KR102398633B1 - Road marking tape containing cordierite particles - Google Patents

Abstract

A hot melt tape for road marking according to the present invention can be applied to a road surface through a thermal fusion, the hot melt tape comprising: a cordierite particle having an average particle diameter of 0.5-5 μm; a calcium carbonate particle having an average particle diameter of 15-30 μm; a hydrocarbon resin; ethylene vinyl acetate; and a glass bead.

Description

Fusing adhesive tape for road marking containing cordierite particles {Road marking tape containing cordierite particles}

The present invention relates to a fusion adhesive tape for road markings, including cordierite, which can be constructed in a simple manner through thermal fusion in a tape shape.

With the development of transportation means, the increase in the supply of automobiles, and the deepening of population concentration in downtown areas, the number of vehicles on the roads increases rapidly, and the roads are becoming more and more complex.

On roads where cars, etc. pass, various information such as lane division, direction of travel, speed limit, crosswalks, child protection areas, etc. on the road surface should be transmitted within the range that does not interfere with the driver's operation, and accordingly, through signs and road signs Various information can be delivered to the driver.

These paints typically include base resin, pigment, glass beads, and filling materials, and are divided into 1 to 5 types depending on the curing method or construction method. use many

Among these, the 4 types of fusion coatings have the advantage of being able to be installed quickly, but there is a problem that peeling occurs easily due to the difference in thermal expansion coefficient according to the contraction and expansion of the road surface and road surface due to the change of season, and there is a problem of easy wear. Accordingly, there is a need for the development of a fusion coating material having excellent adhesion to the road surface, not easily abrasion, and excellent durability.

Republic of Korea Patent Publication No. 10-1837148

An object of the present invention is to provide a fusion adhesive tape for road markings having excellent durability.

Another object of the present invention is to provide a fusion adhesive tape for road markings, which is easy to construct.

Another object of the present invention is to provide a fusion adhesive tape for road markings having excellent adhesion to the road surface.

The fusion adhesive tape for road marking according to the present invention includes cordierite particles having an average particle diameter of 0.5 to 5 μm, calcium carbonate particles having an average particle diameter of 15 to 30 μm, a hydrocarbon resin, ethylene vinyl acetate, and glass beads.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the average particle diameter ratio of the cordierite particles to the calcium carbonate particles may be 1:15 to 30.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the cordierite particles may be surface-modified with a silane-based surface modifier.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the hydrocarbon resin may have a melt viscosity of 200 to 350 cps at 200°C.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the ethylene vinyl acetate may have a melt index (ASTM D1238, 190°C, 2.16kg) of 320 to 550 g/10min.

The fusion adhesive tape for road marking according to an embodiment of the present invention contains 60 to 80 parts by weight of ethylene vinyl acetate, 2 to 10 parts by weight of polyethylene wax, 10 to 30 parts by weight of cordierite, 50 to 80 parts by weight based on 100 parts by weight of the hydrocarbon resin. It may include calcium carbonate and 20 to 40 parts by weight of glass beads by weight.

The fusion adhesive tape for road marking according to the present invention has durability by including cordierite particles having an average particle diameter of 0.5 to 5 μm, calcium carbonate particles having an average particle diameter of 15 to 30 μm, hydrocarbon resin, ethylene vinyl acetate and glass beads. It has the advantages of excellent, convenient construction, and excellent adhesion to the road surface.

Advantages and features of embodiments of the present invention, and methods of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present invention, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

The fusion adhesive tape for road marking according to the present invention includes cordierite particles having an average particle diameter of 0.5 to 5 μm, calcium carbonate particles having an average particle diameter of 15 to 30 μm, a hydrocarbon resin, ethylene vinyl acetate, and glass beads.

The fusion adhesive tape for road markings according to the present invention contains the cordierite particles, calcium carbonate particles, hydrocarbon resin, ethylene vinyl acetate and glass beads, so that it is possible to form a road marker with remarkably excellent adhesion to the road surface and excellent durability. there are advantages to

The fusion adhesive tape for road marking according to the present invention may include cordierite particles having an average particle diameter of 0.5 to 5 μm, preferably 0.7 to 3 μm. Cordierite, also called cordierite, is a mineral containing magnesium iron silicate. By including these cordierite particles in the road sign, the durability of the road sign itself can be further improved, and it is more robust through the bimodal effect according to the difference in particle size in relation to the relatively large calcium carbonate particles. It has the advantage of forming a road surface mark.

