KR102458693B1 - Water proofing method based on sbr - Google Patents

Abstract

The present invention can construct degassing means in an expansion and contraction joint to discharge, to the outside of a waterproof layer, moisture, moisture, gas, etc. between an object to be coated and the waterproof layer to prevent the waterproof layer from lifting, strongly attach the waterproof layer to the surface of the object to be coated, and prevent the waterproof layer from swelling and bursting or being damaged, thereby obtaining a waterproofing effect for a long time. In addition, the present invention can directly apply a SBR eco-friendly waterproofing material to perform waterproof construction to have no need for undercoating to reduce the number of work processes, increase heat resistance and crack resistance, and increase adhesibility, thereby a waterproofing effect for a long time. In addition, the present invention allows a non-woven fabric, an eco-friendly waterproof resin coating, and a top coating containing waste coffee bean powder to sequentially form a layer on a SBR eco-friendly waterproofing material, thereby providing the waterproofing, moisture gas guidance, and heat shielding of a structure achieving the adhesive strength of the resin and non-slippage. A waterproofing method based on SBR comprises a sixth step (S60) of applying, on an eco-friendly waterproofing resin (50), an eco-friendly ultraviolet blocking top coating (60) containing waste coffee bean powder.

Description

SBR-based waterproofing method {WATER PROOFING METHOD BASED ON SBR}

The present invention relates to a waterproofing construction method, and more particularly, it can be immediately constructed without undercoating using SBR eco-friendly waterproofing material, thereby reducing the construction process while providing excellent heat resistance and crack resistance as well as high adhesion to prevent cracking for a long period of time This allows the waterproofing effect to last for a long time. At this time, by having a degassing means in the expansion and contraction joints formed on the application object, the gas or moisture generated between the waterproofing film and the application object is discharged outside the waterproofing film, so that the waterproofing film is not lifted or damaged, thereby further increasing the adhesion and waterproofing. This allows the membrane to be used for a long time without deteriorating its performance.

In general, the floor such as the roof of a building is always exposed to the outside regardless of the change of season. . At this time, the waterproof construction, as in the following (Patent Document 1) to (Patent Document 3), to obtain a waterproof effect by forming a waterproof sheet or coating layer of various layer structures.

(Patent Document 1) Korean Patent No. 10-2280015

An eco-friendly hydration reaction hardening inorganic combined concrete integrated organic/inorganic hybrid composite waterproof sheet and a waterproof construction method using the same, comprising: a first nonwoven fabric layer for impregnation; an organic/inorganic hybrid waterproofing layer that is impregnated and laminated on the bottom surface of the first nonwoven fabric layer for impregnation and laminated so as to be integrally bonded to the concrete substrate by hydration reaction hardening inorganic bonding; a PVC waterproofing layer laminated on an upper surface of the first nonwoven fabric layer for impregnation and laminated to have an elastic stress corresponding to cracks in the concrete substrate; A second non-woven fabric layer laminated on the PVC waterproof layer: The organic/inorganic hybrid waterproof layer impregnated and laminated on the bottom surface of the first non-woven fabric layer and the concrete substrate are integrally bonded and laminated by hydration reaction hardening inorganic bonding, Eco-friendly hydration reaction hardening inorganic combined concrete integrated waterproofing sheet and waterproof construction method using the same, which can maximize waterproof durability and waterproof effect by blocking cracks by elastic stress of the PVC waterproofing layer even when cracks occur in the concrete substrate it's about

(Patent Document 2) Korean Patent No. 10-2246829

“Concrete base surface (slab or concrete vertical wall)” → “Silicone application” → “Placing of micro-ventilated PE compressed long fiber nonwoven fabric” → “Urethane coating”. There are two functions: the adhesion function to adhere the entire surface of the concave-convex surface and the binding function of the penetration anchor to the "PE compressed long fiber nonwoven fabric" are performed at the same time. On the other hand, by adding the penetration anchor binding function of "urethane" to this, the expansion and contraction behavior function is performed integrally with a stronger waterproof function, and, in this construction process, the The air trapped between the "Silicone upper surface" and the "PE compressed long fiber nonwoven fabric" is discharged through the micro vents of the "PE compressed long fiber nonwoven fabric", thereby removing the "air residual trapped space", and as a result, the base surface concrete Its durability and waterproof durability are significantly improved.

