KR101103930B1 - Fluorine modified tarurethane waterproofing material and manufacturing method thereof, construction method for waterproofing using fluorine modified tarurethane waterproofing material - Google Patents

Abstract

PURPOSE: A fluorine modified taurethane waterproofing material is provided to have excellent adhesive force and crack resistance with maintaining profitability by using 2,2,4-trimethyl-1,6-hexamethylene diisocyanate tar and polyethylene chip. CONSTITUTION: A manufacturing method of a fluorine modified taurethane waterproofing material is comprises: a step of manufacturing fluorine-modified tar urethane by mixing 2,2,4-trimethyl-1,6-hexamethylene diisocyanate, hexamethylene diisocyanate terminated polyurethane prepolymer, 2-(perfluorooctyl)ethanol, 2- perfluorodecyl ethanol, 2,2-bis(4-hydroxyphenyl)hexafluoropropane and tar; and a step of manufacturing the fluorine modified taurethane waterproofing material by mixing the fluorine-modified tar urethane, polyethylene chips, polyoxyethylene ethylether monooleate hydrocarbon and polyoxyethylene alkyl ether succinic, and dispersing uniformly.

Description

Fluorine modified tarurethane waterproofing material and manufacturing method according, construction method for waterproofing using fluorine modified tarurethane waterproofing material}

The present invention relates to a fluorine-modified tar urethane coating waterproofing material and a method of manufacturing the same, and a waterproofing method using the fluorine-modified tarethane coating waterproofing material. The present invention relates to a method of constructing in close contact with the developed fluorine-modified tar urethane coating waterproofing material, and to a method of producing the fluorine-modified tar urethane used therein.

Polyurethane materials for civil and building use were introduced in the early 1980s. Polyurethane material is capable of seamless construction, which is a characteristic of the material itself, and chemical properties such as construction properties, adhesion to a small surface, chemical resistance, durability, and sound absorption, and dimensional stability, which are well conformed to complex structures. Due to its great physical properties, especially its excellent elongation, it has excellent trackability against cracking under the ground, increasing the demand for waterproofing the interior, exterior walls and floors of buildings.

However, at present, polyurethane materials having such excellent characteristics for construction are produced by isocyanate prepolymer and polyol mixture in the production plant, and they must be constructed through several steps of weighing, blending, stirring, and construction according to the mixing ratio determined at the construction site. Since defects in the tops are likely to occur and skilled professionals are required, it is a cause of increase in labor costs, which in turn increases the construction cost and reduces the construction efficiency.

In general, two-component polyurethane materials have to use all of the waterproofing material that is stirred within a limited time, so the time interval between stirring and construction must be well controlled, and the amount of material loss is increased when this time is not correct.

Therefore, in order to maintain the excellent physical and chemical properties of these polyurethane materials and to compensate for the shortcomings as a two-component type, one-component formulation of polyurethane building materials has been studied. For example, a method of synthesizing an isocyanate prepolymer having a content of 1% to 5% by weight of isocyanate (NCO) and adding a filler, a stabilizer, a colorant, and the like is used to form a one-component polyurethane material.

However, this method has a disadvantage in that the curing time is slow at room temperature and only a little moisture is present, and storage stability is deteriorated, and swelling defects of the coating film are easily generated by carbon dioxide generated by the reaction of water and isocyanate.

To compensate for this disadvantage, Japanese Patent Publication No. 5-75035 discloses a method of improving storage stability and curing rate by using a catalyst of morpholino diethyl ether.

However, this method did not solve the occurrence of defects caused by swelling of the coating film caused by carbon dioxide.

Therefore, in order to solve this problem, US Patent No. 4720535 or Japanese Patent Laid-Open Publication No. 4-226522 discloses a method using a seed base which is a latent curing agent. In other words, aldehyde is reacted with primary di or tri amine to make poly aldimine, which is mixed with an isocyanate prepolymer and used as a one-component material.

However, when the poly-aldimine is mixed with an isocyanate and used as a one-component urethane material, the reactivity is fast in a high temperature and high humidity environment. That is, the hardening of the surface and the bottom of the coating proceeds easily, but the inside of the coating is difficult to penetrate moisture from the hardened coating surface, so that the curing progress is slow and swelling defects are frequently caused by aldehydes dissociated during curing.

Another method using latent curing agents is described in British Patent No. 1575666, which reacts a ketone or an aldehyde with a secondary amine to form a polyenamine, which is then mixed with an isocyanate prepolymer to form one part.

