KR100958884B1 - Method for waterproofing with synthetic butyl rubber mastic composition - Google Patents

Abstract

PURPOSE: A waterproofing method using a butyl synthesized rubber composition is provided to improve the construction property by using a self-adhesive construction, and to improve the heat resistance and low-temperature property. CONSTITUTION: A waterproofing method using a butyl synthesized rubber composition comprises the following steps: spraying a primer on a base material; constructing a butyl synthesized rubber mastic band to a corner unit of the base material; constructing a butyl synthetic rubber mastic waterproof sheet on the upper side of the primer; and forming a waterproof layer on the waterproof sheet. The butyl synthesized rubber mastic band is obtained by forming the butyl synthesized rubber composition into a bar-shape.

Description

{Method for waterproofing with Synthetic butyl rubber mastic composition}

The present invention relates to a waterproofing method using a butyl synthetic rubber composition, and more particularly, using a mastic composition mainly composed of butyl synthetic rubber to prepare a self-adhesive waterproof sheet and band, using the rooftop, underground Waterproof construction in a wide range of areas such as parking lots, upper and outer walls of structures, outer walls of civil engineering structures, bridges and bridges on elevated roads, tunnel exteriors, etc., with excellent self-contained room temperature construction and excellent heat resistance and low temperature characteristics It is designed to realize more stable and perfect waterproofing with excellent flowability and excellent low temperature crack resistance in winter.

In general, when rainwater or groundwater penetrates civil structures such as rooftops of rooftops, upper part of underground parking lots, underground exterior walls, subways, underground roadways, cavities, etc., the bond strength of concrete materials decreases and void cracks occur due to temperature changes. It leads to a reduction in the life of civil engineering structures. Therefore, waterproofing is a very important factor in concrete structures, waterproof construction is required for concrete structures.

Conventionally, the materials used in the waterproof construction include sheet waterproofing, coating film waterproofing, and mastic waterproofing.

First of all, the sheet waterproofing material is fused by using a heating torch at the time of construction, so the construction is very demanding and the construction time is very long, and there is a risk of burns in the construction and water leaked when the defect occurs after construction. Since it leaks in other places along with the damaged part by moving along the space, there is a disadvantage that it is impossible to find the defect point, and the whole waterproof layer needs to be reconstructed. Some self-supporting sheet waterproofing materials are easy to install at room temperature, but the elasticity of the waterproof compound This is too high a disadvantage that can not exhibit the filling and watertightness against cracks.

And as the coating film waterproofing material is sprayed and rollers, the construction is simple and the construction speed is fast. However, the hardening or drying process is required after the construction, and the air becomes considerably longer. In the case of the aqueous coating waterproofing material, there is a problem that it cannot be applied in winter. . In addition, the waterproof coating layer cured and dried after the coating waterproofing material is fixed to the adhered surface of the structure, so that if a crack occurs in the structure, the waterproof layer does not stretch along the crack and is torn, so that the crack cannot be followed and leaks occur.

In addition, the mastic waterproofing material must be applied by spreading all the waterproofing materials with manpower, so that the construction properties are not good and the thickness of the waterproofing layer is not uniform, and the construction period is prolonged and the cost increases due to the manpower construction. However, after the construction of the vertical wall in summer, the waterproofing material flows down due to the high temperature, and the thickness of the upper and lower waterproof layers is not uniform.After the construction, the waterproofing agent flows out through the pressure between the cracks of the structure and the mastic penetrates into the structure. There have been reports of problems such as pollution of vehicles inside the vehicle and contamination of walls.In case of concrete pouring and refilling after construction, the waterproofing material is pushed to one side by pressure, and the mastic waterproofing material may pop out of the protective sheet. There are disadvantages.

In addition, the existing mastic waterproofing material has a solid content of 70-85% by weight, so when the volatiles fly away after construction of the waterproofing material, the fluidity peculiar to the mastic waterproofing material disappears and hardens, resulting in very low temperature performance and traceability to structural cracking. It is weakened and there are disadvantages such as water leakage due to breakage of the waterproof layer due to winter season and structure cracks.

In order to solve the above problems, 'spray rubberized asphalt mastic waterproofing and its manufacturing method' of Korean Patent Application No. 10-2005-112153 has been proposed, but the sprayed rubberized asphalt mastic waterproofing is to be waterproofed. Expensive spraying equipment is required, and because it sprays at high temperatures, it requires heating of the material, it is difficult to waterproof narrow or complex structures that the spray construction machine cannot enter, and there is a risk of fire in the process of heating and melting the material. In addition, there is a disadvantage that not only the bad odor caused by the steam generated in the material, but also the operator can be burned.

