Low-temperature artificial turf system

Abstract

The utility model discloses a low-temperature type artificial turf system. The low-temperature type artificial turf system comprises high-heat-conduction artificial grass, a heat-conduction TPE (Thermoplastic Elastomer) filling layer, a heat-insulation layer and a quartz sand filling layer, according to the utility model, the high-heat-conductivity artificial grass is matched with the layered structure of the heat-conducting TPE filling layer, the heat-insulating layer and the quartz sand filling layer, and the material component proportion of each layer is specifically improved, so that the heat on the surface of the lawn can be effectively conducted in multiple ways, the heat dissipation performance of the artificial lawn system is obviously improved, and the service life of the artificial lawn system is prolonged. The surface temperature of an artificial turf system is reduced, the burning heat feeling caused by the artificial turf to people is reduced, the motion feeling of sports people is more comfortable, the sports performance is enhanced, and the injury risks such as scratches and burns caused by the high temperature of the surface of the turf are avoided.

Description

Technical Field

[0001] This utility model relates to the field of artificial turf, specifically to a low-temperature artificial turf system. Background Technology

[0002] Artificial turf is an important surface material for various sports fields such as football fields, rugby fields, and tennis courts, and its demand continues to grow with the popularization of sports. Whether in professional sports stadiums or amateur sports fields in schools and communities, higher requirements are being placed on the performance and quality of artificial turf.

[0003] Because artificial turf lacks the cooling effect of natural grass fibers evaporating moisture into the air, it absorbs heat more easily and has relatively poor heat dissipation. When heat accumulates, the surface temperature of the turf rises continuously, making people more likely to experience discomfort and burning sensations during outdoor activities. This leads to excessive sweating, a rapid decline in physical performance, reduced athletic performance, and an increased risk of scratches and burns. Studies have shown that in high-temperature outdoor environments, the surface temperature of artificial turf can be more than 15°C higher than that of natural grass.

[0004] Therefore, improving the cooling and heat dissipation effect of artificial turf systems, enhancing the comfort of athletes, and reducing the risk of injury to athletes in high-temperature environments is a problem that needs to be solved in this field. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a low-temperature artificial turf system, which can solve the problems of high surface temperature and poor heat dissipation of existing artificial turf.

[0006] This utility model is achieved through the following technical solution:

[0007] A low-temperature artificial turf system includes: high thermal conductivity artificial turf fibers, the high thermal conductivity artificial turf fibers being made of artificial turf fibers, the artificial turf fibers being for added thermal conductivity with any one or more of the following: boron nitride, silicon carbide expanded graphite, and graphite nanosheets; a laying portion including, from top to bottom: a thermally conductive TPE filling layer, a thermal insulation layer, and a quartz sand filling layer; the thermally conductive TPE filling layer comprising a thermally conductive TPE material, the thermally conductive TPE material further containing boron nitride, silicon carbide expanded graphite, and graphite nanosheets for added thermal conductivity. The insulation layer comprises one or more of expanded silicon graphite, graphite nanosheets, and alumina; the aerogel material is one or more of silica aerogel, polyurethane aerogel, and polyamide aerogel; the quartz sand filling layer comprises a mixture of quartz sand and high thermal conductivity particles, the high thermal conductivity particles being made of one or more of alumina and boron nitride; the high thermal conductivity artificial grass fibers are uniformly arranged in the laying section, and the lower ends of the high thermal conductivity artificial grass fibers are inserted into the quartz sand filling layer.

[0008] Furthermore, the weight percentage of any one or more of boron nitride, silicon carbide expanded graphite, and graphite nanosheets added to the artificial grass fibers is 10% to 30%.

[0009] Furthermore, the thermally conductive TPE material contains 20% to 50% by weight of any one or more of boron nitride, silicon carbide expanded graphite, graphite nanosheets, and alumina; the TPE thermally conductive layer is added at a weight of 3 kg to 8 kg per square meter of artificial turf, with a filling thickness of 10 mm to 25 mm.

[0010] Furthermore, the thickness of the heat insulation layer is 10mm to 30mm.

[0011] Furthermore, in the quartz sand filling layer, the added weight percentage of the high thermal conductivity particles is 30% to 50%.

[0012] Furthermore, multiple micro heat dissipation channels are formed inside the thermally conductive TPE filling layer, and these multiple micro heat dissipation channels together form any one of a honeycomb structure, a grid structure, or a spiral structure on a plane.

[0013] Furthermore, the micro heat dissipation channel is filled with circulating coolant.

