KR100864525B1 - Waterproof structure and multi-waterproof method using double polyurethane layer - Google Patents

Abstract

A waterproof layer structure and a multipurpose waterproofing method using a double polyurethane layer are provided to prevent a waterproof layer from being cracked, getting loose and separating by forming a polyurethane layer in plural layers and making an upper layer function as a flooring material having abrasion resistance and a lower layer function as a waterproof layer securing elongation. A waterproof layer structure comprises a primer layer(2) forming a base coat, and a top coating layer(4) forming a middle coat with a double polyurethane layer composed of a soft polyurethane layer(3a) and a hard polyurethane layer(3b) and forming a top coat. The primer layer forming the base coat is a layer for securing adhesive strength with a waterproof layer forming a slab(1) and a middle coat, and the top coating layer forming the top coat is a layer for waterproofing from natural environment such as ultraviolet rays and protecting an urethane layer forming a middle coat. A multipurpose waterproofing method using a double polyurethane layer comprises the steps of: leveling a base; applying primer on the base evenly using a roller or a spray; forming a middle coat by forming a waterproof layer with polyurethane; and forming a top coat by spraying using a roller or a spray.

Description

Waterproof layer and multi-waterproof method using double polyurethane layer

The present invention relates to a waterproof layer structure and a multi-purpose waterproofing method using a double polyurethane layer, in detail, in the waterproofing method using a polyurethane, while maintaining the waterproofing ability of the polyurethane, the upper and lower ends of the polyurethane layer to have strength as a flooring material The double layer structure of the present invention relates to a waterproof layer structure and a multi-purpose waterproofing method in which the waterproof layer has a composite ability as waterproofing and flooring material.

In general, the flooring is composed of a primer layer (2) to form a top coat and a top coating layer (4) forming a top coat with a polyurethane layer (3) to form a middle, as shown in FIG.

The primer layer forming the lower layer is a layer for securing adhesion between the base (slab, 1) and the waterproof layer forming the middle,

The top coating layer forming the top coat is a layer for protecting the urethane layer forming a waterproof and intermediate from the natural environment such as ultraviolet rays,

The intermediate urethane layer is a layer that acts as a waterproof layer as a urethane layer having an elongation.

Polyurethane is used for the waterproof layer forming the middle of the flooring material as described above because of its excellent elongation, absorbing shock, and excellent adhesion to the upper and lower layers, so that peeling does not occur well, and its unique waterproofing ability is excellent. to be.

However, the polyurethane layer is made of a soft component, there is a problem in the physical properties such that the soft waterproof structure is destroyed by repeating the contraction and restoration by the continuous impact transmitted from the top.

In order to solve this problem, a construction method of strengthening the hardness of the flooring material has been attempted by double-layering a hard material having a separate strength on the polyurethane layer.

However, due to the heterogeneous component between the polyurethane layer on the bottom and the hard material on the top when using the hard material, structural durability problems such as the phenomenon of continuous impact from the top caused the phenomenon of lifting up at the interface between the hard material and the polyurethane waterproof layer during electrolyte. And there is a problem that the water resistance of the hard materials are not good, the floor construction by heterogeneous layer structure does not solve the problem of durability and waterproof at the same time.

An object of the present invention for solving the above problems is in the flooring layer structure having a polyurethane as a waterproof layer, the polyurethane layer constituting the waterproof layer composed of a plurality of layers, the upper layer is composed of a high hardness layer, the lower layer It is composed of a layer of low hardness so that the upper layer acts as a flooring material having wear resistance, and the lower layer acts as a waterproofing layer to secure the elongation rate, so that there is no heterogeneity between the flooring material and the waterproofing layer, and there is no cracking, lifting and peeling, and durability and waterproofness are achieved. It is to provide a waterproof layer structure using a double polyurethane layer having a composite.

In addition, another object of the present invention is a method for constructing a flooring layer having a polyurethane as a waterproof layer, comprising a plurality of layers of the polyurethane layer constituting the waterproof layer, the upper layer is composed of a high hardness layer, the lower layer is a low hardness The upper layer acts as a flooring material having wear resistance, and the lower layer acts as a waterproofing layer that secures elongation, so there is no heterogeneity between the flooring material and the waterproofing layer, and there is no cracking, lifting and peeling. It is to provide a multi-purpose waterproof method using a double polyurethane layer having.

The present invention to achieve the object as described above and to perform the problem for removing the conventional defects is a top coat and a polyurethane layer constituting the middle of the primer layer forming the bottom of the flooring material coated on the base (slab) forming the bottom of the structure In the flooring layer structure consisting of a top coating layer forming a,

The soft polyurethane layer of the lower part of which the main body and the hardener were formed by applying a ratio of 1: 2.5, and the main body and the hardening agent applied on the upper part of the intermediate polyurethane layer were formed by applying a ratio of 1: 2.5. It is achieved by providing a waterproof layer structure using a double polyurethane layer, characterized in that composed of a rigid polyurethane layer.

The soft polyurethane layer is characterized in that the layer is a hardness of 50 ~ 60A.

The hard polyurethane layer is characterized in that the hardness is 80A or more layers.

