High-weatherability artificial turf and method for manufacturing the same
By using a microcapsule complex combined with hydroxypropyl methylcellulose in artificial turf, the problems of elasticity and wear resistance of artificial turf in complex environments have been solved, and the stability and strength at high and low temperatures have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG BIYUAN ARTIFICIAL TURF CO LTD
- Filing Date
- 2025-12-24
- Publication Date
- 2026-07-03
AI Technical Summary
Existing artificial turf suffers from insufficient elasticity, brittleness, and poor abrasion resistance in complex temperature and humidity environments.
By employing a microcapsule complex and hydroxypropyl methylcellulose composite structure, and through the combination of phase change materials and functional additives, a highly weather-resistant artificial turf is formed, which enhances the elasticity and mechanical strength of the grass fibers and reduces the rate of thermal oxidation and aging.
Artificial turf maintains stable elasticity and strength under high and low temperature conditions, improves wear resistance, and reduces the risk of material brittleness and thermal oxidation rate.
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of polymer composition technology, specifically relating to a highly weather-resistant artificial turf and its preparation method. Background Technology
[0002] Artificial turf is a substitute for natural grass made of synthetic fibers. It can mimic the feel and sports performance of natural grass to a certain extent. In addition, compared with natural grass, artificial turf has the advantages of being more wear-resistant, usable in all weather conditions, low maintenance costs, and easy to install. Artificial turf generally consists of artificial grass fibers, backing adhesive, and base fabric. Among them, artificial grass fibers are mostly made of polyethylene or polypropylene. However, they still have some shortcomings in terms of weather resistance. For example, high temperatures in summer will accelerate the aging and breakage of the grass fibers; in low temperatures in winter, the grass fibers lack elasticity and are prone to brittleness.
[0003] Chinese patent CN106854379A discloses an artificial turf, which, by weight, is composed of the following components: 3-5 parts styrene-butadiene latex, 6-8 parts zinc silicate, 20-30 parts environmentally friendly plasticizer, 1-3 parts softener, 13-15 parts talc, 60-70 parts plastic, 1-3 parts stearic acid, 3-5 parts antistatic agent, 6-10 parts stone powder, 6-8 parts kaolin, 1-3 parts drawing powder, 12-14 parts calcium carbonate, 2-4 parts reinforcing agent, and 1-3 parts polycarbonate.
[0004] Compared to styrene-butadiene latex matrix, the use of inorganic fillers such as talc in this patent can easily make the surface of artificial turf fibers too smooth, reducing the friction of artificial turf. At the same time, inorganic fillers are prone to absorbing water in humid environments, adhering to the surface of artificial turf fibers to form a water film, further reducing friction and hindering its widespread application.
[0005] Chinese patent CN104419068A discloses an artificial turf, which, by weight, comprises the following components: 100 parts polypropylene, 40-60 parts modified polyphenylene sulfide, and 10-20 parts ethylene-vinyl acetate copolymer; wherein the modified polyphenylene sulfide includes polyphenylene sulfide and hyperbranched polyphenylene sulfide, with a weight ratio of 100:55-65.
[0006] Modified polyphenylene sulfide includes polyphenylene sulfide and hyperbranched polyphenylene sulfide. Polyphenylene sulfide is a high-performance engineering plastic with high rigidity and dimensional stability. The addition of hyperbranched polyphenylene sulfide is to improve the processing and compatibility of polyphenylene sulfide. The addition of the modified polyphenylene sulfide in this patent further increases the rigidity and hardness of artificial turf, but it will affect the elasticity of artificial turf. Summary of the Invention
[0007] The purpose of this invention is to provide a highly weather-resistant artificial turf that maintains stable elasticity, strength, and wear resistance even in complex temperature and humidity environments; this invention also provides a method for preparing artificial turf.
[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0009] The high weather-resistant artificial turf of the present invention comprises, by weight parts: 125-160 parts of matrix resin, 8-12 parts of coloring masterbatch, 6-8.5 parts of microcapsule complex, 5.8-10 parts of functional additives, and 3-7 parts of lubricant; wherein the preparation process of the microcapsule complex includes the following steps:
[0010] S1. Mix the phase change material, diisocyanate and erucamide to obtain the oil phase;
[0011] S2. Mix hydroxypropyl methylcellulose, surfactant and water, adjust pH to obtain aqueous phase A;
[0012] S3. Mix the polyamine and water to obtain aqueous phase B;
[0013] S4. Add the aqueous phase A to the oil phase while stirring once, and then stir a second time after the addition is complete to obtain an emulsion.
