KR101054616B1 - Complex waterproof construction of extra rapid-hardening hybrid urethane and method - Google Patents

Abstract

PURPOSE: A waterproof structure, using quick hardening hybrid polyurethane, and a waterproofing method thereof are provided to improve productivity and to reduce an operation time. CONSTITUTION: A waterproof structure comprises a plurality of bonding holes which makes rapid hardening hybrid polyurethane directly adhere to a base. A bonding hole is near the width direction of the permeability sheet in the mountain shape or rectangular shape of zigzag. The bonding holes are widely formed on a ventilation sheet.

Description

Complex waterproof construction of extra rapid-hardening hybrid urethane and method}

The present invention relates to a waterproof structure using a superhard hybrid polyurethane and a waterproofing method thereof, and more particularly, to provide a breathable sheet on the base surface or to apply a soft coating material to the sheet or soft coating material By applying a hard superhard hybrid polyurethane, the superhard hybrid polyurethane is protected against building behavior by the effect of inducing firm adhesion of the super fast hybrid polyurethane to the base surface through the sheet and the soft coating material. The present invention relates to a waterproof structure and a waterproofing method using a superhard hybrid polyurethane to enhance waterproof construction competitiveness to shorten working time and improve workability.

In general, concrete structures such as rooftop slabs, roofs, basements of buildings, or various fluid storage tanks have weak waterproofing properties, so rainwater or groundwater can seep into the water, which not only reduces the binding force of the concrete itself, but also Due to the volume change, cracks occur in the concrete, shortening the life of the building.

In addition, when rainwater or groundwater flows through or leaks through concrete cracks, the function of the building is lost. Therefore, waterproofing to prevent rainwater or groundwater from seeping through is very important.

The waterproof method of such concrete structure is largely permeable waterproof method and the film-type waterproof method, the waterproof method is to apply waterproofing material on the concrete surface to change the concrete itself to have waterproofness, and the film-type waterproof method It is a method to cope with cracks in concrete structures or construction defects of other buildings by forming multiple layers of impermeable waterproof layers inside and outside structures.

And the film type waterproofing furnace is divided into asphalt waterproofing, sheet waterproofing, waterproofing coating, etc. according to the type and construction method of impervious coating material.

For example, asphalt waterproofing is mainly used for roofs, basements, water tanks, and indoor waterproofing. After the structure is dried, the asphalt primer is applied by brushing or spraying the asphalt and melting the asphalt to form a waterproof layer having a predetermined thickness. .

However, during the waterproof construction, the container containing the raw material of the asphalt is kept heated so that the asphalt does not solidify, and the worker carries a certain amount of the high temperature liquid asphalt to perform waterproofing, in which case the liquid asphalt is generated. There is a problem such as workability, risks and environmental pollution that can cause injury or burns due to odor and volatile organic compounds (VOCs).

And the sheet waterproofing is a waterproof method of attaching a waterproof sheet of a predetermined thickness made of synthetic rubber, synthetic resin, and the like with an adhesive.

The sheet waterproof is suitable for construction in a large area, and has good elasticity, the responsiveness to the crack of concrete is superior to asphalt or coating waterproofing, and has the advantage of simple operation.

However, the conventional sheet waterproofing method has a problem in that a process of joining joints between neighboring waterproof sheets is complicated, as well as defects such as cracks in joints.

That is, in the conventional sheet waterproofing method, in a method of joining joints (or seams) between neighboring waterproof sheets, the ends of neighboring waterproof sheets are overlapped (or referred to as 'overlap') by a predetermined length with an adhesive or adhesive tape. Overlap joint method of bonding or melting with heat and heat fusion, and joining by bonding the end faces of neighboring waterproof sheets and filling liquid adhesive therebetween or reinforcing a separate waterproof tape or joint on the upper surface of neighboring waterproof sheets There was a butt joint method.

However, the butt joint method has a small joint area and frequently causes defects in which the joints are separated.

Looking at an example of a conventional sheet waterproofing method, an overlapping joining method is used in which overlapping joints are installed in a predetermined width and then bonded by thermal fusion bonding of overlapping joints.

That is, in the conventional sheet waterproofing method, first, by applying a predetermined adhesive on the concrete structure in front or in part to form a first adhesive layer, and to install the one side waterproof sheet so that the bottom surface of the waterproof sheet on the first adhesive layer, The other waterproof sheet is installed to overlap the waterproof sheet with a predetermined width.