The soft polyurethane layer having the main ingredient and the curing agent in a ratio of 1: 2.5,

As a two-component waterproofing material, it was prepared using poly (1,2 -propylene glycol), Poly (1,2,3-propyleneglycol), 1,3 -Butylene glycol, 2,4-toluene diisocyanate, plasticizer and solvent. ;

Fillers and catalysts such as poly (1,2-propylene oxideglycol), poly (1,2-propylene oxideglycol), poly (1,2-propylene glycol), CaCO ₃ and Talc, dibutyltindiacetate and pigment chromium oxide green (Cr ₂ And a curing agent prepared by adding O ₃ ).

The soft polyurethane layer having the main ingredient and the curing agent in a ratio of 1: 2.5,

25-35wt% Poly (1,2-propylene glycol), 25-35wt% oly (1,2,3-propyleneglycol), 4-6wt% 1,3-Butylene glycol, 18-22wt% 2,4-toluene diisocyanate , Pre-polyurethane main body synthesized with 8-12wt% solvent (solvent prepared with Toluene: Methyl ethyl ketone: Ethyl acetate = 7: 1: 2), 3-5wt% DOP (DiOctylPhthalate); and

15-18wt% Poly (1,2-propylene oxideglycol), 2-5wt% Poly (1,2-propylene oxideglycol), 3-5wt% Poly (1,2-propylene glycol), 8-10wt% solvent (Toluene: Solvent prepared from MEK: EA = 7: 1: 2), 1-3wt% 4,4-methylene bis (2-chloroaniline): MOCA, 2-3wt% DOP, 50-60wt% 325mesh-CaCO ₃ , 3- 7 wt% Talc, 5-8 wt% chromium oxide green (Cr ₂ O ₃ ), 0.3-0.5 wt% Dibutyltindiacetate, a hardener synthesized as a main component;

The hard polyurethane layer wherein the main agent and the curing agent are formed in a ratio of 1: 2.5,

Bisphenol A and Eichlorohydrine are reacted under a base catalyst to obtain a high hardness and a substance with a hard molecular chain such as dipropylene glycol, 1,4-butane diol, 1,3-butylene glycol, and 2,4-toluene diisocyanate. Bisphenol A diglycidyl ether obtained by the addition of the prepared by using a small amount of a plasticizer and a solvent;

dipropylene glycol and poly propylene glycol, poly propylene glycol, fillers such as CaCO ₃ , Talc, chromium oxide green (Cr ₂ O ₃ ) as a pigment and a curing agent prepared by adding the catalyst Dibutyltindiacetate; It is done.

The hard polyurethane layer wherein the main agent and the curing agent are formed in a ratio of 1: 2.5,

25-30 wt% Dipropylene glycol, 25-30 wt% 1,4-butane diol, 3-6 wt% 1,3-butatylene glycol, 25-35 wt% 2,4-toluene diisocyanate, 3-8 wt% Bisphenol A diglycidyl ether, 8 A main component consisting of -12 wt% solvent (solvent composed of Toluene: MEK: EA = 70:10:20) and 1-2 wt% DOP (dioctylphthalate);

10-15 wt% dipropylene glycol, 5-8 wt% Poly propylene glycol, 5-8 wt% Poly propylene glycol, 3-5 wt% glycerol, 5-10 wt% solvent (consists of toluene: MEK: EA = 7: 1: 2), 2-7 wt% 4,4-methylene bis (2-chloroaniline): MOCA, 1-2 wt% DOP, 28-39 wt% CaCO ₃ , 21-25 wt% aluminum silicate (Al ₂ (SiO ₃ ) ₃ ), 3-7 wt % Talc, 5 to 8 wt% pigment (Cr ₂ O ₃ ), 0.3 to 0.5 wt% Dibutyltindiacetate, characterized in that consisting of a mixed stirring of the curing agent.

In addition, the composite waterproofing method of the present invention in the waterproofing method consisting of a bottom cleaning step, undercoat (primer) step, a middle coating step of forming a waterproof layer with polyurethane and a top coat (top coating) coating step,

The intermediate coating step of forming a waterproof layer with the polyurethane comprises a medium-lower coating step consisting of a soft polyurethane layer, and a medium-high coating step consisting of a hard polyurethane layer applied thereon,

The intermediate and intermediate coating step is configured to serve as a waterproof layer by securing the elongation rate by applying the main body and the curing agent to form a polyurethane after stirring,

The above-mentioned intermediate coating step is achieved by providing a multi-purpose waterproofing method using a double polyurethane layer, characterized in that the method is configured to serve as a flooring material by applying the stirring and curing agent to form a polyurethane to ensure abrasion resistance.

Soft polyurethane layer constituting the medium is a layer having a hardness of 50 ~ 60A,

The hard polyurethane layer constituting the above medium is characterized in that the hardness is 80A or more layers.

The intermediate and intermediate coating step is characterized in that the step of uniformly applying a squeegee or spray to a thickness of 1 ~ 2.5mm after stirring for 3 to 5 minutes using a main stirrer and a curing agent in a 1: 2.5 ratio using an electric stirrer.

The medium-resolution coating step is used by electrostatic stirring of the main agent and the curing agent in a 1: 2.5 ratio, and after stirring for 3 to 5 minutes, characterized in that the step of applying using a squeegee or spray to a thickness of 1 ~ 2.5mm.

