Low-carbon environment-friendly adhesive composition for artificial turf, artificial turf and preparation method of low-carbon environment-friendly adhesive composition

Abstract

The invention discloses a low-carbon environment-friendly adhesive composition for an artificial turf, the artificial turf and a preparation method of the artificial turf, and relates to the technical field of the artificial turf. The invention discloses an ethylene-vinyl acetate copolymer emulsion which comprises the following components in percentage by mass: 10-60% of an ethylene-vinyl acetate copolymer emulsion, 5-40% of a functional resin emulsion and 0.1-10% of a functional aid, 0-80% of an inorganic filler; the functional resin emulsion comprises one or more of rosin resin emulsion or terpene resin emulsion; the functional additive is composed of a defoaming agent and a low-foam surfactant. According to the invention, a special defoaming agent combination and a special low-foam surfactant are selected and matched in a proper proportion, so that the composition can keep good fluidity and permeability under the conditions of high and low temperature of preparation and subsequent long-term storage, and the large-scale continuous production requirement is met.

Description

Technical Field

[0001] This invention relates to the field of artificial turf technology, specifically to a low-carbon and environmentally friendly adhesive composition for artificial turf, artificial turf, and a method for preparing the same. Background Technology

[0002] With the increasing popularity of artificial turf, more and more places around the world are laying and using this product. As a light industrial product, artificial turf is mainly made of chemical raw materials such as plastics and adhesives. Currently, against the backdrop of global carbon neutrality, all industries are undergoing a "green revolution," and the artificial turf industry is no exception.

[0003] To date, the artificial turf industry still largely uses styrene-butadiene rubber (SBR) and polyurethane adhesives as the bonding layer. These materials are heavily criticized for VOC pollution issues at both the production and usage ends. Therefore, there is a need to develop a low-carbon, environmentally friendly adhesive that meets performance requirements to align with the sustainable development trend of the artificial turf industry. Ethylene-vinyl acetate copolymer emulsion, as a low-VOC latex, does not contain toxic substances such as 4-phenylcyclohexene, 4-ethylene-1-cyclohexene, styrene, and ethylbenzene, making it a relatively ideal material. However, research on ethylene-vinyl acetate copolymer emulsion as an adhesive by artificial turf manufacturers is still limited and not yet mature. Invention patent CN120759166A discloses a high-permeability turf and its preparation method, in which the inventors use a compound of ethylene-vinyl acetate copolymer emulsion and carboxylated SBR emulsion. The SBR emulsion accounts for a large proportion, making it impossible to avoid the problem of benzene-based volatile organic compound pollution. Invention patent CN103725227B discloses an environmentally friendly water-resistant latex composition for artificial turf backing adhesive. The inventors prepared the adhesive composition using ethylene-vinyl acetate copolymer emulsion, which showed good water resistance after being applied to artificial turf. However, our research found that this invention composition could not maintain good fluidity for a long time, and could not guarantee the stability of product quality during continuous industrial production.

[0004] Therefore, how to develop a low-carbon, environmentally friendly adhesive composition for artificial turf that is easy to produce continuously on a large scale, as well as artificial turf and its preparation method, are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a low-carbon and environmentally friendly adhesive composition for artificial turf, artificial turf, and a method for preparing the same.

[0006] A low-carbon, environmentally friendly adhesive composition for artificial turf, comprising the following components by weight percentage: Ethylene-vinyl acetate copolymer emulsion 10-60%, wherein the solid content of the ethylene-vinyl acetate copolymer emulsion is 40-60%; The functional resin emulsion comprises 5-40%, of which the solid content of the functional resin emulsion is 40-60%. Functional additives 0.1-10%; Inorganic fillers 0-80%; The ethylene-vinyl acetate copolymer emulsion contains 65-95% vinyl acetate structural units as the matrix resin ethylene-vinyl acetate copolymer by mass percentage. The functional resin emulsion includes one or more of rosin resin emulsion or terpene resin emulsion; The functional additives consist of defoamers and low-foaming surfactants.

[0007] Furthermore, the low-carbon and environmentally friendly adhesive composition for artificial turf comprises the following components by weight percentage: Ethylene-vinyl acetate copolymer emulsion 20-50%; Functional resin emulsion 10-30%; The defoamer is 0.1-1%, preferably 0.45-0.65%, and the low-foaming surfactant is 0.5-3.5%, preferably 1.5-2.5%. Inorganic fillers comprise 30-65%.