[0014] Furthermore, the micro heat dissipation channel is filled with a highly absorbent material, which is any one of the following: polymeric absorbent material, mineral absorbent material, fiber absorbent material, or silicone absorbent material.

[0015] Furthermore, the polymeric absorbent material is polyacrylamide or sodium polyacrylate; the mineral absorbent material includes bentonite and diatomaceous earth; the fiber absorbent material is wood pulp fiber or polyester fiber; and the silica gel absorbent material is silica gel.

[0016] Furthermore, the outer layer of the high thermal conductivity artificial grass filament is coated with a nano heat dissipation coating for reflecting and radiating infrared rays; the nano heat dissipation coating is a graphene nano coating, which is in the form of a thin film and fixed to the outer layer of the high thermal conductivity artificial grass filament.

[0017] Compared with existing technologies, the beneficial effects that this utility model can achieve are as follows:

[0018] In this invention, high thermal conductivity artificial grass fibers are inserted into the laying section on the horizontal installation surface. The laying section includes, from top to bottom, a thermally conductive TPE filling layer, a heat insulation layer, and a quartz sand filling layer.

[0019] The high-heat artificial turf fibers serve as the heat-conducting nodes of the entire turf system, transferring the heat absorbed by the turf system into the quartz sand filling layer to prevent heat accumulation on the turf surface and thus reduce the turf surface temperature. Within the artificial turf fibers, one or more thermally conductive materials selected from boron nitride, silicon carbide expanded graphite, and graphite nanosheets are added, significantly improving the thermal conductivity of the artificial turf fibers.

[0020] The main function of the thermally conductive TPE infill layer is to maintain the overall temperature uniformity of the entire turf system, preventing excessively high temperatures in certain areas. It can also diffuse heat laterally throughout the system, reducing the surface temperature of the turf to some extent. Furthermore, the entire thermally conductive TPE infill layer can rapidly transfer heat from the high thermal conductivity artificial turf fibers to the quartz sand infill layer. Adding one or more thermally conductive materials such as boron nitride, silicon carbide expanded graphite, graphite nanosheets, and alumina to the thermally conductive TPE material significantly improves its thermal conductivity.

[0021] The insulation layer acts as a control valve for the lawn system, preventing excessive heat infiltration from the lawn. This prevents excessive heat from entering the quartz sand filling layer, which would otherwise prevent the heat from being completely dissipated, causing heat accumulation and raising the lawn temperature.

[0022] The main function of the quartz sand filling layer is to effectively transfer the heat introduced from the lawn surface to the ground surface, preventing heat accumulation and causing the lawn temperature to rise.

[0023] This invention utilizes a layered structure combining high thermal conductivity artificial turf fibers with a thermally conductive TPE filling layer, an insulation layer, and a quartz sand filling layer. By making specific improvements to the material composition ratio of each layer, heat from the turf surface can be effectively conducted in multiple ways, significantly improving the heat dissipation performance of the artificial turf system, reducing the surface temperature of the artificial turf system, reducing the scorching sensation caused by artificial turf, making athletes feel more comfortable, enhancing athletic performance, and avoiding the risk of injuries such as scratches and burns caused by high temperatures on the turf surface. Attached Figure Description

[0024] Figure 1 The image shown is a cross-sectional view of the artificial turf system.

[0025] Figure 2 The diagram shown is a schematic of a miniature heat dissipation channel.

[0026] In the diagram: 10, high thermal conductivity artificial grass fibers; 20, thermally conductive TPE filling layer; 21, micro heat dissipation channels; 30, heat insulation layer; 40, quartz sand filling layer. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] See Figure 1 This utility model discloses a low-temperature artificial turf system, comprising: high thermal conductivity artificial turf fibers 10 and a laying section; the laying section is a multi-layered structure laid on a horizontal surface, comprising, from top to bottom: a thermally conductive TPE filling layer 20, a heat insulation layer 30, and a quartz sand filling layer 40. The high thermal conductivity artificial turf fibers 10 are evenly arranged on the laying section, and the lower end of the high thermal conductivity artificial turf fibers 10 is inserted into the quartz sand filling layer 40.

[0032] The high thermal conductivity artificial turf fibers 10 are made of artificial turf fibers, and the matrix of the artificial turf fibers can be made of conventional PA, PE, or PP materials. A thermally conductive material is also added to the matrix of the artificial turf fibers; this material can be any one or more of boron nitride, silicon carbide expanded graphite, and graphite nanosheets. As a heat-conducting node in the entire turf system, the high thermal conductivity artificial turf fibers transfer the heat absorbed by the turf system to the quartz sand filling layer 40, preventing heat accumulation on the turf surface and thus reducing the turf surface temperature. By adding any one or more thermally conductive materials such as boron nitride, silicon carbide expanded graphite, and graphite nanosheets to the artificial turf fibers, the thermal conductivity of the artificial turf fibers is significantly improved.

