KR102261647B1 - Painting Method of Waterproof Flooring Construction Without Requiring Removal of Old Film - Google Patents

Abstract

The present invention relates to a method for constructing waterproof flooring, which does not require removal of an old film to provide convenience. According to the present invention, a waterproof flooring composition comprises a coating composition comprising a main agent and a curing agent, and pozzolanic reactants. The main agent includes 40 to 50 parts by weight of an active hydrogen to containing resin, 20 to 40 parts by weight of ionized water, 02 to 2 parts by weight of a catalyst, and 10 to 30 parts by weight of solvents, wherein when mixing the curing agent and the main agent, the equivalent ratio is the number of equivalents containing an oxirane ring : the number of equivalents of active hydrogen amine = 1 : 07 to 11.

Description

{Painting Method of Waterproof Flooring Construction Without Requiring Removal of Old Film}

The present invention relates to a waterproof flooring material and a construction method therefor, and more particularly, to a waterproof flooring material and a method for installing the same without removing an old coating film.

In general, when installing waterproof flooring, the old coating is removed and a new waterproofing flooring is applied. However, numerous wastes generated when removing the old coating, delay in construction period, excessive construction cost, environmental problems due to noise and dust generated when removing the old coating, and civil complaints from residents are causing great problems in construction. is the reality

Korean Patent No. 10-1575125 (Announced on December 9, 2015)

https://m.blog.naver.com/PostView.nhn?blogId=lclc123&logNo=40142819335&proxyReferer=https:%2F%2Fwww.google.com%2F (Released October 26, 2011)

The inventor of the present invention has received a patent for a water-soluble hybrid high-performance coating composition in Korea Patent No. 10-1575125, and the present invention is a waterproofing flooring composition comprising the composition of this patent, which does not require removal of the old coating during construction. It aims to provide a flooring composition and its construction method.

The waterproof flooring composition according to the present invention includes a coating composition including a main agent and a curing agent, and a pozzolan reactive material.

The subject is, 40-50 parts by weight of an active hydrogen-containing resin; 20-40 parts by weight of ionized water; 02 to 2 parts by weight of the catalyst and 10 to 30 parts by weight of the solvent.

The curing agent, 30 to 45 parts by weight of an oxirane ring-containing resin; 10-20 parts by weight of ionized water; 25-35 parts by weight of an extender pigment; 05-15 parts by weight of hydrophilic organic functional silane; It contains 10-20 parts by weight of a colorant and 1-6 parts by weight of a hydrophilic solvent.

The active hydrogen-containing resin is selected from the group consisting of polyamine resins and polyamide resins.

The catalyst has a molecular weight of 50 to 1000, and is an aliphatic or aromatic tertiary amine.

The solvent is one or a mixture of two selected from the group consisting of dimethyl carbonate and t-butyl acetate.

The oxirane ring-containing resin is one or a mixture of two selected from the group consisting of a diphenylolpropane A-type oxirane ring-containing resin and an oxirane ring-containing resin having two or more oxirane ring-containing groups in the molecule, The equivalent weight of the oxirane ring is 340 to 900 g/eq.

The extender is selected from the group consisting of fly ash slag, silica fume, calcium carbonate and barium sulfate.

The hydrophilic organic functional group silane is aminopropyltrimethoxysilane, and the hydrophilic solvent is one or a mixture of two selected from the group consisting of N-methylpyrrolidone and dimethylformamide.

When the curing agent and the main agent are mixed, the equivalent ratio is the number of equivalents containing an oxirane ring: the number of equivalents of active hydrogen amine = 1:07 to 1:11.

The active hydrogen-containing resin may have an amine equivalent of 400 to 1000 g/eq.

The viscosity of the mixture of the curing agent and the main agent may be 100 ~ 1500 cps at 25 ℃.

The pozzolanic reactant may be selected from the group consisting of tuff, volcanic ash, silicate clay, diatomaceous earth, obsidian, fly ash, silica fume, and rice husk ash.

The waterproof flooring composition according to the present invention may further include an irritant, and the irritant may be selected from the group consisting of _{NaOH, KOH and [Ca(OH) 2} + CaSO _{4 ].}

The stimulant may be oyster shell fine powder.