The main polyurethane and the curing agent of the flexible polyurethane layer is mixed in a ratio of 1: 2.5,

The main component is a two-component waterproof material consisting of Poly (1,2 -propylene glycol), Poly (1,2,3-propyleneglycol), 1,3 -Butylene glycol, 2,4-toluene diisocyanate, a plasticizer and a solvent.

The hardener is poly (1,2-propylene oxideglycol), poly (1,2-propylene oxideglycol), poly (1,2-propylene glycol), CaCO ₃ and Talc, fillers and catalysts such as dibutyltindiacetate and pigment chromium oxide green ( Cr ₂ O ₃ ) is added to the composition.

The soft polyurethane layer is composed of 25 to 35 wt% poly (1,2 -propylene glycol), 25 to 35 wt% poly (1,2,3 -propylene glycol), 4 to 6 wt% 1,3-butylene glycol, 18 to 22 wt% 2,4-toluene diisocyanate, 8-12 wt% solvent (solvent prepared with Toluene: Methyl ethyl ketone: Ethyl acetate = 7: 1: 2), 3-5 wt% DOP (DiOctylPhthalate) ,

Curing agents include 15-18 wt% Poly (1,2-propylene oxideglycol), 2-5wt% Poly (1,2-propylene oxideglycol), 3-5wt% Poly (1,2-propylene glycol), 8-10wt% solvent ( Solvent prepared from Toluene: MEK: EA = 7: 1: 2), 1-3wt% 4,4-methylene bis (2-chloroaniline): MOCA, 2-3wt% DOP, 50-60wt% 325mesh-CaCO ₃ , 3-7wt% Talc, 5-8wt% Chromium Oxide Green (Cr ₂ O ₃ ), 0.3 ~ 0.5wt% Dibutyltindiacetate, characterized in that the multi-purpose waterproof method using a double polyurethane layer.

The main hardener of the hard polyurethane layer and the curing agent are mixed in a ratio of 1: 2.5,

The main topic is bisphenol A and Eichlorohydrine as base catalysts to obtain high hardness and materials with hard segment with short molecular weight chains such as dipropylene glycol, 1,4-butane diol, 1,3-butylene glycol and 2,4-toluene diisocyanate. Bisphenol A diglycidyl ether obtained by the reaction under the addition of a small amount of plasticizer and a solvent,

The curing agent is characterized by the addition of fillers such as dipropylene glycol and poly propylene glycol, poly propylene glycol, CaCO ₃ and Talc, chromium oxide green (Cr ₂ O ₃ ) as a pigment, and a dibutyltindiacetate catalyst.

The hard polyurethane layer is composed of 25 to 30 wt% dipropylene glycol, 25 to 30 wt% 1,4-butane diol, 3 to 6 wt% 1,3-butatylene glycol, 25 to 35 wt% 2,4-toluene diisocyanate, 3 8 wt% Bisphenol A diglycidyl ether, 8-12 wt% solvent (solvent composed of Toluene: MEK: EA = 70: 10: 20), prepolyurethane composed of 1-2 wt% DOP (dioctylphthalate),

Curing agent consists of 10-15wt% dipropylene glycol, 5-8wt% Poly propylene glycol, 5-8wt% Poly propylene glycol, 3-5wt% glycerol, 5-10wt% solvent (toluene: MEK: EA = 7: 1: 2 ), 2-7 wt% 4,4-methylene bis (2-chloroaniline): MOCA, 1-2 wt% DOP, 28-39 wt% CaCO ₃ , 21-25 wt% aluminum silicate (Al ₂ (SiO ₃ ) ₃ ), 3 It is characterized in that the composition is composed of -7wt% Talc, 5-8wt% pigment (Cr ₂ O ₃ ), 0.3-0.5wt% Dibutyltindiacetate.

The present invention consists of a polyurethane layer constituting the floor covering layer having a double layer, the lower layer is responsible for the waterproofing performance as a waterproof layer, the upper layer can be solved at the same time by harmonizing with each other to act as a flooring material. To the advantage of

In addition, there is not much heterogeneity between the hard polyurethane flooring material and the soft polyurethane waterproofing layer constituting the upper layer and the lower layer, and it has a combination of durability and waterproofness without cracking, lifting and peeling.

In addition, the construction cost is also possible by constructing the waterproof layer and the bottom layer at the same time.

In addition, aluminum silicate is added to the hard polyurethane layer, which is more abrasion resistant than conventional hard polyurethane, and is more resistant to impact due to the elasticity of the soft polyurethane layer present in the lower layer than the epoxy flooring, which is mainly used as a conventional flooring agent. It is a useful invention having the advantage of being an invention that is expected to be greatly used in industry.

Hereinafter, the configuration and the operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when 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.

Figure 1 shows a schematic view showing the layer configuration of the flooring having a multi-layered polyurethane layer structure according to the present invention, as shown, the flooring configuration of the present invention forms a midway with the primer layer (2) as a base It consists of a top coating layer 4 which forms a top coat with a double polyurethane layer composed of a soft polyurethane layer 3a and a hard polyurethane layer 3b.