In this case, however, the isocyanate of the prepolymer must be masked or an isocyanate having a very low reactivity should be used, and it is difficult to use as a building material because of low storage stability.

In addition, in Korean Patent 10-0192201, aldimine and ketamine are simultaneously present in the latent curing agent chain to control the curing rate, so that the defect rate is low and the construction is possible under adverse environmental conditions such as high temperature and high humidity in summer. The same problem is involved. In addition, Korean Patent No. 10-0884015 discloses an exposed composite waterproof structure composed of an adhesive layer-> aeration layer embossed polyvinyl chloride sheet layer-> urethane waterproof layer-> top coat layer. When the sheet layer is formed, the solvent contained in the polyurethane is gradually absorbed by the polyvinyl chloride sheet layer, causing the sheet to shrink. Also, since the embossed surface of the embossed sheet is located at the bottom, it acts as a water passage. If a leak occurs, the front of the construction has a problem that needs to be rolled out.

As a technique for solving the above problems, there is a Korean Patent No. 10-0988201, which is the applicant's prior application, which is a cyclohexyl diisocyanate-terminated polyurethane prepolymer 57.1 ~ 75.0wt%, 2- (purple) Loroctyl) ethanol 7.4 ~ 14.4wt%, 2- (perfluorodecyl) ethanol 7.4 ~ 14.4wt% and 2,2-bis (4-hydroxyphenyl) hexafluoropropane 10.0 ~ 14.3wt% To prepare a fluorine-modified polyurethane, to 70.9 to 88.7 wt% of the fluorine-modified polyurethane, 0.3 to 1.1 wt% of polyoxyethylene ethyl monooleate hydrocarbon, 0.3 to 1.1 wt% of polyoxyethylene alkyl etherusic and It is provided with a fluorine-modified polyurethane coating waterproofing material prepared by mixing and dispersing talc 8.8 ~ 23.7wt% uniformly, and has the advantage of good construction safety of the multi-stage waterproof layer and very strong on the external wound.

However, in spite of the excellent physical properties described above, there are still disadvantages in that the manufacturing cost is not low enough to satisfy and the crack resistance is reduced.

An object of the present invention for solving the above problems is economical by using 2,2,4-trimethyl-1,6-hexamethylene diisocyanate, tar and polyethylene chips, fluorine excellent adhesion strength and crack tracking resistance A modified tar urethane coating waterproofing material, a method of manufacturing the same, and a waterproof construction method by the non-exposed front contact method using the same.

2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer 35.3 ~ 40.1wt%, 2- (Perfluorooctyl) ethanol 5.5-6.4 wt%, 2- (perfluorodecyl) ethanol 15.5-17.8 wt% and 2,2-bis (4-hydroxyphenyl) hexafluoropropane and 16.3-19.8 wt% Preparing a fluorine-modified tar urethane by mixing 21.8 to 27.3 wt% tar;

Fluorine-modified tar urethane prepared according to the above step 55.7 ~ 65.7wt%, polyethylene chip 33.0 ~ 43.6wt%, polyoxyethylene ethyl thermomonohydrohydrocarbon 0.3 ~ 1.1wt% and polyoxyethylene alkyl thermoseptic 0.3 It is achieved by providing a method for producing a fluorine-modified tar urethane coating waterproofing material, characterized in that it comprises a step of mixing ~ ~ 1.1 wt% to uniformly disperse.

According to a preferred embodiment of the present invention, the fluorine-modified tar urethane production step is characterized in that for producing a fluorine-modified tar urethane of 95% solids by reacting the mixed composition of the raw material for 3 to 4 hours at 50 ~ 60 ℃.

In a preferred embodiment, the 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer has an isocyanate (NCO) INDEX of 2.0 to 2.8 and a theoretical isocyanate (NCO) wt% of 14 to It is characterized by using a weight average molecular weight manufactured in the range of 15 000 ~ 60000.

According to a preferred embodiment of the present invention, the polyethylene chip is coated with sodium silicate, the size of which is 5 to 10mm.

In another aspect, the present invention is achieved by providing a fluorine-modified tar urethane coating waterproofing material characterized in that it is prepared in accordance with the manufacturing method of the fluorine-modified tarethane coating waterproofing material having the properties shown in Table 1 below.

(Table 1)

In addition, the present invention is another embodiment,

Applying a primer layer over the slab layer;

Applying a fluorine-modified tar urethane coating waterproofing layer to an upper surface of the primer layer;

Forming a waterproof sheet layer in close contact with the upper surface of the fluorine-modified tar urethane coating waterproofing material;

It is achieved by providing a waterproof construction method using a fluorine-modified tar urethane coating waterproofing material comprising the step of forming a protective mortar layer on the upper surface of the waterproof sheet layer.

