KR102659156B1 - Hybrid coating resin and flooring embossing construction method using it - Google Patents

Abstract

The present invention relates to a coating resin used in flooring embossing construction, and more specifically, to an isocyanate mixture obtained by mixing aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, a base material synthesized from polyol, chain extender and plasticizer, and polyaspartic ester. A hybrid coating resin that prevents chip peeling by coating the upper surface of the chip layer using a coating resin made by mixing a curing agent made of polyol, plasticizer, silane coupling agent, and formamidine-based ultraviolet absorber in a predetermined ratio, and flooring embossing using the same. It's about method.
The present invention is a subject of synthesizing an isocyanate mixture of aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, polyol, chain extender and plasticizer, polyaspartic ester polyol, It is characterized by mixing a plasticizer, a silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), and a curing agent synthesized from a formamidine-based ultraviolet absorber in a predetermined ratio.

Description

Hybrid coating resin and flooring embossing construction method using the same {HYBRID COATING RESIN AND FLOORING EMBOSSING CONSTRUCTION METHOD USING IT}

The present invention relates to a coating resin used in flooring embossing construction, and more specifically, to an isocyanate mixture obtained by mixing aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, a base material synthesized from polyol, chain extender and plasticizer, and polyaspartic ester. A hybrid coating resin that prevents chip peeling by coating the upper surface of the chip layer using a coating resin made by mixing a curing agent made of polyol, plasticizer, silane coupling agent, and formamidine-based ultraviolet absorber in a predetermined ratio, and flooring embossing using the same. It's about method.

Generally, the method of applying emboss to flooring is the spray method, which uses a spray to apply a mixture of resin and chips to the flooring to form emboss, and the topping method, which involves applying resin without using a spray and sprinkling chips on it to harden it. I have done it.

At this time, the spray method has a problem with the mixture scattering due to the wind pressure of the spray itself, and the topping method has a problem with chips easily peeling off from the resin.

Meanwhile, in actual sites, there is a tendency to prefer the spray method, which is easy to work with, rather than the topping method, where chips easily peel off. However, the spray method has a problem in that it does not show uniform shock absorption because the chips scatter and the emboss is not formed consistently.

Accordingly, Domestic Patent No. 10-1877455 (hereinafter referred to as prior art) has been disclosed as prior art to solve this problem.

The prior art relates to an athletics track construction method, and the athletics track construction method according to an embodiment of the present invention includes (a) pouring asphalt concrete on the ground to form an asphalt layer 10 (S100), (b) Step of forming a mat layer 21 by placing and adhering a rubber mat on the asphalt layer 10 (S200), (c) applying a sealing material 31 on the mat layer 21 to form a sealing layer ( 30) sealing the pores 21 of the rubber mat (S300), (d) applying a liquid first polyurethane on the sealing layer 30 to form a liquid polyurethane layer 40. It includes a step (S400), and (e) before the liquid polyurethane layer 40 is cured, chip topping by sprinkling the first EPDM chip 50 on the polyurethane layer 40 (S500).

The prior art was able to form an emboss of a certain shape by topping the chip, but it still did not solve the problem of the topping method, which was that the chip was not properly fixed and peeled off.

Therefore, the adhesive resin is applied to the flooring material, and chips are placed on top of the adhesive resin to form a chip layer. When the adhesive resin hardens, the unfixed chips are removed, the coating resin is applied, and the upper surface of the chip layer is coated. The need for a hybrid coating resin that prevents peeling and a flooring embossing method using it has emerged.

Domestic Registered Patent No. 10-1877455 (2018. 07. 13.)

The present invention is intended to solve the above problems, and its purpose is to relate to a coating resin used in flooring embossing construction. More specifically, it relates to an isocyanate mixture in which aromatic isocyanate and aliphatic isocyanate are mixed in a predetermined ratio, polyol, The upper surface of the chip layer is coated using a coating resin made by mixing a chain extender and a plasticizer and a curing agent composed of a polyaspartic ester polyol, a plasticizer, a silane coupling agent, and a formamidine-based ultraviolet absorber in a predetermined ratio. The goal is to provide a hybrid coating resin that prevents chip peeling.

In addition, another object of the present invention is to apply adhesive resin to a flooring material, place chips on top of the adhesive resin to form a chip layer, and when the adhesive resin hardens, remove the unfixed chips and then apply the coating resin. The aim is to provide a flooring embossing method using a hybrid coating resin that coats the upper surface of the chip layer to prevent peeling.

In addition, another object of the present invention is to provide a flooring embossing method using a hybrid coating resin that increases shock absorption and slip resistance through the hybrid coating resin applied to the upper surface of the chip layer.

In order to achieve the above-described problem, the hybrid coating resin of the present invention is a mixture of aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, a polyol, a chain extender, and a plasticizer. It is characterized by mixing a curing agent synthesized from polyaspartic ester polyol, plasticizer, silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), and formamidine-based ultraviolet absorber in a predetermined ratio.

In addition, the main ingredient of the hybrid coating resin 41 is 10 to 20% by weight of an isocyanate mixture, 60 to 70% by weight of ether polyol, 0.5 to 2% by weight of a linear chain extender, and 10 to 20% by weight of a plasticizer, mixed by heating, using a stirrer. It is characterized by evenly dispersing and synthesizing using .

In addition, the isocyanate mixture is an aromatic isocyanate including TDI (2,4-toluene-di-isocyanate), MDI (4,4-di-phenyl-methane-di-isocyanate), or XDI (Xylene-di-isocyanate). It is characterized in that 5 to 7 parts by weight of any one selected from aliphatic isocyanates including HDI (1,6-Hexanmethylene Diisocyanate) or IPDI (Isophorone Diisocyanate) is mixed with 1 part by weight of any one selected.

