KR102442868B1 - Polyurea paint and coating and waterproofing method using the same - Google Patents

Abstract

A high-molecular ultra-fast setting polyurea paint composition with excellent water resistance and heat resistance according to the present invention includes: 20 to 50 parts by weight of a binder including 35 to 55 parts by weight of a base including isocyanate and 45 to 65 parts by weight of a curing agent including at least one of polyetheramine and diethyltoluenediamine; 10 to 40 parts by weight of an additive including 30 to 90 parts by weight of an inorganic filler including at least one of alumina, diatomaceous earth, titania, and calcium carbonate and 5 to 20 parts by weight of a discoloration inhibitor including at least one of linseed oil, zinc oxide, and 3-hydroxy benzophenone; and 20 to 50 parts by weight of a solvent including at least one of purified water, ethanol, and isopropyl alcohol.

Description

Polyurea paint and coating and waterproofing method using the same

The present invention relates to a high molecular weight polyurea paint and a coating and waterproofing method using the same. More specifically, the present invention uses polyurea as a binder to provide a fast drying speed and prevent yellowing to maintain the quality of the painted surface for a long time It relates to a high-molecular priming polyurea paint and a coating and waterproofing method using the same to provide additional functions such as flame retardancy.

Waterproof coating is a method of forming a coating film by applying waterproof paint indoors and outdoors. It is spotlighted by contractors and clients who want a waterproof coating.

Such polyurea is generally prepared as a two-component paint of a prepolymer and a curing agent due to a short curing time, but attempts are being made to add an additive to the two-component paint of polyurea to reinforce the physical properties of the waterproof paint.

As a prior art for such a polyurea waterproof paint, Korean Patent No. 10-1772903 (Title of the Invention: Polyurea coating film waterproofing material composition supporting high durability) is registered.

The prior art is a prepolymer component by the reaction of isocyanate and polyol having a molar ratio of isocyanate and polyol of 10: 1 to 15: 1; a curing agent component capable of reacting with the terminal group according to the terminal group component of the prepolymer component; And a polyurea coating film waterproofing material composition obtained by mixing carbon milled fibers obtained by pulverizing carbon fibers, wherein the polyurea coating film waterproofing composition contains 1 to 3% by weight of carbon milled fibers based on the prepolymer component, or the curing agent A polyurea coating waterproofing material composition comprising 1 to 3% by weight of carbon milled fiber based on the component is provided.

According to the prior art, durability is improved by mixing carbon milled fiber pulverized carbon fiber with polyurea-based waterproof paint. There is a problem that the physical properties of the waterproof paint cannot be further improved by this method.

Therefore, in order to solve the above-mentioned problems, a high molecular weight polyurea paint, which can prevent yellowing in a polyurea paint having a fast drying time, and also have a high flame retardancy and a drying rate control function, and There is a need to develop a painting and waterproofing method using the same.

Korean Registered Patent No. 10-1772903

The main object of the present invention is to provide a coating composition capable of preventing yellowing in addition to a fast drying rate and excellent waterproof and heat resistance.

Another object of the present invention is to add flame retardancy to the paint.

Another object of the present invention is to enable secondary prevention of discoloration that may occur due to oxidation by chemical substances or external contaminants.

It is a further object of the present invention to advantageously prevent gradual deterioration and control viscosity and flowability in materials for preventing discoloration.

In order to achieve the above object, the high molecular weight polyurea paint composition according to the present invention comprises 35 to 55 parts by weight of a base including isocyanate, and at least one of polyetheramine and diethyltoluenediamine. 20 to 50 parts by weight of a binder including 45 to 65 parts by weight of a curing agent including any one; 30 to 90 parts by weight of an inorganic filler comprising at least one of alumina, diatomaceous earth, titania, and calcium carbonate, Linseed oil, zinc oxide, 3-hydroxybenzo 10 to 40 parts by weight of an additive including 5 to 20 parts by weight of a discoloration inhibitor including at least one of phenone (3-Hydroxy benzophenone); Purified water, ethanol, 20 to 50 parts by weight of a solvent containing at least one of isopropyl alcohol; characterized in that it contains.

Furthermore, the additive is characterized in that it further comprises 5 to 30 parts by weight of a flame retardant comprising at least one of aluminum hydroxide, magnesium hydroxide, zinc tin oxide, and phosphorus-based flame retardant. .