The primer layer forming the lower layer is a layer for securing adhesion between the base (slab, 1) and the waterproof layer forming the middle, and the top coating layer forming the upper layer is for protecting the urethane layer forming a waterproof and middle layer from a natural environment such as ultraviolet rays. Layer.

The soft polyurethane layer constituting the middle and middle layers of the present invention is a layer having a hardness of 50 to 60A, and is configured to act as a waterproof layer by securing a stretch ratio as a layer applied after stirring a main material and a curing agent.

In addition, the highly rigid polyurethane layer constituting the middle layer is a layer of 80A or more and is a layer applied after stirring the main material and the curing agent is configured to act as a flooring material to secure wear resistance and the like.

In the above, the hardness is Shore A hardness and the unit is A.

Hereinafter, the polyurethane layer of the present invention will be described in more detail.

The soft polyurethane layer constituting the middle and lower layers acting as a waterproof layer is a two-component waterproof material Poly (1,2-propylene glycol): (molecular weight 2000, hereinafter PPG-2000) and Poly (1,2,3-propyleneglycol) (Molecular weight 3000, hereinafter GP-3000), 1,3-Butylene glycol, 2,4-toluene diisocyanate and the like prepared by using a plasticizer and a solvent; and

Poly (1,2-propylene oxideglycol): (molecular weight 2000, hereinafter PP-2000), Poly (1,2-propylene oxideglycol): (molecular weight 3000, hereinafter PP-3000), Poly (1,2-propylene glycol): The main raw material (GP-4000 with molecular weight of 4000 or less) is a hardener prepared by adding fillers such as CaCO ₃ and Talc, Dibutyltindiacetate, a catalyst, and other pigment-chromium oxide green (Cr ₂ O ₃ ). As a soft polyurethane coating waterproofing material to be blended at the ratio of, it has excellent characteristics such as abrasion resistance, impact resistance, weather resistance, chemical resistance, aging resistance, crack resistance and mechanical properties.

The fillers CaCO ₃ and Talc are both used as fillers, but there is no change in the numerical value or the use of either of the two materials. However, there is a difference in specific gravity, so the more CaCO ₃ is used, the higher the specific gravity and the lower the price. In the present invention, 325mesh-CaCO ₃ , 3-7wt% Talc is mainly used.

More specifically, the flexible polyurethane layer is the main component of the main material 25-35wt% PPG-2000, 25-35wt% GP-3000, 4-6wt% 1,3-Butylene glycol, 18-22wt% 2,4 a pre-polyurethane base composed mainly of -toluene diisocyanate, 8-12wt% solvent (solvent prepared with Toluene: Methyl ethyl ketone: Ethyl acetate = 7: 1: 2), 3-5wt% DOP (DiOctylPhthalate); and

15-18 wt% PP-2000, 2-5 wt% PP-3000, 3-5 wt% GP-4000, 8-10 wt% solvent (solvent prepared with Toluene: MEK: EA = 7: 1: 2), 1-3 wt % 4,4-methylene bis (2-chloroaniline): MOCA, 2-3 wt% DOP, 50-60 wt% 325mesh-CaCO ₃ , 3-7 wt% Talc, 5-8 wt% chromium oxide green (Cr ₂ O ₃ ), The coating film is formed by mixing and stirring 0.3-0.5wt% Dibutyltindiacetate as a main component, and it is characterized in that the composition by mixing in a weight ratio of 1: 2.5 ratio of the curing agent.

The reason for mixing at the weight ratio of 1: 2.5 of the ratio of the main agent to the curing agent is that the ratio of the equivalent of the polyisol of the isocyanate component of the main agent to the curing agent is prepared in a ratio of 1: 2.5. If this is not the case, the unreacted monomer will remain.

The reason for limiting each component's value as listed above is

First of all, the reason for limiting the numerical values of PPG-2000 and GP-3000 as the main ingredient was limited to obtain a polymer chain having a certain molecular weight or more. The longer the chain, the higher the molecular weight, the higher the viscosity, and the poorer the performance.

1,3-butadiene glycol also limited the value for the same reason,

The reason for limiting the amount of 2,4-toluene diisocyanate as described above is that when used less than this, the equivalent ratio with the polyol component does not match and the excess -OH group is present, resulting in the sticky state of the coating itself. If more than this, an extra -NCO group is formed, which increases the hardness of the coating and increases the cost.

The mixed solvent of toluene was used as a solvent, DOP (DiOctylPhthalate) was used as a plasticizer, and when used less, it lowered the elongation performance of the coating film, and when used more than this, the physical properties such as tensile strength and tear strength decreased. It becomes a factor of cost increase.

The reason for numerical limitation of each component of the curing agent is

The reason for limiting the values of PP-2000, PP-3000, and GP-4000 was limited to obtain a polymer chain of a certain molecular weight or more. When using less than this, the molecular weight is small, so the physical properties are not good. The longer the chain, the higher the molecular weight, the higher the viscosity, and the poorer the performance.

Toluene mixed solvent was used as a solvent, and 4,4-methylene bis (2-chloroaniline): MOCA is a hardening component that reacts with 2,4-toluene diisocyanate to cause hardening. The faster the curing speed, the lower the work performance, and when used less than this, the hardness of the coating film is lowered to obtain the desired hardness, the curing speed of the coating film is slowed, the working time is increased.

