KR102095020B1 - 2-component polyurea resin composition excellent in durability and visibility for a road marking and method for a road marking using the same - Google Patents

Abstract

The present invention relates to a two-component polyurea paint composition for marking a road surface excellent in durability and visibility, which comprises: a main agent including polyisocyanate; and a curing agent including polyaspartic acid ester, a pigment, and calcium carbonate.

Description

2-component polyurea coating composition for road marking with excellent durability and visibility and a method of forming a coating film for road marking using the same {2-COMPONENT POLYUREA RESIN COMPOSITION EXCELLENT IN DURABILITY AND VISIBILITY FOR A ROAD MARKING AND METHOD FOR A ROAD MARKING USING THE SAME }

The present invention relates to a two-component polyurea road surface coating material composition, and more specifically, it can be used as a two-component room temperature curing type lane resin composition, two-component polyurea road surface having excellent properties of abrasion resistance, durability and weather resistance and visibility It relates to a coating composition for a cover.

In general, the surface of the paved road is coated with paint on the surface of the road to induce the direction of the road or to maintain the distance between vehicles. Such road markings indicate the speed limit, the direction of travel, and destination information to indicate the driver's Convenience and safety can be improved.

The first lane paints were manufactured in the UK in the 1950s using thermoplastic resins, and various types of road marking paints have been developed and used to date for various purposes. Therefore, as the role of the lane on the road is emphasized day by day, studies related to the wear resistance, durability, weatherability and visibility of the lane have been continuously reviewed.

In the roads, lanes and lanes are installed in the lanes and lanes for the driver to easily identify the roads. In particular, the lane wear damage caused by abrasion is severe in most cases in areas where the vehicle runs at high speed, such as highways. Even in Edo, the area frequently used by trucks is easily damaged by the wear and tear on the weight of the trucks, so it does not play a role as a lane guide line, and it often harms the environment.

On the other hand, the types of domestic road marking paints are divided into three types according to the KS classification, and the types are waterborne paints, fusion-type road marking paints (thermoplastics) and room temperature curing type road marking paints (cold). plastics).

The water-soluble road surface coating material is prepared in a liquid form by mixing water or pigment with an aqueous emulsion resin, and is affected by the surrounding construction environment (temperature or humidity) in that it is an aqueous product. There are many problems.

In addition, the general fusion-type coating method using a thermoplastic resin requires high heat, and the construction period is long after installation, which makes it uncomfortable for transportation, and construction is impossible when the road surface is frozen, such as in winter. , This method is widely used as a method of construction while minimizing the traffic restrictions of downtown and congested roads, but it is very thin and slippery, so there is a problem that the friction coefficient decreases rather than the road surface, causing car slipping and pedestrian traffic. It hinders safe walking, and there is a problem that cracks easily occur after construction.

According to the above circumstances, the present invention is used on the road surface of asphalt pavement or concrete pavement to form a new room temperature curable road sign composition having excellent properties of abrasion resistance, durability, weather resistance and visibility, and a road sign coating film using the same I would like to suggest a method.

Next, a brief look at the prior art existing in the field to which the technology of the present invention belongs, as a prior art for such a two-component polyurea road surface lane resin composition, first published patent publication No. 10-2017-0007983 (2017.01.23 Publication date) relates to a room temperature curing type two-component road sign coating composition, more specifically, the coating composition is a primary amine; And secondary amines; And isocyanates; And a curing agent comprising a polyether polyol, wherein the mixing ratio of the primary amine and the secondary amine is 25:75 to 30:70 by weight, and the isocyanate content is 25% to 30% by weight relative to 100% by weight of the curing agent. A description is given of the composition in weight percent.

In addition, the registered patent publication No. 10-1219476 (announced on Nov. 2013) relates to a two-liquid composition for road marking, and more specifically, 50 to 50 polyols based on 100 parts by weight of bisphenol A type diglycidyl ether epoxy A first liquid containing 150 parts by weight; A second liquid agent containing 10 to 20 parts by weight of a curing accelerator containing an imidazole-based compound relative to 100 parts by weight of a curing agent containing an isocyanate and an amine compound; Contains a filler comprising a quartz powder, a pigment, a reflector; the polyol is a polyether polyol resin to an amine polyol resin in a weight ratio of 1: 1, the composition is described.