In addition, the additive is characterized in that it further comprises 1 to 10 parts by weight of a discoloration preventing agent including benzotriazole.

In addition, the discoloration preventing functional agent, 20 to 40 parts by weight of the benzotriazole, 10 to 40 parts by weight of magnesium aluminum silicate, 50 to 70 parts by weight of purified water, 5 to 20 parts by weight of glycerin 100 to 500 rpm mixing for 5 to 15 minutes to prepare a first material; 80 to 90 parts by weight of the first material, 5 to 10 parts by weight of Vinyltris(2-Methoxyethoxy)Silane, and 1 to 10 parts by weight of saponin preparing a material; 85 to 95 parts by weight of the second material, 1 to 5 parts by weight of 11-eicosenoic acid, and 1 to 10 parts by weight of a film strengthening agent including polycitronellol Completing; characterized in that it is manufactured through.

According to the polymer priming polyurea paint of the present invention and the coating and waterproofing method using the same,

1) Based on polyurea resin, it can show very fast drying speed, so it does not take a long time to dry after construction. Prevents yellowing over time through the anti-discoloration agent contained in

2) By adding flame retardants, flame retardancy and thermal stability are increased to protect buildings from fire and to prevent fire transfer,

3) By adding a discoloration prevention functional agent containing benzotriazole, it is possible to prevent secondary discoloration that may occur due to oxidation by chemical substances or external contaminants, thereby maximizing the discoloration prevention function.

4) Prevent discoloration by allowing the anti-discoloration functional agent to provide the functions of oxidation prevention, film formation, and film strengthening step by step, and at the same time, thickening and emulsifying ingredients aimed at improving thickening and mixing properties are mixed together step by step There is an effect of preventing excessive decrease in viscosity due to the addition of the agent and maintaining the viscosity at an appropriate level.

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1 is a conceptual diagram showing a schematic configuration of a construction surface on which a polyurea paint of the present invention is applied.
Figure 2 is a flow chart showing the steps of preparing the discoloration prevention functional agent of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each figure refer to like components.

The polymer priming polyurea paint of the present invention preferably contains 20 to 50 parts by weight of a binder, 10 to 40 parts by weight of an additive, and 20 to 50 parts by weight of a solvent.

Here, preferably, the binder is based on a polyurea resin in which a chain polymerization has occurred by mixing a base containing an isocyanate group and a curing agent containing an amine group. It may be desirable to immediately use it for painting and waterproofing.

Polyurea resin is a copolymer containing urea as a unit, and when a polyurea resin coating film is formed, it shows excellent physical properties such as hydrophobicity, fast curing speed, and thermal stability, and is a material with high utility value.

Specifically, the polyurea resin forms a polyurea bond of R-NH-CO-NH-R, which includes a base containing an isocyanate group (-NCO) and a curing agent containing an amine group (-NH ₂ ). , it is possible to express intrinsic physical properties through polymerization between the base and the curing agent.

Therefore, in the case of the binder made of the polyurea resin as described above, it is based on 35 to 55 parts by weight of the base and 45 to 65 parts by weight of the curing agent. It can be mixed with additives and solvents.

Here, more preferably, the base is referred to as a material containing isocyanate. Examples thereof include isophorone diisocyanate (IPDI), methylene diphenyl diisocyanate (MDI), hexamethylene diisocyanate (HMDI), and xylene diisocyanate (XDI). ), naphthalene diisocyanate (NDI), toluene diisocyanate (TDI), and the like, and even if the material is not mentioned, any material containing an isocyanate group may be used as a base.

Further, more preferably, the base may be a material itself including at least one of MDI, IPDI, HDMI, XDI, NDI, and TDI including an isocyanate group, or the base itself may be a prepolymer.

Here, the prepolymer refers to a material in a state in which polymer polymerization is stopped at a point where molding and management are easy, and therefore, a small amount of a curing agent is added to a material capable of forming a polyurea bond including an isocyanate group. Of course it could be.

At this time, when the base is prepared in the form of a prepolymer, the base is mixed with at least one of the aforementioned MDI, IPDI, HDMI, XDI, NDI, and TDI with a small amount of polyetheramine or polyethylene glycol for curing so that some polymerization takes place. may have been

If polyetheramine is used to form the prepolymer, the drying speed is maximized by focusing on shortening the curing time, and when using polyethylene glycol, the curing speed is partially lowered to increase workability.

