KR101879507B1 - The waterproof sheet containing PVB - Google Patents

Abstract

The present invention relates to a waterproof sheet containing PVB as a material for waterproofing a roof, an underground parking lot, an underground outer wall, a subway, an underground driveway, Which can solve the complexity of construction and air of conventional products, and which is cheap, and which overcomes the problems of conventional waterproof sheets that required periodical waterproofing reinforcement in the short term, In order to achieve the above object, a PVB is contained in an amount of 60 to 85% by weight, a component of SBS or PVC is contained in an amount of 8 to 25% by weight for the purpose of providing a renewable and environmentally friendly waterproof sheet, Wherein the calcium carbonate is 5 to 25% by weight and the M / B is 2 to 5% by weight. A.

Description

The waterproof sheet containing PVB (PVB)

The present invention relates to a waterproof sheet containing polyvinyl butyral (PVB) as a waterproof material for an underground concrete structure such as a roof of a building, an upper part of an underground parking lot, an underground outer wall, a subway, an underpass,

Generally, as a waterproofing method for underground concrete and asphalt structures such as rooftops of buildings, underground parking lots, underground outer walls, subways, underground roads, and ball tools, asphalt felts obtained from petrochemical series, Layered construction using a waterproof material made of fibers or the like has been used. However, since the above method is required to work at a high temperature, the operation is dangerous, the process is complicated in the case of a double layer construction, sensitivity to external environment such as temperature and smoke is high, .

In order to overcome the disadvantages of the conventional construction method, a waterproof sheet is applied as a waterproofing method for concrete and an asphalt base surface. However, in the case of applying a waterproof sheet which is generally used, It is necessary to remove the foreign matter on the surface and to reinforce the waterproof layer on the vulnerable portion where the waterproofing is liable to occur. It is also necessary to apply an asphalt primer such as an Evi Seal (desulfurization rubber) liquid and reapply the coating film waterproofing material such as polyurethane A series of processes is performed.

After the above-described additional step, a construction method in which a waterproof sheet is attached to a base surface and a waterproof layer protective mortar is installed is applied.

 However, there is a disadvantage in that the liquid phase of the EVA seal (desulfurized rubber) which is used as the asphalt primer has a disadvantage in that it is expensive, and because of the nature of the liquid phase of the EVA seal (desulfurized rubber) which is not hardened, There is a problem that the air is lengthened and the construction is complicated because it is necessary to perform the next step operation within 2 hours after waiting for the state to be volatilized and not to be buried in the hand.

In addition, since the urethane waterproofing material is vulnerable to moisture, it is prone to breakage of the waterproof layer due to water vapor, so waterproof reinforcement must be performed every 3 to 4 years, and there is a problem that harmful substances are generated in the human body.

Accordingly, there is a need for a non-toxic waterproof sheet which can be used at low cost and semi-permanently.

Accordingly, various methods and waterproof sheets have been introduced in the prior art as a waterproofing method. Domestic registered patent No. 100814087 (Patent document 1) discloses an asphalt waterproof sheet using butyl rubber or polyvinyl butylal and a waterproofing method using the same, An adhesive layer, an overlayer film, and an adhesive layer formed on the lower part of the lower part of the lower part of the lower part of the lower part of the lower part, Compound layer; And an asphalt waterproof sheet using polyvinyl butyral (PVB). "However, there are differences in the constituent components of the present invention, and in the apparatus for manufacturing an asphalt waterproof sheet in Korean Patent No. 100814945 (patent document 2) The present invention relates to an apparatus for manufacturing a waterproof sheet, which comprises a nonwoven roll and an asphalt compound layer and is coated with a butyl rubber liquid phase, a butyl rubber adhesive tape or polyvinyl butyral (PVB) Ester film or polyethylene film coated with a waterproof sheet ", which is different from the constituent components of the present invention. Domestic registered patent No. 100940350 (Patent document 3) discloses a water-repellent asphalt waterproof sheet and a waterproof method using the same &Quot; a core material layer made of polyester fibers;