In addition, the curing agent of the hybrid coating resin 41 includes 70 to 90% by weight of polyaspartic ester polyol, 8 to 28% by weight of plasticizer, 0.1 to 0.3% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), and It is characterized by synthesizing 1 to 2% by weight of a formamidine-based ultraviolet absorber.

In addition, the hybrid coating resin 41 is characterized by mixing 200 parts by weight to 400 parts by weight of the base material with respect to 100 parts by weight of the curing agent.

In addition, the flooring embossing construction method using the hybrid coating resin formulated as described above involves constructing an adhesive urethane resin (21) on the upper part of the flooring material (10), and embossing a urethane chip (31) containing a urethane chip or an EPDM chip for adhesion. It is placed on the urethane resin 21, and when a predetermined time elapses, the adhesive urethane resin 21 hardens to form an adhesive layer 20, and the embossed chip 31 placed on the adhesive urethane resin 21 is It is fixed to the adhesive layer 20 to form a chip layer 30, the unfixed embossed chip 31 on the top of the chip layer 30 is removed, and the hybrid coating resin 41 is applied on the chip layer 30 to form a chip layer ( 30) It is characterized by coating the surface.

In addition, the adhesive urethane resin (21) is a base material synthesized from isocyanate, polyol, chain extender, and plasticizer, and a curing agent synthesized from chain extender, polyol, plasticizer, silane coupling agent, filler, and pigment mixed in a predetermined ratio. It is characterized by one thing.

In addition, the main ingredient of the adhesive urethane resin (21) is 15 to 25% by weight of isocyanate, 50 to 60% by weight of polyol, 0.5 to 5% by weight of chain extender, and 10 to 20% by weight of plasticizer, mixed by heating, using a stirrer. It is characterized by evenly dispersing and synthesizing.

In addition, the isocyanate mixed with the main ingredient of the adhesive urethane resin 21 is TDI (2,4-toluene-di-isocyanate) and MDI (4,4-di-phenyl-methane-di-isocyanate), which have excellent adhesive strength and durability. ) or aromatic isocyanate including XDI (Xylene-di-isocyanate).

In addition, the curing agent of the adhesive urethane resin 21 includes 1 to 2% by weight of an amine chain extender, 30 to 47% by weight of polyol, 10 to 20% by weight of a plasticizer, and 0.1 to 0.3% by weight of a silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane). It is characterized by synthesizing 40 to 50% by weight of filler, 1 to 3% by weight of pigment, and 0.5 to 1% by weight of catalyst.

In addition, the thickness of the adhesive urethane resin 21 applied on top of the flooring material 10 is 0.6 to 0.8 mm, and the thickness of the chip layer 30 formed by the embossed chip 31 topping the urethane resin 21 is 2. to 3 mm, and the thickness of the coating layer 40 formed by the hybrid coating resin 41 is 0.4 mm to 0.8 mm.

According to the present invention, an isocyanate mixture of aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, a base material synthesized from polyol, chain extender and plasticizer, polyaspartic ester polyol, plasticizer, silane coupling agent and formamidine-based ultraviolet absorber. Coating the upper surface of the chip layer using a coating resin prepared by mixing synthesized hardeners in a predetermined ratio has the effect of preventing chip peeling.

In addition, the adhesive resin is applied to the flooring material, and chips are placed on top of the adhesive resin to form a chip layer. When the adhesive resin hardens, the unfixed chips are removed, the coating resin is applied, and the upper surface of the chip layer is coated. It has the effect of preventing peeling.

In addition, the hybrid coating resin applied to the upper surface of the chip layer has the effect of increasing shock absorption and slip resistance.

Figure 1 is a flow chart of a hybrid coating resin and a flooring embossing construction method using the same according to an embodiment of the present invention.
Figure 2 is a conceptual diagram of a hybrid coating resin and a flooring embossing construction method using the same according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, the hybrid coating resin of a preferred embodiment of the present invention and the flooring embossing method using the same will be described in detail.

The terms used herein are not intended to limit the technology described in this document to specific embodiments, but are preferably understood to include various modifications, equivalents, and substitutes for the embodiments.

Terms such as 'first' or 'second' used to describe the present invention are intended to distinguish one component from other components of similar form, and the scope of rights is not limited by the use of these terms. .

When explaining the present invention, unless otherwise specified, the expression ‘A or B’ may be used selectively between A and B, but it is preferable to understand that A and B may be used together.

In the drawings used to explain the present invention, some of the depicted expressions may be exaggerated or omitted so that the features of the invention can be easily understood, and this does not limit the specific embodiment of the invention.

In addition, when a specific direction (up, down, left, right, vertical, horizontal, inside, outside, etc.) is specified in the description of the present invention, such description is limited to facilitating explanation and explaining specific examples to aid understanding. It should be understood that this does not limit or bind a specific configuration or specific embodiment.

As shown in Figures 1 and 2, the flooring embossing method (1) using the hybrid coating resin of the present invention involves constructing an adhesive urethane resin (21) on the upper part of the flooring (10) and applying a urethane chip or EPDM chip. The embossed chip 31 containing the adhesive urethane resin 21 is placed on top of the adhesive urethane resin 21, and when a predetermined time elapses, the adhesive urethane resin 21 hardens to form an adhesive layer 20, and the adhesive urethane resin 21 ) The embossed chip 31 is fixed to the adhesive layer 20 to form a chip layer 30, and after removing the unfixed embossed chip 31 on the top of the chip layer 30, the hybrid coating resin 41 is applied. The coating layer 40 is formed by applying it on the top of the chip layer 30 and coating the surface of the chip layer 30.

At this time, the thickness of the adhesive layer 20 made of the adhesive urethane resin 21 on the flooring 10 is 0.6 to 0.8 mm, and the adhesive layer 20 made of the adhesive urethane resin 21 is laid or topped. The thickness of the chip layer 30 made of the embossed chip 31 may be 2 to 3 mm.

