KR101043225B1 - Paint compositions for surface sign of paved road and construction method of surface sign using the same - Google Patents

Abstract

PURPOSE: A paint composition for a surface sign of paved road is provided to enhance durability and visibility of a road using a paint composition with excellent heat resistance and adhesive strength. CONSTITUTION: A construction method of a surface sign using a paint composition for the surface sign of a paved road comprises the steps of: removing foreign materials of a paved road(10); mixing 20 weight% of binder, 65 weight% of reflector, 10 weight% of aggregates, and 5.0 weight% of pigment to prepare a paint composition and heating and stirring the paint composition at 140-200 °C, and melting the binder; applying the paint composition to the road and welding the paint composition on the road to form a coating layer(20) of set patterns; and hardening the coating layer.

Description

Paint compositions for surface sign of paved road and construction method of surface sign using the same}

The present invention relates to a road coating material composition for road marking and a road marking construction method using the same, and more particularly, to increase the bonding force with the road surface, to prevent cracking, to increase durability, and to increase visibility and increase visibility. The present invention relates to a road surface coating material composition for road marking and a road marking construction method using the same.

In general, road markings, center lines, pedestrian crossings, parking lines, and character symbols that guide the driver's defensive driving and the vehicle's driving direction on the road surface are painted on the road surface. These road signs have the ability to maintain the driving order of all vehicles driving on the road and allow the driver to drive safely, and to maintain a constant reflex reflection so that the driver can identify the lane, especially at night or in rainy weather.

Conventional road marking methods include fusion, room temperature, and heating methods, and a fusion method, which is a construction method capable of obtaining the highest durability, is widely used for painting road signs.

The fusion-type road marking method is performed by heating powder-like paint at high vapor pressure using a mechanical device called an air blower, and painting the road surface through a paint machine. When the powder paint is heated and painted on the road surface, hot heat melts the asphalt surface layer, and the petroleum component layers become adhesive, thereby making the asphalt surface and the paint adhesive. Therefore, in the case of asphalt roads containing petroleum, unlike concrete or cement roads that do not contain petroleum, road markings painted on the road surface may have excellent adhesion and durability with only simple dust removal and debris removal. . However, even when painted on asphalt roads, a significant portion of the adhesive strength is weakened by moisture as time passes, and paints are easily released and worn away, resulting in loss of clarity and difficulty in identifying roads during rain or at night. .

Korean Patent Registration Publication No. 89-5084, which is one of the prior art documents on the road surface marking method, applies an alkali-resistant primer containing a chlorinated rubber resin, a cardura-modified acrylic resin, and a bisphenol-based epoxy additive as a binder. A road sign painting method for painting is disclosed. In such a process, since the primer coating process must be preceded before the paint painting process, a lot of construction costs including labor costs are required.

And the Republic of Korea Patent No. 10-0740296 discloses a construction method using a thermoplastic hot melt tape for road marking. The disclosed construction method has a problem that the process is very complicated, such as cutting the hot melt tape to a constant formation and mounting it on the road surface and then applying heat to the hot melt tape to fuse the surface of the road.

In addition, the hot-melt material mainly composed of EVA resin is melted by heat, applied to the adherend, solidified by cooling, and adhered to it.The adhesive is fast, harmless to the human body, and chemically stable. There is a problem that the strength is low.

The present invention was created to improve the above problems, while using the conventional advantages of the hot melt material, which is fast and harmless to the human body and is chemically stable, increases the heat resistance and adhesive strength of the hot melt material, thereby making the bond strength with the road surface durable. An object of the present invention is to provide a road surface coating material composition for road marking and road surface construction method using the same.

Another object of the present invention is to provide a road coating material composition for road marking and road marking construction method using the same, which can increase visibility with high reflectance.

Road coating material composition for road marking of the present invention for achieving the above object comprises a binder 5 to 40% by weight, reflector 50 to 80% by weight, aggregate 5 to 15% by weight, pigment 0.5 to 10% by weight, the binder The heat-melt at 140 to 200 ° C is fused and bonded to the road surface of the road, the binder is characterized in that the hot melt contains polyamide for increasing heat resistance, rubber particles for increasing adhesion.

The hot melt is based on an ethylene vinyl acetate copolymer, and is characterized in that it is formed by adding a terpene resin, rosin, wax, and talc.

The reflector is characterized in that it comprises a glass bead and calcite to increase the reflectance of the glass bead.