[0008] Furthermore, the defoamer includes one or more of the following: silicone defoamer, polyether defoamer, mineral oil defoamer, or higher alcohol defoamer.

[0009] Furthermore, the defoamer is a mixed defoamer composed of silicone defoamer and higher alcohol defoamer. By mass percentage, the silicone defoamer accounts for 50-80% of the total mixed defoamer, preferably 60-70%, and the remainder is higher alcohol defoamer.

[0010] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: Organosilicon defoamers have a longer-lasting foam-suppressing effect, effectively inhibiting foam generation during prolonged stirring in the preparation of adhesive compositions; higher alcohol defoamers have rapid defoaming capabilities, and more importantly, excellent defoaming effects at high temperatures. During the stirring and preparation of adhesive compositions, especially in high-temperature environments like summer, prolonged stirring generates more heat in the composition system, leading to an increase in system temperature. Through the synergistic effect of combining organosilicon and higher alcohol defoamers in appropriate proportions, foam generation during the preparation of adhesive compositions can be effectively prevented, further improving the flowability and permeability issues of the composition caused by the presence of foam in the later stages.

[0011] Furthermore, the low-foaming surfactant contains polyethylene oxide segments or polydimethylsiloxane segments.

[0012] Furthermore, the low-foaming surfactant includes one or more of nonionic surfactants containing polyethylene oxide segments and anionic surfactants containing polyethylene oxide segments.

[0013] Furthermore, the low-foaming surfactant includes a mixture of nonionic surfactants containing polyethylene oxide segments and anionic surfactants containing polyethylene oxide segments. By mass percentage, the nonionic surfactants containing polyethylene oxide segments account for 40-70% of the total amount of the mixture of low-foaming surfactants, preferably 50-60%, and the remainder is anionic surfactants containing polyethylene oxide segments.

[0014] Furthermore, the nonionic surfactant containing polyethylene oxide segments includes one or more of polyoxyethylene sorbitan fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymers, fatty acid polyoxyethylene ethers, or fatty alcohol polyoxyethylene ethers, and the anionic surfactant containing polyethylene oxide segments includes one or more of polycarboxylates, sulfonates, phosphates, or polyacrylates.

[0015] The beneficial effects of adopting the above-mentioned further technical solutions: In researching ethylene-vinyl acetate copolymer emulsion adhesive systems, the inventors discovered that foam has a significant impact on the application of the entire system in artificial turf backing adhesives. The adhesive system involved in this invention has poor long-term stability and requires the addition of suitable types and proportions of surfactants to prepare a stable composition system. However, during the preparation process, foam generation adsorbs surfactants, making the entire system unstable. Therefore, for the adhesive composition system of this invention to be stable, low-foaming surfactants are crucial. This invention selects suitable low-foaming mixed surfactants containing polyethylene oxide segments, ensuring that there is no strong foaming problem during the preparation of the adhesive composition. Simultaneously, a good defoamer combination is used, allowing the prepared adhesive composition to exhibit good flowability and permeability in the later stages.

[0016] Furthermore, the ethylene-vinyl acetate copolymer emulsion is prepared by emulsion polymerization, and the ethylene monomer used in the polymerization is derived from one or more of petroleum, natural gas, coal, sugarcane, corn or cassava, preferably sugarcane.

[0017] Furthermore, the ethylene-vinyl acetate copolymer emulsion is prepared by emulsion polymerization of ethylene and vinyl acetate, specifically through the following steps: Add deionized water, stabilizer, emulsifier, and dispersant to a reactor and stir at 100-200 rpm for 10-20 minutes to mix the materials evenly. Divide the vinyl acetate monomer into two parts, then add the first part of vinyl acetate monomer. Raise the reactor temperature to 50-70℃ and introduce ethylene gas. When the pressure reaches 35-45 bar, close the ethylene valve and add an initiator to the reactor to initiate the reaction. Then, add the remaining vinyl acetate monomer within 60-120 minutes and continue to introduce ethylene gas until the pressure inside the reactor reaches 50-60 bar. After maintaining the temperature for 5-6 hours, add an antifoaming agent for degassing treatment for 1-2 hours to prepare an ethylene-vinyl acetate copolymer emulsion.