In addition, the adhesive urethane resin 21 is cured for 12 to 15 hours so that the embossing chip 31 can be stably fixed, but this may vary depending on the construction environment including season, temperature, humidity, or weather. You can.

In addition, when the thickness of the coating layer 40 is less than 0.4 mm, it is difficult to completely cover the chip, which reduces adhesion and durability, and when the coating layer exceeds 0.8 mm, the material cost increases significantly, which reduces economic efficiency and reduces shock absorption and slip resistance. Since this phenomenon may occur, it is preferable to coat the chip layer 30 using a roller so that the thickness of the coating layer 40 is 0.4 to 0.8 mm.

The adhesive urethane resin 21 is a mixture of a base material synthesized from isocyanate, polyol, chain extender, and plasticizer, and a curing agent synthesized from chain extender, polyol, plasticizer, silane coupling agent, filler, and pigment in a predetermined ratio. .

Specifically, the main ingredient of the adhesive urethane resin (21) is 15 to 25% by weight of isocyanate, 50 to 60% by weight of polyol, 0.5 to 5% by weight of chain extender, and 10 to 20% by weight of plasticizer, mixed by heating, using a stirrer. It was synthesized by evenly dispersing it using .

At this time, the isocyanate added to the base of the adhesive urethane resin 21 is TDI (2,4-toluene-di-isocyanate), MDI (4,4-di-phenyl-methane-di-isocyanate), which has excellent adhesive strength and durability. ) or aromatic isocyanate, including XDI (Xylene-di-isocyanate), is preferably used.

In addition, the polyol added to the base of the adhesive urethane resin 21 is preferably a polyether polyol with a molecular weight of 2000 to 5000, which has excellent water resistance and flexibility.

In addition, the chain extender added to the base of the adhesive urethane resin (21) is a branched chain extender such as butylene glycol (1,3-Butylene Glycol) or GP-280 to increase adhesive strength and physical properties. It is desirable to use .

In addition, the plasticizer added to the base of the adhesive urethane resin 21 is preferably a non-phthalate type such as DOTP (Di-octyl terephthlate), epoxidized soybean oil, or cyclohexene ester compound. By using a plasticizer, the user can be prevented from being exposed to environmental hormones and the flexibility of the adhesive urethane resin 21 can be increased.

That is, the main ingredient of the adhesive urethane resin (21) of the present invention is 15 to 25% by weight of aromatic isocyanate selected from the above, 50 to 60% by weight of polyether polyol, and a branched structure. It is synthesized by heating and mixing 0.5 to 5% by weight of a chain extender and 10 to 20% by weight of a non-phthalate plasticizer. Ideally, to increase the adhesive strength and flexibility of the adhesive urethane resin (21), NCO% (isocyanate content) ) is preferably evaporated to 4.5 to 6.5%.

At this time, when the NCO% (isocyanate content) of the main body of the adhesive urethane resin (21) synthesized as described above is less than 4.5%, the flexibility increases but the adhesive strength decreases, so that it is placed or topped on the adhesive urethane resin (21). The embossed chip 31 may be easily peeled off because it is not properly adhered. If the NCO% (isocyanate content) exceeds 6.5%, the adhesive strength increases, but there is a problem in that flexibility decreases and shock absorbency decreases.

The curing agent of the adhesive urethane resin (21) is 1 to 2% by weight of amine chain extender, 30 to 47% by weight of polyol, 10 to 20% by weight of plasticizer, and 0.1 to 0.3% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane). , 40 to 50% by weight of filler, 1 to 3% by weight of pigment, and 0.5 to 1% by weight of catalyst are synthesized, and are synthesized by stirring with a stirrer at a speed of 140 to 160 rpm for 1 to 2 hours to ensure even dispersion when synthesizing the curing agent. .

At this time, the amine-based chain extender added to the curing agent of the adhesive urethane resin (21) reacts with the main agent to improve adhesive strength and physical properties. It reacts easily even at low temperatures and can be applied without problems in the curing agent composition. Excellent chemical properties.

At this time, any one selected from the group including diethyl toluene diamine, hexamethylene diamine, or m-phenylene diamine may be used as the amine chain extender. .

In addition, the polyol added to the curing agent of the adhesive urethane resin 21 is preferably a polyether polyol with a molecular weight of 2000 to 5000, which has excellent water resistance and flexibility.

In addition, the plasticizer added to the curing agent of the adhesive urethane resin 21 is preferably a non-phthalate type such as DOTP (Di-octyl terephthlate), epoxidized soybean oil, or cyclohexene ester compound. By using a plasticizer, the user can be prevented from being exposed to environmental hormones and the flexibility of the adhesive urethane resin 21 can be increased.

In addition, the silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane) added to the curing agent of the adhesive urethane resin (21) has the chemical formula CH ₂ -CHCH ₂ O(CH ₂ ) ₃ Si(OCH ₃ ) ₃ and is used for adhesive purposes. It can increase the adhesive strength of the urethane resin (21) and allows the base material and hardener to react evenly.

In addition, the filler added to the curing agent of the adhesive urethane resin 21 includes calcium carbonate, and may specifically be a mixture of ground calcium carbonate and light calcium carbonate.

Ground calcium carbonate is a type of filler that provides elasticity. It is manufactured through physical processing and has excellent physical properties. It is preferable to use ground calcium carbonate ground by wet grinding or dry grinding. Light calcium carbonate It imparts thixotropy, which does not deform its shape unless a certain force is applied from the outside. It is desirable to use spindle-shaped hard calcium carbonate with a large surface area to show high thixotropy.

In addition, the pigment added to the curing agent of the adhesive urethane resin 21 is a material that determines the color of the adhesive urethane resin 21. In particular, when using a white pigment, titanium dioxide (titanium dioxide), which has a large oxidizing power in the pigment, is used. Antibacterial action can also be imparted by adding more TiO ₂ ).

