KR102552722B1 - Eco-friendly water-based coating agent for geogrid coating and Manufacturing method of eco-friendly geogrid using the same - Google Patents

Abstract

The present invention relates to a water-based coating agent for geogrid coating and a method for manufacturing an eco-friendly geogrid using the same. It relates to a method for manufacturing an eco-friendly geogrid using the same and an eco-friendly geogrid.

Description

Eco-friendly water-based coating agent for geogrid coating and Manufacturing method of eco-friendly geogrid using the same}

The present invention relates to an eco-friendly water-based coating agent for coating a geogrid that does not cause soil contamination or water pollution by heavy metals such as antimony, and a method for manufacturing an eco-friendly geogrid using the same.

In general, various reinforcing materials for reinforcing soil during civil engineering work have been developed. As a representative civil engineering reinforcing material using fiber materials, geosynthetics manufactured using a polymer synthetic resin solution are widely known. It has been developed into geomembrane, geogrid, geonet, and geocomposite with the characteristics of reinforcement. In the early days, it was mainly used to prevent soil scour and filter, , Recently, it is used for various purposes such as waterproofing, preventing cracks, protecting geotechnical structures, and absorbing shock.

Among the geosynthetics, the geogrid is divided into a plastic geogrid that is rigid and manufactured in the form of a sheet and a textile geogrid that is flexible and manufactured in the form of a fabric. As is well known, the plastic geogrid is a sheet made of polyethylene or polypropylene. It is manufactured by passing through holes and stretching from one side or both sides. Textile geogrid is manufactured by weaving synthetic fibers in a lattice form and coating (covering) a resin solution (polyvinyl chloride, acrylic, soft blue, etc.) on the outside (external surface) It is widely known to do so.

The geogrid is largely divided into two types. One is to form a warp rib by collecting several strands of warp yarn, and to form a weft rib by collecting several strands of weft yarn to form a lattice form using a normal warp knitting machine (Wrap Knitting Machine). It is woven (manufactured) with a net, and one is formed by coating (coating) a coating layer of a resin solution on the outside of the woven (manufactured) net, and the other is a warp rib and a weft rib by gathering several strands of warp and weft yarns, respectively. Forming and weaving (manufacturing) this into a lattice-shaped network by a normal warp knitting machine (Wrap Knitting Machine). The intersection portion is passed through in a zigzag pattern, and the intersection portion is integrally woven by bonding yarns, and a coating layer of a resin solution is coated (coated) on the outside of the woven net.

In addition, since the material formed in the manufacture of geogrid is generally synthetic fiber, the original physical properties, that is, physical properties such as modulus and elongation, are changed by the high temperature thermal history received in the coating process. There are problems such as deviating from the target limit elongation (usually less than 15% is preferable) as a reinforcing material for civil engineering, or reducing tension and elongation due to change in tensile behavior during the tensile test of the product.

A resin solution coating layer is formed to prevent the change in the physical properties of the geogrid itself and furthermore to improve the physical properties of the geogrid. As a material for the resin solution coating layer, a coating solution using PVC (polyvinyl chloride) resin as the main resin was mainly used. After that, when the coating layer, that is, the PVC coating layer, encounters water, there is a problem of change by chemical action, that is, water resistance and chemical resistance are weak, and heavy metals such as antimony leak from the coating layer, causing soil and / or water pollution. There was a problem causing

Therefore, there is an increasing demand for a new environmentally friendly coating agent for forming a geogrid coating layer that can prevent or strengthen the physical properties of a geogrid while having excellent water resistance and chemical resistance and no heavy metal leakage problems.

Korean Registered Patent Publication No. 10-1083263 (Announcement Date 2011.11.14) Korean Registered Patent Publication No. 10-2412989 (Public date 2022.06.24)

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide an eco-friendly coating agent for coating a geogrid, an eco-friendly geogrid using the same, and a method for manufacturing the same.

The aqueous coating agent for geogrid coating of the present invention to solve the above problems includes a binder resin, latex, an inorganic filler, a water repellent agent, a dispersant, and water.

In addition, the present invention relates to a method for manufacturing an eco-friendly geogrid, comprising: a first step of preparing a lattice-shaped grid in which horizontal ribs and vertical ribs intersect with each other as a fabric; A second step of forming a coating layer on the surface of the fabric by supplying and passing the fabric through a coating tank containing an eco-friendly water-based coating agent for coating the geogrid; A third step of drying the coating layer by transferring the fabric on which the coating layer is formed to a heating room and performing multi-stage drying in the heating room; Step 4 of cooling, transferring and stacking the grid on which the coated layer has been dried; and a fifth step of drawing out and winding the stacked grids.

