KR102139244B1 - Waterproof sheet - Google Patents

Abstract

The present invention relates to a waterproof sheet in which a waterproof effect can be enhanced and flatness of the sheet can be improved through a multi-layered structure of an aluminum material. The waterproof sheet of the present invention includes: an upper waterproofing layer of which an upper surface is coated with a coating material; a central basic material arranged on a lower surface of the upper waterproofing layer; a lower waterproofing layer arranged on a lower surface of the central basic material; and an adhesive layer arranged on a lower surface of the lower waterproofing layer, wherein the upper waterproofing layer, the lower waterproofing layer, or both the upper waterproofing layer and the lower waterproofing layer are made of aluminum or aluminum alloys.

Description

Waterproof sheet with improved floor plan{WATERPROOF SHEET}

The present invention relates to a waterproof sheet provided for waterproofing a concrete structure, and more particularly, to a waterproof sheet having an improved waterproof effect as well as a planarity of the sheet through a multi-layered aluminum structure.

When rainwater or groundwater infiltrate civil structures such as rooftops of buildings, upper parts of underground parking lots, underground outer walls, subways, underground roadways, and common wards, the bonding strength of concrete materials decreases and void cracks occur due to temperature changes, resulting in construction and civil engineering structures Waterproofing is a very important factor in concrete structures, as the life of the product is reduced.

In particular, the most effective means for waterproofing a concrete structure is a waterproof sheet. The waterproof sheet includes a liquid coating curing type, etc., as the construction is completed simply by attaching the pre-made sheet to the part to be waterproof. It is advantageous in terms of ease of manufacture and convenience of construction compared to other waterproofing methods.

As a conventional technique for a waterproof sheet, there is a registered patent No. 10-0804677 (February 12, 2008), and the above-described conventional technique not only waterproofs the roof of a building or the parking lot, but also prevents heat insulation, condensation prevention, and sound insulation. A self-contained composite waterproof sheet is proposed.

In particular, the prior art consists of a surface protective film layer excellent in elongation, tensile strength, abrasion resistance, and chemical resistance, a self-adhesive self-adhesive synthetic rubber layer, and a non-woven fabric layer, and impregnated with an inorganic elastic coating waterproofing layer on the non-woven fabric layer to protect the surface. And it has the advantage of being fully integrated without sunblock and seamless, and the roof waterproof layer can be easily used for repair work as well as new construction work.

However, the prior art including the prior art has not provided a special solution to the issue related to the improvement of the flatness of the waterproof sheet, so there is a problem in the lifting problem of the waterproof sheet or the surface texture.

In addition, the need to provide a method for further improving the waterproof effect in the conventional waterproof sheet is also reconsidered.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a waterproof sheet having an improved waterproof effect through a multi-layer structure made of aluminum and an improved planarity of the sheet.

In addition, the object of the present invention is to provide a structure capable of strengthening rigidity, reducing weight, and insulating the core base material and preventing water from accumulating inside the sheet during invasion.

The present invention having the above configuration and features is an upper waterproof layer coated with a coating material on the upper surface, a central substrate disposed on a lower surface of the upper waterproof layer, a lower waterproof layer disposed on a lower surface of the central substrate, and disposed on a lower surface of the lower waterproof layer It comprises an adhesive layer, the upper waterproof layer, the lower waterproof layer, or both are characterized by consisting of aluminum or an aluminum alloy.

In addition, it is characterized in that the upper waterproof layer, the lower waterproof layer or both can be made of a multi-layer structure.

The central base material may be formed in a honeycomb structure.

The present invention having the above configuration and features comprises an upper waterproof layer and a lower waterproof layer made of aluminum, and furthermore, by adopting a multi-layer structure for each waterproof layer, the waterproof effect is improved and the plan of the sheet is improved.

In addition, by introducing a honeycomb structure to the base material, it has the effect of strengthening the rigidity, reducing the weight, providing an insulating effect, and preventing water from accumulating inside the sheet during invasion.

1 is a view showing the structure of a waterproof sheet according to a first embodiment of the present invention.
2 is a view showing the structure of a waterproof sheet according to a second embodiment of the present invention.

The present invention can be applied to a variety of changes and can have a variety of forms, the implementation (態樣, aspect) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, it should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (sun, 態樣, aspect) (or embodiment), and is not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as ~include~ or ~consist of~ are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Also, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

In addition, ~ 1 ~, ~ 2 ~, etc. described in this specification will only refer to different components, and are not limited to the order in which they are manufactured, and the name in the detailed description and claims of the invention This may not match.