Therefore, an object of the present invention is to solve the problems of the conventional waterproof method, by using a butyl synthetic rubber composition to propose a waterproof sheet, a band and a waterproof method, to improve the durability of the waterproof layer, improve the workability, water tightness In order to cope with the vibration of the structure through securing the crack followability and fillability.

In addition, the construction of a variety of materials on the upper portion of the butyl synthetic rubber waterproof sheet enables both exposed and non-exposed waterproof construction, as well as oil-based and aqueous, which enables close contact with the base material based on the self-adhesive butyl synthetic rubber mastic waterproof sheet. By proposing a primer, the primer to be applied according to the position of the structure, that is, the ground or underground structure, oily and aqueous, to ensure the safety of the contractor and the site.

In addition, by applying a band molded as the butyl synthetic rubber composition to the corner portion of the waterproof base material, which is the most vulnerable part during waterproof construction, it is possible to more completely waterproof construction by suppressing the lifting of the corner portion of the waterproof sheet.

In addition, using a self-adhesive butyl synthetic rubber mastic waterproof sheet to provide a waterproof method that can be used without being limited to the roof, underground parking lot, civil engineering structures, railway and road bridges, tunnels and the like.

Waterproofing method using a butyl synthetic rubber composition of the present invention for achieving the above object, the step of applying a primer on the base material,
Constructing a butyl synthetic rubber mastic band at a corner of the base substrate;
Constructing a butyl synthetic rubber mastic waterproof sheet on an upper surface of the primer;
Including the step of forming a waterproof layer on the top of the waterproof sheet,
The butyl synthetic rubber mastic band is formed by molding a butyl synthetic rubber mastic composition into a bar-shaped butyl synthetic rubber band whose cross section is an isosceles triangle. 80 to 150 °, and at least one side of the butyl synthetic rubber band is provided with a release layer,
The butyl synthetic rubber mastic waterproof sheet is a release layer is provided on the lower surface of the butyl synthetic rubber mastic layer and a protective layer is provided on the upper surface, the butyl synthetic rubber mastic layer is the sheet of the butyl synthetic rubber mastic composition It is molded in the shape, the protective layer is made of a synthetic resin film, a synthetic resin woven fabric, a synthetic resin sheet or asphalt impregnated nonwoven fabric, the release layer is made of a release paper or a release film,
The butyl synthetic rubber mastic band and butyl synthetic rubber mastic waterproof sheet are constructed after removing the release layer,
The butyl synthetic rubber mastic composition is 10-30 wt% butyl rubber, 3-20 wt% softener, 20-70 wt% inorganic filler, 8-25 wt% tackifier, 4-15 wt% modifier, and viscosity modifier It comprises 4.8 to 25% by weight,
The softener is one or two or more selected from the group consisting of dioctyl phthalate, dibutyl phthalate and diisononyl phthalate, and the inorganic filler is calcium carbonate, talc, silica, mica, clay, fly ash, bentonite and cement. One or two or more selected from the group consisting of, the tackifier is one or two or more selected from the group consisting of petroleum resin, polybutene, rosin and rosin ester, the modifier is SBS rubber (SBS), chloroprene Rubber (CR), EPDM Rubber, EPB Rubber (SBR), SB Rubber (SEBS), Ethyl Vinyl Acetate (EVA), Atactic Polypropylene (APP), Atypical Polyolefin (APAO), Polyethylene At least one selected from the group consisting of (PE) and polypropylene (PP), and the viscosity modifier is a process oil, polyethylene (PE) wax, or polypeptide. Propylene (PP) wax, amide wax, Lin seed oil, soybean oil and rice bran oil will from the group consisting of one or two or more selected,
The primer comprises 5 to 20% by weight of process oil, 15 to 40% by weight of tackifier, 2 to 10% by weight of synthetic rubber, 1 to 5% by weight of water-cured curing resin, and 30 to 77% by weight of organic solvent. The water reaction cured resin is one or two or more selected from the group consisting of toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI) and isocyanate group terminal prepolymer,
The waterproof layer is a solvent-free polyurethane coating waterproofing material, aqueous asphalt coating waterproofing material, aqueous acrylic coating waterproofing material, rubber latex coating waterproofing material, aqueous inorganic elastic coating waterproofing material, self-adhesive asphalt waterproofing sheet, the butyl synthetic rubber mastic waterproofing sheet, waterproofing sheet for exposure And one kind selected from the group consisting of an exposed polyurethane coating waterproofing material.

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As described above, according to the present invention, it is possible to be installed at room temperature without the use of a special tool, which is excellent in workability, excellent in watertightness by excellent point and adhesive strength, and waterproof by reinforcing the butyl-synthetic rubber band when constructing the corner portion. It provides the effect of significantly reducing the risk of defects.

