KR100989664B1 - A water tank polyurea coating panel its manufacture method thereof - Google Patents

Abstract

PURPOSE: A method for manufacturing a polyurea-coated panel for a water tank is provided to achieve a water tank panel with high durability and sanitary property through semipermanent coating. CONSTITUTION: A method for manufacturing a polyurea-coated panel for a water tank comprises steps of: cutting, embossing and bending a metal sheet into a panel(S100), removing foreign materials from the panel surface through shot blasting or sand blasting(S101), heating the panel using a blower heater in order to maintain the optimum temperature for polyurea coating(S102), colliding, mixing, and spraying a coating solution to form a coating layer on the panel surface(S103), and drying the coated panel naturally(S104).

Description

A water tank polyurea coating panel its manufacture method

The present invention relates to a method for manufacturing a polyurea coated panel for a water tank, and more particularly, the polyurea coated panel is a low-carbon eco-friendly product and has excellent chemical and physical properties in terms of quality, thereby providing the best clean and hygienic water tank. In particular, it requires less energy in the manufacturing of the panel and the operation is easy, which is economically advantageous, and thus, the quality and reliability of the product can be greatly improved, thereby allowing the consumer to plant a good image.

As you know, a water tank is a container that stores a large amount of water. It is an indispensable product in daily life, such as apartments, buildings, hotels, hospitals, and government offices.

If you look at the panel of the water tank currently being used, such as FRP, SMC is used, but these are disadvantages of strength is weak due to the age-aging phenomena that the strength drops over time.

In addition, the conventional panel material has a problem that the waste treatment costs are also generated because it contains a glass fiber and is designated as a specific waste when the water tank replacement disposal.

In order to solve the above problems, conventionally, a water tank made of a stainless panel material is used, which also causes many problems such as rust generation at the welding site and corrosion by chlorine gas in tap water.

Therefore, in order to improve the above problems of the stainless water tank panel, it is possible to manufacture a sanitary water tank panel without the occurrence of rust by coating the metal tank panel with a coating agent such as polyethylene or the like.

However, in order to coat synthetic resins such as polyethylene on metal substrates, PE and synthetic resins are heated and injected at a high temperature of 100 ° C. or higher to coat metallic substrates, and in the case of powder fusion coating of polyethylene, the metal base materials are heated to a high temperature of 200 ° C. A powder fusion coating method for fusion of powder of polyethylene is used.

This makes it possible to produce water tanks of good quality by manufacturing water tank panels with excellent durability and very good hygiene.

However, this method has the disadvantage of using a lot of energy.

Conventional techniques for water tank panels include Patent Registration No. 0830891 (Application No. 2007-0053988) (named: Panels coated with linear low density polyethylene for water tanks and methods of manufacturing the same). That is, the above conventional technique undergoes a series of molding processes for cutting, embossing, bending and welding the metal steel sheet 7 to the size of the water tank panel 9, as shown in Fig. 1 (a) (b). (S1) Then, after the molding process, the foreign matter buried on the surface of the metal steel plate is subjected to a pre-treatment process to cleanly remove it by sandblast. (S2) After the pre-treatment process, the metal steel plate is subjected to 5 to 200 to 250 ° C. (S3) After the heating process, linear low-density polyethylene powder (LLDPE: Linear Low Density Polyethylene) (4a) is fused to the surface of the metal sheet 7 by high pressure air pressure to form a coating layer. (S4) After the coating process, a linear low density polyethylene-coated metal steel sheet is put in cooling water (0 to 10 ° C) for 5 to 10 minutes to cool. (S5) The cooling process is also performed. Linear low density poly for water tank after drying process for 1 to 2 hours Is an ethylene manufacturing panels (9). (S6) In addition, the conventional technique can manufacture linear low density polyethylene panels 9 for water tanks by coating the coating layer 8 with air pressure of high pressure together with the elvan rock (4b) or kaolin (4c) powder during the coating process. At this time, the bedrock (4b) is known as a stone with a water purification (淨水) action, and emits far infrared rays to be used in jjimjilbang, tableware, medical equipment, etc. And the kaolin (4c) to prevent the mold and mite formatting, It has a strong deodorizing effect.The linear low density polyethylene panel (9) for water tanks provides the antibacterial and deodorizing effect by far-infrared radiation as well as the ability to adsorb, decompose and purify pollutants and heavy metals in water. Will be done. In addition, the conventional technique combines linear low-density polyethylene, alumina and kaolin in a ratio of 8: 1: 1 in the coating process to produce a linear low-density polyethylene panel for a water tank. In addition, the above-mentioned conventional technique can produce the linear low density polyethylene panel 9 for the water tank by spraying the coating process by air pressure, as well as the injection mold as follows. After intermixing melted polyethylene, rock and kaolin powder together with metal sheet, it can be injection molded to produce linear low density polyethylene panel for water tank. As described above, the linear low density polyethylene panel for water tank can be manufactured by injection mold. The manufacturing process is simple and the productivity can be increased. Since such a conventional technical process is necessarily accompanied by a heating process, as described above, a large problem arises that the operation is not easy and economical at the same time as it consumes a lot of energy.