The coating composition may be 90 to 100 parts by weight, the pozzolan reactant may be 10 to 20 parts by weight, and the irritant may be 3 to 8 parts by weight.

A method of constructing a waterproofing flooring composition according to the present invention comprises: a first step of mixing a coating composition and a pozzolan reactive material to produce a coating; a second step of cutting the composition film to a predetermined interval and depth; and a third step of applying the coating material to the old coating film.

A waterproofing flooring composition construction method according to another aspect of the present invention comprises: a first step of mixing a coating composition and a pozzolan reactive material to produce a coating; A second step of applying a pretreatment agent mixed with water-soluble silane and water in a weight ratio of 1:9 to the old coating film; and a third step of applying the coating material to the old coating film.

According to the present invention, it is possible to provide a waterproof flooring composition and a construction method using the composition, which penetrate deeply into a raised or cracked old coating film and increase watertightness without changing the adhesion of the old coating film even if the old coating film is not removed during construction of the waterproof flooring material. have.

Since it is not necessary to remove the old coating, it is possible to realize the convenience of construction, a significant reduction of waste, a significant reduction of the construction period, a reduction of the construction cost, and the improvement of the working environment.

Hereinafter, the present invention will be described in detail. First, a detailed description of the coating composition will be given, and then the waterproof flooring composition and construction method according to the present invention will be described.

The water-soluble hybrid high-performance coating composition according to the present invention is composed of a two-component type of a main agent and a curing agent, more specifically, an active hydrogen-containing resin; ionized water; Subjects including catalysts and solvents; and an oxirane ring-containing resin; ionized water; body pigment; hydrophilic organofunctional silane; A curing agent including a colorant and a hydrophilic solvent is included.

The curing agent is a composition containing an oxirane ring-containing resin as a main component, an oxirane ring equivalent of 340 to 900 g/eq, and 30 to 45 parts by weight of an oxirane ring-containing resin (in terms of solid content, hereinafter the same); 10-20 parts by weight of ionized water; 25 to 35 parts by weight of an extender pigment having a particle size of 20 micrometers or less; 0.5 to 1.5 parts by weight of a hydrophilic organic functional silane having a molecular weight of 100 to 1000 (in terms of solid content, hereinafter the same); 10 to 20 parts by weight of a colorant representing a color; and 1 to 6 parts by weight of a hydrophilic solvent.

The main agent is an active hydrogen-containing resin having an amine equivalent weight of 400 to 1000 g/eq, for example, 40 to 50 parts by weight of a modified aliphatic amine resin, a water-dispersed polyamine resin, or a water-dispersed polyamide resin (in terms of solid content, hereinafter the same); 20-40 parts by weight of ionized water; 0.2 to 2 parts by weight of a catalyst that promotes the reaction when the main agent and the curing agent are mixed; and 10 to 30 parts by weight of an environmentally friendly solvent that significantly reduces viscosity and increases affinity with pigments.

The viscosity of the mixture of the curing agent and the main agent is characterized in that 100 ~ 1500cps (25 ℃).

In addition to the above components, the curing agent and the main agent are, if necessary, a dispersing agent, an antifoaming agent, a stabilizer, a leveling agent, a gas absorbent, a moisture absorbent, a tackifier, a catalyst, a wetting agent, a thickener, and a rheology used for coating a conventional water-soluble emulsion composition. ) Control agents, preservatives, anti-freezing agents, anti-virus agents, pH adjusters, rust inhibitors, UV absorbers, antioxidants and emulsifiers may be added alone or in combination, and the range is not particularly limited.

The function as a coating agent can be expressed by mixing the curing agent and the main agent in a certain ratio with each other and mixing.

When applying the coating of the curing agent and the main agent, the equivalent ratio is preferably the number of equivalents containing oxirane ring: the number of equivalents of active hydrogen amine = 1:0.7 to 1:1.1, more preferably, 1:0.85 to 1:1.0 is more suitable Do. If the ratio of the number of equivalents of active hydrogen amine of the curing agent to the number of equivalents containing the oxirane ring is less than 0.7, the curing density is low and the dryness, hardness, adhesion, and barrier properties are deteriorated. Examples of repair coating or subsequent coating after a certain period of time has elapsed after application Therefore, when oil-based urethane or oil-based oxirane ring-containing resin is applied, most of the coated surface melts and the coating peels off. In addition, when the oxirane ring-containing equivalent number: active hydrogen amine equivalent number exceeds 1:1.1, a large amount of unreacted active hydrogen of the amine remains, causing problems in the weather resistance and water resistance of the coating.