[0018] Furthermore, the inorganic filler includes one or more of calcium carbonate, mica, barium sulfate, aluminum hydroxide, magnesium hydroxide, talc, wollastonite, glass microspheres, or silicon dioxide.

[0019] Furthermore, the aforementioned functional resin emulsion is a terpene resin emulsion.

[0020] Furthermore, the aforementioned functional resin emulsion is prepared by a functional resin emulsification method.

[0021] Furthermore, the specific steps for preparing the above-mentioned terpene resin emulsion by the terpene resin emulsification method are as follows: Add deionized water, emulsifier, and terpene resin to the reactor, start stirring, and adjust the stirring speed to 50-150 rpm. Heat to 100-150℃, and simultaneously turn on the dispersion device, adjusting the dispersion disc speed to 5000-15000 rpm. Maintain the temperature for 10-30 minutes, then turn on the emulsification device, adjusting the emulsification head speed to 8000-25000 rpm. Continue to maintain the temperature for 2-5 hours, cool to 40-60℃, and discharge to obtain the terpene resin emulsion.

[0022] Furthermore, the terpene resin emulsion includes one or more of the following: poly-α-pinene resin emulsion, poly-β-pinene resin emulsion, polylimonene resin emulsion, C5-modified poly-α-pinene resin emulsion, C9-modified poly-α-pinene resin emulsion, C5-modified poly-β-pinene resin emulsion, C9-modified poly-β-pinene resin emulsion, or terpene phenol resin emulsion.

[0023] Furthermore, the rosin resin emulsion includes one or more of hydrogenated rosin ester emulsion, rosin glycerol ester emulsion, or rosin pentaerythritol ester emulsion.

[0024] Furthermore, the aforementioned low-carbon and environmentally friendly adhesive composition for artificial turf also includes one or both of color paste or thickener.

[0025] This invention also provides a method for preparing a low-carbon and environmentally friendly adhesive composition for artificial turf, comprising the following steps: (1) Weigh each raw material according to the low-carbon and environmentally friendly adhesive composition for artificial turf; (2) Mix and stir the ethylene-vinyl acetate copolymer emulsion, functional resin emulsion, functional additives and inorganic fillers to obtain the low-carbon and environmentally friendly adhesive composition for artificial turf.

[0026] The beneficial effects of the present invention are: the preparation method of the adhesive composition for artificial turf of the present invention is simple and conducive to industrial application.

[0027] Furthermore, in step (2), the stirring speed is 400-600 rpm and the stirring time is 30-60 min.

[0028] The present invention also provides an artificial turf, comprising the low-carbon and environmentally friendly adhesive composition for artificial turf, artificial grass fibers and a backing fabric, wherein the artificial grass fibers are tufted on the backing fabric, and the adhesive backing surface of the backing fabric is coated with the low-carbon and environmentally friendly adhesive composition for artificial turf.

[0029] This invention also provides a method for preparing artificial turf, comprising the following steps: 1) Polyethylene and / or polypropylene are melt-extruded, drawn into fibers, and heat-set to obtain artificial grass fibers; 2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; 3) The artificial turf is uniformly coated onto the backing surface of the obtained artificial turf semi-finished product with a low-carbon and environmentally friendly adhesive composition, and then dried to obtain the artificial turf.

[0030] The beneficial effects of the present invention are: the artificial turf preparation method of the present invention is simple and conducive to industrial application.

[0031] Furthermore, in step 1), the melt extrusion temperature is 160-270℃; the stretching temperature is 80-120℃; the stretching ratio is 3-7; the heat setting temperature is 80-120℃; and the shrinkage ratio is 0.75-0.95.

[0032] Furthermore, in step 3), the amount of adhesive used for artificial turf is 500-1500 kg / m². 2 .

[0033] Furthermore, in step 3), the drying temperature is 100-150℃ and the drying time is 8-14 min.