Thereafter, the overlapped portions of the first and second waterproof sheets are melted with heat, and then pressed by a roller to be bonded to each other.

And a coating film waterproofing material is applied to a predetermined thickness on the upper surface of the waterproof sheet bonded to overlap each other to form a coating film waterproofing layer.

The waterproof structure constructed according to this conventional method maintains the waterproof performance by forming a double impermeable coating by the waterproof sheet and the coating film waterproof layer.

However, such a waterproof method has a problem of reducing the construction efficiency because the drying time after the installation of the waterproof sheet and coating the coating material usually takes 1 to 2 days.

In order to solve this problem, Korean Patent No. 624828 (name: heat insulation, waterproof, soundproofing agent and its coating method using a low-foaming urethane foam and ultra-fast curing polyurea), Republic of Korea Patent No. 884015 (name: superhard hybrid A waterproofing method using a superhard hybrid urethane such as a ventilation-absorbing composite waterproof structure and a method using urethane) has been provided.

However, since the curing time is fast due to the superhard hybrid urethane, there is an effect of reducing the work time, but there was a problem that the peeling phenomenon can easily occur due to the weak adhesive strength of the super fast hybrid hybrid urethane on the base surface.

The present invention proposes to solve the above problems, an object of the present invention is to install a sheet having a breathable on the base surface and to apply a superhard hybrid polyurethane to the sheet, the sheet surface on the basis of the sheet The present invention provides a waterproof structure and a waterproofing method using a superhard hybrid polyurethane to enhance waterproof construction competitiveness by reducing the working time and improving workability by inducing firm adhesion of the super fast hybrid hybrid polyurethane.

Composite waterproof structure and method using the super fast carbide hybrid polyurethane of the present invention for achieving the above object, in the waterproof structure using a super fast carbide hybrid polyurethane, the waterproof structure is applied to the base surface at a predetermined interval by applying an adhesive layer An ultrafast mirror hybrid is formed on the upper surface of the breathable sheet or the coating layer by forming a coating layer having a breathable sheet on the base surface or applying a soft coating material on the base surface so that both ends adjacent to the adhesive layer are fixed to a fixed width. Polyurethane is applied; Embossing is formed at both ends in the width direction of the breathable sheet so that degassing is smoothly at the bottom of the sawtooth wave shape and the bottom so as to maximize the adhesive area when the adhesive layer is fixed to the adhesive layer and thus the adhesive force is improved; The super hard carbide hybrid polyurethane is 20 ~ 40 wt% Ethylene glycol, 5 ~ 6wt% Neopentyl glycol, 10 ~ 15wt% p-phenylene diisocynate (PPDI), 3 ~ 5wt% 4,4-Diphenylmethane diisocyanate (MDI), polyethylene terephthalate 15 to 17wt%, 5 to 8wt% hydrocarbon, 16 to 20wt% polydiphenyltriamine, 5 to 7wt% pigment (Cr ₃ O ₃ ), H ₂ O 1 ~ 2wt%;

In the present invention, the breathable sheet is formed with a plurality of adhesive holes for bonding the superhard mirror polyurethane directly to the base surface; Preferably, the adhesive holes form a group of zig-zags in the width direction of the breathable sheet and are formed in a plurality of groups adjacent to a group, and a plurality of groups of the adhesive holes are distributed in the breathable sheet.

In the present invention, the coating layer is preferably made of any one of urethane, inorganic coating material, epoxy coating material, acrylic coating waterproofing material, or cement-containing polymer coating material.

The present invention, in the waterproof structure using a superhard mirror polyurethane, the waterproof structure is coated with a breathable sheet on the base surface such that the adhesive layer is applied to the base surface at a predetermined interval and both ends adjacent to the adhesive layer fixed fixed adhesion Forming a coating layer coated with a soft coating material at a predetermined thickness on an upper surface of the breathable sheet, and a superhard mirror hybrid polyurethane is coated on the upper surface of the coating layer; Embossing is formed at both ends in the width direction of the breathable sheet so as to smooth out the deformed shape at the sawtooth wave shape and the lower end so as to maximize the adhesive area when the adhesive layer is fixed to the adhesive layer to improve the adhesive force; The super hard carbide hybrid polyurethane is 20 ~ 40 wt% Ethylene glycol, 5 ~ 6wt% Neopentyl glycol, 10 ~ 15wt% p-phenylene diisocynate (PPDI), 3 ~ 5wt% 4,4-Diphenylmethane diisocyanate (MDI), polyethylene terephthalate 15 to 17wt%, 5 to 8wt% hydrocarbon, 16 to 20wt% polydiphenyltriamine, 5 to 7wt% pigment (Cr ₃ O ₃ ), H ₂ O 1 ~ 2wt%;

As described above, by installing a sheet having air permeability on the base surface and applying a superhard hybrid polyurethane to the sheet, the work time is shortened by inducing a firm adhesion of the superhard hybrid polyurethane to the base surface through the sheet And it is effective to strengthen the waterproof construction competitiveness to improve workability.