In particular, due to the excellent heat resistance and cold resistance of the butyl synthetic rubber mastic composition itself, there are no problems such as dripping of the waterproofing material due to high temperature in summer or cracking of the waterproofing material due to low temperature in winter, and the self-filling properties of the butyl synthetic rubber mastic In addition to excellent followability to cracks, the butyl-synthetic rubber mastic composition is self-filled by pressure to provide excellent waterproofing performance even when problems such as structural cracking and vibration occur after waterproofing. do.

In addition, the use of an aqueous primer not only prevents the danger of suffocation and organic solvent poisoning of waterproof workers, but also does not include volatile organic solvents, thus providing an advantage that does not adversely affect the environment.
In addition, it is possible to install at room temperature, so that the construction is not only simple, but also complicated and difficult parts can be easily installed, and no additional curing time is required, so the subsequent process can be proceeded immediately, which greatly reduces the air. do.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The present invention proposes a self-supporting butyl synthetic rubber mastic composition having excellent waterproofness, watertightness, crack filling property and durability, and forming a waterproof sheet and a band by using the same, and using a solvent type and an aqueous primer, it is more easily waterproof. It is to allow construction and to realize more perfect waterproofing.

The present invention can be used without being limited to the rooftop of the building, underground parking lot, civil structure, railway and road bridges, tunnels and the like.

First, the butyl synthetic rubber mastic composition according to the present invention will be described.

The butyl synthetic rubber mastic composition is 10-30 wt% butyl rubber, 3-20 wt% softener, 20-70 wt% inorganic filler, 8-25 wt% tackifier, 4-15 wt% modifier, viscosity modifier 4.8-25 wt%, 0.1-5 wt% pigment and 0.1-5 wt% additive.

First of all, the butyl rubber is a kind of synthetic rubber produced at a factory in general, and has excellent viscosity and adhesiveness, and is excellent in heat resistance and cold resistance. There are various grades of the butyl rubber, but the grade is limited in the present invention. I never do that. The butyl rubber is used at 10 to 30% by weight in the mastic composition. When the amount is less than 10% by weight, the amount of the butyl rubber is too small, so that physical properties such as elasticity and elongation rate are lowered, and the filling property peculiar to butyl rubber is sufficiently sufficient. This is because there is a problem such as not being exhibited, and if it exceeds 30% by weight, the amount of use is more than necessary, so that the price rises and the price competitiveness of the product is lost.

The softener may be a plasticizer such as dioctyl phthalate, dibutyl phthalate, diisononyl phthalate, and at least one selected from the group consisting of dioctyl phthalate, dibutyl phthalate and diisononyl phthalate. It can be used in combination. The softener is used in 3 to 20% by weight in the mastic composition, when the amount is less than 3% by weight because the amount is too small, it is difficult to fully exhibit the performance as a softener, if the amount exceeds 20% by weight This is because there are too many softened physical properties of the product, and more rubber is required, causing the price to rise and the physical properties to worsen.

The inorganic filler may be used in combination with one or two or more selected from the group consisting of calcium carbonate, talc, silica, mica, clay, fly ash, bentonite and cement. The inorganic filler is used in the mastic composition 20 to 70% by weight, when the amount is less than 20% by weight because it is difficult to expect the effect of improving the compressive strength of the product and reducing the price, if the amount exceeds 70% by weight This is because there are so many that it is difficult to secure enough physical properties such as elasticity, elongation, and adhesive strength of the product.

In addition, the tackifier may be used one or two or more selected from the group consisting of petroleum resin, polybutene, rosin (rosin), rosin ester, the petroleum resin is C9, C5, C9-C5 copolymerization Resins, hydrogenated resins, and the like, and may be used alone or in combination of two or more thereof. In addition, the polybutene has various grades and does not limit any one. Since the modifier is used in the mastic composition at 8 to 25% by weight, the amount of the modifier is less than 8% by weight, because the effect as an adhesive is insufficient and it is difficult to expect sufficient physical properties such as sufficient adhesive strength. If exceeded, the usage is more than necessary, which increases the price of the product, weakening the price competitiveness.

The modifier is SBS rubber, chloroprene rubber (CR), EPDM rubber (EPDM), SBR rubber, SBS rubber (SEBS), ethyl vinyl as a material used to supplement the physical properties of butyl rubber One or two or more selected from the group consisting of acetate (EVA), atactic polypropylene (APP), amorphous polyolefin (APAO), polyethylene (PE) and polypropylene (PP) can be used. The modifier is used in 4-15% by weight in the mastic composition, if the amount is less than 4% by weight because the amount is too small to expect a modifying effect, if the amount exceeds 15% by weight is more than necessary This is because the properties of butyl rubber are difficult to exhibit, and the price of the product rises, thus weakening the price competitiveness.

