KR102282177B1 - Complex waterproofing method having improved insulation and antibacterial properties - Google Patents

Abstract

The present invention relates to a hybrid waterproofing method with improved insulation and antibacterial properties, wherein the hybrid waterproofing method uses a polyester foam sheet of a predetermined thickness to form an insulation sheet for improving the insulation, and a moisture absorbent is included in the polyester foam sheet to absorb moisture generated from concrete to reduce condensation generated in a waterproofing sheet. Moreover, according to the present invention, an antibacterial sheet is formed to have antibacterial performance, and a hard coating layer to which high strength ultra-high-speed eco-friendly mortar is applied is formed to rapidly perform construction while improving adhesion performance and flatness.

Description

Complex waterproofing method having improved insulation and antibacterial properties

The present invention relates to a composite waterproofing method having improved heat insulation and antibacterial properties, and specifically, composite waterproofing by forming an insulation sheet including a polyester foam sheet, and forming an antibacterial sheet including an antibacterial material on an upper portion of the insulation sheet It's about engineering.

As waterproofing methods for building structures, conventionally known methods include asphalt waterproofing, cement liquid waterproofing, coating waterproofing, and sheet waterproofing.

Among these, coating film waterproofing is to obtain a waterproof effect through a coating film formed by mixing synthetic rubber, synthetic resin, and curing agent and applying it closely to the bottom layer. It has excellent impact resistance and abrasion resistance, but has poor absorption against external vibration and no lifting phenomenon. The downside is that it can happen.

In addition, sheet waterproofing is to obtain a waterproof effect by connecting waterproof sheets of a certain standard using synthetic rubber, synthetic resin, or rubberized asphalt as the main raw material. A method of attaching the joints by overlapping them and then melting them using a torch lamp or the like was used.

However, due to overheating or incomplete heating of the torch lamp for the joint, it was also a cause of leakage, and since only the self-adhesion of the sheet waterproofing material was attached to the lower part coated with the primer, a lifting phenomenon between the concrete surface and the waterproofing layer occurred. Therefore, there was a problem that it was not easy to find the leaking part when a defect occurred later.

In order to improve these problems, recently, a composite waterproofing method has been developed that improves the disadvantages of sheet waterproofing and coating film waterproofing.

In the case of the existing composite waterproofing method, developed only for the purpose of waterproofing, the heat shielding function to prevent solar heat from entering the room and the insulating function to prevent the loss of cold air and heat inside the building were insufficient.

Republic of Korea Patent Registration No. 10-0725187

The present invention has been devised in consideration of and solving the problems of the prior art, by forming an insulating sheet using a polyester foam sheet having excellent thermal insulation properties, and forming an antibacterial sheet containing an antibacterial material on the top of the insulating sheet. An object of the present invention is to provide a composite waterproofing method that improves thermal insulation and antibacterial properties.

The present invention comprises the steps of forming a primer layer by applying a primer to the concrete surface; forming an insulating sheet using a polyester foam sheet having a thickness of 1 mm to 20 mm on top of the primer layer; forming an antibacterial sheet by applying an antimicrobial composition to the upper portion of the insulating sheet; forming a coating film waterproofing layer by applying a polyurethane coating film waterproofing material to the upper portion of the antibacterial sheet; and forming a top coating layer by applying an epoxy resin on an upper portion of the waterproofing layer,

The polyester foam sheet has an average cell size of 50 μm to 500 μm, and the polyester foam sheet absorbs moisture generated from concrete by including a desiccant,

The antimicrobial composition provides a composite waterproofing method comprising at least one of volcanic stone powder, oyster shell powder, and loess powder.

According to the present invention, a heat insulating sheet is formed using a polyester foam sheet of a certain thickness to improve heat insulation, and a moisture absorbent is included in the polyester foam sheet to absorb moisture generated from concrete from concrete to generate in the waterproof sheet. condensation can be reduced.

In addition, according to the present invention, it is possible to improve the adhesion performance and flatness while enabling rapid construction by forming an antibacterial sheet to have antibacterial performance, and to form a hard coating layer coated with high-strength ultra-fast diameter eco-friendly mortar.

1 is a schematic configuration diagram showing a composite waterproofing method according to an embodiment of the present invention.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings, and the purpose and configuration of the present invention and its features will be better understood through such detailed description.

The present invention comprises the steps of forming a primer layer by applying a primer to the concrete surface; forming an insulating sheet using a polyester foam sheet having a thickness of 1 mm to 20 mm on top of the primer layer; forming an antibacterial sheet by applying an antimicrobial composition to the upper portion of the insulating sheet; forming a coating film waterproofing layer by applying a polyurethane coating film waterproofing material to the upper portion of the antibacterial sheet; and forming a top coating layer by applying an epoxy resin on an upper portion of the waterproofing layer,

The polyester foam sheet has an average cell size of 50 μm to 500 μm, and the polyester foam sheet absorbs moisture generated from concrete by including a desiccant,

The antimicrobial composition provides a composite waterproofing method comprising at least one of volcanic stone powder, oyster shell powder, and loess powder.