In addition, Patent Registration No. 10-1490443 (2015.02.09. Announcement date) relates to a polyurea composition for road signs, more specifically, polyisocyanate; and one or more amines of one or more males (amides / esters) ) And fumar (amide / ester) secondary receptors prepared by addition reaction with Michael acceptors; a two-liquid liquid road sign composition for road signs comprising a.

However, despite the prior art including the above-mentioned prior art, cracks due to impact and friction are still occurring in the lane of the road surface, and there is a problem that the coating film of the lane is deformed due to hot road temperature in summer or humidity in rain. There is a continuous demand for the development of a new two-component polyurea road sign coating composition that is not easily damaged by impact and weather, has excellent moisture resistance and weather resistance, and has visibility.

Publication Patent Publication No. 10-2017-0007983 (Publication date: 2017.01.23.) Registered Patent Publication No. 10-1219476 (Notice: 2013.01.11.) Registered Patent Publication No. 10-1490443 (Publication date: 2015.02.09.)

The present invention was created to solve the problems as described above, and includes an aliphatic polyisocyanate as a subject, and a polyapartic acid ester, a pigment, and calcium carbonate as a curing agent, thereby exhibiting excellent abrasion resistance, durability, weatherability, and visibility. The purpose of the branch is to provide a novel room temperature curing type two-component polyurea coating composition for road surface marking.

In addition, another object of the present invention is to provide a method for forming a coating film for road surface marking using the two-component polyurea road surface coating material composition as described above.

The two-component polyurea road surface coating composition according to an embodiment of the present invention includes a subject comprising polyisocyanate; And a curing agent comprising a polyaspartic acid ester represented by the following Chemical Formula A, a pigment and calcium carbonate.

[Formula A]

Here, R 'in the formula A is substituted or unsubstituted alkylene having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkylene having 5 to 20 carbon atoms, substituted or unsubstituted arylene having 6 to 20 carbon atoms, Is selected from the connector represented by the structural formula A,

[Structural Formula A]

In the structural formula A, '*' is a binding site binding to a nitrogen atom,

The R1 to R4 are the same or different, and each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

As an embodiment, the polyaspartic acid ester represented by Formula A may be a polyaspartic acid ester represented by Formula 1 or a polyaspartic acid ester represented by Formula 2 below.

[Formula 1]

[Formula 2]

In one embodiment, the polyisocyanate may include an aliphatic polyisocyanate (Aliphatic polyisocyanate).

In one embodiment, the subject may include 80 to 100 wt% of the aliphatic polyisocyanate based on the total components of the subject.

In one embodiment, the curing agent is based on the total component of the curing agent 25 to 55 wt% of the polyaspartic acid ester represented by Formula 1, 0 to 30 wt% of the polyaspartic acid ester represented by Formula 2, pigment 1 to 30 wt% and 15 to 45 wt% of calcium carbonate.

As an embodiment, based on the total composition of the two-component polyurea road surface coating material, the subject may include 20 to 50 wt% and a curing agent 50 to 80 wt%.

As an embodiment, the aliphatic polyisocyanate is hexamethylene diisocyanate (HDI), 4,4'-dicyclohexylmethane diisocyanate (4,4'-diciclohexilmetan diisocianato, HMDI), iso It may be at least one selected from isophorone diisocyanate (IPDI), hexamethylene diisocyanate trimer, and isophorone diisocyanate trimer, or a mixture thereof.

As an embodiment, the curing agent may additionally include 0 to 10 wt% of a UV stabilizer, 0 to 10 wt% of a thickener, and 0 to 10 wt% of an antioxidant based on the total components of the curing agent.

In addition, the present invention provides a method for forming a coating film for road surface coating by coating the two-component polyurea road surface coating material composition on the road surface.

The two-component polyurea road surface coating material composition according to the present invention includes a polyisocyanate and a curing agent comprising a polyaspartic acid ester, and thus has high mechanical properties, and has excellent durability, weatherability and visibility. It can be constructed, and also has excellent moisture resistance, so it has the effect of stably maintaining the performance of the coating film for road marking even in an environment exposed to humid weather such as snow or rain.