When the base is a prepolymer, there is no limitation on the material used for curing the prepolymer, which may refer to the conventional isocyanate-based urea prepolymer or urethane prepolymer manufacturing method, so a more detailed description will be omitted.

More preferably, in the case of a base, 50 to 70 parts by weight of at least any one of MDI, IPDI, HDMI, XDI, NDI, and TDI, and 30 to 50 parts by weight of at least any one of polyethylene glycol and polyetheramine are mixed, and at 70 to 90° C. It may consist of a prepolymer prepared by maintaining for 3 to 6 hours.

The curing agent mixed with the base is a material that provides an amine group to the base containing an isocyanate group to form polyurea, and the curing agent providing the amine group is preferably polyetheramine and diethyltoluenediamine ) can be used at least one of.

Therefore, it can be said that the isocyanate group included in the base and the amine group included in the curing agent form a polyurea bond to form a polyurea resin. At this time, more preferably, it may consist of a mixture of polyetheramine and diethyltoluenediamine. When diethyltoluenediamine is added, diethyltoluenediamine can assist the function of polyetheramine and adjust the curing rate in part. Therefore, the polyurea paint of the present invention can be cured at an appropriate rate.

Further, the additive preferably includes an inorganic filler and a discoloration inhibitor. Preferably, the additive may consist of a mixture containing 30 to 90 parts by weight of the inorganic filler and 5 to 20 parts by weight of the discoloration inhibitor.

In this case, the inorganic filler may include at least one of alumina, diatomaceous earth, titania, and calcium carbonate, and preferably, the inorganic filler is not limited in its mixed composition, but may be a mixture of alumina, diatomaceous earth, titania, and calcium carbonate. In this case, the composition constituting the inorganic filler may all be in the form of a powder, and there is no particular limitation on the particle size.

Alumina (aluminum oxide) functions to increase the durability, abrasion resistance, heat resistance, and corrosion resistance of the paint film when included in the paint. Diatomaceous earth has excellent thermal insulation and moisture adsorption properties. It prevents and improves insulation. Titania (titanium dioxide) has an excellent hiding power, and has the effect of improving the strength of the paint film and also having fire resistance. Calcium carbonate exhibits excellent economic feasibility and at the same time has a high effect on improving the strength of the coating film.

Furthermore, the discoloration inhibitor included in the additive comprises at least any one of Linseed oil, zinc oxide, and 3-hydroxy benzophenone. Accordingly, it is possible to more effectively prevent yellowing of the paint film.

Zinc oxide and 3-hydroxybenzophenone have functions of absorbing, reflecting and scattering ultraviolet rays, so that when the polyurea paint of the present invention is applied to a building, it prevents discoloration of the paint film by ultraviolet rays caused by sunlight, etc. It performs the function of an inhibitor and provides a function to prevent discoloration due to oxidation over time.

Linseed oil is a vegetable drying oil made by refining flaxseed oil. It provides a unique luster to the coating film and at the same time prevents cracks in the coating film to prevent deterioration or discoloration of the coating film due to cracks. Preferably, rather than independently using linseed oil as a discoloration inhibitor, linseed oil is further used with at least one of zinc oxide and 3-hydroxy benzophenone selected to add a discoloration prevention function by preventing crack formation. It can be said that it is more preferable to

Furthermore, the polyurea paint of the present invention is based on being a water-soluble paint, and therefore, as a solvent, at least one of water-soluble solvents such as purified water, ethanol, and isopropyl alcohol may be used. Rather than using only purified water as a solvent, purified water and ethanol It can be used as a solvent by mixing or mixing purified water and isopropyl alcohol.

At this time, there is no limitation on the mixing ratio of the solvent, and when using a solvent in which ethanol or isopropyl alcohol is added to purified water, freezing and freezing can be prevented, so that even if the paint of the present invention is stored at a low temperature, the composition for the paint is frozen it can prevent

As described above, the polymer priming polyurea paint composition of the present invention can exhibit a very fast drying speed based on the polyurea resin, so that it does not take a long time to dry after construction, and furthermore, due to the unique excellent waterproof and heat resistance of polyurea, It not only provides excellent waterproof performance, but also prevents yellowing from occurring over time through the anti-discoloration agent included in the additive.

1 is a conceptual diagram showing a schematic configuration of a construction surface on which a polyurea paint of the present invention is applied.