As shown in FIG. 1, the composite waterproofing method according to an embodiment of the present invention includes a step of forming a primer layer (S100), a step of forming an insulating sheet (S200), a step of forming an antibacterial sheet (S300), a coating film It includes a step of forming a waterproof layer (S400) and a step of forming a top coating layer (S500).

The step of forming the primer layer (S100) serves to improve the bonding force between the concrete and the insulating sheet laminated thereon.

The step of forming the primer layer (S100) is performed by applying a polyepoxy composition.

The polyepoxy composition may be mixed with 25 to 40 parts by weight of an isocyanate, 10 to 20 parts by weight of a solvent, 10 to 25 parts by weight of an amine, 1 to 5 parts by weight of an epoxy resin, and 20 to 30 parts by weight of a viscosity modifier based on 100 parts by weight of the total composition. can

The amine is 30 to 40 parts by weight of 3,5 diethyltoluene-2,4/2,6-diamine (Diethyltoluene-2,4/2,6-diamine); 4,4bis(2-chloroaniline)[4,4bis(2-chloroaniline)] 5 to 10 parts by weight; and 3 to 5 parts by weight of 4,4'-methylene bis[N-(1-methylpropyl)benzenamine](4,4'-methylene Bis[N-(1-methylpropyl)benzenamine] may be mixed.

The epoxy resin may be 4,4'-(1-methylethylidene)bisphenol polymer with (chloromethyl)oxirane.

Accordingly, in the chemical reaction between the isocyanate and the amine, a curing rate that is tens to hundreds of times faster than the chemical reaction rate of isocyanate and polyol which is generally used is realized.

In the step of forming the primer layer (S100), the polyepoxy composition may be applied to have a thickness of about 1 mm to 3 mm from the concrete floor.

Forming the heat insulating sheet (S200) serves to form a high-strength heat insulating layer using a polyester foam sheet of a certain thickness on top of the primer layer.

More than 90% of the polyester foam sheet may be a closed cell (DIN ISO4590). This may mean that 90% (v/v) or more of the cells measured according to DIN ISO4590 of the foam sheet are closed cells. For example, the closed cells in the foam sheet may be 90 to 100% or 95 to 100%. The polyester foam sheet of the present invention can implement excellent thermal insulation properties by including a foam layer having closed cells within the above range.

The polyester foam sheet is formed by foaming a polyester resin, and the polyester resin is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), poly lactic acid (PLA). ), Polyglycolic acid (PGA), Polypropylene (PP), Polyethylene (PE), Polyehtylene adipate (PEA), Polyhydroxyalkanoate (PHA), Poly It may be at least one selected from the group consisting of trimethylene terephthalate (PTT) and polyethylene naphthalate (PEN). Specifically, the polyester resin may be a polyethylene terephthalate (PET) resin.

The polyester foam sheet may have a thickness of 1mm to 20mm, 1mm to 10mm or 1mm to 20mm. In addition, the polyester foam sheet may have an average cell size of 50 μm to 500 μm, 50 μm to 300 μm, or 50 μm to 200 μm. By having the thickness and cell size as described above, the heat insulating sheet of the present invention may have excellent strength and heat insulating properties.

Accordingly, the polyester foam sheet may have a flexural strength of 50 MPa to 500 MPa, 50 MPa to 300 MPa, or 50 MPa to 150 MPa. In this case, the flexural strength is the flexural strength measured according to ASTM D790.

In addition, the polyester foam sheet contains a desiccant to absorb moisture generated from the concrete to prevent dew condensation. Specifically, the polyester foam sheet may be foamed after mixing a polyester resin with a moisture absorbent, or a moisture absorbent dispersed on at least one surface of a polyester foam sheet foamed with a polyester resin.

The polyester foam sheet may form an adhesive layer on at least one surface. In addition, when the adhesive layer is formed on one surface of the polyester foam sheet, the adhesive layer formed on the foam sheet may include a release film. The release film may be removed when formed by laminating an antibacterial sheet.

For example, when the absorbent is dispersed on at least one surface of the polyester foam sheet, one surface on which the absorbent is dispersed may be laminated to contact the primer layer, and an adhesive layer is formed on the other surface to improve adhesion with the antibacterial sheet. can be

Forming the antibacterial sheet (S300) serves to improve the durability by improving the antibacterial properties of the composite waterproof.

