A self-lubricating and self-cleaning artificial ski grass and a method for manufacturing the same

Abstract

The present application relates to the technical field of artificial turf, in particular to a self-lubricating and self-cleaning ski artificial turf and a preparation method thereof, which is used to solve the problem that the existing ski artificial turf does not have self-lubricating and self-cleaning functions; the preparation method takes modified nylon 6 as a main raw material; the modified nylon 6 has high toughness, good heat resistance, low friction coefficient and excellent self-lubricating performance; the polytetrafluoroethylene fiber D30 synergistic reinforcing material has high temperature resistance, corrosion resistance and self-lubricating performance; the addition of the modified hydrophobic film and the modified silicone resin coating can significantly improve the self-cleaning ability of the material, so that the prepared ski artificial turf has self-lubricating performance, reduces the frictional resistance during exercise, improves the smoothness of sliding, reduces the equipment loss, and at the same time has self-cleaning ability, so as to ensure that the lawn surface is not easy to accumulate dust and be contaminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial turf, in particular to a self-lubricating and self-cleaning ski artificial turf and a preparation method thereof. BACKGROUND

[0002] Artificial turf is a rapidly developed turf industry in recent decades, which is a simulated lawn made of plastic chemical fibers as raw materials. It has some functions of natural turf, and is widely accepted by people due to its good wear resistance, uniformity and low maintenance management requirements. In recent years, artificial turf has been significantly improved in stability, turf maintenance, sliding resistance and appearance color, and is increasingly close to natural turf, and is more and more applied in international competition venues.

[0003] However, in the field of skiing, there is little research on ski artificial turf. The ski artificial turf on the market does not have the functions of self-lubrication and self-cleaning, and has the problems of large friction resistance and dirt accumulation during use.

[0004] Therefore, it is of great significance to develop a self-lubricating and self-cleaning ski artificial turf and a preparation method thereof for the existing ski artificial turf. SUMMARY

[0005] In order to overcome the above technical problems, the purpose of the present application is to provide a self-lubricating and self-cleaning ski artificial turf and a preparation method thereof. The modified nylon 6, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3 and titanium dioxide THR-218 are mixed, flow casted into a film, then hot-pressed with a modified hydrophobic film, and then molded to obtain a self-lubricating and self-cleaning ski artificial turf, solving the problem of large friction resistance and dirt accumulation caused by the lack of self-lubrication and self-cleaning function of the existing ski artificial turf.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A self-lubricating and self-cleaning ski artificial turf comprises the following components by weight:

[0008] 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3 and 1 part of titanium dioxide THR-218;

[0009] The modified nylon 6 is prepared by the following steps:

[0010] Step a1: anhydrous ethanol, ammonia water were added into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirred at a rotating speed of 500 r / min for 20 min, then tetraethyl orthosilicate was added, and the reaction was magnetically stirred for 2-4 h, after the reaction was completed, centrifugation was performed, the filter cake was washed with deionized water for 3-4 times, and then dispersed in an ultrasonic oscillator, then methyl hydrogen silicone oil and a catalyst were added, and magnetically stirred at 25℃ for 2-8 h, then filtration was performed, the filter cake was washed with ethanol for 3-4 times, and dried at a temperature of 50-55℃ for 2-3 h, to obtain modified nano-silica particles;

[0011] Step a2: polysulfone and dichloromethane were added into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirred for 2-4 h to obtain a continuous phase A, then modified nano-silica particles, lubricating oil, sodium lignosulfonate and deionized water were put into a beaker, the beaker was put into a water bath, and mechanical stirring was performed for 10 min, then emulsification was performed under the condition of a rotating speed of 500 r / min, to obtain a dispersed phase B, then the continuous phase A was added into the dispersed phase B under the condition of a constant mechanical stirring speed of the dispersed phase B of 360 r / min and a constant water bath temperature of 30℃, after all the continuous phase A was added, stirring and water bath were continuously performed for 5 h, then filtration was performed, and the filter cake was washed with distilled water, ethanol and acetone for 2-3 times respectively, and then dried to obtain modified microcapsules;

[0012] Step a3: the modified microcapsules were poured into anhydrous ethanol and ultrasonically dispersed for 30 min, then nylon 6 powder was added and uniformly mixed under ultrasonic stirring for 60 min, then filtration was performed, and the filter cake was placed in a vacuum drying oven and dried at 80℃ for 4-5 h to remove water, then the filter cake was added into a mold, and the mold was placed into a hot press molding machine and molded at 230℃ and a pressure of 10 MPa for 20 min, and then cooled to 25℃ to obtain modified nylon 6.

[0013] As a further scheme of the application: the amount ratio of the anhydrous ethanol, ammonia water, tetraethyl orthosilicate, methyl hydrogen silicone oil and catalyst in step a1 is 80-100 mL: 12-15 mL: 20-22 mL: 3-5 g: 0.1-0.5 g; the mass fraction of the ammonia water is 28%; the catalyst is dibutyltin dilaurate; and the model of the methyl hydrogen silicone oil is DY-H202.

[0014] As a further scheme of the application: the amount ratio of the polysulfone, dichloromethane, modified nano-silica particles, lubricating oil, sodium lignosulfonate and deionized water in step a2 is 2 g: 30 mL: 0.04-0.14 g: 4 g: 5 g: 100 mL; the model of the sodium lignosulfonate is sulfonated MN-3A; the polysulfone is polysulfone P-1700NT11; and the lubricating oil is lubricating oil 70SN.

[0015] As a further scheme of the present application: the use amount ratio of the modified microcapsule, anhydrous ethanol and nylon 6 powder in step a3 is 1g:10mL:9g; the type of the nylon 6 is CM1011G15.

[0016] As a further scheme of the present application: the modified hydrophobic film is prepared by the following steps:

[0017] Step b1: aluminum isopropoxide and 1 / 2 deionized water are added into a flask, after stirring at 85℃ for 1-2h, nitric acid solution is added and stirred for 1-2h, and then aged for 12h, the remaining 1 / 2 deionized water and polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer are added and stirred for 30min to obtain a sol, the glass is immersed in an ethanol solution, and then placed in an ultraviolet ozone cleaning machine for activation, ultraviolet irradiation is performed for 1h, the above-mentioned sol is spread on the activated glass, and the spin coating parameters are set as: slow speed 800r / min, time 10s, acceleration 300r / s; fast speed 2500r / min, time 20s, acceleration 400r / s, and the glass after spin coating is placed on a hot plate and heated at 100℃ for 30min to obtain a modified boehmite film;

[0018] Step b2: the modified boehmite film is placed in a muffle furnace and kept at 400℃ for 2h, the modified boehmite film is immersed in hot water with a temperature of 60-90℃ for 10-60min, and then washed with deionized water and ethanol for 2-3 times, the modified boehmite film is dried at 50-55℃, tetraethyl orthosilicate is added into 2 / 5 methanol as A liquid, ammonia is added into the remaining 3 / 5 methanol as B liquid, and ultrasonic dispersion is performed for 30min, A and B liquids are mixed and ultrasonic dispersed for 30min, and then aged for 10h, and hexamethyldisilazane is added and hydrothermal treated at 80℃ for 6h to obtain a transparent hydrophobic sol, the transparent hydrophobic sol is spin coated on the modified boehmite film to obtain a modified hydrophobic film.