Referring to FIG. 1 , the coating and waterproofing method using the above-described polyurea coating composition of the present invention preferably includes a washing step, a waterproofing step, and a coating step.

(S1) washing step

First, the surface to be waterproofed and painted, that is, impurities of the target surface 1 that may be the inner wall of a building or the outer surface of a building structure or steel structure are removed. In this case, the removal of impurities is a process of removing foreign substances such as dust that may be attached to the surface of the target surface. In this case, the impurity removal process is preferably performed 1 to 5 times.

(S2) waterproof stage

Then, a polyurea paint (2) is first applied to the target surface (1) to perform a waterproofing treatment. In this case, a separate paint primer may be applied to the target surface before the polyurea paint 2 is applied, or the polyurea paint 2 may be directly applied to the cleaned target surface.

In other words, a separate waterproofing treatment for building structures, interior walls, and steel structures may be performed through the polyurea paint 2 applied to the target surface 1, and for this purpose, the polyurea paint 2 is first applied It is also possible that a separate waterproofing sheet is further attached to the entire target surface.

Preferably, when both the primer and the waterproof sheet are attached, the primer is first applied to the target surface (1), then the waterproof sheet is attached and a polyurea paint (2) is applied to the upper surface of the waterproof sheet to perform waterproofing treatment. have. Alternatively, it is also possible to first apply the polyurea paint 2 after applying the primer and attach the waterproof sheet.

Furthermore, at this time, preferably, the base and the curing agent included in the binder are mixed at high speed together with the additive and the solvent immediately before the first application of the polyurea paint 2 to prepare the polyurea paint and apply it.

Furthermore, after the first application, curing may be performed for 5 minutes to 2 hours, and since the polyurea paint 2 of the present invention is characterized by having a fast drying time, the secondary application to be described later is immediately applied after the primary application is completed. Of course it is also possible to do it.

(S3) painting step

Next, the polyurea paint (2) of the present invention is applied to the target surface (1) a second time, and the drying process is performed to complete the coating on the target surface (1). At this time, also in the secondary application, the base and the curing agent contained in the binder are mixed at high speed with the additive and the solvent immediately before the secondary application of the polyurea paint to prepare the polyurea paint 2 and apply it.

In addition, if a separate pigment is added when manufacturing the polyurea paint (2) used in the painting step, it is possible to perform painting with a desired color, and the polyurea paint (2) used for the secondary painting also has super-fast hardness. It goes without saying that curing of the coating film can be completed as quickly as it has.

In FIG. 1, the waterproofing step and the painting step are shown with the same layer as much as the same polyurea paint 2 is used. ,

Further preferably, the additive of the present invention may further include 5 to 30 parts by weight of a flame retardant, in this case, the additive may include 30 to 90 parts by weight of an inorganic filler, 5 to 20 parts by weight of a discoloration inhibitor, and 5 to 30 parts by weight of a flame retardant. .

In this case, the flame retardant may preferably include at least any one of aluminum hydroxide, magnesium hydroxide, zinc tin oxide, and phosphorus-based flame retardants, so that flame retardancy can be imparted using such a flame retardant. Furthermore, aluminum hydroxide, magnesium hydroxide, zinc stannate, and phosphorus-based flame retardants are economical and have high stability within the temperature range shown in general fires.

Also preferably at this time, the phosphorus-based flame retardant is at least one of trischloroethyl phosphate (TCEP: Tris (2-Chloroethyl) phosphate), trischloropropyl phosphate (TCPP: Tris (2-chloropropyl) phosphate), triethyl phosphate (TEPO: Triethylphosphate) It may include one, and if it includes phosphate, the type is not limited.

Therefore, as such a flame retardant is further included in the additive, the polyurea paint composition of the present invention can have flame retardancy, and can protect buildings from fire by increasing thermal stability and prevent fire transfer at the same time. is of course

In addition, the curing agent included in the above-mentioned binder, including an amine, serves to form a polyurea resin by binding to the base, and more preferably, the curing agent includes 75 to 95 parts by weight of the main agent and 5 to 25 parts by weight of the extender. can be made of

In this case, the subject may be a basic material of a curing agent containing at least one of polyether amine and diethyltoluene diamine, and the extender is 1,3-diaminopropane (1,3- Diamino propane) and 1,4-diaminobutane (1,4-Diamino butane) may be one comprising at least one.

