JPH03224903A - Marking material on road and marking with its substance - Google Patents

Abstract

PURPOSE:To obtain a marking material with an excellent draining and visible-at- night characteristics, by binding a mixture composed of glass beas with a specified particle size, colored pigments and granular aggregates with a specified size, with a resin. CONSTITUTION:The material having a good draining feature is made by mixing and kneeding wet 10 parts of urethane resin added to 100 parts of a mixture of 10-70 parts of glass beas with 0.1-2.5mm particle size, 5 parts of titanium oxide, and 15-87 parts of ceramic white aggregates with 0.5-3.0mm particle size by weight respectively. This material is used for a marking material on the road. The surface of the marked road in this condition is ground by passing cars and hence, the glass beas are exposed to the surface. As the result, when car head light irradiated the beas, visual faculty at night is accorded due to the reflected light.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a novel road marking material, and more particularly to a road marking material that is permeable and has good surface drainage properties, and a road marking body made of the material. .

[Conventional technology]

Traditionally, road marking materials such as room-temperature, heated, melt-type, and adhesive tapes used for crosswalks, center lines, boundary lines, outside lines, etc. are completely impermeable to rainwater, so these materials cannot be used. During rainy weather and nighttime, the glass beads that provide retroreflectivity on the surface of road markings made of these materials are submerged in the rainwater film, and the retroreflection disappears, making them invisible. Attempts have been made to improve the road surface by scattering glass beads or attaching protrusions to the road surface, but such methods tend to cause the large glass beads to easily fall off and the protrusions to become deformed and become flat. It is difficult to maintain visibility during the day, so it is rarely used today.

Furthermore, road markings made of conventional road marking materials have another problem in that during rainy weather, rain water accumulates on the road surface, making cars and the like very susceptible to slipping.

[Problem that the invention seeks to solve]

Therefore, the present invention has been devised and developed in order to solve the above-mentioned problems.The present invention has been devised and developed in order to solve the above-mentioned problems. By applying a road marking material consisting of the following composition, rain water does not accumulate on the surface during rainy days, and water drains easily, resulting in a road marking material with excellent visibility and slip resistance during rainy days and at night. was able to complete.

[Means and effects for solving the problem] According to the present invention, 10 to 70 glass beads with a particle size of 0.1 to 2.5 mm are used.
parts by weight, color pigment 3-15 parts by weight and particle size 0.5-3
．． 5 to 20 parts by weight of a binder resin is added to a total of 100 parts by weight of a mixture consisting of 15 to 87 parts by weight of Omm granular aggregate, and the mixture is mixed and stirred to obtain a permeable surface with good drainage properties. The above problems were solved by applying the marking material to the road surface in a thickness of 3 to 6 mm and optionally further scattering glass beads with a particle size of 0.1 to 2.5 mm.

The glass beads with a particle size of 0.1 to 2.5 mm used in the present invention are exposed on the surface of the marking body made of the road marking material when it is worn away by passing vehicles, etc., and are retroreflected. It provides night visibility. However, if the particle size is 0.1 mm or less, the glass beads will be submerged in rainwater during rainy weather, making it impossible to obtain night visibility in rainy weather.

Furthermore, when the particle size is 2.5 m or more, the glass beads are colorless and the whiteness of the road marking material is reduced, resulting in poor daytime visibility. If the amount of glass beads mixed is less than 10 parts by weight, there are too few glass beads, resulting in low reflective brightness and poor night visibility, and if it is more than 70 parts by weight, the glass beads are colorless, resulting in a decrease in whiteness of the road marking material. This results in poor daytime visibility. Therefore, the glass beads used in the present invention have a grain size of 0.1 to 2.5, preferably 0.5 to 2.0, and are mixed in an amount of 10 to 70 parts by weight, preferably 15 to 50 parts by weight. is suitable.

The colored pigment used in the present invention not only imparts a hue to the road marking material, but also colors the lower surface of the glass beads, thereby efficiently retroreflecting vehicle headlight light and significantly improving visibility. However, when mixed with beads, it is necessary that the colored layer on the top surface of the sign be worn away by the passage of a vehicle, exposing the surface of the glass beads. Titanium oxide, yellow lead, etc. are used as coloring pigments, but if a color other than white or yellow is desired, other inorganic pigments or organic pigments can also be used. If the amount of the colored pigment used is 3 parts by weight or less, the retroreflectivity of the glass beads will be poor, resulting in a decrease in visibility. In addition, if the glass beads exceed 15 parts by weight, the retroreflectivity of the glass beads is excellent and visibility is good, but the colored pigments fill the voids that provide permeability to rainwater, resulting in a considerable decrease in the permeability of the marking material, resulting in a loss of visibility during rainy days. You will not be able to see the time. Therefore, the amount of color pigment used in the present invention is 3 to 1
5 parts by weight, preferably 5 to 10 parts by weight are suitable.