A top compound layer impregnated on a lower part of the core material layer; a star lap which is an adhesive layer formed on a lateral direction of the upper compound layer; A side lap which is an adhesive layer formed in a direction of 90 degrees and an add lap which is a sealing layer formed on an upper side of the side lap, (Patent Document 4). In a waterproof sheet for a tunnel and a tunnel to which the tunnel is applied, "installed between the shotcrete layer 512 of the tunnel and the lining concrete layer 520, A plurality of protrusions 212 are formed by arranging a plurality of protrusions 212 spaced apart from each other on one side of the sheet 210, and between the protrusions 212, Generated may have been disclosed prior art of the space portion 214 formed by laying one absorbent drain boards 220 "to the attribute.

Accordingly, unlike the prior art, the present invention is characterized by including polyvinyl butyral (PVB), polyvinyl chloride (PVC), and calcium carbonate, thereby simplifying construction and reducing costs, I would like to introduce environmentally friendly waterproof sheet.

Asphalt waterproof sheet using butyl rubber or polyvinyl butyral and waterproofing method using the same Asphalt waterproof sheet manufacturing equipment Waterproofing method using asphalt waterproof sheet Waterproof sheets for tunnels and tunnels using them

Therefore, the object of the present invention is to solve the problems of the conventional waterproofing material and the waterproofing sheet described above, and it is an object of the present invention to solve the problems of the conventional waterproofing material and waterproofing sheet, The present invention provides a waterproof sheet that is non-toxic, reproducible, and environmentally friendly, while overcoming the problems of the conventional waterproof sheet and greatly reducing the work due to cracking or breakage.

In order to achieve the above object, the waterproof sheet of the present invention is a waterproof sheet using polyvinyl butyral (PVB) for waterproofing a base surface such as concrete and asphalt, wherein polyvinyl butyral (PVB) alchol and butyraldehyde, and the waterproof sheet comprises 60 to 85% by weight of polyvinyl butyral (PVB), styrene-butadiene styrene (SBS) Wherein one component of vinyl chloride (PVC) is composed of 8 to 25 wt%, calcium carbonate is 5 to 25 wt%, masterbatch (M / B, Master Batch) is 2 to 5 wt% And a protective material is attached thereto.

The waterproof sheet using the polyvinyl butyral (PVB) of the present invention having the above-described structure has the following effects.

First, by producing a waterproof sheet containing a large amount of calcium carbonate harmless to the human body, an environmentally friendly product can be manufactured, and recycling is possible, thereby reducing the amount of carbon dioxide generated at the time of disposal without causing environmental pollution .

Second, polyvinyl butyral (PVB) has good transparency, low temperature effect on mechanical properties, and excellent cold resistance, and its flexibility is not lost even at -50 ° C. Because of its moisture resistance, no discoloration due to sunlight and excellent adhesion, the mixture of polyvinyl butyral (PVB) liquid and cement is well adhered to each other. This is possible.

Third, because of the nature of the liquid phase, which is not cured, the polyvinyl butyral (PVB) liquid phase is remarkably shortened by virtue of its hardening properties, unlike the conventional method, which had to wait until it solidified In addition, since the price is low compared to the liquid phase of the Evi seal (desulfurized rubber), it is possible to provide a less expensive supply than the conventional method.

FIG. 2 is a test data for detecting six heavy metals as a non-toxic detection test report on a waterproof sheet using polyvinyl butyral (PVB) according to an embodiment of the present invention.
3 and 4 are test reports on tear strength and tensile strength of a waterproof sheet using polyvinyl butyral (PVB) according to an embodiment of the present invention.

The present invention relates to a waterproof sheet made of polyvinyl butyral (PVB), SBS or PVC, a calcium carbonate and a masterbatch (M / B), and a waterproof layer protection material adhered on the waterproof sheet, The present invention will be described in detail.

A waterproof sheet using polyvinyl butyral (PVB) for the practice of the present invention is constructed as shown in the drawings.