The present invention has been made in order to solve the above problems of the prior art, the panel manufacturing process, the sand blast (process), and the heat treatment process and the process of collision mixing spraying and natural drying process is provided The first object, and the second object of the present invention by the above technical configuration is that the polyurea coated panel is a low-carbon eco-friendly product and the quality is very good chemical and physical properties to provide the best clean and hygienic water tank In particular, the third purpose is to manufacture the panel at room temperature, so it takes less energy and is easier to work, which is economically advantageous. The fourth purpose is to make the water tank panel with excellent durability and hygiene with semi-permanent coating. To make a water tank of excellent quality, and the fifth object is a conventional coating product The more robust reticulated film is formed to provide excellent adhesion strength, impact strength and abrasion resistance. The sixth objective is that the catalyst is uniformly reactive because it does not use a catalyst. The seventh purpose is that the elastic body having a variety of physical properties and the soft to hard elastomers can be manufactured, and the eighth purpose can be a pigment combination to improve the color and light safety Therefore, it is possible to realize the desired high function by combining the color of the desired color and high function of the consumer, and the ninth object of the present invention is to contribute to the development of the national economy by contributing to the health of the people above all. This greatly improves the quality and reliability of the product, which can give consumers a good image. To provide a water tank polyurea coating panel and a manufacturing method for.

In order to achieve the above object, the present invention provides a series of panel manufacturing processes for cutting, embossing, and bending a metal sheet to a size of a panel for a water tank: a shot blast to remove and pretreat foreign substances on the surface of the metal sheet. ) Or sand blast treatment process; Subsequently, the process of heat-treating using a hot air blower to remove the foreign matter remaining on the sandblasted panel surface once again and maintain the optimum temperature during polyurea coating; Thereafter, before the coating layer is formed on the surface of the panel, a process of impingement mixing and spraying the coating liquid mixed with an isocyanate (ISOCYANATE), which is a main material of polyurea, an amine (AMINE) and an additive, which are cured at high temperature and high pressure; And then a natural drying step of drying the panel in which the coating is completed in nature.

As described in detail above, the present invention is provided with a panel manufacturing process, a sand blast treatment process, a heat treatment process, a collision mixing spray process, and a natural drying process.

According to the present invention, the polyurea coated panel is a low-carbon eco-friendly product, and the quality is very excellent in chemical and physical properties to provide the best clean and hygienic water tank.

In particular, the present invention is economical because it takes less energy and facilitates the operation of coating the metal panel at room temperature.

In addition, the present invention is to produce a water tank of excellent quality by producing a water tank panel is a semi-permanent excellent durability and very good hygiene.

In addition, the present invention is to provide an effect of excellent adhesion strength, impact strength and wear resistance by forming a reticular coating film than the conventional coating products.

In addition, the present invention has the advantage that the reactivity is uniform because no catalyst is used, and in particular, there is no advantage in the emission of volatile organic compounds (VOCs) at all.

In addition, the present invention has the advantage of being able to manufacture elastic bodies having various physical properties and soft to hard elastomers.

In addition, since the present invention can be a pigment combination that can improve the color and light safety, it is possible to implement the desired high functionality by combining the material of the color and high functionality desired by the consumer.

The present invention is intended to contribute to the development of the national economy by contributing to the health of people above all.

The present invention is a very useful invention that can significantly improve the quality and reliability of the product due to the above-described effect so that consumers can plant a good image.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention for achieving this effect are as follows.