[0019] As a further scheme of the present application: the use amount ratio of the aluminum isopropoxide, deionized water, nitric acid solution and polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer in step b1 is 11.33g:150mL:4.44mL:3g; the type of the polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer is PN04505; and the molar fraction of the nitric acid solution is 5mol / L.

[0020] As a further scheme of the present application: the use amount ratio of the modified boehmite film, tetraethyl orthosilicate, methanol, ammonia and hexamethyldisilazane in step b2 is 10-15g:1mL:25mL:1.5mL:4mL; and the mass fraction of the ammonia is 28%.

[0021] As a further scheme of the present application: the modified silicone resin coating is prepared by the following steps:

[0022] Step c1: tetraethyl orthosilicate, carbon microspheres, anhydrous ethanol and deionized water are added to a three-necked flask equipped with a stirrer, a thermometer, a gas inlet tube and a reflux condenser, the three-necked flask is placed in a constant temperature water bath at 40℃ and stirred for 24h, after the reaction is completed, filtration is performed, and the product is washed with ethanol and deionized water for 1-3 times, then the product is dried and ground in an oven at 60℃, the ground product is placed in a porcelain boat and put into a muffle furnace, the heating rate is set to 3℃ / min, heated to 550℃ and kept for 3-4h, and after cooling to 25℃, modified silica microspheres are obtained;

[0023] Step c2: the cotton fibers are immersed in the titanium tetrachloride solution for 3-4 times and dried, the dried cotton fibers are placed in a porcelain boat and put into a tube furnace, calcined at 600℃ for 2h under nitrogen protection, cooled to 25℃ to obtain titanium dioxide coated carbon microtubes, the modified silica microspheres, titanium dioxide coated carbon microtubes and dodecylamine are added to the tris(hydroxymethyl) aminomethane, stirred for 15min to disperse, dopamine is added, stirred at 25℃ for 24h, washed by centrifugation with ethanol, dried at 60℃, then mixed with silicone resin in ethanol, ultrasonic dispersion for 10min, and cured in an oven at 120℃ for 2h to obtain a modified silicone resin coating.

[0024] As a further scheme of the present application: the amount ratio of the tetraethyl orthosilicate, carbon microspheres, anhydrous ethanol and deionized water in step c1 is 1-3g: 1g: 20mL: 40mL; the carbon microspheres are disordered mesoporous microspheres TOB-HPC.

[0025] As a further scheme of the present application: the amount ratio of the cotton fibers, tris(hydroxymethyl) aminomethane, modified silica microspheres, dodecylamine, dopamine, silicone resin and ethanol in step c2 is 5g: 60mL: 100mg: 0.4g: 0.2g: 1.7g: 20mL; the molar concentration of the titanium tetrachloride solution is 0.5mol / L; the silicone resin is silicone resin SI-MQ204.

[0026] As a further scheme of the present application: a preparation method of a ski artificial turf with self-lubricating and self-cleaning, comprising the following steps:

[0027] Step one: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3 and 1 part of titanium dioxide THR-218 are weighed according to weight parts;

[0028] Step two: mix modified nylon 6, polytetrafluoroethylene fiber D30, modified hydrophobic film, modified silicone coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, titanium dioxide THR-218, and then cast into a film by a casting extruder at 100-200 DEG C, then hot-press composite with modified hydrophobic film, and then mold into a shape to obtain a self-lubricating and self-cleaning artificial ski grass.

[0029] The beneficial effects of the present application are:

[0030] The present application is a self-lubricating and self-cleaning artificial ski grass and a preparation method thereof, which comprises mixing modified nylon 6, polytetrafluoroethylene fiber D30, modified hydrophobic film, modified silicone coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, and titanium dioxide THR-218, and then melt-extruding in an extruder and mold into a shape to obtain a self-lubricating and self-cleaning artificial ski grass; the preparation method uses modified nylon 6 as the main raw material, which has excellent comprehensive performance, such as high strength, high toughness, good heat resistance, low friction coefficient, and excellent self-lubricating performance; by adding polytetrafluoroethylene fiber D30, the high-temperature resistance, corrosion resistance, and self-lubricating performance of the modified nylon 6 can be synergistically enhanced; by adding modified hydrophobic film and modified silicone coating, the self-cleaning ability of the material can be significantly improved; active calcium carbonate can improve the physical properties and increase the rigidity of the material; magnesium stearate can help reduce friction during processing and use; antioxidant 1010 can improve the weather resistance of the material, prevent oxidative degradation, and maintain long-term stability; antistatic agent JL-AS-3 can reduce the accumulation of surface static electricity, prevent dust adsorption, and indirectly assist self-cleaning.

[0031] In the process of preparing the self-lubricating and self-cleaning ski artificial turf, a modified nylon 6 is first prepared, nano-silica particles are obtained by mixing, stirring anhydrous ethanol, ammonia and tetraethyl orthosilicate, methyl hydrogen silicone oil and a catalyst are added and stirred for reaction, and the modified nano-silica particles are obtained by washing and drying; the modified microcapsules are obtained by mixing, water-bathing, filtering, washing, filtering and drying polysulfone, dichloromethane, the modified nano-silica particles, lubricating oil, sodium lignosulfonate and deionized water; the modified nylon 6 is obtained by mixing, stirring, suction-filtering, drying and hot-pressing the modified microcapsules, anhydrous ethanol and nylon 6 powder, and cooling; the surface of the nano-silica has a large number of silicon hydroxyl groups and unsaturated covalent bonds, which can form a chemical adsorption film to protect the wear surface when rubbing, so that the lubricating property of the lubricating oil is obviously improved; the methyl hydrogen silicone oil is grafted on the surface by surface modification, the cross-linked nano-silica particles form a micron-level structure, and together with the un-cross-linked particles, they form a micro-nano structure, and together with the large number of hydrophobic groups-methyl on the surface of the methyl hydrogen silicone oil, the modified nylon 6 has super-hydrophobic property; when the microcapsules on the surface of the modified nylon 6 are damaged, the modified nano-silica flows out and forms a lubricating film with the lubricating oil on the wear surface, the modified nano-silica has good heat conduction efficiency, can reduce the friction and wear caused by thermal deformation, can gather in the wear mark to prevent crack propagation, can improve the wear resistance and friction reduction property of the composite material, and can provide self-lubricating property.

[0032] In the process of preparing the self-lubricating and self-cleaning ski artificial turf, a modified hydrophobic film is first prepared, the modified boehmite film is obtained by mixing, stirring aluminum isopropoxide, deionized water and polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer, spin coating and drying on activated glass, then the modified hydrophobic film is obtained by spin coating the transparent hydrophobic sol prepared by hydrothermal synthesis of tetraethyl orthosilicate, methanol, ammonia and hexamethyldisilazane on the modified boehmite film; the aluminum isopropoxide has the property of easy moisture absorption, the pore-forming agent of the polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer is added to make pores, increase the roughness of the material surface, and enhance the durability, prevent repeated scratching and humid environment; the hydrolysis of tetraethyl orthosilicate provides silicon hydroxyl groups, and the condensation grafting of hexamethyldisilazane provides trimethylsilyl groups; the catalytic polycondensation of tetraethyl orthosilicate and ammonia makes ionic cross-linking, the transparent hydrophobic sol prepared by the two has super-hydrophobic property, and the modified hydrophobic film prepared by spin coating on the modified boehmite film has super-high stability, and has high wear resistance, water resistance, stain resistance and self-cleaning function.