In addition, the two-component polyurea road surface coating composition according to the present invention is modified at a high temperature (40 ° C or higher) by using a polyaspartic acid ester modified with diethyltoluene diamine in the polyaspartic acid ester among the components of the curing agent. By overcoming the shortcomings of the generated polyaspartic acid ester, there is an effect that can prevent the deformation of the coating film for road surface marking in the frictional heat generated when passing through the vehicle or in summer.

In addition, the present invention has an effect that the weather resistance can be improved by using an aliphatic isocyanate in the isocyanate as a component of the subject.

1 is a flowchart illustrating a method of forming a coating film for road surface marking according to an embodiment of the present invention.

Hereinafter, a coating composition for a two-component polyurea road surface coating according to the present invention and a road surface coating film using the same so that a person having ordinary knowledge in the art to which the present invention pertains can easily carry out the present invention with reference to the accompanying drawings It will be described in detail a preferred embodiment of the method of forming.

In the detailed description of the principles of the preferred embodiment of the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

The two-component polyurea road surface coating composition according to the present invention includes a subject comprising polyisocyanate; And a curing agent comprising a polyaspartic acid ester, a pigment, and calcium carbonate.

The polyisocyanate used as the subject preferably includes aliphatic polyisocyanate, and is a type of the aliphatic polyisocyanate, hexamethylene diisocyanate (HDI), 4,4. At least one selected from '-dicyclohexylmethane diisocyanate (4,4'-diciclohexilmetan diisocianato, HMDI), isophorone diisocyanate (IPDI), hexamethylene diisocyanate trimer, and isophorone diisocyanate trimer Or mixtures thereof.

Meanwhile, the polyaspartic acid ester used as the curing agent component may be a polyaspartic acid ester represented by the following formula (A).

[Formula A]

Here, the linking group R 'in Formula A is substituted or unsubstituted alkylene having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkylene having 5 to 20 carbon atoms, substituted or unsubstituted arylene having 6 to 20 carbon atoms, It may be selected from a linker represented by the following structural formula A.

[Structural Formula A]

In the structural formula A, '*' is a binding site bonded to a nitrogen atom, and R1 to R4 are the same or different, and each independently substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or substituted or unsubstituted carbon number 6 It is an aryl group of 20 to 20.

The polyaspartic acid ester represented by the formula (A) according to the present invention can be obtained by reaction of a diamine and a diester containing a double bond by the reaction scheme A below.

<Scheme A>

Here, the polyaspartic acid ester represented by the formula (A) includes two additional secondary amine groups, as shown in Figure A below, and they are poly as a reactive center by reaction with polyisocyanate in the subject. It is possible to form a urea bond, has a high mechanical property by the introduction of such a polyaspartic acid ester, and has the effect of providing a coating film for road markings having excellent durability, weather resistance and visibility.

<Picture A>

On the other hand, as a preferred structural formula of the polyaspartic acid ester (Polyaspartic acid ester) represented by the formula (A) in the present invention, it uses the polyaspartic acid ester represented by the following formula (1), or polyaspart represented by the formula (2) Acid esters can be used.

[Formula 1]

[Formula 2]

Here, the polyaspartic acid ester represented by Chemical Formula 1 is aspartic acid N, N '-(methylene-d-4,1-cyclohexanediyl) bis-tetraethyl ester, and the polyaspartic acid ester is des Corresponds to DESMOPHEN ™ NH1420 polyaspartic polyamino co-reactant (Bayer Material Science) and K-CORR ™ 100 (King Industries).

When the polyaspartic acid ester represented by Chemical Formula 1 is applied as a curing agent, the polyurea road surface coating material produced is cured within seconds at room temperature, has excellent durability and visibility, has high mechanical properties, is eco-friendly, urethane or It may provide an advantage of excellent moisture resistance compared to the epoxy resin.

On the other hand, in the case of the polyaspartic acid ester represented by Chemical Formula 1, it has the improved advantages as described above, but the deformation of the coating film occurs at a high temperature (above 40 ° C.), so when applied to the coating film for coating paints, it passes in the summer or vehicle. There may be a possibility of problems such as deformation and contamination (tire marks) of the city lane, and in order to solve this problem in the present invention, to improve the heat resistance of the polyaspartic acid ester represented by Chemical Formula 1 and weather resistance in summer To this end, diethyl toluene diamine represented by Chemical Formula 2 may be used as a modified polyaspartic acid ester.