The fusion adhesive tape for road marking according to an embodiment of the present invention may contain 10 to 30 parts by weight, preferably 12 to 25 parts by weight of cordierite particles, based on 100 parts by weight of the hydrocarbon resin, When a small amount is included, it is difficult to exhibit the effect of improving durability, and when a large amount of cordierite particles is included, the adhesive force may be lowered.

In the fusion adhesive tape for road marking according to the present invention, the calcium carbonate may have an average particle diameter of 15 to 30 μm, preferably 17 to 28 μm, and by including these particles, the above-described bimodal effect is exhibited and the surface hardness is increased. It is possible to secure and form a road surface with excellent durability.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the average particle diameter ratio of the cordierite particles to the calcium carbonate particles may be 1:15 to 30, preferably 1:17 to 27, and such an average particle diameter ratio By satisfying , it is possible to form a more robust road surface by the bimodal effect. When the average particle diameter of the calcium carbonate particles does not satisfy the above-mentioned range and is small, there is a problem that durability improvement does not appear due to the bimodal effect. It may cause problems such as durability deterioration.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the calcium carbonate may be included in 50 to 80 parts by weight, preferably 55 to 75 parts by weight, based on 100 parts by weight of the hydrocarbon resin, and when a small amount of calcium carbonate is included It may cause a decrease in surface hardness, and if a large amount of calcium carbonate is included, a decrease in abrasion resistance may occur.

Preferably, the cordierite particles may be surface-modified with a silane-based surface modifier. Specifically, the silane-based surface modifier may be an alkylsilane-based surface modifier containing an alkyl group having 8 or more carbon atoms, preferably 8 to 12 carbon atoms, or a vinylsilane-based surface modifier containing a vinyl group at the terminal, preferably the alkylsilane-based surface. It may include a modifier and a vinylsilane-based surface modifier.

The alkylsilane-based surface modifier can significantly increase the compatibility between the cordierite particles and the hydrocarbon resin, and the vinylsilane-based surface modifier can improve the compatibility and adhesion to the road surface as well.

Specifically, when modifying the surface of the cordierite particles, the vinyl silane-based surface modifier: the alkylsilane-based surface modifier can be mixed and used in a weight ratio of 1: 3 to 5, and within this range, the adhesion to the road surface is secured and the cordier The compatibility of light can also be significantly improved.

The fusion adhesive tape for road markings according to the present invention includes a hydrocarbon resin. In this case, the hydrocarbon resin may be preferably a C5-based aliphatic olefin or a polymerization of a C5-based aliphatic olefin and a diolefin. Preferably, the hydrocarbon resin may have a melt viscosity of 200 to 350 cps at 200 ° C., preferably 220 to 320 cps, and a softening point of 107 to 116 ° C., preferably 108 to 115 ° C., and a weight average molecular weight of 1500 to 3500. , preferably 1800 to 2500.

In the fusion adhesive tape for road marking according to an embodiment of the present invention, the hydrocarbon resin satisfies the melt viscosity, softening point, and weight average molecular weight described above, thereby improving adhesion to the road surface and compatibility with calcium carbonate particles and cordierite particles. At the same time, it has the advantage of being able to construct quickly because it does not require excessively high temperatures for road sign construction.

The fusion adhesive tape for road markings according to the present invention includes ethylene vinyl acetate, and by including the ethylene vinyl acetate, flexibility and abrasion resistance can be secured. Specifically, in the fusion adhesive tape for road marking according to an embodiment of the present invention, the vinyl acetate content of the ethylene vinyl acetate may be 15 to 30 wt%, preferably 17 to 25 wt%, and when the vinyl acetate content is low, the abrasion resistance This may decrease, and if the vinyl acetate content is high, flexibility may be reduced.

In addition, the ethylene vinyl acetate may have a melt index (ASTM D1238, 190°C, 2.16kg) of 350 to 450 g/10min, preferably 320 to 430 g/10min, and by satisfying this range, compatibility with the hydrocarbon resin is ensured It has the advantage of being able to easily construct a road surface sign.

The fusion adhesive tape for road marking according to an embodiment of the present invention may contain 60 to 80 parts by weight, preferably 65 to 75 parts by weight of ethylene vinyl acetate, based on 100 parts by weight of the hydrocarbon resin. When the content of ethylene vinyl acetate is low, flexibility and abrasion resistance may be reduced, and when the content of ethylene vinyl acetate is high, adhesion to the road may be reduced.

The fusion adhesive tape for road marking according to an embodiment of the present invention may further include polyethylene wax, and weather resistance may be improved by including the polyethylene wax.

