JP5445825B2 - Mica painted molded body - Google Patents

Description

  The present invention relates to a mica-coated molded body, and more specifically, by defining the surface of the molded body to which the mica paint is applied to a predetermined roughness, the arrangement direction of the coated mica crystals is made different. In particular, the present invention relates to a mica-painted molded body that can improve the visibility by reflected light.

  Nowadays, in order to improve visibility at night, paintings for reflecting light from automobile headlights are often applied to concrete fences and utility poles installed on the roadside. In this way, by applying the coating capable of reflecting the light of the headlight, it is possible to easily recognize a fence, a utility pole, and the like even on a road with poor lighting.

  As a coating method for reflecting such light, a method of mixing aluminum powder or mica (mica powder) into a colored paint or a clear paint has been proposed. However, when aluminum powder comes into contact with water, it reacts violently to a high temperature and may cause a fire, so mica is often used from the viewpoint of workability and safety.

  As described above, the method of applying the paint mixed with mica to the product or block is not limited to the purpose of improving the visibility of the object, but to improve the aesthetics of the surface by using the reflection of light. (See, for example, Patent Document 1 to Patent Document 4).

JP 2000-303589 JP 08-100087 JP 7-316476 A JP 2000-33334 A

  However, since mica is composed of plate-like crystals, most mica particle crystals are aligned in parallel to the concrete surface even when painting concrete walls and pillars using a paint containing mica. There was a tendency to end up. For this reason, when the painted surface is observed from a direction perpendicular to the concrete surface, its presence can be easily recognized by reflection of light, but the painted surface is viewed from a more horizontal angle direction with respect to the concrete surface. When observed, since the amount of light reflected by the mica is reduced, there is a problem that it is not easy to recognize the presence.

  The present invention has been made in view of the above problems, and can be easily recognized by reflected light from mica regardless of the angle at which a molded body on which a paint containing mica is applied is observed. It is an object to provide a molded body.

In order to solve the above problems, a mica-coated molded body according to the present invention is a mica-coated molded body in which a paint containing mica is coated on the surface, and the surface on which the paint is applied has a texture depth. It is formed to be 0.5 mm or more, and mica crystals enter the surface .

  In this way, the surface on which the paint is applied is formed so that the texture depth is 0.5 mm or more, so that mica crystals enter the rough surface (irregularity), and the arrangement of the mica crystals The direction is different. For this reason, when the light irradiated on the surface is reflected by the mica, the reflected light is reflected in different directions, so that the reflected light can be viewed from a wide range of angles, and visibility is improved. It becomes possible.

  Moreover, the said mica coating molded object may be formed with the groove | channel formed in the said surface, and the said coating material being painted with respect to the surface in which the said groove | channel was formed. In this case, it is preferable that the groove has a depth of 5 mm or more and a groove width of 10 mm or more and 50 mm or less.

  Thus, when the groove is formed on the surface, when light is irradiated on the surface of the mica-coated molded body, the reflected light is reflected by the surface portion that receives light and the groove portion that is shaded. It becomes visible in a striped pattern. For this reason, it becomes possible to improve visibility compared with the case where a surface is formed only with a flat surface without a groove.

In addition, it becomes possible to produce a shadow effectively by making the depth of a groove into 5 mm or more. Moreover, it is possible to generate an effective shadow by forming the groove width at intervals of 10 mm to 50 mm. When the groove width is narrower than 10 mm, the shaded portion is difficult to see, and when the groove width is wider than 50 mm, the shadow is difficult to be formed.
Adjustment is preferably performed at intervals of ˜50 mm.

  Further, the mica-painted molded body described above may be a building block molded by applying vibration and pressure using zero slump concrete.

  In this way, mica-painted compacts are molded by an immediate demolding method that applies vibration and pressure using zero slump concrete, so that the concrete is immediately removed from the mold and the mica-painted compacts are continuously produced. It becomes possible to do. In addition, by adjusting the concrete mix and compaction degree (filling rate, etc.), it is possible to easily achieve the desired concrete roughness, and the groove can be formed simultaneously with molding. Since no post-processing or the like is required, a mica-coated molded body can be produced quickly and economically.

  The mica-painted molded body according to the present invention forms the surface on which the paint is applied so that the texture depth is 0.5 mm or more. Therefore, the arrangement direction of the mica crystal can be changed. For this reason, when the light irradiated on the surface is reflected by the mica, the reflection directions of the reflected light are different from each other, and the reflected light can be viewed from a wide angle, so that the visibility is improved. Is possible.