In addition, the present invention relates to an eco-friendly geogrid comprising a coating layer formed of an eco-friendly water-based coating material for coating the geogrid.

The water-based coating agent for geogrid coating of the present invention improves mechanical properties such as tensile force of the geogrid, improves water resistance and chemical resistance, and in particular, does not leak heavy metals such as antimony, while eliminating or minimizing the change in elongation of the geogrid. , It is possible to provide an eco-friendly geogrid that does not contain phthalate-based plasticizers, which are endocrine disruptors, or volatile organic compounds (VOCs) such as toluene and xylene.

1 is a photograph taken of the fabric supply part of the geogrid manufacturing method process of the present invention.
2a and 2b are photographs of the fabric coating part of the geogrid manufacturing method process of the present invention.
3 is a photograph taken of the drying part of the geogrid manufacturing method process of the present invention.
Figure 4 is a picture taken of the cooling transfer and lamination process of the geogrid manufacturing method process of the present invention.
5 is a photograph taken of the draw-out part and the unwinding part of the geogrid manufacturing method process of the present invention.
Figure 6 is a photograph taken of the eco-friendly geogrid of the present invention manufactured.

Hereinafter, the present invention will be described in more detail.

The eco-friendly geogrid of the present invention is manufactured by coating a lattice-shaped grid in which horizontal ribs and vertical ribs cross each other with an eco-friendly aqueous coating agent having a specific composition and composition ratio on the surface to form a coating layer on the surface of the grid.

When explaining the method of manufacturing the eco-friendly geogrid of the present invention in more detail, step 1 of preparing the grid as a fabric; Step 2 of forming a coating layer on the surface of the fabric; A third step of drying the coating layer by performing multi-stage drying on the fabric on which the coating layer is formed; Step 4 of cooling, transferring and stacking the grid on which the coated layer has been dried; And a step 5 of drawing out and winding the stacked grid; can be performed, photos of steps 1 to 5 are shown in FIGS. 1 to 5, and the final product manufactured by performing the above steps A photograph is shown in FIG. 6 .

In addition, the fabric of the first step may use a lattice-shaped grid in which horizontal ribs and vertical ribs cross each other, and the grid may use a grid made of a general material used in the art, preferably polyethylene terephthalate. It may be a grid made of (PET) yarn. After setting the prepared fabric in the fabric supply unit, it is transferred to the second stage fabric coating unit.

Next, the second step is a process of forming a coating layer on the surface of the fabric, and the coating layer is formed by supplying and coating the fabric supplied from the fabric supply unit in the first step to a coating tank containing an eco-friendly water-based coating agent for geogrid coating.

A photograph of the fabric coating portion is shown in FIG. 2a, and FIG. 2b is a photograph of the fabric before and after coating.

Next, step 3 is a process of transferring the fabric on which the coating layer formed in step 2 is formed to a heating room and performing multi-stage drying in the heating room to dry the coating layer to form a cured coating layer. As shown in FIG. 3, the multi-stage drying is preferably performed while the fabric passes through a plurality of heating rods.

Next, step 4 is a process of cooling and transferring and stacking the grid on which the coating layer is formed, and step 5 is a process of drawing out and winding the stacked grid. A photograph of the step 4 is shown in FIG. is shown in Figure 5.

And, after performing the 5-step process, the packaging process may be further performed, and a picture taken of the eco-friendly geogrid that is wound by performing the 5-step process before packaging is shown in FIG. 6.

A detailed description of the two-step eco-friendly water-based coating agent for coating the geogrid used in the formation of the coating layer of the eco-friendly geogrid of the present invention is as follows.

The eco-friendly coating agent for geogrid coating of the present invention is an aqueous coating agent (hereinafter referred to as "coating agent") and includes a binder resin, latex, inorganic filler, water repellent, dispersant and water.