In addition, the catalyst added to the curing agent of the adhesive urethane resin 21 is bismuth octoate, bismuth naphthenate, bismuth propionate, and bismuth maleinate. It is characterized in that it is at least one bismuth-based compound selected from the group consisting of bismuth neodecanoate and bismuth neopentanoate.

200 to 400 parts by weight of the curing agent of the adhesive urethane resin (21) is reacted with respect to 100 parts by weight of the main component of the adhesive urethane resin (21) prepared as described above, and is used to form the adhesive layer (20) of the present invention. It is possible to synthesize the adhesive urethane resin (21).

At this time, when synthesizing the adhesive urethane resin 21, if less than 200 parts by weight of the curing agent is added to 100 parts by weight of the base material, the adhesive strength increases, but the cost consumed per working area increases and the curing speed is slow. If the hardener is added in excess of 400 parts by weight per 100 parts by weight of the base material, the cost per working area is reduced, but the adhesive strength decreases and the curing speed becomes faster, which reduces workability. It is preferable to synthesize the urethane resin for adhesive (21) by reacting 200 to 400 parts by weight of the curing agent with respect to 100 parts by weight of the base material.

The embossed chip 31 is an even mixture of urethane chips and EPDM chips by stirring. It is preferable to use a mixture of 2 to 5 parts by weight of EPDM chips per 1 part by weight of urethane chips, and 1 part by weight of urethane chips. If EPDM chips are mixed in a ratio of less than 2 parts by weight, there is a problem of reduced weather resistance, and if EPDM chips are mixed in a ratio of more than 5 parts by weight to 1 part by weight of urethane chips, weather resistance improves, but the construction cost increases. Since there is a problem of excessive rise compared to urethane chips, the mixing ratio of EPDM chips to urethane chips is preferably 1:2 to 1:5.

The hybrid coating resin 41 is composed of an isocyanate mixture of aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, a polyol and a plasticizer synthesized, polyaspartic ester polyol, It is characterized by mixing a plasticizer, a silane coupling agent, and a curing agent synthesized from a formamidine-based ultraviolet absorber in a predetermined ratio.

At this time, the main ingredient of the hybrid coating resin 41 is 10 to 20% isocyanate mixture, 60 to 70% by weight of ether polyol, 0.5 to 2% by weight of linear structure chain extender, and 10 to 20% by weight of plasticizer at a temperature of 80 to 90°C. Heat and mix for 4 to 6 hours, and evenly disperse and synthesize using a stirrer.

At this time, when the NCO% (isocyanate content) of the hybrid coating resin 41 synthesized as described above is less than 4.5%, there is a problem that the flexibility increases but the physical properties decrease, and the NCO% (isocyanate content) is less than 6.5%. If it is exceeded, the hardness increases and shock absorbency decreases, so the NCO% (isocyanate content) of the hybrid coating resin 41 is preferably 4.5 to 6.5%.

In addition, the isocyanate mixture added to the main component of the hybrid coating resin 41 is TDI (2,4-toluene-di-isocyanate), MDI (4,4-di-phenyl-methane-di-isocyanate), or 5 to 7 parts by weight of any one selected from aliphatic isocyanates including HDI (1,6-Hexanmethylene Diisocyanate) or IPDI (Isophorone Diisocyanate) per 1 part by weight of any aromatic isocyanate including -di-isocyanate) By mixing in a negative ratio, weather resistance, adhesive strength, and water resistance are improved.

Here, when preparing the isocyanate mixture, if less than 5 parts by weight of aliphatic isocyanate is mixed with 1 part by weight of aromatic isocyanate, the possibility of yellowing increases, and if the aliphatic isocyanate is mixed with more than 7 parts by weight per 1 part by weight of aromatic isocyanate. When mixing, there is a problem of reduced adhesive strength and durability, so it is preferable to mix at a ratio of 5 to 7 parts by weight of aliphatic isocyanate relative to 1 part by weight of aromatic isocyanate.

In addition, the ether polyol added to the main component of the hybrid coating resin 41 is preferably an ether polyol with a molecular weight of 2000 to 5000 to improve the water resistance and flexibility of the hybrid coating resin 41, and is added in an amount of less than 60% by weight. In this case, the flexibility is reduced and the shock absorbency is not satisfied, and if more than 70% by weight is added, the flexibility becomes too strong and workability is reduced. Therefore, the ether polyol added to the main component of the hybrid coating resin 41 is 60 to 70% by weight. It is desirable to add

In addition, the linear structure chain extender added to the main component of the hybrid coating resin 41 is a composition that improves the adhesive strength and physical properties of the hybrid coating resin 41 and is 1,4BG (1,4 Butylene glycol) or PEG-200. It is preferable to use any one selected from linear structure chain extenders including (Polyethylene glycol 200).

In addition, the plasticizer added to the main component of the hybrid coating resin 41 is preferably a non-phthalate plasticizer such as DOTP (Di-octyl terephthlate), epoxidized soybean oil, or cyclohexene ester compound. By using , the user can be prevented from being exposed to environmental hormones and the flexibility of the hybrid coating resin 41 can be increased.

The curing agent of the hybrid coating resin 41 includes 70 to 90% by weight of polyaspartic ester polyol, 8 to 28% by weight of plasticizer, 0.1 to 0.3% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), and formami. It is synthesized from 1 to 2% by weight of a Dean-based ultraviolet absorber, and is synthesized by stirring for 1 to 2 hours with a stirrer at a speed of 140 to 160 rpm to ensure even dispersion when synthesizing the curing agent.