As the granular aggregate with a particle size of 0.5 to 3.0 nnn used in the present invention, in order to ensure the visibility of the road marking material,
Generally, granular aggregate colored white or yellow is used, but if the road marking material is a color other than white or yellow, a colored granular aggregate similar to the desired color is used. The material must be strong enough to withstand the passage of vehicles; for example, a ceramic product may be used.

In addition, as for the shape, it is necessary to make the voids large in order to provide permeability to rainwater, so an aggregate with a round shape as a whole is suitable. The particle size to be used next is preferably large in order to provide permeability to rainwater, but the maximum particle size should be determined depending on the thickness of the desired road marking material to ensure sufficient strength as a road marking material. need to be considered. Generally, the maximum thickness of road markings is considered to be about 6 mm, so the maximum particle size of the aggregate used is considered to be up to 3.0 mm. The use of aggregate with a particle size of 3.0 mm or more requires the thickness of the road marking to be 6 mm or more.
This is not desirable due to traffic safety issues such as bicycles and motorcycles falling over. However, in cases where the thickness does not pose a problem in terms of traffic safety, such as in the case of buried signs, it is possible to use aggregate with a particle size of 3.0 mm or more.

On the other hand, it is necessary to fully consider the relationship between the minimum particle size and the permeability of rainwater, and generally, for permeable color pavement, the particle size is 0.5
mm is considered the lowest. However, the essential components of the present invention include powdered titanium oxide and glass beads with a particle size of 0.1 to 2.5 mm, and since there are quite a lot of components with a particle size of 0.5 mm or less, it is difficult to understand why the particle size is 0.5 + nm. However, as a result of examining the permeability and reflectivity at night on rainy days, even if the permeability is considerably lower than that of water-permeable colored paving materials, the visibility at night on rainy days is sufficient. It turns out that there is. This is because submersible color pavement requires considerably superior permeability (water permeability) due to the long travel time when rainwater is drained underground or to the ends over a large area. As a road marking material of ~45 cm, it is thought that glass beads can protrude from the surface during rainy weather if it has a permeability (water permeability) of about 1/8 of that of permeable color pavement, and the smallest particle Diameter 0.5
It has been found that it is possible to use aggregates of mm. If the amount of aggregate mixed in is less than 15 parts by weight, glass beads will be used to supplement the aggregate, which will exceed the upper limit of 70 parts by weight for glass beads, so the color of the glass beads themselves will be affected. The hue of the road marking material will be different from the original hue, and if it exceeds 87 parts by weight, the amount of glass beads used must be reduced, so the amount of glass beads used must be less than the lower limit of 10 parts by weight. As a result, reflected brightness decreases and night visibility worsens. Therefore, the granular aggregate used in the present invention has a particle size of 0.6 to 5, G theory,
Preferably it is 0.6 to 2°5III11, and the mixed amount is 1
5 to 87 parts by weight, preferably 40 to 80 parts by weight are suitable.

As the binder resin used in the present invention, a resin must be selected that has sufficient strength to bind the glass beads and granular aggregate and has good weather resistance.

In particular, in terms of strength, it is necessary that the surface of the road marking material has good water drainage and has a strength that does not easily chip the edges.
It also requires a certain degree of flexibility to prevent cranking on the asphalt road surface, and has a compressive strength of 120 to 600 kg.
f/c+fl (The tensile strength of the binder resin itself is considered to be 200 to 400 kgf/cn and the elongation rate is 5 to 30%.) Such binder resins include moisture-curing urethane resin, epoxy resin, polyamide resin,
Thermoplastic polyester resin, polyisoprene resin, styrene ethyl acrylate non-polymer resin, glass beads,
It is used by mixing and heating with colored pigments and granular pastes,
Acrylic syrup and unsaturated polyester can also be used as two-component types. If the amount of binder resin added is less than 5 parts by weight, the compressive strength will be less than 120 kgf/crR and edge chipping will easily occur, and if it is more than 20 parts by weight, the compressive strength will be sufficient, but the binder resin will reduce the permeability of rainwater. Since it fills the voids and considerably reduces permeability, visibility during rainy days and at night becomes impossible. Therefore, the appropriate amount of binder resin used in the present invention is 5 to 20 parts by weight, preferably 9 to 15 parts by weight.