And the road marking construction method of the present invention for achieving the above object comprises a cleaning step of cleaning the road surface to remove foreign matter on the pavement road surface; 5 to 40% by weight of a binder containing hot melt, polyamide, and rubber particles, 50 to 80% by weight of reflector, 5 to 15% by weight of aggregate, 0.5 to 10% by weight of pigment to form a coating composition, and then to 140 to 200 ° C. A melting step of melting the binder by heating and stirring; An application step of applying the coating composition to the road surface to form a coating layer having a set pattern by fusing the coating composition to the road surface; And a curing step of curing the coating layer.

After the completion of the coating step is characterized in that it further comprises a dividing step of forming a plurality of scratch lines drawn in a predetermined depth on the surface of the coating layer.

After the dividing step is completed, the scratch line absorbs light during the day to charge the photoluminescent material that emits at night characterized in that it further comprises a charging step of forming a plurality of light emitting bands.

As described above, according to the present invention, by adding polyamide and rubber particles to the hot melt adhesive, the conventional advantages of the hot melt material, which are fast and innocuous to the human body and chemically stable, can be improved while increasing heat resistance and adhesive strength. The bonding force of can be greatly improved.

In addition, by using calcite together with glass beads as the reflector, the reflectance can be increased to increase visibility.

1 is a perspective view showing a road marking constructed on the road surface according to an embodiment of the present invention.

Hereinafter, a road coating material composition for road marking according to a preferred embodiment of the present invention and a road marking construction method using the same will be described in detail.

In the present invention, the road sign means a sign formed on a road surface of a pavement such as a lane, a center line, a pedestrian crossing, a parking line, and a letter symbol.

Road coating material composition for road marking according to an embodiment of the present invention consists of a binder, a reflector, aggregate, pigment. Specifically, the binder is composed of 5 to 40% by weight, reflector 50 to 80% by weight, aggregate 5 to 15% by weight, pigment 0.5 to 10% by weight.

In the present invention, the binder is mixed with a reflector, aggregate, and pigment, and is heated to 140 to 200 ° C. at the time of construction on the road surface to be fused to the road surface in a molten state. Such binders are based on hot melt adhesives and added with polyamide and rubber particles.

Hot melt adhesives are solid adhesives based on thermoplastics. Hot melt adhesive is a substance which melt | dissolves by heat, is apply | coated to a to-be-adhered agent, solidifies by cooling, and adhere | attaches without using water or a solvent at all. An example of the hot melt adhesive may be based on ethylene vinyl acetate copolymer and added by terpene resin, rosin, wax, and talc. For example, the composition is composed of 20 to 40 parts by weight of terpene resin, 2 to 8 parts by weight of rosin, 2 to 6 parts by weight of wax, and 5 to 10 parts by weight of talc based on 100 parts by weight of ethylene vinyl acetate copolymer.

Ethylene vinyl acetate copolymers are thermoplastically reheatable and act as chemically stable binders. Terpene resin functions to impart tack to the hot melt adhesive. In addition to the terpene resin, polyethylene resin, coumarone resin and the like may be applied. Rosin is used to impart adhesion with the terpene resin, and gum rosin obtained by distilling terebin oil is used. In addition, rosin derivatives may be used. The wax improves the melt flow upon melting the hot melt adhesive. As wax, polyethylene wax or paraffin wax is used. Since the wax improves the melt flow of the binder, when the binder is applied to the road surface, the wax can penetrate deeply into the road surface, thereby improving the adhesive strength with the road surface, thereby preventing the peeling phenomenon. When the amount of the wax is increased, the melt viscosity is reduced, but the dispersion may be lowered, thereby lowering the physical properties of the binder. Talc is used as a filler.

In addition to the above-mentioned materials, plasticizers such as diphenyl chloride and paraffin chloride, and antioxidants of paraalkyl phenols may be added.

The hot melt adhesive described above has a fast adhesion speed and harmless to the human body, and is chemically stable but has low heat resistance and low adhesive strength. Therefore, preferably, the binder applied to the present invention contains the above-mentioned hot melt adhesive polyamide for increasing heat resistance and rubber particles for increasing adhesion. 10 to 20 parts by weight of polyamide and 20 to 30 parts by weight of rubber particles are added to 100 parts by weight of the hot melt adhesive.

As the polyamide, a copolymer of any one or more of nylon 6, nylon 66, and nylon 12 can be used. As the rubber particles, acrylonitrile butadiene rubber (NBR), styrene butadiene rubber (SBR) or a mixture thereof may be used.

The binder is contained in an amount of 5 to 40% by weight throughout the coating composition. When the content is less than 5% by weight, the bonding strength with the road surface is lowered, and when the content exceeds 40% by weight, the curing rate is slowed.