Forming the antibacterial sheet (S300) may be formed by applying an antimicrobial composition containing at least one antimicrobial material from among volcanic stone powder, oyster shell powder, and loess powder on the upper portion of the insulating sheet.

The antimicrobial material includes 1 to 30 parts by weight based on 100 parts by weight of the antimicrobial composition.

The antimicrobial composition may further include at least one antimicrobial additive from among marjoram extract, rhubarb extract, thyme hydrosol, pine bark extract, grape seed extract, and aronia extract to reinforce antimicrobial properties.

The antimicrobial additive may further include 1 to 15 parts by weight based on 100 parts by weight of the antimicrobial composition.

In addition, the antimicrobial composition may further include 1 to 5 parts by weight of an antimicrobial adjuvant based on 100 parts by weight of the antimicrobial composition.

The antimicrobial adjuvant is intended to increase antibacterial properties, and may be formulated in 55% by weight of cypress sawdust, 40% by weight of rice bran, and 5% by weight of essential oil.

The antibacterial auxiliary agent is preferably prepared by the following process.

After roasting rice bran in oil, drying it at room temperature for 24 hours, manufacturing and pulverizing pre-treated rice bran, mixing the cypress sawdust and essential oil, and maintaining at 30° C. for 12 hours, the pretreated rice bran powder In a mixed state, the primary mixture is prepared by maintaining it at room temperature (20-25 ° C.) for 12 hours, and the primary mixture is stirred while adding water so that the moisture content becomes 18 wt% to 22 wt% to prepare a secondary mixture, , it can be prepared by aging the secondary mixture at room temperature (20-25° C.) for 30 hours.

Here, the antimicrobial adjuvant can provide an antibacterial effect and a deodorizing effect through phytoncide of natural ingredients generated from cypress sawdust and essential oil, thereby preventing mold or bacteria from occurring on the concrete structure. and can prevent cracks even after long-term use.

The step of forming the antibacterial sheet (S300) may be performed by applying the antimicrobial composition to a sheet in which one or more fibers made of a dense knitted part are laminated. Gas or moisture can be smoothly discharged, including the sheet in which the fiber fabric is laminated as described above.

The composite waterproofing method according to the present invention is a synthetic polymer of SBR (Styrene Butadiene Ruber) or silicone or polyurea epoxy composite resin on the upper portion of the antibacterial sheet before the step of forming a waterproofing layer. It further comprises the step of forming a hard coating layer by applying a super-velocity environment-friendly mortar containing a polymer.

The super-velocity environment-friendly mortar may include 5 to 30 parts by weight of magnesium oxide (MgO), 10 to 40 parts by weight of _{potassium phosphate (KH 2} PO ₄ ) or sodium phosphate (Na ₅ P ₃ O _{10 ) based on 100 parts by weight of the polymer.} there is.

The polymer basically improves durability and chemical resistance, entrains air, reduces water permeability as well as enhances strength, and increases adhesion strength.

As the polymer, any one of a synthetic polymer or a super fast polymer may be selected, or both may be used by mixing the synthetic polymer and the super fast polymer.

As the synthetic polymer, SBR (Styrene Butadiene Ruber) or silicone may be used.

The super-fast polymer is intended to shorten the curing time in addition to the basic action described above, and a polyurea-epoxy composite resin may be used.

Here, in the case of using both the synthetic polymer and the super fast polymer, it is preferable to mix and use it in a weight ratio of synthetic polymer: super fast polymer = 1 to 2: 0.5 to 1.5.

Here, in the synthetic polymer, when SBR (Styrene Butadiene Ruber) is used, it is preferable to mix 60 to 70% by weight of styrene and 30 to 40% by weight of butadiene.

In addition, in the case of using SBR (Styrene Butadiene Ruber), a density of 1.00 to 1.12 g/cm 3 , a pH of 8 to 8.2, a viscosity of 20 to 30 cps (at 25° C.), and a surface tension of 30 to 40 dynes/cm at 25° C. to satisfy

It is preferable to use a two-component type polymer that has a viscosity of 14 to 15 cps (at 25° C.) and is blended with a curing agent in a weight ratio of 1:1 as the initial velocity polymer.

The magnesium oxide (MgO) and the potassium phosphate (KH ₂ PO ₄ ) or sodium phosphate (Na ₅ P ₃ O ₁₀ ) are used as a binder for rapid repair that enables rapid hardening through mutual hydration, mortar It has a hydration reaction rate that can increase work efficiency during construction through mixing with side water, induces rapid hardening, and acts to secure mortar side strength and have adhesion.

Here, when the magnesium oxide (MgO) is _{used as a binder together with potassium phosphate (KH 2} PO ₄ ) or sodium phosphate (Na ₅ P ₃ O ₁₀ ), it works while increasing the hydration reaction efficiency, such as securing workable time. In order to be able to shorten the time, it is preferable to use light burned magnesia, which is calcined at 600 to 1000°C.