The main content of the reaction mechanism for multiple curing and post curing is to maximize the effect of post curing by reducing the steric hindrance caused by the complete reaction by controlling the ratio of the curing reaction, and to develop a reaction structure that can form strong hydrogen bonds. This is to improve the adhesion between the layers. Second, after silanol is formed by hydrolysis of the water-soluble organic functional group silane compound, a urethane or oxirane ring-containing bond is formed with the surplus isocyanate of the subsequently applied urethane or oxirane ring-containing flooring material, and at the same time, it penetrates deep into the cement concrete to form silicon Forms a siloxane bond with the compound.

The raw materials used in the above invention are very economical and readily available, and the price is also economical compared to similar raw materials.

Hereinafter, components constituting the water-soluble hybrid high-performance coating composition applied to all concrete surfaces will be described. The unit is parts by weight.

The curing agent is an oxirane ring-containing resin having an oxirane ring-containing equivalent of 340 to 900 g/eq. Diphenylolpropane A-type oxirane ring-containing resin, diphenylolpropane F-type oxirane ring-containing resin, brominated diphenylolpropane One or a mixture of two or more from the group consisting of type A oxirane ring-containing resin and oxirane ring-containing resin having two or more oxirane ring-containing groups in the molecule, which reacts with the main agent to adhere to the concrete surface; As a component that improves solvent resistance, alkali resistance, etc., it is preferable to use 30 to 45 parts by weight of the oxirane ring-containing resin in the curing agent in terms of solid content. If the content of the oxirane ring-containing resin is less than 30 parts by weight, problems in adhesion and solvent resistance of the final aqueous cured coating occur, and when the amount of the oxirane ring-containing resin exceeds 45 parts by weight, the fluidity of the curing agent is reduced As a result, the workability as a paint deteriorates, and when the curing agent is mixed, the coating is applied too thickly, so that the coating is formed before the water evaporates before the water resistance is rapidly deteriorated. As a specific example of an oxirane ring-containing emulsion composition solution in which the oxirane ring-containing resin of the diphenylolpropane A system or diphenylolpropane F system is forcibly emulsified, PSR-461, PSR-462 (high solid oxirane ring-containing emulsified resin), EM-101-50, KEM-172-50, KEM-128-70, KEM134-60, KEM-019-50 (trade name of Kukdo Chemical), etc. In the present invention, polyferon's PSR-series products were used.

The hydrophilic organic functional group silane has a flexible molecular structure and high permeability of a low molecular weight as an adhesion promoter, and penetrates into the surface of organic compounds such as coatings or flooring materials and inorganic compounds such as cement concrete to promote interlayer adhesion. A role in the present invention is to form a silanol by penetrating to a place where the oxirane ring-containing resin and the polyamine resin component cannot penetrate, causing a hydrolysis reaction. Thereafter, the formed silanol reacts with the hydroxyl group of the self-curing acrylic emulsion composition and the hydroxide or metal compound on the concrete surface to create a hardened structure of the networking structure, exhibiting strong adhesion, and further increasing the blocking function. It is preferable to use an amount of 0.5 to 1.5 parts by weight in terms of solid content in the curing agent. When the content of the hydrophilic organic functional group silane exceeds 1.5 parts by weight, the price of the curing agent increases, the thixotropic thickening phenomenon occurs, the fluidity decreases, and the color separation occurs when mixed with the main agent. When the content of the hydrophilic organic functional silane is less than 0.5 parts by weight, the adhesion between the coating layer and the surface of the cement concrete deteriorates.

Examples of the hydrophilic organic functional group silane include fluorotrimethoxysilane, methyltriacetoxysilane, aminopropyltrimethoxysilane, aminopropyltriethoxysilane, fluoropropyltriethoxysilane, aminopropylmethyldimethoxysilane, β( aminoethyl)-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane and glycidoxypropyltriethoxysilane It can be used in combination or in combination of two or more species. It is even more preferable to use water-soluble methyltriacetoxysilane, aminopropyltrimethoxysilane, methyltriethoxysilane, etc., which are easy to apply. Specific examples include PROTECTOSIL SC30, DYNASILAN F8815 (EVONIK), APTES, WD-50 (KCC), BS-290 (WACKER), Z6689 (DOW CORNING), and other companies with similar characteristics (Tongyang Silicon, KCC). , DOW CORNING, WACKER, etc.) can also be used.