The reflector is for retroreflecting light to increase visibility at night, and includes glass beads and calcite. Glass beads and calcite are preferably mixed in a weight ratio of about 5: 1-5. Glass beads use particles of 300 to 1000 μm. And the calcite is to increase the reflectance of the glass bead, using the same size particles as the glass bead. The calcite is a carbonate anhydrous mineral belonging to the hexagonal system, and the calcite particles are disposed around the glass bead particles to refract the light reflected from the glass beads, thereby improving visibility by increasing the luminance on the surface of the road marking. In addition, during the day, light is diffusely reflected to improve visibility. The reflector is contained in 40 to 80% by weight of the whole coating composition. When the content is less than 40% by weight, the visibility is lowered, and when the content exceeds 80% by weight, the fluidity and bonding strength of the coating composition are weakened.

Aggregate is used to increase the wear resistance of the coating film, it uses a particle size of 1000 to 2000㎛. It is preferable to use a silver gift as aggregate. Gifts improve friction and increase daytime visibility due to diffuse reflection. Such aggregate is preferably contained 5 to 15% by weight in the total coating composition. When the content of the aggregate is less than 5% by weight, the wear resistance is weak, and when the content of the aggregate exceeds 15% by weight, the fluidity of the coating composition is lowered.

The pigment may be used alone or in combination of two or more selected from known organic and inorganic pigments such as titanium dioxide, carbon black and iron oxide.

Hereinafter, the road marking construction method using the above-mentioned coating composition is demonstrated. The construction method according to an embodiment of the present invention comprises a cleaning step, a melting step, an application step, and a curing step.

First, a cleaning step of cleaning the road surface in order to remove foreign matter on the pavement road surface is performed. Cleaning is done by using a rotary brush attached to the cleaning vehicle and sprayed with water to remove debris. After removing the foreign substances, remove any water remaining on the road surface. In this case, it can be dried with a dryer or left to dry for a certain time.

Next, in the melting step, the coating composition is added to a conventional heating stirrer and heated and stirred at 140 to 200 ° C. to melt the binder. The heating stirrer is stirred so that the coating composition introduced therein is heated and melted to a constant temperature and mixed evenly. The heating stirrer includes a stirring vessel, a hopper provided at an upper portion of the stirring vessel, a burner provided at a lower portion of the stirring vessel, and heating the stirring vessel. The coating composition is the same as mentioned in the above embodiment. That is, 5 to 40% by weight of a binder containing a hot melt adhesive, polyamide, and rubber particles, 50 to 80% by weight of a reflector, 5 to 15% by weight of an aggregate, and 0.5 to 10% by weight of a pigment are mixed.

The coating composition melted in the melting step is applied in a pattern set on the road surface and fused to the road surface. The molten paint composition penetrates deep into the road surface to improve the adhesion strength with the road surface. The coating composition is applied to a road surface of a pavement with a predetermined thickness to form an application layer. After the coating layer is formed, a curing step of curing the coating layer by standing for a predetermined time is performed to finally form various types of road markings on the road surface.

On the other hand, as another embodiment of the construction method of the present invention after the completion of the coating step further comprises a division step of forming a plurality of scratch lines drawn in a predetermined depth on the surface of the coating layer.

Referring to FIG. 1, in the dividing step, scratch lines 30 are formed on the coating layer 20 in the longitudinal and transverse directions. In the illustrated example, the coating layer 20 formed on the road surface of the road 10 is divided into a lattice structure by the scratch line 30. The scratch line 30 may be formed by scratching or pressing the surface of the coating layer 20 in a lattice form before the coating layer 20 is cured. As an example, a grid line having a lattice structure may be formed by applying a predetermined pressure to a mesh network interwoven with a horizontal wire and a vertical wire by being woven on the top of the coating layer 20. As another example, the coating layer 20 may be scraped and formed to intersect in the horizontal and vertical directions by using a sharp tip tool.

On the other hand, the scratch line may be formed of parallel lines rather than a lattice structure intersecting in the horizontal and vertical directions as shown in FIG. 1. For example, a straight scratch line may be formed at regular intervals along the longitudinal direction of the coating layer.

Many grooves are formed on the surface of the coating layer by the scratch line described above, and light is diffusely reflected by these grooves to improve visibility. At the same time, the frictional force on the surface of the coating layer can be increased.

Another embodiment of the construction method of the present invention further includes a charging step of forming a plurality of light emitting bands by filling the photoluminescent material which absorbs light during the day and emits light at night after the division step is completed.