Specifically, the polyethylene wax may have a softening point of about 115 to 122 °C, and a melt viscosity of 280 to 420 cps at 140 °C, preferably 300 to 400 cps. By using polyethylene wax that satisfies this range, compatibility with hydrocarbon resin and ethylene vinyl acetate is ensured, and construction is convenient and the road surface has the advantage of exhibiting excellent weather resistance.

The fusion adhesive tape for road marking according to an embodiment of the present invention may contain 2 to 10 parts by weight, preferably 3 to 9 parts by weight of polyethylene wax, based on 100 parts by weight of the hydrocarbon resin, and when a small amount of polyethylene wax is included Weather resistance may be lowered, and when a large amount of polyethylene wax is included, abrasion resistance may be lowered.

The fusion adhesive tape for road marking according to an embodiment of the present invention may further include a UV stabilizer, and by including the UV stabilizer, it is possible to maintain a strong road marking for a long time even under strong ultraviolet rays outdoors. In this case, the UV stabilizer may use one commonly used for road markings, preferably a UV stabilizer used for a hydrocarbon resin, and more preferably a UV stabilizer selected from benzophenone-based or benzotriazole-based UV stabilizers. .

The fusion adhesive tape for road marking according to an embodiment of the present invention may contain 0.1 to 1 parts by weight, preferably 0.3 to 0.7 parts by weight, based on 100 parts by weight of the hydrocarbon resin. Durability may decrease, and if a large amount of UV stabilizer is included, adhesion may decrease.

The fusion adhesive tape for a road sign according to the present invention may include a glass bead, wherein the glass bead reflects the incident light through retroreflection, thereby improving the driver's visibility of the road sign, and the glass bead A commercially available product for a road sign may be used, but the present invention is not limited thereto.

The fusion adhesive tape for road marking according to an embodiment of the present invention may contain 20 to 60 parts by weight of glass beads based on 100 parts by weight of the hydrocarbon resin, and when a small amount of glass beads is included, retroreflectivity may be reduced, When a large amount of glass beads is included, the retroreflection performance may not be significantly improved, but durability may be reduced and the glass beads may be separated.

The fusion adhesive tape for road markings according to the present invention may include a pigment, and may give color to the fusion adhesive tape for road markings. In this case, the pigment may preferably use an inorganic pigment, and specifically, it may exhibit yellow or white color including iron oxide or titanium dioxide, but the present invention is not limited thereto.

The fusion adhesive tape for road marking according to an embodiment of the present invention may contain 3 to 8 parts by weight of a pigment based on 100 parts by weight of the hydrocarbon resin, and when a small amount of the pigment is included, the color of the road sign may not be sufficiently displayed, , If a large amount of pigment is included, durability may be reduced.

The present invention also provides a method for manufacturing a fusion adhesive tape for road marking, wherein the fusion adhesive tape for road marking according to the present invention includes cordierite particles having an average particle diameter of 0.5 to 5 μm, and calcium carbonate having an average particle diameter of 15 to 30 μm A first step of preparing a master batch by mixing particles, hydrocarbon resin, ethylene vinyl acetate and glass beads; and a second step of extruding the masterbatch.

Hereinafter, the present invention will be specifically described by way of Examples and Comparative Examples. The examples below are only for helping understanding of the present invention, and the scope of the present invention is not limited by the examples below.

[Production Example 1]

1. Preparation of surface-modified cordierite particles

100 g of cordierite particles having an average particle diameter of 1.1 μm were prepared, and 300 g of the surface modifier solution was impregnated. In this case, ethanol was used as a solvent for the surface modifier solution, and 8 g of trimethoxynonylsilane (hereinafter referred to as alkylsilane) and 2 g of vinyltrimethoxysilane (hereinafter referred to as vinylsilane) were uniformly mixed per 100 g of ethanol. A mixture was used.

After impregnating the cordierite particles in the surface modifier solution, stirring at 35 ℃ for 1 hour, separating the solid content and drying for 24 hours in a 40 ℃ dryer to finally prepare the surface-modified cordierite particles.

2. Manufacture of fusion adhesive tape for road marking

A hydrocarbon resin obtained by polymerization of a C5-based aliphatic olefin and a diolefin having a melt viscosity of 260 cps at 200 ° C, a softening point of 111 ° C, and a weight average molecular weight of about 2,000, a vinyl acetate content of 19 wt %, and a melt index (ASTM D1238) , 190°C, 2.16kg) of about 400 g/10min, polyethylene wax with a softening point of about 118°C and a melt viscosity of about 350 cps at 140°C, cordierite particles with an average particle diameter of 1.1 μm, average Calcium carbonate, glass beads, benzophenone-based UV stabilizer, and titanium dioxide pigment having a particle diameter of 25 μm were mixed at 150° C. for 30 minutes, and then, using an extruder, a fusion adhesive tape with a thickness of 2 mm and a width of 17 mm for road markings was prepared.