The waterproof layer protecting material located on the outer surface of the waterproof sheet serves to separate the waterproof sheets from each other, and a polyethylene film or the like can be used.

Polyvinyl Butyral (PVB) is formed by the condensation reaction of polyvinyl alcohol and butylaldehyde. It has excellent bonding strength (High Binding Efficiency), High Adhesion to Surfaces and flexibility The high toughness with flexibility and the optical clarity are recognized.

Therefore, it is used to improve the physical properties of polyvinylbutylal (PVB) due to the properties of toughness, flexibility and adhesion.

In the case of a general asphalt sheet, if the base material is collected and waterproofing is performed to basically reinforce the waterproof layer, the asphalt pavement Ebisil (desulfurized rubber) liquid is applied, the polyurethane coating film waterproofing material is applied, . However, since the liquid phase of the asphalt primer Evisil (desulfurization rubber) is completely dried, since the gas of the solvent is appropriately volatilized so that the gas is not buried in the hand, the construction must be performed within two hours, The use of polyurethane as a coating film waterproofing agent not only detects toxic substances but also the urethane waterproofing materials are vulnerable to moisture, so that the waterproof layer is liable to be damaged by water vapor. Therefore, 3 to 4 years Waterproof reinforcement should be done at regular intervals.

However, in the case of a waterproof sheet using polyvinyl butyral (PVB), if a base foreign matter is collected and waterproofing is carried out to basically reinforce the waterproof layer in a vulnerable area, a mixture of a polyvinyl butyral (PVB) After the polyvinyl butyral (PVB) liquid phase is applied, the polyvinyl butyral (PVB) waterproof sheet is subjected to a series of procedures.

In other words, waterproof sheet using polyvinyl butyral (PVB) is different from general construction method in that a mixed material of polyvinyl butyral (PVB) liquid phase and cement is applied instead of the liquid phase of EVY seal (desulfurized rubber) (PVB) waterproof sheet after applying vinyl butyl alcohol (PVB) liquid phase, the conventional method which had to wait until it hardened due to the nature of the liquid phase of the non-curable ABS seal (desulfurized rubber) In contrast, the polyvinyl butyral (PVB) liquid phase not only shortens the air significantly due to its curing properties, but also provides a lower cost than the conventional method because it is cheaper than the liquid phase of the Evi seal (desulfurized rubber) .

As a preferred embodiment of the present invention, the waterproof sheet is characterized in that polyvinyl butyral (PVB) is composed of 60 to 85% by weight.

SBS (styrene butadiene styrene) in the component selected from either SBS or PVC refers to lava, and PVC (polyvinyl chloride) generally refers to vinyl chloride in a water-soluble suspension or emulsion as a peroxide catalyst , Which is a synthetic resin belonging to the organic polymer series and mainly used for reinforcing a strong impact.

In general, polyvinyl butyral (PVB) is widely used in the production of industrial products. In incineration of the used polyvinyl butyral (PVB) scrap, many social costs and environment are greatly affected. In the present invention, In order to compensate for the disadvantages, waterproof sheets made of polyvinyl butyral (PVB) and SBS or PVC composition are made and recycled, which is environmentally friendly and can be greatly effective in saving resources and costs.

As a preferred embodiment of the present invention, the waterproof sheet is characterized in that SBS or PVC is composed of 8 to 25% by weight.

Calcium carbonate (40) requires calcium carbonate in the process of making cement, a colorless crystal that is the main component of marble and limestone, or a white solid, which is used to build houses and buildings

The reason for putting potassium carbonate in the present invention is to prevent shrinkage of the waterproof sheet.

Since a large amount of calcium carbonate harmless to the human body is contained, it is possible to produce environmentally friendly, recyclable, and environmentally pollutant-free carbon dioxide.

The waterproof sheet according to a preferred embodiment of the present invention is characterized in that the calcium carbonate is composed of 5 to 25% by weight.