The diethyl toluene diamine-modified polyaspartic acid ester represented by Chemical Formula 2 has high wear resistance and high temperature (above 40 ° C) stability compared to the polyaspartic acid ester represented by Chemical Formula 1, resulting in deformation at high temperature (40 ° C or higher). By overcoming the shortcomings of the polyaspartic acid ester, it is possible to further improve the durability and weather resistance of the coating film by preventing deformation of the coating film for road surface marking in summer weather or friction heat generated when passing the vehicle.

For reference, the diethyltoluene diamine-modified polyaspartic acid ester represented by Chemical Formula 2 is added with diethyl toluene diamine DETDA (DiEthyl Toluene Diamine) represented by Chemical Formula 3 and an antioxidant, and then slowly stirred (50 to 100 rpm). Under a nitrogen atmosphere, it can be easily obtained by reaction by addition of a double alkyl maleic acid ester represented by the following formula (4).

[Formula 3]

[Formula 4]

Meanwhile, the composition ratio of the two-component polyurea road surface coating composition according to the present invention will be described as follows.

First, the two-component polyurea road surface coating composition according to the present invention, based on the total components of the two-component polyurea road surface coating composition, the subject 20 to 50 wt% and curing agent containing 50 to 80 wt% Preference is given, more preferably 30 to 40 wt% of the subject and 60 to 70 wt% of the curing agent are included.

In addition, when the composition ratio of each component in the curing agent and the subject of the two-component polyurea road surface coating composition according to the present invention is described, the subject includes 80 to 100 wt% of polyisocyanate based on the total components of the subject. It is preferred, and more preferably contains 90 to 100 wt% of polyisocyanate. In this case, it is preferable that the polyisocyanate is an aliphatic polyisocyanate as described above.

In addition, the curing agent is based on the total component of the curing agent 25 to 55 wt% of the polyaspartic acid ester represented by the formula (A), 0 to 30 wt% of the polyaspartic acid ester represented by the formula (2), pigment 1 to 30 wt% And preferably 15 to 45 wt% of calcium carbonate, and more preferably, 35 to 45 wt% of polyaspartic acid ester represented by Chemical Formula 1, 0 to 15 wt of polyaspartic acid ester represented by Chemical Formula 2 %, 10 to 20 wt% pigment and 25 to 35 wt% calcium carbonate.

In addition, in the case of the curing agent in the present invention may further include a coloring pigment, extender pigment, dispersant, finely divided silica, UV stabilizer and calcium carbonate.

The coloring pigment realizes the color of the coating, has the effect of imparting coloring and hiding power, and is a powder having a sun-resistant color without dissolving in water, oil, and solvent, and can be used separately according to function and purpose. It can be divided into inorganic pigments and organic pigments.

The inorganic pigments include metal compounds such as titanium, lead, copper, iron, and chromium, and carbon black made by incomplete combustion of petroleum or natural gas. Organic pigments are in the form of metal compounds that do not dissolve dyes in water or solvents. It can be prevented from dissolving in water and solvent by dyeing the constitutional pigment and the dye.

The extender pigment may be selected from one or more extender pigments such as calcium carbonate, talc, silica sand, mica, and kaolin, and the extender pigment may control properties such as fluidity and viscosity of the paint and control strength, durability, and gloss of the coating film. There is.

In addition, finely divided silica enhances durability and enhances the strength of the coating film through reaction with silane. On the other hand, in the case of calcium carbonate, as a spherical filler, it can improve flowability and increase whiteness.

In the present invention, the two-component road surface coating composition may additionally include at least one of a plasticizer, a wax, as an additional component, and they may be included in a content range of 0.01 to 20 parts by weight based on 100 parts by weight of the coating composition. You can.

The plasticizer is used to prevent cracking of the coating composition in the winter, trimethylpropanol-based plasticizer, phthalate-based plasticizer, and the like, it is preferable to use a trimethylpropanol-based plasticizer having excellent stability.

The wax may be used to prevent the phenomenon of drying failure and durability deterioration by reacting oxygen in the air with an acrylic monomer used in the acrylic resin.