The viscosity modifier may be used one or two or more selected from the group consisting of process oil, polyethylene (PE) wax, polypropylene (PP) wax, amide wax, rinsed oil, soybean oil and rice bran oil. The naphthenic, aromatic, and paraffinic oils may be used, and these may be used alone or in combination of two or more. The viscosity modifier is used in the mastic composition at 4.8 to 25% by weight, when the amount is less than 4.8% by weight because the amount is too small to be expected to effect the viscosity adjustment, if it exceeds 25% by weight This is because the amount of the product is so high that it weakens the physical properties of the product, and the amount of the product is used more than necessary, which increases the price of the product and weakens the price competitiveness.

The pigment may be inorganic pigments such as carbon black, titanium dioxide (white), red iron oxide, yellow iron oxide, iron oxide green, and organic pigments for each color, and may be used alone or in combination of two or more thereof. Pigments made with heavy metals such as chromium, cobalt, lead and mercury should not be used. The pigment is used at 0.1 to 5% by weight in the mastic composition, when the amount is less than 0.1% by weight because the amount is too small to expect a product of the desired color, when the amount exceeds 5% by weight This is because the price of the product rises more than necessary, weakening the price competitiveness.

The additives include heat stabilizers, ultraviolet stabilizers, flame retardants, varnishes, lubricants, and the like and are not intended to limit the type thereof. And the additive is appropriately adjusted according to its role, etc., so that the total amount is 0.1 to 5% by weight in the mastic composition.

The butyl synthetic rubber mastic composition made as described above is excellent in point and adhesive strength as well as excellent in watertightness, crack filling property, and the like as compared with the conventional sheet waterproofing material, coating film waterproofing material and mastic waterproofing material. It will be able to further improve the waterproof performance.

Hereinafter, a butyl synthetic rubber mastic waterproof sheet according to the present invention will be described.

The butyl synthetic rubber mastic sheet according to the present invention is formed and manufactured as the butyl synthetic rubber mastic composition described above. As shown in FIG. 1, the lower surface of the butyl synthetic rubber mastic sheet is provided with a release layer and the upper surface thereof is protected. The layer is provided is made of a waterproof sheet.

At this time, the manufacturing method of the butyl synthetic rubber mastic waterproof sheet is as follows. First, each component of the mastic composition described above is weighed and then uniformly dispersed and mixed using a kneader and a kneading roller. At this time, the order of the input of the material does not affect the physical properties of the composition is not limited. The composition thus obtained is extruded to a thickness of 0.5 to 7 mm using an extruder or a calender, and a synthetic resin film, a synthetic resin sheet, a synthetic resin woven fabric, or an asphalt-impregnated nonwoven fabric is attached to the upper portion as a waterproof surface protection layer, and a release paper or After attaching the release film to form a release layer, it is wound to a certain length to produce a sheet.

More specifically, the protective layer is a layered polypropylene film, a three-way stacked polyethylene film, a three-way stacked polypropylene film, a urethane resin sheet, a polypropylene film laminated polypropylene woven fabric, asphalt impregnated polypropylene nonwoven fabric, asphalt impregnated poly Ester nonwovens, polypropylene wovens, glass fiber wovens, polyester wovens and the like can be used.

Butyl synthetic rubber mastic waterproof sheet as described above is self-supporting, can be used as a waterproofing material for construction and civil engineering structures, more specifically, the rooftop, underground parking lot, civil engineering structures, railway and road bridges, tunnels, etc. It can be used without limitation.

Hereinafter, the butyl synthetic rubber mastic band of the present invention will be described. The butyl synthetic rubber mastic band is also molded using the butyl synthetic rubber mastic composition described above.

That is, the butyl-synthetic rubber mastic composition is molded into a bar-shaped band whose cross section is an isosceles triangle, wherein the isosceles triangle is 2 to 7 cm in length and has a vertex angle of 80 to 150 degrees. In addition, after the release layer is provided on at least one side of the butyl synthetic rubber band is to be wound to a certain length. At this time, the release layer is made of a release film and a release paper, such as the waterproof sheet, may be formed on one side or two sides, and may be formed on all three sides is not limited to the implementation.

The reason why the mastic band is formed so that the length of the equilateral side is 2 to 7 cm is because the role of corner reinforcement becomes insignificant when the length of the equilateral side is less than 2 cm, and the excess composition is used more than necessary when it exceeds 7 cm. In addition, the vertex angle is less than 80 ° or more than 150 ° because it is difficult to use as a reinforcement of the corner (usually 90 °).

Butyl synthetic rubber band as used as the corner portion of the waterproof base material, by reinforcing the corner portion once more to significantly reduce the risk of construction defects of waterproof construction.