In addition, the polyaspartic ester polyol added to the curing agent of the hybrid coating resin 41 has an amine functional group and improves the durability and weather resistance of the hybrid coating resin 41, preferably by curing. Polyaspartic ester polyol with a molecular weight of 400 to 800, which has good workability due to its slow speed, can be used. If less than 70% by weight is added, flexibility increases, but there is a problem in that hardness is not secured during coating. When added in excess of weight percent, the hardness increases during coating, but there is a problem in that the flexibility decreases and the slip resistance after coating decreases. Therefore, the curing agent of the hybrid coating resin 41 contains 70 to 90 weight percent of polyaspartic ester polyol. It is desirable to add it.

In addition, the plasticizer added to the curing agent of the hybrid coating resin 41 is a non-phthalate plasticizer such as DOTP (Di-octyl terephthlate), epoxidized soybean oil, or cyclohexene ester. As a result, the user can be prevented from being exposed to environmental hormones and the flexibility of the hybrid coating resin 41 can be increased.

In addition, the silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane) added to the curing agent of the hybrid coating resin 41 is a hybrid with a chemical formula such as 'CH ₂ -CHCH ₂ O(CH ₂ ) ₃ Si(OCH ₃ ) ₃ '. The adhesive strength of the coating resin 41 can be increased and the base material and hardener can react evenly.

In addition, the formamidine-based ultraviolet absorber added to the curing agent of the hybrid coating resin 41 increases weather resistance and prevents yellowing of the coating resin, and has no anti-yellowing function at all when added less than 1% by weight. If added in excess of %, the construction ratio increases and it becomes particularly vulnerable to near-ultraviolet rays, so it is preferable to add 1 to 2% by weight of the formamidine-based ultraviolet absorber added to the curing agent of the hybrid coating resin 41.

200 to 400 parts by weight of the hybrid coating resin (41) is reacted with 100 parts by weight of the curing agent of the adhesive hybrid coating resin (41) prepared as described above, and is used to form the coating layer (40) of the present invention. It is possible to synthesize a hybrid coating resin (41).

At this time, when synthesizing the hybrid coating resin 41, if less than 200 parts by weight of the base material is added to 100 parts by weight of the curing agent, a problem may occur in which flexibility decreases and shock absorbency decreases. If more than 400 parts by weight of the base material is added, the flexibility increases but the physical properties and weather resistance decrease, so the mixing ratio of the base material to the hardener is reacted at a ratio of 200 to 400 parts by weight of the base material to 100 parts by weight of the hardener for adhesion. It is desirable to synthesize a hybrid coating resin (41).

As described below, in order to confirm the performance of the flooring embossing method applying the hybrid coating resin of the present invention, a test piece of the embossed flooring applied with the hybrid coating resin prepared according to the manufacturing examples and examples below was prepared according to KS-F-3888- After testing using the test method in 2, the measurement results were compared with the IAAF standards, and if they satisfied the standards presented by the IAAF, they were evaluated as “pass”; if they did not meet the standards presented by the IAAF, they were evaluated as “failed.” In this case, standard quality standards were applied and evaluated.

At this time, the standard quality standards are tensile strength ( _TB ) 6.0N/㎟ or more, elongation (E _B ) 500% or more, Shore A hardness (S _A ) 50~70, adhesion strength ( _GS ) 1.5N/㎟ or more, Abrasion resistance ( _CS ) is defined as less than 50mg (CS-17, 1000 times).

In other words, the standard quality standards evaluate “pass” if the following conditions are met.

⑴ T _B ≥ 6.0 [N/㎟]

⑵ E _B ≥ 500 [%]

⑶ 50 ≤ S _A ≤ 70 [Shore A]

⑷ G _S ≥ 1.5 [N/㎟]

⑸ C _S ≤ 50 [mg]

At this time, the abrasion resistance (C _S ) evaluation is to wear the collected 10cm The lower the measured value (mg), the better the wear resistance (C _S ).

<Production Example 1>

22.5% by weight of aromatic isocyanate, 60% by weight of poly-ether polyol, 1% by weight of branched chain extender, and 16.5% by weight of non-phthalate plasticizer at a temperature of 80~90℃ for 5 hours. The base material of the adhesive urethane resin (21) was synthesized by heating and mixing.

<Production Example 2>

1.5% by weight of amine chain extender, 40% by weight of polyether polyol, 15% by weight of non-phthalate plasticizer, 0.2% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), 41% by weight of calcium carbonate, pigment A curing agent for the adhesive urethane resin (21) was synthesized by stirring 1.3% by weight of the bismuth-based catalyst using a stirrer for 1 hour at a speed of 150 rpm.

<Production Example 3>

16% by weight of an isocyanate mixture of aromatic isocyanate and aliphatic isocyanate, 65% by weight of ether polyol, 1% by weight of linear structure chain extender, and 18% by weight of non-phthalate plasticizer at 80~90℃. The base material of the hybrid coating resin (41) was synthesized by heating and mixing at temperature for 5 hours.

<Production Example 4>

80% by weight of polyaspartic ester polyol, 18% by weight of non-phthalate plasticizer, 0.2% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), and 1.8% by weight of formamidine UV absorber were stirred using a stirrer for 1 hour at a speed of 150 rpm. A curing agent for the hybrid coating resin (41) was synthesized.

<Example 1>

The base material of <Preparation Example 1> and the curing agent of <Preparation Example 2> were mixed in a ratio of 1:2.5 to prepare the urethane resin for adhesive (21).

<Example 2>

Hybrid coating resin 41 was prepared by mixing the main ingredient of <Preparation Example 3> and the curing agent of <Preparation Example 4>.

<Example 3>

The adhesive urethane resin 21 of <Example 1> was applied to a thickness of 0.6 mm on the flooring material 10 made of soft urethane with a thickness of 11 mm and semi-hard urethane with a thickness of 1 mm, and embossed with a urethane chip or EPDM chip. Top the chips 31 with a thickness of 2 mm.

After 12 hours, the embossed chip 31 that is not fixed by the adhesive urethane resin 21 is removed using a vacuum cleaner, etc., and the chip layer formed by the embossed chip 31 fixed to the adhesive urethane resin 21 is removed. (30) The flooring material was embossed by evenly applying the hybrid coating resin 41 of <Example 2> using a roller on the upper part.

