High-filling easy-to-disperse color master batch for artificial turf as well as preparation method and application of color master batch

Abstract

The invention discloses a high-filling easily-dispersed color master batch for an artificial turf as well as a preparation method and application of the color master batch, and belongs to the technical field of artificial turfs. The color master batch is prepared from the following raw materials in parts by weight: 30 to 50 parts of resin, 0.1 to 3 parts of ionic polymer, 20 to 40 parts of pigment and 20 to 35 parts of inorganic filler, the preparation method comprises the following steps: (1) weighing the raw materials; and (2) mixing the raw materials, melting and granulating to obtain the composite material. The color master batch disclosed by the invention is high in melt index, good in fluidity, low in water content, regular and smooth in appearance and good in dispersity in production of artificial turf fibers, the produced artificial turf fibers are uniform in color, stable in production and free of filament breakage, and the produced artificial turf products are bright in carpet surface color and free of color difference.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial turf, more particularly to a color master batch for high-filled and easily dispersed artificial turf, and a preparation method and application thereof. BACKGROUND

[0002] Compared with natural turf, artificial turf has the characteristics of high simulation, simple maintenance, low maintenance cost, less influence of rain and snow weather, and all-weather 24-hour use, etc., and has developed rapidly and been widely used in sports fields such as football, hockey, tennis, and landscape leisure places such as garden landscaping and courtyard decoration.

[0003] The artificial turf fiber is made by melting and extruding the polyethylene (PE) or polypropylene (PP) particles mixed with color master batch, UV aging aid, etc. through a single screw extruder, and then cooling, drawing, and shaping, etc. to make artificial turf fiber, and then making artificial turf products through processes such as tufting and back gluing. The five colors of artificial turf are mainly realized by color master batch, which is an important part of artificial turf fiber production and determines the quality and cost of artificial turf. If the color master batch is evenly dispersed during artificial turf fiber production, there will be no color difference in the same batch during artificial turf fiber production, and the color difference of the artificial turf carpet surface will be uniform; otherwise, abnormal situations such as color difference and yarn breakage may occur during artificial turf fiber production, thereby affecting the quality of artificial turf.

[0004] At present, the problem of uneven dispersion of pigments in color master batch is common. The traditional polyethylene carrier (such as low-density polyethylene) has low melt index and insufficient fluidity, which limits the dispersion efficiency. The addition of a high proportion of pigments or additives will significantly increase the cost, and simply reducing the amount of pigments will affect the coloring effect. The shear force of the traditional double screw extruder granulation equipment is limited, and when the proportion of high concentration pigments is high, uneven dispersion and agglomeration may still occur.

[0005] Therefore, how to develop a color master batch with high filling, easy dispersion, low cost characteristics, and suitable for high shear granulation process is an urgent problem for those skilled in the art. SUMMARY

[0006] Therefore, the present application aims to provide a color master batch for high-filled and easily dispersed artificial turf, and a preparation method and application thereof, to solve the problems in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A color master batch for high-filled and easily dispersed artificial turf, comprising the following raw materials by weight: resin 30-50 parts, ionic polymer 0.1-3 parts, pigment 20-40 parts, and inorganic filler 20-35 parts.

[0008] Further, the resin is at least one of low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and polypropylene (PP). Still further, the resin has a melt index of 20-50 g / 10 min. Preferably, it is at least one of high melt index polyethylene powder M1840 (melt index MI 45 g / 10 min), high melt index polyethylene powder 2650 (melt index MI 50 g / 10 min) and high melt index polypropylene powder Z30S (melt index MI 25 g / 10 min).

[0009] The above further advantages are that the present application uses high melt index resin as a carrier, which is more easily melted and plasticized in a screw extruder, can reduce the extrusion temperature and screw torque, reduce the energy consumption of the equipment, and at the same time avoid the problems of "material blocking", "uneven plasticization" and the like caused by poor fluidity, and improve the production efficiency. At the same time, the better flow performance of the high melt index resin also enhances the shearing and mixing effect of the screw on the pigment and filler, helps the pigment particles to be more fully dispersed in the resin, reduces the "color spots" and "color lines" in the color master batch, and the color saturation and consistency of the downstream products are more optimal.