Hereinafter, a waterproof sheet according to the present invention (hereinafter referred to as the present sheet) will be described in detail with reference to the accompanying drawings.

This sheet relates to a waterproof sheet with improved plan view, and is largely composed of an upper waterproof layer 200, a central base material 300, a lower waterproof layer 210, and an adhesive layer 400. In addition, the sheet may further include a flexible film (not shown) after the adhesive layer 400.

Specifically, for each configuration, first, the upper waterproof layer 200 is coated with a coating material 100 on the upper surface. The coating material 100 may be a mixture of amino-modified epoxy resin, nitrocellulose resin, fluorine resin, particles, toluene, methyl ethyl ketone, ethyl cellulsolve, and additives. The coating material 100 may be coated with a thickness of 0.25 to 0.35mm.

In addition, the upper waterproof layer 200, the lower waterproof layer 210, or both 200, 210 may be made of aluminum or an aluminum alloy to have a waterproof effect. Here, aluminum is a material having a waterproof effect in nature. In particular, the aluminum component improves the flatness of the sheet by adding flexibility to the sheet. That is, the upper waterproof layer 200 and the lower waterproof layer 210 having an aluminum component improve the lifting problem of the sheet and the surface texture deterioration problem.

In addition, the upper waterproof layer 200 or the lower waterproof layer 210 may be made of a multi-layer structure. For example, as shown in FIG. 2, the lower waterproof layers 210 and 210' may be formed in a double structure. The waterproof layer of the multi-layered structure improves the waterproof effect by preventing water leakage in the other layer even if water leakage occurs due to damage to one layer, and effectively prevents the floor plan from being deteriorated due to damage to one layer. The waterproof layer of the multi-layer structure is not particularly limited with respect to the number of layers, but is preferably made of a double structure in consideration of sheet weight, manufacturing cost, and the like.

Next, the center base material 300 is disposed between the upper waterproof layer 200 and the lower waterproof layer 210.

In addition, the center substrate 300 may be made of a PET film to increase the rigidity. The reason is that the upper waterproof layer 200 and the lower waterproof layer 210 are made of aluminum material to have flexibility, and thus have a weak rigidity. The central base material 300 composed of a PET film compensates for the above disadvantages by increasing the rigidity of the sheet. Is to do.

In the above, the PET film may be polyethylene terephthalate.

In addition, the center substrate 300 may be formed of a honeycomb structure, and a support of the honeycomb structure may be provided between the upper waterproof layer 200 and the lower waterproof layer 210. The honeycomb structure has an effect of reducing the weight while increasing the rigidity. In addition, the honeycomb structure has an air layer formed therebetween, and is effective for heat insulation. In addition, the honeycomb structure may also serve as a passage through which water flows when the upper waterproof layer 200 is damaged and leaks, thereby preventing water from accumulating inside the sheet.

Next, the adhesive layer 400 is disposed on the lower surface of the lower waterproof layer 210, and serves to attach the sheet to the attachment surface (concrete surface).

The adhesive layer 400 may be a mixture of an acrylic copolymer, a tagifier, a decabromodiphenyl ethane (DBDPE), an antimony trioxide, a dispersing agent, and a solvent. In addition, the adhesive layer 400 may further include an acrylic adhesive having excellent durability.

The above-mentioned sheet can be used for various purposes such as indoor interior, toilet interior waterproofing, roof waterproofing, equipment piping, indoor and outdoor tanks, air conditioning and heating equipment piping, and flower beds.

Next, the construction method (hereafter, this method) of this sheet to which this sheet is attached to the attachment surface will be described.

First, the construction conditions will be described.

Construction temperature should be over 5℃ and there should be no snowfall. In addition, the attachment surface (concrete surface) should be free of foreign substances such as dust, oil, and moisture, and there should be no cracks or groove breakage. In addition, the adhesion surface should be sufficiently dried to a water content of 8% or less.

The waterproof sheet according to an embodiment of the present invention is commonly applied to construction, civil engineering, and other structures, but prior to construction, after determining the most suitable construction method for the structure, it satisfies the individual special conditions that are the object of construction and However, it should be constructed so that the performance of this sheet can be exhibited.

Again, the method comprises a base treatment step of removing foreign substances on the attachment surface 600 and a sheet construction step of attaching and constructing the sheet on the attachment surface 600.

In more detail, the method comprises a base treatment step, a reinforcing paste step, a sheet construction step, an adhesion step between the attachment surface and the sheet, a finishing step, and a protective mortar pouring step.