<Test Example 1>

1-1. Adhesive urethane resin physical properties (NCO%)

The adhesive urethane resin (21) was prepared by the method of <Example 1>, but the NCO% (isocyanate content) of the adhesive urethane resin (21) was varied, and each of the prepared adhesive urethane resins (21) was prepared by varying the NCO% (isocyanate content). ) to measure the physical properties of the adhesive layer 20 formed of the urethane resin for adhesive 21 by collecting test pieces of 1.0 M × 1.0 M from the flooring material embossed using the method of <Example 3>.

(However, since the adhesive urethane resin 21 forms the adhesive layer 20 installed on the lower side of the coating layer 40, the abrasion resistance evaluation was omitted.)

division Topic NCO% (isocyanate content) 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 tensile strength
[N/㎟] 5.1 5.5 6.0 6.5 7.0 7.3 7.5 7.6 7.8 elongation rate
[%] 720 700 680 650 610 550 500 430 400 Hardness
[Shore A] 48 50 55 59 63 65 67 69 71 Adhesion strength
[N/㎟] 0.9 1.3 1.5 1.5 1.5 1.6 1.6 1.7 1.7 note fail fail pass pass pass pass pass fail fail

Referring to Table 1, the results of the test of the physical properties (NCO%) of the adhesive urethane resin in Test Example 1-1, the tensile strength (T _B ), hardness (S _A ) and adhesion strength ( _GS ) according to the main NCO% content are It can be seen that it is proportional, and the elongation rate (E _B ) is inversely proportional.

At this time, satisfying the tensile strength condition of the standard quality standard means that the NCO% of the main material is 4.5% or more, satisfying the elongation condition of the standard quality standard means that the NCO% of the main material is 6.5% or less, and Shore A hardness of the standard quality standard. Satisfying the conditions means that the NCO% of the base material is 4.0 to 7.0%, and satisfying the adhesion strength of the standard quality standard means that the NCO% of the base material is 4.5% or more.

Therefore, the subject of adhesive urethane resin (21) is in the standard quality standards.

⑴ T _B ≥ 6.0 [N/㎟]

⑵ E _B ≥ 500 [%]

⑶ 50 ≤ S _A ≤ 70 [Shore A]

⑷ G _S ≥ 1.5 [N/㎟]

It is preferable that the NCO% (isocyanate content) is 4.5% to 6.5%, which satisfies all of ⑴ to ⑷.

<Test Example 2>

2-1. Hybrid coating resin physical properties (isocyanate mixture mixing ratio)

<Example 3> was prepared using the hybrid coating resin 41 of <Example 2>, which was prepared by varying the mixing ratio of aromatic isocyanate and aliphatic isocyanate constituting the isocyanate mixture in <Preparation Example 3>. Test pieces measuring 1.0 M

Here, the NCO% of the main hybrid coating resin 41 disclosed in <Preparation Example 3> is 5%, and the mixing weight ratio of the main agent synthesized in <Example 2> and the curing agent is 3:1.

In addition, the gray scale test in Table 2 below was measured using the method of 'ASTM G154-16 (Cycle1)'. Based on the result value of 4, if it is 4 or more, there is almost no yellowing, and if it is less than 4, yellowing occurs. , a gray scale score of 4 or higher is evaluated as “passing.”

division Aromatic isocyanate: Aliphatic isocyanate 1:3 1:4 1:5 1:6 1:7 1:8 1:9 tensile strength
[N/㎟] 7.9 7.8 7.5 7.2 6.7 5.8 4.2 elongation rate
[%] 630 620 610 600 570 540 480 gray scale
(yellowing) 3 3 4 4 4 4 5 wear resistance
[mg] 32 35 39 42 49 58 71 note fail fail pass pass pass fail fail

As shown in Table 2, as shown in Table 2, the tensile strength (T _B ) and elongation (E _B ) are inversely proportional as the ratio of aliphatic isocyanate increases, and gray It can be seen that the scale and wear resistance (C _S ) measurements are proportional.

Here, the ratio of aliphatic isocyanate that satisfies the tensile strength ( _TB ) condition of the standard quality standard is 7 or less, the ratio of aliphatic isocyanate that satisfies the elongation (E _B ) condition is 8 or less, and the ratio of aliphatic isocyanate that satisfies the gray scale condition is 8 or less. It is confirmed that the ratio of isocyanate is 5 or more, and the ratio of aliphatic isocyanate that satisfies the wear resistance ( _CS ) condition is 7 or less.

Therefore, the isocyanate mixture added to the main component of the hybrid coating resin (41) meets the standard quality standards.

⑴ T _B ≥ 6.0 [N/㎟]

⑵ E _B ≥ 500 [%]

⑸ C _S ≤ 50 [mg]

It can be confirmed that the mixing ratio of aromatic isocyanate and aliphatic isocyanate with a gray scale of 4 or higher while satisfying all of ⑴, ⑵, and ⑸ is 1:5 to 1:7.

2-2. Hybrid coating resin properties (NCO%)

The hybrid coating resin 41 was prepared by the method of <Example 2>, but the NCO% (isocyanate content) of the hybrid coating resin 41 was varied, and each of the hybrid coating resins 41 thus prepared was used. Test pieces measuring 1.0 M

Here, the mixing weight ratio of the base material synthesized in <Example 2> and the curing agent is 3:1.

division Topic NCO% (isocyanate content) 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 tensile strength
[N/㎟] 3.5 5.2 6.1 6.7 7.2 7.6 8.0 8.9 9.1 elongation rate
[%] 750 720 670 630 580 540 500 420 360 Hardness
[Shore A] 42 51 56 62 65 68 70 73 76 wear resistance
[mg] 71 65 48 40 37 35 32 30 29 shock absorbency
[%] 44 42 40 38 37 37 36 36 33 slip resistance
[BPN] 74 71 69 67 64 62 60 59 57 note fail fail pass pass pass pass pass fail fail

Test Example 2-2 hybrid coating resin physical properties (NCO%) test results, as shown in Table 3, as NCO% (isocyanate content) of the hybrid coating resin main material increases, tensile strength (T _B ) and hardness (S _A ) It can be seen that is proportional, and elongation (E _B ), wear resistance (C _S ), shock absorption, and slip resistance are inversely proportional.