3 is a perspective view showing a block according to Embodiment 1. FIG. It is a figure for demonstrating the measuring method 1 which concerns on Embodiment 1. FIG. It is the figure which showed the relationship between the luminance ratio measured in the measuring method 1 which concerns on Embodiment 1, and a measurement angle. It is a figure for demonstrating the measuring method 2 which concerns on Embodiment 1. FIG. It is the figure which showed the relationship between the luminance ratio measured in the measuring method 2 which concerns on Embodiment 1, and a measurement angle. It is the perspective view which showed the block which concerns on Embodiment 2. FIG. FIG. 6 is a perspective view showing a block according to a third embodiment. FIG. 6 is a perspective view showing a block according to a fourth embodiment.

  In order to solve the above problems, a block coated with a mica paint will be described with reference to the drawings as an example of a mica-coated molded body according to the present invention.

[Embodiment 1]
FIG. 1 shows a block 1 according to the first embodiment. The block 1 is used, for example, as an exterior forming product (for example, a concrete plate for sidewalks) such as an outer wall of a building or a fence, and the surface is coated with a mica paint 2. In the first embodiment, a paint containing 2% mica is applied to a solvent-based acrylic resin paint (clear).

  The block 1 has a substantially plate state, and the surface of the block 1 is formed so that the texture depth is 0.5 mm or more. Here, the texture depth indicates the roughness of the surface, and is based on the sand patching method (see “6-6 Method for Measuring Roughness of Pavement” in the Pavement Test Method Handbook (edited and published by the Japan Road Association)). Is required.

Specifically, fine sand having a known volume is placed in a mountain shape on the surface of the block 1, and a rubber plate (a rubber plate is attached to a wooden board so as to be circular is provided with a handle. ). By spreading the sand in this way, the sand can be made to enter the fine irregularities on the surface of the block 1. When spreading, it does not become an exact circle, so measure the diameter in two directions and find the area from the average value. Then, the average sand thickness can be obtained by dividing the known sand volume by the spread sand area, and the sand depth thus obtained is the texture depth. It corresponds to. The texture depth (mm) is
Texture depth (mm) = volume of sand (cm ³ ) ÷ area of spread sand (cm ² ) × 10. In Embodiment 1, the measurement was carried out using Iitoyo sand 6 and the amount of sand being 1.0 cm ³ .

  If the surface of the block 1 is formed so that the measured depth is 0.5 mm or more in this way, even if the surface is coated with mica, the rough portion of the block surface (irregularities) The mica crystals enter the portion and are painted in various directions (that is, without crystals arranged in a direction parallel to the block surface). For this reason, it is possible to prevent the reflection direction of the light hitting the mica from being limited only to the front direction of the block surface, and the block 1 can be easily reflected by the reflected light from the mica regardless of the angle at which the block 1 is observed. Can be recognized.

  In addition, grooves 3 formed at regular intervals are provided on the surface of the block 1 in the vertical and horizontal directions. The groove 3 is defined to have a depth of 10 mm and a width of 20 mm.

  The block 1 is molded using a molding die in which a convex portion corresponding to the groove 3 is formed on the inner surface, and zero slump (zero fluidity) ready-mixed concrete is used as the material of the block 1 to form the molding die. Blocks are molded by putting ready-mixed concrete and applying pressure while applying vibration (immediate demolding method). Regarding the immediate demolding manufacturing method, for example, JP 2007-283575 A (molding method of residual mold) is disclosed, and thus detailed description thereof is omitted here.

  As described above, in addition to the method of molding concrete by an immediate mold removal manufacturing method, a casting manufacturing method in which green concrete is poured into a molding die and molded is also known. Regardless of whether it is an immediate demolding method or a casting method, it is possible to arbitrarily change the roughness of the concrete surface by changing the roughness of the surface of the mold (form). However, in the immediate demolding method, the concrete can be instantly compacted by applying strong vibrations. Therefore, it is possible to demold immediately and continuously manufacture the block 1, and curing the concrete for demolding. There is no need to consider the period. Also, by adjusting the concrete mix and compaction degree (filling rate, etc.), the desired concrete roughness can be easily achieved, and post-processing to form the grooves 3 is necessary. Therefore, the block 1 can be produced quickly and economically.

  Moreover, since the groove | channel 3 is formed in the surface of the block 1, a shadow can be produced in the reflected light of mica. Specifically, the reflected light is visually recognized in a stripe shape by the surface portion of the block that reflects light and the groove 3 portion that is shaded. For this reason, it becomes possible to improve visibility compared with the case where the surface of the block 1 is formed only by the flat surface without the groove | channel 3. FIG.