(Patent Document 3) Korean Patent No. 10-2166038

It relates to a floor waterproofing construction method that can reduce the time required for floor waterproofing while ensuring proper waterproofing performance. Floor waterproofing construction method for solving the above problems, the floor waterproofing construction method, the base surface cleaning step of removing foreign substances on the floor, and protecting the drain; An asphalt primer application step of applying an asphalt primer of 0.2 to 0.4 liters per square meter (m2) to the cleaned base surface; a step of reinforcing a vulnerable part of selecting a leak-prone part among the ground surface to which the asphalt primer is applied through the asphalt primer application step, and reinforcing the selected vulnerable part using a reinforcing sheet; After the weak part is reinforced through the step of reinforcing the weak part, a coating film material application step of uniformly applying the coating film material so as to have a thickness of 2 to 3 mm as a whole; and a waterproof sheet attaching step of attaching the waterproof sheet as a whole so as to cover the coating material applied through the coating film material application step.

However, this conventional waterproof construction technology has the following problems.

(1) Since waterproofing is applied to the surfaces of civil buildings such as mortar and concrete, concrete structures, cement structures, and CRC (glass fiber reinforced concrete plate) structures, the waterproofing film is applied. As a result of prolonged exposure to sunlight or cold winter weather, the waterproof membrane is damaged in a short time due to deterioration and corrosion.

(2) As such, damage to the waterproofing membrane not only makes it impossible to protect the building or structure, but also has the inconvenience of frequently installing the waterproofing membrane on the building or structure for maintenance.

(3) On the other hand, the waterproof membrane installed by the existing method is waterproofed on top of the building or structure in the state where moisture or moisture is not completely removed between the surface and the building or moisture or moisture that has penetrated into the building or structure is not completely removed. If the membrane is installed, there is a risk that moisture or moisture expands or evaporates, destroying the waterproofing membrane.

(4) In particular, there is a high risk of damaging or destroying the waterproofing membrane, such as cigar air, which is sensitive to temperature, such as in midsummer or midwinter.

(5) In addition, if the waterproof membrane constructed in this way is damaged or lifted from the floor of a building or structure over time, repair and reinforcement work is performed on the lifted part. You should do it often.

(6) On the other hand, as the existing waterproofing membrane uses a low rate of using natural materials, does not use natural materials, or uses chemicals as an adhesive between layers, if the waterproofing membrane is damaged or damaged, it is harmful to the human body. There is a risk of emitting gas or the like.

Korean Patent Registration No. 10-2280015 (Registration Date: July 15, 2021) Korean Patent Registration No. 10-2246829 (Registration Date: 2021.04.26) Korean Patent No. 10-2166038 (Registration Date: 2020.10.08)

The present invention takes this point into consideration, and by constructing a deaeration means on the expansion joint (construction) formed on the surface of the application object, moisture, moisture, and gas generated between the application object and the waterproofing film are removed between the application object and the waterproofing film. To provide an SBR-based waterproofing construction method that allows the waterproofing membrane to be firmly attached to the surface of the object to be applied without lifting it up by allowing it to be discharged from the outside, while preventing the waterproofing membrane from swelling and bursting or being damaged to obtain a waterproof effect for a long time. There is this.

In addition, the present invention is composed of SBR latex, dispersant, anti-aging agent, and filler, and the dispersant is alcohol ethoxylate, quaternary cocoalkylamine, glycerin and distilled water. By applying waterproofing to the surface, it can be installed immediately without undercoating, reducing the work process and providing a waterproof surface that has excellent heat resistance and crack resistance, and at the same time has improved adhesion, so that the waterproofing effect can be maintained for a long time without cracking for a long time. Another object is to provide a waterproof construction method based on SBR.

And the present invention is configured such that the non-woven fabric, the eco-friendly waterproof resin is applied on the SBR eco-friendly waterproofing material, and the eco-friendly UV protection top coating containing the waste coffee bean powder is sequentially made, thereby waterproofing the structure that realizes the bonding force of the resin and non-slip, Another object is to provide a waterproof construction method based on SBR that enables moisture gas induction and heat shielding.

SBR-based waterproof construction method according to the present invention for achieving this object, a first step (S10) of cleaning the surface of the application object 10 to be waterproofed; A degassing means 20 made of at least one of silica sand, a net hose, and a perforated pipe is constructed on the expansion and contraction joint 11 formed on the surface of the application object 10, and the constructed end is exposed outside the edge of the waterproof surface to prevent moisture and gas a second step (S20) of discharging out of the waterproofing membrane; It is composed of SBR latex, dispersant, anti-aging agent, and filler, and the dispersant is a composition for coating film waterproofing agent consisting of alcohol ethoxylate, quaternary cocoalkylamine, glycerin and distilled water. A third step of forming (30) (S30); a fourth step (S40) of integrally configuring the nonwoven fabric 40 on the SBR eco-friendly waterproofing material 30 to be impregnated; a fifth step (S50) of applying an eco-friendly waterproof resin 50 on the nonwoven fabric 40; and a sixth step (S60) of top coating (60) for eco-friendly UV protection containing waste coffee bean powder on the eco-friendly waterproof resin (50); 10) It is characterized in that it is applied to penetrate into the groove 12 formed on the surface of the application object 10 so as not to be applied to the entire surface and to be located at the edge of the SBR eco-friendly waterproofing material 30 .

