JP2014073458A - Method for forming surface coating for granular material coated on surface with light-accumulating pigment and silicon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problems that: coating on the whole surface of individual articles cannot be formed because adjacent articles adhere together when a liquefied coating is coated on the surface of small glass beads, sand and the like; and the coating only on a space surface and the coating of an uncoated part while inverting after the small glass beads and sand are placed independently are impossible in actual working for the small glass beads, the sand and the like.SOLUTION: The operations of emitting materials upward against gravity are continuously performed. When the materials emitted earlier lose energy and fall down by gravity, the materials collide with and contact with successively emitted materials. Thereby, difference in mixing conditions due to the difference of specific gravity between substances having specific gravity differences is eliminated, the materials are uniformly mixed and then uniform coatings are formed.

Description

The present invention relates to a surface film forming method for forming a uniform surface film on a phosphorescent pigment by bringing materials into contact with each other under uniform conditions while eliminating the influence of specific gravity difference using gravity.

A method of creating a chemical-resistant film on the surface together with a phosphorescent pigment to add chemical resistance and phosphorescence to the surface of spherical or irregular shaped particles such as glass beads, glass balls, sand or metal particles

JP 2009-126769 A JP 2009-287187 A JP-A-5-306157 Japanese Patent Laid-Open No. 5-287268 Japanese Patent Laid-Open No. 10-231159 JP 2000-212904 A JP 2002-020153 A JP 2000-212904 A Japanese Patent Laid-Open No. 10-231159 JP 2001-202044 A JP 2007-224680 A JP-A-5-306157 Japanese Patent Laid-Open No. 2007-224680

In a method of forming a phosphorescent and chemical-resistant film on the surface of an object, an object with a large shape is placed on a workbench, and after the film is cured by applying a film to a surface that does not contact the workbench, The coating can be applied to the entire surface if the coating is applied with the surface that is reversed and in contact with the workbench facing up. However, although shaped objects such as sand and glass balls having a small shape are theoretically possible, the film cannot be formed several times by reversing in this way in terms of efficiency. It is about the method of solving about such a subject.

When a liquid film is applied to the surface of an object having a small shape, the adjacent object or a portion in contact with the work table adheres, and the film as an individual object cannot be formed. It can be said that it is impossible to actually apply an object having a small shape while inverting it in actual work.
When creating a film with resin-based adhesive or glass glaze applied to the entire surface, the material forming the film is cured and remains in the air until it retains its individual shape even when it comes into contact with an adjacent object. The film as an individual cannot be completed unless it is held in contact with adjacent objects. Although 13 Japanese Unexamined Patent Publications have been described as prior art documents, there is no description of a technique based on the same idea as the present invention.

The present invention has been made to solve the above-mentioned problems. When the material is released continuously against gravity, the material released earlier loses energy and falls by gravity. Then, by making collision contact with the released material, it is possible to eliminate unevenness of mixing conditions due to the difference in specific gravity between objects having specific gravity differences, and to make uniform coatings by mixing and contacting evenly. Solved by.

Using a silicon film containing a phosphorescent pigment formed by the method of the present invention, it was applied to the surface of a phosphorescent mortar block indicating a parking position and installed in an outdoor parking lot. The brightness of the phosphorescent mortar block immediately after sunset in fine weather was 7624 mcd / m 2, but the value measured after exposure to wind and rain outdoors for 2 years and 7 months was 6978 mcd / m 2. The difference in luminous intensity was considered to be the difference in input light energy due to the intensity of sunlight, and no effect on the decay of the luminous effect on the luminous pigment by cement was observed.

FIG. 1 is a cross-sectional view of a glass ball in which a phosphorescent pigment is incorporated on the surface to form a silicon film.