The present invention will be explained in more detail below using Examples and Comparative Examples.

Example 1 Glass beads with a particle size of 0.1 to 2.5 mm: 10 parts by weight Titanium oxide: 3 parts by weight Particle size: 0.1 to 2.5 mm.
10 parts by weight of a moisture-curing urethane resin was added to 100 parts by weight of a mixture of 87 parts by weight of ceramic white aggregate of 5 to 3.0 cm, and the mixture was mixed and stirred to obtain a road marking material with good water drainage on the surface. .

Example 2 Glass beads with a particle size of 0.1 to 2.5 mm: 15 parts by weight Titanium oxide: 5 parts by weight Particle size: 0
．． 10 parts by weight of a moisture-curing urethane resin was added to 100 parts by weight of a mixture of 5 to 3.0 mm ceramic white plaster: 80 parts by weight, and the mixture was mixed and stirred to obtain a road marking material with good surface drainage.

Example 3 Glass beads with a particle size of 0.1 to 2.5 mm: 50 parts by weight Titanium oxide = 10 parts by weight Particle size 0.
10 parts by weight of a moisture-curing urethane resin was added to 100 parts by weight of a mixture of 40 parts by weight of ceramic white plaster having a thickness of 5 to 3.0 mm, and the mixture was mixed and stirred to obtain a road marking material with good water drainage on the surface.

Example 4 Glass beads with a particle size of 0.1 to 2.5 mm 0 parts by weight Titanium oxide: 15 parts by weight Particle size 0.
10 parts by weight of a moisture-curing urethane resin was added to 100 parts by weight of a mixture containing 15 parts by weight of a ceramic white plaster of 5 to 3.0 parts, and the mixture was mixed and stirred to obtain a road marking material with good surface drainage.

Example 5 Glass beads with a particle size of 0.1 to 2.5 mm: 30 parts by weight Titanium oxide: 15 parts by weight Particle size 0.
5 to 3.0 mm ceramic white plaster: 5 parts by weight of a mixture of 55 parts by weight of moisture oxidation urethane resin was added in 5 parts by weight, and the mixture was mixed and stirred to obtain a road marking material with good surface drainage.

2 Example 6 10 parts by weight of a moisture-curing urethane resin was added to 100 parts by weight of the mixture of glass beads, titanium oxide, and granular aggregate of Example 5, and the mixture was mixed and stirred to obtain a road marking material with good water drainage on the surface. Ta.

Example 7 15 parts by weight of moisture-curing urethane resin was added to 100 parts by weight of the mixture of glass beads, titanium oxide, and granular aggregate of Example 5, and the mixture was mixed and stirred to obtain a road marking material with good water drainage on the surface. .

Example 8 20 parts by weight of a moisture-curing urethane resin was added to 100 parts by weight of the mixture of glass beads, titanium oxide, and granular aggregate of Example 5, and the mixture was mixed and stirred to obtain a road marking material with good water drainage on the surface. .

Example 9 Resin 9, in which 6 parts by weight of epoxy resin and 3 parts by weight of modified aliphatic polyamine were mixed with 100 parts by weight of the mixture of glass beads, titanium oxide, and granular aggregate of Example 5 immediately before use.
Parts by weight were added and mixed and stirred to obtain a road marking material with good surface drainage properties.

Example 10 2 kg of moisture-curing urethane resin was added to 20 kg of the mixture of glass beads, titanium oxide, and granular aggregate of Example 5,
A road marking material with a surface with good water drainage obtained by mixing and stirring was coated, and glass beads with a particle size of 0.1 to 2.5 mm were sprinkled on top to obtain a road marking material with a surface with good water drainage. .

Comparative Example 1 Among the permeable road marking materials of Example 2, the particle size of the glass beads was 0. A mixture using particles with a diameter of 1 mm or less. Comparative Example 2 A mixture using the permeable road marking material of Example 2 with glass beads having a particle size of 2.5 mm or more.

Comparative Example 3 Glass beads with a particle size of 0.1 to 2.5: 30 parts by weight Titanium oxide: 20 parts by weight Particle size 0.
5-3.0 body ceramic white plaster: 50 parts by weight of a mixture of 100 parts by weight and 2 parts of moisture-curing urethane resin.
0 part by weight was added and mixed and stirred to obtain a mixture.