[0014] S5. Add aqueous phase B to the emulsion to carry out the reaction. After the reaction is complete, adjust the pH to neutral and perform post-processing to obtain the microcapsule complex.
[0015] in:
[0016] The matrix resin is composed of 30-55 parts of high-density polyethylene and 95-105 parts of linear low-density polyethylene; the functional additives include antistatic agents, antioxidants, light stabilizers and flame retardants, wherein the antistatic agent is 1.1-1.5 parts, the antioxidant is 0.8-1.6 parts, the light stabilizer is 0.7-1.1 parts and the flame retardant is 3.2-5.8 parts.
[0017] The antistatic agent is one of fatty acid diethanolamide, N,N-dihydroxyethyl octadecylamine or octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate; the antioxidant is one of antioxidant 1076, antioxidant 1098 or antioxidant 168; the light stabilizer is one of UV-326, UV-531 or UV-1164; the flame retardant is one of triphenyl phosphate, dimethyl methylphosphonate or resorcinol bis(diphenyl phosphate); and the lubricant is one of polyethylene wax, methyl silicone oil or zinc stearate.
[0018] In S1, the phase change material is butyl stearate, the diisocyanate is isophorone diisocyanate or toluene-2,4-diisocyanate, and the mass ratio of phase change material, diisocyanate and erucamide is (26~30):(12~16):(0.25~0.35).
[0019] In S2, the surfactant is one of sodium dodecyl ether sulfate, disodium lauryl sulfosuccinate, or sodium lauryl sulfate; the mass ratio of hydroxypropyl methylcellulose, water, and surfactant is (1.6~2.8):(10~15):(0.38~0.52); and the pH is adjusted to 7.8~8.2.
[0020] In S3, the polyamines include triethylenetetramine and diethylenetriamine, and the mass ratio of triethylenetetramine, diethylenetriamine and water is (1~1.8):3:(15~25).
[0021] In S4, the addition rate is 0.9~1.3 kg / min, the first stirring rate is 200~400 rpm, the second stirring rate is 2300~3000 rpm, and the second stirring time is 5~8 min.
[0022] In the S5 process, the addition rate is 0.5~0.7 kg / min, the reaction temperature is 35~45℃, and the reaction time is 1~2 h. The post-treatment includes centrifugation, organic solvent washing, water washing, and drying, wherein the organic solvent is one of methanol, ethanol, or tetrahydrofuran, the drying temperature is 40~60℃, and the drying time is 12~16 h.
[0023] The method for preparing the high weather-resistant artificial turf of the present invention includes the following steps:
[0024] (1) The matrix resin, coloring masterbatch, microcapsule complex, functional additives and lubricant are premixed, and then melt extruded, drawn and shaped to obtain artificial grass fibers;
[0025] (2) The artificial grass fibers are embedded in the base fabric, coated with adhesive, cut and rolled to obtain a high weather-resistant artificial turf.
[0026] in:
[0027] In step (1), the premixing rate is 80~120 r / min, the premixing temperature is 90~120℃, the premixing time is 8~15 min; the melt extrusion temperature is 190~200℃; the drawing temperature is 135~160℃, the drawing ratio is 2~4; the setting temperature is 80~100℃, the setting time is 15~20 min, and the linear density of the artificial grass fiber is 7000~8000 dtex.
[0028] In step (2), the artificial turf has a grass height of 42-58 mm, a needle pitch of 5 / 8 inch, and a grass fiber density of 10,500-11,500 tufts / m². 2 .
[0029] The beneficial effects of this invention are as follows:
[0030] This invention uses diisocyanate and polyamine as shell materials and phase change material as core material to make microcapsules, which are then combined with hydroxypropyl methylcellulose and water to form a microcapsule-hydroxypropyl methylcellulose composite structure. Erucamide is used as an emulsifier for preparing microcapsules and can also form hydrogen bonds with water and hydroxypropyl methylcellulose. These hydrogen bonds provide a polar connection between the microcapsule shell and hydroxypropyl methylcellulose, helping to maintain the stability of the microcapsule-hydroxypropyl methylcellulose composite structure without compromising the overall mechanical strength of the microcapsule shell. Erucamide molecules possess C22 long-chain unsaturated alkyl groups, exhibiting hydrophobicity and the ability to form a hydrophobic layer at the oil / water phase interface. When the oil phase and water phase A are mixed, the erucamide in the oil phase and the surfactant in water phase A can jointly form a film between the oil and water phases. The low interfacial tension generated at the oil-water interface helps the hydrophilic component of hydroxypropyl methylcellulose in water phase A to be uniformly deposited on the surface of the oil droplets. This amphiphilic structure allows the microcapsule shell to be compatible with the internal butyl stearate (oil phase) and the external hydroxypropyl methylcellulose (water phase A), ensuring the high permeability of hydroxypropyl methylcellulose in the microcapsule shell material and the integrity of the microcapsule-hydroxypropyl methylcellulose composite structure. Furthermore, the long-chain alkyl groups of erucamide and the long-chain alkyl groups of the surfactant are intertwined, further enhancing the stability of the microcapsule-hydroxypropyl methylcellulose composite structure.