In addition, the method may further include a primer application step after applying the primer 500 to increase the adhesion of the sheet by applying the primer 500.

Hereinafter, each step of the method will be described in detail in a modified manner.

1. not processing steps

The water content of the concrete and the construction surface is as small as possible (water content of 8% or less), and is cured and cured sufficiently.

The base of concrete and mortar is constructed after smoothing work, removing foreign matter (sand, dust, oil, etc.) from the construction surface (adhesive surface) so that there is no protruding place.

On the edge surface, make a 30~50mm R surface or a reduction surface with a reinforcing seal, cement mortar or triangular face wood to facilitate sheet adhesion.

The base of the metal plate and the insulating material should have no joints and no gaps or gaps.

Before construction, where the cracks on the bottom surface occur, cut and cure with filling mortar.

The expansion joint part is filled with a JOINT part through a back up material and then closed using a reinforcing seal.

2. Primer application step

Primer 500 uses water-soluble epoxy polyamide-based, deionized water content 60~65%, epichlorohydrin-bisphenol a resin content 20-30%, additive content 1~ It is characterized in that it is a mixture of one or two or more selected from 5%. The primer 500 allows the waterproof sheet to adhere better to the attachment surface.

Primers should be completely removed from dirt, cement dust, oil and other contaminants on the floor and painted in a dry condition.

The primer is applied with a brush or roller on the concrete structure and the base surface after the preparation of the floor surface has been completed.

Before use, mix the subject and the curing agent in the specified proportions, and use it with sufficient stirring.

The amount of primer applied varies depending on the structure and condition of the road surface, but after it is applied evenly to the floor surface at about 0.4 L/m 2, it is sufficiently dried.

After applying the primer, it is recommended to avoid rain or to avoid construction after leaving for a long time.

In an airtight, humid environment, curing will be delayed, so moisture must be completely removed and sufficient, and stored at room temperature above 5℃ to prevent freezing of the paint.

3. Reinforcement paste step

Since the life of the waterproof layer can be effectively extended by reinforcing the weakness of the waterproof layer in construction, vibrations, corners, joint roof drains, pipe circumference, etc. should be attached with a width of 200 mm for the reinforcement tape width.

4. Construction stage of waterproof sheet

The waterproof sheet construction temperature should be 5℃ or higher.

Before construction, cut the sheet by grasping the direction and length and width of the construction site.

The adhesive layer of the waterproof sheet is excellent in adhesion, and the lower release film is peeled off little by little, so that it is evenly adhered to the attachment surface. At this time, care must be taken not to introduce air when the attachment surface and the sheet are adhered.

After construction, repeat the pushing operation from the center to both ends with a rubber roller so that no air remains between the seat and the attachment surface.

5. Adhesion steps

The joint of the waterproof sheet should be carefully constructed as the core method of the waterproof layer by the overlap joint method.

The overlapping width in the width direction is 10 cm or more, and the lower release film is peeled off and attached to the upper film line.

The overlapping width in the longitudinal direction is 15 cm or more, and the lower release film is peeled off and directly adhered to the upper portion.

The joints are repeatedly roller-worked so that the ends do not float.

In order to increase safety, the joints are constructed from a low angle perpendicular to the drainage direction.

6. Finishing work steps

Finishing after waterproof sheet construction is very important, so use a reinforcing seal to completely close the vulnerable areas such as corners, coaters, and drain circumference.

It is effective to make a reinforcement layer between the sheet and the protective layer when there is a risk of cracks or damage to the waterproof layer or the insulating material due to the movement caused by the contraction and expansion of the protective layer.

7. Protective mortar pouring step

Immediately after the construction of the sheet and insulation layer, 30 mm or more of protective concrete is poured.

On the other hand, since the adhesiveness issue of the waterproof sheet has a great influence on the construction quality, the residual stress of the adhesive layer 400 is removed to suppress problems such as excitation and cracking due to the external environment such as thermal expansion and bending. Furthermore, there is a need to solve the problem of peeling due to a stress difference between the adhesive layer 400 and the lower waterproof layer 210.

In one embodiment that can solve the above problem, the sheet is an intermediate layer (not shown) provided between the adhesive layer 400 and the lower waterproof layer 210, and a heating layer (not shown) provided between the intermediate layer and the adhesive layer 400. It may be characterized in that it may further include.