More preferably, the curing agent may further include a UV stabilizer, a thickener, and an antioxidant, in this case, based on the total components of the curing agent, UV stabilizer 0 to 10 wt%, thickener 0 to 10 wt%, oxidation It is preferable to include 0 to 10 wt% of an antioxidant, and more preferably, it may have a range of 1 to 5 wt% of a UV stabilizer, 1 to 5 wt% of a thickener, and 1 to 5 wt% of an antioxidant.

On the other hand, the composition ratio of each component based on the entirety of the two-component polyurea road surface coating material composition according to the present invention is as follows.

The two-component polyurea road surface coating composition according to the present invention, based on the total components of the two-component polyurea road surface coating composition, aliphatic polyisocyanate 16 to 50 wt%, polyaspartic acid represented by the formula (1) Esters 12.5 to 44 wt%, polyaspartic acid esters represented by Formula 2 above, 0 to 24 wt%, pigments 0.5 to 24 wt%, calcium carbonate 7.5 to 36 wt%, UV stabilizers 0 to 8 wt%, thickeners 0 to 8 It is preferred to include wt% and 0 to 8 wt% antioxidant.

More preferably, based on the total components of the two-component polyurea road surface coating composition, aliphatic polyisocyanate 27 to 40 wt%, polyaspartic acid ester represented by Formula 1, 21 to 31.5 wt%, Formula 2 Polyaspartic acid esters represented by 0 to 10.5 wt%, pigments 6 to 14 wt%, calcium carbonate 15 to 24.5 wt%, UV stabilizers 0.6 to 3.5 wt%, thickeners 0.6 to 3.5 wt% and antioxidants 0.6 to 3.5 wt% It may include.

1 is a flow chart for explaining a method for forming a coating film for road surface marking according to an embodiment of the present invention, as shown in this, a method for forming a coating film for road surface marking according to the present invention is on a road surface to be constructed Step (S101) of cleaning the road surface to remove foreign substances, mixing step (S102) of mixing the two-component polyurea road surface coating composition according to the present invention to produce a main resin and a curing agent lane resin composition (S102), mixing in the mixing step A coating film forming step of forming a coating film for road surface coating by applying the lane resin composition on the road surface (S103); And a curing step (S104) of curing the coating film for road marking formed in the coating film forming step.

Hereinafter, the details of the process of the present invention will be described through examples, and the above examples are representative examples related to the present invention, and it is revealed that this alone can never limit the scope of application of the present invention.

( Manufacturing example  One)

Preparation of polyaspartic acid ester represented by formula (1)

At room temperature, 1 mol of PACM (4,4'-Diaminodicyclohexylmethane, Mw 210.37) was added to the 4-neck flask, and nitrogen was injected with gentle stirring (50-100 rpm) and maintained for 30 minutes. 2mol of double alkyl malaic acid ester (Mw 172.18) was slowly added, the temperature was raised to 60 ° C., maintained for about 10 hours, and the reaction was terminated to prepare a polyaspartic acid ester represented by Chemical Formula 1.

( Manufacturing example  2)

Preparation of polyaspartic acid ester represented by formula (2)

At room temperature, 1 mol of DETDA (DiEthyl Toluene Diamine, Mw 178.28) and an antioxidant (1 to 5%) were added to a four-necked flask, and nitrogen was added with gentle stirring (50 to 100 rpm) and maintained for 30 minutes. 2mol of Double alkyl malaic acid ester (Mw 172.18) was slowly added, the temperature was raised to 60 ° C, maintained for about 10 hours, and when the reaction was completed, the UV stabilizer (1 ~ 5%) was added and mixed for 30 minutes to complete the reaction. A polyaspartic acid ester represented by Chemical Formula 2 was prepared.

Example  1 to 5 ( 2 component type Polyurea  Paint composition for road marking)

Example  One

1000 g of the subject made of 100 wt% of aliphatic polyisocyanate with 22% NCO and 500 g of polyaspartic acid ester represented by Formula 1, 150 g of pigment (TiO2), 10 g of thickener, 320 g of calcium carbonate and UV A curing agent containing 20 g of a stabilizer is mixed at room temperature to prepare a coating composition for road markings through a dispersion process, and this is coated on a 400 mm * 200 mm * 50 mm ascon plate with a coating film width of 150 mm and a thickness of 350 µm and a refractive index of 1.7. After applying 30g of 0.4 ~ 08mm glass grain, after measuring retroreflectivity, the wear resistance was measured with the equipment specified in KSM 6080 and the measurement results are shown in Table 1 below.