In particular, when the expansion joint 11 is not constructed on the application object 10, when it is not manufactured, the width section has a 'V' groove or 'U' groove shape on the surface of the application object 10. It is characterized in that it is formed by processing in a grid shape.

In addition, the degassing means 20 extends from the expansion and contraction joint 11 formed in a mesh shape so that the end exposed outside the edge of the waterproof surface rides on the inner wall surface of the application object 10 and rises to the top coating (60) It is characterized in that it is formed to come to a higher position.

delete

On the other hand, the composition for the coating film waterproofing agent, based on the total weight of the composition for the coating film waterproofing agent, the SBR latex is 75 to 80% by weight, the dispersant is 5 to 10% by weight, the antioxidant is 5 to 10% by weight, the The filler is characterized in that 5 to 8% by weight.

In addition, the dispersant is based on the total weight of the dispersant, the alcohol ethoxylate is 10 to 15% by weight, the fourth cocoalkylamine 10 to 20% by weight, glycerin 15 to 25% by weight, and distilled water 45 to 65% by weight %.

And the composition for waterproofing coating film is characterized in that it has heat resistance and crack resistance.

Finally, after the sixth step (S60), a seventh step (S70) of measuring the thickness of the waterproofing film and applying a predetermined thickness; and an eighth step (S80) of finishing the waterproof construction surface with a protective material and protective mortar.

The SBR-based waterproof construction method according to the present invention has the following effects.

(1) As a waterproofing film is formed on the expansion and contraction joint formed in the application object in advance with a degassing means, moisture, moisture, and gas absorbed into the application object or remaining between the waterproofing film and the application object are removed through the degassing means. As it escapes to the outside of the waterproofing membrane, it can prevent the waterproofing membrane from being separated or lifted, and can be used for a long time.

(2) As the first waterproofing film is formed by applying the SBR eco-friendly waterproofing material directly on the cleaned application object, waterproof construction can be performed without any undercoating. This can reduce the number of construction steps in waterproof construction as well as reduce construction costs.

(3) In addition, the SBR eco-friendly waterproofing material is composed of SBR latex, dispersant, anti-aging agent, and filler, so it can be used in an environment-friendly way. It is possible to obtain a waterproof surface that lasts for a long time without cracking.

(4) In addition, by depositing and using a nonwoven fabric, most preferably a breathable non-woven fabric, on the SBR eco-friendly waterproofing material, the ventilation efficiency is increased while maintaining the overall shape and structural rigidity of the installed waterproofing membrane. can do.

(5) By using waste coffee bean powder in the top coating agent used for eco-friendly UV protection, this waste coffee bean powder is used to prevent surface aging of the top coating agent, prevent slipping (non-slip) and heat shielding effect. can be obtained

(6) Therefore, the present invention uses SBR eco-friendly waterproofing material and uses waste bean powder to be eco-friendly, and there is no connection part that extends the life of the structure and minimizes inconvenience caused by water leakage. It has excellent crack resistance and excellent waterproof performance, so it has a unique effect of strengthening the life span of structures in external air pollution and natural environments.

[FIG. 1] is a flowchart sequentially showing the SBR-based waterproofing construction method according to the present invention.
[Fig. 2] to [Fig. 5] are views for explaining the construction process performed step by step in the SBR-based waterproof construction method according to the present invention.
[Fig. 6] is a photograph showing the state after 3 days at room temperature after treatment with the conventional coating film waterproofing agent (a) and the SBR eco-friendly waterproofing material according to the present invention (b).

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention in accordance with the principle that it is possible.

Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that there may be variations and examples.

[ SBR Base waterproof construction method]

In the SBR-based waterproofing construction method according to the present invention, as shown in [Figs. 1] to [Fig. 6], the degassing means 20 is installed so that moisture and gas are discharged on the surface of the cleaned application object 10, and then Immediately apply the SBR eco-friendly waterproofing material 30, impregnate the non-woven fabric 40 thereon, apply the eco-friendly waterproof resin 50 for secondary waterproofing, and then apply the top coating 60 containing the waste coffee bean powder. did it

Accordingly, as moisture and gas absorbed by the application object 10 through the degassing means 20 or remaining between the application object 10 and the SBR eco-friendly waterproofing material 30 are discharged to the outside of the waterproofing film, the SBR eco-friendly waterproofing material ( 30) and the adhesion between the application object 10 can be increased.