  In addition, in the block 1 which concerns on Embodiment 1, although the depth of the groove | channel 3 was 10 mm, if a depth of 5 mm or more is ensured, it is possible to produce a shadow effectively. In the first embodiment, the width of the groove 3 is 20 mm. However, the width of the groove 3 is not limited to 20 mm, and an effective shadow can be obtained by securing an interval of 10 mm to 50 mm. Can be generated. In addition, when the groove width is narrower than 10 mm, it is difficult to see the shadow portion, and when the groove width is wider than 50 mm, it is difficult to make the shadow, so it is preferable to perform adjustment at intervals of 10 mm to 50 mm. .

  Next, using the three blocks that are molded as described above and having different texture depths, the luminance ratio of the reflected light to the illumination light irradiated on the block is determined as the surface of the block. The difference in visibility was measured according to the observation angle with respect to.

[Measurement method 1: Measurement of luminance change when the angle of the observation side is changed with respect to the block irradiated with light from the front direction]
In measurement method 1, as shown in FIG. 2, a beam lamp (beam angle 30 degrees BRF110V150W) 4 is set at a position 32 cm away from the block surface in front of the block 1, and from the beam lamp 4 to the block surface. The irradiation radiance was adjusted to 479 W / m ² . The position in front of the block 1 (position perpendicular to the surface of the block 1) is set to 90 degrees, and the five observation positions of the block 1 are changed (specifically, 22 degrees, 35 degrees, 41 degrees, 63 The luminance meter 5 was installed at 5 points of 73 degrees and 73 degrees, and the luminance at each observation angle was measured. Then, the luminance ratio (%) was measured by dividing the measured luminance at five locations by the luminance measured when the measurement angle was 73 degrees.

FIG. 3 is a diagram showing the correspondence between the measurement angle and the luminance ratio. In the measurement method 1, the block having a texture depth of 0.39 mm, the block having a texture depth of 0.82 mm, and the texture depth of 1 are used.
. Measurement was performed using a 27 mm block.

  As shown in FIG. 3, when the texture depth was 1.27 mm and 0.82 mm, the luminance ratio was reduced only to 50% even when the measurement angle was 22 degrees. In the case of 39 mm, it decreased to 29%. When the surface of the block 1 is roughened to some extent, the mica crystals mixed with the paint are arranged in various directions along the rough portion (uneven portion) of the block surface, and the light irradiated on the block surface is reflected in various directions. be able to. Since the difference in the brightness ratio is caused by such a difference in reflected light, it is possible to widen the observation angle at which visibility can be ensured.

  On the other hand, when the texture depth is shallow and the surface of the block 1 has a small and flat surface, the mica crystals are arranged in a fixed direction, and the fixed direction It will only reflect light. For this reason, the observation angle which can be visually recognized becomes narrow compared with a block with a deep texture depth.

[Measurement method 2: Measurement of luminance change when the installation angle of the block is changed in a state where light is irradiated from a certain direction and the person observing from the same direction is viewing]
In the measurement method 2, as shown in FIG. 4, the vehicle 6 was stopped at a position separated by 430 cm from the installation position of the block 1, and the block 1 was irradiated using the high beam of the headlight 7. In addition, it is a position 200 cm away from the block installation position, and a position that is swung by 10 degrees toward the center of the vehicle (specifically, by positioning so that the driver's seat exists on the extension, The luminance meter 5 is installed. In such a state, the installation angle (front position angle) of the block 1 is tilted by 15 degrees with respect to the light entry direction, and five tilt angles (specifically, 30 degrees, 45 degrees, 60 degrees, The luminance at 5 tilt angles of 75 degrees and 90 degrees was measured using the luminance meter 5. Then, the luminance ratio for each tilt angle was measured by dividing the luminance of the luminance meter 5 measured at each angle by the luminance measured when the tilt angle was 90 degrees. In the case of the measuring method 2, the measurement was performed using a block having a texture depth of 0.39 mm, a block having a texture depth of 0.82 mm, and a block having a texture depth of 1.27 mm.

  As shown in FIG. 5, when the texture depth was 1.27 mm and 0.82 mm, the luminance ratios were almost equal regardless of the measurement angle, and no difference occurred. On the other hand, in the block having a texture depth of 0.39 mm, the measured luminance ratio is reduced to about 60% to 70% compared to the case where the texture depth is 1.27 mm and 0.82 mm. As is apparent from the measurement results, the surface of the block 1 is made to have a certain level of roughness, so that the headlight 7 can be irradiated not only from the front but also from an oblique direction. The light of the headlight 7 can be reflected in a visible manner, and the visibility can be ensured at a wide angle.