Among the coating composition of the present invention, the binder resin includes an ethylene vinyl acetate resin and an acrylic resin, preferably an ethylene vinyl acetate resin and an acrylic resin in a weight ratio of 1: 3.0 to 5.0, more preferably an ethylene vinyl acetate resin and an acrylic resin in a weight ratio of 1:3.5 to 4.2, and using the weight ratio in the above weight ratio range is advantageous in terms of coating adhesion to the grid and coating properties of the coating agent. In addition, the content of the binder resin in the coating agent is 40 to 65% by weight, preferably 45 to 60% by weight, more preferably 50 to 58% by weight, based on the total weight% of the coating agent, and at this time, the binder resin content is 40% by weight If it is less than 65% by weight, the thickness of the coating layer formed on the grid surface may be uneven and the coating power of the coating agent may be insufficient, and if the binder resin content exceeds 65% by weight, the coating agent viscosity is too high due to excessive use, resulting in poor coating workability. fall, and other components in the coating agent are not evenly dispersed in the coating agent, so the effect of improving the physical properties of the manufactured geogrid may be insufficient.

Next, as the latex in the composition of the coating agent, a general latex used in the art may be used, and preferably, a silonic acid-based latex may be used. The content of the latex in the coating agent may be 15 to 25% by weight, preferably 16 to 22% by weight, more preferably 17 to 20% by weight, based on the total weight% of the coating agent.

In addition, the siloxane-based latex is a composition containing 2,3-dimethyl-1,3-butadiene, 2,2-dinitropropyl acrylate, methacrylonitrile, vinyl acetic acid, siloxane, a nonionic emulsifier and a crosslinking agent It includes a polymer prepared by free radical emulsion polymerization, preferably 10 to 15% by weight of 2,3-dimethyl-1,3-butadiene, 10 to 20% by weight of methacrylonitrile, and 8 to 15% by weight of vinyl acetic acid. , 15 to 20% by weight of siloxane, 1 to 5% by weight of anionic emulsifier, 3 to 8% by weight of a crosslinking agent, and the remaining balance of 2,2-dinitropropyl acrylate in the total weight% by free radical emulsion polymerization The prepared polymer is more preferably 11.5 to 14.5% by weight of 2,3-dimethyl-1,3-butadiene, 12 to 16% by weight of methacrylonitrile, 12 to 14% by weight of vinyl acetic acid, and 16 to 19% by weight of siloxane. %, a polymer prepared by free radical emulsion polymerization of a composition containing 1.5 to 3.5% by weight of anionic emulsifier, 3.5 to 7.5% by weight of a crosslinking agent, and the remaining balance of 2,2-dinitropropyl acrylate out of the total weight% can In this case, the composition may further include a catalyst.

In addition, the silonic acid used in preparing the siloxane-based latex may include at least one selected from dodecamethylcyclohexasiloxane, trimethyltriphenylcyclotrisiloxane, tetramethyl tetraphenylcyclotetrasiloxane, and octaphenylcyclotetrasiloxane, Preferably, it may include at least one selected from trimethyltriphenylcyclotrisiloxane, tetramethyl tetraphenylcyclotetrasiloxane, and octaphenylcyclotetrasiloxane, and more preferably trimethyltriphenylcyclotrisiloxane and tetramethyl tetraphenylcyclo. It may include at least one selected from tetrasiloxane.

In addition, the nonionic emulsifier used in the manufacture of siloxane-based latex may include polyoxy (C ₄ ~ C ₆ alkylene) (C ₁ ~ C ₃ alkyl) ether, preferably polyoxy (C ₄ ~ C ₅ alkylene) (C ₁ ~ C ₂ alkyl) ether may be included, and more preferably polyoxybutylene methyl ether and/or polyoxybutylene ethyl ether may be included.

In addition, the crosslinking agent used in preparing the siloxane-based latex is one selected from trimethoxymethylsilane, triethoxyphenylsilane, tetramethoxysilane, tetraethoxysilane, tetra-n-propoxy silane and tetrabutoxy silane. It may include the above, and preferably may include at least one selected from trimethoxymethylsilane, triethoxyphenylsilane, tetramethoxysilane, and tetraethoxysilane.

In addition, the silonic acid-based latex may have an average particle size of 0.100 to 0.200 μm, preferably about 0.120 to 0.160 μm, and a weight average molecular weight of 85.000 g/mole or more, preferably a weight average molecular weight of 90,000 to 150,000 g/mole. .

Next, the inorganic filler in the composition of the coating agent serves to increase the friction resistance and impact resistance of the coating layer, and may include at least one selected from silica, calcium carbonate and aluminum hydroxide, preferably silica and calcium carbonate. It may include one or more selected from among. In addition, the content of the inorganic filler in the coating agent may be 5 to 10% by weight, preferably 5.5 to 8.5% by weight, more preferably 5.5 to 7.5% by weight, based on the total weight% of the coating agent. At this time, the inorganic filler content If the amount is less than 5% by weight, the effect of increasing the friction resistance and impact resistance of the coating layer may be insignificant due to the small amount used, and if it exceeds 10% by weight, the coating workability of the coating agent and the coating adhesion to the grid may be deteriorated due to excessive use. Since there may be a problem with dropping, it is recommended to use it within the above range.