[0034] The beneficial effects of this invention are: First, the low-carbon and environmentally friendly adhesive composition of the present invention uses an ethylene-vinyl acetate copolymer emulsion with a certain proportion of ethylene segments as the main component of the adhesive, and is combined with a certain proportion of functional resin emulsion, so that the adhesive composition can have a good wetting effect on the substrate during the curing stage. In particular, when the functional resin emulsion is a terpene resin emulsion, its non-polar properties further increase the bonding strength of the entire adhesive composition to polyolefin grass fibers. Secondly, stability is crucial for obtaining an adhesive composition suitable for large-scale continuous artificial turf production. Stability here primarily refers to the composition's ability to maintain good flowability and penetration over a considerable period to meet the needs of continuous production. Our research has revealed that foam significantly impacts existing ethylene-vinyl acetate adhesive systems, hindering the flowability of the entire system and adsorbing surfactants, leading to progressively worse stability. Therefore, this invention utilizes a specific combination of defoamers and low-foaming surfactants in appropriate proportions to ensure the composition maintains good flowability and penetration under both high and low temperature conditions during preparation and during long-term storage, thus meeting the demands of large-scale continuous production. Finally, the adhesive composition of the present invention makes extensive use of raw materials with low VOC content and bio-based materials, which meets the current development needs of low carbon and environmental protection. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The ethylene-vinyl acetate copolymer emulsion used in the embodiments and comparative examples of this invention was prepared by emulsion polymerization, and the specific steps are as follows: According to mass percentage, add 48.5% deionized water, 3% hydroxyethyl cellulose, 0.1% disodium ethylenediaminetetraacetate, 0.2% ammonium polycarboxylate, and 1.5% fatty alcohol polyoxyethylene ether (65% solid content) to the reactor. Stir at 150 rpm for 15 minutes to mix the materials evenly. Adjust the pH of the materials to 4.5 with formic acid (not included in the mass percentage). Add 0.01% Mohr's salt. Divide the 37.6% vinyl acetate monomer into two parts, and then add the first part of 10% vinyl acetate. The vinyl acetate monomer was heated to 55°C in a reactor and ethylene gas was introduced. When the pressure reached 40 bar, the ethylene valve was closed, and 0.3% tert-butyl hydroperoxide and 0.6% disodium hydroxyacetic acid sulfinate were added dropwise to the reactor to initiate the reaction. Then, the remaining 27.6% of vinyl acetate monomer was added within 90 min, and ethylene gas was continued to be introduced (a total of 8.09% ethylene gas was introduced twice) until the pressure inside the reactor reached 52 bar. After holding at this temperature for 5 h, 0.1% silicone defoamer (30% solids content, TEGO® Foamex 810, Evonik Industries) was added for degassing treatment for 2 h to prepare an ethylene-vinyl acetate copolymer emulsion.

[0037] The functional resin emulsion used in the embodiments and comparative examples of this invention to prepare the compositions is a terpene resin emulsion, which is prepared by a resin emulsion method. The specific steps are as follows: According to the mass percentage, 58% terpene resin (poly-α-pinene resin, KMR 100, Guangdong Hualin Chemical Co., Ltd.), 2% sodium dodecyl sulfonate, 5% styrene-polyacrylamide, and 35% deionized water were added to the reactor. The stirring was started at 100 rpm, and the temperature was adjusted to 130℃ to start heating. When the temperature reached 100℃, the dispersion device was started, and the speed was adjusted to 9000 rpm. When the temperature reached 130℃, it was kept at this temperature for 20 minutes. Then, the emulsification device was started at 19000 rpm, and the temperature was kept at this temperature for 4 hours. The mixture was cooled to 40℃ and discharged to prepare the terpene resin emulsion.

[0038] In the embodiments and comparative examples of this invention, the defoamer is a silicone defoamer (TEGO® Foamex 810, Evonik Industries) and a high-carbon alcohol defoamer (A-213H, Shandong Punio Water Treatment Technology Co., Ltd.). The method for preparing artificial grass fibers in the embodiments and comparative examples of the present invention is as follows: polyethylene is melt-extruded at a temperature of 220°C, stretched and heat-set at a temperature of 97°C with a stretch ratio of 5, heat-set at a temperature of 99°C, and a shrinkage ratio of 0.8 to obtain artificial grass fibers. In the embodiments and comparative examples of this invention, an adhesive composition for artificial turf is uniformly applied to the backing surface of the obtained artificial turf semi-finished product, and then dried to obtain artificial turf. The drying temperature is 120°C and the drying time is 15 minutes.

[0039] Example 1 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0040] Comparative Example 2 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); 45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0041] Comparative Example 3 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer, 44.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0042] Comparative Example 4 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); low-foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 43% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0043] Table 1. Raw material ratios, composition viscosity, and mechanical properties of individual grass fibers in different embodiments and comparative examples.