It is preferable to use 25 to 35 parts by weight of the extender pigment having a particle size of 20 micrometers or less, which is used in the curing agent to increase hardness and improve economic efficiency. As extender pigments that can be used, there are fly ash slag, silica fume, calcium carbonate, barium sulfate, and the like, and in the present invention, OMYCARB-5 calcium carbonate from Omia Korea was used.

It is preferable to use 10 to 20 parts by weight of the color tint agent. As a toner that can be used, a water-only colorant manufactured by NCP and Taesol Co., Ltd. may be used, and a water-soluble colorant manufactured by other companies may be used. In the present invention, TWA-4430, a water-soluble green colorant manufactured by Taesol Co., Ltd., was used.

The hydrophilic solvent can form a stable coating without breaking the cured coating of the emulsion composition even at a low curing temperature, and performs a function of enhancing the effect of preventing freezing in winter. It is preferable to use 1 to 6 parts by weight of the content. It should be added or subtracted according to the season or the type and content of the resin contained.

When the content of the hydrophilic solvent used is less than 1 part by weight, when the temperature is low, such as in winter, it is difficult to form a coating, so the coating crumbles and it is difficult to obtain a normal coating. When the content of the hydrophilic solvent is used in excess of 6 parts by weight, the drying is slow and the coating tends to deteriorate the chemical properties of Representative examples of the hydrophilic solvent include polyalkylene glycol dialkyl ethers such as dimethyl acetamide, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, and dipropylene glycol dimethyl ether; polyalkylene glycol monoalkyl ether acetates such as ethylene glycol methyl ethyl acetate, propylene glycol methyl ethyl acetate, and diethylene glycol methyl ethyl acetate; ethers such as 1,2-dimethoxyethane, tetrahydrofuran, and dioxane; N-methylpyrrolidone, dimethylformamide, ethylene carbonate, etc. are mentioned, These can be used individually or in combination of 2 or more types. In particular, it is preferable to use N-methylpyrrolidone, dimethylformamide, or the like.

The content of ionized water in the curing agent is preferably 10 to 20 parts by weight. If less than 10 parts by weight of ionized water is used, the viscosity is high and workability may be affected. If ionized water is used in excess of 20 parts by weight, it is mixed with the main agent. When the solid content is lowered, there may be a problem that the coating application must be repeated several times.

It is preferable to use 20 to 40 parts by weight of ionized water in the main ingredient. If less than 20 parts by weight of ionized water is used, the viscosity is high and workability may be affected. If ionized water is used in excess of 40 parts by weight, it is mixed with the curing agent. Since it forms a coating thickness that is difficult to show the characteristics of a high-solid coating, there may be a disadvantage that the coating application must be repeated several times.

The active hydrogen-containing resin among the main components of the subject matter may be selected from the group consisting of a modified aliphatic amine resin or a water-dispersed polyamine resin and a water-dispersed polyamide resin.

In the present invention, the active hydrogen-containing resin reacts with the curing agent to improve adhesion, and has a great influence on increasing solvent resistance and chemical resistance. The active hydrogen-containing resin in the main subject, for example, a modified aliphatic amine resin or water-dispersed polyamine resin or water-dispersed polyamide resin has an amine equivalent of 400 to 1000 g/eq, and is preferably used in 40 to 50 parts by weight, the content If it is less than 40 parts by weight, hardening of the oxirane ring-containing resin does not occur properly, and adhesion and solvent resistance, etc. tend to be deteriorated. If it is more than 50 parts by weight, the viscosity is too high and workability is very bad or amine brushing occurs. White sediment may appear on the exterior of the coating. In the present invention, Polyferon's PSA361 and PSA362 were used.

