fabric (1) to obtain artificial turf.

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