KR100593460B1 - Process for forming complex waterproof and anticorrosive layers by using water-system coating and woven fabric sheet - Google Patents

Abstract

The present invention relates to a composite waterproofing and anticorrosive method using an aqueous coating and a fiber sheet, using a water-based paint containing at least one selected from the group consisting of hydrocarbon-based resins, rosin and rosin ester modified resin primer on the waterproof base surface Forming a layer (S1); Attaching a woven fiber sheet having a hole formed on the primer layer, and connecting a joint of each fiber sheet with a reinforcing tape to form a fiber sheet layer (S2); Sequentially forming an elastic coating layer and an inorganic thermal insulation (insulation) coating layer on the surface of the fiber sheet layer (S3 and S4); And forming a wear resistant flame retardant coating layer using an aqueous paint containing a flame retardant and an acrylic resin on the surface of the thermal insulation (insulation) coating layer (S5).

Waterproof, anticorrosive coating, waterborne coating, fiber sheet, heat insulation (insulation) coating layer, flame retardant coating layer

Description

Process for forming complex waterproof and anticorrosive layers by using water-system coating and woven fabric sheet

1 is a schematic diagram showing a cross-sectional configuration of a composite waterproof and anticorrosive structure formed in accordance with the present invention.

2 is a perspective view schematically showing the laminated structure of the composite waterproof and anticorrosive structure formed in accordance with the present invention step by step.

The present invention relates to a composite waterproofing and anticorrosive method using an aqueous coating and a fiber sheet, and more particularly, to form a primer layer on the waterproof base surface and then to form a fiber sheet layer connecting the joint of the fiber sheet with a reinforcing tape On the surface of the fibrous sheet layer, an elastic coating layer, an inorganic insulating (insulation) coating layer, and a flame retardant coating layer are sequentially formed, thereby providing excellent thermal insulation (flame insulation) and flame retardancy, and a matrix due to the fiber sheet layer serving as a central reinforcing material. The present invention relates to a composite waterproofing and corrosion protection method with improved resistance, cracking, and moisture resistance and durability.

It is common to form a waterproof or anticorrosion coating on the surface of roofs, outer walls, tunnels, basements, etc. of various buildings. In addition, an anticorrosive coating film is formed on a ship or a steel structure. The waterproof or anticorrosive coating film should be sufficiently adhered to the adherend to ensure watertightness, and should be flexible enough to withstand the volume deformation caused by the temperature difference between summer and winter. In addition, as environmental and safety issues are recently emphasized, functions such as eco-friendly and flame retardancy should be given.

As a method for forming a waterproofing or anticorrosive coating film, a method of applying an elastic coating waterproofing agent using an organic emulsion to an adhered layer has been generally used. The elastic coating waterproofing agent is prepared by mixing a vinyl acetate resin copolymer with Portland cement or silica sand in a predetermined ratio. Since vinyl acetate-based resin is weak in water resistance, if the building is subjected to continuous moisture for a long time, water leakage may occur because it does not maintain adhesiveness to the adherend at the time of construction. In particular, when a waterproof or anticorrosive coating film is formed on the rooftop using such a conventional polymer inorganic elastic coating waterproofing agent, the temperature rises due to the water vapor pressure acting on the adhesive part between the concrete surface and the coating film. This gets even worse.

In addition, merely forming a waterproof or anticorrosive coating film using only a conventional inorganic type elastic coating waterproofing agent has a problem in that it is not easy to impart heat shielding (heat insulation) and flame retardancy to the coating film, and the efficiency thereof is also lowered.

As an example, Korean Patent Laid-Open Publication No. 2005-0000816 discloses a method of forming a waterproof or anticorrosive coating film formed by applying two or more layers of an elastic coating waterproofing agent containing a porous ceramic and a phosphorus-based flame retardant to give flame retardant and thermal insulation performance to a coating layer. In this case, in this case, by adding both a heat insulating material and a flame retardant material to each coating layer, in order to give a desired degree of flame retardant or heat insulating performance, the amount of addition is too large and it is uneconomical, and the physical properties of the coating film formed such as elasticity or durability There was also a problem of deterioration.

Accordingly, the present inventors have applied a waterborne coating using one or more adhesion enhancing components selected from the group consisting of hydrocarbon-based resins, rosin and rosin ester modified resins in Korean Patent Application No. 2005-86405. Forming a primer layer on the surface of the body (S1); Sequentially forming an elastic coating layer and an inorganic insulating coating layer on the surface of the primer layer (S2); And forming a wear-resistant flame retardant coating layer by using a water-based paint containing a flame retardant and a (silicon) acrylic resin on the surface of the insulating coating layer (S3). The formation method of an anticorrosive coating film was disclosed.