Next, the dispersant in the coating composition serves to evenly disperse the latex and inorganic filler in the binder resin and to dissolve the coating composition well in water, and the dispersant is sodium bis (2-ethylhexyl) It may contain at least one selected from sulfosuccinate, sodium lauryl sulfate, sodium isopropyl naphthalene sulfonate, sodium bis(tridecyl) sulfosuccinate, disodium lauryl ether sulfosuccinate and ammonium stearate. It may preferably contain at least one selected from sodium lauryl sulfate, sodium isopropyl naphthalene sulfonate, sodium bis(tridecyl) sulfosuccinate, and disodium lauryl ether sulfosuccinate, more preferably Preferably, at least one selected from sodium bis(tridecyl) sulfosuccinate and disodium lauryl ether sulfosuccinate may be included. In addition, the content of the dispersant in the coating agent is preferably 0.1 to 1.0% by weight, preferably 0.4 to 1.0% by weight, more preferably 0.5 to 0.8% by weight, based on the total weight% of the coating agent. At this time, if the content of the dispersant is less than 0.1% by weight, the amount of the dispersant is too small and the dispersing effect of the composition is insufficient, so that the surface of the coating layer formed on the grid may have an uneven problem. Since there may be a problem of poor adhesion of the coating layer, it is good to use it within the above range.

In addition, the coating agent of the present invention may further include additives such as pigments, viscosity enhancers, diluents, and stabilizers in addition to binder resins, latex, inorganic fillers, and dispersants.

The coating agent of the present invention described above may include water as a solvent in addition to the composition described above, and the content of water is the remaining amount excluding binder resin, latex, inorganic filler, dispersant and / or additives out of the total weight of the coating agent.

The geogrid of the present invention, in which the coating layer is formed with the coating agent described above, has no change in elongation after construction, excellent mechanical properties such as tensile force, excellent water resistance and chemical resistance, and no leakage of heavy metals such as antimony. Since it does not contain phthalate-based plasticizers or volatile organic compounds (VOCs) such as toluene and xylene, it is possible to provide an environmentally friendly geogrid. The geogrid of the present invention can be applied as an eco-friendly reinforcing material for various civil engineering works such as retaining wall reinforcement, slope reinforcement, and soft ground reinforcement.

Hereinafter, the present invention will be described in more detail through examples, but the following examples are not intended to limit the scope of the present invention, which should be interpreted to aid understanding of the present invention.

[Example]

Example 1: Preparation of eco-friendly water-based coating agent for geogrid coating

(1) Manufacture of siloxane-based latex

2,3-dimethyl-1,3-butadiene 13.2% by weight, methacrylonitrile 14.5% by weight, vinyl acetic acid 13.4% by weight, tetramethyl tetraphenylcyclotetrasiloxane 18.2% by weight, polyoxybutylenemethyl as a nonionic emulsifier Siloxane-based latex polymer was prepared by free radical emulsion polymerization of a mixture of 1.9 wt% of ether, 4.8 wt% of tetraethoxysilane as a crosslinking agent, and 100 wt% of 2,2-dinitropropyl acrylate, the remaining balance of which was mixed. The prepared siloxane-based latex had an average particle size of about 0.140 to 150 μm and a weight average molecular weight of 102,000 to 108,000 g/mole.

(2) Manufacture of eco-friendly water-based coating agent

50.8% by weight of a binder resin in which ethylene vinyl acetate resin and acrylic resin were mixed at a weight ratio of 1: 3.8, 18.5% by weight of the previously prepared siloxane-based latex, 5.8% by weight of calcium carbonate as an inorganic filler, disodium lauryl ether sulfosacite as a dispersing agent After mixing 0.7% by weight of cinate, 0.2% by weight of black pigment and water, and stirring at 50 ° C., an eco-friendly water-based coating agent was prepared.

Comparative Example 1

An eco-friendly water-based coating agent was prepared using the siloxane-based latex, binder resin, inorganic filler, dispersant, and pigment prepared in Example 1, but an acrylic resin was used alone as the binder resin, and the eco-friendly composition shown in Table 1 below was used. An aqueous coating was prepared.