[0033] Preferably, the thermally conductive material is added to the artificial grass fiber at a weight percentage of 10% to 30%. If the addition ratio is too low, the improvement on the thermal conductivity of the grass fiber will be limited; if the addition ratio is too high, it will have a certain adverse effect on the mechanical properties and processing properties of the grass fiber. After comparison, 10% to 30% is the preferred ratio, which can simultaneously achieve good thermal conductivity, mechanical properties and processing properties.

[0034] The thermally conductive TPE filler layer 20 comprises a thermally conductive TPE material, the formulation of which includes one or more of boron nitride, expanded silicon carbide graphite, graphite nanosheets, and alumina. The main function of the thermally conductive TPE filler layer 20 is to maintain the overall temperature uniformity of the entire turf system, preventing excessively high temperatures in certain areas; it can also diffuse heat laterally throughout the turf system, thus reducing the surface temperature of the turf to some extent. Furthermore, the entire thermally conductive TPE filler layer 20 can rapidly transfer heat from the high thermal conductivity artificial turf fibers 10 to the quartz sand filler layer 40. The addition of one or more thermally conductive materials such as boron nitride, expanded silicon carbide graphite, graphite nanosheets, and alumina to the thermally conductive TPE material significantly improves the thermal conductivity of the TPE material.

[0035] Preferably, the weight percentage of one or more thermally conductive materials such as boron nitride, expanded silicon carbide graphite, graphite nanosheets, and alumina added to the thermally conductive TPE material is 20% to 50%. If the addition ratio is too low, the improvement in thermal performance will be limited; if the addition ratio is too high, the cost will be too high and it will have an adverse effect on the processing performance. Preferably, the weight of the TPE thermally conductive layer added to each square meter of artificial turf is 3 kg to 8 kg, and the filling thickness is 10 mm to 25 mm.

[0036] The insulation layer 30 includes an aerogel material, which can be any one or more of silica aerogel, polyurethane aerogel, and polyamide aerogel. The insulation layer 30 acts as a control valve for the lawn system, preventing excessive heat infiltration from the lawn and thus preventing excessive heat transfer into the quartz sand filling layer 40, which would prevent heat from being completely dissipated, leading to heat accumulation and an increase in lawn temperature.

[0037] Preferably, the thickness of the heat insulation layer 30 is 10mm to 30mm.

[0038] The quartz sand infill layer 40 comprises a mixture of quartz sand and highly thermally conductive particles, wherein the highly thermally conductive particles are made of any one or more of alumina and boron nitride. The main function of the quartz sand infill layer 40 is to effectively dissipate heat introduced from the lawn surface to the ground surface, preventing heat accumulation and thus avoiding an increase in lawn temperature.

[0039] Preferably, in the quartz sand filling layer 40, the weight percentage of the added high thermal conductivity particles is 30% to 50%.

[0040] This invention utilizes a layered structure consisting of high thermal conductivity artificial turf fibers 10, a thermally conductive TPE filling layer 20, a heat insulation layer 30, and a quartz sand filling layer 40. By making specific improvements to the material composition ratio of each layer, the heat on the turf surface can be effectively conducted in multiple ways, significantly improving the heat dissipation performance of the artificial turf system, reducing the surface temperature of the artificial turf system, reducing the burning sensation caused by the artificial turf, making the experience more comfortable for athletes, enhancing athletic performance, and avoiding the risk of injuries such as scratches and burns caused by high temperatures on the turf surface.

[0041] To further improve the heat dissipation performance of the lawn system, preferably, refer to Figure 2 Numerous micro-heat dissipation channels 21 are formed inside the thermally conductive TPE filling layer 20. These micro-heat dissipation channels 21 can be arranged in any one or a combination of honeycomb, mesh, or spiral structures on a plane. By designing a heat dissipation channel structure within the thermally conductive TPE filling layer 20, the ability of heat to diffuse laterally is enhanced, further reducing the surface temperature of the turf. At the same time, its loose and porous structure also facilitates the faster transfer of heat from the artificial grass fibers into the quartz sand filling layer 40.

[0042] The micro heat dissipation channel 21 can be filled with cooling materials or media to further improve its heat dissipation performance and cooling effect.

[0043] Preferably, in one embodiment, circulating coolant can be introduced into the micro heat dissipation channel 21 to exchange heat through the refrigerant and remove heat from the TPE thermal conductive layer.