This is an environmentally-friendly method using water-based paints, which is formed of an elastic coating layer, an insulating coating layer, and a flame-retardant coating layer which are excellent in elongation and excellent in elongation due to excellent adhesion to the coated object, thereby improving the physical properties and durability of the waterproof or anticorrosive coating film. Technical value is recognized in that it is an economical process that gives flame retardancy.

However, the present inventors further recognize the necessity of a composite waterproofing method which is further supplemented with the center reinforcement of the inorganic waterproof coating layer to improve responsiveness and durability to the behavior of the mother, cracks and moisture, and the material and construction method of the center reinforcement. I realized that I needed to develop more.

In the waterproofing method using a conventional coating material and a waterproof sheet, as a reinforcing material of the coating material, a waterproof is usually provided by providing a nonwoven fabric under the coating material or impregnating rubberized asphalt between the upper and lower portions of the nonwoven fabric and the upper and lower double nonwoven fabrics. Sheets were used.

However, in the case of reinforcing the waterproof layer with a non-woven fabric, for example, the primer layer (S1) formed on the waterproof base layer and the elastic coating layer formed on the primer layer, the inorganic insulating coating layer (S2) In the case of reinforcing the nonwoven fabric between), the coating material layer and flame retardant and the water-based paints (S2 and S3) provided over the nonwoven fabric are inorganic coating materials, so that the surface of the nonwoven fabric is raised and roughened, and the moisture of the coating material and the paint It is quickly absorbed by nonwoven fabric and it is inferior in construction ability, and it is difficult to form a hole through which the coating material provided on top of the non-woven fabric property itself can pass. There was a drawback that the mother's ability to cope with cracks and moisture was significantly reduced.

Accordingly, an object of the present invention is to provide a woven fiber sheet layer as a center reinforcing material of the inorganic coating material layer and to form a hole of a predetermined size in the woven fiber sheet, so as to reduce the physical properties and the floor condition caused when the nonwoven fabric is used as the reinforcing material. Overcoming problems such as rising of the waterproof layer or cracking due to the decrease in responsiveness, and composite waterproofing or anticorrosive method with excellent responsiveness to cracks, behavior and moisture of the mother due to the partial insulation effect of the fiber sheet layer formed under the coating layer To provide.

Another object of the present invention is before or after applying the primer on the waterproof base surface, by attaching a moisture-inducing tape to the waterproof bottom surface and providing a degassing pipe on the wall to efficiently remove the moisture generated in the waterproof bottom surface and the waterproof layer It is to provide a composite waterproofing and anticorrosive method that can prevent the lifting or separation of the waterproofing layer and keep it dry to improve the waterproof structure and durability of the building.

It is another object of the present invention to provide an economical composite waterproofing and anticorrosion method that includes at least one layer of a heat insulating coating layer to improve the heat shielding effect of the entire waterproof structure, thereby achieving efficient use of energy and saving energy. will be.

In order to achieve the object as described above, the composite waterproofing and anticorrosive method using the water-based coating and fiber sheet of the present invention, water-based paint containing at least one selected from the group consisting of hydrocarbon-based resins, rosin and rosin ester modified resin. Forming a primer layer on the waterproof base surface using (S1); Attaching a woven fiber sheet having a hole formed on the primer layer, and connecting a joint of each fiber sheet with a reinforcing tape to form a fiber sheet layer (S2); Sequentially forming an elastic coating layer and an inorganic thermal insulation (insulation) coating layer on the surface of the fiber sheet layer (S3 and S4); And forming a wear resistant flame retardant coating layer using an aqueous paint containing a flame retardant and an acrylic resin on the surface of the thermal insulation (insulation) coating layer (S5).

In the above method, before forming the fibrous sheet layer (S2) and before applying the elastic coating layer (S3), an inorganic insulating (insulation) coating material is provided on the fibrous sheet layer to provide a heat insulating coating layer. It may include the step of forming a further (S4 '). This allows the coating material to pass through the holes formed in the fiber sheet, thereby strengthening the adhesion of the fiber sheet, allowing the coating material to pass through the holes to obtain a partial insulation effect, and providing an elastic coating layer (S3) and thermal insulation provided thereon. ) To obtain the effect of making the thickness of the coating layer (S4) and the flame-retardant coating layer (S5) constant and strengthening the durability of the entire waterproof structure.