Figure 1 (a) is a flow chart of the manufacturing method of a conventional polyethylene coated panel,
(b) is a sectional view of main parts of a conventional polyethylene coated panel.
Figure 2 illustrates a method for producing a polyurea coated panel for a water tank applied to the present invention.
Command flow chart.
Figure 3 is a polyurea coating panel for water tank and main portion enlarged cross section applied to the present invention
Degree.
Figure 4 is for producing a polyurea coating panel for water tank applied to the present invention
Schematic diagram of a collision mixing jet device.

Polyurea coated panel for a water tank applied to the present invention and its manufacturing method is configured as shown in Figs.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

First, the present invention goes through a panel manufacturing process (S100), sand blast (sand blast) treatment step (S101) and the heat treatment step (S102) and the process of collision mixing spraying (S103) and natural drying step (S104) To prepare a polyurea coating panel 110 for a water tank.

This will be described in detail with reference to the following embodiments.

(Example 1)

The present invention is subjected to a series of panel manufacturing process (S100) of cutting, embossing, bending the metal steel sheet to the size of the panel for water tank 110 as shown in FIG.

Thereafter, a foreign material adhering to the surface of the metal sheet is removed and subjected to a shot blast or sand blast treatment process (S101).

Such a process creates a condition that the polyurea coating is firmly coated upon polyurea coating after removing foreign matters, rust, etc. attached to the panel surface and forming a fine uneven surface to remove foreign substances on the surface.

In particular, the pressure of the shot blast is maintained at 7 to 9 kgf / cm 2, because it causes deformation of the panel when the pressure is too high at 10 kgf / cm 2 or more.

Subsequently, the present invention undergoes a step (S102) of heat treatment using a hot air blower to remove the foreign matter remaining on the surface of the sandblasted panel once again and to maintain an optimum temperature during polyurea coating.

At this time, the temperature of the heat treatment process is preferably maintained at 30 ± 10 ℃.

That is, when the heat treatment temperature is 20 ℃ or less, there is a problem that less foreign matter is removed and the coating solution is not closely adhered later, and when the heat treatment temperature is 40 ℃ or more, unnecessary energy waste and deformation of the panel, so that the heating The treatment temperature is preferably 30 ± 10 ° C.

Then, the present invention uses an impingement mixture spraying apparatus shown in FIG. 4 to form a coating layer on the surface of the panel, and to form an isocyanate (ISOCYANATE), which is a main material of polyurea, and an amine (AMINE) and an additive, which makes a curing reaction. The mixed coating solution is subjected to a process of impingement mixture spraying at high temperature and high pressure (S103).

At this time, the polyurea (POLYUREA) applied to the present invention is a polyurea (-尿 素, polyurea), is an elastomer derived from the reaction product of the isocyanate component and the synthetic resin component, in particular, if the polyurea It is a linear compound made mainly by the reaction of diamine with urea and the reaction of diamine with diisocyanic acid. Urea resin is a typical example of a polymer bonded with urea group —NHCONH—.

The polyurea is a non-catalytic ultra-fast curing type that has gel time within 3 to 5 seconds after spraying, so that it can be sprayed without falling down even on slopes and vertical surfaces, and the drying time is within 30 seconds. It is almost unaffected and is less affected by climate change, humidity, heat and cold. (Applicable temperature: -40 ℃ ~ + 135 ℃).

In addition, the two-component 100% solids can be sprayed in a 1: 1 volume ratio without the use of solvents or diluents. And it can be prepared from the elastic body having a variety of physical properties and soft to hard elastomer.

In addition, it has excellent physical properties including tensile strength, elongation, abrasion resistance, and adhesive strength, and shows high thermal stability even at temperatures up to 177 ° C (mainly aromatic polyurea resins).

In addition, it is possible to formulate pigments that can improve color and light stability. In particular, aliphatic polyurea resins have long-term stability against UV for outdoor application.

In addition, since the catalyst is not used, the reactivity is uniform, and it can be applied by spray method, Pour method, Reaction Injection Mold (RIM) method, etc., and it can be easily installed by using a spray machine. You can make a product.

Because of the above advantages, the application of polyurea resin to the industrial field can create many advantages in many aspects such as worker safety, process shortening, productivity improvement, profitability, and competitiveness.

The isocyanate (ISOCYANATE) and amine (AMINE) and the additives applied in the present invention are preferably made in a ratio of 5: 4: 1.

That is, when the isocyanate (ISOCYANATE) is 5 or more, the mixing power with other materials is weakened, and when the amine (AMINE) is 4 or more, there is a problem that the work hardens too quickly, and when the additive is 1 or more, the dispersing power is weakened. Since the isocyanate (ISOCYANATE) and amine (AMINE) and the additive is preferably made in a ratio of 5: 4: 1.