According to a preferred embodiment of the present invention, the waterproof sheet layer is made of a polyvinyl chloride sheet and a nonwoven fabric formed thereon, and an upper surface of the polyvinyl chloride sheet is formed to protrude two spherical protrusions of two sizes, and a lower portion of the nonwoven fabric is formed. The fluorine-modified tar urethane coating waterproofing material is intimately contacted with the polyvinyl chloride sheet, and the upper spherical protrusion is constructed to serve as a skeleton of the protective mortar layer.

In a preferred embodiment of the present invention, the fluorine-modified polyurethane coating waterproofing material is 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer 35.3 ~ 40.1wt%, 2- (perfluorooctyl) Ethanol 5.5-6.4 wt%, 15.5-17.8 wt% 2- (perfluorodecyl) ethanol and 16.3-19.8 wt% 2,2-bis (4-hydroxyphenyl) hexafluoropropane and 21.8-27.3 wt% tar To prepare a fluorine-modified tar urethane,

55.7 to 65.7 wt% of the fluorine-modified tar urethane prepared above, 33.0 to 43.6 wt% of polyethylene chip, 0.3 to 1.1 wt% of polyoxyethylene ethyl thermomonoleate hydrocarbon, and 0.3 to 1.1 wt of polyoxyethylene alkyl thermosuccinic It is characterized by using a mixture prepared by uniformly dispersing the%.

In a preferred embodiment, the 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer has an isocyanate (NCO) INDEX of 2.0 to 2.8 and a theoretical isocyanate (NCO) wt% of 14 to It is characterized by using a weight average molecular weight manufactured in the range of 15 000 ~ 60000.

According to a preferred embodiment of the present invention, the polyethylene chip is coated with sodium silicate, the size of which is 5 to 10mm.

As described above, in the present invention, when the waterproof sheet layer is formed after the primer is applied to the upper part of the slab, the tar urethane is not absorbed into the waterproof sheet layer by using the fluorine-modified tar urethane coating waterproofing material. The advantage of preventing the occurrence of shrinkage of the sheet layer,

In addition, the fluorine-modified tar urethane coating waterproofing material is located under the waterproof sheet layer, thereby preventing the leakage of water by blocking the flow of water through the embossed protrusions under the waterproof sheet layer, which occurs when the waterproof sheet layer is first placed on the slab layer. That can be reduced or prevented,

 In addition, even if a leak occurs, it is possible to repair only the leaked portion without rolling and repairing the front surface of the waterproof sheet layer as in the prior art, and it is easy to maintain water, and also has the advantage of safety of construction safety of the multi-stage waterproof layer.

In addition, the waterproof layer structure including the fluorine-modified tar urethane coating waterproofing material is very strong in the external trauma,

In addition, it is an invention that is economically useful and has excellent characteristics of adhesive strength and crack resistance, and is an invention which is expected to be used in industry.

1 is an exemplary view showing a waterproof layer structure according to the present invention,
Figure 2 is an exemplary view showing a sheet according to an embodiment used in the waterproof sheet layer of the present invention.

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 the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Fluorine-modified tar urethane coating waterproofing material of the present invention is 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated polyurethane prepolymer 35.3 ~ 40.1 wt%, 2- (perfluorooctyl) ethanol 5.5 ~ 6.4 wt%, 15.5 to 17.8 wt% of 2- (perfluorodecyl) ethanol, 16.3 to 19.8 wt% of 2,2-bis (4-hydroxyphenyl) hexafluoropropane and 21.8 to 27.3 wt% of tar Preparing a fluorine-modified tar urethane;

Fluorine-modified tar urethane prepared according to the above step 55.7 ~ 65.7wt%, polyethylene chip 33.0 ~ 43.6wt%, polyoxyethylene ethyl thermomonohydrohydrocarbon 0.3 ~ 1.1wt% and polyoxyethylene alkyl thermoseptic 0.3 ~ 1.1 wt% of the mixture is uniformly dispersed to prepare a waterproof film.

In the fluorine-modified tar urethane production step, the mixed raw material is reacted at 50 to 60 ° C. for 3 to 4 hours to prepare a fluorine-modified tar urethane having a solid content of 95%. Here, the reason why the fluorine-modified tar urethane composition is reacted at 50 to 60 ° C. for 3 to 4 hours is that when the temperature is lower than 50 ° C., the reactivity between the fluorine compounds and the isocyanate is lowered. Because there is a problem.