Here, 1,3-diaminopropane and 1,4-diaminobutane are materials containing a plurality of amines and extend the polymer chain of the polyurea resin included in the prepared polyurea paint to further increase the strength of the coating film. provides a function that has

Therefore, by composing the curing agent as the main agent and the extender as described above, the curing agent supplies amine groups to enable polyurea bonding and at the same time extends the chain of the resin through the extender containing a plurality of amines to further increase the strength of the coating film. It is possible.

Further, the additive may include an additional composition for controlling the curing rate, and preferably, the curing rate of the polyurea paint of the present invention may be further adjusted by including 1 to 5 parts by weight of the rate controlling agent. When the speed control agent is included, the additive may include 30 to 90 parts by weight of an inorganic filler, 5 to 20 parts by weight of a discoloration inhibitor, and 1 to 5 parts by weight of the speed control agent.

At this time, the rate controlling agent includes at least one of lecithin, glycolipid, glyceryl stearate, and calcium stearate, it is possible to control the curing rate and improve flowability do.

Lecithin is a natural emulsifier derived from eggs, and glyceryl stearate is also a natural emulsifier derived from coconut and soybean oil as an esterification product of glycerin and stearic acid. Lecithin and glyceryl stearate are included in the urea paint composition. It controls the curing rate by increasing the mixability of various components and improving the flowability, and performs the function of making the surface smoother.

Glycolipids are glycolipids in which carbohydrates are bound to lipids by glycosidic bonds. They are a surfactant replacement ingredient extracted from sugar cane. Glycolipids do not foam but have a surfactant function, so they have a flowability and mixability between substances similar to emulsifiers. function to improve

Calcium stearate is a substance that functions as an antifoaming agent, lubricant, emulsifier, and stabilizer, and is also added as a fluidizing agent for paints. Therefore, as it is added as a speed control agent, it suppresses the generation of bubbles in the urea coating film, makes the surface smooth, improves flowability, and improves the mixability between materials.

Therefore, according to the addition of such a speed control agent, the mixing property and flow property of the polyurea paint of the present invention may be improved, and a function of controlling the curing speed may be included.

Furthermore, the above-described additive may further include a discoloration preventing agent to further reinforce the function of preventing yellowing of the dried polyurea paint film. have. In other words, the above-described additive may be a material further comprising 1 to 10 parts by weight of a discoloration preventing agent, and more specifically, in this case, the additive includes 30 to 90 parts by weight of an inorganic filler, 5 to 20 parts by weight of a discoloration preventing agent, and a discoloration preventing functional agent. It may contain 1 to 10 parts by weight.

Here, benzotriazole, the active ingredient of the discoloration preventing agent, is a material widely used as a corrosion inhibitor for metals or paints. perform a deterrent function.

Therefore, according to the addition of the above-mentioned discoloration inhibitor, yellowing caused by ultraviolet rays is primarily prevented, and by the addition of the discoloration prevention functional agent, discoloration that may occur due to oxidation by chemical substances or external contaminants can be prevented secondary. Thus, it is possible to maximize the anti-discoloration function.

Furthermore, the anti-discoloration functional agent may further include an additional composition in addition to benzotriazole. The step of preparing such a discoloration-preventing functional agent will be described in more detail as follows.

2 is a flowchart illustrating a step of preparing a discoloration preventing functional agent.

2, the discoloration preventing functional agent of the present invention comprises the steps of preparing a first material (S11), preparing a second material (S12), and completing the discoloration preventing functional agent (S13). can be manufactured through

(S11) preparing a first material

First, 20 to 40 parts by weight of benzotriazole, 10 to 40 parts by weight of magnesium aluminum silicate, 50 to 70 parts by weight of purified water, and 5 to 20 parts by weight of glycerin are mixed to prepare a first material.

As described above, benzotriazole is said to be a material capable of enhancing the anti-discoloration function by preventing discoloration that may occur due to oxidation by chemical substances or external contaminants, and purified water is selected as a solvent and can be easily dissolved.

Magnesium aluminum silicate is a complex silicate purified from minerals that exist in nature. It increases the viscosity of the anti-discoloration agent to prevent excessive decrease in the viscosity of the paint depending on the anti-discoloration agent including purified water, and further It provides an anti-caking function to prevent aggregation of various granular components to be added in a process to be described later.

Glycerin assists the effect of increasing the viscosity through magnesium aluminum silicate and at the same time improves the flowability by giving fluidity to the paint. It has a function to solve the freezing problem.