Hereinafter will be described in detail with respect to the construction method according to the present invention. In the construction method of the present invention, as the butyl synthetic rubber mastic waterproof sheet and the band described above are used, detailed description of the butyl synthetic rubber mastic waterproof sheet and the band will be omitted.

Waterproofing method of the present invention basically, as shown in Figure 2, comprising the step of applying a primer to the base material, and the step of laminating the butyl synthetic rubber mastic waterproof sheet on the upper surface of the primer. When laminating the butyl synthetic rubber mastic waterproof sheet, it is natural to remove the lower release layer and attach it.

The primer used above will be described again below.

And if you want the non-exposed waterproofing, a protective mortar or concrete layer is constructed on top of the butyl synthetic rubber mastic waterproof sheet.

In addition, when double waterproof construction is desired, as shown in FIG. 6, a waterproof layer may be additionally installed on the upper portion of the butyl synthetic rubber mastic waterproof sheet, and in this case, when non-exposed waterproofing is desired, a protective mortar or concrete is disposed on the waterproof layer. Construct the floor.

In this case, as the waterproof layer, the waterproof material may be used according to the exposed waterproof and the non-exposed waterproof, and in the case of the exposed waterproof, the waterproof layer may be formed by laminating an exposed waterproof sheet or applying an exposed polyurethane coating waterproofing material. And if the non-exposure waterproofing is desired, the waterproof layer is a solvent-free polyurethane coating waterproofing, aqueous asphalt coating waterproofing, aqueous acrylic coating waterproofing, rubber latex-based coating waterproofing, aqueous inorganic elastic coating waterproofing, self-adhesive asphalt waterproofing sheet and butyl synthetic according to the present invention The waterproof layer may be formed using one selected from the group consisting of rubber mastic waterproof sheets. However, the product containing more than 3% of solvent as the waterproofing film should not be used.

Since the coating method of the various coating waterproofing material and the lamination method of the waterproof sheet are known by many prior art, detailed description thereof will be omitted.

And as shown in Figure 4 and 8, the connection portion of the waterproof sheet can be constructed by overlapping the neighboring waterproof sheet to each other in a self-supporting manner within the range of 50 ~ 100mm. In addition, as shown in Figures 5 and 9, the neighboring waterproof sheets may be constructed by attaching the reinforcing sheet to the upper surface after the construction so as to contact the side. In this case, the reinforcing sheet may be a nonwoven fabric, a woven fabric, a film, a resin sheet, etc. are formed as a reinforcing layer as a reinforcing layer on top of an adhesive layer made of butyl synthetic rubber or asphalt, and the width thereof is in the range of 100 to 200 mm. It is preferable to use. The butyl synthetic rubber mastic waterproof sheet of the present invention is self-supporting, and solves the waterproofing defects caused by the poor adhesion between the conventional waterproof sheets.

On the other hand, when the base material has a corner portion, that is, when waterproofing the corner portion, as shown in Figures 3 and 7, after the application of the primer, the corner portion of the base substrate, that is to the outside of the primer, to the butyl A synthetic rubber band is constructed and a butyl synthetic rubber mastic waterproof sheet is laminated as described above. At this time, the construction of the butyl synthetic rubber band after the removal of the release layer is a natural construction, and the two sides corresponding to the equilateral side of the three sides of the butyl synthetic rubber band by construction so as to contact the base material, precisely the primer, It is to solve the corner lifting phenomenon which is the most problematic in the conventional sheet-like waterproofing material.

In addition, although not separately described, it is a matter of course that a separate protective pressing layer may be formed on the uppermost layer after completion of the waterproof construction.

Hereinafter, the primers used in the present invention will be described.

As a primer applied to the upper portion of the base substrate, a solvent type or an aqueous mold may be used. By using a solvent type primer on a base material made of concrete, the water present in the concrete and the water reaction cured resin of the solvent type primer By making it react with each other and hardening | curing, it is for preventing the bad adhesion of the primer by moisture.

In addition, it is more preferable to apply an aqueous primer to underground structures, which prevents accidents such as suffocation of workers and prevents poor adhesion of primers due to moisture, so that the butyl synthetic rubber mastic waterproof sheet is integrated with the adhered surface. It is to make it possible.

First, the solvent-type primer is intended to induce the integration of the butyl synthetic rubber mastic waterproof sheet and the base material, preferably 5 to 20% by weight of the process oil, 15 to 40% by weight of the tackifier, synthetic rubber 2 What is contained is -10 weight%, the water reaction hardening resin 1-5 weight%, and the organic solvent 30-77 weight%.