[0010] The high melt index polyethylene powder M1840 is a brand of low density polyethylene (LDPE) produced by Sinopec Yanshan Petrochemical. The original brand is LD450, which is suitable for thin-walled injection molding, foaming and flower landscape and other handicraft manufacturing due to its high melt index characteristics (about 45 g / 10 min). The typical physical parameters of the material include a density of about 0.920 g / cm 3 , a melt flow index of 41.9 g / 10 min (test conditions GB / T 3882-2000), a tensile strength of 7.9 MPa and an elongation at break of 181%. The processing level covers injection molding grade, foaming grade and blowing grade, and the characteristics include high temperature resistance and standard grade, and the use level is marked as food grade and general grade.

[0011] The high melt index polyethylene powder 2650 is a linear low density polyethylene (LLDPE) with a melt flow rate (MI) of 50 g / 10 min and a density of 0.926 g / cm 3 , with high strength, good toughness, heat resistance, cold resistance and good environmental stress cracking resistance. It is mainly used for color master batch processing and is suitable for thin film, profile and other applications.

[0012] The high melt index polypropylene powder Z30S is a high melt index, high flow homopolymer polypropylene resin (PP) with a melt index usually between 25-38 g / 10 min and a density of about 0.90-0.91 g / cm 3, with low ash content (≤0.02%) and high isotacticity (≥96%). It is produced using advanced processes such as Spheripol, with a wide molecular weight distribution, good product homogeneity, suitable for high-speed injection molding, extrusion, and spinning processing. Mainly used in fiber products (such as non-woven fabric, mask, rope), packaging materials (food packaging film, plastic tape), and industrial parts (automobile parts, thin-walled products).

[0013] Further, the aforementioned ionomer includes one or more combinations of ethylene-acrylic acid copolymers neutralized or partially neutralized by metal cations, and / or, ethylene-methacrylic acid copolymers neutralized or partially neutralized by metal cations. Still further, the aforementioned metal cations are at least one of sodium ions, potassium ions, magnesium ions, zinc ions, and lithium ions. Preferably, at least one of AClyn 295A (Honeywell), AClyn 201A (Honeywell), Surlyn 8670 (Dow Chemical), Surlyn 9910 (Dow Chemical), and Surlyn 1702 (Dow Chemical).

[0014] The aforementioned further benefits are that AClyn 295A is a low molecular weight ionomer produced by Honeywell, belonging to the ethylene-acrylic acid copolymer type, often used as a high-efficiency dispersant and lubricant. It appears in the form of white powder, with a relative molecular mass of about 8000, has high crystallinity, and is suitable for plastic processing, color masterbatch manufacturing, etc. In application, AClyn 295A can significantly improve the dispersibility of pigments, enhance the coloring intensity, and improve the compatibility and processing efficiency of materials. Its typical uses include color masterbatch dispersion of PA (nylon), PC (polycarbonate) engineering plastics, and production of general plastic color masterbatch. In addition, it can also be used as an external lubricant to improve the gloss of products.‌

[0015] AClyn 201A is an ethylene-vinyl acetate copolymer wax produced by Honeywell, mainly used as a pigment dispersant in the fields of engineering plastics, color masterbatch, cables, etc. In the production of color masterbatch, its super strong metal stripping and dispersion effect can effectively improve the coloring intensity of difficult-to-disperse pigments, allow higher pigment addition, and have good compatibility with various resins, which helps to improve production efficiency.‌

[0016] Surlyn 8670 is an ionomer resin produced by the Dow Chemical Company, which belongs to the ethylene-methacrylic acid copolymer (E / MAA) series. This material is formed by partially or fully neutralizing high-pressure free radical polymerized ethylene-methacrylic acid copolymer, with a typical acid content of about 6% (molar), and neutralized by sodium, potassium, magnesium or zinc ions. Surlyn 8670 has the typical high-performance properties of ionomers, including high transparency, excellent impact toughness (especially not prone to brittle fracture at low temperatures), good scratch resistance, chemical resistance, and extrudability. These properties make it suitable for applications that require high aesthetic, durability and chemical stability. In the application field, Surlyn 8670 is widely used in cosmetic packaging (such as perfume bottle caps, cream containers to achieve high gloss and protection), sports equipment (such as golf cover layer, using its resilience and wear resistance), electronic product shell and automobile parts, etc. Its sustainability advantage is reflected in the use of mechanical recycling of industrial waste, or the use of bio-based raw materials (such as SURLYN REN) and recycled raw materials (such as SURLYN CIR) production, supporting green manufacturing.