Example  2

1000 g of subject made from 100 wt% of aliphatic polyisocyanate having 22% NCO and 500 g of polyaspartic acid ester represented by Formula 1, 150 g of pigment (TiO2), 50 g of thickener, 320 g of calcium carbonate and UV A curing agent containing 20 g of a stabilizer is mixed at room temperature to prepare a coating composition for road markings through a dispersion process, and this is coated on a 400 mm * 200 mm * 50 mm ascon plate with a coating film width of 150 mm and a thickness of 350 µm and a refractive index of 1.7. After applying 30g of 0.4 ~ 08mm glass grain, after measuring retroreflectivity, the wear resistance was measured with the equipment specified in KSM 6080 and the measurement results are shown in Table 1 below.

Example  3

1000 g of the subject made of 100 wt% of aliphatic polyisocyanate having 22% NCO and 500 g of polyaspartic acid ester represented by Formula 1, 150 g of pigment (TiO2), 50 g of thickener, 280 g of calcium carbonate and UV A curing agent containing 20 g of a stabilizer is mixed at room temperature to prepare a coating composition for road markings through a dispersion process, and this is coated on a 400 mm * 200 mm * 50 mm ascon plate with a coating film width of 150 mm and a thickness of 350 µm and a refractive index of 1.7. After applying 30g of 0.4 ~ 08mm glass grain, after measuring retroreflectivity, the wear resistance was measured with the equipment specified in KSM 6080 and the measurement results are shown in Table 1 below.

Example  4

1000 g of a subject made of 100 wt% of aliphatic polyisocyanate having 22% NCO%, 450 g of polyaspartic acid ester represented by Chemical Formula 1, 50 g of polyaspartic acid ester represented by Chemical Formula 2, pigment (TiO2) A curing agent containing 150 g, 50 g of thickener, 300 g of calcium carbonate and 20 g of UV stabilizer is mixed at room temperature to produce a coating composition for road markings through a dispersion process, which is coated on a 400 mm * 200 mm * 50 mm ascon plate. The coating thickness of 150mm is applied to 350㎛, the refractive index 1.7, 0.4 ~ 08mm 30g is applied to the glass grain, the retroreflectivity is measured, and the wear resistance is measured with the equipment specified in KSM 6080 and the measurement results are shown in Table 1 below.

Example  5

1000 g of a subject made of 100 wt% of aliphatic polyisocyanate having 22% NCO%, 400 g of polyaspartic acid ester represented by Chemical Formula 1, 100 g of polyaspartic acid ester represented by Chemical Formula 2, pigment (TiO2) A curing agent containing 150 g, 50 g of thickener, 300 g of calcium carbonate and 20 g of UV stabilizer is mixed at room temperature to produce a coating composition for road markings through a dispersion process, which is coated on a 400 mm * 200 mm * 50 mm ascon plate. The coating thickness of 150mm is applied to 350㎛, the refractive index 1.7, 0.4 ~ 08mm 30g is applied to the glass grain, the retroreflectivity is measured, and the wear resistance is measured with the equipment specified in KSM 6080 and the measurement results are shown in Table 1 below.

Comparative example  One

The same experiment was performed except that 500 g of diamine (DETDA (DiEthyl Toluene Diamine)) used in the prior art was used in place of the polyaspartic acid ester represented by Formula A in Example 1 (Polyaspartic acid ester). The physical properties are shown in Table 1 below.

Test (wear resistance test)

Test Methods

With respect to Examples 1 to 5 and Comparative Example 1, after testing according to the KS M 6080: 2014 wear resistance test, each retroreflective performance measurement was measured.