In addition, the SBR eco-friendly waterproofing material 30 is composed of BR latex, a dispersant, an anti-aging agent, and a filler. It has excellent properties and at the same time the adhesion is improved, so that it is possible to increase the waterproofing effect without cracking for a long time.

And by using the one containing the waste coffee bean powder as the top coating 60, it is possible to increase the heat shielding, non-slip (slip prevention) and UV blocking effect while being eco-friendly.

Hereinafter, such a configuration will be described in more detail with reference to the accompanying drawings. Here, the present invention is made over six steps, and since the steps of checking and finishing the thickness of the waterproofing film can be added, respectively, the previous steps are divided into 8 steps and will be described respectively. In addition, with respect to the SBR eco-friendly waterproofing material 30 used in the third step, each step will be first described, and then the action and effect thereof will be described in detail.

go. Step 1

The first step (S10), as shown in [Fig. 1], is a step of cleaning the surface of the application object 10. Here, the application object 10 refers to the surface of a building or structure on which waterproof construction is made, such as a roof or swimming pool surface to be waterproofed. In addition, in the first step (S10), by using a high-pressure inhaler to cleanly clean even foreign substances adhering to the surface of the application object 10, the SBR eco-friendly waterproofing material to be constructed on the surface of the application object 10 will be described later ( 30), it is desirable to be able to adhere without peeling or peeling off. In this case, any person skilled in the art to which the present invention pertains will readily understand that foreign substances that are not sucked by the high-pressure inhaler or adhered foreign substances must be removed using a cutter or the like.

In a preferred embodiment of the present invention, in the first step (S10), any foreign matter adhering to the application object 10, such as oil, dust, latency or other contaminants adhered to the surface of the application object 10, is all It is preferable to remove At this time, it is preferable to remove the foreign material using a grinder or high-pressure air, but when there is a foreign material that cannot be removed with such a tool, it is preferable to use a high-pressure washer. In addition, when cracks, dents, or corrosion of reinforcing bars occur on the surface of the object 10 to be applied, appropriate repair work should be performed, and the construction and non-construction surfaces should be partitioned with tape, etc. to prevent damage to the aesthetics. Any person skilled in the art to which the present invention pertains will readily recognize.

me. Step 2

The second step (S20) is a step of constructing the degassing means 20 on the expansion and contraction joints 11 formed on the application object 10 as shown in FIGS. 1 and 2 . Here, the expansion joint (Expansion Joint, construction) 11 refers to a joint formed in the application object 10 so that the concrete is expanded and contracted due to temperature or dry and wet changes on the concrete top plate, etc., so that internal deformation does not cause cracks. Such expansion joints 11, as shown in [Fig. 2], is shown as an example formed in the form of a grid on the application object (O), but is not limited thereto. In addition, depending on the application object 10, there may be some without the expansion joints 11. As such, the application object 10 without the expansion joints 11 has the same shape or other shape as the expansion joints 11 on the surface. The deaeration means 20 is constructed by forming a 'V' groove or a 'U' groove shape on the surface of the application object (0) in the form of a cross section.

On the other hand, the degassing means 20 is constructed on the expansion and contraction joint 11 as shown in FIG. 3 . At this time, the degassing means 20 is absorbed by the application object (O) or remaining between the application object (O) and the SBR eco-friendly waterproofing material 30 to be described later to be discharged to the outside of the waterproofing film. is a means for Accordingly, as the degassing means 20, the degassing means 20 constructed in the expansion joints 11 by using silica sand with excellent hygroscopicity, a net hose or an induction pipe having a porous shape so that moisture, moisture, and gas can pass therethrough. This allows moisture, gas, and moisture under the waterproofing membrane to be discharged out of the waterproofing membrane.

Accordingly, in a preferred embodiment of the present invention, the degassing means 20 is configured to extend from the outer edge of the expansion and contraction joint 11 as shown in FIG. 3 , and the extended end portion of the application object 10 is It is preferable to climb up on the inner wall surface (S) and to come to a higher position than the top coating (60). In addition, the degassing means 20 extends several guide lines at a predetermined distance between the outer edge and the inner wall surface S, so that moisture or moisture can be properly discharged to the outside through this extension part. do.

The degassing means 20 installed in this way is a degassing means constructed at a certain position as the molecular movement of moisture or gas inside the waterproofing film becomes active due to the increase in the surface temperature of the application object O by utilizing the expansion and contraction joints 11 . Moisture or gas expanded through the soft ridge of (20) can be guided to the outside of the waterproofing membrane, thereby preventing the waterproofing membrane from breaking or swelling in advance.

