KR20020072942A - Composition of polymer concrete and paint for the prevention of a rising heat, and applied products there of - Google Patents

Abstract

PURPOSE: Concrete and paint compositions with infrared shield are provided to prevent urban heat island. Also, the compositions improve strength, and save construction time and cost due to affinity for cement. The infrared shielding color concrete and paint are applied to pavement and wall and ceiling of building, respectively. CONSTITUTION: The infrared shielding color polymer concrete composition, being constructed at 25deg.C in a short time, comprises the components of: 100pts.wt. of cement; 50-300pts.wt. of gavel; 10-500pts.wt. of indium tin oxide(ITO) polymer obtained by mixing 100pts.wt. of indium tin oxide powder of less than 0.2micrometer in size with 30-4000pts.wt. of polymer; 3-1000pts.wt. of organic pigments such as azo pigment for yellow and toluidine red for red or inorganic pigment such as TiO2 for white and Cr2O3 for green. The infrared shielding paint composition is prepared by mixing coating materials, paints based on acryl emulsion, acryl and polyurethane, ITO polymer and pigment.

Description

Composition of polymer concrete and paint for the prevention of a rising heat, and applied products there of}

The present invention relates to concrete and paint for preventing heat island phenomenon, and in particular, an infrared ray blocking color that can minimize urban heat island phenomenon caused by solar heat, air pollutants, and wind blockage by many buildings in the city through infrared blocking materials and colors. It relates to a polymer concrete and coating composition and an application using the same.

Generally, a mixture of limestone raw material containing calcium oxide, clay raw material containing silica, silicate raw material containing aluminum oxide, and the like is fired, manufactured by clinker, and then crushed to produce infrared blocking color polymer in cement. When mixed to form a concrete structure, or manufactured into a block or paint, heat island phenomenon is prevented.

Most of the urban environment is made of concrete or asphalt, and artificial humidity and air pollutants emitted from automobiles, air-conditioning, heating, etc. lower the humidity in the city and increase the temperature. In other words, there is a survey result that the center of the big city is observed 2 ~ 3 ℃ higher than the rest of the big city. According to this, the temperature difference is greater in the night than in the day and in the winter than in the summer. This is due to artificial heat caused by heating, which is up to 7 ℃ higher than that of rural areas. According to the Ministry of Environment data, the concentration of carbon monoxide in urban areas was 1.4 ppm in September last year, much higher than the average of 0.8 ppm in other urban areas. Fine dust contamination is also relatively high. Therefore, the higher the temperature in the central area of the city. In addition, compared to the rural atmosphere, the city's atmosphere has a lot of buildings, so the wind speed is low, and the heated air lasts a long time, and the amount of artificial heat and radiant heat reflected from roads and apartments is high, and due to the infrared rays re-emitted from heated roads or artifacts Urban temperatures are higher than rural temperatures. In other words, heat island phenomenon appears.

The major causes of urban heat islands are concrete and asphalt, and air pollutants. Air pollutants prevent solar heat from reflecting off the earth's surface and artificial buildings have ten times more heat than green space, making heat islands even larger.