[0017] Surlyn 9910 is a zinc ion type ionomer resin produced by the Dow Chemical Company, which belongs to the ionomer of ethylene-methacrylic acid copolymer. This material has a unique ionic bond structure, combining the processability of thermoplastic plastics and the strength and durability of thermosetting resins. It shows excellent low-temperature impact toughness, wear and scratch resistance, and excellent chemical resistance. It can be processed using conventional polyethylene or ethylene copolymer processing equipment (such as extruders and injection molding machines), suitable for processes such as blow molding, cast film, sheet extrusion, injection molding, etc. The material is transparent, soft and shiny, has good melt strength (does not break in the molten state), and can be directly hot attached to the surface of metal, glass, etc. for decoration and protection.‌

[0018] Surlyn 1702 is a high-performance ionomer material produced by the Dow Chemical Company, belonging to the Ionomer series. Its molecular structure contains partially neutralized carboxylate bonds, which endow the material with excellent mechanical properties, transparency, chemical resistance, and puncture resistance. The material has good moisture and oxidation resistance barrier properties, which helps to extend the shelf life of food, and can be recycled, in line with the green and environmentally friendly trend. In terms of processing, Surlyn 1702 is suitable for blow molding, cast film and sheet extrusion processes, and can be processed with standard polyethylene processing equipment. It shows excellent low-temperature impact toughness, wear resistance and melt strength, and has high surface gloss and good transparency. In addition, the material meets the relevant standards of FDA and belongs to food contact grade, ensuring safety in food packaging applications.

[0019] Further, the above-mentioned pigment is a mixture of inorganic pigment and organic pigment. Further, the above-mentioned inorganic pigment is at least one of rutile titanium dioxide, carbon black, red iron oxide, yellow iron oxide, zinc yellow, ultramarine blue and cobalt blue; the organic pigment is at least one of phthalocyanine blue, phthalocyanine green, azo and heterocyclic pigment. Preferably, it is at least one of phthalocyanine green, 150# yellow, zinc yellow, yellow iron oxide, titanium dioxide and carbon black.

[0020] Further, the above-mentioned inorganic filler is at least one of light calcium carbonate, heavy calcium carbonate, precipitated barium sulfate and natural barium sulfate, with a particle size of 1500-2500 mesh and a surface treatment of phthalate coupling agent or silane coupling agent.

[0021] The above-mentioned further beneficial effect is that the present application introduces inorganic fillers, which can reduce the use of pigments to some extent and reduce the cost of materials. At the same time, the appropriate particle size can balance the uniform distribution in the resin, avoid agglomeration, and have little effect on the melt flowability of the resin, reducing the wear of the screw. Moreover, the present application uses inorganic fillers after surface treatment, which establishes a strong molecular bridge between the inorganic fillers and the resin, significantly improves the dispersibility of the inorganic fillers in the color masterbatch, and also ensures the mechanical properties of the color masterbatch after processing into grass silk.

[0022] A preparation method of a high-filling and easy-dispersing color masterbatch for artificial turf, specifically comprising the following steps: (1) The weight parts of each raw material are weighed according to the high-filling and easy-dispersing color masterbatch for artificial turf. (2) Mix and melt granulate the raw materials to obtain the high-filling and easy-dispersing color masterbatch for artificial turf.

[0023] Further, in step (2), the mixing equipment is a high-speed mixer with a speed of 100-300 r / min for 4-6 min.

[0024] Further, in the step (2), the device for melt granulation is a three-screw extruder, wherein the screw is treated with double-alloy wear resistance, the length-diameter ratio of the screw is 40-48:1, the extrusion temperature is 140-180 DEG C, and the rotation speed of the screw is 400-500 r / min.

[0025] The further beneficial effects of the above-mentioned are that the three-screw extruder adopted by the present application has more advantages than the traditional double-screw extruder. 1. The color master batch of the present application adopts a high-concentration proportion formula of color powder and filler, and the traditional double-screw granulator often appears the bridging phenomenon, while the three-screw extruder has more meshing areas and strong shearing, which avoids the settlement of the filler in the conveying process, and the conveying is stable and efficient.

[0026] 2. The three-screw extruder has stronger dispersion and mixing capacity, can effectively break the pigment / filler agglomerates, improve the coloring power and hiding power, and the batch stability of the color master batch. In the production process of artificial turf, quality defects such as color spots and color difference do not occur, and the mechanical properties of the artificial turf fiber are more stable, and the broken filament does not occur.