Meanwhile, the additive applied to the present invention includes vegetable sulfur, gold (Au), silver (Ag), platinum (Pt), and loess in a ratio of 1: 1: 1: 1: 1.

At this time, the vegetable sulfur is extracted from plants such as garlic, onion, cabbage, ginseng, soybean, kale, situation mushroom, mugwort, and edible as a white, harmless substance with no odor. Detoxify and purify. It also produces enzymes, strengthens the roles of hormones (insulin) and amino acids, and has excellent functions in relieving diuresis and constipation.It also suppresses the synthesis of cholesterol, breaks down blood clots, and activates metabolism. As shown in the synonym, it relieves and removes inflammation of skin wounds and has excellent sterilization function for skin regeneration and wounds, and also produces collagen to alleviate and delay skin aging and hair loss progression, and prevent deformed keratin disease of nails and toenails. This would have been so.

And gold (Au) is to provide the effect of high electrical conductivity and high far infrared reflectance.

In addition, silver (Ag) will provide a bactericidal and deodorant effect.

In addition, platinum (Pt) has antibacterial effects on all viruses, and has a catalytic and deodorizing function.

Finally, ocher contains a large amount of far-infrared rays, which provide cellular physiology, release of harmful substances and photoelectric effect.

The present invention is to produce a polyurea coating panel for the final water tank through a natural drying process (S104) for drying the panel in which the coating is completed in nature.

(Example 2)

The isocyanate (ISOCYANATE) applied to the present invention is to provide a polyurea coating panel for water tank by providing an antibacterial and deodorizing effect, as well as the charcoal or ganban stone powder to improve the adsorption and decomposition function of the contained pollutants. .

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The present invention as described above provides a polyurea coated panel excellent in antibacterial and deodorant effect.

(Example 3)

The present invention is to produce a polyurea coating panel for a water tank at a high temperature of 70 ~ 80 ℃, a high pressure of 3000 ~ 4000PSI of the coating machine in the process of impingement mixing spraying process.

In this case, when the temperature of the high temperature is 70 ° C. or less, it is difficult to mix the coating liquid, and when the temperature of the high temperature is 80 ° C. or more, the coating liquid is too thin. Thus, the temperature of the high temperature is preferably 70 to 80 ° C.

When the pressure of the high pressure is 3000PSI or less, it is difficult to mix the coating liquid, and when the pressure of 4000PSI or more, the coating liquid is too thin. Thus, the pressure of the high pressure is preferably 3000 to 4000PSI.

(Example 4)

The process of impingement mixture spraying applied to the present invention,

The transfer pump supplies the raw material of each coating liquid to the collision mixing spray device, and ejects the coating liquid to the outside through the collision mixing spray gun, but the heater is connected to the hose connected between the collision mixing spray device and the collision mixing spray gun to supply the coating liquid raw material. After preheating to ˜75 ° C., a polyurea coated panel for water tank is manufactured by spraying the surface of the panel at an injection pressure of 2000 to 3000 PSI.

In this case, when the raw material of the coating liquid is 65 ° C. or less, it is difficult to adhere to the panel. When the raw material of the coating liquid flows down, the raw material of the coating liquid is preferably 65 to 75 ° C. because the raw material of the coating liquid flows down.

In addition, when the injection pressure is 2000PSI or less, the coating liquid is hardly adhered to the panel, and when the spraying pressure is 3000PSI or more, the coating surface may be uneven to a too strong pressure, so the injection pressure is preferably 2000 to 3000PSI.

The method of spraying uniformly on both surfaces of the polyurea coating panel for water tank applied to the present invention maintains the distance and angle that the metal panel and the spray gun can be evenly distributed on the panel by at least 1m apart, evenly in a zigzag method. While spraying, the thickness of the coating layer 111 is about 0.5 mm or more.

The present invention is to produce a polyurea coating panel 110 for a water tank in which the coating layer 111 is formed by the manufacturing method of each embodiment described above.

Test results of the polyurea coating panel for water tank of the present invention prepared as described above in the Korea Testing Institute is as follows.