All. Step 3

In the third step (S30), as shown in [FIG. 1] and [FIG. 4], the SBR eco-friendly waterproofing material 30 is formed by applying the composition for a coating film waterproofing agent having a primer and a waterproof function on the surface of the above-described application object 10. is a step to At this time, the composition for waterproofing the coating film is composed of SBR latex, a dispersing agent, an anti-aging agent, and a filler, wherein the dispersing agent is a composition for waterproofing a coating film consisting of alcohol ethoxylate, quaternary cocoalkylamine, glycerin and distilled water, heat resistance and crack resistance It has excellent properties and at the same time the adhesion is improved, so that the waterproof effect can be maintained for a long time without cracking for a long time, which will be described later.

At this time, the SBR eco-friendly waterproofing material 30 is applied with a paint film waterproofing composition using a brush, roller, spray gun, etc., dried for about 2 to 4 hours after application, and then subjected to a subsequent process to prevent contamination on the surface It is preferable to do

On the other hand, in a preferred embodiment of the present invention, there is no problem when waterproofing the entire surface of the application object 10 in the third step (S30), but the surface of the application object 10 as shown in [Fig. 4(b)] When there is a risk that the edge of the SBR eco-friendly waterproofing material 30 is exposed to the outside, such as when waterproofing only a part, a groove 12 is formed on the surface of the application object 10, and the SBR eco-friendly waterproofing material 30 is formed in this groove 12. ), it is preferable to allow the edge portion of the SBR eco-friendly waterproofing material 30 to firmly adhere to the application object 10 so that it does not easily fall off or separate.

la. Step 4

The fourth step (S40) is a step of impregnating the nonwoven fabric 40 for improving the waterproof function and reinforcing structural rigidity, etc. on the SBR eco-friendly waterproofing material 30, as shown in Figs. 1 and 5. At this time, it is preferable to construct the nonwoven fabric 40 so that the SBR eco-friendly waterproofing material 30 is not completely hardened.

In a preferred embodiment of the present invention, the nonwoven fabric 40 uses a breathable non-woven fabric, so that the applied object O is influenced by UV rays received from the external environment, moisture and gas emitted from the inside, etc. It is desirable to form a waterproofing film while minimizing the In addition, the nonwoven fabric 40 makes it possible to eliminate cracks or drop-off factors that may occur inside and outside the waterproofing membrane.

mind. Step 5

The fifth step (S50) is a step of applying the eco-friendly waterproof resin 50 on the nonwoven fabric 40 as shown in FIGS. 1 and 5 . The eco-friendly waterproofing resin 50 is intended to perform a secondary waterproofing function together with the SBR eco-friendly waterproofing material 30 having a primary waterproofing function.

bar. Step 6

The top coating 60 is, as in [FIG. 1] and [FIG. 5], as the waterproof membrane is installed outside using an eco-friendly material, heat shielding and UV protection when exposed to sunlight, and non-slip to prevent slipping on the waterproof membrane (Anti-slip) to obtain the action. Such a top coating may use a conventional technique made of an eco-friendly material, and preferably, by adding waste coffee bean powder, it is eco-friendly and is preferably configured to increase the anti-slip effect as well as prevent surface aging of the waterproof membrane.

buy. Step 7

The seventh step (S70) is a step of applying the thickness of the waterproofing film to a predetermined set thickness, as shown in FIG. 1 . This is to check the thickness of the waterproofing film after construction until the sixth step (S60) and proceed to the next step if it is applied with a predetermined thickness, for example, 1.5 mm, and set the predetermined thickness if it is determined that the predetermined thickness has not been reached. Repeatedly check the waterproofing membrane construction and thickness until it becomes thick.

oh Step 8

The eighth step (S80) is a closing step, as shown in FIG. 1 . The finishing at this time is a step of finishing using a protective material and a protective mortar when not exposed on the top coating 60 . This finishing step utilizes conventional techniques to which the present invention pertains.

The present invention made as described above has excellent heat resistance and crack resistance through the above-described SBR eco-friendly waterproofing material, and at the same time has improved adhesion, so that the waterproof effect is maintained for a long time without cracking for a long time. As follows.

[Composition for waterproofing agent]

The composition for waterproofing film according to the present invention uses the technology registered in Korean Patent No. 10-2230767, and the composition is composed of SBR latex, dispersant, anti-aging agent, and filler, wherein the dispersant is alcohol ethoxylate, 4 Consists of cocoalkylamine, glycerin and distilled water.

In particular, the composition for the coating film waterproofing agent, based on the total weight of the composition for the coating film waterproofing agent, the SBR latex is 75 to 80% by weight, the dispersant is 5 to 10% by weight, the antioxidant is 5 to 10% by weight, the The filler consists of 5 to 8% by weight.