CaCO ₃ and Talc are fillers, which can be a factor in the cost of the product when used less, and when used a lot, the general tensile strength, tear strength, and elongation performance of the coating can be reduced.

Cr ₂ O ₃ was used as the pigment, but the color of the coating film may not be clear depending on the amount of the pigment used.

In addition, the highly rigid polyurethane layer forming the middle layer of the present invention has a high molecular weight chain such as dipropylene glycol, 1,4-butane diol, 1,3-butylene glycol, and 2,4-toluene diisocyanate, and thus has a high content with hard segments. To obtain hardness, Bisphenol A diglycidyl ether obtained by reacting Bisphenol A and Eichlorohydrine under a base catalyst was added, and a subject prepared using a small amount of a plasticizer and a solvent;

Dipropylene glycol, Poly propylene glycol: (molecular weight 2000), Poly propylene glycol: (molecular weight 3000) as main raw materials, fillers such as CaCO ₃ and Talc, chromium oxide green (Cr ₂ O ₃ ), etc. The coating film is formed by mixing and stirring a hardening agent prepared by adding a main agent, characterized in that the composition by mixing in a weight ratio of 1: 1: 2.5 ratio of the curing agent.

More specifically, the main component of the hard polyurethane layer is 25 to 30 wt% dipropylene glycol, 25 to 30 wt% 1,4-butane diol, 3 to 6 wt% 1,3-butatylene glycol, 25 to 35 wt% 2,4-toluene diisocyanate, 3-8 wt% Bisphenol A diglycidyl ether, 8-12 wt% solvent (solvent consisting of Toluene: MEK: EA = 70: 10: 20), 1-2 wt% DOP (dioctylphthalate) With the subject;

10-15 wt% dipropylene glycol, 5-8 wt% Poly propylene glycol (molecular weight: 2000), 5-8 wt% Poly propylene glycol (molecular weight: 3000), 3-5 wt% glycerol, 5-10 wt% solvent (toluene: MEK: EA = 7: 1: 2), 2-7 wt% 4,4-methylene bis (2-chloroaniline): MOCA, 1-2 wt% DOP, 28-39 wt% CaCO ₃ , 21-25 wt% aluminum silicate (Al ₂ (SiO ₃ ) ₃ ), ₃ to ₇ wt% Talc, 5 to 8 wt% pigment (Cr ₂ O ₃ ), and 0.3 to 0.5 wt% Dibutyltindiacetate.

The reason for mixing the weight ratio of the main agent to the curing agent in a ratio of 1: 2.5 is because the ratio of the equivalent weight of the main isocyanate component and the polyol of the curing agent is 1: 2.5. If this is not the case, the unreacted monomer will remain.

The reason for limiting the value of each component as listed above is

First, dipropylene glycol, 1,4-butane diol, and 1,3-butylene glycol of the main components were used as chain extenders of polyurethane, and the reason for limiting the numerical value was limited to obtain a polymer chain having a certain molecular weight or more. The molecular weight is small and basically poor physical properties, when used more than this, the polymer chain is long, the molecular weight is high, the viscosity is high, the work performance is not good.

The reason for limiting the amount of 2,4-toluene diisocyanate as described above is that when 2,4-toluene diisocyanate is used as a hard segment of polyurethane, the coating film becomes flexible and the hardness decreases, and the equivalence ratio with the polyol component does not match. The presence of the extra -OH group causes the coating itself to be sticky. If more than this, an extra -NCO group is formed, so that the hardness of the coating becomes too high, and thus the tensile performance is reduced, resulting in a cost increase.

Toluene's mixed solvent was used as a solvent.

Bisphenol A diglycidyl ether is an epoxy used for the purpose of increasing the hardness of urethane coating waterproofing materials.If the amount is small, the hardness rises insignificantly, and if the amount is large, the coating becomes too hard, and the tensile strength, tear strength, and elongation performance Your back will fall.

DOP (DiOctylPhthalate) is used as a plasticizer, and using less than this reduces the elongation performance of the coating film. When used more than this, the property of tensile strength, tear strength, etc. is degraded, and the cost increases.

The reason for numerical limitation of each component of hardener is

The reason for limiting the values of dipropylene glycol, poly propylene glycol (molecular weight: 2000), and poly propylene glycol (molecular weight: 3000) was limited to obtain a polymer chain of a certain molecular weight or more. It is not good, and when used more than this, polymer chain becomes long, molecular weight becomes high, a viscosity becomes high, and work performance becomes bad.

Toluene's mixed solvent was used as a solvent.

4,4-methylene bis (2-chloroaniline): MOCA is a hardening component that reacts with 2,4-toluene diisocyanate and Bisphenol A diglycidyl ether to cause hardening. When used more than this, the hardness of the coating increases and the curing speed of the coating increases. The faster the work performance, the lower the performance, and if the use is less than this, the hardness of the coating film is lowered to obtain the desired hardness, the curing speed of the coating film is slowed, the working time is increased.

Glycerol is used as a self-skinning agent and has a semi-rigid property, which increases the hardness of the coating film.

DOP has been used as a plasticizer. When the amount is high, the coating film is plasticized, so that the desired hardness cannot be obtained, and when used less, the basic properties of the coating film may be degraded.