Comparative Example 4 As a water-permeable color paving material, 4 parts of epoxy resin were added to 100 parts by weight of ceramic white aggregate with a particle size of 0.5 to 3.0.
6 parts by weight of a resin prepared by mixing 1 part by weight and 2 parts by weight of a modified aliphatic polyamine immediately before use were added, and the mixture was mixed and stirred to obtain a mixture.

Comparative Example 5 Melting type road marking paint that complies with JIS K5665 Type 3 No. 1. Product Name: Near Tom Line "15 White (manufactured by Atom Chemical Paint Co., Ltd.) Comparative Test 1 Using the road marking materials with good surface drainage properties of Examples 1 to 9, the mixtures of Comparative Examples 1 to 4, and the paint of Comparative Example 5. We conducted tests to confirm permeability and night visibility in rainy weather.

The test results are shown in Table 1.

15 Test method: The road marking materials of Examples 1 to 9 and the mixtures of Comparative Examples 1 to 4 were flattened with a trowel to a thickness of 3 to 5III11 on a straight plate measuring 15 cm x 25 cm. After curing for a day, the paint of Comparative Example 5 was heated to 200°C.
Heat and melt it and paint it on an iron plate with 15cI11 width and 25cm length using O7 applicator for 1°5mm thickness. After cooling, polish the surface with a wire brush and remove the internal beads if glass beads are mixed in. Expose it and use it as a specimen. To measure permeability, a glass tube with an inner diameter of 3.6 cm and a length of 30 cm and a length scale is set up in the center of the specimen, the lower part of the glass tube is wrapped with clay, and water is poured into the glass tube until about the 8th minute. Measure the time (seconds) until the water level reaches 1 cm from 11CI11 with a stopwatch. Visibility at night in rainy weather was evaluated visually by shining vehicle headlights from a point 10 m away from the specimen in rainy weather.

16 No. ■ table ◎ can be seen very well ○ is clearly visible Δ is slightly visible × cannot be seen It represents.

From the results in Table 1, it is thought that the permeability worsens as the amount of titanium oxide or binder resin added increases, and that approximately 80 seconds is the limit of permeability. Also, particle size of 0.1 to 2.5+
15 parts by weight or more of mn glass beads, 5 parts by weight of titanium oxide
It can be seen that when the amount is more than 1 part by weight and the permeability is within 40 seconds, the visibility in rainy weather and at night is very excellent. However, those that have a permeability of 80 seconds or more, those that do not use glass beads or titanium oxide, and those that use glass beads whose particle size is too small have no reflectivity at night in rainy weather. If the particle size of the glass beads used here is too small, the reflectivity at night on rainy days will be lost for the following reason.

In other words, when using the road marking material of the present invention, which has a surface with good drainage properties, rainwater does not drain completely from the road marking material, but instead accumulates in the voids or on the surface due to capillary action. When rain water flows on the road surface, it is sucked together and improves the drainage of the surface of the road marking, so in the case of glass beads with a particle size of 0.1 mm or less, the rain water that has accumulated slightly on the surface can be absorbed. It is submerged in the water film and becomes non-reflective at night on rainy days.

Comparative Test 2 Confirmation test of daytime visibility, reflective brightness, and wet slip resistance using the road marking materials with good surface drainage properties of Examples 1 to 5, the mixture of Comparative Example 2, and the paint of Comparative Example 5. I did this.

The test results are shown in Table 2.

Test method: Using the specimen of Comparative Test 1, daytime visibility was visually evaluated for whiteness from a point 10 meters away from the specimen. Reflection brightness was measured using Ecolux made in France. The wet skid resistance value was measured using a British porta-pull skid resistance tester.

9 No. table Note 2: Daytime visibility ◎ is very white and visible ○ is visible in white △ is slightly lacking in whiteness × is not white enough It represents.

Note 3: The unit of reflected brightness is m c d / I2. ux
・The higher the value, the brighter it is.

The unit of slip resistance value when pouring = wet is BPN (British Portable Number), and the higher the number, the brighter it is.

0 From the results in Table 2, it can be seen that daytime visibility is white when the glass beads are 50 parts by weight or less and the titanium oxide is 5 parts by weight or more. However, it can be seen that when large glass beads with a particle size of 2.5 mm or more are used (Comparative Example 2), the whiteness is insufficient and daytime visibility is poor. From the measurement of reflected brightness,
In order to obtain the same level of night visibility as the commonly used road marking paint (Comparative Example 4), 10 parts by weight or more of glass beads is required. The slip resistance value when wet is improved by about 10 BPN units compared to the commonly used road marking paint (Comparative Example 4).