[0044] Note: NG in the table indicates that the adhesive composition cannot flow, the same below; the initial, 1h and 2h pull-out force of the innermost single grass fiber represent the pull-out force of the innermost single grass fiber after the adhesive composition is backed when the adhesive composition is applied for mass production, at the initial time, 1 hour and 2 hours respectively.

[0045] As can be seen from the test data of the examples and comparative examples in Table 1, when the low-carbon and environmentally friendly adhesive composition of the present invention is applied to the backing of artificial turf, the adhesive composition can maintain good fluidity and permeability due to the selection of appropriate functional additives. When industrial continuous production is carried out, the individual grass fibers inside the artificial turf, which are the most difficult to penetrate, can always have a good bonding effect, thus ensuring the stability of the product.

[0046] Example 2 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.275% silicone defoamer, 0.275% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0047] Example 3 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.33% silicone defoamer, 0.22% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0048] Example 4 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.385% silicone defoamer, 0.165% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0049] Example 5 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.44% silicone defoamer, 0.11% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0050] Example 6 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 0.8% polyoxyethylene sorbitan fatty acid ester, 1.2% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0051] Example 7 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1% polyoxyethylene sorbitan fatty acid ester, 1% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0052] Example 8 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.2% polyoxyethylene sorbitan fatty acid ester, 0.8% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0053] Example 9 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.4% polyoxyethylene sorbitan fatty acid ester, 0.6% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0054] Table 2. Test data on raw material ratios, composition viscosity, and mechanical properties of individual grass fibers in different embodiments.

[0055] As can be seen from the test data of Examples 2-5 in Table 2, a suitable ratio of silicone defoamer and higher alcohol defoamer is required in the defoamer. As the amount of silicone defoamer gradually decreases, its foam-suppressing ability gradually weakens. The presence of foam leads to excessive adsorption of surfactants, affecting the overall viscosity stability of the system. During the preparation of the adhesive composition from mixed raw materials, the temperature of the composition rises due to heat generated by stirring. As the amount of higher alcohol defoamer gradually decreases, the effect of the defoamer at high temperatures is affected, and the resulting foam will also affect the viscosity stability of the entire adhesive composition in the later stages. As can be seen from the test data of Examples 6-9 in Table 2, a suitable ratio of nonionic and anionic surfactants in low-foaming surfactants is also required. Too much nonionic surfactant and too little anionic surfactant, or too little nonionic surfactant and too much anionic surfactant, tend to worsen the viscosity stability of the entire adhesive composition system.

[0056] Example 10 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.065% silicone defoamer, 0.035% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.9% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0057] Example 11 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.293% silicone defoamer, 0.157% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.55% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0058] Example 12 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.423% silicone defoamer, 0.227% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.35% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0059] Example 13 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.65% silicone defoamer, 0.35% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0060] Example 14 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 0.275% polyoxyethylene sorbitan fatty acid ester, 0.225% isooctyl alcohol polyoxyethylene ether phosphate; 43.95% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0061] Example 15 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 0.825% polyoxyethylene sorbitan fatty acid ester, 0.675% isooctyl polyoxyethylene ether phosphate; 42.95% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2Then, it is dried to obtain artificial turf.

[0062] Example 16 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.375% polyoxyethylene sorbitan fatty acid ester, 1.125% isooctyl polyoxyethylene ether phosphate; 41.95% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0063] Example 17 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 35% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 20% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.925% polyoxyethylene sorbitan fatty acid ester, 1.575% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0064] Table 3. Test data on raw material ratios, composition viscosity, and mechanical properties of individual grass fibers in different embodiments.

[0065] As can be seen from Examples 10-13 in Table 3, the amount of mixed defoamer needs to be within a suitable range. When the total amount is too low, the defoaming effect cannot be achieved when preparing the adhesive composition. Excessive foam adsorbs more surfactant, affecting the viscosity stability of the entire adhesive composition. When the total amount is too high, the defoaming effect is obvious, but excessive additives will affect the interfacial adhesion between the adhesive and the grass fibers in the later stage, resulting in a decrease in pull-out force. As can be seen from the test results of Examples 14-17, the total amount of low-foaming surfactant also needs to be within a suitable range. When the total amount is too low, there is a tendency for the viscosity stability of the adhesive composition to deteriorate. When the total amount is too high, excessive additives will affect the adhesion strength between the adhesive and the grass fibers in the later stage, affecting the pull-out force.

