CN116102811A - Matte master batch, matte artificial grass yarn, preparation method of matte master batch and matte artificial grass yarn and matte artificial lawn - Google Patents
Matte master batch, matte artificial grass yarn, preparation method of matte master batch and matte artificial grass yarn and matte artificial lawn Download PDFInfo
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- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 85
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
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- 239000011521 glass Substances 0.000 claims abstract description 32
- 239000007787 solid Substances 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 25
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 25
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 22
- 239000004698 Polyethylene Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- -1 polyethylene Polymers 0.000 claims abstract description 14
- 229920000573 polyethylene Polymers 0.000 claims abstract description 14
- 239000004595 color masterbatch Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 14
- 239000004611 light stabiliser Substances 0.000 claims description 14
- 230000003078 antioxidant effect Effects 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 8
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 7
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- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 4
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
- C08K7/20—Glass
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a matte master batch, a matte artificial grass yarn containing the matte master batch and a preparation method thereof, wherein the matte master batch comprises the following raw materials in parts by weight: 30-50 parts of solid glass beads, 45-70 parts of low-density polyethylene, 0.5-3.5 parts of dispersing agent and 0.5-3.5 parts of anti-aging agent; the matte artificial grass filaments comprise the following raw materials in parts by weight: 40-60 parts of the matte master batch, 40-60 parts of low-density polyethylene particles, 4-8 parts of color master batch, 1-3 parts of slipping agent and 1-3 parts of anti-aging agent, the solid glass beads play a role in supporting soft polyethylene, so that the manufactured artificial grass filaments are stiff and smooth and show more realistic color, and the addition of the solid glass beads also improves the temperature resistance and wear resistance of the artificial grass filaments.
Description
Technical Field
The invention belongs to the technical field of artificial lawns, and particularly relates to a matte master batch, a matte artificial grass yarn containing the matte master batch, a preparation method of the matte artificial grass yarn and a matte artificial lawn.
Background
Firstly, the existing artificial grass filament product has stronger light reflection and poorer sense of reality;
secondly, the matrix resin of the existing artificial grass yarns is low-density polyethylene, the tips of the artificial grass yarns are easy to bend after the artificial grass yarns are exposed to sunlight in a drying tunnel or in summer, and the grass yarns bent at the tips can cause color difference in visual effect after being paved into the artificial lawn, so that the quality of the artificial lawn is affected;
finally, the existing artificial grass yarns have poor wear resistance, are applied to sports artificial lawns of playgrounds and sports fields, are specially used for various sports events, and have high use frequency, frequent wear, so that the service life of the artificial grass yarns can be further shortened, meanwhile, the playgrounds and the sports fields are mostly open scenes, the artificial lawns also need to cope with changeable climates, particularly hot summer days, and the surface temperature of the artificial lawns can reach about 80 ℃, so that the sports artificial lawns are required to have excellent wear resistance to serve sports and excellent temperature resistance to cope with climates.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides a wear-resistant and temperature-resistant matte master batch, a matte artificial grass yarn containing the matte master batch, a preparation method of the matte artificial grass yarn and a matte artificial lawn, so as to solve the technical problems of over-strong reflection of light, bending of a tip part and poor temperature resistance and wear resistance of the existing artificial grass yarn.
The technical scheme of the invention is realized as follows:
the matte master batch comprises the following raw materials in parts by weight: 30-50 parts of solid glass beads, 45-70 parts of low-density polyethylene, 0.5-3.5 parts of dispersing agent and 0.5-3.5 parts of anti-aging agent.
The matte master batch can be crosslinked with matrix resin of artificial grass yarns, and has good compatibility with the matrix resin; the synthetic grass yarn has a matte effect and can improve the wear resistance and temperature resistance of the synthetic grass yarn when being added into matrix resin of the synthetic grass yarn; in addition, the solid glass beads can be uniformly mixed with matrix resin of the artificial grass filaments in the subsequent processing steps by adopting the form of the polyethylene master batch for wrapping the solid glass beads, so that the solid glass beads are uniformly distributed in the artificial grass filaments, and the artificial grass filaments also have the advantage of convenience in storage.