At this time, the process oil is naphthenic, aromatic, paraffinic oil and can be used alone or in combination of two or more, the tackifier is a group consisting of petroleum resin, polybutene, rosin (rosin) and rosin ester One or more selected ones can be used. In addition, the petroleum resin may be C9-based, C5-based, C9-C5-based copolymer resins, hydrogenated resins and the like, can be used alone or in combination of two or more, the polybutene does not limit the grade.

In addition, the synthetic rubber may be used such as SBS (SBS) rubber, SBS (SEBS) rubber, butyl rubber, chloroprene (CR) rubber, etc. may be used alone or in combination of two or more kinds. Toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI), an isocyanate group terminal prepolymer, etc. may be used as the moisture reaction curable resin, and may be used alone or in combination of two or more thereof. Ethyl acetate, acetone, methyl ethyl ketone, toluene, xylene, industrial solvents 1 to 5, etc. can be used, and can be used individually or in combination of 2 or more types.

In the method for preparing the solvent-type primer, the synthetic rubber is uniformly dispersed by adding and stirring the organic rubber among the materials weighed by each compound, and then the tackifier and the process oil are uniformly dispersed by stirring and uniformly dispersing thereafter, followed by a water reaction. When the cured resin is added, stirred and uniformly dispersed to complete, the reason for limiting the blending ratio of each composition as described above is that when the blending ratio of the process oil is less than 5% by weight, the dry coating film is too hard to be broken by impact. There is a risk of peeling, if it exceeds 20% by weight, there is a problem that the dry coating film is too wet to exhibit sufficient adhesive strength, if the blending ratio of the tackifier is less than 15% by weight, it is difficult to secure sufficient adhesive strength, solid content Low, there is a problem that the thickness of the coating film can not be sufficiently secured by one application, and if it exceeds 40% by weight There is a problem that the price of the product rises more than necessary to weaken the price competitiveness, if the compounding ratio of the synthetic rubber is less than 2% by weight, there is a problem that it is difficult to expect a sufficient modification effect of the rubber and if the amount exceeds 10% by weight There is a problem that the price of the product rises more than this necessary to weaken the price competitiveness, if the moisture-reaction cured resin is less than 1% by weight, its amount is too small to react sufficiently with the water on the surface of the waterproof sphere, adhesion and adhesion There is a problem that can not be fully exhibited and if the amount exceeds 5% by weight, the amount of use is more than necessary, the price of the product rises, the price competitiveness is weakened. If the organic solvent is less than 30% by weight, the solid content is too high The viscosity of the is increased, which causes a problem of poor adhesion due to insufficient penetration into the sphere. If the content exceeds 77% by weight, the solid content is low, and there is a problem in that the thickness of the coating film cannot be sufficiently secured by one application.

In addition, the aqueous primer is also to induce the integration of the butyl synthetic rubber mastic waterproof sheet and the base material, 5 to 25% by weight process oil, 13 to 45% by weight tackifier, 2 to 10% by weight rubber latex, acrylic It comprises 10 to 30% by weight of the emulsion, 1 to 5% by weight of the emulsifier and 35 to 69% by weight of water.

In this case, the process oil and the tackifier may be the same as those used in the solvent-type primer, and the rubber latex may be used as SBR latex, natural rubber latex, chloroprene rubber latex, butyl rubber latex, and the like. Or it can be used in combination of 2 or more types, the acrylic emulsion may be used as an acrylic resin emulsion having a glass transition temperature of -20 ~ 50 ℃, the emulsifiers are cationic, anionic, nonionic, single or two It can be used in combination above.

The reason why the aqueous primer is prepared as the above-described blending ratio is that when the process oil is less than 5% by weight, the dry coating may be too hard to be broken or peeled off by impact. If the tackifier is less than 13% by weight, it is difficult to secure sufficient adhesive strength, and there is a problem that the thickness of the coating film cannot be sufficiently secured by one application because the solid content is low and 45% by weight. If the amount is more than necessary, the price of the product rises due to the increase in price, and the price competitiveness is weakened. If the rubber latex is less than 2% by weight, the amount is too small, so it is difficult to expect a rubber modification effect of the dry coating. If the amount exceeds 10% by weight, the amount of use is more than necessary and the price of the product increases. It has a problem that the price competitiveness is weakened, the acrylic emulsion is less than 10% by weight, the strength and hardness is weak, there is a problem that it is difficult to exert sufficient adhesive force, and if the amount exceeds 30% by weight, the amount of use of the product is more than necessary This raises a problem that the price competitiveness is weakened. If the emulsifier is less than 1% by weight, the amount of the emulsifier is too small to emulsify the product, and the emulsified product also has a problem of poor storage stability. There is a problem that the price of the product rises more than necessary to weaken the price competitiveness, and if the water is less than 35% by weight, the solid content of the product is high, the viscosity is high, and thus, it is difficult to penetrate the surface of the waterproof sphere, so that sufficient adhesion is expected. If there is a problem that is difficult to do and exceeds 69% by weight, the solid content is low, so that This is because the problem can not be secured to enough.