It is preferable to use 0.2 to 2 parts by weight of an aliphatic or aromatic tertiary amine having a molecular weight of 50 to 1000 as a catalyst for accelerating the film formation of the main agent and the curing agent, and triethylamine, dibutylmethyl as the aliphatic or aromatic tertiary amine There are amine, dibutylphenoxyamine, tertiary polyamine, diethylphenoxyamine, triethanolamine, dipropylethylamine, and the like, and trade names include AMP95, KH30, ALPHAMINEN41, and the like, and KH30 was used in the present invention. If the content of the catalyst is less than 0.2, the effect of the catalyst is hardly exhibited, so that the curing of the coating film is slow and water resistance and hardness are deteriorated. If the content of the catalyst is more than 2, yellowing occurs quickly and the gloss is deteriorated.

The solvent used in the subject enables the fluidity and smoothness of an eco-friendly solvent coating that does not violate VOC regulations, high-solidification of the coating, and plays a role in preventing color separation by exhibiting affinity with the pigment. It is preferable to use 10 to 30 parts by weight of the solvent used in the main ingredient, and when used in less than 10 parts by weight, the fluidity of the coating is lowered, so the smoothness of the coating film is very bad, water resistance is bad, and the viscosity is high. , when used in excess of 30 parts by weight, the function as a high-solid coating is lost, and the coating film thickness is not formed thick, thereby losing the function of a high-performance coating agent. In the present invention, at least one of dimethyl carbonate, parachlorobenzotrifluoride, and t-butyl acetate was mixed and used as the solvent.

Hereinafter, preferred embodiments of the present invention will be described in detail. The terms or words used in the present specification and claims are not limited to a conventional or dictionary meaning, and should be interpreted as meanings and concepts consistent with the technical matters of the present invention.

The embodiments and drawings described in this specification are preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so there may be various equivalents and modifications that can be substituted for them at the time of the present application.

Preparation Examples 1 to 8 - Preparation of curing agent

In Preparation Examples 1 to 8 (B1 to B8 in Table 1), the composition of the oxirane ring-containing resin and the hydrophilic organic functional group silane in the curing agent was changed and uniformly stirred as shown in Table 1 below.

Preparation Examples 9 to 19 - Preparation of subject matter

In Preparation Examples 9 to 19 (A1 to A11 in Table 1), the main agent was prepared with the composition shown in Table 2 below.

Examples 1-24: Preparation of coating compositions

Coating compositions of Examples 1 to 24 were obtained by mixing the curing agent and the main agent obtained in Preparation Example without overlap according to the mixing ratios of Tables 3 and 4, respectively. This coating composition was basically applied to a glass plate in a WET state of 200 μm to prepare a specimen, and if a specimen other than the basic specimen is required, a specimen was prepared according to the test method. Basic physical properties, adhesion, solvent resistance, water resistance, dry to touch, etc. of the coating film dried at 25°C for 48 hours were tested. In Examples 1-24 and Comparative Examples 1-24, the curing agent and the main agent prepared within the upper and lower limits of each composition were mixed with an oxirane ring:active hydrogen equivalent ratio as shown in Tables 3 to 6 to obtain physical properties Changes were compared and tested.

* Method of measuring physical properties

<Adhesiveness test method>

After 24 hours (20°C) after the coating was applied, the coating material was applied and cured (cured at 20°C * 7 days in a well-ventilated place) to make a test specimen for the construction system structure test specimen of the flooring material.

The adhesion test evaluated adhesiveness by the 90 degree peel adhesive force (unit: N/25mm) by the average value cut out into the rectangle of width 25mm, and tested three times. At this time, when the material destruction of the concrete base material appears because of excellent adhesion, it is judged as “good”, when the material destruction of the coating resin layer appears as “bad”, and when the material destruction of the coating layer appears as “bad”.

* For the base layer specimen, a concrete block of 390mm*180mm*150mm was used.

<Dryness test method>

Measured according to KSM 5000-2511.

Apply on a glass plate using an applicator so that the thickness of the wet coating becomes 0.038 mm, and then dry in a well-ventilated place at a temperature of 25°C and a humidity of 50 parts by weight in an atmosphere. The coating test is conducted at a point more than 1 cm away from the tip of the test piece, and when the fingertip lightly touches the coating, if the coating composition does not smear on the finger, it is judged to be dry to the touch.