[0033] In the process of preparing the ski artificial turf with self-lubricating and self-cleaning, a modified silica resin coating is first prepared, modified silica microspheres are obtained by mixing, stirring, drying and grinding of tetraethyl orthosilicate, carbon microspheres and anhydrous ethanol; the cotton fibers are dipped in a titanium tetrachloride solution and dried, and the titanium dioxide coated carbon microtubes are obtained by calcination; the modified silica microspheres, titanium dioxide coated carbon microtubes and dodecylamine are added to the tris(hydroxymethyl) aminomethane, and the dopamine is stirred and added; then, the mixture is washed, dried, mixed with the silica resin in ethanol, ultrasonically dispersed and solidified to obtain the modified silica resin coating; the modified silica microspheres and the titanium dioxide coated carbon microtubes construct a double-stage hydrophobic structure, which improves the surface roughness of the coating and achieves better anti-icing, de-icing and self-cleaning functions; the modified silica microspheres increase the channels for water vapor molecules to pass through the coating, improve the breathability of the coating, and at the same time, enhance the corrosion resistance of the coating and prolong the service life of the coating; the hydroxyl radicals generated by the light excitation of the titanium dioxide can oxidize the adsorbed pollutants at the active sites and catalytically degrade the pollutants through the redox reaction; the micro-nano structure of the coating and the long-chain alkyl of the low surface energy provide excellent self-cleaning performance, which can remove the dust particles and other pollutants on the surface of the coating during the rolling of the water droplets, and also can remove the pollutants through the surface photocatalytic self-cleaning. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Embodiment 1

[0036] The present embodiment is a preparation method of a ski artificial turf with self-lubricating and self-cleaning, which comprises the following steps:

[0037] Step S1: 80 mL of anhydrous ethanol and 12 mL of ammonia water with a mass fraction of 28% are added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirred at a speed of 500 r / min for 20 min; 20 mL of tetraethyl orthosilicate is added, and magnetically stirred for 2 h; after the reaction is completed, centrifugation is performed, the filter cake is washed with deionized water for 3 times, and dispersed in an ultrasonic oscillator; then, 3 g of methyl hydrogen silicone oil DY-H202 and 0.1 g of dibutyltin dilaurate are added, and magnetically stirred at 25℃ for 2 h; the filter cake is washed with ethanol for 3 times, and dried at a temperature of 50℃ for 2 h to obtain modified nano-silica particles;

[0038] Step S2: 2 g of polysulfone P-1700NT11 and 30 mL of dichloromethane were added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet tube, and magnetic stirring was performed for 2 h to obtain a continuous phase A. 0.04 g of modified nano-silica particles, 4 g of lubricating oil 70SN, 5 g of sulfonated MN-3A and 100 mL of deionized water were placed in a beaker, the beaker was placed in a water bath, and mechanical stirring was performed for 10 min. The mixture was fully emulsified at a speed of 500 r / min, and a dispersion phase B was obtained. The mechanical stirring speed of the dispersion phase B was kept at 360 r / min, and the water bath temperature was kept at 30℃. The continuous phase A was added to the dispersion phase B, and after all the continuous phase A was added, stirring and water bath were continued for 5 h. Filtration, washing with distilled water, ethanol and acetone twice, filtration and drying were performed to obtain modified microcapsules;

[0039] Step S3: 1 g of modified microcapsules was ultrasonically dispersed in 10 mL of anhydrous ethanol for 30 min, 9 g of nylon 6 CM1011G15 was added and uniformly mixed under ultrasonic stirring for 60 min. Filtration, placement in a vacuum drying oven at 80℃ for 4 h to remove water, addition to a mold, and placement of the mold in a hot press molding machine at 230℃ and 10 MPa pressure for 20 min to obtain modified nylon 6 after cooling to 25℃;

[0040] Step S4: 11.33 g of aluminum isopropoxide and 75 mL of deionized water were added to a flask, stirred at 85℃ for 1 h, and then 4.44 mL of a 5 mol / L molar fraction nitric acid solution was added and stirred for 1 h. After standing for 12 h, 75 mL of deionized water and 3 g of polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer PN04505 were added and stirred for 30 min to obtain a sol. The glass was immersed in an ethanol solution and then placed in a UV ozone cleaning machine for activation. UV irradiation was performed for 1 h. The modified boehmite film was obtained by spreading the above sol on the activated glass, setting the spin coating parameters as follows: slow speed 800 r / min, time 10 s, acceleration 300 r / s; fast speed 2500 r / min, time 20 s, acceleration 400 r / s. The glass after spin coating was placed on a hot plate and heated at 100℃ for 30 min to obtain a modified boehmite film;

[0041] Step S5: 10 g of modified boehmite film was placed in a muffle furnace and kept at 400℃ for 2 h, and then immersed in hot water at 60℃ for 10 min. After hot water immersion, the modified boehmite film was washed twice with deionized water and ethanol, and then dried at 50℃. 1 mL of tetraethyl orthosilicate was added to 10 mL of methanol to prepare solution A, and 1.5 mL of 28% ammonia water was added to 15 mL of methanol to prepare solution B. The two solutions were ultrasonically dispersed for 30 min, and then mixed and ultrasonically dispersed for 30 min. After standing for 10 h, 4 mL of hexamethyldisilazane was added and hydrothermally treated at 80℃ for 6 h to obtain a transparent hydrophobic sol. The transparent hydrophobic sol was spin-coated on the modified boehmite film to obtain a modified hydrophobic film;

[0042] Step S6: 1 g of tetraethyl orthosilicate, 1 g of disordered mesoporous microspheres TOB-HPC, 20 mL of anhydrous ethanol, and 40 mL of deionized water were added to a three-neck flask equipped with a stirrer, thermometer, gas inlet tube, and reflux condenser. The three-neck flask was placed in a constant temperature water bath at 40℃ and stirred for 24 h. After the reaction was completed, the product was filtered, washed once with ethanol and deionized water, and then dried in an oven at 60℃. The dried product was ground and spread on a porcelain boat in a muffle furnace. The heating rate was set to 3℃ / min, and the temperature was raised to 550℃ and kept for 3 h. After cooling to 25℃, modified silica microspheres were obtained;

[0043] Step S7: 5 g of cotton fibers were immersed in a 0.5 mol / L titanium tetrachloride solution for 3 times and dried. The dried cotton fibers were placed in a porcelain boat and put into a tube furnace. Under nitrogen protection, they were calcined at 600℃ for 2 h, and then cooled to 25℃ to obtain titanium dioxide-coated carbon microtubes. 100 mg of modified silica microspheres, titanium dioxide-coated carbon microtubes, and 0.4 g of dodecylamine were added to 60 mL of tris(hydroxymethyl)aminomethane. After stirring for 15 min, 0.2 g of dopamine was added and stirred at 25℃ for 24 h. The product was washed by centrifugation with ethanol and dried at 60℃. Then, 1.7 g of silicone resin SI-MQ204 was mixed in 20 mL of ethanol, ultrasonically dispersed for 10 min, and cured in an oven at 120℃ for 2 h to obtain a modified silicone resin coating;

[0044] Step S8: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, and 1 part of titanium white powder THR-218 were weighed according to the weight parts;

[0045] Step S9: mixing modified nylon 6, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, titanium white powder THR-218, and then film casting by a casting extruder at 100-200℃, and then hot-pressing with a modified hydrophobic film, and then molding to obtain a self-lubricating and self-cleaning artificial ski grass.