Hereinafter, an embodiment of the present invention will be described.

Example 1

A butyl synthetic rubber mastic composition was prepared as a compounding ratio as shown in Table 1 below.

Compounding ratio according to Example 1 Material name Compounding ratio (% by weight) Remarks Butyl Synthetic Rubber 15 1675 N Softener 7 DOP Mineral filler 55 Calcium Carbonate (325 Mesh) Tackifier
4 Polybutene 8 Liquid Polyisobutylene Modifier 4 SBR Viscosity Modifier 5 Process oil (aromatic) Pigment 1.5 Carbon black

The results of measuring physical properties of the composition according to Example 1 were as shown in Table 2 below.

Physical property measurement result of Example 1 Item Test condition and unit Property Remarks color - black Visual inspection importance 25 ℃ 1.42 Solid hydrometer Heat resistance More than 100 Thermostat Cold resistance -20 ° C, 180 ° No crack Constant temperature freezer Elongation 200 mm / min,% More than 600 Tensile testing machine Trespassing 25 ℃, 1 / 10mm 80 Penetration tester

As shown in Table 2, it was confirmed that the butyl synthetic rubber mastic composition according to the present invention has excellent physical properties.

Example 2

The butyl synthetic rubber mastic composition prepared in Example 1 was extruded in the form of a sheet having a thickness of 1.5 mm and a width of 1020 mm with an extruder. A rolled butyl synthetic rubber mastic waterproof sheet was prepared.

Physical properties of the butyl synthetic rubber mastic waterproof sheet according to Example 2 were as shown in Table 3 below.

Physical property measurement result of Example 2 Item Test condition and unit Property Remarks width mm 1020 Length m 10.2 thickness mm 1.5 The tensile strength N / mm 5 Universal Tensile Testing Machine
Tear strength N 3 Adhesion strength N / mm One Elongation % 500

As can be seen in Table 3, it was confirmed that the strength and elongation of the butyl synthetic rubber mastic waterproof sheet according to the present invention.

Example 3

A solvent type liquid primer was prepared as a compounding ratio as shown in Table 4 below.

Compounding ratio of Example 3 Material name Compounding ratio (% by weight) Remarks Process oil 10 Naphthenic oils Tackifier 25 C5-C9 copolymer oil resin Synthetic rubber 5 SBS Moisture Reaction Curing Resin 3 MDI solvent
27 Toluene 30 Xylene

The results of measuring physical properties of Example 3 were as shown in Table 5 below.

Physical property measurement result of Example 3 Item Test condition and unit Property Remarks Constellation Pale yellow transparent liquid Visual observation Viscosity 25 ℃, cps 300 A tachometer importance 25 ℃ 0.92 Liquid hydrometer Solid content 105 ° C, 3hr,% 44 Dry oven Drying time 25 ℃, min 10 Applicator (200 μm)
Curing and Drying Time 25 ℃, min 180

As can be seen in Table 5, the solvent-type liquid primer according to the present invention was confirmed to have excellent physical properties.

Example 4

An aqueous liquid primer was prepared as a compounding ratio as shown in Table 6 below.

Compounding ratio of Example 4 Material name Compounding ratio (% by weight) Remarks Process oil 7 Naphthenic oils Tackifier 25 C5 petroleum resin Rubber Latex 3 SBR Latex Emulsifier 2 Nonionic Acrylic emulsion 15 Anionic emulsion water 48 -

The results of measuring physical properties of Example 4 were as shown in Table 7 below.

Physical property measurement result of Example 4 Item Test condition and unit Property Remarks Constellation - Milky suspension Visual observation Viscosity 25 ℃, cps 200 A tachometer importance 25 ℃ 0.97 Liquid hydrometer Solid content 105 ° C, 3hr,% 47 Dry oven Drying time 25 ℃, min 15 Applicator (200 μm)
Curing and Drying Time 25 ℃, min 210

As can be seen in Table 7, the aqueous liquid primer according to the present invention was confirmed to have excellent physical properties.

Example 5

The butyl synthetic rubber mastic composition of Example 1 was extruded by an extruder to prepare a band having an isosceles triangle with short sides, so that two sides of an equilateral side had a length of 2 cm and a vertex angle of 90 °.

Physical properties of the butyl synthetic rubber band according to Example 5 were as shown in Table 8.

Physical property measurement result of Example 5 Item Test condition and unit Property Remarks Sectional shape - Isosceles right triangle Visual observation Angle - 90 Protractor Height mm 15-20 - Length m 5.1 - color - black Visual observation Adhesion strength N / mm One Tensile testing machine

As described above, the present invention has been described with reference to the above embodiments, but the scope of the present invention is not limited by the above embodiments, and various modifications can be made without departing from the scope and spirit of the present invention. Of course.