In addition, in the composite waterproof and anticorrosive method of the present invention, the woven fabric sheet may be made of flame-retardant or flame-retardant fibers. Flame-retardant or flame-retardant fiber is burned while the flame is in contact with the material, but when the flame is released, the material is turned off by itself loses the propagation ability of the fire, in the case of the present invention further enhances the function of the flame retardant coating layer of step S5 Can play a role.

Holes formed in the woven fabric is provided about 3,500 ~ 5,000 per m 2, preferably having a diameter of about 2 ~ 5mm.

In addition, the reinforcing tape connecting the joints of the fiber sheet is preferably a glass fiber tape coated with an adhesive on one side, and the mesh type fiberglass tape having excellent tensile and tear strength in terms of adhesion to the joint part between the sheet and the sheet. Preference is given to using.

In addition, in the composite waterproofing and anticorrosion method of the present invention, the water-based paint forming the primer layer (S1) is made of a hydrocarbon-based resin, rosin and rosin ester modified resin as disclosed in the prior application No. 2005-86405 10 to 60% by weight of one or more adhesion-promoting components selected from the group and 40 to 90% by weight of an acrylic resin, and may further include additives such as titanium dioxide and an antifoaming agent as necessary.

The elastic coating layer (S3) may use a general elastic coating material known in the art, for example, may include acrylonitrile and butyl acrylate copolymer, inorganic filler, urethane thickener, leveling agent and the like.

The inorganic thermal insulation (insulation) coating layer (S4) is 30 to 50% by weight of vinyl acetate acrylate, 10 to 30% by weight hollow polymer beads containing pores therein, 10 to 50% by weight inorganic filler and hard PVC powder It is preferable that it is formed from the water-based paint containing 10-20 weight%. Hollow polymer beads and PVC powder containing pores therein increases the thermal insulation (insulation) of the coating layer. Titanium dioxide, zirconium beads, talc, calcium carbonate and the like may be used as the inorganic filler.

In addition, the water-based paint forming the flame retardant coating layer (S5) preferably comprises 20 to 50% by weight of any one or more flame retardants selected from the group consisting of antimony trioxide, antimony pentoxide and decabrom.

The composite waterproofing and anticorrosive method using the water-based paint and the fiber sheet of the present invention not only forms a multi-layer coating layer having different functions using the water-based paint, but also improves the responsiveness to the building matrix and serves as a reinforcing center material. It is a composite waterproofing and anticorrosion method with a reinforced function of the fiber sheet layer.

In addition, the present invention before or after applying the primer on the waterproof base surface, to provide a degassing pipe to the wall to effectively remove the moisture generated in the waterproof bottom surface and the waterproof layer to prevent the lifting or separation of the waterproof layer and to prevent dry conditions It can maintain the waterproof structure and durability of the building.

The wall degassing pipe is a wall attachment portion fixed to the wall of the building, and both ends perpendicular to the wall and the bottom, as disclosed in Patent Application No. 2006-11082 filed by the inventor on February 6, 2006 It is attached to the central portion is formed in the central vent spaced apart from the wall and the bottom at regular intervals for the discharge of moisture is composed of a vent for discharging the moisture through the vent, the adhesive in the construction of the wall Alternatively, the wall-type degassing pipes are fixed to the wall of the building at a predetermined interval by using a fixing member, and a moisture-inducing tape made of polyethylene is attached to the degassing pipes in various places on the waterproof floor.

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

1 is a schematic view showing a cross-sectional configuration of a composite waterproof and anticorrosive structure formed in accordance with the present invention, Figure 2 is a perspective view schematically showing the lamination step of such a waterproof and anticorrosive structure.

According to the present invention, first, the primer layer 20 is formed on the waterproof base surface 10 by using an aqueous paint containing one or more adhesion enhancing components selected from the group consisting of hydrocarbon-based resins, rosin, and rosin ester modified resins. (Step S1).