CaCO ₃ and Talc are fillers, which can be a factor in the cost of the product when used less, and when used a lot, the general tensile strength, tear strength and elongation performance of the coating film can be reduced.

Aluminum silicate (Al ₂ (SiO ₃ ) ₃ ) is used as a filler and is a more expensive material than CaCO ₃ , but it has a superior effect on wear resistance. No noticeable increase in wear resistance.

Cr ₂ O _{3 was} used as _a pigment, but the color of the coating may not be clear depending on the amount of the pigment used.

Dibutyltindiacetate was used as a catalyst, and if it is less than that, the role as a catalyst is not properly performed, and even if it is used a lot, the effect does not increase greatly, resulting in a cost increase effect.

Referring to the construction method of the present invention as described above are as follows.

1. The lower limb cleaning stage

 ① The base surface should be sufficiently cured and dried, and the base surface should be dried so that the moisture content is less than 10% to allow the primer to penetrate well.

 ② Grind the projected parts smoothly and adjust the recessed parts with urethane vertical material.

 ③ If impurities and organics get on the surface, wipe them off with thornene or toluene.

2. Undercoat (primer) application step

① Apply 0.2 ~ 0.3kg / ㎡ on the base surface twice using roller or spray evenly to improve adhesion to the lower extremity.

(Twice the reason for applying twice (previous one time): Applying evenly and without any missing parts to ensure high adhesion between the lower and middle layers ⇒ Lifting the waterproof layer and suppressing air pocket generation)

② Drying time after primer application is 3 ~ 4 hours in summer and 5 ~ 7 hours in winter.

3. Medium degree coating step (soft polyurethane layer forming step)

① The polyurethane hardness 50A ~ 60A and the main body and the curing agent are uniformly applied by squeegee or spray to 1 ~ 2.5mm thickness with sufficient agitation for 3 to 5 minutes using an electric stirrer in a 1: 2.5 ratio. At this time, the reason why the coating is 1 ~ 2.5mm thick is that the waterproof layer is insufficient when the thickness is 1mm or less, and when the thickness is over 2.5mm, cracks of the upper and middle layer are generated.

② The pot life of the material is within 30 minutes after stirring the main material and the curing agent.

4. Middle top coating step (high rigid polyurethane layer forming step)

① After applying the middle and middle coats, the middle and middle coats should be applied within 2 ~ 3 days in the summer season and within 3 ~ 4 days in the winter season to ensure high adhesive strength between the middle and the middle coat.

② Polyurethane Hardness 80A or more, main body, and curing agent are used by electric stirring at a ratio of 1: 2.5, and sufficient stirring is applied for 3 ~ 5 minutes to apply 1 ~ 2.5mm thickness using squeegee or spray. At this time, the reason why the thickness is applied to the thickness of 1 ~ 2.5mm is because it is insufficient as a flooring material when 1mm or less, and when it exceeds 2.5mm, it is uneconomical compared to quality improvement.

③ The pot life of the material should be within 30 minutes after stirring the main material and the curing agent.

5. Top coat coating step

① Top coat is applied evenly with roller and spray by 0.2kg / ㎡.

② Apply top coat within 1 ~ 4 days after application of middle coat. The reason for limiting the construction date here is that there is a possibility of poor curing of the longitudinal phase when less than 1 day, and more than 4 days, there is a possibility of poor adhesion between the middle and the middle phase due to foreign substances such as dust.

6. Others

① Stop construction when the outside air temperature is below 0 ℃. This is because the smooth construction is difficult because the reaction time of the subject matter and the curing agent is lower than 0 ° C. The conventional usual was 5 degreeC.

② Be careful of fire and poisoning when using in a closed place.

③ When storing materials, care should be taken to avoid contact with moisture in the atmosphere and to prevent damage to containers.

The effect of the construction using the construction method as described above has an excellent advantage in terms of wear resistance, compared to the waterproof layer of a single polyurethane layer.

The following is a conventional single layer polyurethane according to the present invention and the experimental result table according to the present invention.

The results of the wheel load resistance test (KS F 4937 wear resistance measurement) are shown in Table 1 below.

Table 1

General Urethane Flooring Experiment Inventive Flooring Experiment Thickness reducing depth 2.92mm 2.37mm Characteristic Bottom not visible Bottom not visible

In addition, the effect of the construction using the present invention construction method has an excellent advantage in terms of impact resistance, compared to the waterproof layer made of a single layer of epoxy flooring mainly used as a general floor material.

The results of the impact resistance test (KS F 2221) are shown in Table 2 below.

Table 2

Epoxy Flooring Experiment Inventive Flooring Experiment Perforation clear clear crack Slight cracking clear Ripples clear clear

Due to the elasticity of the flexible urethane waterproofing layer, the coating method exhibits superior characteristics in terms of impact resistance compared to epoxy flooring, which is generally constructed, and is also excellent in wear resistance, compared to general urethane flooring.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a schematic view showing a layer configuration of a flooring material having a polyurethane layer structure of a multilayer structure according to the present invention,

Figure 2 is a schematic diagram showing the layer configuration of a flooring material having a conventional general polyurethane layer.