1 is a cross-sectional view of a waterproof structure according to the present invention.
2 is a plan view of a breathable sheet according to the present invention.
Figure 3a, b is a plan view showing another embodiment of a breathable sheet according to the present invention.
Figure 4 is a process diagram of the waterproof method according to the invention.
5 is a cross-sectional view of a waterproof structure according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view of a waterproof structure according to the present invention, Figure 2 is a plan view of a breathable sheet according to the present invention, see this.

The waterproof structure, after arranging the base surface 10 to be installed in the waterproof layer, the adhesive layer 20 is applied to the base surface 10 with a predetermined interval and a predetermined width, neighboring each other on the upper surface of the adhesive layer 20 And each end is adhered to the breathable sheet 30, and the breathable sheet 30 is bonded to a predetermined width and penetrates the breathable sheet 30 to adhere the breathable sheet 30 to the base surface 10 It consists of a superhard mirror hybrid polyurethane 40 which is applied to a certain thickness upward.

Of course, although not shown, the base surface 10 is provided with a degassing apparatus (or 'debase-based', 'degassing') for discharging water vapor generated between the base surface 10 and the waterproof layer to the outside. It is.

The cleanup of the base surface 10 removes foreign matter or latency remaining on the base surface 10 by using a high-speed water injector used during waterproof construction.

The adhesive layer 20 is a means for adhesively fixing both ends of the air-permeable sheet 30 provided adjacent to each other, the adhesive layer 20 is used as long as the adhesive used when adhesively fixing both ends of the sheet in the waterproof construction It is possible.

In this case, the adhesive layer 20 is preferably made of a urethane having properties similar to those of the cemented carbide hybrid polyurethane 40, which is to improve the firmness by affinity with the cemented carbide hybrid polyurethane 40.

In addition, the adhesive layer 20 has a spacing interval of 800 ~ 1200mm, the width is 100 ~ 200mm, the coating thickness is preferably formed of 0.3 ~ 1mm.

The breathable sheet 30 is a means that serves as a medium for inducing the ultra-hard mirror hybrid polyurethane 40 to be firmly bonded to the base surface 10.

In addition, the breathable sheet 30 may be any one of a nonwoven fabric, a woven fabric, and a synthetic resin, or a woven mixture of these may be used, and preferably the nonwoven fabric.

In addition, the breathable sheet 30 has a structure in which the superhard mirror hybrid polyurethane 40 can easily penetrate as a whole, and a sawtooth-shaped waveform 32 is formed at the end thereof.

That is, as the breathable sheet 30 is provided with the waveforms 32 of neighboring ends alternately with each other, the breathable sheet 30 is maximized by the adhesive layer 20, thereby adhering the breathable sheet 30 by the adhesive layer 20. It is desirable to improve the strength.

In addition, as shown in the enlarged view of FIG. 1, it is preferable that an embossing 34 is formed at the lower end of the breathable sheet 30, and of course, embossing can be formed at both the upper and lower ends thereof. 34 forms a gap with the base surface 10 to induce rapid degassing such as water vapor generated in the base surface 10.

Figure 3a, b is a plan view showing another embodiment of a breathable sheet according to the present invention, see this.

Referring to FIG. 3A, a plurality of adhesive holes 36 are formed in the breathable sheet 30, and the adhesive holes 36 are zigzag-shaped in the width direction of the breathable sheet 30. .

Alternatively, referring to FIG. 3B, the adhesive holes 36 formed in the breathable sheet 30 form a group formed in a plurality of rectangles and close to one group, and the groups of the adhesive holes 36 are formed in the breathable sheet 30. Many are distributed.

On the other hand, the shape of the adhesive hole 36 formed in Figure 3a or 3b can be formed in various shapes and arrangements, such as triangular, square, rhombic, etc., depending on the purpose and location of the construction.