Phosphorescent material is a material that emits accumulated light at night or when light is blocked after absorbing and accumulating light energy from sunlight or an electric light source, and in the present invention, it is preferable that a phosphorescent material having an average particle diameter of 100 to 500 μm is applied. . The phosphorescent material is semipermanently repeatable in the absorption-accumulation-luminescence process. As the photoluminescent material, a conventionally known one or a commercially available one can be appropriately used. Examples thereof include chemically and optically excellent strontium aluminate materials and zinc sulfide materials.

Such a photoluminescent material has a higher luminance as absorbing strong light energy and a larger amount of the photoluminescent material. The photoluminescent material is preferably the longer the light emission time and the higher the luminance. The photoluminescent material is used in powder form by grinding the photoluminescent material having the photoluminescent property. It is preferable to use particles having a form in which a large amount of concavities and convexities are formed on the surface in order to increase the surface area rather than the spherical particles.

The phosphorescent material is filled in the fine groove of the scratch line. When the photoluminescent material is filled before the coating layer is cured, the photoluminescent material is bonded to the coating layer by the binder of the coating layer. In addition, after curing the coating layer, the scratch line may be filled with a phosphorescent material. In this case, after filling the phosphorescent material, a transparent binder may be applied to the surface of the light emitting band to prevent desorption of the phosphorescent material.

As such, by forming a light strip in the shape of a scratch line on the road sign, the road sign can be identified by self-luminescence even on a road surface in a region where the light of the vehicle does not reach during rainy weather or at night, thereby greatly helping safe driving.

Hereinafter, the coating composition of the present invention will be described through Examples. However, the following examples are intended to illustrate the present invention in detail, and the scope of the present invention is not limited to the following examples.

(Example)

A binder was prepared by adding polyamide and rubber particles to a hot melt adhesive composed of 30 parts by weight of terpene resin, 5 parts by weight of rosin, 4 parts by weight of polyethylene wax, and 7.5 parts by weight of talc with respect to 100 parts by weight of ethylene vinyl acetate copolymer. The binder was added 15 parts by weight of nylon 66 and 25 parts by weight of acrylonitrile butadiene rubber particles based on 100 parts by weight of the hot melt adhesive.

A coating composition was prepared by mixing 500 g of glass beads, 150 g of calcite, 100 g of aggregate, and 50 g of pigment in 200 g of the binder.

(Comparative Example)

The coating composition was prepared in the same manner as in the above example, but unlike the above example, a hot melt adhesive was used in which no polyamide and rubber particles were added as a binder.

Experimental Example

Road markings were formed on the road surface of the asphalt road using the coating compositions of Examples and Comparative Examples, and the slip resistance and the adhesion to the road surface were tested.

Slip resistance was measured for the coating film after spraying water according to the test method ASTM E-303: 2003, the adhesion was measured by the KSM5000 test method and the results are shown in Table 1 below.

division Example Comparative example Slip resistance 63 45 Adhesion (Kg _f / cm ² ) 29.5 23.8

Looking at the results of Table 1, it can be seen that the coating composition according to the embodiment of the present invention is significantly improved adhesion compared to the comparative example. In addition, the slip resistance was higher than that of the comparative example. This shows that the coating composition of the present invention is excellent in physical properties.

In addition, as a result of the luminance test measured using a retroflectometer LTL 2000SQ (DELTA, Denmark), it was confirmed that the luminance was improved by about 10% compared to the conventional road marking.

In the above, the present invention has been described with reference to one embodiment, which is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: road 20: coating layer
30: scratchline

Claims (6)

delete delete delete delete delete A cleaning step of sweeping the road by sweeping and spraying water using a rotating brush to remove foreign substances on the pavement;
20 parts by weight of a binder composed of 15 parts by weight of nylon 66 and 25 parts by weight of acrylonitrile butadiene rubber particles, glass beads of the same particle size and calcite are mixed in a weight ratio of 5: 1.5 with respect to 100 parts by weight of the hot melt adhesive, and the particle size is 65% by weight of a reflector of 300 to 1000㎛, 10% by weight of aggregate having a particle size of 1000 to 2000㎛, and 5.0% by weight of pigment to form a coating composition, and then melted to melt the binder by heating and stirring at 140 to 200 ℃ Steps;
An application step of applying the coating composition to the road surface to form a coating layer having a set pattern by fusing the coating composition to the road surface;
And a curing step of curing the coating layer.
After completion of the coating step, the horizontal mesh and the vertical wire intersect the mesh net is woven on the top of the coating layer to form a plurality of scratch lines crossing in the longitudinal and transverse direction on the surface of the coating layer to divide into a grid structure The dividing step further includes a filling step of absorbing light in the scratch line during the day and emitting light at night, and filling a photoluminescent material having a particle size of 100 to 500 μm to form a plurality of light emitting bands. Road marking method using the coating composition for road marking.

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