[0031] Hydroxypropyl methylcellulose (HMC) can fill the layered structure of microcapsule shells and between microcapsules by utilizing the hydrophilicity of the microcapsule shell material. On the one hand, it inhibits the formation of a continuous water film on the surface of the grass fibers by utilizing its own hydrophilicity and capillary action, thereby improving the drainage performance of artificial turf. On the other hand, the microcapsule-HMC composite structure can act as a lubricating layer between polyethylene molecules and an interface reinforcement material between the artificial grass fiber matrix and the artificial grass fiber matrix, reducing the probability of polymer molecular interface debonding. The microcapsule-HMC composite structure exhibits a certain degree of viscoelasticity, which can effectively transfer mechanical and thermal stress to the core material of the microcapsules, further improving the elasticity and mechanical strength of the artificial grass fibers.
[0032] In terms of addressing high-temperature aging, firstly, the water stored in the microcapsule-hydroxypropyl methylcellulose composite structure has a high specific heat capacity, which can dissipate the latent heat of phase change; secondly, butyl stearate undergoes a reversible phase change near its melting temperature, which can convert the heat on the surface of artificial grass fibers into latent heat of phase change, thereby reducing the peak temperature of artificial grass fibers. Hydroxypropyl methylcellulose provides elastic support during the phase change process, limiting the stress generated by the volume expansion / contraction of butyl stearate. The two work together to prevent the microcapsule shell from cracking, maintain a relatively low temperature change in artificial grass fibers, and reduce the thermal oxidation rate and aging rate of artificial grass fibers.
[0033] This invention combines microcapsules, hydroxypropyl methylcellulose, and polyethylene to form a layered shell material in the form of microcapsules, using diisocyanate in the hard segment and triethylenetetramine and diethylenetriamine in the soft segment. On the one hand, this reduces the risk of plastic deformation of the polymer in artificial grass fibers, ensuring the low-temperature toughness and elasticity of the artificial grass fibers. On the other hand, the layered shell material, by combining with hydroxypropyl methylcellulose, can flexibly store strain energy, reducing the risk of low-temperature brittleness of the material. Detailed Implementation
[0034] The present invention will now be described and illustrated in detail with reference to the embodiments.
[0035] The raw materials used in the following examples and comparative examples are all commercially available products. The coloring masterbatch was provided by Shandong Haiman Topbond Chemical Technology Co., Ltd., the high-density polyethylene (HDPE) grade 6000F was provided by Qilu Petrochemical, and the linear low-density polyethylene (LDPE) grade DFDA-9906 was provided by Sinopec.
[0036] Example 1
[0037] At room temperature, 30 kg of butyl stearate, 12 kg of toluene-2,4-diisocyanate, and 300 g of erucamide were mixed and stirred until homogeneous to obtain the oil phase; at room temperature, 2.8 kg of hydroxypropyl methylcellulose, 380 g of sodium lauryl sulfate, and 10 kg of distilled water were mixed and stirred until the pH reached 7.8 to obtain the aqueous phase A; at room temperature, 1 kg of triethylenetetramine, 3 kg of diethylenetriamine, and 15 kg of distilled water were mixed to obtain the aqueous phase B.
[0038] Aqueous phase A was added to the oil phase while stirring at a rate of 1.3 kg / min and a stirring rate of 400 rpm. After the addition was complete, the mixture was stirred at 2500 rpm for 7 min. Stirring was then stopped. No obvious phase separation was observed when the mixture was allowed to stand, thus obtaining an emulsion.
[0039] Aqueous phase B was then added to the emulsion at a rate of 0.5 kg / min, and the reaction was stirred at 40 °C for 1.5 h. After the reaction was complete, the pH of the system was adjusted to neutral, and the solid phase was separated by centrifugation. The solid phase was washed with ethanol and water in sequence, and finally dried at 60 °C for 12 h to obtain the microcapsule complex.