[0027] 3. The multiple meshing areas of the three-screw extruder can be designed with multiple exhaust holes, which is beneficial to the exhaust of water vapor and low-molecular volatile substances, and the appearance of the produced color master batch is full and dense, and the hollow particle situation is avoided.

[0028] The present application also claims a color master batch prepared by the above-mentioned method for use in the preparation of artificial turf.

[0029] Through the above technical solution, compared with the prior art, the beneficial effects of the present application are as follows: The color master batch of the present application has high melt index, good fluidity, low water content, regular and smooth appearance, good dispersibility in the production of artificial turf fiber, uniform color of the produced artificial turf fiber, stable production without broken filament, and bright color without color difference on the surface of the produced artificial turf product. Moreover, the raw materials of the present application are widely available, the comprehensive cost is low, the preparation method is simple, the operation is convenient, and the present application is suitable for wide production and application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] Embodiment 1 Highly filled and easily dispersed color master batch for artificial turf, comprising the following raw materials by weight: high melt index polyethylene powder M1840 (melt index MI 45g / 10min) 52.6kg, ionic polymer (AClyn 295A, Honeywell) 0.5kg, phthalocyanine green 2.5kg, 150# yellow 0.6kg, zinc-iron yellow 20kg, titanium dioxide 1kg, carbon black 0.3kg, and surface-treated calcium carbonate 20kg; The preparation method of the above highly filled and easily dispersed color master batch for artificial turf, specifically comprising the following steps: (1) weighing each raw material; (2) first, mix each raw material uniformly in a high-speed mixer, and then extrude and granulate into green color master batch in a three-screw extruder, wherein the mixing speed is 200r / min, the mixing time is 4min, the three-screw extruder temperature is 160℃, and the screw speed is 420r / min.

[0032] Example 2 Highly filled and easily dispersed color master batch for artificial turf, comprising the following raw materials by weight: high melt index polyethylene powder 2650 (melt index MI 50g / 10min) 37.68kg, ionic polymer (AClyn 201A, Honeywell) 1kg, phthalocyanine green 4.52kg, 150# yellow 1.25kg, zinc-iron yellow 16kg, iron oxide yellow 11.25kg, carbon black 1.3kg, and surface-treated calcium carbonate 25kg; The preparation method of the above highly filled and easily dispersed color master batch for artificial turf, specifically comprising the following steps: (1) weighing each raw material; (2) first, mix each raw material uniformly in a high-speed mixer, and then extrude and granulate into dark green color master batch in a three-screw extruder, wherein the mixing speed is 200r / min, the mixing time is 4min, the three-screw extruder temperature is 160℃, and the screw speed is 420r / min.

[0033] Example 3 Highly filled and easily dispersed color master batch for artificial turf, comprising the following raw materials by weight: high melt index polyethylene powder 2650 (melt index MI 50g / 10min) 34.13kg, ionic polymer (Surlyn 8670, Dow Chemical) 1.5kg, phthalocyanine green 4.15kg, 150# yellow 1.21kg, zinc-iron yellow 10.4kg, iron oxide yellow 15.75kg, titanium dioxide 1kg, carbon black 0.36kg, and surface-treated calcium carbonate 30kg; The preparation method of the above highly filled and easily dispersed color master batch for artificial turf, specifically comprising the following steps: (1) weighing each raw material; (2) First, each raw material is mixed uniformly in a high-speed mixer, and then extruded and granulated into a bright green color master batch in a three-screw extruder, wherein the mixing speed is 200 r / min, the mixing time is 4 min, the three-screw extruder temperature is 160°C, and the screw speed is 420 r / min.

[0034] Example 4 The high-filling and easy-dispersing color master batch for artificial turf includes the following raw materials by weight: high-melt-index polyethylene powder 2650 (melt index MI 50 g / 10 min) 36 kg, ionic polymer (Surlyn 9910, Dow Chemical) 2 kg, phthalocyanine green 2 kg, 150# yellow 3 kg, zinc-iron yellow 20 kg, titanium dioxide 1 kg, and surface-treated calcium carbonate 35 kg. The preparation method of the above high-filling and easy-dispersing color master batch for artificial turf specifically includes the following steps: (1) Weigh each raw material; (2) First, each raw material is mixed uniformly in a high-speed mixer, and then extruded and granulated into a bright green color master batch in a three-screw extruder, wherein the mixing speed is 200 r / min, the mixing time is 4 min, the three-screw extruder temperature is 160°C, and the screw speed is 420 r / min.