Embodiments of the present invention are described in detail below.
The method of applying a phosphorescent pigment and a chemical-resistant coating on the sand surface at the same time is described.
For example, a case will be described in which a silicon resin and a phosphorescent pigment are simultaneously and evenly applied to the entire surface of sand as chemical resistant materials. General sand has a specific gravity of 2.3 to 2.6, and a silicon resin used as a covering material is 2.33. Since there is no specific gravity difference, it is convenient for coating. A phosphorescent pigment is added to this silicon to coat the surface of the sand.
When materials with specific gravity differences are mixed, the heavy ones sink down, the light ones overlap and do not mix evenly. In the initial mixing stage according to the present invention, the sand and silicon resin having no difference in specific gravity are mixed first. To do. Sand and silicon resin with a small difference in specific gravity cover the surface evenly. When the phosphorescent pigment is mixed in the next stage, the silicon resin that is uniformly dispersed and adhered to the surface of the sand adheres the phosphorescent pigment and uniformly takes it into the surface. When the concentration of the silicon resin is high, the coating film is thick, and when the concentration is low, the coating film is thin. In order to achieve uniform quality, the coating material concentration must be uniform. However, mixing under the condition of gravity that mixes with a general shearing force is inevitable in a situation where the specific gravity is applied. To solve this situation, it is only necessary to mix in the space where gravity does not act. According to the method, when an object is released into the air, it starts to fall at the peak when acceleration becomes zero. The moment when the acceleration becomes zero and the fall starts, the weight becomes zero and there is no gravity, even if objects with different specific gravity are mixed, even if a heavy object sinks downward and a light object floats upward, it is evenly affected without being affected by gravity Mix. After that, it falls with gradually increasing drop acceleration. If this condition occurs continuously, when the first released object falls, it encounters and comes into contact with the next emission. At this point in time, the gravity effect of each object appears very close to zero. In such a case, the conditions for mixing and contacting are equal, and a heavy material and a light material are layered, and light and shade due to specific gravity in which the mutual contact between the materials is not uniform does not occur. Until the acceleration of the material changes from minus G to plus G, the difference in the film thickness due to the influence of the specific gravity difference does not occur in the state of no weight force, and the covering can be molded in an even situation. There is an omni mixer as a machine that can produce such a mixed state.

When mixing or applying objects with different specific gravities, objects with heavy specific gravity sink below and light objects float above, and the omni-mixer mixes and applies substances in outer space. Thus, it can mix and apply | coat, losing a specific gravity difference. The OM mixer is manufactured by Chiyoda Machinery Co., Ltd. in Japan.
The structure of the omni mixer is surrounded by a movable rubber, and the bottom surface is made of steel and moves separately from the bottom plate via a bearing at the bottom center of the bottom plate attached to the central axis at an inclination angle of 14 degrees. There is a rotating shaft, and the bottom plate of the mixer moves up and down by rotating the rotating shaft. As a result, the object housed in the mixer is pushed upward with an acceleration of minus 7 G, as the bottom plate inclined with the rotation of the shaft moves up and down due to the difference in position of the inclination angle. When the acceleration of the pushed object becomes zero, it starts to descend, but it encounters and touches the continuously pushed object, and the materials with specific gravity difference are mixed under the influence of the gravitation of the same situation close to zero gravity, A homogeneous situation appears. By this action, small-diameter objects such as glass beads, glass balls, or sand can float in the air and form a uniform film while adhering a coating material on the surface.

Necessary requirements for the coating material are transparency that does not block the light of the phosphorescent pigment, chemical reaction with the phosphorescent pigment, and alkali resistance and acid resistance. Among many raw materials, silicon has a characteristic that it does not react with other raw materials, and glass balls, sand, and the like form a coating in an independent form, thus satisfying the requirements required for the present invention. Also, the curing reaction can be cured in a short time using a curing agent. A silicon that meets this purpose is a silane coupling agent. Silicon used as the coating material includes oily silicone oil and emulsion, and as these applied products, there are room-temperature curable silane coupling agents generally used for coating. Since this material can be diluted with water, the film can be thinned. Silicon has a low viscosity and can make the film thin, but when the film is thin, it is nearly transparent and can transmit light. It does not decompose even in an atmosphere at 250 ° C., and neither discoloration nor deterioration occurs. There is little deterioration by ultraviolet rays, and it has excellent weather resistance. After curing, it is water repellent and modified to an inorganic material close to glass, so it is the best coating material to achieve the purpose.