[0040] 4 kg of high-density polyethylene, 10 kg of linear low-density polyethylene, 1200 g of coloring masterbatch, 600 g of microcapsule complex, 150 g of N,N-dihydroxyethyl octadecylamine, 160 g of antioxidant 1098, 70 g of UV-326, 400 g of dimethyl methylphosphonate, and 700 g of zinc stearate were added to a high-speed mixer and premixed for 15 min at 100 r / min and 105 °C. Then, the mixture was fed into an extruder and melt-extruded at 195 °C. The fibers were then drawn into filaments at a drawing temperature of 140 °C and a draw ratio of 3. The fibers were then set at 100 °C for 20 min and cooled to room temperature in a flowing air to obtain artificial grass fibers with a linear density of 7500 dtex.
[0041] Artificial grass fibers are twisted and then tufted into pre-made positions in the base fabric to form grass bundles. Hot melt adhesive is then coated onto the back of the grass bundles and cured by heating. The grass bundles are subsequently cut, rolled, and cleaned to produce a highly weather-resistant artificial turf. The artificial turf has a grass height of 50mm, a needle pitch of 5 / 8 inch, and a grass density of 11,000 tufts / m². 2 .
[0042] Example 2
[0043] At room temperature, 28 kg of butyl stearate, 16 kg of toluene-2,4-diisocyanate, and 250 g of erucamide were mixed and stirred until homogeneous to obtain the oil phase. At room temperature, 1.6 kg of hydroxypropyl methylcellulose, 520 g of disodium lauryl sulfosuccinate, and 15 kg of distilled water were mixed and stirred until the pH reached 8.0 to obtain the aqueous phase A. At room temperature, 1.8 kg of triethylenetetramine, 3 kg of diethylenetriamine, and 25 kg of distilled water were mixed to obtain the aqueous phase B.
[0044] Aqueous phase A was added to the oil phase while stirring at a rate of 0.9 kg / min and a stirring rate of 200 rpm. After the addition was complete, the mixture was stirred at 2300 rpm for 8 minutes. Stirring was then stopped. No obvious phase separation was observed when the mixture was allowed to stand, thus obtaining an emulsion.
[0045] Aqueous phase B was then added to the emulsion at a rate of 0.6 kg / min, and the reaction was stirred at 45 °C for 1 h. After the reaction was complete, the pH of the system was adjusted to neutral, and the solid phase was separated by centrifugation. The solid phase was washed with tetrahydrofuran and water in sequence, and finally dried at 50 °C for 14 h to obtain the microcapsule complex.
[0046] 3 kg of high-density polyethylene, 9.5 kg of linear low-density polyethylene, 800 g of coloring masterbatch, 720 g of microencapsulated complex, 110 g of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, 100 g of antioxidant 1076, 110 g of UV-531, 320 g of resorcinol bis(diphenyl phosphate), and 300 g of methyl silicone oil were added to a high-speed mixer and premixed for 8 min at 80 r / min and 120 °C. The mixture was then fed into an extruder and melt-extruded at 190 °C. The fibers were then drawn into filaments at a drawing temperature of 160 °C and a draw ratio of 4. The fibers were then set at 80 °C for 15 min and cooled to room temperature in a flowing air to obtain artificial grass fibers with a linear density of 7000 dtex.
[0047] Artificial grass fibers are twisted and then tufted into pre-made positions in the base fabric to form grass bundles. Hot melt adhesive is then coated onto the back of the grass bundles and cured by heating. The grass bundles are subsequently cut, rolled, and cleaned to produce a highly weather-resistant artificial turf. The artificial turf has a grass height of 42mm, a needle pitch of 5 / 8 inch, and a grass density of 10,500 tufts / m². 2 .
[0048] Example 3
[0049] At room temperature, 26 kg of butyl stearate, 14 kg of isophorone diisocyanate, and 350 g of erucamide were mixed and stirred until homogeneous to obtain the oil phase. At 10 °C, 2 kg of hydroxypropyl methylcellulose, 420 g of sodium dodecyl ether sulfate, and 12 kg of distilled water were mixed and stirred until the pH reached 8.2 to obtain the aqueous phase A. At room temperature, 1.3 kg of triethylenetetramine, 3 kg of diethylenetriamine, and 20 kg of distilled water were mixed to obtain the aqueous phase B.