Therefore, forming the plurality of adhesive holes 36 as described above, the super-speed hybrid polyurethane 40 is applied to the upper surface of the breathable sheet 30 directly through the adhesive hole 36 the base surface 10 As it penetrates and is fixed, it will improve adhesion.

The super hard mirror hybrid polyurethane 40 is a means to have a fast curing and constant elasticity, have waterproofness, durability, and also shorten the waterproof construction time.

The super hard mirror hybrid polyurethane 40 is composed of polyol, diisocyanate and polyester, and their compositions are as follows.

The super hard carbide hybrid polyurethane is 20 ~ 40 wt% Ethylene glycol, 5 ~ 6wt% Neopentyl glycol, 10 ~ 15wt% p-phenylene diisocynate (PPDI), 3 ~ 5wt% 4,4-Diphenylmethane diisocyanate (MDI), polyethylene terephthalate 15 ~ 17wt%, 5 ~ 8wt% hydrocarbon, 16 ~ 20wt% polydiphenyltriamine, 5 ~ 7wt% pigment (Cr ₃ O ₃ ), H ₂ O 1 ~ 2wt%.

Looking at the waterproof method for achieving the waterproof structure as described above are as follows.

Ground surface cleaning step (S10) is a step of removing foreign matters on the base surface to be waterproofed, which removes the foreign matter or latencies, etc. remaining on the base surface 10, using a high-pressure water injector, etc. Filling the grooves or cracks in the base surface 10 to maintain the flatness.

Adhesive layer forming step (S20) is a step of forming an adhesive layer having a predetermined width at a predetermined interval on the base surface arranged through the base surface cleaning step (S10), the float of 800 ~ 1200mm on the arranged base surface 10 The adhesive layer 20 is formed by spraying an adhesive made of urethane having a thickness of 100 to 200 mm and a coating thickness of 0.3 to 1 mm with a brush or spray.

The breathable sheet laying step (S30) is a step of fixing the breathable sheet installed on the base surface by adhering both ends of the adjacent breathable sheets to the adhesive layer formed on the base surface through the adhesive layer forming step (S20).

This adhesively fixes each of both ends of the breathable sheet 30 adjacent to the upper surface of the adhesive layer 20 formed at a predetermined interval on the base surface 10. In this case, since the sawtooth wave 32 is formed at both ends of the breathable sheet 30, the sawtooth wave 32 is alternately bonded, thereby improving the adhesion by maximizing the adhesion area.

Super fast hybrid polyurethane coating step (S40) is a step of forming a waterproof layer by applying a super fast hybrid hybrid polyurethane to a breathable sheet installed on the base surface through the breathable sheet laying step (S30).

This sprays a superhard mirror hybrid polyurethane with a high pressure spray on the upper surface of the breathable sheet 30, the supersonic mirror hybrid polyurethane 40 is sprayed by the injection pressure and the air permeability of the breathable sheet 30 is a breathable sheet It penetrates into the base surface 10 through 30 and is adhere | attached.

In addition, the spray-coated super hard mirror hybrid polyurethane 40 has the effect that it can be used after construction as it is cured in water.

In addition, since the super hard mirror hybrid polyurethane 40 has an elastic force, it has the effect of simultaneously performing the role of the bottom layer in addition to the waterproof purpose.

On the other hand, after applying the superhard mirror hybrid polyurethane 40, a top coating layer may be further formed thereon.

On the other hand, the waterproof method using a superhard hybrid polyurethane as described above can be used on a flat surface such as a rooftop slab, but more preferably used in a place such as a slope or a domed or curved roof or the floor of a parking lot. It is also suitable for waterproof repair.

When the tensile test for the waterproof structure using a superhard hybrid polyurethane made of the above process was commissioned by the Institute of Construction Technology, Seoul National University of Science and Technology,

Table 1 Tensile Performance Test Results

Figure 5 is a cross-sectional view of the waterproof structure according to another embodiment of the present invention, see this.

Looking at the waterproof structure according to another embodiment of the present invention, the primer is sprayed on the arranged base surface 10, to form a coating layer 50 coated with a predetermined thickness of the soft coating material, the coating layer 50 On the upper surface of the hard super hard mirror hybrid polyurethane 40 is spray applied by spraying.