At this time, the glass beads were mixed in 30 parts by weight relative to 100 parts by weight of the hydrocarbon resin, the pigment was mixed in 5 parts by weight relative to 100 parts by weight of the hydrocarbon resin, and the UV stabilizer was mixed in 0.5 parts by weight relative to 100 parts by weight of the hydrocarbon resin, and the remaining mixing ratio is shown in Table 1 by weight. it was

[Preparation Examples 2 to 13]

It was prepared in the same manner as in Preparation Example 1, but each composition was mixed in the weight ratio shown in Table 1 to prepare a fusion adhesive tape for road markings. However, in Preparation Example 11, cordierite was used without any treatment, in Preparation Example 12, only trimethoxynonylsilane was used as a surface modifier of cordierite, and in Preparation Example 13, a surface modifier of cordierite was used. As a result, only vinyltrimethoxysilane was used. In Preparation Example 14, a calcium carbonate having an average particle diameter of 5 μm was used, and in Preparation Example 15, a calcium carbonate having an average particle diameter of 55 μm was used.

production example hydrocarbon resin EVA PE wax cordierite calcium carbonate note One 100 70 7 15 65 2 100 72 6.5 14 63 3 100 68 8 18 69 4 100 55 7 15 65 5 100 83 7 15 65 6 100 70 1.5 15 65 7 100 70 15 15 65 8 100 70 7 - 65 9 100 70 7 6 65 10 100 70 7 15 85 11 100 70 7 15 65 Cordierite without surface modification 12 100 70 7 15 65 Cordierite surface-modified with alkylsilane alone 13 100 70 7 15 65 Cordierite surface-modified with only vinyl silane 14 100 70 7 15 65 Calcium carbonate with small particle size 15 100 70 7 15 65 Calcium carbonate with large particle size

Measurement of physical properties of fusion adhesive tape for road markings

A test sample was prepared by thermocompressing each of the fusion adhesive tapes for road markings prepared in Preparation Example on an asphalt concrete specimen at 170° C. with a roller. For the prepared sample, the adhesive strength was measured according to SPS-KTS.1102-1890, the abrasion resistance was measured according to KS M 6080:2014, and the prepared sample was aged for 168 hours according to KS M ISO 4892-3. After carrying out, the weather resistance was calculated by comparing the initial wear resistance and the results are shown in Table 2.

production example Adhesive strength (N/mm ² ) Wear resistance (mg) Weather resistance (%) One 2.3 125 98 2 2.1 130 98 3 2.2 132 97 4 2.0 188 96 5 1.4 122 95 6 2.2 142 84 7 2.0 197 93 8 1.8 172 85 9 1.9 155 91 10 1.4 115 95 11 1.8 150 92 12 2.0 140 94 13 2.2 165 95 14 2.0 155 97 15 1.9 164 97

Referring to Table 2, it can be seen that the road signs of Preparation Examples 1 to 3 exhibited an adhesive strength of 2.1 N/mm ² or more, abrasion resistance of 135 mg or less, and a weather resistance of 97% or more. It can be seen that when the non-surface-modified cordierite is included as in Preparation Example 11, physical properties similar to those containing a small amount of cordierite are exhibited, and when the particle size of calcium carbonate is large or small, it can be confirmed that the abrasion resistance is rather lowered.

Claims (6)

A fusion bonding method for road markings comprising cordierite particles having an average particle diameter of 0.5 to 5 μm and surface-modified with a silane-based surface modifier, calcium carbonate particles having an average particle diameter of 15 to 30 μm, hydrocarbon resin, ethylene vinyl acetate and glass beads tape. The method of claim 1,
The cordierite particle: the average particle diameter ratio of the calcium carbonate particles is a fusion adhesive tape for road marking, characterized in that 1:15 to 30. delete The method of claim 1,
The hydrocarbon resin has a melt viscosity of 200 to 350 cps at 200 °C. The method of claim 1,
The ethylene vinyl acetate has a melt index (ASTM D1238, 190 ℃, 2.16kg) of 320 to 550 g / 10 min. The method of claim 1,
The fusion adhesive tape for road marking includes 60 to 80 parts by weight of ethylene vinyl acetate, 2 to 10 parts by weight of polyethylene wax, 10 to 30 parts by weight of cordierite, 50 to 80 parts by weight of calcium carbonate, and 20 to 40 parts by weight based on 100 parts by weight of the hydrocarbon resin. A fusion adhesive tape for road markings, comprising a weight part of glass beads.