<Description of the symbols for the main parts of the drawings>

(1): ground (slab)

(2): primer layer

(3): polyurethane layer

(4): top coating layer

(3a): soft polyurethane layer

(3b): hard polyurethane layer

Claims (15)

In the flooring layer structure consisting of a primer layer forming the bottom coat of the flooring material coated on the base (slab) forming the bottom of the structure and a top coating layer forming a top coat with a polyurethane layer forming a middle, The polyurethane layer forming the intermediate layer is coated with a lower soft polyurethane layer coated with a main composition and a curing agent in a ratio of 1: 2.5, and a main composition and a curing agent applied thereon in a ratio of 1: 2.5, The soft polyurethane layer having the main ingredient and the curing agent in a ratio of 1: 2.5, As a two-component waterproofing material, it was prepared using poly (1,2 -propylene glycol), Poly (1,2,3-propyleneglycol), 1,3 -Butylene glycol, 2,4-toluene diisocyanate, plasticizer and solvent. ; Fillers and catalysts such as poly (1,2-propylene oxideglycol), poly (1,2-propylene oxideglycol), poly (1,2-propylene glycol), CaCO ₃ and Talc, dibutyltindiacetate and pigment chromium oxide green (Cr ₂ A curing agent prepared by adding O ₃ ); The hard polyurethane layer wherein the main agent and the curing agent are formed in a ratio of 1: 2.5, Bisphenol A and Eichlorohydrine are reacted under a base catalyst to obtain a high hardness and a substance with a hard molecular chain such as dipropylene glycol, 1,4-butane diol, 1,3-butylene glycol, and 2,4-toluene diisocyanate. Bisphenol A diglycidyl ether obtained by the addition of the prepared by using a small amount of a plasticizer and a solvent; dipropylene glycol, poly propylene glycol, poly propylene glycol, fillers such as CaCO ₃ and Talc, chromium oxide green (Cr ₂ O ₃ ) as a pigment and a curing agent prepared by adding the catalyst Dibutyltindiacetate; Waterproof layer structure using double polyurethane layer. The method of claim 1, The soft polyurethane layer is a waterproof layer structure using a double polyurethane layer, characterized in that the layer of hardness 50 ~ 60A. The method of claim 1, The hard polyurethane layer is a waterproof layer structure using a double polyurethane layer, characterized in that the layer is a hardness of 80A or more. delete The method of claim 1, The soft polyurethane layer having the main ingredient and the curing agent in a ratio of 1: 2.5, 25-35wt% Poly (1,2 -propylene glycol), 25-35wt% poly (1,2,3-propyleneglycol), 4-6wt% 1,3-Butylene glycol, 18-22wt% 2,4-toluene diisocyanate , Pre-polyurethane main body synthesized with 8-12wt% solvent (solvent prepared with Toluene: Methyl ethyl ketone: Ethyl acetate = 7: 1: 2), 3-5wt% DOP (DiOctylPhthalate); and 15-18wt% Poly (1,2-propylene oxideglycol), 2-5wt% Poly (1,2-propylene oxideglycol), 3-5wt% Poly (1,2-propylene glycol), 8-10wt% solvent (Toluene: Solvent prepared from MEK: EA = 7: 1: 2), 1-3wt% 4,4-methylene bis (2-chloroaniline): MOCA, 2-3wt% DOP, 50-60wt% 325mesh-CaCO ₃ , 3- 7wt% Talc, 5-8wt% chromium oxide green (Cr ₂ O ₃ ), 0.3 ~ 0.5wt% Dibutyltindiacetate a curing agent synthesized as a main component; a waterproof layer structure using a double polyurethane layer, characterized in that the mixture. delete The method of claim 1, The hard polyurethane layer wherein the main agent and the curing agent are formed in a ratio of 1: 2.5, 25-30 wt% Dipropylene glycol, 25-30 wt% 1,4-butane diol, 3-6 wt% 1,3-butatylene glycol, 25-35 wt% 2,4-toluene diisocyanate, 3-8 wt% Bisphenol A diglycidyl ether, 8 A main component consisting of -12 wt% solvent (solvent composed of Toluene: MEK: EA = 70:10:20) and 1-2 wt% DOP (dioctylphthalate); 10-15 wt% dipropylene glycol, 5-8 wt% Poly propylene glycol, 5-8 wt% Poly propylene glycol, 3-5 wt% glycerol, 5-10 wt% solvent (consists of toluene: MEK: EA = 7: 1: 2), 2-7 wt% 4,4-methylene bis (2-chloroaniline): MOCA, 1-2 wt% DOP, 28-39 wt% CaCO ₃ , 21-25 wt% aluminum silicate (Al ₂ (SiO ₃ ) ₃ ), 3-7 wt A water-proof layer structure using a double polyurethane layer, characterized in that it consists of mixed stirring of a curing agent composed of% Talc, 5 to 8 wt% pigment (Cr ₂ O ₃ ), 0.3 to 0.5 wt% Dibutyltindiacetate. In the waterproofing method consisting of the bottom cleaning step, the primer coating (primer) step, the intermediate coating step of forming a waterproof layer with polyurethane and the top coat (top coating) coating step, The intermediate coating step of forming a waterproof layer with the polyurethane comprises a medium-lower coating step consisting of