The coating layer 50 is preferably made of any one of an inorganic coating material made of a mixture of urethane, acrylic resin and cement, an epoxy coating material, an acrylic coating waterproofing material, or a cement mixed polymer coating material, but is not limited thereto. If it is a coating film material used for a coating film waterproofing method, it can replace and use any.

Therefore, the soft coating layer 50 is excellent in responsiveness to the building behavior, and the hard superhard mirror polyurethane 40 protects the coating layer 50 by external environment. As a result, it improves waterproof construction and maintainability.

On the other hand, the present invention can be carried out a composite method applying the above embodiment in combination, the breathable sheet 30 is provided on the base surface 10, the soft coating film on the upper surface of the breathable sheet 30 After coating the ash to form the coating layer 50, the superhard mirror hybrid polyurethane 40 is coated on the coating layer 50.

In this case, the base surface 10 is coated with a plurality of adhesive layers 20 having a predetermined interval as described above for easy adhesive fixing of the breathable sheet 30, in some cases the adhesive layer 20 This may be omitted, because the breathable sheet 30 is adhesively fixed to the base surface 10 by the coating layer 50 applied to the upper portion of the breathable sheet 30.

As described above, the substrate 10 has a structure of the breathable sheet 30 and the soft coating layer 50. The breathable sheet 30 allows the soft coating layer 50 to form the base surface ( 10) as well as helping to achieve a strong adhesion to the reinforcing role of strengthening the tensile strength of the soft coating layer 50, the damage of the coating layer 50 by the behavior of the building or external impact. It has a suppressing effect.

This effect is to reduce the construction time of the waterproof structure constructed on the base surface 10 to enhance the competitiveness of waterproof construction, and also to improve the durability and amplify the service life, thereby reducing the overall facility cost.

What has been described above is just one embodiment for carrying out the waterproof structure and the waterproofing method using a superhard mirror polyurethane according to the present invention, the present invention is not limited to the above-described embodiment, in the claims below Without departing from the gist of the present invention, any person having ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

10: base surface 20: adhesive layer
30: breathable sheet 32: waveform
34: embossing 36: adhesive hole
40: superhard hybrid polyurethane

Claims (7)