The hydrocarbon-based resin, rosin, rosin ester modified resin functions to increase the adhesion to the adherend. Therefore, by forming the primer layer 20 on the surface of the waterproof base surface 10 with an aqueous coating material containing a mixture of these resins alone or in combination with one or more resins, the waterproof or anticorrosive coating film is peeled off from the adherend according to temperature change. Relax

The water-based paint forming the primer layer 20 is 10 to 60% by weight of one or more adhesion-promoting components selected from the group consisting of hydrocarbon-based resins, rosin and rosin ester modified resin, 40 to 90% by weight acrylic resin, for example. It may include, and may further include additives such as titanium dioxide, antifoaming agent, if necessary.

Subsequently, the woven fiber sheet 30 is attached to the surface of the primer layer 20, and the joints of the respective fiber sheets 30 are connected to each other by a reinforcing tape 32 coated with an adhesive to form a fiber sheet layer (S2). step).

The fiber sheet 30 is woven so that the hole 31 of 3500-5000 pieces / m 2 is formed, it is preferable to use a flame resistant and flame-retardant woven fabric.

In addition, the reinforcing tape 32 connecting the joint portion of each fiber sheet 30 is coated with an adhesive on one surface, it is preferable to use a mesh-type glass fiber tape excellent in tensile strength and tear strength.

As shown in FIG. 1 schematically illustrating a cross section of the waterproof structure of the present invention, the fiber sheet layer 30 forms a partial insulating layer by allowing the coating material to be formed therein to penetrate into the hole 31 of the fiber sheet. .

Therefore, the fiber sheet layer 30 not only serves as a reinforcing center material for the coating layer, but also significantly improves the response to behavior or moisture, such as cracking, shrinkage, and expansion of the building matrix.

That is, a firm bond between the fibrous sheet layer 30 and the coating layer thereon is secured, so that even if there is a crack or behavior in the building matrix, the fiber sheet layer 30 is not directly transferred to the coating layer. You can do it.

The woven fabric used as the fibrous sheet may be naturally attached to any bottom surface unlike the nonwoven fabric which has been mainly used in the related art, and the coating layer to be formed thereon may be smoothly formed.

The fiber sheet layer 30 may be selectively flame retardant or flame retardant.

Next, the elastic coating layer 50 and the inorganic thermal insulation (insulation) coating layer 60 are sequentially formed on the surface of the fiber sheet layer 30 (steps S3 and S4).

The inorganic heat insulating (insulation) coating layer 60 and the elastic coating layer 50 may be formed using a commonly known coating material.

Next, the wear-resistant flame retardant coating layer 70 is formed on the surface of the heat insulating (insulation) coating layer 60 by using an aqueous paint containing a flame retardant and a (silicon) acrylic resin (step S4).

The (silicon) acrylic resin enhances the wear resistance of the coating layer.

As the flame retardant, antimony trioxide, antimony pentoxide, decabromide, etc. may be used, and the water-based paint forming the wear resistant flame retardant coating layer may include, for example, 20 to 50 wt% based on the total weight of the paint.

In the composite waterproof and anticorrosive method of the present invention, an inorganic thermal insulation (insulation) coating layer 40 is formed between the fiber sheet layer 30 forming step (S2) and the elastic coating layer 50 forming step (S3). Forming step S4 ′ may be further included. The thermal insulation layer 40 may be provided on the fiber sheet layer 30 to enhance the adhesion of the fiber sheet to improve durability of the waterproof layer.

Forming a composite waterproof structure according to the present invention as described above, since the flame transmission is blocked by the wear-resistant flame retardant coating layer 70, which is the outermost coating layer in the event of a fire, the heat shield (insulation) coating layer 60 below it The flame does not propagate below.

In addition, according to a preferred embodiment, the PVC powder added to the inorganic heat insulating (insulation) coating layer 60 exhibits a synergistic effect in preventing flame propagation, and optionally by the flame-retardant fibrous sheet layer 30. Flame propagation can be effectively blocked.

According to the present invention, by forming a multi-layered coating film layer having different functions, the respective functions can synergistically achieve the desired functions more efficiently.

For example, in the case of forming a waterproof or anticorrosive coating film provided with flame retardancy only with a paint containing a flame retardant, the flame retardant content should be four times higher than that of the waterproof or anticorrosive method of the present invention in which the flame retardant is included only in the outermost layer. The physical properties of the coating film formed, such as durability, may fall.

In addition, according to a preferred embodiment of the present invention, before or after applying the primer layer 20 on the waterproof base surface 10, in order to efficiently remove moisture generated in the waterproof base surface and the waterproof layer (80) ) To prevent lifting or separation of the waterproofing layer and keep it dry.