The brightness of the coating film was measured when the phosphorescent glass ball having the phosphorescent pigment according to the present invention coated with silicon on the surface thereof at a pigment content of 30%. (See Tables 1 and 2)

Examples will be described. As a first-stage operation, a silicon resin film is formed on a glass ball having a small particle diameter as a core using room temperature curable silicon coating agent X-40-2327 or KBM-3063 manufactured by Shin-Etsu Chemical Co., Ltd. After starting the mixer on the hom, put a predetermined amount of glass balls into the hom. Next, the silicon emulsion prepared in advance is sprayed toward the scattered glass balls by spraying a weight ratio of 1% to 5% of the weight of the glass balls while driving the omni mixer. The amount of silicon emulsion sprayed is determined by the required thickness of the silicon coating. By such an operation, the silicon resin emulsion is evenly distributed on the glass balls without being affected by gravity on the surface of the glass balls, thereby forming an uncured film. Next, as a second stage operation, the phosphorescent pigment is put into the rotating om in the mixer.
Since the silicone resin coating formed on the surface of the glass balls is uncured, it absorbs the phosphorescent pigment and is mixed in a weightless state, so it intersects under equal conditions without being affected by the difference in specific gravity. Adhesive amount. Next, as a third stage operation, heating is performed at a temperature suitable for curing the silicon emulsion to be used in the range of 100 to 200 ° C. When such a series of operations is completed, a silicon resin film in which the phosphorescent pigment is uniformly dispersed on the surface of the glass ball can be formed. One working time is about 5 minutes. The silicon emulsion to be sprayed is produced by mixing silicon 50 with 50% anhydrous alcohol by weight. Thereafter, it is allowed to cool gradually for 24 hours or more and naturally dried, or when it is placed in a dryer and dried at 200 ° C. for 30 minutes to obtain an absolute dry state, a glassy strong film is formed on the surface. The surface hardness is initially about 5H pencil hardness, but after 2 weeks it becomes a strong glassy film of about 7H. Instead of the silicon emulsion, a silicon oligomer to which a small amount of a curing agent is added can be appropriately used.

Luminous glass balls are used as road centerlines. Since the road surface is covered with a water vein during rainfall at night, the light from the headlight of the car that should not be reflected does not reach the glass ball on the center line. It is dangerous because the overtaking regulation line cannot be confirmed. The product of the present invention works effectively to solve this problem. Glass balls with phosphorescent coating on the surface absorb the light from the headlights of the car and emit light immediately even underwater, so the driver of the car can clearly see the center line and overtaking regulation line Therefore, it contributes greatly to road safety.

When sand having a phosphorescent pigment coated on its surface is used as mortar sand, it can form phosphorescent mortar. This mortar can be used for walls and floors, but it does not consume any artificial energy. It also works as an emergency light and works effectively when power lighting is interrupted during a disaster.

Sand coated with a phosphorescent pigment on the surface can also be used as a material for sand art. Furthermore, it is used as a processing material for outdoor signboards and display boards.

DESCRIPTION OF SYMBOLS 1 Phosphorescent pigment 2 Silicone film 3 Core object R Granular substance S surface coated with silicon containing phosphorescent pigment Surface coating

Claims (2)

  A method for producing a granular material comprising a core object, a silicon coating, and a phosphorescent pigment, wherein the core object is continuously released upward against gravity and then silicon resin is added. After these are evenly dispersed, the phosphorescent pigment is added. As a result of this series of operations, when the material previously released upward loses energy and falls due to gravity, it subsequently collides with the released material, thereby causing a difference in specific gravity between substances having a specific gravity difference. A method for forming a surface film, characterized in that a uniform film is formed by mixing uniformly and eliminating a difference in mixing conditions.   2. The surface film forming method according to claim 1, wherein the act of continuously releasing a substance as a core into the air is performed, and a uniform resin film is formed on the surface by spraying silicon resin in a weightless state. Glass balls, sand, etc. characterized by sprinkling the body and adsorbing it to an uncured silicon resin film, and then curing it by heating to an appropriate temperature in the range of 100 ° C. to 200 ° C. A method for forming a surface film on an object having a small particle size.

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