Comparative Test 3 A compressive strength test was conducted using the road marking materials of Examples 5 to 9 with good surface drainage properties, the mixture of Comparative Example 4, and the paint of Comparative Example 5.

The test results are shown in Table 3.

Test method: A mixture of the road marking materials with good surface drainage properties of Examples 5 to 9 and Comparative Example 4, and Comparative Example 5 heated and melted at 200°C.
Each of the paints was molded in a 2 x 2 x 2 cm iron mold, and after curing for one day, the compressive strength was measured using a compressive strength tester.

Table 3 Note 5: The unit of compressive strength is K N / afl (kgf
/c+fl l, the three types of JIS K5665 standards are 1.177 (120) or more.

From the results in Table 3, it is considered possible to use the binder resin in an amount of 5 parts by weight or more, but compared to the case of the water-permeable colored paving material (Comparative Example 4), In order to prevent the phenomenon of edge chipping of road marking materials with good water drainage properties, it is considered preferable to use 9 parts by weight or more of the binder resin.

Comparative Test 4 (In-house Test Road Surface Painting) An in-house test road surface coating was carried out using the road marking feed of Example 10, which has a surface with good drainage properties, and the paint of Comparative Example 5.

The test results are shown in Table 4.

Test method: The road marking material of Example 10, which has a surface with good drainage properties, was poured into a movable form and rolled with rollers, and then the particle size was reduced to 0.1.
~2.5mm glass beads were scattered, and the JI of Comparative Example 5 was
Melting type road marking paint that complies with SK5665 Type 3 No. 1 is melted by heating to 200°C, and is reduced to a particle size of 0.000°C before application using a special application machine. Glass beads having a length of 1 to 085 m were scattered, and 20 rr specimens were prepared for each specimen. Visibility was confirmed at night by shining headlights from a vehicle while water was being sprinkled on the beads.

From the results in Table 4, JISK5665 Class 3 1 of Comparative Example 5
Melting type road marking materials conforming to the No. 1 issue have good visibility at night because they wipe off water after being painted, but after two weeks, they become difficult to wipe off and visibility has decreased to a point where they can be seen a little. The road marking material of Example 10 with good surface drainage properties was 3.
Even after the monthly income has passed, it remains very visible, just like after it was painted.

〔Effect of the invention〕

According to the road marking material of the present invention, which has a surface with good drainage properties,
With the exception of heavy rains such as localized torrential rains and flooded roads, road markings that cannot be seen during rainy days or at night can be seen for a long period of time, resulting in an innovative effect.

23- Procedural amendment March 1, 1990 1゜2゜3゜4゜1゜Gyu no Lisiga 1990 Patent Application No. 18950 Name of the invention Road marking material and road marking made of the material Amendment Chew with a cow: Name of patent applicant: Atom Chemical Paint Co., Ltd.

Claims (1)

[Scope of Claims] 1. A road marking material having a surface with good water drainage, characterized in that a mixture of glass beads, colored pigments, and granular aggregate is bonded with a resin. 2. The road marking material with good surface drainage properties according to claim 1, which has a permeability indicating the surface water drainage properties within 80 seconds. 3. 10-70 glass beads with a particle size of 0.1-2.5mm
Adding 5 to 20 parts by weight of a binder resin to a total of 100 parts by weight of a mixture consisting of 3 to 15 parts by weight of colored pigment and 15 to 87 parts by weight of granular aggregate with a particle size of 0.5 to 3.0 mm; The road marking material according to claim 1, which is obtained by heating, mixing and stirring. 4. The road marking material having a surface with good drainage properties according to claim 1, wherein the glass beads have a refractive index within the range of 1.5 to 1.9. 5. The road marking material having a surface with good drainage properties according to claim 1, wherein the granular aggregate is a colored ceramic product having a round shape as a whole. 6. A road surface marking body having a surface with good drainage properties, which is obtained by coating the road surface marking material according to any one of claims 1 to 5 on a predetermined location on a road surface. 7. The road marking material according to any one of claims 1 to 5 is coated on a predetermined location on the road surface, and further coated with a particle size of 0.
A road marking with good water drainage on the surface, made by scattering glass beads of 1 to 2.5 mm.