The wall degassing pipe 80 is fixed to the wall of the building by using an adhesive or a fixing member at fixed intervals, and after fixing the degassing pipe 80, the moisture-induced tape 81 made of polyethylene around the waterproof floor It is preferable to induce moisture toward the degassing tube 80 by attaching it toward the degassing tube 80.

2 schematically shows a state in which the wall type degassing pipe 80 and the moisture induction tape 81 are installed in the present invention.

That is, looking at the method of the present invention using the wall-type degassing pipe 80, first to clean up the waterproof base surface 10 and before or after applying the primer 20 to the wall-shaped degassing pipe 80 such as anchor bolt It is fixed to the wall by a fixing member, and a moisture induction tape 81 is attached to the bottom surface so that moisture is induced to the degassing pipe 80 on the bottom surface.

Then, after the primer 20 is applied onto the degassing pipe 80 or the fiber sheet 30 of the present invention is disposed, the sequential process of the present invention may be performed as described above.

Embodiments according to the present invention can be modified in many different forms, the scope of the invention should not be construed as being limited to the above embodiments. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

As described above, the present invention provides a woven fabric sheet layer as a center reinforcing material of the inorganic coating material layer and forms a hole of a predetermined size in the woven fabric sheet, resulting in a decrease in physical properties and floor state caused when the nonwoven fabric is used as a reinforcing material. Overcoming problems such as lifting or cracking of the waterproofing layer due to a decrease in the response to the film, and composite waterproofing having excellent responsiveness to cracks, behavior and moisture of the mother due to the partial insulation effect of the fiber sheet layer formed under the coating layer Provide method of construction.

In addition, the present invention is an environmentally friendly waterproofing and anticorrosive method using water-based paint and fiber sheet, the responsiveness to the crack and behavior of the mother by the fiber sheet layer is improved, the elastic coating layer, the thermal insulation (insulation) coating layer excellent in elongation and By forming the flame-retardant coating layer in sequence to provide a composite waterproof and anticorrosive method that can impart flame retardance economically while improving the physical properties and durability of the entire waterproof layer.

In addition, according to the present invention, before or after applying the primer on the waterproof base surface, by attaching a moisture induction tape to the waterproof bottom surface and providing a degassing pipe on the wall to efficiently remove the moisture generated in the waterproof bottom surface and the waterproof layer and dry By maintaining the state it is possible to improve the waterproof structure and durability of the building.

Finally, the waterproof method of the present invention includes at least one layer of a heat insulating layer to improve the heat shielding effect of the entire waterproof structure, thereby enabling economic efficiency due to efficient use of energy and energy saving effect.

Claims (6)

Forming a primer layer on the waterproof base surface using an aqueous paint comprising at least one selected from the group consisting of a hydrocarbon-based resin, a rosin, and a rosin ester-modified resin (S1); Attaching a woven fiber sheet having a hole formed on the primer layer, and connecting a joint of each fiber sheet with a reinforcing tape to form a fiber sheet layer (S2); Sequentially forming an elastic coating layer and an inorganic thermal insulation (insulation) coating layer on the surface of the fiber sheet layer (S3 and S4); And forming a wear-resistant flame retardant coating layer using a water-based paint containing a flame retardant and an acrylic resin on the surface of the thermal insulation (insulation) coating layer (S5). The method of claim 1, wherein after forming the fiber sheet layer (S2) and before applying the elastic coating layer (S3), by providing an inorganic thermal insulation (heat insulation) coating material on the fiber sheet layer to the heat insulation (heat insulation) coating layer Composite waterproofing and anticorrosion method further comprising the step (S4 '). The composite waterproof and anticorrosive method according to claim 1, wherein the woven fiber sheet is made of flame retardant or flame retardant fibers. The composite waterproof and anticorrosive method according to claim 1 or 3, wherein the holes formed in the woven fabric sheet are provided with about 3,500 to 5,000 per m 2, and each hole has a diameter of about 2 to 5 mm. The method of claim 1, wherein the reinforcing tape connecting the joints of the fiber sheet is a composite waterproof and anticorrosive method, characterized in that the glass fiber tape coated with an adhesive on one side. The method according to claim 1, before or after forming the primer layer on the waterproof base surface, by using an adhesive or a fixing member on the wall by arranging and fixing the wall-type outgassing tube at regular intervals, the moisture-induced tape made of polyethylene waterproof Composite waterproofing and anticorrosion method comprising attaching to the degassing pipe in some places on the bottom surface.

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