Preferably, the low density polyethylene comprises 40 to 50 parts of low density polyethylene particles and 15 to 20 parts of low density polyethylene powder. Considering that the master batch is prepared in the form of facilitating the subsequent processing of the solid glass beads, the solid glass beads can be uniformly mixed, so that the solid glass beads are uniformly distributed in each master batch as much as possible during extrusion granulation. If polyethylene particles and solid glass beads are directly adopted for mixing, most of the solid glass beads are gathered at the lower part of the mixed material during mixing, so that extrusion granulation is carried out, and the solid glass beads are not uniformly distributed in the matte master batch; the gaps of the low-density polyethylene particles can be filled by adding the low-density polyethylene powder, so that the sinking of the solid glass beads is prevented as much as possible, meanwhile, the low-density polyethylene powder can be melted quickly when the temperature is initially raised and the mixing is carried out, the viscosity of the mixed material is improved as soon as possible, and the effect of preventing the sinking of the solid glass beads is also achieved.
Preferably, the solid glass beads have a particle size of 600-3000 mesh.
Preferably, the anti-aging agent is an ultraviolet absorber which can better prolong and protect the color of the artificial grass silk product using polyethylene as a main material compared with other types of anti-aging agents.
Specifically, the anti-aging agent used in the present invention is manufactured by Guangzhou Zhi chemical Co., ltd
The fiber has excellent heat resistance and ultraviolet light absorption functions, can absorb most of ultraviolet light in UVB wave bands, further can effectively inhibit photodegradation of high polymer materials, and enhances the color stability of the artificial grass yarns.
The dispersant is a polyethylene wax or EBS dispersant.
The polyethylene wax can be well compatible with polyethylene, has excellent internal lubrication effect on the polyethylene, is beneficial to mixing and preparing the matte master batch, is beneficial to improving the processability of the matte master batch, and is convenient for preparing the matte artificial grass filaments subsequently; the EBS dispersing agent has excellent internal and external lubricating effects, and has good dispersing performance on blue and green color master batches which are difficult to disperse, so that the quality and the processability of finished products of the matte master batch can be improved.
The invention also discloses a matte artificial grass yarn which comprises more than 0 weight percent and less than or equal to 40 weight percent of solid glass beads.
Preferably, the material comprises the following raw materials in parts by weight: 40-60 parts of the matte master batch, 40-60 parts of low-density polyethylene particles, 4-8 parts of color master batch, 1-3 parts of slipping agent and 1-3 parts of anti-aging agent.
The invention adopts the solid glass bead master batch to fill polyethylene to prepare the artificial grass filaments, and has the advantages that: firstly, the solid glass beads are rigid particles, have oleophylic and hydrophobic properties, are well dispersed in polyethylene, play a role in supporting soft polyethylene, and enable the manufactured artificial grass filaments to be straight and drawn; secondly, the manufactured artificial grass filaments are matte, and have more realistic color; finally, the addition of the solid glass beads also improves the temperature resistance and wear resistance of the artificial grass yarns, so that the artificial grass yarns are not easy to bend and wear, and the service life is prolonged.
Preferably, when the matte artificial grass filaments are special-shaped grass, the weight percentage of the solid glass beads is 1-5%, and the particle size of the solid glass beads is 1000-3000 meshes. Because the special-shaped grass is a lamellar structure with uniform thickness, excessive solid glass beads with too small mesh number are not suitable to be added, so that the surface roughness of the artificial grass yarns is easy to cause, and the texture is affected.
Preferably, the slip agent is a PPA processing aid or erucamide.
The PPA processing aid is a master batch with a lubricating function, can effectively improve the openness on the premise of not affecting the mechanical properties of the artificial grass filaments, can obviously shorten the excessive time required by switching the artificial grass filaments into target colors, and improves the color stability of the artificial grass filaments.