  In the first embodiment described above, a block 1 that exhibits a substantially plate state is formed by using ready-mixed concrete with zero slump (zero fluidity), putting the ready-mixed concrete into a mold and applying pressure while applying vibration. The case where the mica paint is applied to the surface of the block 1 has been described, but in the blocks shown in the following second to fourth embodiments, the concrete composition, dimensions, shapes, and the like are shown in more detail. And using the block provided with the concrete shape | molded based on such a mixing | blending etc., the measuring method 1 mentioned above (when changing the angle of the side to observe with respect to the block irradiated with light from the front direction) The measurement result of the luminance change is measured and the measurement result is shown.

[Embodiment 2]
The block according to Embodiment 2 is building block concrete as shown in FIG. The block 10 has a width of 390 mm, a height of 190 mm, and a thickness of 120 mm, and the face shell surface 11 has a planar shape. The face shell surface 11 is coated with a solvent-based acrylic resin paint (clear) mixed with 2% mica. The block 10 according to the second embodiment is different from the block 1 in that the groove 3 like the block 1 shown in the first embodiment is not formed.

The concrete constituting the block are zero slump concrete is used, the cement 266kg / ^{m 3,} water 107 kg ^{/ m} 3, 7 No. crushed stone 596kg / ^{m 3,} is formed by blending the crushed sand 1,347kg / ^{m 3} Yes. The concrete was molded by vibration and pressurization using a K2EX molding machine manufactured by Katsura Machinery Co., Ltd., and after curing with steam, curing was performed indoors. As a result of measuring the depth of the concrete thus obtained, the average value of the three measurements was 1.05 mm.

In the block 10 thus molded, the measurement method shown in the measurement method 1 is used to measure the luminance when the measurement angle is 73 degrees and the luminance when the measurement angle is 22 degrees. The ratio of the luminance measured in the case of 22 degrees to the luminance measured in the above was obtained. In particular,
Luminance when the measurement angle is 73 degrees = 4,465 cd / m ²
Luminance when the measurement angle is 22 degrees = 2,273 cd / m ²
Luminance ratio = 2,273 ÷ 4,465 × 100 = 51%

  As described above, in the block 10 shown in the second embodiment, the texture depth is 1.05 mm and 0.5 mm or more is secured. Therefore, the texture depths 0.82 mm and 1 shown in FIG. Like a .27 mm block, a luminance ratio of 50% or more can be secured, and visibility can be improved.

[Embodiment 3]
The block according to Embodiment 3 is a concrete flat plate as shown in FIG. The block 12 has a length of 300 mm, a width of 300 mm, and a thickness of 60 mm. The surface is coated with a solvent-based acrylic resin paint (clear) mixed with 2% mica.

The concrete constituting the block, concrete slump 12cm is is used, cement 484kg / ^{m 3,} water 274kg / ^{m 3,} and is formed by compounding sand 1,452kg / ^{m 3.} Concrete was molded by a casting method in which concrete was poured into a mold, and after pouring into the mold, it was compacted with a table vibrator and steam-cured. Thereafter, the mold was removed and dried indoors. As a result of measuring the depth of the concrete obtained in this way, the average of the three measurements was 0.35 mm.

In the block 12 thus molded, the measurement method shown in the measurement method 1 is used to measure the luminance when the measurement angle is 73 degrees and the luminance when the measurement angle is 22 degrees. The ratio of the luminance measured in the case of 22 degrees to the luminance measured in the above was obtained. In particular,
Luminance when the measurement angle is 73 degrees = 5,256 cd / m ²
Luminance when the measurement angle is 22 degrees = 1,524 cd / m ²
Luminance ratio = 1,524 ÷ 5,256 × 100 = 29%

  As described above, in the block 12 shown in the third embodiment, the texture depth is 0.35 mm and is 0.5 mm or less. Therefore, the block having the texture depth of 0.39 mm shown in FIG. Similarly, only a luminance ratio of 50% or less could be secured.

[Embodiment 4]
The block according to Embodiment 4 is building block concrete as shown in FIG. The block 13 has a width of 398 mm, a height of 190 mm, and a thickness of 140 mm. The face shell surface 14 is provided with a plurality of grooves 15 having a depth of 10 mm and a width of 15 to 40 mm. The face shell surface 14 is coated with a solvent-based acrylic resin paint (clear) mixed with 2% mica. The block 13 according to the fourth embodiment is common in that a groove is formed in the same manner as the block 1 shown in the first embodiment.