At this time, it is preferable to use the light magnesia having a particle size of 10 to 20 μm and a powder of 7500 to 8500 cm 2 /g.

That is, when the magnesium oxide (MgO), particularly light magnesia, is used by mixing the mortar having the above composition with water, the potassium phosphate (KH ₂ PO ₄ ) or sodium phosphate (Na ₅ P ₃ O ₁₀ ). Through this, it functions as a magnesia phosphate binder, inducing rapid hardening of the mortar side, as well as securing strength and adhesion.

The step of forming the waterproof coating layer (S400) is a step of forming a coating coating waterproofing layer by applying a polyurethane coating waterproofing material on the upper part of the hard coating layer. It can be applied on the entire surface using a brush or roller.

In the step of forming the waterproof coating layer (S400), a polyurethane resin is applied to a thickness of 1 mm to 3 mm to form an areal density of ^{2 to 6 kg/m 2 .}

In the step of forming the top coating layer (S500), an epoxy resin is applied on the upper portion of the waterproofing layer, so that it dries quickly even in a high humidity place, so that the workability is excellent, and the top coating layer is excellent in weather resistance, chemical resistance, electrical insulation, water resistance, etc. plays a role in shaping.

The step of forming the top coating layer (S500) may be formed to have an areal density of ^{1 to 10 kg/m 2} by applying an epoxy resin to a thickness of 2 mm to 5 mm.

As the epoxy resin, an epoxy resin commonly used in the field to which the present invention belongs may be used, and a general epoxy resin, an epoxy resin containing chlorine, a novolak epoxy resin, a brominated epoxy resin, or a mixture thereof may be used. In addition, one or more materials commonly used in the field to which the present invention belongs, such as acrylic, polyurethane, fiber-reinforced plastic (FRP), latex, vinyl, melamine resin, and polymer resins capable of copolymerization or modification, and their compounds are mixed. It is also possible to use

Commercial examples of the epoxy resin include R1475, KEM-128M, KEM-128-70, KEM-134-60, EM-101-50, KEM-172-60, KEM-019-50, H-, available from Kukdo Chemical. 23, H-4121, H-4148-3, KH-700, KH-701, and the like.

S100: forming a primer layer
S200: forming a heat insulating sheet
S300: Forming an antibacterial sheet
S400: forming a coating film waterproof layer
S500: Forming a top coating layer

Claims (7)

forming a primer layer by applying a primer to the concrete surface;
forming an insulating sheet using a polyester foam sheet having a thickness of 1 mm to 20 mm on top of the primer layer;
forming an antimicrobial sheet by applying an antimicrobial composition to the upper portion of the insulating sheet;
forming a coating film waterproofing layer by applying a polyurethane coating film waterproofing material to the upper portion of the antibacterial sheet; and
Comprising the step of forming a top coating layer by applying an epoxy resin on the upper portion of the waterproofing layer,
The polyester foam sheet has an average cell size of 50 μm to 500 μm,
The polyester foam sheet includes a desiccant and absorbs moisture generated from the concrete, but has a desiccant on one side in contact with the primer layer, and an adhesive layer is formed on the other side to improve adhesion with the antibacterial sheet,
The antimicrobial composition is a composite waterproofing method comprising at least one of volcanic stone powder, oyster shell powder, and loess powder. delete According to claim 1,
The adhesive layer formed on the polyester foam sheet is provided with a release film,
The step of forming the antibacterial sheet is a composite waterproofing method performed by laminating the antibacterial sheet while removing the release film. According to claim 1,
The flexural strength of the polyester foam sheet is a composite waterproofing method of 50 MPa to 500 MPa. According to claim 1,
In the step of forming the antibacterial sheet, an antibacterial composition comprising at least one antimicrobial component from among volcanic stone powder, oyster shell powder, and loess powder is applied to a sheet in which one or more fiber fabrics made of a dense knitted part are laminated. Compound waterproofing Method. According to claim 1,
Before the step of forming the coating film waterproof layer,
A hard coating layer is formed by applying SBR (Styrene Butadiene Ruber) or an ultra-high-speed polymer of a synthetic polymer of silicone or polyurea-epoxy composite resin or an ultra-high-strength ultra-high-speed eco-friendly mortar containing the synthetic polymer and the ultra-high-speed polymer on the upper portion of the antibacterial sheet. Composite waterproofing method further comprising the step of forming. According to claim 1,
The antibacterial composition further comprises at least one antimicrobial additive from among marjoram extract, rhubarb extract, thyme hydrosol, pine bark extract, grape seed extract, and aronia extract to reinforce antimicrobial properties.

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