[0035] Example 5 The high-filling and easy-dispersing color master batch for artificial turf includes the following raw materials by weight: high-melt-index polyethylene powder 2650 (melt index MI 50 g / 10 min) 34.13 kg, ionic polymer (Surlyn 1702, Dow Chemical) 2.5 kg, phthalocyanine green 4.15 kg, 150# yellow 1.21 kg, zinc-iron yellow 10.4 kg, iron oxide yellow 15.75 kg, titanium dioxide 1 kg, carbon black 0.36 kg, and surface-treated barium sulfate 30 kg. The preparation method of the above high-filling and easy-dispersing color master batch for artificial turf specifically includes the following steps: (1) Weigh each raw material; (2) First, each raw material is mixed uniformly in a high-speed mixer, and then extruded and granulated into a bright green color master batch in a three-screw extruder, wherein the mixing speed is 200 r / min, the mixing time is 4 min, the three-screw extruder temperature is 160°C, and the screw speed is 420 r / min.

[0036] Example 6 Highly filled and easily dispersed color master batch for artificial turf, comprising the following raw materials by weight: high melt index polypropylene powder Z30S (melt index MI 25 g / 10 min) 44.35 kg, ionic polymer (AClyn 201A, Honeywell) 2.5 kg, phthalocyanine green 4.6 kg, 150# yellow 4.25 kg, zinc-iron yellow 14.2 kg, carbon black 0.6 kg, and surface-treated calcium carbonate 30 kg; The preparation method of the above highly filled and easily dispersed color master batch for artificial turf, specifically comprising the following steps: (1) weighing each raw material; (2) first mix each raw material uniformly in a high-speed mixer, and then extrude and granulate into olive green color master batch in a three-screw extruder, wherein the mixing speed is 200 r / min, the mixing time is 4 min, the three-screw extruder temperature is 160°C, and the screw speed is 400 r / min.

[0037] Comparative Example 1 Color master batch for artificial turf, comprising the following raw materials by weight: polyethylene powder 7042 (melt index MI 2.0 g / 10 min) 52.6 kg, polyethylene wax 2.5 kg, phthalocyanine green 2.5 kg, 150# yellow 0.6 kg, zinc-iron yellow 20 kg, titanium dioxide 1 kg, carbon black 0.3 kg, and surface-treated calcium carbonate 20 kg; The preparation method of the above color master batch for artificial turf, specifically comprising the following steps: (1) weighing each raw material; (2) first mix each raw material uniformly in a high-speed mixer, and then extrude and granulate into olive green color master batch in a three-screw extruder, wherein the mixing speed is 200 r / min, the mixing time is 4 min, the three-screw extruder temperature is 160°C, and the screw speed is 400 r / min.

[0038] Comparative Example 2 Color master batch for artificial turf, comprising the following raw materials by weight: polypropylene powder T30S (melt index MI 3.0 g / 10 min) 44.35 kg, oxidized polyethylene homopolymer wax (A-C 629A, Honeywell) 2.5 kg, phthalocyanine green 4.6 kg, 150# yellow 4.25 kg, zinc-iron yellow 14.2 kg, carbon black 0.6 kg, and surface-treated calcium carbonate 30 kg; The preparation method of the above color master batch for artificial turf, specifically comprising the following steps: (1) weighing each raw material; (2) first mix each raw material uniformly in a high-speed mixer, and then extrude and granulate into olive green color master batch in a three-screw extruder, wherein the mixing speed is 200 r / min, the mixing time is 4 min, the three-screw extruder temperature is 160°C, and the screw speed is 400 r / min.

[0039] Performance test 1. Appearance inspection Each of the color master batch samples 100 g prepared according to Examples 1-6 and Comparative Examples 1-2 was spread on a white tray, and whether the particles were uniform, whether there were impurities (black spots, foreign matter), whether the color was consistent, whether there were lumps or breakage, and the number of unqualified particles were observed under natural light.

[0040] 2. Moisture content test The moisture content of each color master batch sample was measured using a moisture tester.

[0041] 3. Dispersion test The color master batch was mixed with polyethylene resin at a ratio of 1:20, and a film with a thickness of 0.1 mm was blown. Whether there were undispersed color spots on the film was observed, and the number of color spots was counted.