The master batch (M / B) makes the color unified as labar, eliminates impact reinforcement and texture, and especially for tunnel construction, dioxin is detected during fire, so it is used to prevent detection of dioxin.

As a preferred embodiment of the present invention, the waterproof sheet is characterized in that the master batch (M / B) is composed of 2 to 5% by weight.

The results of the detection test of harmful substances (non-toxic) of the waterproof sheet using polyvinylbutylal (PVB) according to the embodiment of the composition ratio of the present invention are shown in Table 1 (FIG. 2).

KTR test result Test Items Unit Sample Results MDL Test Methods Pb mg / kg - Not detected 5 IEC 62321-5 Ed. 1.0: 2013 (AAS) CD mg / kg - Not detected 0.5 IEC 62321-5 Ed. 1.0: 2013 (AAS) Hg mg / kg - Not detected 0.5 IEC 62321-4 Ed. 1.0: 2013 (AAS) Cr (VI) mg / kg - Not detected 0.5 IEC 62321 Ed. 1.0: 2008 (UV / Vis) Total-PBBs mg / kg - Not detected - IEC 62321 Ed. 1.0: 2008 (GC / MS) Mono-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Di-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Tri-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Tetra-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Penta-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Hexa-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Hepta-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Octa-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Nona-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Deca-BB mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Total-PBDEs mg / kg - Not detected - IEC 62321 Ed. 1.0: 2008 (GC / MS) Mono-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Di-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Tri-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Tetra-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Penta-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Hexa-BDE mg / kg - Not detected 0 IEC 62321 Ed. 1.0: 2008 (GC / MS) Hepta-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Octa-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Nona-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS) Deca-BDE mg / kg - Not detected 10 IEC 62321 Ed. 1.0: 2008 (GC / MS)

In manufacturing an environmentally friendly waterproof sheet which is one of the objects of the present invention, it has been confirmed that no environmentally harmful substances are generated. When the waterproof sheet using the present polyvinylbutylal (PVB) is discarded after use, .

The results of performance tests on tensile strength and tear strength of a waterproof sheet using polyvinylbutylal (PVB) according to an embodiment of the present invention are shown in Table 2 (FIG. 3).

division Phosphorus strength The tensile strength Elongation rate Length 40.0 15.1 195.0 width 33.1 5.9 111.7 unit  N / mm N / mm ² %

Accordingly, when the waterproof sheet according to the present invention is used, it is possible to confirm that the performance of the tensile strength and the tear strength is superior to that of the prior art, but the toxic material is not detected.

Although the present invention has been shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Variations and modifications are possible.

10: Waterproof layer 20: PVB
30: component of one of SBS or PVC layer 40: calcium carbonate
50: M / B

Claims (2)

In a waterproof sheet using polyvinyl butyral (PVB)
Polyvinylbutylal (PVB) is formed by the condensation reaction of polyvinyl alcohol (polyvinyl alchol) and butylaldehyde (butyraldehyde)
The waterproof sheet comprises 60 to 85% by weight of polyvinyl butyral (PVB), 8 to 25% by weight of one component of styrene-butadiene-styrene (SBS) or polyvinyl chloride (PVC) To 25% by weight and a master batch (M / B) of 2 to 5% by weight,
And a waterproof layer protective material made of a polyethylene film is adhered on the waterproof sheet, wherein the waterproof sheet is made of polyvinyl butyral (PVB). A method for manufacturing a waterproof sheet using polyvinyl butyral (PVB)
Applying a mixed material of polyvinyl butyral (PVB) liquid phase and cement;
Applying a polyvinyl butyral (PVB) liquid phase; And
(PVB), 8-25 wt% of one component of styrene-butadiene-styrene (SBS) or polyvinyl chloride (PVC), 5-25 wt% of calcium carbonate, Attaching a waterproof sheet made of polyvinyl butyral (PVB) having a master batch (M / B) of 2 to 5% by weight and the waterproof sheet coated with a waterproof layer protective material made of a polyethylene film (PVB), wherein the waterproof sheet is formed of polyvinyl butyral (PVB).

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