In addition, when the reaction time is less than 3 hours, there is a problem in that the unreacted substance is present to reduce the performance of the finished product, and when the reaction time is more than 4 hours, there is a problem that the fluidity decreases due to an increase in molecular weight.

In the fluorine-modified tar urethane composition, 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated polyurethane prepolymer has an isocyanate (NCO) INDEX of 2.0 to 2.8 and a theoretical isocyanate (NCO) weight percent of 14 to 15 The weight average molecular weight prepared in the range is 50000 ~ 60000 to be 35.3 ~ 40.1wt% of the total composition, the reason for the composition is less than 35.3wt% has a problem in that the tensile strength and elongation decreases because the molecular weight is small If it is more than 40.1wt%, the viscosity increases rapidly during the reaction, which is difficult to produce.

In addition, when the 2- (perfluorooctyl) ethanol content is less than 5.5 wt%, residual isocyanate groups are present in the prepolymer, which may cause swelling by reacting with moisture during construction, and when the amount is higher than 6.4 wt%, the viscosity of the prepolymer is high. This is because it is difficult to manufacture a film waterproofing agent.

In addition, when the content of 2- (perfluorodecyl) ethanol is less than 15.5 wt%, residual isocyanate groups may be present in the prepolymer, which may cause swelling by reacting with moisture during construction.In addition, when the amount is higher than 17.8 wt%, the viscosity of the prepolymer is high. This is because it is difficult to manufacture a film waterproofing agent.

It is preferable that 2- (perfluorooctyl) ethanol is molecular weight 464, specific gravity 1.70, melting | fusing point 42-44 degreeC, and breaking point 95-105 degreeC. Moreover, it is preferable that 2- (perfluorodecyl) ethanol is molecular weight 564, specific gravity 1.71, melting | fusing point 92-93 degreeC, and breaking point 111-115 degreeC.

The reason for the numerical limitation of 16.3 to 19.8 wt% of 2,2-bis (4-hydroxyphenyl) hexafluoropropane is that when it is 16.3 wt% or less, it is not uniformly mixed with tar. Problem occurs

It is preferable that 2, 2-bis (4-hydroxyphenyl) hexafluoro propane is molecular weight 336, melting | fusing point 154-162 degreeC.

The reason for limiting the numerical value of the tar 21.8 to 27.3 wt% is 21.8 wt% or less, and there is a problem that the economic strength is lowered.

Fluorine-modified tar urethane 55.7-65.7 wt%, polyethylene chip 33.0-43.6 wt%, polyoxyethylene ethyl thermomonohydrohydrocarbon 0.3-1.1 wt%, and polyoxyethylene alkyl of 95% of the solid content prepared by the above method The fluorine-modified tar urethane coating waterproofing material is prepared by uniformly mixing 0.3-1.1 wt% of iseroxic.

The reason for limiting the numerical value of the fluorine-modified tar urethane among the fluorine-modified tar urethane coating waterproofing materials formed as described above is that the overall physical properties of the coating-water repellent material decreases. This is because there is a problem that the economy falls.

The reason for limiting the numerical value of the polyethylene chip 33.0 ~ 43.6wt% is less than 33.0wt%, the crack tracking resistance is lowered, and more than 43.6wt%, there is a problem in construction due to the sharp rise in viscosity.

In addition, polyethylene chips are coated with sodium silicate and use those having a size of 5 to 10 mm.

The reason for coating the soda silicate is to prevent the phenomenon of melting in the organic solvent contained in a small amount during the production of tar urethane.

In addition, the reason for limiting the size is that it is difficult to secure the thickness of the coating film when the construction is smaller than 5mm, the elongation is lowered if it is larger than 10mm.

 The polyoxyethylene ethyl ether monooleate hydrocarbon and polyoxyethylene alkyl ether isnic as a dispersant capable of preparing a very high solids type film waterproofing agent without using an additional solvent in 95% solid fluorine-modified tar urethane. Polyoxyethylene ethyl thermomonohydrohydrocarbon has a specific gravity of 0.83 to 0.87, a refractive index of 1.44 to 1.48, and a water content of 0.1% or less. The polyoxyethylene alkyl ether tricyclic has a specific gravity of 1.02 to 1.04, viscosity of 200 to 250 cps, and acid value. Use 112 to 102.