Erucamide has the advantages of strong slipping property, small precipitation amount, high temperature resistance and difficult yellowing.
Preferably, the anti-aging agent is an antioxidant and/or a light stabilizer.
Specifically, the antioxidant isBeijing Tiangang auxiliary agent Limited liability company
The AO-B225 antioxidant is a compound antioxidant, can be used for various polyolefin and engineering plastic products and other high polymer materials, effectively prevents thermo-oxidative aging in the processing process and long-term use process, and achieves the purpose of prolonging the service life of the products.
Specifically, the light stabilizer is a pigment of Beijing Tiangang auxiliary agent Limited liability company
The HS-944 light stabilizer has a unique molecular structure, relatively high and moderate molecular mass, and has excellent light stabilization effect, and also has the heat and oxygen aging resistance effect, which is similar to the +.>
The AO-B225 antioxidant can effectively prolong the service time of the artificial grass yarns outdoors.
The invention also discloses a preparation method of the matte artificial grass filaments, which comprises the following steps:
(1) Granulating; preparing raw materials according to the composition and the proportion of the matte master batch, extruding and granulating by using a double-screw extruder, setting the temperature to 190-200 ℃, and preparing the matte master batch after blending extrusion, water cutting and drying;
(2) And (3) wiredrawing: raw materials are prepared according to the components and the proportions of the artificial grass filaments, the temperature is set to 230-240 ℃, the draft ratio is 5-6 times, and the matte artificial grass filaments are prepared through blending extrusion, traction, draft, shaping, winding and twisting.
The invention also discloses a matte artificial turf, which comprises the matte artificial turf, and is particularly suitable for being used as a matte artificial turf of a sports ground because the matte artificial turf has excellent wear resistance and temperature resistance.
Drawings
FIG. 1 is a diagram of a baked product according to example 2 of the present invention;
FIG. 2 is a graph of the baked product of comparative example 1 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The raw materials in the examples were all purchased as conventional commercial products unless otherwise specified.
Example 1
The matte artificial grass yarn comprises the following raw materials in parts by weight: 40 parts of matte master batch, 40 parts of low-density polyethylene particles, 4 parts of color master batch (chromium oxide green), 1 part of slipping agent (erucamide) and 1 part of anti-aging agent.
The anti-aging agent is antioxidant
AO-B225 antioxidant, tokyo Digang auxiliary Co., ltd.) and light stabilizer (YK)>
HS-944 light stabilizer, beijing Tiangang assistant Co., ltd.) in a weight ratio of 1:2.
The matte master batch comprises the following raw materials in parts by weight: 30 parts of solid glass beads (particle size 600 mesh), 45 parts of low density polyethylene (comprising 40 particles and 15 powder), 0.5 part of dispersant (polyethylene wax) and 0.5 part of age resistor (ultraviolet absorber)
Guangzhou Zhi chemical Co., ltd.).
The preparation method of the matte artificial grass filaments comprises the following steps:
(1) Granulating; preparing raw materials according to the composition and the proportion of the matte master batch, extruding and granulating by using a double-screw extruder, setting the temperature to 190 ℃, and preparing the matte master batch after blending extrusion, water cutting and drying;
(2) And (3) wiredrawing: raw materials are prepared according to the components and the proportions of the artificial grass filaments, the temperature is set at 230 ℃, the draft ratio is 5 times, and the matte artificial grass filaments are prepared through blending extrusion, traction, drafting, shaping, winding and twisting.
Example 2
The matte artificial grass yarn comprises the following raw materials in parts by weight: 50 parts of matte master batch, 50 parts of low-density polyethylene particles, 6 parts of color master batch (chromium oxide green), 2 parts of slipping agent (PPA processing aid) and 2 parts of anti-aging agent.
The anti-aging agent is antioxidant
AO-B225 antioxidant, tokyo Digang auxiliary Co., ltd.) and light stabilizer (YK)>
HS-944 light stabilizer, beijing Tiangang assistant Co., ltd.) in a weight ratio of 1:2.