[0044] In another embodiment, the micro heat dissipation channel 21 can be filled with a highly absorbent material, which can be any one of polymeric absorbent materials, mineral absorbent materials, fiber absorbent materials, or silicone absorbent materials.

[0045] Filling the micro-heat dissipation channels 21 with highly absorbent material can effectively cool the lawn surface. The principle is that at night when the ambient temperature is low, the highly absorbent material, due to its own properties, can effectively absorb moisture from the outside air and store the moisture through its loose and porous internal structure. Because the ambient temperature is low, the stored moisture does not easily evaporate. During the day when the ambient temperature is high, as the air temperature rises, the moisture stored in the highly absorbent material gradually evaporates. The moisture rises and evaporates into the space around the artificial turf fibers. The evaporation process absorbs the heat from the surrounding area, thereby significantly reducing the temperature of the artificial turf fibers on the lawn surface.

[0046] Specifically, superabsorbent polymers can be polyacrylamide or sodium polyacrylate, or other known superabsorbent polymers. Mineral absorbent materials can be a mixture of bentonite and diatomaceous earth, or other known mineral absorbent materials such as limestone, coconut activated carbon, etc. Fiber absorbent materials can be wood pulp fibers or polyester fibers, or other known fiber absorbent materials. Silica gel absorbent materials can be silica gel, or other known silica gel absorbent materials.

[0047] In addition to improving the structure or components of each layer of the aforementioned laying section, this invention also improves the structure of the artificial turf fibers to further enhance the heat dissipation performance of the turf system. Preferably, a nano-heat dissipation coating is also coated on the outer layer of the high thermal conductivity artificial turf fibers 10, which can effectively reflect and radiate infrared light in sunlight, reduce the heat absorption rate of the artificial turf fibers, and improve the heat radiation efficiency.

[0048] In addition to heat dissipation performance, the selection of nano-heat dissipation coatings also needs to consider the compatibility and adhesion between the coating and the artificial grass fiber substrate. Specifically, the nano-heat dissipation coating can be a graphene nano-coating (such as XHC-999), which can be obtained by high temperature and high pressure chemical methods to obtain graphene films and uniformly coated on the outer layer of high thermal conductivity artificial grass fiber 10 to form a layered protective film structure.

[0049] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A low-temperature artificial turf system, characterized in that, include: High thermal conductivity artificial grass filaments, wherein the high thermal conductivity artificial grass filaments are made of artificial grass fibers; The laying section includes, from top to bottom, the following layers laid sequentially: a thermally conductive TPE filler layer, a thermal insulation layer, and a quartz sand filler layer; the thermally conductive TPE filler layer comprises thermally conductive TPE material; the thermal insulation layer comprises aerogel material, wherein the aerogel material is any one or more of silica aerogel, polyurethane aerogel, and polyamide aerogel; the quartz sand filler layer comprises a mixture of quartz sand and highly thermally conductive particles; The high thermal conductivity artificial grass fibers are evenly arranged in the laying section, and the lower end of the high thermal conductivity artificial grass fibers is inserted into the quartz sand filling layer.

2. The low-temperature artificial turf system as described in claim 1, characterized in that, The thickness of the insulation layer is 10mm to 30mm.

3. The low-temperature artificial turf system as described in claim 1, characterized in that, Multiple micro heat dissipation channels are formed inside the thermally conductive TPE filling layer, and these micro heat dissipation channels together form any one of a honeycomb structure, a grid structure, or a spiral structure on a plane.

4. The low-temperature artificial turf system as described in claim 3, characterized in that, The miniature heat dissipation channel is filled with circulating coolant.

5. The low-temperature artificial turf system as described in claim 3, characterized in that, The micro heat dissipation channel is filled with a highly absorbent material, which is any one of the following: polymeric absorbent material, mineral absorbent material, fiber absorbent material, or silicone absorbent material.

6. The low-temperature artificial turf system as described in claim 5, characterized in that, The polymeric absorbent material is polyacrylamide or sodium polyacrylate; the mineral absorbent material includes bentonite and diatomaceous earth; the fiber absorbent material is wood pulp fiber or polyester fiber; and the silica gel absorbent material is silica gel.

7. The low-temperature artificial turf system as described in claim 1, characterized in that, The outer layer of the high thermal conductivity artificial grass filament is also coated with a nano heat dissipation coating for reflecting and radiating infrared rays; the nano heat dissipation coating is a graphene nano coating, which is in the form of a thin film and fixed to the outer layer of the high thermal conductivity artificial grass filament.

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