In this case, high-speed mixing may be performed in the mixing process for smooth dispersion of the granular magnesium aluminum silicate, and preferably, mixing is performed at 100 to 500 rpm for 5 to 15 minutes to prepare a uniform first material.

(S12) preparing a second material

Next, 80 to 90 parts by weight of the first material, 5 to 10 parts by weight of Vinyltris(2-Methoxyethoxy)Silane, and 1 to 10 parts by weight of saponin are mixed. A second material is prepared.

Vinyltris(2-methoxyethoxy)silane added at this time is a silane-based compound. When added to a discoloration preventing agent, it forms a dense coating film on the polyurea paint film to prevent oxidation and discoloration of the surface, thereby assisting the discoloration prevention function. and vinyltris(2-methoxyethoxy)silane can be more evenly mixed with the first material by saponin having a natural surfactant function.

Furthermore, since the first material contains an anti-caking agent, it goes without saying that vinyltris(2-methoxyethoxy)silane may be more evenly dispersed without agglomeration.

(S13) Step of completing the discoloration prevention functional agent

Finally, 85 to 95 parts by weight of the second material, 1 to 5 parts by weight of 11-eicosenoic acid, and 1 to 10 parts by weight of a film strengthening agent including polycitronellol are mixed to prevent discoloration. complete the piece

11-Eicosenoic acid, added in the last step, is a type of monounsaturated omega-9 fatty acid found in various vegetable oils and nuts. It softens the appearance of the polyurea paint film and at the same time adds gloss, and further provides an effect of adding flowability and fluidity of the paint composition by mixing with the saponin included in the second material.

Furthermore, the film strengthening agent is mixed to complete the discoloration prevention functional agent. At this time, the added polycitronellol is a polymer obtained by polymerization of citronellol, and serves as a film forming agent as well as a surfactant to prevent discoloration. It not only improves the mixing property of the functional agent, but also assists in film formation of the polyurea paint, and further serves to assist in the improvement of film strength.

According to the anti-discoloration functional agent of the present invention, vinyltris(2-methoxyethoxy)silane capable of forming a dense coating film on benzotriazole, which can add an antioxidant function, and Polycitronellol is included in stages to provide the functions of anti-oxidation, film formation, and film strengthening, and furthermore, these ingredients are mixed in stages, but thickening and emulsifying ingredients for the purpose of improving thickening and mixing properties are gradually combined together It provides the effect of preventing excessive decrease in viscosity due to the addition of a discoloration prevention functional agent and maintaining the viscosity at an appropriate level.

Furthermore, since these thickening and emulsifying components are also mixed together step by step during the manufacture of the first material, the second material, and the finished anti-discoloration functional agent, the anti-discoloration functional agent can also be adjusted from the manufacturing process to have an appropriate level of viscosity and flowability. have

In order to explain the physical properties of the polyurea paint composition of the present invention, the evaluation results of Examples and Comparative Examples will be compared and described. Examples consist of preferred Examples 1 to 4 of the polyurea paint composition of the present invention, and the comparative example is a polyurea paint composition containing no discoloration inhibitor.

[Example 1]

(1) binder

40 g of a prepared base was prepared by mixing 22 g of methylene diphenyl diisocyanate and 18 weight g of polyetheramine having an average molecular weight of 2000 and maintaining the mixture in a reactor at 85° C. for 4 hours. As the curing agent, 60 g of polyetheramine having an average molecular weight of 2000 was prepared.

(2) additives

3 g of benzotriazole, 1.5 g of magnesium aluminum silicate, 5 g of purified water, and 0.5 g of glycerin were mixed at 300 rpm for 10 minutes to prepare 10 g of a first material.

8.5 g of the prepared first material, 1 g of vinyltris (2-methoxyethoxy) silane, and 0.5 g of saponin were mixed to prepare 10 g of a second material.

9 g of the prepared second material, 0.3 g of 11-eicosenoic acid, and 0.7 g of polycitronellol as a film strengthening agent were mixed to prepare 10 g of a discoloration preventing agent 1 .

70 g of titania powder as an inorganic filler, 10 g of 3-hydroxybenzophenone as a discoloration inhibitor, 10 g of aluminum hydroxide as a flame retardant, and 10 g of the above-described discoloration preventing functional agent 1 were mixed to prepare an additive 100 g.