[0046] Example 2:

[0047] The present embodiment is a method for preparing a self-lubricating and self-cleaning artificial ski grass, comprising the following steps:

[0048] Step S1: adding 90mL of anhydrous ethanol and 14mL of 28% ammonia water into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirring at a speed of 500r / min for 20min, then adding 21mL of tetraethyl orthosilicate, and magnetically stirring for 3h, and then centrifuging after the reaction, and washing the filter cake with deionized water for 3-4 times, and dispersing in an ultrasonic oscillator, and then adding 4g of methyl hydrogen-containing silicone oil DY-H202 and 0.3g of dibutyltin dilaurate, and magnetically stirring at 25℃ for 5h, and then suction filtering, and washing the filter cake with ethanol for 4 times, and drying at a temperature of 53℃ for 2.5h to obtain modified nano-silica particles;

[0049] Step S2: adding 2g of polysulfone P-1700NT11 and 30mL of dichloromethane into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirring for 3h to obtain a continuous phase A, and then adding 0.09g of modified nano-silica particles, 4g of lubricating oil 70SN and 5g of sulfonated MN-3A into a beaker, and placing the beaker in a water bath, and mechanically stirring for 10min, and then fully emulsifying under the condition of a stirring speed of 500r / min to obtain a dispersed phase B, and then keeping the mechanical stirring speed of the dispersed phase B at 360r / min and the water bath temperature at 30℃, and then adding the continuous phase A into the dispersed phase B, and continuously stirring and water-bathing for 5h after all the continuous phase A is added, and then filtering, and washing with distilled water, ethanol and acetone for 3 times respectively, and then filtering and drying to obtain modified microcapsules;

[0050] Step S3: ultrasonic dispersing 1g of modified microcapsules in 10mL of anhydrous ethanol for 30min, and then adding 9g of nylon 6 CM1011G15 and uniformly mixing under ultrasonic stirring for 60min, and then suction filtering, and then placing in a vacuum drying oven for drying at 80℃ for 5h to remove the water therein, and then adding into a mold, and then placing the mold into a hot-pressing molding machine, and then molding at 230℃ and a pressure of 10MPa for 20min, and then cooling to 25℃ to obtain modified nylon 6;

[0051] Step S4: 11.33 g of aluminum isopropoxide and 75 mL of deionized water were added to a flask, stirred at 85°C for 1 h, then 4.44 mL of a 5 mol / L molar fraction nitric acid solution was added and stirred for 1-2 h, aged for 12 h, 75 mL of deionized water and 3 g of polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer PN04505 were added and stirred for 30 min to obtain a sol, the glass was immersed in an ethanol solution and then placed in an ultraviolet ozone cleaning machine for activation, ultraviolet irradiation was performed for 1 h, the above sol was spread on the activated glass, and the spin coating parameters were set as follows: slow speed 800 r / min, time 10 s, acceleration 300 r / s; fast speed 2500 r / min, time 20 s, acceleration 400 r / s, the glass after spin coating was placed on a hot plate and heated at 100°C for 30 min to obtain a modified boehmite film;

[0052] Step S5: 13 g of the modified boehmite film was placed in a muffle furnace and heated at 400°C for 2 h, then the modified boehmite film was immersed in hot water at 75°C for 35 min, and then washed with deionized water and ethanol for 3 times, and the modified boehmite film was dried at 53°C; 1 mL of tetraethyl orthosilicate was added to 10 mL of methanol to obtain A liquid, 1.5 mL of 28% ammonia water was added to 15 mL of methanol to obtain B liquid, and ultrasonic dispersion was performed for 30 min; A and B liquids were mixed and ultrasonic dispersed for 30 min, and then aged for 10 h; 4 mL of hexamethyldisilazane was added and hydrothermally treated at 80°C for 6 h to obtain a transparent hydrophobic sol; the transparent hydrophobic sol was spin-coated on the modified boehmite film to obtain a modified hydrophobic film;

[0053] Step S6: 2 g of tetraethyl orthosilicate, 1 g of disordered mesoporous microspheres TOB-HPC, 20 mL of anhydrous ethanol, and 40 mL of deionized water were added to a three-neck flask equipped with a stirrer, a thermometer, a gas inlet tube, and a reflux condenser, the three-neck flask was placed in a constant temperature water bath at 40°C and stirred for 24 h, after the reaction was completed, filtration was performed, and then the product was washed with ethanol and deionized water for 2 times respectively, and then the product was dried in an oven at 60°C and ground, the ground product was placed in a porcelain boat and placed in a muffle furnace, the heating rate was set to 3°C / min, heated to 550°C and kept for 4 h, and then cooled to 25°C to obtain modified silica microspheres;

[0054] Step S7: 5 g of cotton fibers were immersed in a titanium tetrachloride solution with a molar concentration of 0.5 mol / L for 4 times and dried, and the dried cotton fibers were placed in a porcelain boat and put into a tube furnace, calcined at 600 DEG C for 2 h under nitrogen protection, and cooled to 25 DEG C to obtain titanium dioxide coated carbon microtubes, 100 mg of modified silica microspheres, titanium dioxide coated carbon microtubes and 0.4 g of dodecylamine were added to 60 mL of tris-hydroxymethyl aminomethane, stirred for 15 min to disperse, 0.2 g of dopamine was added, stirred at 25 DEG C for 24 h, washed by centrifugation with ethanol, dried at 60 DEG C, then mixed with 1.7 g of silicone resin SI-MQ204 in 20 mL of ethanol, ultrasonic dispersion for 10 min, and cured in an oven at 120 DEG C for 2 h to obtain a modified silicone resin coating;

[0055] Step S8: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, and 1 part of titanium white powder THR-218 were weighed according to weight parts;

[0056] Step S9: The modified nylon 6, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, and titanium white powder THR-218 were mixed, and then cast into a film by a cast extruder at 100-200 DEG C, and then hot-pressed with the modified hydrophobic film to form a composite, and then molded to obtain a self-lubricating and self-cleaning ski artificial turf.