Here, the NCO% of the material that satisfies the tensile strength (T _B ) condition of the standard quality standard is 4.5% or more, and the NCO% of the material that satisfies the elongation (E _B ) condition of the standard quality standard is 6.5% or less, and the standard It was confirmed that the NCO% of the material satisfying the hardness (S _A ) condition of the quality standard was 6.5% or less, and the NCO% of the material satisfying the wear resistance (C _S ) condition of the standard quality standard was 4.5% or more.

In addition, it was confirmed that the NCO% of the material that satisfies the IAAF standard's 'shock absorption 35-50%' condition is 7.0% or less, and the IAAF standard's 'slip resistance 47 BPN or more' condition is all met.

Therefore, the subject of the hybrid coating resin 41 is in the standard quality standards,

⑴ T _B ≥ 6.0 [N/㎟]

⑵ E _B ≥ 500 [%]

⑶ 50 ≤ S _A ≤ 70 [Shore A]

⑸ C _S ≤ 50 [mg]

It is preferable that the NCO% (isocyanate content) is 4.5% to 6.5% in a range that satisfies all of ⑴ to ⑶ and ⑸ and IAAF standards (shock absorption 35-50%, slip resistance 47 BPN or more).

2-3. Hybrid coating resin physical properties (base and hardener mixing ratio)

The hybrid coating resin 41 was prepared by the method of <Example 2>, but the mixing ratio of the hybrid coating resin 41 base material and the curing agent was changed, and each of the hybrid coating resins 41 thus prepared was used. Test pieces of 1.0 M

Here, the NCO% of the hybrid coating resin 41 disclosed in <Preparation Example 3> is based on 5%.

division Subject : Hardener 1:2 1:1 2:1 3:1 4:1 5:1 6:1 tensile strength
[N/㎟] 13.0 11.0 9.0 7.5 6.0 4.2 3.1 elongation rate
[%] 180 330 500 610 700 780 850 Hardness
[Shore A] 94 81 70 62 51 48 45 wear resistance
[mg] 25 32 35 38 49 78 92 shock absorbency
[%] 29 34 38 41 45 50 53 slip resistance
[BPN] 40 47 52 58 65 72 79 note fail fail pass pass pass fail fail

As a result of the test of the physical properties of the hybrid coating resin in Test Example 2-3 (base/curing agent mixture weight ratio), as the mixture weight ratio of curing agent to base increases, tensile strength (T _B ) and hardness (S _A ) are inversely proportional, and elongation (E _B) ), wear resistance (C _S ), shock absorption, and slip resistance can be confirmed to be proportional.

Here, the weight ratio of the base material and hardener that satisfies the tensile strength (T _B ) conditions of the standard quality standards is that the base material is mixed at a ratio of 4 or less to 1 hardener, and the base material that satisfies the elongation (E _B ) conditions of the standard quality standards. ·The hardener mixing weight ratio is a ratio of 2 or more of the base material to hardener 1, and the base/hardener mixing weight ratio that satisfies the hardness (S _A ) conditions of the standard quality standards is a ratio of 2 to 4 of the base material to hardener 1. It was confirmed that the base/hardener mixture weight ratio that satisfies the wear resistance ( _CS ) conditions of the standard quality standards is a ratio of 4 or less of the base material to 1 hardener.

In addition, the base/hardener mixture weight ratio that satisfies the IAAF standard's 'shock absorption 35-50%' condition is a base material mixed in a ratio of 1 to 5 to 1 hardener, and satisfies the IAAF standard's 'slip resistance of 47 BPN or more' condition. It was confirmed that the base/hardener mixing weight ratio was 1 or more of the base material to 1 hardener.

Therefore, according to the standard quality standards, the base/curing agent mixing weight ratio of the hybrid coating resin 41 is,

⑴ T _B ≥ 6.0 [N/㎟]

⑵ E _B ≥ 500 [%]

⑶ 50 ≤ S _A ≤ 70 [Shore A]

⑸ C _S ≤ 50 [mg]

⑴ to ⑶, ⑸, and the base/hardener mixture weight ratio in a range that satisfies all IAAF standards (shock absorption 35-50%, slip resistance 47 BPN or more) is preferably formulated at a ratio of 2:1 to 4:1.

<Test Example 3>

3-1. Shock absorption (coating layer thickness)

Embossing was applied to the flooring as in <Example 3> above, but test pieces of 1.0 M A 20kg weight was dropped from a height of 55mm to the same point, the maximum impact value was measured three times, and the average of the second and third maximum impact values was calculated and evaluated as shown in Equation 1 below, and the results are shown in Table 5 below. indicated.

At this time, R is shock absorption (%), Ft is the maximum impact value of the test specimen (N), and Fr is the maximum impact value of concrete (N).

3-2. Slip resistance (coating layer thickness)

Embossing was applied to the flooring as in <Example 3>, but test pieces of 1.0 M BPN (British Pendulum Number) was measured and evaluated, and the results are shown in Table 5 below.

division Coating layer (40) thickness IAAF standards 0.3 0.4 0.5 0.6 0.7 0.8 0.9 shock absorbency
[%] 52 48 44 40 38 35 32 35≤R≤50 slip resistance
[BPN] 73 70 65 59 54 49 46 BPN≥47 note fail pass pass pass pass pass fail -

As a result of the shock absorption (coating layer thickness) test in Test Example 3-1, as shown in Table 3, it can be seen that as the thickness of the coating layer increases, the shock absorption (R) decreases in inverse proportion.