<Solvent resistance test method>

After immersing the test specimen in xylene based on a dry coating thickness of 50 micrometers on a glass plate, it is rubbed with a cloth to calculate the number of times of rubbing at the time of coating peeling. A large number of rubs indicates relatively good solvent resistance, and if it is rubbed more than 50 times, it can be applied simultaneously as a water-based as well as oil-based oxirane ring-containing, urethane or oxirane ring-containing flooring or flooring coating.

<Measuring method of mixed viscosity>

Measured according to ASTM D-4212

<Pencil hardness>

Measure according to KS M ISO 15184:2002 with a standard pencil for hardness measurement.

<Water resistance test method>

For the water resistance test, it was immersed in tap water for 30 days to compare the adhesion of the coating film and the generation of air bubbles.

As shown in the experimental results, the specimen tested with the water-soluble hybrid high-performance coating composition according to the present invention exhibited excellent physical properties such as dryness, adhesion, solvent resistance, water resistance, and hardness at the same mixing ratio as in Examples, and the oil-based coating and Even in comparison, they show similar or equal or higher physical properties. And it can be seen that, in the case of Comparative Examples 1 to 24, which deviates from the specification of the composition or the equivalent ratio deviates from the specification, all of the compositions fall short of the specification or have insufficient physical properties.

The waterproof flooring composition according to the present invention is produced by mixing a pozzolan reactive material in the coating composition having the above-described composition. According to the present invention, an adhesive may be further mixed and used.

Examples of the adhesive that can be used include EVA (ETHYLENE VINYL ACETATE COPOLYMER), SELF CURING ACRYL EMULSION WATERSPLUBLEPOLYMER, and the like.

The pozzolanic reactant refers to a finely divided substance that does not have hydraulic properties by itself, but can slowly react with potassium hydroxide or sodium hydroxide dissolved in water at room temperature to form a water-insoluble compound.

A representative pozzolanic reactant is diatomaceous earth, which is a porous soil produced by accumulating the remains of diatoms, which are very fine single-celled organisms, under the seabed or lake. In general, it has a white clay appearance, and it is light and has excellent absorption.

Pozzolanic reactants include tuff, silicate clay, obsidian, fly ash, silica fume, rice husk ash, and the like, in addition to diatomaceous earth.

The pozzolanic reactant is a latent hydraulic substance that has no hydraulic properties by itself, and when it comes into contact with water, an acidic film of a dense water-impermeable layer is formed on the particle surface. This film is processed into a material with hydraulic properties by destroying the acid film by using NaOH, KOH, [Ca(OH) ₂ +CaSO _{4 ], etc., which are strongly alkaline irritants.} As the irritant, for example, fine powder of closed oyster shell may be used.

Stimulants that can be used include SODIUM SILICATE, POTASSIUM SILICATE, LITHIUM SILICATE, NaOH, KOH, [Ca(OH) ₂ +CaSO ₄ ] and the like.

By this reaction, watertightness increase, durability increase, bleeding reduction effect, and alkali aggregate reaction inhibitory effect can be exhibited.

Soluble components such as _{SiO 2} and Al ₂ O ₃ eluted from the pozzolan reactant _{slowly react with Ca(OH) 2 generated when cement constituent compounds C 3} S, C ₂ S, etc. are hydrated to form insoluble calcium silicate hydrate ( CSH gel) or calcium aluminate hydrate (CAH gel) to make the tissue more dense. The reaction formula is as follows.