(3) solvent

As a solvent, 100 g of purified water was prepared.

(4) Completion of the composition

The polyurea paint of Example 1 was prepared by mixing 20 g of the above-described base, 30 g of polyetheramine, 25 g of additive, and 25 g of solvent at 300 rpm for 1 minute at high speed.

[Example 2]

(1) binder

40 g of a prepared base was prepared by mixing 22 g of methylene diphenyl diisocyanate and 18 weight g of polyetheramine having an average molecular weight of 2000 and maintaining the mixture in a reactor at 85° C. for 4 hours. As the curing agent, 60 g of polyetheramine having an average molecular weight of 2000 was prepared.

(2) additives

70 g of titania powder as an inorganic filler, 10 g of 3-hydroxybenzophenone as a discoloration inhibitor, 10 g of aluminum hydroxide as a flame retardant, and 10 g of benzotriazole as a discoloration preventing agent were mixed to prepare 100 g of additive.

(3) solvent

As a solvent, 100 g of purified water was prepared.

(4) Completion of the composition

The polyurea paint of Example 2 was prepared by mixing 20 g of the above-described base, 30 g of polyetheramine, 25 g of additive, and 25 g of solvent at 300 rpm for 1 minute at high speed.

[Example 3]

(1) binder

40 g of a prepared base was prepared by mixing 22 g of methylenediphenyl diisocyanate and 18 weight g of polyetheramine having an average molecular weight of 2000 and maintaining the mixture in a reactor at 85° C. for 4 hours. As the curing agent, 60 g of polyetheramine having an average molecular weight of 2000 was prepared.

(2) additives

100 g of additive was prepared by mixing 80 g of titania powder as an inorganic filler, 10 g of 3-hydroxybenzophenone as a discoloration inhibitor, and 10 g of aluminum hydroxide as a flame retardant.

(3) solvent

As a solvent, 100 g of purified water was prepared.

(4) Completion of the composition

The polyurea paint of Example 3 was prepared by mixing 20 g of the above-described base, 30 g of polyetheramine, 25 g of additive, and 25 g of solvent at 300 rpm for 1 minute at high speed.

[Example 4]

(1) binder

40 g of a prepared base was prepared by mixing 22 g of methylene diphenyl diisocyanate and 18 weight g of polyetheramine having an average molecular weight of 2000 and maintaining the mixture in a reactor at 85° C. for 4 hours. As the curing agent, 60 g of polyetheramine having an average molecular weight of 2000 was prepared.

(2) additives

100 g of additive was prepared by mixing 90 g of titania powder as an inorganic filler and 10 g of 3-hydroxybenzophenone as a discoloration inhibitor.

(3) solvent

100 g of purified water was prepared as a solvent.

(4) Completion of the composition

The polyurea paint of Example 4 was prepared by mixing 20 g of the above-described base, 30 g of polyetheramine, 25 g of additive, and 25 g of solvent at 300 rpm for 1 minute at high speed.

[Comparative example]

(1) binder

40 g of a prepared base was prepared by mixing 22 g of methylene diphenyl diisocyanate and 18 weight g of polyetheramine having an average molecular weight of 2000 and maintaining the mixture in a reactor at 85° C. for 4 hours. As the curing agent, 60 g of polyetheramine having an average molecular weight of 2000 was prepared.

(2) additives

100 g of titania powder was prepared as an additive.

(3) solvent

100 g of purified water was prepared as a solvent.

(4) Completion of the composition

20 g of the above-described base, 30 g of polyetheramine, 25 g of additive, and 25 g of solvent were mixed at high speed at 300 rpm for 1 minute to prepare a polyurea paint of Comparative Example.

A test was performed on the polyurea paint film prepared by applying the compositions of Examples 1 to 4 and Comparative Examples to the construction surface.

Mechanical properties: In order to measure mechanical properties, tensile strength and elongation at break were measured according to ASTM D638 (50 mm/min).

Tear strength: According to ASTM D624, tear strength was measured using the Trouser method among "Tear Strength - ASTM D624 Plastic Test Standard".

Hardness: The hardness was measured using a Shore hardness tester (TELCLOCK Type A) in accordance with ASTM D2240.

Lead test: In accordance with the test method of KS M 5000, the lead test was conducted through a lead test meter.

Concealment rate: The hiding rate was tested according to KS M ISO 2814.