Heat island phenomena are most affected by sunlight; Sunlight is largely divided into γ-rays, X-rays, ultraviolet rays, visible rays, infrared rays, and radio waves, depending on the wavelength. γ-rays and X-rays are absorbed by nitrogen and oxygen in the earth's atmosphere, ultraviolet rays are absorbed by ozone and oxygen in the ozone layer, and infrared rays are absorbed by carbon dioxide and water vapor. Radio waves are absorbed by the ionosphere, but most of the visible light passes through the atmosphere and reaches the earth's surface. Among them, the wavelengths are smaller in the order of infrared rays, visible rays, and ultraviolet rays, and visible rays are visible rays, and ultraviolet rays and infrared rays are not visible to the naked eye. Most of the visible rays outside the red are infrared rays, and most of the radiant heat emitted by sunlight or objects is composed of these infrared rays, and infrared rays are called heat rays. The wavelength range of the infrared rays varies depending on how the wavelength is determined. Generally, the wavelength is 0.76 to 0.8 µm at the lower end of the long wavelength of visible light, the upper end is about 1 mm, and the infrared rays are absorbed in almost all solids. However, infrared rays are called heat rays, but ultraviolet rays are called chemical rays because of their strong chemical action. Ultraviolet rays are absorbed or scattered by oxygen, ozone, water vapor, dust, etc. in the atmosphere, so only a very small part reaches the ground surface. The impact is minimal. And the sun's heat transfer from the sun's light to the earth is due to the sun's electromagnetic waves, or radiation. Despite the fact that solar heat cannot be transmitted in a vacuum outside the atmosphere, solar heat reaches the earth because the solar heat is electromagnetic waves, so it can be transmitted without a medium. This electromagnetic wave is absorbed by the object and converted into thermal energy to become radiant heat. As such, the electromagnetic wave of short wavelength passes through and is absorbed mostly on the surface of the surface, and is re-emitted to the surface. Therefore, the heat island phenomenon is a serious problem caused by infrared rays. There is no situation.

An object of the present invention is to solve the problems as described above, and to block the infrared rays and change the color of heat island phenomenon and other problems, which is a serious problem that occurs in the city as a corresponding material that can improve the infrared blocking material and It is to provide a concrete and paint composition and its application to prevent heat island phenomenon through color change.

Accordingly, the present invention provides a polymer concrete and a coating composition which can realize high strength concrete having excellent affinity with cement and prevent heat island phenomenon.

The purpose of the present invention is to prepare the infrared ray blocking polymer to be mixed with cement and gravel to remove the cause of environmental pollution, which is a heat island phenomenon of the city due to indiscriminate urbanization, so that the affinity with cement is excellent and integrated with cement. By being combined, the compressive and shear strengths are excellent and can be manufactured at low cost.

In addition, by applying a color polymer to concrete and paint, which is another object of the present invention, an object of the present invention is achieved through color as well as an infrared ray blocking agent.

In order to achieve the above object, the present invention first prepares a polymer composition in which an infrared ray blocking agent is mixed with a polymer, and adds a pigment to implement color. The infrared ray blocking color polymer composition prepared as described above was mixed with the concrete composition to prepare a concrete composition having an infrared ray blocking color, and thus, a sidewalk block was prepared using the same, and a paint having an infrared ray blocking color was applied to the paint.

Configuration and embodiments of the preferred invention for achieving the above object are as follows.

<Example 1>

Infrared cut color polymer concrete is made of concrete by adding various mixed materials according to the aggregate and use to cement manufactured by mixing and baking limestone and clay. In this case, an infrared ray blocking agent and a pigment were added to an acrylic resin or an epoxy resin as a polymer material to be mixed to prepare an infrared ray blocking color polymer;

At this time, the infrared ray blocking polymer (hereinafter referred to as ITO polymer) was prepared by mixing 30 to 4000 parts by weight of the polymer with 100 parts by weight of Indium Tin Oxide (hereinafter referred to as ITO) powder having a particle diameter of 0.2 μm or less. Acrylic polymer, epoxy resin, etc. were used for the polymer. ITO is transparent in the visible region and can almost block infrared radiation from a relatively low wavelength region. ITO polymer has the advantage of being able to implement various colors of the object because of its transparency in the visible light range. In addition, it exhibits excellent thermal insulation properties by minimizing heat accumulation and release at the construction site due to its excellent radiation reflection function. Therefore, the prepared ITO polymer has an effect of saving more than 40% of heating cost in winter due to infrared ray blocking effect of 90% or more, that is, 90% or more of radiant heat reflectance performance in the wavelength range of 1 μm or less.