a soft polyurethane layer, and a medium-high coating step consisting of a hard polyurethane layer applied thereon, The intermediate and intermediate coating step is configured to serve as a waterproof layer by securing the elongation rate by applying the main body and the curing agent to form a polyurethane after stirring, The above-mentioned intermediate coating step is configured to serve as a flooring material to secure the wear resistance by applying the main body and the curing agent to form a polyurethane after stirring, In the medium and intermediate coating step, the main agent and the curing agent are mixed at a ratio of 1: 2.5, The main component is a two-component waterproof material consisting of Poly (1,2 -propylene glycol), Poly (1,2,3-propyleneglycol), 1,3 -Butylene glycol, 2,4-toluene diisocyanate, a plasticizer and a solvent. The hardener is poly (1,2-propylene oxideglycol), poly (1,2-propylene oxideglycol), poly (1,2-propylene glycol), CaCO ₃ and Talc, fillers and catalysts such as dibutyltindiacetate and pigment chromium oxide green ( By adding Cr ₂ O ₃ ), In the intermediate coating step, the main agent and the curing agent are mixed at a ratio of 1: 2.5, The main topic is bisphenol A and Eichlorohydrine as base catalysts to obtain high hardness and materials with hard segment with short molecular weight chains such as dipropylene glycol, 1,4-butane diol, 1,3-butylene glycol and 2,4-toluene diisocyanate. Bisphenol A diglycidyl ether obtained by the reaction under the addition of a small amount of plasticizer and a solvent, The curing agent is formed by adding dipropylene glycol, poly propylene glycol, poly propylene glycol, fillers such as CaCO ₃ and Talc, chromium oxide green (Cr ₂ O ₃ ) as a pigment, and dibutyltindiacetate as a catalyst. Multipurpose waterproofing method using polyurethane layer. The method of claim 8, Soft polyurethane layer constituting the medium is a layer having a hardness of 50 ~ 60A, The high-durability polyurethane layer forming the mid-high degree is a multi-purpose waterproof method using a double polyurethane layer, characterized in that the layer is a hardness of 80A or more. The method of claim 8, The intermediate and intermediate coating step is a double polyurethane layer, characterized in that the step of uniformly applying a squeegee or spray to a thickness of 1 ~ 2.5mm after stirring for 3 to 5 minutes using a main stirrer and a curing agent in a 1: 2.5 ratio using an electric stirrer Multipurpose waterproofing method using. The method of claim 8, The intermediate coating step is a dual polyurethane, characterized in that the step of using the electrostatic stirring of the main material and the curing agent in a ratio of 1: 2.5, and after stirring for 3 to 5 minutes, using a squeegee or spray to a thickness of 1 ~ 2.5mm Multi-purpose waterproofing method using layers. delete The method of claim 8, The subject of the intermediate coating step is 25-35wt% Poly (1,2 -propylene glycol), 25-35wt% poly (1,2,3-propyleneglycol), 4-6wt% 1,3-Butylene glycol, 18- 22 wt% 2,4-toluene diisocyanate, 8-12 wt% solvent (solvent prepared with Toluene: Methyl ethyl ketone: Ethyl acetate = 7: 1: 2), 3-5 wt% DOP (DiOctylPhthalate) , Curing agents include 15-18 wt% Poly (1,2-propylene oxideglycol), 2-5wt% Poly (1,2-propylene oxideglycol), 3-5wt% Poly (1,2-propylene glycol), 8-10wt% solvent ( Solvent prepared from Toluene: MEK: EA = 7: 1: 2), 1-3wt% 4,4-methylene bis (2-chloroaniline): MOCA, 2-3wt% DOP, 50-60wt% 325mesh-CaCO ₃ , 3-7wt% Talc, 5-8wt% Chromium Oxide Green (Cr ₂ O ₃ ), 0.3 ~ 0.5wt% Dibutyltindiacetate, characterized in that the multi-purpose waterproof method using a double polyurethane layer. delete The method of claim 8, The subject of the above-mentioned intermediate coating step is 25 to 30 wt% Dipropylene glycol, 25 to 30 wt% 1,4-butane diol, 3 to 6 wt% 1,3-butatylene glycol, 25 to 35 wt% 2,4-toluene diisocyanate, 3 to 8wt% Bisphenol A diglycidyl ether, 8-12wt% solvent (solvent composed of Toluene: MEK: EA = 70: 10: 20), prepolyurethane composed of 1-2wt% DOP (dioctylphthalate), Curing agent consists of 10-15wt% dipropylene glycol, 5-8wt% Poly propylene glycol, 5-8wt% Poly propylene glycol, 3-5wt% glycerol, 5-10wt% solvent (toluene: MEK: EA = 7: 1: 2 ), 2-7 wt% 4,4-methylene bis (2-chloroaniline): MOCA, 1-2 wt% DOP, 28-39 wt% CaCO ₃ , 21-25 wt% aluminum silicate (Al ₂ (SiO ₃ ) ₃ ), 3 Multi-purpose waterproofing method using a double polyurethane layer, characterized in that composed of ~ 7wt% Talc, 5-8wt% pigment (Cr ₂ O ₃ ), 0.3 ~ 0.5wt% Dibutyltindiacetate.

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