The reason for the numerical limitation is that the viscosity of the product is high because the dispersion is not performed well when using less than 0.3wt%, and when it is used more than 1.1wt%, the water resistance of the coating film decreases and the physical properties decrease when it is immersed in water for a long time. It is preferable to use 0.3 to 1.1 wt% in 55.7 to 65.7 wt% of fluorine-modified tar urethane.

The fluorine-modified tar urethane coating waterproofing material thus prepared is applied to a building civil structure using spray, rubber spatula, trowel, etc. to exhibit excellent tensile strength, low temperature flexibility, impact resistance, chemical resistance and abrasion resistance at a time of 2.5 to 3mm. Even if it is applied in thickness, the curing time is fast, in particular, the adhesive strength and the crack tracking resistance is excellent, and durability can be increased to prevent the aging phenomenon of the structure due to leakage.

In addition, it is very convenient because it can be repaired only when the leakage occurs due to the construction by the close contact method. Using the partial insulation method as in the prior art, it was difficult to check where the leakage occurs due to the water passage between the embossing protrusions formed on the lower portion of the sheet layer, but the bottom surface of the waterproof layer structure including the nonwoven fabric is flat as in the present invention. When it is adhered to the coated film waterproofing material and the front adhesive method, it is very easy to find and repair the leaking part.

Hereinafter, the test results of the fluorine-modified tar urethane coating waterproofing material of the present invention prepared according to the above production method are shown in Table 1.

Table 1 Test results of fluorine-modified tar urethane coating waterproofing materials

Fluorine-modified tar urethane coating waterproofing material according to the present invention having the performance as described above is excellent in durability, chemical resistance, adhesive aging resistance, ozone resistance, weather resistance, heat resistance and water repellency, construction time is fast and does not generate bubbles The fluorine-modified tar urethane coating waterproofing material has excellent workability and hardening of the surface and the bottom of the coating that occur in existing polyurethane coating waterproofing agent proceeds easily, but it is difficult to penetrate moisture from the hardened coating surface inside the coating film. Slowly and swelling defects caused by aldehydes that dissociate during curing often solve the problem that often occurs.

Hereinafter, the construction method using the fluorine-modified tar urethane coating waterproofing material of the present invention.

1 is an exemplary view showing a waterproof layer structure according to the present invention, Figure 2 is an exemplary view showing a sheet according to an embodiment used in the waterproof sheet layer of the present invention.

As shown in the present invention, the primer layer 2 is coated on the slab layer 1, and the fluorine-modified tar urethane coating waterproofing layer 3 prepared according to the manufacturing method as described above is coated on the upper surface thereof. It is constructed by a non-exposure method of forming a waterproof sheet layer 4 which is in close contact with the entire surface thereon and forming a protective mortar layer 5 thereon. Of course, if necessary, the pressed concrete layer 6 may be formed on the protective mortar layer. Here, the primer layer is a layer coated with the same material as the fluorine-modified tar urethane coating waterproofing material.

In the waterproof sheet layer used in the present invention, a non-woven fabric is formed under the polyvinyl chloride sheet, and the upper surface of the polyvinyl chloride sheet, that is, the surface on which the protective mortar is applied, has an inflat formed by continuously arranging two sized spherical protrusions ( Inflate) Use a waterproof sheet layer.

When used in this way, the non-woven fabric forming the lower surface is soaked in fluorine-modified tar urethane coating waterproofing material is in close contact with the entire surface.

In addition, the spherical protrusions of the two sizes formed on the upper surface serve as a skeleton and are strongly fixed and supported by a protective mortar applied thereon, thereby increasing durability.

The reason for the formation of two different spherical bumps is the same as the use of cement and aggregates of various sizes, ie large aggregates and smaller aggregates, in the manufacture of concrete. If only the aggregate of the same size is arranged to strengthen the strength of the weak part because the strength of the space between them may be weak.

When the polyvinyl chloride waterproof sheet layer configured as above is formed before the fluorine-modified tar urethane coating waterproofing material is applied, the solvent contained in the polyurethane is gradually absorbed by the polyvinyl chloride waterproof sheet layer, thereby causing the sheet to shrink and the embossed surface of the embossed sheet. It is located on the floor to act as a water passage to solve the problem of having to remove the front of the construction when a leak occurs. Of course, you may use any of the normal polyvinyl chloride sheets for the waterproof sheet layer of this invention.