In addition, various color implementations were prepared by adding 3 to 1000 parts by weight of organic or inorganic pigments to 100 parts by weight of ITO polymer. As an inorganic pigment, titanium dioxide (TiO ₂ ) was used to emit white light and to absorb ultraviolet rays. When zinc oxide (ZnO) is used, it has white and ultraviolet absorption, antibacterial and deodorizing functions. When red iron oxide (Fe ₂ O ₃ ) is used, red is red, and iron sulfate (Fe ₂ O ₃ ) is yellow and oxidized. Chromium (Cr ₂ O ₃ ) was used for the production of green, Prussian Blue was used as a blue, organic pigment, Phthalocyanine Blue was used to produce blue, Azo Pigment was used as yellow, and Toluidine Red was used to produce red. In particular, chromium oxide was used as an inorganic pigment to give a green color for environmental greening pursued by the present invention.

50 to 300 parts by weight of gravel and 10 to 500 parts by weight of ITO polymer are mixed to 100 parts of cement by weight ratio of the infrared ray blocking color concrete. Preferably, 200 parts by weight of gravel and 200 parts by weight of ITO polymer are uniformly mixed. In addition, the concrete produced by using the mixture in a short time at a temperature of 25 ℃ has about twice as strong as conventional concrete. The mixing ratio of concrete constructed using sand was uniformly mixed with 30 to 60% of ITO polymer, 30 to 60% of gravel, 10 to 25% of sand, and 10 to 20% of cement.

As such, infrared ray blocking color polymer concrete is manufactured using ITO polymer and pigment as aggregate, sand, gravel, filler and binder, and the aggregate used is dried with less than 0.4% moisture and the size of gravel is less than 17mm. . It was heated to 25 ° C. to finish the construction in a short time. Polymer concrete made in this way has excellent strength characteristics, good water resistance, and is resistant to various acids, alkalis, salts, and the like. Abrasion resistance is also significantly superior to concrete or wood, so it can be used as flooring and paving materials. Polymer concrete with such a function can be used not only as a sidewalk block but also as a building material such as high-performance water and sewage pipes and artificial objects. For the convenience of construction, in the case of the sidewalk block, it is more advantageous in the case of manufacturing and using the block in advance before construction.

<Example 2>

Infrared ray shielding paint;

It was prepared using pigments that implement infrared barrier materials and colors in various architectural interior and exterior materials and textile coating materials such as acrylic emulsions and water-soluble emulsions, acrylics, polyurethane-based paints.

When ITO is used for coating, it is considered to be economical due to the process simplification by directly mixing and preparing the polymer resin for coating in the same weight ratio as the ITO polymer. Therefore, there is no manufacturing difficulty in providing infrared blocking function to the paint and it is possible to use existing equipment and processing process as it is, so it is very competitive in mass production.

For example, in the manufacture of ITO paints and fiber processing, 17 to 35% by weight of polyurethane and 5 to 18% by weight of acrylic are mixed and dissolved in 7 to 16% by weight of solvent toluene and 2 to 8% by weight of acetone. -60 weight% of mixing and stirring, 0.05-0.5 weight% of hardening | curing agents, 2-8 weight% of hard coals, 5-16 weight% of paraffin chlorides, 0.1-4 weight% of matting agents, and 0.1-0.9 weight% of silicone were mixed and stirred. The ITO coating composition prepared in the above process was coated on the fiber in a Knife coating machine, the coated fiber was first dried at a temperature of 40 ~ 150 ℃ and then dried again to prepare an infrared ray shielding fiber. Various colors can be realized by mixing pigments with infrared ray-blocking paints. In the case of titanium dioxide, which is added as a pigment, the ultraviolet ray absorbing effect is excellent, and thus, the fiber manufactured in the present invention has a complex function of simultaneously blocking infrared ray and ultraviolet ray absorption. .

Concrete and paint compositions according to the present invention will be clearly understood by their features and advantages by the working examples described in detail below.