[0066] Example 18 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 50% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 5% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0067] Example 19 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 45% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 10% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0068] Example 20 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 25% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 30% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0069] Example 21 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 15% ethylene-vinyl acetate copolymer emulsion (solid content 55%); 40% terpene resin emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, terpene resin emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at a speed of 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0070] Comparative Example 1 The method for preparing artificial turf includes the following steps: (1) Weigh the following components by mass percentage: 55% ethylene-vinyl acetate copolymer emulsion (solid content 55%); defoamer: 0.35% silicone defoamer, 0.20% higher alcohol defoamer; low foaming surfactant: 1.1% polyoxyethylene sorbitan fatty acid ester, 0.9% isooctyl alcohol polyoxyethylene ether phosphate; 42.45% calcium carbonate; Ethylene-vinyl acetate copolymer emulsion, defoamer, low-foaming surfactant and calcium carbonate were mixed and stirred at 500 rpm for 40 min to obtain a low-carbon and environmentally friendly adhesive composition for artificial turf. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0071] Table 4. Raw material ratios and mechanical property test data of single grass fibers in different embodiments and comparative examples.

[0072] As can be seen from the test results of the examples and comparative examples in Table 4, terpene functional resin emulsions can effectively improve the adhesive strength in adhesive compositions. However, the addition ratio needs to be within a suitable range. When the ratio is too low, the improvement effect is not obvious; when the ratio of terpene functional resin emulsions is too high, it affects the film-forming effect of the overall adhesive composition, causing the adhesive strength to tend to decrease. Comparative Example 5 The method for preparing artificial turf includes the following steps: (1) According to the method of Example 6 in the invention patent CN103725227B, Celvolit1510 and Celvolit8481 were selected as the main raw materials to prepare an environmentally friendly water-resistant latex composition. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0073] Comparative Example 6 The method for preparing artificial turf includes the following steps: (1) According to the method of Example 7 in the invention patent CN103725227B, Celvolit1518 and Celvolit8481 were selected as the main raw materials to prepare an environmentally friendly water-resistant latex composition. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0074] Comparative Example 7 The method for preparing artificial turf includes the following steps: (1) According to the method of Example 8 in the invention patent CN103725227B, Celvolit1510 and Celvolit1518 were selected as the main raw materials to prepare an environmentally friendly water-resistant latex composition. (2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; (3) Apply a low-carbon and environmentally friendly adhesive composition to the backing surface of the obtained semi-finished artificial turf, with an adhesive application rate of 1000 kg / m². 2 Then, it is dried to obtain artificial turf.

[0075] Effect Experiment Methods for evaluating the flow properties of adhesive compositions: Specifically, the adhesive composition is prepared according to the formula, and the viscosity of the prepared adhesive composition is tested according to ISO-2555 to detect the change in viscosity of the composition over time in order to evaluate its flow properties.

[0076] Methods for evaluating the penetration properties of adhesive compositions: In the artificial turf industry, the penetration of the adhesive composition directly affects the pull-out force of the innermost single grass fiber in the entire turf. Therefore, the most intuitive way to evaluate the penetration performance of the adhesive composition is to test the pull-out force of the innermost single grass fiber. Specifically, a 20cm×20cm freshly prepared test sample is cut from the artificial turf and placed in an environment with a relative humidity of (65±4)% and a temperature of (20±2)% for 24 hours. The test sample is then placed on an electronic universal testing machine and clamped with clamps perpendicular to the sample direction to extract the innermost single grass fiber. The machine is turned on, and after the grass fiber is completely pulled out, the maximum force value is recorded as the pull-out force value of the grass fiber. The pull-out force value of a single fiber for each sample is based on the average value of 10 sample data.

[0077] Table 5. Viscosity and mechanical properties of single grass fibers of different comparative compositions.

[0078] As can be seen from the test data in Table 5, the flowability of the adhesive composition in the comparative example deteriorated significantly over time, ultimately affecting the pull-out force of the innermost single grass fiber and making large-scale continuous production impossible.