[0057] Example 3:

[0058] The present embodiment is a preparation method of a self-lubricating and self-cleaning ski artificial turf, comprising the following steps:

[0059] Step S1: 100 mL of anhydrous ethanol and 15 mL of ammonia water with a mass fraction of 28% were added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet tube, and magnetically stirred at a speed of 500 r / min for 20 min, 22 mL of tetraethyl orthosilicate was added, and magnetically stirred for 4 h, after the reaction was completed, centrifuged, the filter cake was washed with deionized water for 4 times, and then dispersed in an ultrasonic oscillator, then 5 g of methyl hydrogen-containing silicone oil DY-H202 and 0.5 g of dibutyltin dilaurate were added, and magnetically stirred at 25 DEG C for 8 h, filtered, the filter cake was washed with ethanol for 4 times, and dried at a temperature of 55 DEG C for 3 h to obtain modified nano-silica particles;

[0060] Step S2: 2 g of polysulfone P-1700NT11 and 30 mL of dichloromethane were added into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet tube, and magnetic stirring was performed for 4 h to obtain a continuous phase A. 0.14 g of modified nano-silica particles, 4 g of lubricating oil 70SN, 5 g of sulfonated MN-3A and 100 mL of deionized water were placed in a beaker, the beaker was placed in a water bath, and mechanical stirring was performed for 10 min. The mixture was fully emulsified at a speed of 500 r / min, and a dispersion phase B was obtained. The mechanical stirring speed of the dispersion phase B was kept at 360 r / min, and the water bath temperature was kept at 30℃. The continuous phase A was added to the dispersion phase B, and after all the continuous phase A was added, stirring and water bath were continued for 5 h. Filtration, washing with distilled water, ethanol and acetone for 3 times, filtration and drying were performed to obtain modified microcapsules;

[0061] Step S3: 1 g of modified microcapsules was ultrasonically dispersed in 10 mL of anhydrous ethanol for 30 min, 9 g of nylon 6 CM1011G15 was added and uniformly mixed under ultrasonic stirring for 60 min. Filtration, placement in a vacuum drying oven at 80℃ for 5 h to remove water, addition to a mold, and placement of the mold into a hot press molding machine at 230℃ and 10 MPa pressure for 20 min to obtain modified nylon 6 after cooling to 25℃;

[0062] Step S4: 11.33 g of aluminum isopropoxide and 75 mL of deionized water were added into a flask, stirred at 85℃ for 2 h, and then 4.44 mL of a 5 mol / L molar fraction nitric acid solution was added and stirred for 2 h. The mixture was left to stand for 12 h, 75 mL of deionized water and 3 g of polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer PN04505 were added and stirred for 30 min to obtain a sol. The glass was immersed in an ethanol solution and then placed in a UV ozone cleaning machine for activation. UV irradiation was performed for 1 h. The sol was spread on the activated glass, and the spin coating parameters were set as follows: slow speed 800 r / min, time 10 s, acceleration 300 r / s; fast speed 2500 r / min, time 20 s, acceleration 400 r / s. The glass after spin coating was placed on a hot plate and heated at 100℃ for 30 min to obtain a modified boehmite film;

[0063] Step S5: 15 g of modified boehmite film was placed in a muffle furnace and kept at 400℃ for 2 h, and then immersed in hot water at 90℃ for 60 min. After hot water immersion, the modified boehmite film was washed with deionized water and ethanol for 3 times, and then dried at 55℃. 1 mL of tetraethyl orthosilicate was added to 10 mL of methanol to prepare solution A, and 1.5 mL of 28% ammonia water was added to 15 mL of methanol to prepare solution B. The two solutions were ultrasonically dispersed for 30 min, and then mixed and ultrasonically dispersed for 30 min. After standing for 10 h, 4 mL of hexamethyldisilazane was added and hydrothermally treated at 80℃ for 6 h to obtain a transparent hydrophobic sol. The transparent hydrophobic sol was spin-coated on the modified boehmite film to obtain a modified hydrophobic film.

[0064] Step S6: 3 g of tetraethyl orthosilicate, 1 g of disordered mesoporous microspheres TOB-HPC, 20 mL of anhydrous ethanol, and 40 mL of deionized water were added to a three-neck flask equipped with a stirrer, thermometer, gas inlet tube, and reflux condenser. The three-neck flask was placed in a constant temperature water bath at 40℃ and stirred for 24 h. After the reaction was completed, the product was filtered, washed with ethanol and deionized water for 3 times, and then dried in an oven at 60℃. The dried product was ground and placed in a porcelain boat in a muffle furnace. The heating rate was set to 3℃ / min, and the temperature was raised to 550℃ and kept for 4 h. After cooling to 25℃, modified silica microspheres were obtained.

[0065] Step S7: 5 g of cotton fibers were immersed in a 0.5 mol / L titanium tetrachloride solution for 4 times and dried. The dried cotton fibers were placed in a porcelain boat and put into a tube furnace. Under nitrogen protection, they were calcined at 600℃ for 2 h, and then cooled to 25℃ to obtain titanium dioxide coated carbon microtubes. 100 mg of modified silica microspheres, titanium dioxide coated carbon microtubes, and 0.4 g of dodecylamine were added to 60 mL of trimethylolamine. After stirring for 15 min, 0.2 g of dopamine was added and stirred at 25℃ for 24 h. The product was washed by centrifugation with ethanol and dried at 60℃. Then, 1.7 g of silicon resin SI-MQ204 was mixed in 20 mL of ethanol, ultrasonically dispersed for 10 min, and cured in an oven at 120℃ for 2 h to obtain a modified silicon resin coating.

[0066] Step S8: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicon resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, and 1 part of titanium white THR-218 were weighed according to the weight parts.

[0067] Step S9: mixing modified nylon 6, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, titanium white powder THR-218, and then casting into a film by a casting extruder at 100-200℃, and then hot-pressing with a modified hydrophobic film, and then molding to obtain a self-lubricating and self-cleaning artificial ski grass.

[0068] Comparative Example 1

[0069] The present comparative example is a preparation method of a self-lubricating and self-cleaning artificial ski grass, comprising the following steps:

[0070] Step S1: adding 90mL of anhydrous ethanol and 14mL of 28% ammonia water into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirring at a speed of 500r / min for 20min, then adding 21mL of tetraethyl orthosilicate, and magnetically stirring for 3h, and then centrifuging after the reaction, washing the filter cake with deionized water for 3-4 times, dispersing in an ultrasonic oscillator, then adding 4g of methyl hydrogen-containing silicone oil DY-H202 and 0.3g of dibutyltin dilaurate, and magnetically stirring at 25℃ for 5h, and then filtering, washing the filter cake with ethanol for 4 times, and drying at a temperature of 53℃ for 2.5h to obtain modified nano-silica particles;

[0071] Step S2: adding 2g of polysulfone P-1700NT11 and 30mL of dichloromethane into a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirring for 3h to obtain a continuous phase A, and then adding 0.09g of modified nano-silica particles, 4g of lubricating oil 70SN and 5g of sulfonated MN-3A into a beaker, and then placing the beaker in a water bath, and then mechanically stirring for 10min, and then fully emulsifying under the condition of a stirring speed of 500r / min to obtain a dispersed phase B, and then keeping the mechanical stirring speed of the dispersed phase B at 360r / min and the water bath temperature at 30℃, and then adding the continuous phase A into the dispersed phase B, and then continuously stirring and water-bathing for 5h after all the continuous phase A is added, and then filtering, and then washing with distilled water, ethanol and acetone for 3 times respectively, and then filtering and drying to obtain modified microcapsules;

[0072] Step S3: ultrasonic dispersing 1g of modified microcapsules in 10mL of anhydrous ethanol for 30min, and then adding 9g of nylon 6 CM1011G15 and uniformly mixing under ultrasonic stirring for 60min, and then filtering, and then placing in a vacuum drying oven to remove the water at 80℃ for 5h, and then adding into a mold, and then placing the mold into a hot-pressing molding machine, and then molding at 230℃ and a pressure of 10MPa for 20min, and then cooling to 25℃ to obtain modified nylon 6;

[0073] Step S4: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, 1 part of titanium white powder THR-218 were weighed according to parts by weight;

[0074] Step S5: The modified nylon 6, polytetrafluoroethylene fiber D30, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, titanium white powder THR-218 were mixed, and a film was cast by a cast extruder at 100-200℃, and then molded to obtain a self-lubricating and self-cleaning artificial ski grass.