At this time, the dispersant is based on the total weight of the dispersant, the alcohol ethoxylate is 10 to 15% by weight, the fourth cocoalkylamine 10 to 20% by weight, glycerin 15 to 25% by weight, and distilled water 45 to 65% by weight made up of %.

In addition, the composition for a coating film waterproofing agent is used for having heat resistance and crack resistance.

Hereinafter, as an embodiment of the composition for a coating film waterproofing agent of the present invention, the components that may be included and specific proportions thereof will be described in detail as follows.

(Components of the composition for waterproofing film and their specific composition ratio)

One. SBR latex

SBR latex (Styrene Butadiene Rubber latex) is a representative new material synthetic rubber, which is copolymerized with styrene and butadiene in a ratio of 1:2 to 3 using a dispersant, and has a viscosity of 400 to 800 cps. It is known that it has a uniform quality compared to natural rubber (NR) and has excellent heat resistance, aging resistance, and abrasion resistance. When the SBR latex is used as a material for a waterproofing agent, elasticity is given, and watertightness is improved by interaction with materials to be described later, thereby improving waterproofing properties. However, since the SBR latex has strong cohesive force and elasticity, it must be used together with the following dispersant to soften the physical properties of the SBR latex and use it as a waterproofing agent for a coating film.

At this time, the SBR latex is characterized in that it contains 75 to 80% by weight based on the total weight of the composition, which is difficult to obtain sufficient waterproofness and elasticity when the SBR latex contains less than 75% by weight, and 80% by weight If it is contained in excess, hardness increases, fluidity at room temperature decreases, the strength of the waterproof coating film after drying decreases, and external plate defects such as whitening may occur.

2 dispersant

The dispersing agent functions to uniformly improve the physical properties of the coating film and to help uniform swelling, and to improve the spreadability by reducing the surface tension of the coating film surface. In particular, in the present invention, it serves to soften the strong physical properties of the SBR latex to enable its use as a coating film waterproofing agent.

At this time, the dispersant is characterized in that it contains 5 to 10% by weight based on the total weight of the composition. This is because, when the amount exceeds 10% by weight, the manufacturing cost increases, and the physical properties of the composition for a coating film waterproofing agent are too thin and the adhesiveness is weakened, making it impossible to use as a waterproofing agent.

In particular, in the present invention, alcohol ethoxylate, quaternary cocoalkylamine, glycerin and distilled water are applied as the dispersant to prevent cracking for a long period of time. More preferably, the alcohol ethoxylate is 10 ~15% by weight, the fourth cocoalkylamine 10 ~ 20% by weight, glycerin 15 ~ 25% by weight, it is best composed of 45 ~ 65% by weight of distilled water.

In other words, the dispersant of the present invention is intended to exhibit the most excellent dispersing power for organic materials, so that cracks do not occur even after the coating film waterproofing composition is installed, and also have an excellent waterproofing effect. A mixture of ethoxylate (alcohol ethoxylat) and quaternary coco alkylamine (Quaternary coco alkylamine) is used, wherein the alcohol ethoxylate is 10 to 15 wt% based on the total weight of the dispersant 10 wt% When it is contained in less than 15% by weight, it is difficult to exert the efficacy as a surfactant, and mixing between the materials constituting the dispersant is not easy.

The fourth cocoalkylamine is characterized in that it is contained in an amount of 10 to 20% by weight based on the total weight of the dispersant. Mixing is not easy, and when it exceeds 20% by weight, there is a risk of lowering the effectiveness of the dispersant itself.

The glycerine (Glycerine) is a material that adds plasticity, and is characterized in that it is included in 15 to 25% by weight based on the total weight of the dispersant. When it is contained in excess, there is a fear that the absorption power increases and the efficacy of the dispersant itself decreases.

The water is to facilitate mixing of the materials and to more easily mix the dispersant having this configuration in the composition for a coating film waterproofing agent. When the content is less than 45% by weight, mixing between the materials is not easy, and when it exceeds 65% by weight, the dispersant itself becomes too dilute. there will be

As described above, the dispersing agent applied to achieve the object of the present invention is characterized in that it consists of specific components, which has very excellent dispersing power for organic materials, and when a dispersant of other composition is applied, the waterproof adhesive itself cracks. This makes it impossible to use as a waterproof adhesive because it has no waterproof effect.

3 antioxidants

When mixed with the SBR latex, the antioxidant is a material that prevents oxidation by forming a hydrophobic property and blocking oxygen in the atmosphere. It is preferable to apply any one or more of potassium salt and talc.

At this time, the antioxidant is characterized in that it is included in 5 to 10% by weight based on the total weight of the composition. This is because a shock phenomenon with the materials occurs.