In the waterproof structure using a super hard mirror hybrid polyurethane, the waterproof structure is
The adhesive layer 20 is applied to the base surface 10 at a predetermined interval, and the breathable sheet 30 is installed on the base surface 10 so that both ends adjacent to the adhesive layer 20 are fixed to a fixed width. Superhard mirror hybrid polyurethane 40 is applied to the upper surface of 30);
The breathable sheet 30 is any one of a nonwoven fabric, a woven fabric, or a synthetic resin, or a combination thereof, and a woven wave form is provided at both ends in the width direction so as to maximize the adhesion area when the adhesive layer 20 is fixed to the adhesive layer 20. An embossing 34 is formed at the 32 and the lower end so that degassing is smooth;
The super hard carbide hybrid polyurethane (40) is 20 to 40 wt% Ethylene glycol, 5 to 6 wt% Neopentyl glycol, 10 to 15 wt% p-phenylene diisocynate (PPDI), 3 to 5 wt% 4,4-Diphenylmethane diisocyanate (MDI) , polyethylene terephthalate 15 ~ 17wt%, hydrocarbon 5 ~ 8wt%, polydiphenyltriamine 16 ~ 20wt%, pigment (Cr ₃ O ₃ ) 5 ~ 7wt%, H ₂ O 1 ~ 2wt%;
Waterproof structure using a super hard mirror hybrid polyurethane, characterized in that the composition.
The method of claim 1, wherein the breathable seat 30
A plurality of bonding holes 36 are formed to bond the superhard mirror hybrid polyurethane 40 directly to the base surface 10;
The adhesive holes 36 form a group of zig-zags in the width direction of the breathable sheet 30 and are formed in a plurality of groups adjacent to a group, and a plurality of groups of the adhesive holes 36 are formed in the breathable sheet 30. To be distributed;
Waterproof structure using a super hard mirror hybrid polyurethane, characterized in that the configuration.
In the waterproof structure using a super hard mirror hybrid polyurethane, the waterproof structure is
A soft coating layer 50 is formed on the base surface 10 in which foreign matters or latencies are arranged, and a soft coating layer 50 is coated on the upper surface of the coating layer 50. Is applied;
The super hard carbide hybrid polyurethane (40) is 20 to 40 wt% Ethylene glycol, 5 to 6 wt% Neopentyl glycol, 10 to 15 wt% p-phenylene diisocynate (PPDI), 3 to 5 wt% 4,4-Diphenylmethane diisocyanate (MDI) , polyethylene terephthalate 15 ~ 17wt%, hydrocarbon 5 ~ 8wt%, polydiphenyltriamine 16 ~ 20wt%, pigment (Cr ₃ O ₃ ) 5 ~ 7wt%, H ₂ O 1 ~ 2wt%;
Waterproof structure using a super hard mirror hybrid polyurethane, characterized in that the composition.
The method of claim 3, wherein the coating layer 50
Any one of urethane, inorganic coating material, epoxy coating material, acrylic coating waterproofing material, or cement mixed polymer coating material;
Waterproof structure using a super hard mirror hybrid polyurethane, characterized in that consisting of.
In the waterproof structure using a super hard mirror hybrid polyurethane, the waterproof structure is
The adhesive layer 20 is applied to the base surface 10 at a predetermined interval, and the breathable sheet 30 is installed on the base surface 10 so that both ends adjacent to the adhesive layer 20 are fixed to a fixed width. 30 is formed on the upper surface of the coating film layer 50 coated with a soft coating material to a predetermined thickness, and the super-speed hybrid polyurethane 40 is applied to the upper surface of the coating film 50;
The breathable sheet 30 is any one of a nonwoven fabric, a woven fabric, or a synthetic resin, or a combination thereof, and a woven wave form is provided at both ends in the width direction so as to maximize the adhesion area when the adhesive layer 20 is fixed to the adhesive layer 20. An embossing 34 is formed at the 32 and the lower end so that degassing is smooth;
The super hard carbide hybrid polyurethane (40) is 20 to 40 wt% Ethylene glycol, 5 to 6 wt% Neopentyl glycol, 10 to 15 wt% p-phenylene diisocynate (PPDI), 3 to 5 wt% 4,4-Diphenylmethane diisocyanate (MDI) , polyethylene terephthalate 15 ~ 17wt%, hydrocarbon 5 ~ 8wt%, polydiphenyltriamine 16 ~ 20wt%, pigment (Cr ₃ O ₃ ) 5 ~ 7wt%, H ₂ O 1 ~ 2wt%;
Waterproof structure using a super hard mirror hybrid polyurethane, characterized in that the composition.
In the waterproof method using a super hard mirror hybrid polyurethane, the waterproof method is
A base surface cleansing step (S10) for cleaning the base surface by removing foreign substances on the base surface to be waterproofed;
An adhesive layer forming step (S20) of forming an adhesive layer having a predetermined width at a predetermined interval on the base surface arranged through the base surface cleaning step (S10);
A breathable sheet laying step (S30) for fixing the breathable sheet installed on the base surface by adhering both ends of the adjacent breathable sheet to each other to the adhesive layer formed on the base surface through the adhesive layer forming step (S20); And
The ultra-fast hybrid polyurethane coating step (S40) of forming a waterproof layer by applying a super-speed hybrid polyurethane to the breathable sheet installed on the base surface through the breathable sheet laying step (S30);
Embossing is formed at both ends in the width direction of the breathable sheet so that degassing is smoothly at the bottom of the sawtooth wave shape and the bottom so as to maximize the adhesive area when the adhesive layer is fixed to the adhesive layer and thus the adhesive force is improved;
The super hard carbide hybrid polyurethane is 20 ~ 40 wt% Ethylene glycol, 5 ~ 6wt% Neopentyl glycol, 10 ~ 15wt% p-phenylene diisocynate (PPDI), 3 ~ 5wt% 4,4-Diphenylmethane diisocyanate (MDI), polyethylene terephthalate 15 to 17 wt%, hydrocarbons 5 to 8 wt%, polydiphenyltriamine 16 to 20 wt%, pigment (Cr ₃ O ₃ ) 5 to 7 wt%, H ₂ O 1 to 2 wt%;
Waterproof method using a super hard mirror hybrid polyurethane, characterized in that the composition.
The method of claim 6, wherein the breathable sheet
A plurality of adhesive holes are formed to allow the cemented carbide hybrid polyurethane to directly adhere to the base surface;
Wherein the adhesive holes form a group of zig-zags in the width direction of the breathable sheet and are formed in a plurality of groups adjacent to a group, and a plurality of groups of the adhesive holes are distributed in the breathable sheet;
Waterproof method using a super hard mirror hybrid polyurethane, characterized in that the configuration.

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