In addition, as shown in Table 3, as shown in Table 3, the skid resistance (coating layer thickness) test results of Test Example 3-2 showed that the skid resistance (BPN) also decreased as the thickness of the coating layer increased.

Here, as shown in Table 3, the coating layer thickness that satisfies the IAAF standard's 'shock absorption 35-50%' condition is 0.4 to 0.8 mm, and the coating layer thickness that satisfies the IAAF standard's 'slip resistance 47 BPN or more' condition is 0.8 mm. It was confirmed to be less than mm.

Therefore, it is preferable that the thickness of the coating layer 40 installed by the construction method of the present invention is 0.4 to 0.8 mm.

In the above content, the present invention has been described based on the drawings, and is not limited to the parts explained based on the drawings, and the parts explained based on the drawings do not depart from the gist of the present invention in the technical field to which the present invention pertains. It can be implemented with various modifications.

1: Flooring embossing construction method
10: Flooring
20: adhesive layer
21: Urethane resin for adhesive
30: chip layer
31: emboss chip
40: coating layer
41: Hybrid coating resin

Claims (11)

Isocyanate mixture of aromatic isocyanate and aliphatic isocyanate in a predetermined ratio, a base material synthesized from polyol, chain extender, and plasticizer, and polyaspartic ester polyol, plasticizer, and silane couple. A hybrid coating resin characterized by mixing a ring agent (γ-Glycidyloxypropyl trimethoxysilane) and a curing agent synthesized from a formamidine-based ultraviolet absorber in a predetermined ratio.
According to paragraph 1,
The main ingredient of the hybrid coating resin 41 is heat-mixed with 10 to 20% of isocyanate mixture, 60 to 70% by weight of ether polyol, 0.5 to 2% by weight of linear structure chain extender, and 10 to 20% by weight of plasticizer, using a stirrer. Hybrid coating resin characterized in that it is synthesized by dispersing evenly.
According to paragraph 2,
The isocyanate mixture is any selected from aromatic isocyanates including TDI (2,4-toluene-di-isocyanate), MDI (4,4-di-phenyl-methane-di-isocyanate), or XDI (Xylene-di-isocyanate). A hybrid coating resin characterized in that 5 to 7 parts by weight of any one selected from aliphatic isocyanates including HDI (1,6-Hexanmethylene Diisocyanate) or IPDI (Isophorone Diisocyanate) is mixed with 1 part by weight.
According to paragraph 1,
The curing agent of the hybrid coating resin 41 includes 70 to 90% by weight of polyaspartic ester polyol, 8 to 28% by weight of plasticizer, 0.1 to 0.3% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane), and formami. A hybrid coating resin characterized by synthesizing 1 to 2% by weight of a Dean-based ultraviolet absorber.
According to paragraph 1,
The hybrid coating resin (41) is a hybrid coating resin characterized in that 200 to 400 parts by weight of the base material is mixed with 100 parts by weight of the curing agent.
A urethane resin 21 for adhesiveness is constructed on the top of the flooring material 10, and an embossed chip 31 containing a urethane chip or an EPDM chip is placed on the top of the urethane resin 21 for adhesiveness. After a predetermined time has elapsed, the adhesive As the urethane resin 21 is cured, an adhesive layer 20 is formed, and the embossed chip 31 placed on the adhesive urethane resin 21 is fixed to the adhesive layer 20 to form a chip layer 30. (30) After removing the upper unfixed embossed chip 31, the hybrid coating resin 41 of any one of claims 1 to 5 is applied to the upper part of the chip layer 30 to coat the surface of the chip layer 30. A flooring embossing construction method using a hybrid coating resin, characterized in that.
According to clause 6,
The adhesive urethane resin (21) is a mixture of a base material synthesized from isocyanate, polyol, chain extender, and plasticizer, and a curing agent synthesized from chain extender, polyol, plasticizer, silane coupling agent, filler, and pigment in a predetermined ratio. A flooring embossing construction method using a characterized hybrid coating resin.
In clause 7,
The main ingredient of the adhesive urethane resin (21) is 15 to 25% by weight of isocyanate, 50 to 60% by weight of polyol, 0.5 to 5% by weight of chain extender, and 10 to 20% by weight of plasticizer, mixed by heating, and evenly mixed using a stirrer. A flooring embossing construction method using a hybrid coating resin characterized by dispersion and synthesis.
According to clause 8,
The isocyanate mixed with the main ingredient of the adhesive urethane resin 21 is TDI (2,4-toluene-di-isocyanate), MDI (4,4-di-phenyl-methane-di-isocyanate), which has excellent adhesive strength and durability. A flooring embossing construction method using a hybrid coating resin, characterized in that one selected from aromatic isocyanates including XDI (Xylene-di-isocyanate).
In clause 7,
The curing agent of the adhesive urethane resin (21) is 1 to 2% by weight of amine chain extender, 30 to 47% by weight of polyol, 10 to 20% by weight of plasticizer, and 0.1 to 0.3% by weight of silane coupling agent (γ-Glycidyloxypropyl trimethoxysilane). , A flooring embossing method using a hybrid coating resin, characterized in that 40 to 50% by weight of filler, 1 to 3% by weight of pigment, and 0.5 to 1% by weight of catalyst.
According to clause 6,
The thickness of the adhesive urethane resin 21 applied on top of the flooring 10 is 0.6 to 0.8 mm, and the thickness of the chip layer 30 formed by the embossed chip 31 topping the urethane resin 21 is 2 to 3 mm. A flooring embossing construction method using a hybrid coating resin, characterized in that the thickness of the coating layer 40 formed by the hybrid coating resin 41 is 0.4 mm to 0.8 mm.