[0042] 4. Production color uniformity and stability The color master batch produced according to Examples 1-5 and Comparative Example 1 was mixed with polyethylene particles, aged master batch, etc. to produce DTEX 4000 / 6F C-shaped PE artificial turf fibers on a plastic extrusion and drawing extruder at a speed of 100 m / min.

[0043] The color master batch produced according to Example 6 and Comparative Example 2 was mixed with polypropylene particles, aged master batch, etc. to produce DTEX 2200 / 8F PP artificial turf crimped fibers on a plastic extrusion and drawing extruder at a speed of 500 m / min. The color uniformity and drawing stability of the artificial turf fibers were observed, and whether there were broken yarns, etc.

[0044] The results are shown in Table 1.

[0045] Table 1 Performance test results of color master batch of Examples 1-6 and Comparative Examples 1-2

[0046] As can be seen from Table 1, compared with Comparative Examples 1-2, the color master batch of Examples 1-6 has a high melt index, good fluidity, low moisture content, regular and smooth appearance, good dispersion in artificial turf fiber production, uniform color of the produced artificial turf fibers, stable production without broken yarns, and bright and color-difference-free turf surface color of the produced artificial turf product. Moreover, the raw materials of the present application are widely available, the comprehensive cost is low, the preparation method is simple, the operation is convenient, and the present application is suitable for wide production and application.

[0047] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A color masterbatch for highly filled and easily dispersible artificial turf, characterized in that, It includes the following raw materials in parts by weight: 30-50 parts resin, 0.1-3 parts ionomer, 20-40 parts pigment and 20-35 parts inorganic filler.

2. The color masterbatch for highly filled and easily dispersible artificial turf according to claim 1, characterized in that, The resin is at least one of low-density polyethylene, linear low-density polyethylene, and polypropylene.

3. A color masterbatch for highly filled and easily dispersible artificial turf according to claim 1 or 2, characterized in that, The melt flow index of the resin is 20-50 g / 10 min.

4. The color masterbatch for highly filled and easily dispersible artificial turf according to claim 1, characterized in that, The ionic polymer includes one or more compositions of ethylene-acrylic acid copolymers prepared by neutralization or partial neutralization with metal cations, and / or one or more compositions of ethylene-methacrylic acid copolymers prepared by neutralization or partial neutralization with metal cations.

5. A color masterbatch for highly filled and easily dispersible artificial turf according to claim 4, characterized in that, The metal cation is at least one selected from sodium ion, potassium ion, magnesium ion, zinc ion and lithium ion.

6. The color masterbatch for highly filled and easily dispersible artificial turf according to claim 1, characterized in that, The pigment is a mixture of inorganic and organic pigments; the inorganic pigment is at least one of rutile titanium dioxide, carbon black, iron oxide red, iron oxide yellow, zinc iron yellow, ultramarine, and cobalt blue; the organic pigment is at least one of phthalocyanine blue, phthalocyanine green, azo, and heterocyclic pigments.

7. The color masterbatch for highly filled and easily dispersible artificial turf according to claim 1, characterized in that, The inorganic filler is at least one of light calcium carbonate, heavy calcium carbonate, precipitated barium sulfate and natural barium sulfate, with a particle size of 1500-2500 mesh, and is surface treated with phthalate coupling agent or silane coupling agent.

8. A method for preparing a color masterbatch for highly filled and easily dispersible artificial turf, characterized in that, Specifically, the following steps are included: (1) Weigh each raw material according to the weight parts of the high-filling, easily dispersible artificial turf masterbatch as described in any one of claims 1-7; (2) Mix the raw materials, melt and granulate them to obtain the high-filling and easily dispersible artificial turf masterbatch.

9. A method for preparing a high-filling, easily dispersible masterbatch for artificial turf according to claim 8, characterized in that, In step (2), the mixing equipment is a high-speed mixer with a rotation speed of 100-300 r / min and a time of 4-6 min; the melting and granulation equipment is a three-screw extruder, wherein the screw is treated with bi-alloy wear resistance, the screw length-to-diameter ratio is (40-48):1, the extrusion temperature is 140-180℃, and the screw rotation speed is 400-500 r / min.

10. The use of a color masterbatch as described in any one of claims 1-7 or a color masterbatch prepared by the preparation method as described in claim 8 or 9 in the preparation of artificial turf.

Images