* Yoon load wear resistance tester

① Model: Yoon-Haeng Abrasion Resistance Tester (SSENES, Korea)

② Velocity: 60 km / h

③ Pre-rotation: Run 3 h while spraying water at 10 km / h turntable speed

④ Rotation: Forward rotation (60 min) → Holding (5 min) → Reverse rotation (60 min)

⑤ Support angle: (0 ± 10) °

⑥ Steering angle: ± 1 °

⑦ Wheel loading: (3000 ± 300) N

⑧ Tire pressure: (0.25 ± 0.02) MPa

⑨ Chamber temperature: 5 ℃ ~ 10 ℃

* Retroreflective luminance meter

① Model: LTL-XL (DELTA, Denmark)

② Angle: (Observation angle, 2.29 °), (Lighting angle: 1.24 °)

Test result

As shown in Table 2, in the case of the composition for road surface markings according to Examples 1 to 5 according to the present invention, compared with the composition of the prior art according to Comparative Example 1, there is no yellowing phenomenon and good wear resistance, long-term durability It can be seen that it exhibits the advantage of being excellent in visibility without any color change and excellent in coating strength, so that it is less deformed and contaminated even in a high temperature environment.

On the other hand, when comparing Examples 4 and 5 and Examples 1 to 3, as the curing agent component, the polyaspartic acid ester obtained by modifying the polyaspartic acid ester represented by Chemical Formula 1 and the diethyltoluene diamine represented by Chemical Formula 2 is used. When it was included (Examples 4 and 5), it was found to have better abrasion resistance and moisture resistance than when the polyethyl aspartic acid ester modified with diethyltoluene diamine represented by Chemical Formula 2 was not included.

In addition, looking at Examples 4 and 5 including the polyaspartic acid ester modified with diethyl toluene diamine represented by Formula 2 as a curing agent component, the content of the polyaspartic acid ester modified with diethyltoluene diamine was 5 wt. It was found to have abrasion resistance and moisture resistance when included in% or more.

As described above, the two-component polyurea road surface coating composition according to the present invention contains aliphatic polyisocyanate as the main component, and by introducing polyaspartic acid ester as the curing agent component, has high mechanical properties, durability, weather resistance And a coating film for road marking having excellent visibility.

The present invention has been described above with reference to the embodiments shown in the accompanying drawings, but these are merely exemplary, and those skilled in the art to which various modifications and equivalent other embodiments are possible. Will understand. Therefore, the technical protection scope of the present invention should be defined by the following claims.

S101: cleaning step
S102: mixing step
S103: Coating film formation step
S104: curing step

Claims (9)

Subjects including polyisocyanates; And
A two-component polyurea road surface coating material composition comprising a; curing agent comprising a polyaspartic acid ester represented by Formula 1, a polyaspartic acid ester represented by Formula 2, a pigment, and calcium carbonate;
The polyaspartic acid ester represented by Formula 1 is 40 to 45 wt% based on the total components of the curing agent,
The polyaspartic acid ester represented by the formula (2) is a two-component polyurea road surface coating composition, characterized in that 5 to 10 wt% based on the total component of the curing agent.
[Formula 1]

[Formula 2]

delete According to claim 1,
The polyisocyanate is an aliphatic polyisocyanate (Aliphatic polyisocyanate) characterized in that it comprises a two-component polyurea road surface coating material composition. According to claim 3,
The subject is a two-component polyurea coating composition for road surface marking, characterized in that it contains 80 to 100 wt% of the aliphatic polyisocyanate based on the total components of the subject. According to claim 1,
The pigment and calcium carbonate in the curing agent is a two-component polyurea road surface coating composition, characterized in that the range of pigments 1 to 30 wt% and calcium carbonate 15 to 45 wt% based on the total component of the curing agent. According to claim 1,
A two-component polyurea coating composition for road surface marking, comprising 20 to 50 wt% of a subject and 50 to 80 wt% of a curing agent, based on the total components of the two-component polyurea road surface coating composition. According to claim 3,
The aliphatic polyisocyanate is hexamethylene diisocyanate (HDI), 4,4'-dicyclohexylmethane diisocyanate (HMDI), isophorone diisocyanate (isophorone) Diisocyanate, IPDI), hexamethylene diisocyanate trimer, isophorone diisocyanate trimer, at least one selected from or a mixture thereof, characterized in that the two-component polyurea road surface coating material composition. According to claim 1,
The curing agent, based on the total component of the curing agent, UV stabilizer 0 to 10 wt%, thickener 0 to 10 wt%, antioxidants 0 to 10 wt% of the two-component polyurea road surface coating composition characterized in that it further comprises . A method of forming a coating film for road surface coating by coating the road surface coating composition for a two-component polyurea surface according to any one of claims 1 to 3 to 8.

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