In the above, the adhesive layer 400 is softened in a first temperature range, the intermediate layer is softened in a second temperature range exceeding the first temperature range, and the lower waterproof layer 210 is a third temperature range exceeding the second temperature range And softened, and the heating layer is configured to generate heat to the minimum value in the second temperature range.

More specifically, the adhesive layer 400 may include polybutyl acrylate (PBA) and polymethyl methacrylate (PMMA). The thickness of the adhesive layer 400 is preferably 0.020mm to 0.150mm in order to minimize the softening difference according to the temperature gradient.

For example, the adhesive layer 400 may be polybutyl acrylate and polymethyl methacrylate thermally impregnated. The range of the first temperature that is the softening temperature of the adhesive layer 400 is 90 ~ 100 ℃.

Next, the intermediate layer may include 200 parts by weight of carboxylate acrylic copolymer, compared to 100 parts by weight of cellulose acetate butyrate. If the weight ratio is out of the above, the adhesive strength between the adhesive layer 400 and the lower waterproof layer 210 is insufficient, which may cause a problem of peeling of the film. The second temperature range, which is the softening temperature of the intermediate layer, is 150 to 160°C.

In addition, the lower waterproof layer 210 may further include polymethylphenylsiloxane. If the polymethylphenyl siloic acid is contained too little, the softening temperature may decrease and may be softened by the heating of the heating layer. do. It is preferable that the polymethylphenylsiloxane is 5 to 20% by weight of the total weight of the lower waterproof layer.

The third temperature range, which is the softening temperature of the lower waterproof layer, is 650° C. or higher, and is not softened by heat of the heating layer, so that strong surface protection performance can be provided.

Next, the heating layer may be used as long as it generates heat by application of electricity, and it is sufficient if it is heated to the minimum value of the second temperature, which is the softening temperature range of the intermediate layer. In a preferred embodiment, the exothermic temperature of the exothermic layer is 150° C., the minimum value of the second temperature in the above example, and the exothermic layer may include polyacetylene and iodine, and electrons flow in a conjugated double bond state. There is no gap, but since the gap can be widened by mixing heterogeneous small molecules like iodine, electrons flow and heat is generated by electric resistance when electricity is applied.

The above-described coating film has a residual stress of the adhesive layer 400 in a situation in which residual stresses such as compressive stress and tensile stress may be generated due to factors such as a difference between a protection object and a thermal expansion coefficient, a shape of a protection object, and bending due to external force. The adhesive layer 400 is removed, and the adhesive layer 400 is completely softened, the intermediate layer is partially softened, and the lower waterproof layer 210 is not softened, especially when the heating layer is heated, so that the residual stress of the adhesive layer 400 is completely removed. The intermediate layer has a low degree of softening, and thus serves as a bridge between the adhesive layer 400 and the lower waterproof layer 210. That is, it is possible to effectively disperse and mitigate the residual stress of the sheet while maintaining the physical and chemical properties of the lower waterproof layer 210.

The present invention described above with reference to the accompanying drawings can be variously modified and changed by a person skilled in the art, and such modifications and variations should be interpreted as being included in the scope of the present invention.

100: coating material
200: upper waterproof layer
210, 210': lower waterproof layer
300: central substrate
400: adhesive layer
500: primer
600: mounting surface

Claims (4)

The upper waterproof layer is coated on the top surface with a coating material;
A central base material disposed on a lower surface of the upper waterproof layer;
A lower waterproof layer disposed on a lower surface of the central substrate; And
An adhesive layer disposed on a lower surface of the lower waterproof layer;
Including,
The upper waterproof layer, the lower waterproof layer or both are made of aluminum or aluminum alloy,
Further comprising an intermediate layer provided between the adhesive layer and the lower waterproof layer, and a heating layer provided between the intermediate layer and the adhesive layer,
The adhesive layer is softened in the first temperature range,
The intermediate layer is softened in a second temperature range exceeding the first temperature range,
The lower waterproof layer is softened in a third temperature range exceeding the second temperature range,
The heating layer is heated to the minimum value of the second temperature range,
The adhesive layer includes polybutyl acrylate and polymethyl methacrylate,
The intermediate layer comprises 200 parts by weight of carboxylate acrylic copolymer, compared to 100 parts by weight of cellulose acetate butyrate,
The lower waterproof layer is a waterproof sheet comprising a polymethylphenylsiloxane.
The method according to claim 1,
The waterproof sheet, characterized in that the upper waterproof layer, the lower waterproof layer or both are made of a multi-layer structure.
The method according to claim 1,
The central substrate is a waterproof sheet, characterized in that formed in a honeycomb structure.
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