[0075] Comparative Example 2:

[0076] The present comparative example is a preparation method of a self-lubricating and self-cleaning artificial ski grass, comprising the following steps:

[0077] Step S1: 90 mL of anhydrous ethanol, 14 mL of 28% ammonia water were added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirred at a speed of 500 r / min for 20 min, 21 mL of tetraethyl orthosilicate was added, and magnetically stirred for 3 h. After the reaction was completed, centrifugation was performed, the filter cake was washed with deionized water for 3-4 times, and then dispersed in an ultrasonic oscillator. Then 4 g of methyl hydrogen-containing silicone oil DY-H202 and 0.3 g of dibutyltin dilaurate were added, and magnetically stirred at 25℃ for 5 h. The filter cake was washed with ethanol for 4 times, and dried at a temperature of 53℃ for 2.5 h to obtain modified nano-silica particles;

[0078] Step S2: 2 g of polysulfone P-1700NT11 and 30 mL of dichloromethane were added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet pipe, and magnetically stirred for 3 h to obtain a continuous phase A. 0.09 g of modified nano-silica particles, 4 g of lubricating oil 70SN, 5 g of sulfonated MN-3A and 100 mL of deionized water were placed in a beaker, the beaker was placed in a water bath, and mechanical stirring was carried out for 10 min at a speed of 500 r / min. The dispersion phase B was fully emulsified, and the mechanical stirring speed of the dispersion phase B was kept at 360 r / min, and the water bath temperature was kept at 30℃. The continuous phase A was added to the dispersion phase B, and after all the addition, the stirring and water bath were continued for 5 h. Filtration, washing with distilled water, ethanol and acetone for 3 times respectively, and drying after filtration were carried out to obtain modified microcapsules;

[0079] Step S3: 1 g of modified microcapsules was ultrasonically dispersed in 10 mL of anhydrous ethanol for 30 min, 9 g of nylon 6 CM1011G15 was added and uniformly mixed under ultrasonic stirring for 60 min, suction filtered, placed in a vacuum drying oven to dry at 80℃ for 5h to remove the water therein, added to a mold, and the mold was placed into a hot press forming machine, molded at 230℃, 10 MPa pressure for 20 min, and after cooling to 25℃, modified nylon 6 was obtained;

[0080] Step S4: 2 g of tetraethyl orthosilicate, 1 g of disordered mesoporous microspheres TOB-HPC, 20 mL of anhydrous ethanol, and 40 mL of deionized water were added to a three-neck flask equipped with a stirrer, a thermometer, a gas inlet tube, and a reflux condenser, the three-neck flask was placed in a constant temperature water bath at 40℃ and stirred for 24 h, after the reaction was completed, suction filtration was performed, and then washed with ethanol and deionized water for 2 times respectively, and then the product was placed in an oven at 60℃ for drying and grinding, the ground product was laid flat in a porcelain boat and placed in a muffle furnace, the heating rate was set to 3℃ / min, heated to 550℃ and kept for 4h, and after cooling to 25℃, modified silica microspheres were obtained;

[0081] Step S5: 5 g of cotton fibers were immersed in a 0.5 mol / L titanium tetrachloride solution for 4 times and dried, the dried cotton fibers were placed in a porcelain boat and put into a tube furnace, calcined at 600℃ for 2h under nitrogen protection, cooled to 25℃ to obtain titanium dioxide coated carbon microtubes, 100 mg of modified silica microspheres, titanium dioxide coated carbon microtubes and 0.4 g of dodecylamine were added to 60 mL of tris(hydroxymethyl) aminomethane, stirred for 15 min to disperse, 0.2 g of dopamine was added, stirred at 25℃ for 24 h, washed by centrifugation with ethanol, dried at 60℃, and then mixed with 1.7 g of silicone resin SI-MQ204 in 20 mL of ethanol, ultrasonically dispersed for 10 min, and cured in an oven at 120℃ for 2h to obtain a modified silicone resin coating;

[0082] Step S6: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, and 1 part of titanium dioxide THR-218 were weighed according to weight parts;

[0083] Step S7: The modified nylon 6, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, and titanium dioxide THR-218 were mixed, and a film was cast by a cast extruder at 100-200℃, and then molded to obtain a self-lubricating and self-cleaning ski artificial turf.

[0084] Comparative Example 3:

[0085] The present comparative example is a method for preparing a self-lubricating and self-cleaning artificial ski grass, comprising the following steps:

[0086] Step S1: 90 mL of anhydrous ethanol, 14 mL of 28% ammonia water were added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet tube, and magnetically stirred at a speed of 500 r / min for 20 min, 21 mL of tetraethyl orthosilicate was added, and the reaction was magnetically stirred for 3 h. After the reaction was completed, centrifugation was performed, the filter cake was washed with deionized water for 3-4 times, and was dispersed in an ultrasonic oscillator, then 4 g of methyl hydrogen-containing silicone oil DY-H202 and 0.3 g of dibutyltin dilaurate were added, and magnetically stirred at 25℃ for 5 h, filtered, the filter cake was washed with ethanol for 4 times, and dried at a temperature of 53℃ for 2.5 h to obtain modified nano-silica particles;

[0087] Step S2: 2 g of polysulfone P-1700NT11 and 30 mL of dichloromethane were added to a three-necked flask equipped with a stirrer, a thermometer and a gas inlet tube, and magnetically stirred for 3 h to obtain continuous phase A. 0.09 g of modified nano-silica particles, 4 g of lubricating oil 70SN, 5 g of sulfonated MN-3A and 100 mL of deionized water were placed in a beaker, the beaker was placed in a water bath, and mechanical stirring was performed for 10 min at a speed of 500 r / min to obtain dispersed phase B. The mechanical stirring speed of dispersed phase B was kept at 360 r / min, and the water bath temperature was kept at 30℃. Continuous phase A was added to dispersed phase B, and after all the continuous phase A was added, stirring and water bath were continued for 5 h. Filtration was performed, and the filter cake was washed with distilled water, ethanol and acetone for 3 times, respectively, and then dried to obtain modified microcapsules;

[0088] Step S3: 1 g of modified microcapsules was ultrasonically dispersed in 10 mL of anhydrous ethanol for 30 min, 9 g of nylon 6 CM1011G15 was added and uniformly mixed under ultrasonic stirring for 60 min, filtered, and placed in a vacuum drying oven at 80℃ for 5 h to remove the water therein. The mixture was added to a mold, and the mold was placed in a hot press forming machine, and was formed at 230℃ under a pressure of 10 MPa for 20 min, and then cooled to 25℃ to obtain modified nylon 6;