Examples 2 to 3 and Comparative Examples 2 to 3

An eco-friendly water-based coating agent was prepared using the siloxane-based latex, binder resin, inorganic filler, dispersant, and pigment prepared in Example 1. Comparative Examples 1 to 3 were carried out, respectively.

division
(weight%) bookbinder
profit Siloxane system
latex weapon
filler dispersant Black color
pigment water Example 1 54.2 18.7 5.8 0.7 0.2 of 100% by weight
remain
balance Example 2 45.4 19.2 6.2 0.7 0.21 Example 3 59.5 16.3 5.0 0.7 0.19 Comparative Example 1 54.2 18.7 5.8 0.7 0.20 Comparative Example 2 38.4 19.2 6.2 0.6 0.18 Comparative Example 3 66.1 12.4 5.0 0.8 0.23

Manufacturing Example 1: Manufacturing of eco-friendly geogrid

A lattice-shaped grid in which horizontal ribs and vertical ribs crossed each other was prepared as a fabric. At this time, the horizontal rib and the vertical rib are composed of polyethylene terephthalate (PET) yarn. After installing the prepared grid fabric in the fabric supply unit (see FIG. 1), the grid fabric was supplied and passed through the coating tank of the fabric coating unit to form a coating layer on the surface of the fabric (see FIGS. 2a and 2b). At this time, the coating solution in the coating bath was the eco-friendly water-based coating agent of Example 1.

Next, the fabric on which the coating layer was formed was transferred to a heating room, and multi-stage drying was performed while passing through a plurality of heating rods in the heating room to dry the coating layer (see FIG. 3).

Next, after cooling and transferring and stacking the grid on which the dried coating layer was formed (see FIG. 4), the stacked grid was drawn out and wound to manufacture an eco-friendly geogrid (see FIGS. 5 and 6).

Preparation Examples 2 to 3 and Comparative Preparation Examples 1 to 3: Manufacturing of eco-friendly geogrid

An eco-friendly geogrid was prepared in the same manner and conditions as in Preparation Example 1, but as an eco-friendly water-based coating agent, using the coating agents of Examples 2 to 3 and Comparative Examples 1 to 3 instead of the coating agent of Example 1, an eco-friendly geogrid was prepared in Table 2 below. were prepared separately.

division Eco-friendly water-based coating agent Preparation Example 1 Example 1 Preparation Example 2 Example 2 Preparation Example 3 Example 3 Comparative Preparation Example 1 Comparative Example 1 Comparative Preparation Example 2 Comparative Example 2 Comparative Preparation Example 3 Comparative Example 3

Experimental Example 1: Antimony Elution Experiment

Antimony elution of the eco-friendly geogrids prepared in Preparation Examples 1 to 3 was measured, and the results are shown in Table 3 below. In the antimony elution experiment, 1L of distilled water, 3.2 mg of calcium chloride (CaCl2) and 5g of the geogrid of Preparation Example 1, Preparation Example 2 or Preparation Example 3 were put in a 1L round flask, and sodium hydroxide (NaOH) was added to the pH to 8 Titrated. Then, after maintaining at room temperature (25 ℃ for 24 hours), the fabric was taken out, and the elution amount of antimony was measured using ICP-MS (Perkin Elmer, NexION 300X).

division Antimony elution amount (ppb) Preparation Example 1 0 Preparation Example 2 0 Preparation Example 3 0

As a result of the antimony elution experiment, it was confirmed that all of the geogrids prepared in Preparation Examples 1 to 3 were eco-friendly products in which antimony was not eluted.

Experimental Example 2: Measurement of physical properties of geogrid

Odor, water resistance, alkali resistance, relative tensile strength and relative tensile elongation for each of the geogrids prepared in Preparation Examples 1 to 3 and Comparative Preparation Examples 1 to 3 were measured by the following method, and the results are shown in Table 4 below. .

(1) Odor: Tested according to KS M 5000 test method 2041.

(2) Water resistance: Tested according to KS M IOS 2812-1 Test Method 1.

(3) Alkali resistance: Tested according to KS M IOS 2812-1 Test Method 1.

In addition, the odor, water resistance and alkali resistance evaluation results were indicated as ○: excellent, △: normal, and X: poor.

(4) Relative tensile strength and relative tensile elongation: After testing in accordance with KS K ISO 10319 to measure tensile strength (kN / m) and tensile elongation (%), the tensile strength and tensile elongation of the control group are 100% based , The measured values of tensile strength and tensile elongation of the geogrid of Preparation Example and Comparative Preparation Example were calculated and shown.

At this time, the control group is the grid fabric before forming the coating layer on the surface of the fabric in Preparation Example 1.