[0079] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A low-carbon and environmentally friendly adhesive composition for artificial turf, characterized in that, It includes the following components by mass percentage: Ethylene-vinyl acetate copolymer emulsion 10-60%, wherein the solid content of the ethylene-vinyl acetate copolymer emulsion is 40-60%; The functional resin emulsion comprises 5-40%, of which the solid content of the functional resin emulsion is 40-60%. Functional additives 0.1-10%; Inorganic fillers 0-80%; The ethylene-vinyl acetate copolymer emulsion contains 65-95% vinyl acetate structural units as the matrix resin ethylene-vinyl acetate copolymer by mass percentage. The functional resin emulsion includes one or more of rosin resin emulsion or terpene resin emulsion; The functional additives consist of defoamers and low-foaming surfactants.

2. The low-carbon and environmentally friendly adhesive composition for artificial turf according to claim 1, characterized in that, The defoamer includes one or more of the following: silicone defoamer, polyether defoamer, mineral oil defoamer, or higher alcohol defoamer.

3. The low-carbon and environmentally friendly adhesive composition for artificial turf according to claim 1 or 2, characterized in that, The defoamer is a mixture of silicone defoamer and higher alcohol defoamer. By mass percentage, silicone defoamer accounts for 50-80% of the total mixture, and the remainder is higher alcohol defoamer.

4. The low-carbon and environmentally friendly adhesive composition for artificial turf according to claim 1, characterized in that, The low-foaming surfactant contains polyethylene oxide segments or polydimethylsiloxane segments.

5. A low-carbon, environmentally friendly adhesive composition for artificial turf according to claim 1 or 4, characterized in that, The low-foaming surfactant includes one or more of nonionic surfactants containing polyethylene oxide segments and anionic surfactants containing polyethylene oxide segments.

6. A low-carbon, environmentally friendly adhesive composition for artificial turf according to any one of claims 1 or 4-5, characterized in that, The low-foaming surfactant includes a mixture of nonionic surfactants containing polyethylene oxide segments and anionic surfactants containing polyethylene oxide segments. By mass percentage, the nonionic surfactants containing polyethylene oxide segments account for 40-70% of the total mixed low-foaming surfactant, with the remainder being anionic surfactants containing polyethylene oxide segments.

7. A low-carbon, environmentally friendly adhesive composition for artificial turf according to claim 5 or 6, characterized in that, The nonionic surfactant containing polyethylene oxide segments includes one or more of the following: polyethylene oxide sorbitan fatty acid ester, polyethylene glycol fatty acid ester, polyethylene oxide-polyoxypropylene-polyoxyethylene triblock copolymer, fatty acid polyoxyethylene ether, or fatty alcohol polyoxyethylene ether; and the anionic surfactant containing polyethylene oxide segments includes one or more of the following: polycarboxylate, sulfonate, phosphate salt, or polyacrylate.

8. The low-carbon and environmentally friendly adhesive composition for artificial turf according to claim 1, characterized in that, The inorganic filler includes one or more of the following: calcium carbonate, mica, barium sulfate, aluminum hydroxide, magnesium hydroxide, talc, wollastonite, glass microspheres, or silica.

9. A method for preparing a low-carbon, environmentally friendly adhesive composition for artificial turf, characterized in that, Includes the following steps: (1) Weigh each raw material according to the low-carbon and environmentally friendly adhesive composition for artificial turf according to any one of claims 1-8; (2) Mix and stir the ethylene-vinyl acetate copolymer emulsion, functional resin emulsion, functional additives and inorganic fillers to obtain the low-carbon and environmentally friendly adhesive composition for artificial turf.

10. An artificial turf, characterized in that, The invention comprises the low-carbon environmentally friendly adhesive composition for artificial turf as described in any one of claims 1-8, artificial grass fibers, and a backing fabric, wherein the artificial grass fibers are tufted on the backing fabric, and the adhesive backing of the backing fabric is coated with the low-carbon environmentally friendly adhesive composition for artificial turf.

11. A method for preparing artificial turf, characterized in that, Includes the following steps: 1) Polyethylene and / or polypropylene are melt-extruded, drawn into fibers, and heat-set to obtain artificial grass fibers; 2) The obtained artificial grass fibers are tufted onto a base fabric to obtain a semi-finished artificial turf; 3) The artificial turf according to any one of claims 1-8 is uniformly coated on the backing surface of the obtained artificial turf semi-finished product with a low-carbon and environmentally friendly adhesive composition, and then dried to obtain the artificial turf.

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