<Action example 1>

The temperature changed by absorbing solar heat under the same conditions is shown in [Table 1]. The fastest temperature rise was followed by black, blue, red, and white. This means that the absorption of black is the largest and the absorption of white is the lowest. That is black is uihago as absorbing all light at all wavelengths, and blue is reflected only energy of 73.6W / m ² of 0.46~0.49μm, red color reflects only the energy of 212.8W / m ² of 0.62~0.77μm, white Is the lowest because it reflects all light. The wavelength range change, that is, the solar energy according to the color is shown in [Table 2].

It has been found that the force of an object to absorb or release radiant heat is closely related to the color of its surface. Solar heat depends on the color; The darker the color, the more it absorbs solar heat, and the lighter the color, the less it absorbs. And the heat energy absorbed by the object from the solar heat is emitted in the infrared, the darker the color, the greater the power to emit or absorb radiant heat. As a result, the black heats up quickly and cools slowly. This heat island phenomenon caused by radiant heat is seriously harmful, such as blocking the atmospheric circulation, increasing pollution, and causing smog and viewing disorders. Radiant heat increases the temperature.

Especially in the case of large cities, the rise of the temperature during the day due to heat island phenomena and the rainy season does not fall, prompting early tropical nights. The temperature rises due to the artificial heat generated in the city, and a lot of water vapor covering the ground forms a kind of barrier to prevent the temperature drop. On the other hand, the average annual occurrence of tropical nights is about 3-7 days nationwide, but it has increased noticeably since the 1990s.

Therefore, in the case of a building made of the present invention, since the surrounding air is colder than the area where other buildings enter by blocking infrared rays, the air is greatly helped in circulation.

<Action example 2>

Environmental greening pursued by the present invention has many advantages in the case of cities.

There are two types of colors, 'adjacent color' which looks close and 'fade' which looks far away. The advancing color includes bright transparent colors such as warm colors such as red and orange, and yellow, and the subchromic colors include warm colors such as blue, cyan and violet, dark colors, and darkish colors. The object's position is recognized differently depending on the color by the refractive index of the color and the eye focus function. Therefore, a car painted with a receding color is smaller than it actually is and is mistaken as if it is far away. Traffic accident rates according to different paint colors of the cars are shown in [Table 3].

It can be seen that an accident rate is higher than a vehicle painted with a backward color compared to a vehicle painted with an advancing color.

However, if the urban environment is packaged or painted with green of green system, it may play a role of reducing car accidents. Green makes the lens of the eye thin and focuses on the retina, so the green object of the regression system retreats and is perceived to be smaller, and the advancing color is smaller on the back than the retina because the refractive index is small. Inflate the lens to win a prize. To focus this, the lens is inflated and made into a block lens state, which is closer than the actual distance of the advancing color system object and appears to be inflated. Therefore, the surrounding environment is green, which is a backward color system. It also serves to lower the traffic accident rate by making it possible to more clearly see the advancing color vehicles.

<Action example 3>

When eyes are tired, look green. Green is a color that represents health and rest. In the study of color therapy and light therapy, there is a function to solve the pain and tension of various organs of the body. For example, Burunal, author of the US Radiation Energy Research, reports that green affects the entire human organ system and boosts vitality, activating the kidneys and liver and neutralizing soiled substances such as water, food, and air. India's Adiali insisted that green is the name. Green acts as a refreshing agent, releasing clumps of blood, creating muscle, tissue, and skin, and eliminating pathogens and viruses. It's also effective against crumbs and tears and stabilizes blood pressure. In addition, American medical doctor Barbitt reported using green to cure ulcers. In this way, green is not only eye fatigue, but also effective in treating and activating various parts of the body because humans perceive color not only by the eyes but also by the skin. Therefore, if the surrounding environment is created by the green system, it gives psychological stability. This can be seen from the fact that the haptic time felt by humans is affected by color. The haptic period felt by workers working in an environment consisting of a green color system is shorter than the environment composed of a red color of a warm color system. For example, in a conference experiment in a space painted with a warm color system, the recognition of the time elapsed about twice as long as the actual elapsed time. On the contrary, the room such as the green color system has a psychological effect to make the time elapse shorter. One minute or less Based on these experiments, when the surrounding environment is painted in one color system, it can be expected to give mental comfort to humans such as motorists and pedestrians.