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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): slab layer (2): primer layer
(3): Fluorine-modified tar urethane coating waterproofing layer (4): Waterproof sheet layer
(5): protective mortar layer (6): pressed concrete layer

Claims (10)

2,2,4-trimethyl-1,6-hexamethylenediisocyanate terminated polyurethane prepolymer 35.3 to 40.1 wt%, 2- (perfluorooctyl) ethanol 5.5 to 6.4wt%, 2- (perfluorodecyl) ethanol Preparing a fluorine-modified tar urethane by mixing 15.5 to 17.8 wt%, 26.3 to 19.8 wt% of 2,2-bis (4-hydroxyphenyl) hexafluoropropane, and 21.8 to 27.3 wt% of tar;
Fluorine-modified tar urethane prepared according to the above step 55.7 ~ 65.7wt%, polyethylene chip 33.0 ~ 43.6wt%, polyoxyethylene ethyl thermomonohydrohydrocarbon 0.3 ~ 1.1wt% and polyoxyethylene alkyl thermoseptic 0.3 Method for producing a fluorine-modified tar urethane coating waterproofing material characterized in that consisting of ~ 1.1 wt% by uniformly dispersing to prepare a coating film waterproofing material.
The method according to claim 1,
The fluorine-modified tar urethane coating step of producing a fluorine-modified tar urethane coating waterproofing material to produce a fluorine-modified tar urethane having a solid content of 95% by reacting the mixed composition of the raw material for 3 to 4 hours at 50 ~ 60 ℃.
The method according to claim 1,
The 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer has a weight average molecular weight prepared from an isocyanate (NCO) INDEX of 2.0 to 2.8 and a theoretical isocyanate (NCO) wt% of 14 to 15 The manufacturing method of the fluorine-modified tar urethane coating waterproofing material characterized by using these being 50000-60000.
The method according to claim 1,
The polyethylene chip is coated with sodium silicate, the manufacturing method of the fluorine-modified tar urethane coating waterproofing material, characterized in that using a size of 5 ~ 10mm.
A fluorine-modified tar urethane coating waterproofing material prepared according to any one of claims 1 to 4 and having the physical properties as shown in Table 1 below.
Table 1

Applying a primer layer over the slab layer;
Applying a fluorine-modified tar urethane coating waterproofing layer to an upper surface of the primer layer;
Forming a waterproof sheet layer in close contact with the upper surface of the fluorine-modified tar urethane coating waterproofing material;
Forming a protective mortar layer on the upper surface of the waterproof sheet layer; Waterproof construction method using a fluorine-modified tar urethane coating waterproofing material comprising a. The method of claim 6,
The waterproof sheet layer is made of a polyvinyl chloride sheet and a nonwoven fabric formed thereon, and the upper surface of the polyvinyl chloride sheet is formed to protrude two spherical protrusions of two sizes, and a lower portion of the fluorine-modified tar urethane coating is impregnated with a nonwoven fabric. The waterproof material is in close contact with the polyvinyl chloride sheet in front, and the upper spherical protrusion is constructed to serve as a skeleton of the protective mortar layer, waterproof construction method using a fluorine-modified tar urethane coating waterproofing material.
The method of claim 6,
The fluorine-modified polyurethane coating waterproofing material is 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer 35.3 ~ 40.1wt%, 2- (perfluorooctyl) ethanol 5.5 ~ 6.4wt%, 2 Fluorine-modified tar urethane was mixed by mixing 15.5 to 17.8 wt% (perfluorodecyl) ethanol, 16.3 to 19.8 wt% 2,2-bis (4-hydroxyphenyl) hexafluoropropane, and 21.8 to 27.3 wt% tar. Manufacturing,
55.7 to 65.7 wt% of the fluorine-modified tar urethane prepared above, 33.0 to 43.6 wt% of polyethylene chip, 0.3 to 1.1 wt% of polyoxyethylene ethyl thermomonoleate hydrocarbon, and 0.3 to 1.1 wt of polyoxyethylene alkyl thermosuccinic Waterproofing method using a fluorine-modified tar urethane coating waterproofing material characterized by using a mixture prepared by uniformly dispersing%.
The method of claim 6,
The 2,2,4-trimethyl-1,6-hexamethylene diisocyanate terminated tar urethane prepolymer has a weight average molecular weight prepared from an isocyanate (NCO) INDEX of 2.0 to 2.8 and a theoretical isocyanate (NCO) wt% of 14 to 15 The waterproof construction method using the fluorine-modified tar urethane coating waterproofing material characterized by using 50000-60000.
The method of claim 6,
The polyethylene chip is coated with sodium silicate, the waterproof construction method using a fluorine-modified tar urethane coating waterproofing material, characterized in that using a size of 5 ~ 10mm.

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