[0089] Step S4: 11.33 g of aluminum isopropoxide and 75 mL of deionized water were added to a flask, stirred at 85 DEG C for 1 h, then 4.44 mL of a 5 mol / L molar fraction nitric acid solution was added and stirred for 1-2 h, allowed to stand and age for 12 h, 75 mL of deionized water and 3 g of polyethylene-polypropylene glycol-polyethylene block copolymer PN04505 were added and stirred for 30 min to obtain a sol, the glass was immersed in an ethanol solution and then placed in an ultraviolet ozone cleaner for activation, ultraviolet irradiation was performed for 1 h, the above sol was spread on the activated glass, and the spin coating parameters were set as follows: slow speed 800 r / min, time 10 s, acceleration 300 r / s; fast speed 2500 r / min, time 20 s, acceleration 400 r / s, the glass after spin coating was placed on a hot plate and heated at 100 DEG C for 30 min to obtain a modified boehmite film;

[0090] Step S5: 13 g of the modified boehmite film was placed in a muffle furnace and kept at 400 DEG C for 2 h, then the modified boehmite film was immersed in hot water at 75 DEG C for 35 min, and then washed with deionized water and ethanol for 3 times, and the modified boehmite film was dried at 53 DEG C; 1 mL of tetraethyl orthosilicate was added to 10 mL of methanol to obtain A liquid, 1.5 mL of 28% ammonia water was added to 15 mL of methanol to obtain B liquid, and ultrasonic dispersion was performed for 30 min; A and B liquids were mixed and ultrasonic dispersed for 30 min, and then allowed to stand and age for 10 h; 4 mL of hexamethyldisilazane was added and hydrothermal treatment was performed at 80 DEG C for 6 h to obtain a transparent hydrophobic sol; the transparent hydrophobic sol was spin coated on the modified boehmite film to obtain a modified hydrophobic film;

[0091] Step S6: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, and 1 part of titanium white powder THR-218 were weighed according to weight parts;

[0092] Step S7: The modified nylon 6, polytetrafluoroethylene fiber D30, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, and titanium white powder THR-218 were mixed, and a film was formed by a casting extruder at 100-200 DEG C, then the modified hydrophobic film was hot-pressed and compounded, and then molded to obtain a ski artificial turf with self-lubricating and self-cleaning functions.

[0093] Comparative Example 4:

[0094] The present comparative example is a preparation method of a ski artificial turf with self-lubricating and self-cleaning functions, comprising the following steps:

[0095] Step S1: 11.33 g of aluminum isopropoxide and 75 mL of deionized water were added to a flask, stirred at 85℃ for 1h, then 4.44 mL of 5 mol / L molar fraction nitric acid solution was added and stirred for 1-2h, and aged for 12h. 75 mL of deionized water and 3 g of polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer PN04505 were added and stirred for 30 min to obtain a sol. The glass was immersed in an ethanol solution and then placed in an ultraviolet ozone cleaning machine for activation. Ultraviolet irradiation was performed for 1h. The above sol was spread on the activated glass. The spin coating parameters were set as follows: slow speed 800 r / min, time 10 s, acceleration 300 r / s; fast speed 2500 r / min, time 20 s, acceleration 400 r / s. The glass after spin coating was placed on a hot plate and heated at 100℃ for 30 min to obtain a modified boehmite film;

[0096] Step S2: 13 g of the modified boehmite film was placed in a muffle furnace and heated at 400℃ for 2h. The modified boehmite film was immersed in hot water at 75℃ for 35 min. After hot water immersion, the modified boehmite film was washed with deionized water and ethanol for 3 times. The modified boehmite film was dried at 53℃. 1 mL of tetraethyl orthosilicate was added to 10 mL of methanol to prepare A liquid. 1.5 mL of 28% ammonia water was added to 15 mL of methanol to prepare B liquid. A and B liquids were ultrasonically dispersed for 30 min and aged for 10h. 4 mL of hexamethyldisilazane was added and hydrothermally treated at 80℃ for 6h to obtain a transparent hydrophobic sol. The transparent hydrophobic sol was spin-coated on the modified boehmite film to obtain a modified hydrophobic film.

[0097] Step S3: 2 g of tetraethyl orthosilicate, 1 g of disordered mesoporous microspheres TOB-HPC, 20 mL of anhydrous ethanol, and 40 mL of deionized water were added to a three-neck flask equipped with a stirrer, thermometer, gas inlet tube, and reflux condenser. The three-neck flask was placed in a constant temperature water bath at 40℃ and stirred for 24h. After the reaction was completed, the product was filtered and washed with ethanol and deionized water for 2 times respectively, and then dried in an oven at 60℃. The dried product was placed in a porcelain boat and heated in a muffle furnace at a heating rate of 3℃ / min to 550℃ and kept for 4h. After cooling to 25℃, modified silica microspheres were obtained.

[0098] Step S4: 5 g of cotton fibers were immersed in a titanium tetrachloride solution with a molar concentration of 0.5 mol / L for 4 times and dried, and the dried cotton fibers were placed in a porcelain square boat and put into a tube furnace, calcined at 600°C for 2h under nitrogen protection, and cooled to 25°C to obtain titanium dioxide coated carbon microtubes. 100 mg of modified silica microspheres, titanium dioxide coated carbon microtubes and 0.4 g of dodecylamine were added to 60 mL of tris-hydroxymethyl aminomethane, stirred for 15 min to disperse, 0.2 g of dopamine was added, stirred at 25°C for 24 h, washed by centrifugation with ethanol, dried at 60°C, then mixed with 1.7 g of silicone resin SI-MQ204 in 20 mL of ethanol, ultrasonically dispersed for 10 min, and cured in an oven at 120°C for 2h to obtain a modified silicone resin coating.

[0099] Step S5: 70 parts of nylon 6 with model number CM1011G15, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, and 1 part of titanium white powder THR-218 were weighed according to weight parts.

[0100] Step S6: The nylon 6 CM1011G15, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, and titanium white powder THR-218 were mixed, and a film was cast by a cast extruder at 100-200°C, then hot-pressed with the modified hydrophobic film, and then molded to obtain a ski artificial turf with self-lubricating and self-cleaning properties.

[0101] The ski artificial turfs with self-lubricating and self-cleaning properties of Examples 1-3 and Comparative Examples 1-4 were tested for wear resistance according to GB / T9867-2008 standard, self-cleaning performance was detected according to GB / T 23764-2009 standard, and low temperature adaptability was detected according to GB / T20394-2019 standard, and the test results are shown in the following table:

[0102]

[0103] Referring to the table, according to the comparison between Examples 1-3 and Comparative Examples 1-4, it can be seen that the addition of modified nylon 6 can significantly reduce the wear loss of the artificial turf and reduce the friction coefficient, indicating that the modified nylon 6 has good self-lubricating properties; the addition of modified silicone resin coating and modified hydrophobic film can effectively remove surface dust and degrade surface attached grease under light, achieving self-cleaning effect.

[0104] In the description of the specification, reference to terms "one embodiment", "an example", "a specific example" and so on is intended to indicate that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. Descriptive expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0105] The above is only an example and illustration of the application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the application or exceed the scope defined in the application.