[0050] Aqueous phase A was added to the oil phase while stirring at a rate of 1 kg / min and a stirring rate of 300 rpm. After the addition was complete, the mixture was stirred at 3000 rpm for 5 min. Stirring was then stopped. No obvious phase separation was observed when the mixture was allowed to stand, thus obtaining an emulsion.
[0051] Aqueous phase B was then added to the emulsion at a rate of 0.7 kg / min, and the reaction was stirred at 35 °C for 2 h. After the reaction was complete, the pH of the system was adjusted to neutral, and the solid phase was separated by centrifugation. The solid phase was washed with methanol and water in sequence, and finally dried at 40 °C for 16 h to obtain the microcapsule complex.
[0052] 5.5 kg of high-density polyethylene, 10.5 kg of linear low-density polyethylene, 950 g of coloring masterbatch, 850 g of microcapsule complex, 130 g of fatty acid diethanolamide, 80 g of antioxidant 168, 100 g of UV-1164, 580 g of triphenyl phosphate, and 500 g of polyethylene wax were added to a high-speed mixer and premixed for 10 min at 120 r / min and 90 °C. The mixture was then fed into an extruder and melt-extruded at 200 °C. The fibers were then drawn into filaments at a drawing temperature of 135 °C and a draw ratio of 2. The fibers were then set at 90 °C for 18 min and cooled to room temperature in a flowing air system to obtain artificial grass fibers with a linear density of 8000 dtex.
[0053] Artificial grass fibers are twisted and then tufted into pre-made positions in the base fabric to form grass bundles. Hot melt adhesive is then coated onto the back of the grass bundles and cured by heating. The grass bundles are subsequently cut, rolled, and washed to produce a highly weather-resistant artificial turf. The artificial turf has a grass height of 58 mm, a needle pitch of 5 / 8 inch, and a grass density of 11,500 tufts / m². 2 .
[0054] Comparative Example 1
[0055] Without adding diisocyanate and polyamine, the remaining steps are the same as in Example 1.
[0056] Comparative Example 2
[0057] Without adding erucamide, the remaining steps are the same as in Example 1.
[0058] Comparative Example 3
[0059] Without adding butyl stearate, the remaining steps are the same as in Example 1.
[0060] Comparative Example 4
[0061] Hydroxypropyl methylcellulose was not added, and the remaining steps were the same as in Example 1.
[0062] Comparative Example 5
[0063] Meanwhile, aqueous phases A and B are added to the oil phase. After one and two stirrings, an emulsion is obtained. After polymerization, the pH is adjusted to neutral. After post-treatment, the complex is obtained. The remaining steps are the same as in Example 1.
[0064] Implementation effect evaluation
[0065] Take artificial grass fibers from the examples and comparative examples and cut them into 100mm lengths; take high weather-resistant artificial turf from the examples and comparative examples and cut it into 15cm×15cm turf samples (including fibers, base fabric, and backing adhesive), keeping the fibers perpendicular to the direction of force; rinse the cut artificial grass fibers and turf samples with clean water for 6 hours, then place them in an environment with 80% RH and 46℃ for 12 hours, take them out and place them at room temperature for 1 hour, then place them in an environment with -15℃ for 48 hours, and take them out for use.
[0066] The strength properties of artificial grass monofilaments were tested using a universal testing machine. The tensile rate was set to 80 mm / min and the gauge length to 50 mm. The tensile strength and elongation at break of the monofilaments were measured. Each example and comparative example was sampled and measured three times, and the average value was taken.
[0067] The elastic properties of artificial turf were tested using a 5kg iron rod. Three groups of iron rods were dropped from heights of 40mm, 80mm, and 100mm. The drop frequency for each group was 38 drops / min, the measurement time was 120min, and the interval between measurements was 20min. After the experiment, a 30min recovery period was allowed, and the presence of observable cracks in the artificial turf was observed, and the permanent deformation rate was measured. The permanent deformation rate was defined as (L0-L1) / L0×100%, where L0 is the initial height of the artificial turf and L1 is the height of the artificial turf after the experiment.
[0068] The abrasion resistance of artificial turf was tested using a dual-head abrasion tester. A 500g weight was placed on each wheel, and the initial weight of the turf sample was recorded. The abrasion wheel was then brought into contact with the turf sample, with no gap between them. The machine was started and rotated 5800 times before being stopped. The surface of the turf sample was cleaned, and the weight of the turf sample was re-weighed. The abrasion rate was defined as (M0-M1) / M0×100%, where M0 is the initial weight of the turf sample and M1 is the weight of the turf sample after the test.