The matte master batch comprises the following raw materials in parts by weight: 40 parts of solid glass beads (particle size 1800 mesh), 58 parts of low-density polyethylene (comprising 40 parts of particles and 18 parts of powder), 2 parts of dispersant (EBS dispersant) and 2 parts of age resistor (ultraviolet absorber)
Guangzhou Zhi chemical Co., ltd.).
The preparation method of the matte artificial grass filaments comprises the following steps:
(1) Granulating; preparing raw materials according to the composition and the proportion of the matte master batch, extruding and granulating by using a double-screw extruder, setting the temperature to 195 ℃, and preparing the matte master batch after blending extrusion, water cutting and drying;
(2) And (3) wiredrawing: raw materials are prepared according to the components and the proportion of the artificial grass filaments, the temperature is set at 235 ℃, the draft ratio is 5.5 times, and the matte artificial grass filaments are prepared through blending extrusion, traction, drafting, shaping, winding and twisting.
Example 3
The matte artificial grass yarn comprises the following raw materials in parts by weight: 60 parts of matte master batch, 60 parts of low-density polyethylene particles, 8 parts of color master batch (chromium oxide green), 3 parts of slipping agent (PPA processing aid) and 3 parts of anti-aging agent.
The anti-aging agent is antioxidant
AO-B225 antioxidant, tokyo Digang auxiliary Co., ltd.) and light stabilizer (YK)>
HS-944 light stabilizer, beijing Tiangang assistant Co., ltd.) in a weight ratio of 1:2.
The matte master batch comprises the following raw materials in parts by weight: 50 parts of solid glass beads (particle size 3000 mesh), 70 parts of low density polyethylene (comprising 50 parts of particles and 20 parts of powder), 3.5 parts of dispersant (polyethylene wax) and 3.5 parts of age resistor (ultraviolet absorber)
Guangzhou Zhi chemical Co., ltd.).
The preparation method of the matte artificial grass filaments comprises the following steps:
(1) Granulating; preparing raw materials according to the composition and the proportion of the matte master batch, extruding and granulating by using a double-screw extruder, setting the temperature to 200 ℃, and preparing the matte master batch after blending extrusion, water cutting and drying;
(2) And (3) wiredrawing: raw materials are prepared according to the components and the proportions of the artificial grass filaments, the temperature is set to 240 ℃, the draft ratio is 6 times, and the matte artificial grass filaments are prepared through blending extrusion, traction, drafting, shaping, winding and twisting.
Comparative example 1
An artificial grass filament comprises the following raw materials in parts by weight: 50 parts of low-density polyethylene particles, 6 parts of color master batch (chromium oxide green), 2 parts of slipping agent (PPA processing aid) and 2 parts of anti-aging agent.
The anti-aging agent is antioxidant
AO-B225 antioxidant, tokyo Digang auxiliary Co., ltd.) and light stabilizer (YK)>
HS-944 light stabilizer, beijing Tiangang assistant Co., ltd.) in a weight ratio of 1:2.
A method for preparing artificial grass filaments, comprising the steps of:
the raw materials are prepared according to the components and the proportion of the artificial grass yarn, the temperature is set at 235 ℃, the draft ratio is 5.5 times, and the artificial grass yarn is prepared through blending extrusion, traction, drafting, shaping, winding and twisting.
Comparative example 2
An artificial grass filament comprises the following raw materials in parts by weight: 50 parts of matte composite, 50 parts of low-density polyethylene particles, 6 parts of color master batch (chromium oxide green), 2 parts of slipping agent (PPA processing aid) and 2 parts of anti-aging agent.
The anti-aging agent is antioxidant
AO-B225 antioxidant, tokyo Digang auxiliary Co., ltd.) and light stabilizer (YK)>
HS-944 light stabilizer, beijing Tiangang assistant Co., ltd.) in a weight ratio of 1:2.