4 filler

The filler is a material that is added to increase the adhesive strength by increasing the absorption rate as it is also involved in the compressive strength of the composition.

At this time, the filler is characterized in that it is contained in an amount of 5 to 8% by weight based on the total weight of the composition. It is because the mixing of the is not easy.

It is preferable to use any one or more of calcium carbonate, talc, fat sugar, and barium as a filler commonly used in such rubber-based waterproofing agents.

The composition for waterproofing coating film of the present invention can be used for various structures such as glass, acrylic, iron plate, paper, wood, etc. as it has a waterproof surface that can sustain the waterproof effect for a long time without physical properties, particularly, long-term cracking phenomenon. , dipping coating or spray coating, roll coating, spin coating, bar coating, flow coating, curtain coating, knife coating, vacuum deposition, ion plating, plasma deposition method by any one method selected from the coating film waterproofing composition Coated and installed.

In addition, since the composition for a coating film waterproofing agent is white, a water-soluble dye may be added to be used in color when a color is required, which can be used without any significant influence on the efficacy and function as a coating film waterproofing agent.

As such, the composition for coating film waterproofing agent undergoes primary curing within about 3 hours after construction. It has a waterproof effect by aggregating into water droplets, and at 80°C or lower, it has heat resistance and crack resistance at the same time.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples, but these Examples and Experimental Examples are for illustrative purposes only and are not intended to limit the protection scope of the present invention.

< Example 1, 2> Preparation of compositions 1 and 2 for waterproofing agent for coating film of the present invention

It is composed of styrene and butadiene mixed in a content of 30:70, and is composed of 80% by weight of SBR latex having a viscosity of about 500cps, alcohol ethoxylate, quaternary cocoalkylamine, 7% by weight of a dispersant consisting of glycerin and distilled water, 7 wt% of talc (anti-aging agent) and 6 wt% of calcium carbonate (filler) were prepared and mixed to prepare compositions 1 and 2 for waterproofing agents. In this case, the weight ratio of the constituent materials of the dispersant to be applied is disclosed in [Table 1] below.

alcohol ethoxylate

quaternary cocoalkylamine
glycerin
Distilled water
Example 1 (Composition 1 for waterproofing film)

10% by weight

10% by weight
15% by weight
65% by weight
Example 2 (Composition 2 for waterproofing agent for coating film)

15% by weight

20% by weight
20% by weight
45% by weight

< comparative example 1> For coating film waterproofing agent composition 3 Produce

A composition 3 for a coating film waterproofing agent comprising 80% by weight of SBR latex, 7% by weight of polyoxyethylene sorbitol oleate (emulsifier), 7% by weight of talc (anti-aging agent), and 6% by weight of calcium carbonate (filler) was prepared.

< comparative example 2, 3> Preparation of compositions 4 and 5 for coating film waterproofing agent

It was prepared in the same manner as in Example 1, but as a dispersant, as shown in Table 2 below, by weight ratio of the constituent materials of the dispersant, compositions 4,5 for coating film waterproofing agents were prepared.

alcohol ethoxylate

quaternary cocoalkylamine
glycerin
Distilled water
Comparative Example 2 (Composition 4 for waterproofing agent for coating film)

20% by weight

5% by weight
15% by weight
60% by weight
Comparative Example 3 (Composition 5 for waterproofing agent for coating film)

15% by weight

15% by weight
30% by weight
40% by weight

< Experimental example 1> Check crack phenomenon

1. Experimental method

After the composition 1 for waterproofing coating agent prepared in Example 1 and the composition 3 for coating coating waterproofing agent of Comparative Example 1 were applied to a part of the wall surface, a cracking phenomenon was observed after 3 days had elapsed.

2. Experimental results

As shown in the experimental result [Fig. 6], although the composition for waterproofing coating of Comparative Example 1 is hydrophobic, the surface of the coating film cracks as the moisture contained in the material evaporates after construction due to the cohesive force caused by the strong elasticity of the SBR latex. On the other hand, it was confirmed that the composition for waterproofing coating film of the present invention did not show cracking even when exposed for a long time and had excellent adhesion, so it was maintained for a long time as shown in [Fig. It was found that the durability of the waterproofing agent was maintained.

< Experimental example 2> heat resistance, crack resistance , adhesion strength ( adhesion ) Confirm

1. Experimental method

The physical properties of the coating film waterproofing agents 1 and 2 prepared in Examples 1 and 2 and the coating film waterproofing agents 4 and 5 prepared in Comparative Examples 2 and 3 were measured, and the results are shown in [Table 3] below.

* Waterproof: Apply 2mm to the slate plate and observe the condition after immersion in water for 6 months. ○ - Maintains initial state without peeling, △: Cracks in some parts.