<Action example 4>

The concrete is mainly used for sidewalks, roads, etc., and paint is used for painting walls or roofs of apartments or general houses.

The specific effect can be expected as follows.

(1) Prevention of temperature rise by infrared ray blocking

(2) reduction of eye fatigue by reflection

(3) psychological stability through eye-friendly colors

(4) increased durability

Although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be embodied in various modifications by those skilled in the art.

Such modified embodiments are to be understood individually from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

As described above, the concrete and the coating composition according to the present invention have excellent affinity with cement because the infrared ray blocking polymer is mixed with cement and gravel, thereby increasing the strength and reducing the cost by shortening the construction time. It also brings psychological stability through prevention of heat island phenomenon by infrared ray blocking and greening of surrounding environment.

Claims (2)

A polymer composition prepared by mixing an infrared ray-blocking agent with a polymer is prepared first, and then an infrared ray-blocking color polymer composition containing a pigment that implements color is mixed with the concrete composition to prepare a concrete composition having an infrared ray-blocking color. In the preparation, various kinds of mixed materials are added to the aggregate and the use in cement, wherein the infrared ray blocking agent and the pigment are added to the acrylic resin or the epoxy resin as the polymer material to be mixed to prepare the infrared ray blocking color polymer; (1) Infrared ray blocking polymer (ITO polymer) in the infrared ray blocking color polymer is prepared by mixing 30 to 4000 parts by weight of polymer to 100 parts by weight of Indium Tin Oxide (ITO) powder having a particle diameter of 0.2 μm or less. (2) and inorganic pigments used in infrared ray blocking color polymers prepared by adding 3 to 1000 parts by weight of organic or inorganic pigments to 100 parts by weight of ITO polymer for color, using white titanium dioxide (TiO ₂ ). It has a function of absorbing ultraviolet rays, and zinc oxide (ZnO) is used to have white and ultraviolet absorption, antibacterial, and deodorizing functions. When red iron oxide (Fe ₂ O ₃ ) is used, red color is used. Fe ₂ O ₃ ) is yellow, chromium oxide (Cr ₂ O ₃ ) is green, Prussian Blue is blue, and it is organic pigment.Pthathayanyan Blue is blue, Azo Pigment is yellow, Toluidine Red is red. Infrared blocking color polymer composition prepared for use in manufacturing, in particular infrared blocking green polymer composition using chromium oxide as green pigment for greening. Using the infrared blocking color polymer crude and ITO prepared by claim 1; (1) 50 to 300 parts by weight of gravel and 10 to 500 parts by weight of ITO polymer are mixed in 100 parts by weight of cement, preferably 200 parts by weight of gravel and 200 parts by weight of ITO polymer to 100 parts by weight of cement. A mixed infrared ray shielding color polymer concrete composition which can be applied within a short time at 25 ° C., (2) The mixing ratio of concrete to be constructed using sand is 30-60% ITO polymer, 30-60% gravel, 10-25% sand, 10-20% cement, (3) And the polymer concrete manufactured as such is used as a building material such as high-quality water and sewage pipes, artificial objects as well as sidewalk blocks. In particular, the method for producing the prepared infrared blocking color polymer concrete composition in the form of a block, a panel, etc. in order to give convenience in construction. (4) acrylic emulsions and water-soluble emulsions, acrylics. Infrared ray-blocking color paints are manufactured by using pigments that implement color and infrared ray shielding material (ITO) in paints used in various interior and exterior building materials and textile coatings such as polyurethane paints. Infrared shielding color coating composition and coating method manufactured by directly mixing ITO by weight ratio and using economical efficiency and manufacturing equipment and processing process according to the simplified process.