1 is a schematic configuration diagram of a butyl synthetic rubber mastic sheet according to the present invention.

Figure 2 is a schematic cross-sectional view waterproof construction according to an embodiment of the present invention.

Figure 3 is a schematic waterproof cross-sectional view of the corner portion according to an embodiment of the present invention.

4 is a cross-sectional view of the overlapping construction of the connecting portion according to an embodiment of the present invention.

Figure 5 is a cross-sectional view of the reinforcing sheet construction of the connection portion according to an embodiment of the present invention.

Figure 6 is a schematic cross-sectional view waterproof construction according to another embodiment of the present invention.

Figure 7 is a schematic cross-sectional waterproof construction of the corner portion according to another embodiment of the present invention.

8 is an overlapping cross-sectional view of the connecting portion according to another embodiment of the present invention.

9 is a cross-sectional view of the reinforcing sheet construction of the connection portion according to another embodiment of the present invention.

Claims (14)

Applying a primer to the base material; Constructing a butyl synthetic rubber mastic band at a corner of the base substrate; Constructing a butyl synthetic rubber mastic waterproof sheet on an upper surface of the primer; Including the step of forming a waterproof layer on the top of the waterproof sheet, The butyl synthetic rubber mastic band is formed by molding a butyl synthetic rubber mastic composition into a bar-shaped butyl synthetic rubber band whose cross section is an isosceles triangle, wherein the isosceles triangle has an equilateral length of 2 to 7 cm and a vertex angle. 80 to 150 °, and at least one side of the butyl synthetic rubber band is provided with a release layer, The butyl synthetic rubber mastic waterproof sheet is a release layer is provided on the lower surface of the butyl synthetic rubber mastic layer and a protective layer is provided on the upper surface, the butyl synthetic rubber mastic layer is the sheet of the butyl synthetic rubber mastic composition It is molded in the shape, the protective layer is made of a synthetic resin film, a synthetic resin woven fabric, a synthetic resin sheet or asphalt impregnated nonwoven fabric, the release layer is made of a release paper or a release film, The butyl synthetic rubber mastic band and butyl synthetic rubber mastic waterproof sheet are constructed after removing the release layer, The butyl synthetic rubber mastic composition is 10-30 wt% butyl rubber, 3-20 wt% softener, 20-70 wt% inorganic filler, 8-25 wt% tackifier, 4-15 wt% modifier, and viscosity modifier It comprises 4.8 to 25% by weight, The softener is one or two or more selected from the group consisting of dioctyl phthalate, dibutyl phthalate and diisononyl phthalate, and the inorganic filler is calcium carbonate, talc, silica, mica, clay, fly ash, bentonite and cement. One or two or more selected from the group consisting of, the tackifier is one or two or more selected from the group consisting of petroleum resin, polybutene, rosin and rosin ester, the modifier is SBS rubber (SBS), chloroprene Rubber (CR), EPDM Rubber, EPB Rubber (SBR), SB Rubber (SEBS), Ethyl Vinyl Acetate (EVA), Atactic Polypropylene (APP), Atypical Polyolefin (APAO), Polyethylene At least one selected from the group consisting of (PE) and polypropylene (PP), and the viscosity modifier is a process oil, polyethylene (PE) wax, or polypeptide. Propylene (PP) wax, amide wax, Lin seed oil, soybean oil and rice bran oil will from the group consisting of one or two or more selected, The primer comprises 5 to 20% by weight of process oil, 15 to 40% by weight of tackifier, 2 to 10% by weight of synthetic rubber, 1 to 5% by weight of water-cured curing resin, and 30 to 77% by weight of organic solvent. The water reaction cured resin is one or two or more selected from the group consisting of toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI) and isocyanate group terminal prepolymer, The waterproof layer is a solvent-free polyurethane coating waterproofing material, aqueous asphalt coating waterproofing material, aqueous acrylic coating waterproofing material, rubber latex coating waterproofing material, aqueous inorganic elastic coating waterproofing material, self-adhesive asphalt waterproofing sheet, the butyl synthetic rubber mastic waterproofing sheet, waterproofing sheet for exposure And waterproof coating method using a butyl synthetic rubber composition, characterized in that it is formed of one selected from the group consisting of polyurethane coating film waterproofing material for exposure. The method of claim 1, After forming a waterproof layer on top of the waterproof sheet, Waterproofing method using a butyl synthetic rubber composition, characterized in that it further comprises the step of constructing a protective mortar or concrete layer thereon. delete delete delete delete delete delete delete delete delete delete delete delete

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