(5) Coatability

Coatability was evaluated by observing with the naked eye whether or not the coating layer was evenly formed on the surface of the grid with a certain thickness, and it was indicated as ○: excellent, △: average, and X: poor.

division smell water resistance alkali resistance opponent
tensile strength opponent
tensile elongation coating property control group △ △ △ 100% 100% - Preparation Example 1 ○ ○ ○ 123.4% 81.2% ○ Preparation Example 2 ○ ○ ○ 117.3% 86.4% ○ Preparation Example 3 ○ ○ ○ 124.7% 82.5% ○ Comparative Manufacturing Example 1 ○ ○ △ 110.6% 93.7% ○ Comparative Manufacturing Example 2 ○ ○ △ 105.5% 95.4% △ Comparative Preparation Example 3 ○ ○ ○ 130.1% 78.9% X

Looking at the physical property measurement results in Table 3, both Preparation Examples 1 to 3 and Comparative Preparation Examples 1 to 3 received excellent odor evaluation and water resistance evaluation when compared to the control group.

In particular, all of Preparation Examples 1 to 3 showed a significant increase in tensile strength compared to the control group, and it was confirmed that the relative tensile elongation was greatly reduced, so that the elongation change rate of the geogrid could be greatly reduced.

On the other hand, in the case of Comparative Preparation Example 1 in which the coating layer was formed with a coating material using only an acrylic resin as the binder resin and Comparative Preparation Example 2 in which the coating layer was formed with a coating material using less than 40% by weight of the binder resin, Preparation Examples 1 to 3 Compared to , the rate of increase in relative tensile strength was greatly reduced, and the decrease in relative tensile elongation was particularly small, which means that the geogrid is highly likely to shrink due to the external environment after constructing the geogrid, which means that the coating layer is The adhesion rate and adhesion stability to the surface are poor, and the coating layer is not formed evenly.

In addition, in the case of Comparative Preparation Example 3 in which the coating layer was formed with a coating agent containing 66.1% by weight of more than 65% by weight of binder resin, there was a problem of high relative tensile strength, low relative tensile elongation, or poor coating property.

Through the above examples and experimental examples, the water-based coating agent for geogrid coating of the present invention uses water as a solvent, and does not contain phthalate-based plasticizers or volatile organic compounds (VOCs) such as toluene and xylene, which are endocrine disruptors. In addition, it is an eco-friendly material that does not leak heavy metals such as antimony, but is applied as a coating layer of the geogrid, so that there is no change in elongation after construction, mechanical properties such as tensile strength, and water resistance. It is possible to manufacture a geogrid with excellent chemical resistance. I was able to confirm. The geogrid of the present invention can be applied as an eco-friendly reinforcing material for various civil engineering works such as retaining wall reinforcement, slope reinforcement, and soft ground reinforcement.

Claims (3)

Contains binder resin, latex, inorganic filler, dispersant and water,
The binder resin includes an ethylene vinyl acetate resin and an acrylic resin in a weight ratio of 1: 3.0 to 5.0,
The latex includes a siloxane-based latex,
The inorganic filler includes at least one selected from silica, calcium carbonate and aluminum hydroxide,
The dispersant is sodium bis(2-ethylhexyl)sulfosuccinate, sodium lauryl sulfate, sodium isopropylnaphthalenesulfonate, sodium bis(tridecyl)sulfosuccinate, disodium laurylethersulfosuccinate and ammonium An eco-friendly water-based coating agent for geogrid coating comprising at least one selected from stearates.
The method of claim 1, wherein 40 to 65% by weight of the binder resin, 15 to 25% by weight of latex, 5 to 10% by weight of inorganic filler, 0.1 to 1.0% by weight of dispersant, and 100% by weight of the remaining water are included. Eco-friendly water-based coating agent for geogrid coating.
A first step of preparing a lattice-shaped grid in which horizontal ribs and vertical ribs cross each other as a fabric;
A second step of forming a coating layer on the surface of the fabric by supplying and passing the fabric through a coating tank containing the eco-friendly water-based coating agent of claim 1 or 2;
A third step of drying the coating layer by transferring the fabric on which the coating layer is formed to a heating room and performing multi-stage drying in the heating room;
Step 4 of cooling, transferring and stacking the grid on which the coated layer has been dried; and
Step 5 of drawing out and winding the stacked grid; performing a process including,
The multi-stage drying method of manufacturing an eco-friendly geogrid, characterized in that the fabric is performed while passing through a plurality of heating rods.

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