[0069] The relevant performance test data are shown in Table 1.
[0070] Table 1 Performance test data of artificial turf and artificial lawn
[0071]
Claims
1. A highly weather-resistant artificial turf, characterized in that, The product comprises the following components by weight: 125-160 parts of matrix resin, 8-12 parts of coloring masterbatch, 6-8.5 parts of microcapsule complex, 5.8-10 parts of functional additives, and 3-7 parts of lubricant; The matrix resin is composed of 30-55 parts of high-density polyethylene and 95-105 parts of linear low-density polyethylene; The preparation process of the microcapsule complex includes the following steps: S1. Mix the phase change material, diisocyanate and erucamide to obtain the oil phase; the phase change material is butyl stearate. S2. Mix hydroxypropyl methylcellulose, surfactant and water, adjust pH to obtain aqueous phase A; S3. Mix the polyamine and water to obtain aqueous phase B; S4. Add the aqueous phase A to the oil phase while stirring once, and then stir a second time after the addition is complete to obtain the emulsion. S5. Add aqueous phase B to the emulsion to carry out the reaction. After the reaction is complete, adjust the pH to neutral and perform post-processing to obtain the microcapsule complex.
2. The high weather-resistant artificial turf according to claim 1, characterized in that, Functional additives include antistatic agents, antioxidants, light stabilizers and flame retardants, wherein the antistatic agent is 1.1 to 1.5 parts, the antioxidant is 0.8 to 1.6 parts, the light stabilizer is 0.7 to 1.1 parts and the flame retardant is 3.2 to 5.8 parts.
3. The high weather-resistant artificial turf according to claim 2, characterized in that, The antistatic agent is one of fatty acid diethanolamide, N,N-dihydroxyethyl octadecylamine or octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate; the antioxidant is one of antioxidant 1076, antioxidant 1098 or antioxidant 168; the light stabilizer is one of UV-326, UV-531 or UV-1164; the flame retardant is one of triphenyl phosphate, dimethyl methylphosphonate or resorcinol bis(diphenyl phosphate); and the lubricant is one of polyethylene wax, methyl silicone oil or zinc stearate.
4. The high weather-resistant artificial turf according to claim 1, characterized in that, In S1, the diisocyanate is isophorone diisocyanate or toluene-2,4-diisocyanate, and the mass ratio of phase change material, diisocyanate and erucamide is (26~30):(12~16):(0.25~0.35).
5. The high weather-resistant artificial turf according to claim 1, characterized in that, In S2, the surfactant is one of sodium dodecyl ether sulfate, disodium lauryl sulfosuccinate, or sodium lauryl sulfate. The mass ratio of hydroxypropyl methylcellulose, water, and surfactant is (1.6~2.8):(10~15):(0.38~0.52). The pH is adjusted to 7.8~8.
2.
6. The high weather-resistant artificial turf according to claim 1, characterized in that, In S3, the polyamines include triethylenetetramine and diethylenetriamine, and the mass ratio of triethylenetetramine, diethylenetriamine and water is (1~1.8):3:(15~25).
7. The high weather-resistant artificial turf according to claim 1, characterized in that, In S4, the addition rate is 0.9~1.3 kg / min, the first stirring rate is 200~400 rpm, the second stirring rate is 2300~3000 rpm, and the second stirring time is 5~8 min.
8. The high weather-resistant artificial turf according to claim 1, characterized in that, In S5, the addition rate is 0.5~0.7 kg / min, the reaction temperature is 35~45℃, and the reaction time is 1~2 h.
9. A method for preparing a high weather-resistant artificial turf according to any one of claims 1-8, characterized in that, Includes the following steps: (1) The matrix resin, coloring masterbatch, microcapsule complex, functional additives and lubricant are premixed, and then melt extruded, drawn and shaped to obtain artificial grass fibers; (2) The artificial grass fibers are embedded in the base fabric, coated with adhesive, cut and rolled to obtain a high weather-resistant artificial turf.
10. The method for preparing high weather-resistant artificial turf according to claim 9, characterized in that, In step (1), the premixing rate is 80~120 r / min, the premixing temperature is 90~120℃, the premixing time is 8~15 min, the melt extrusion temperature is 190~200℃, the drawing temperature is 135~160℃, the drawing ratio is 2~4, and the linear density of the artificial grass fiber is 7000~8000 dtex.