* Adhesive strength (kgf/㎠): Measured according to ASTM D 4541-89 method.

2. Experimental results

As a result of the above experiment, it was shown in [Table 3] below.

Heat resistance (80℃)

waterproof
Adhesive strength (kgf/㎠)


Workability
Early

Decrease rate after thermal aging
Example 1

nothing strange
○
23
One
Good
Example 2

nothing strange
○
25
2
Good
Comparative Example 2

cracking
△
20
10
Good
Comparative Example 3

cracking
△
-
-
error

As shown in [Table 3], the physical properties of the compositions 1 and 2 for the coating film waterproofing agent prepared in Examples 1 and 2 and the compositions 4 and 5 for the coating film waterproofing agent prepared in Comparative Examples 2 and 3 were measured. The compositions for coating film waterproofing agents of Examples 1 and 2 have heat resistance and are waterproof for a long time without cracking even in a submerged state, thereby confirming that they have crack resistance. . On the other hand, in the case of Comparative Example 2, cracks occurred and the waterproofness was low, and it was confirmed that the adhesiveness was inferior after thermal aging. It was confirmed that the workability was significantly lowered because it was difficult to measure the adhesive strength by itself.

As described above, by the composition for a coating film waterproofing agent of the present invention, it is possible to provide a coating film waterproofing agent having a waterproof surface that is excellent in heat resistance and crack resistance, and at the same time adhesion is improved, so that the waterproof effect can be maintained for a long time without cracking for a long period of time.

10: application object
11: expansion joint
20: degassing means
30: SBR eco-friendly waterproofing material
40: non-woven fabric
50: eco-friendly waterproof resin
60: top coating

Claims (8)

A first step (S10) of cleaning the surface of the application object 10 to be waterproofed; A degassing means 20 made of at least one of silica sand, a net hose, and a perforated pipe is constructed on the expansion and contraction joint 11 formed on the surface of the application object 10, and the constructed end is exposed outside the edge of the waterproof surface to prevent moisture and gas a second step (S20) of discharging out of the waterproofing membrane; It is composed of SBR latex, dispersant, anti-aging agent, and filler, and the dispersant is a composition for coating film waterproofing agent consisting of alcohol ethoxylate, quaternary cocoalkylamine, glycerin and distilled water. A third step of forming (30) (S30); a fourth step (S40) of integrally configuring the nonwoven fabric 40 on the SBR eco-friendly waterproofing material 30 to be impregnated; a fifth step (S50) of applying an eco-friendly waterproof resin 50 on the nonwoven fabric 40; and a sixth step (S60) of top coating (60) for eco-friendly UV protection containing waste coffee bean powder on the eco-friendly waterproof resin (50);
The SBR eco-friendly waterproofing material 30,
SBR-based, characterized in that it is applied to penetrate into the grooves 12 formed on the surface of the application object 10 so as not to be applied to the entire surface of the application object 10 and to be located at the edge of the SBR eco-friendly waterproofing material 30 of waterproof construction method.
In claim 1,
The expansion joint 11 is,
When it is not constructed on the application object 10, when it is not manufactured, the width cross section is formed by processing in a lattice form on the surface of the application object 10 in a 'V' groove or 'U' groove shape SBR-based waterproofing method.
In claim 1,
The degassing means 20,
It is characterized in that the end portion extending from the expansion joint 11 formed in a mesh shape and exposed outside the edge of the waterproof surface climbs up on the inner wall surface of the application object 10 and is formed to come to a higher position than the top coating 60, characterized in that SBR-based waterproofing method.
delete In claim 1,
The composition for the coating film waterproofing agent,
Based on the total weight of the composition for the coating film waterproofing agent,
The SBR latex is 75-80% by weight,
The dispersant is 5 to 10% by weight,
The antioxidant is 5 to 10% by weight,
The SBR-based waterproof construction method, characterized in that the filler is 5 to 8% by weight.
In claim 1,
The dispersant is based on the total weight of the dispersant,
The alcohol ethoxylate is 10 to 15% by weight,
10 to 20% by weight of the fourth cocoalkylamine,
15-25% by weight of glycerin, and
SBR-based waterproofing construction method, characterized in that 45 to 65% by weight of distilled water.
In claim 1,
The composition for the coating film waterproofing agent is an SBR-based waterproofing construction method, characterized in that it has heat resistance and crack resistance.
In any one of claims 1 to 3, 5 to 7,
After the sixth step (S60),
a seventh step (S70) of measuring the thickness of the waterproofing film and applying a predetermined thickness; and
An SBR-based waterproofing construction method, characterized in that the 8th step (S80) of finishing the waterproofing construction surface with a protective material and a protective mortar is further included.

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