The matte composite material comprises the following raw materials in parts by weight: 40 parts of solid glass beads (particle size 1800 mesh), 58 parts of low-density polyethylene (comprising 40 parts of particles and 18 parts of powder), 2 parts of dispersant (EBS dispersant) and 2 parts of age resistor (ultraviolet absorber)
Guangzhou Zhi chemical Co., ltd.).
A method for preparing artificial grass filaments: the raw materials are prepared and mixed according to the above composition and proportion, the temperature is set at 235 ℃, the draft ratio is 5.5 times, and the artificial grass filaments are prepared through blending extrusion, traction, drafting, shaping, winding and twisting.
Performance testing
Turf was produced from the artificial grass filaments and base fabric described in examples 1-3 and comparative examples 1-2, and then glued by a gum setting machine to produce an artificial turf.
The artificial grass filaments used were diamond monofilaments with a gauge of 50mm grass height, 5/8 inch row spacing, and 15 needles/cm needle density.
(1) High temperature resistance test and matte effect
Examples 1-3 and comparative example 1 were placed in an oven at 95 c for 5 minutes and visually inspected to determine if the tip of the artificial grass strands had bent and had a matte effect, and photographs taken at two angles for each example and comparative example were left.
Test results:
the artificial grass filaments of examples 1-3 all achieve a matte effect with substantially no bends at the tips, and since the photographs of examples 1-3 are highly similar, the drawings show only the photograph of example 2, i.e., as shown in fig. 1;
the artificial grass filaments of comparative example 1 were highly reflective and had essentially all of the tips bent, as shown in fig. 2.
(2) Wear test
The test was carried out according to GB/T20394-2019 national Standard for Artificial grass for sports, the results of which are given in the following Table.
The "retention of breaking force of grass yarn" data in the table is measured after the grass yarn has been subjected to the aging test.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.
Claims (10)
1. The matte master batch is characterized by comprising the following raw materials in parts by weight: 30-50 parts of solid glass beads, 45-70 parts of low-density polyethylene, 0.5-3.5 parts of dispersing agent and 0.5-3.5 parts of anti-aging agent.
2. The matte master batch of claim 1 wherein the low density polyethylene comprises 40-50 parts low density polyethylene particles and 15-20 parts low density polyethylene powder.
3. The method according to claim 1 or 2, wherein the solid glass beads have a particle size of 600-3000 mesh.
4. The matte master batch according to claim 1 or 2, wherein the anti-aging agent is an ultraviolet absorber; the dispersant is a polyethylene wax or EBS dispersant.
5. The matte artificial grass yarn is characterized by comprising more than 0 weight percent and less than or equal to 40 weight percent of solid glass beads.
6. The matte artificial grass yarn of claim 5 wherein when the matte artificial grass yarn is profiled grass, the weight percentage of the solid glass beads is 1-5%, and the solid glass beads have a particle size of 1000-3000 mesh.
7. The matte artificial grass yarn of claim 5 comprising the following raw materials in parts by weight: 40-60 parts of the matte master batch of any of claims 1 to 4, 40-60 parts of low-density polyethylene particles, 4-8 parts of color master batch, 1-3 parts of slipping agent and 1-3 parts of anti-aging agent.
8. The matte artificial grass strand of claim 7 wherein the slip agent is PPA processing aid or erucamide; the anti-aging agent is an antioxidant and/or a light stabilizer.
9. The preparation method of the matte artificial grass filaments is characterized by comprising the following steps of:
(1) Granulating; the matte master batch preparation raw material according to any one of claims 1 to 4, wherein the raw material is extruded and granulated by a double-screw extruder, the temperature is set to 190-200 ℃, and the matte master batch is prepared after blending extrusion, water cutting and drying;
(2) And (3) wiredrawing: the artificial grass filaments according to any one of claims 5 to 8, wherein the artificial grass filaments are prepared by blending extrusion, traction, drafting, shaping, winding and twisting at a temperature of 230-240 ℃ and a draft ratio of 5-6 times.
10. A matte artificial turf comprising a matte artificial grass yarn according to any of claims 5 to 8.
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