Flame retardancy: After burning for 60 seconds at 15 cm perpendicular to the lined specimen using a gas torch, the state of the coating film was observed to confirm ignition.

Discoloration resistance: After irradiating a 15W ultraviolet lamp emitting a wavelength of 315~400nm at a distance of 20cm from the coating film for 20 days, color discoloration was checked.

Table 1 is a table showing the experimental results. The tensile strength
(psi) tear strength
(pli) elongation
(%) Hardness
(Shore A Type) Concealment rate
(%) flame retardant discoloration Example 1 1868 278 402 92 96 ○ × Example 2 1864 275 401 92 95 ○ × Example 3 1862 274 395 90 95 ○ × Example 4 1860 271 380 89 94 △ × comparative example 1789 260 360 86 92 × ○

As shown in Table 1 above, it was confirmed that the paints of Examples 1 to 4 of the present invention were generally superior in tensile strength, tear strength, elongation, hardness, hiding rate, flame retardancy, and discoloration resistance compared to the paints of Comparative Examples. can
As described so far, the composition and action of the polymer priming polyurea paint according to the present invention and the coating and waterproofing method using the same are expressed in the above description and drawings, but this is only an example and the idea of the present invention is not explained above. And it is not limited to the drawings, and various changes and modifications are possible without departing from the technical spirit of the present invention.

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1: Target surface 2: Polyurea paint

Claims (9)

A high molecular weight polyurea coating composition comprising:
20 to 50 parts by weight of a binder comprising 35 to 55 parts by weight of a base including isocyanate and 45 to 65 parts by weight of a curing agent including at least one of polyetheramine and diethyltoluenediamine;
30 to 90 parts by weight of an inorganic filler comprising at least one of alumina, diatomaceous earth, titania, and calcium carbonate, Linseed oil, zinc oxide, 3-hydroxybenzo 5 to 20 parts by weight of a discoloration inhibitor containing at least one of phenone (3-Hydroxy benzophenone), and at least any of aluminum hydroxide, magnesium hydroxide, zinc tin oxide, phosphorus-based flame retardant 10 to 40 parts by weight of an additive including 5 to 30 parts by weight of a flame retardant including one;
Purified water, ethanol, and 20 to 50 parts by weight of a solvent containing at least one of isopropyl alcohol; Polyurea paint composition comprising a. The method of claim 1,
The phosphorus-based flame retardant,
Trischloroethyl phosphate (TCEP: Tris (2-Chloroethyl) phosphate), trischloropropyl phosphate (TCPP: Tris (2-chloropropyl) phosphate), triethyl phosphate (TEPO: Triethylphosphate) comprising at least one which is a polyurea paint composition. The method of claim 1,
The curing agent.
75 to 95 parts by weight of a main agent comprising at least one of polyether amine and diethyltoluene diamine;
1,3-diamino propane (1,3-Diamino propane), 1,4-diamino butane (1,4-diamino butane) characterized in that it contains 5 to 25 parts by weight of an extender containing at least one A polyurea coating composition comprising The method of claim 1,
the additive.
Poly Urea paint composition. The method of claim 1,
The additive is
Polyurea paint composition, characterized in that it further comprises 1 to 10 parts by weight of a discoloration preventing agent containing benzotriazole. 6. The method of claim 5,
The discoloration prevention functional agent,
20 to 40 parts by weight of the benzotriazole, 10 to 40 parts by weight of magnesium aluminum silicate, 50 to 70 parts by weight of purified water, and 5 to 20 parts by weight of glycerin are prepared by mixing at 100 to 500 rpm for 5 to 15 minutes 1 preparing a material;
80 to 90 parts by weight of the first material, 5 to 10 parts by weight of Vinyltris(2-Methoxyethoxy)Silane, and 1 to 10 parts by weight of saponin preparing a material;
85 to 95 parts by weight of the second material, 1 to 5 parts by weight of 11-eicosenoic acid, and 1 to 10 parts by weight of a film strengthening agent including polycitronellol Completing; characterized in that produced through, polyurea paint composition. A coating and waterproofing method using the polyurea paint composition according to claim 1, comprising:
a washing step of removing impurities from the target surface;
A waterproofing step of performing a waterproofing treatment by first applying the polyurea paint to the target surface;
Painting and waterproofing method comprising a; coating step of completing the painting by applying the polyurea paint to the target surface a second time. delete delete

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