      Test Report-Sample Name: POLYUREA Test Items unit Results Test Methods Trichloroethylene mg / L Not detected KWWA A 108: 2004 benzene mg / L Not detected KWWA A 108: 2004 zinc mg / L Not detected KWWA A 108: 2004 iron mg / L Not detected KWWA A 108: 2004 Copper mg / L Not detected KWWA A 108: 2004 salt mg / L Not detected KWWA A 108: 2004 manganese mg / L Not detected KWWA A 108: 2004 Chlorine Ion mg / L Not detected KWWA A 108: 2004 Anionic surfactant mg / L Not detected KWWA A 108: 2004 phenol mg / L Not detected KWWA A 108: 2004 Dichloromethane mg / L Not detected KWWA A 108: 2004 Tetrachloroethylene mg / L Not detected KWWA A 108: 2004 Epichlorohydrin mg / L Not detected KWWA A 108: 2004 Amine mg / L Not detected KWWA A 108: 2004 Formaldehyde mg / L Not detected KWWA A 108: 2004

Elution area: 50cm2 / Elution solution L

Test Report-Sample Name: POLYUREA Test Items unit Results Test Methods Evaporation residue mg / L 17.0 KWWA A 108: 2004 Chromaticity Degree 0.5 or less KWWA A 108: 2004 Turbidity NTU 0.2 or less KWWA A 108: 2004 flavor - clear KWWA A 108: 2004 smell - clear KWWA A 108: 2004

Elution area: 50cm2 / Elution solution L

      Test Report-Sample Name: POLYUREA Test Items unit Results Test Methods cadmium mg / L Not detected KWWA A 108: 2004 Mercury mg / L Not detected KWWA A 108: 2004 Selenium mg / L Not detected KWWA A 108: 2004 lead mg / L Not detected KWWA A 108: 2004 arsenic mg / L Not detected KWWA A 108: 2004 Hexavalent chrome mg / L 0.001 KWWA A 108: 2004 draft mg / L Not detected KWWA A 108: 2004 Nitrate nitrogen mg / L Not detected KWWA A 108: 2004 F mg / L Not detected KWWA A 108: 2004 Carbon tetrachloride mg / L Not detected KWWA A 108: 2004

Elution area: 50cm2 / Elution solution L

As a result of the test as described above, the present invention was able to confirm that the polyurea coated panel is a low-carbon eco-friendly product and the quality has very good chemical and physical properties, thereby providing the best clean and sanitary water tank.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

It is to be understood that the invention is not to be limited to the specific forms thereof which are to be described in the foregoing description, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

The technical idea of the polyurea coated panel for the water tank of the present invention and the manufacturing method thereof can actually repeat the same result, and in particular, by implementing the present invention, it is possible to promote technological development and contribute to industrial development, which is worth protecting. There is enough.

<Explanation of symbols for the main parts of the drawings>
110: water tank panel
111: coating layer

Claims (8)

A series of panel manufacturing processes for cutting, embossing, and bending metal steel plates to the size of the water tank panel: a shot blast or sand blast that cleans and removes foreign matter on the surface of the metal steel sheet. Treatment process; Subsequently, the process of heat-treating using a hot air blower to remove the foreign matter remaining on the sandblasted panel surface once again and maintain the optimum temperature during polyurea coating; Thereafter, before the coating layer is formed on the surface of the panel, a process of impingement mixing and spraying the coating liquid mixed with an isocyanate (ISOCYANATE), which is a main material of polyurea, an amine (AMINE) and an additive, which are cured at high temperature and high pressure; And then a natural drying process of drying the panel in which the coating is completed in nature; a method of manufacturing a polyurea coating panel for a water tank by
The isocyanate (ISOCYANATE) further provides a charcoal or ganban stone powder to provide the antibacterial and deodorizing effect as well as to improve the adsorption and decomposition of the pollutants contained, the additives include vegetable sulfur, gold (Au) and silver (Ag) ), Platinum (Pt) and ocher in a ratio of 1: 1: 1: 1: 1, wherein the method for producing a polyurea coated panel for a water tank.
delete delete delete delete delete The method according to claim 1,
The collision mixing spraying process,
The transfer pump supplies the raw material of each coating liquid to the collision mixing spray device, and ejects the coating liquid to the outside through the collision mixing spray gun, but the heater is connected to the hose connected between the collision mixing spray device and the collision mixing spray gun to supply the coating liquid raw material. A method for producing a polyurea coated panel for a water tank, characterized by spraying the surface of the panel at a spray pressure of 2000 to 3000 PSI after preheating to ˜75 ° C.
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