Claims

1. A self-lubricating and self-cleaning artificial ski turf, characterized in that, The following components by weight are included: 70 parts of modified nylon 6, 10 parts of polytetrafluoroethylene fiber D30, 6 parts of modified hydrophobic film, 4 parts of modified silicone resin coating, 2 parts of active calcium carbonate, 1 part of magnesium stearate, 1 part of antioxidant 1010, 1 part of antistatic agent JL-AS-3, 1 part of titanium white powder THR-218; The self-lubricating and self-cleaning artificial ski grass is prepared by the following steps: The modified nylon 6, polytetrafluoroethylene fiber D30, modified silicone resin coating, active calcium carbonate, magnesium stearate, antioxidant 1010, antistatic agent JL-AS-3, and titanium white powder THR-218 are mixed, and a film is formed by a casting extruder at 100-200℃, then hot-pressed with the modified hydrophobic film, and then molded to obtain the self-lubricating and self-cleaning artificial ski grass; The modified nylon 6 is prepared by the following steps: Step a1: anhydrous ethanol and ammonia water are added to a three-necked flask, and then stirred magnetically, tetraethyl orthosilicate is added, and then stirred magnetically, centrifuged, washed, and dispersed in an ultrasonic oscillator, methyl hydrogen-containing silicone oil and a catalyst are added, and then stirred magnetically, filtered, washed, and dried to obtain modified nano-silicon dioxide particles; Step a2: polysulfone and dichloromethane are added to a three-necked flask, and then stirred magnetically to obtain continuous phase A, modified nano-silicon dioxide particles, lubricating oil, and sodium lignosulfonate are placed in a beaker, the beaker is placed in a water bath, and then mechanically stirred and emulsified to obtain dispersed phase B, continuous phase A is added to dispersed phase B, and then stirred and water-bathed after all the components are added, filtered, washed with distilled water, ethanol, and acetone respectively, and then dried to obtain modified microcapsules; Step a3: the modified microcapsules are poured into anhydrous ethanol and ultrasonically dispersed, nylon 6 powder is added and uniformly mixed under ultrasonic stirring, filtered, and dried in a vacuum drying oven to remove water, added to a mold, and then placed in a hot-pressing molding machine at 230℃ and 10MPa pressure for 20min, and then cooled to 25℃ to obtain modified nylon 6; The modified silicone resin coating is prepared by the following steps: Step c1: tetraethyl orthosilicate, carbon microspheres, anhydrous ethanol, and deionized water are added to a three-necked flask equipped with a stirrer, thermometer, gas inlet tube, and reflux condenser, the three-necked flask is placed in a constant-temperature water bath for stirring reaction, filtered after the reaction is completed, washed with ethanol and deionized water respectively, and then placed in an oven for drying and grinding, the ground product is laid flat in a porcelain boat and placed in a muffle furnace for heating and insulation, and then cooled to obtain modified silicon dioxide microspheres; Step c2: cotton fibers are immersed in a titanium tetrachloride solution and dried, the dried cotton fibers are placed in a porcelain boat and placed in a tube furnace for calcination under nitrogen protection, and then cooled to obtain titanium dioxide-coated carbon microtubes, modified silicon dioxide microspheres, titanium dioxide-coated carbon microtubes, and dodecylamine are added to a three-hydroxymethyl aminomethylmethane solution, stirred to disperse, dopamine is added, stirred, washed with ethanol by centrifugation, dried, and then mixed with silicone resin in ethanol, ultrasonically dispersed, and solidified in an oven to obtain a modified silicone resin coating.

2. The self-lubricating and self-cleaning artificial ski turf according to claim 1, characterized in that, The amount ratio of the anhydrous ethanol, ammonia water, tetraethyl orthosilicate, methyl hydrogen silicone oil and catalyst in step a1 is 80-100mL:12-15mL:20-22mL:3-5g:0.1-0.5g; the mass fraction of the ammonia water is 28%; the catalyst is dibutyltin dilaurate; and the methyl hydrogen silicone oil is Model DY-H202.

3. The self-lubricating and self-cleaning artificial ski turf according to claim 1, wherein, The amount ratio of the polysulfone, dichloromethane, modified nano-silica particles, lubricating oil, lignosulfonate and deionized water in step a2 is 2g:30mL:0.04-0.14g:4g:5g:100mL; the lignosulfonate is Model sulfonated MN-3A; the polysulfone is polysulfone P-1700NT11; and the lubricating oil is lubricating oil 70SN; the amount ratio of the modified microcapsule, anhydrous ethanol and nylon 6 powder in step a3 is 1g:10mL:9g; and the nylon 6 is Model CM1011G15.

4. The self-lubricating and self-cleaning artificial ski turf according to claim 1, wherein, The modified hydrophobic film is prepared by the following steps: Step b1: aluminum isopropyl alcohol and 1 / 2 deionized water are added into a flask, stirred, then nitric acid solution is added and stirred, and then the remaining 1 / 2 deionized water and polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer are added and stirred to obtain a sol, glass is immersed in an ethanol solution, then placed in an ultraviolet ozone cleaning machine for activation, ultraviolet irradiation, the activated glass is covered with the sol, and the spin coating parameters are set as follows: slow speed 800r / min, time 10s, acceleration 300r / s; fast speed 2500r / min, time 20s, acceleration 400r / s; the glass after spin coating is placed on a heating plate, heated, and then a modified boehmite film is obtained; Step b2: the modified boehmite film is placed in a muffle furnace and kept at 400℃ for 2h, then immersed in hot water, soaked, washed with deionized water and ethanol after hot water soaking, and then dried; tetraethyl orthosilicate is added into 2 / 5 methanol as A liquid, ammonia water is added into the remaining 3 / 5 methanol as B liquid, and then ultrasonic dispersion is performed; A and B liquids are mixed and ultrasonic dispersion is performed, and then aging is performed; hexamethyldisilazane is added for hydrothermal treatment to obtain a transparent hydrophobic sol; the transparent hydrophobic sol is spin coated on the modified boehmite film to obtain a modified hydrophobic film.

5. The self-lubricating and self-cleaning artificial ski turf according to claim 4, characterized in that, The amount ratio of the aluminum isopropyl alcohol, deionized water, nitric acid solution and polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer in step b1 is 11.33g:150mL:4.44mL:3g; the polyethylene glycol-polypropylene glycol-polyethylene glycol block copolymer is Model PN04505; and the molar fraction of the nitric acid solution is 5mol / L.

6. The self-lubricating and self-cleaning artificial ski turf according to claim 4, wherein, The amount ratio of the modified boehmite film, tetraethyl orthosilicate, methanol, ammonia water and hexamethyldisilazane in step b2 is 10-15g:1mL:25mL:1.5mL:4mL; and the mass fraction of the ammonia water is 28%.

7. The self-lubricating and self-cleaning artificial ski turf according to claim 1, wherein, The amount ratio of the tetraethyl orthosilicate, carbon microspheres, anhydrous ethanol and deionized water in step c1 is 1-3g: 1g: 20mL: 40mL; the carbon microspheres are disordered mesoporous microspheres TOB-HPC.

8. The self-lubricating and self-cleaning artificial ski turf according to claim 1, characterized in that, The amount ratio of the cotton fiber, tris-hydroxymethyl aminomethane, modified silica microspheres, dodecylamine, dopamine, silicone, ethanol in step c2 is 5g: 60mL: 100mg: 0.4g: 0.2g: 1.7g: 20mL; the molar concentration of the titanium tetrachloride solution is 0.5mol / L; the silicone is silicone SI-MQ204.

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