The concrete constituting the block are zero slump concrete is used, the cement 266kg / ^{m 3,} water 107 kg ^{/ m} 3, 7 No. crushed stone 596kg / ^{m 3,} is formed by blending the crushed sand 1,347kg / ^{m 3} Yes. The concrete was molded by vibration and pressurization using a K2EX molding machine manufactured by Katsura Machinery Co., Ltd., and then cured in a room after steam curing. As described above, the block 13 according to the fourth embodiment is molded by using the same molding method with the same concrete composition as the block 10 shown in the second embodiment.

  An attempt was made to measure the depth of the concrete face shell surface 14 obtained as described above, but the face shell surface 14 is provided with grooves 15 and is not a flat surface. There wasn't.

In the block 13 thus molded, the measurement method shown in the measurement method 1 is used to measure the luminance when the measurement angle is 73 degrees and the luminance when the measurement angle is 22 degrees. The ratio of the luminance measured in the case of 22 degrees to the luminance measured in the above was obtained. In particular,
Luminance when the measurement angle is 73 degrees = 3,621 cd / m ²
Luminance when the measurement angle is 22 degrees = 1,758 cd / m ²
Luminance ratio = 1,758 ÷ 3,621 × 100 = 49%

  Thus, in the block shown in the fourth embodiment, since the groove 15 is provided on the face shell surface 14, the luminance ratio is lower than that in the block 10 shown in the second embodiment. It was possible to ensure a higher luminance ratio than the luminance ratio shown in the third embodiment. Further, the value of the luminance ratio is lower than that of the block 10 according to the second embodiment, but since the groove 13 is formed in the block 13 according to the fourth embodiment, the presence of the groove portion. The light and darkness of the groove is generated with respect to the reflected light of mica, and it is possible to improve the visibility.

  As mentioned above, although the mica coating molded object which concerns on this invention was demonstrated using the block 1,10,13 by which the mica coating was applied as an example, the mica coating molded object which concerns on this invention is embodiment mentioned above. It is not limited to 1,2,4. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in Embodiment 1 mentioned above, it demonstrates using the block 1 which exhibits a substantially plate state as an example of a mica coating molded object, In Embodiment 2 and 4, the block 10 which exhibits the shape of a building block, However, the shape of the mica-painted molded body is not limited to the shapes of the first, second, and fourth embodiments described above. Since the shape of the mica-painted molded body can be freely set according to the shape of the object to be mica-painted, it is preferably a block shape when used for a wall, When used, it is preferably cylindrical. Therefore, the shape can be freely determined and deformed according to the purpose of use and the purpose of use.

  In the block 1 shown in the first embodiment, the case where the grooves 3 are formed at regular intervals in the vertical and horizontal directions has been described. However, the grooves 3 are not necessarily formed in the vertical and horizontal directions. However, as shown in the fourth embodiment, it may be formed only in the vertical direction or may be formed only in the horizontal direction. Furthermore, the groove formation intervals are not limited to those formed at a constant interval, and may be formed so that the intervals are different.

  Further, in the block 1 shown in the first embodiment described above, the case where the groove 3 is formed has been described. However, as shown in the second embodiment, the groove is not formed at all. Also good. Even in a block in which no groove is formed, as long as the texture depth is secured to 0.5 mm or more, it can be arranged so that the arrangement direction of mica faces in a different direction. As shown in the above, it is possible to ensure visibility at a wide angle.

1, 10, 13 blocks (mica painted molded body)
2 Mica paint (paint containing mica)
3, 15 Groove 4 Beam lamp 5 Luminance meter 6 Car 7 Headlight 11, 14
Face shell surface 12 blocks

Claims (4)

A mica-painted molded body with a mica-containing paint painted on its surface,
A mica-coated molded article , wherein a surface to which the paint is applied is formed to have a texture depth of 0.5 mm or more, and mica crystals enter the surface .   The mica-coated molded product according to claim 1, wherein a groove is formed on the surface, and the paint is applied to the surface on which the groove is formed.   The mica-coated molded body according to claim 2, wherein the groove has a depth of 5 mm or more and a groove width of 10 mm or more and 50 mm or less. The mica coated moldings, mica according to any one of claims 1 to 3, characterized in that a building block which is molded by applying vibration and pressure with zero slump concrete Painted molded body.

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