Ca(OH)2 + [SiO2, Al2O3] = 3CaO·2SiO _2· 3H ₂ O

3CaO·Al ₂ O ₃ ·6H ₂ O

Substances used as pretreatment coating materials Example 1 Comparative Example 1 Comparative Example 1 Comparative Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 Composition of pretreatment coating material Water-soluble hybrid high-performance coating composition 100.0 100.0 100.0 100.0 acrylic primer 100.0 100.0 100.0 100.0 Urethane oil-based primer 100.0 100.0 100.0 100.0 Epoxy Primer 100.0 100.0 100.0 100.0 pozzolanic material diatomaceous earth 15.0 15.0 0.0 15.0 15.0 15.0 0.0 15.0 15.0 0.0 15.0 15.0 0.0 Lung oyster shell fine powder 5.0 5.0 0.0 5.0 5.0 0.0 5.0 5.0 0.0 5.0 5.0 0.0 Sum 120.0 115.0 105.0 100.0 120.0 120.
0 115.0 100.0 120.0 115.0 105.0 100.0 120.0 115.0 105.0 100.0 adherence Urethane waterproofing material 1.42 1.38 1.26 1.4 0.56 0.84 0.66 0.78 0.69 0.66 0.96 1.38 0.36 0.85 0.63 0.66 Asphalt sheet waterproofing material 1.03 0.98 1.06 1.1 0.56 0.77 0.77 0.96 0.83 0.67 0.69 0.56 0.38 0.67 0.63 0.56 Acrylic film waterproofing material 1.04 0.64 1.02 1.04 0.56 0.61 0.5 0.43 0.69 0.56 0.36 0.83 0.65 0.68 0.82 0.48 Epoxy Flooring 1.23 1.06 1.33 1.11 0.36 0.83 0.77 0.54 0.71 0.36 0.59 0.72 0.71 2.23 2.32 1.53 MMA type anti-slip packaging material 1.15 1.26 1.33 1.36 0.28 0.69 0.89 0.76 0.66 0.96 0.75 1.03 0.71 0.88 0.75 0.61 hardner 1.23 1.13 1.12 1.21 0.56 0.83 0.64 0.54 0.77 0.62 0.58 0.59 0.77 0.62 0.58 1.36 change in adhesion Urethane waterproofing material no change no change no change no change peeling peeling peeling peeling peeling peeling peeling no change peeling peeling peeling peeling Asphalt sheet waterproofing material no change no change no change no change peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling Acrylic film waterproofing material no change no change peeling peeling no change peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling Epoxy Flooring no change no change no change no change peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling no change no change MMA type anti-slip packaging material no change no change no change no change peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling hardner no change peeling no change no change peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling peeling

Table 7 shows examples in which a coating composition according to the present invention, a pozzolan reactive material, and an irritant (fine oyster shell powder) were mixed and used as a waterproofing flooring coating material, and only one of the pozzolan reactive material and irritant was mixed with the coating composition according to the present invention It relates to the experimental results of comparative examples using acrylic primer, urethane oil-based primer, and epoxy primer, which are usually used as a coating material or as a primer coating material.

For the adhesion test, the KSF3211 roof coating film waterproofing adhesion test test was applied.

The change in adhesion of the old coating film in Examples and Comparative Examples of Table 7 relates to whether the appearance of the coating film has cracks or peeling compared to before construction after cold and hot repetition.

In the experiment of Table 7, the subsequent coating material was generally used alone, and the urethane waterproofing material, which has the lowest adhesion, was used alone, and the old coating film was produced using a specimen that had no abnormality in the first adhesion test.

As can be seen from Table 7, in the example in which the coating composition according to the present invention, the waterproof flooring mixed with the pozzolan diatomaceous earth, and the irritant was applied to the old coating film, the adhesion to all kinds of the old coating film was maintained without change, In the comparative example, it can be seen that part or all of the old coating film is peeled off depending on the material of the old coating film.

Table 8 below shows the results of testing the adhesion change of the old coating film while changing the weight ratio of the coating composition, which is the constituent material of Example 1, the pozzolan material, diatomaceous earth, and the fine oyster shell powder.

Substances used as pretreatment coating materials Preparation Example 1 Preparation Example 2 Preparation 3 Preparation 4 Production Example 5 Preparation 6 Preparation 7 Preparation 8 Preparation 9 Production Example 10 Composition of pretreatment coating material Water-soluble hybrid high-performance coating composition 100.0 90.0 80.0 110.0 120.0 130.0 100.0 100.0 85.0 110.0 pozzolanic material diatomaceous earth 15.0 10.0 10.0 15.0 20.0 15.0 5.0 15.0 15.0 15.0 Lung oyster shell fine powder 5.0 3.0 3.0 5.0 8.0 5.0 10.0 10.0 5.0 10.0 Sum 120.0 103.0 93.0 130.0 148.0 150.0 115.0 125.0 105.0 135.0 adherence Urethane waterproofing material 1.42 1.42 1.38 1.42 1.42 1.26 1.4 1.26 1.4 1.26 Asphalt sheet waterproofing material 1.03 1.03 0.98 1.03 1.03 1.06 1.1 1.06 1.1 1.06 Acrylic film waterproofing material 1.04 1.04 0.64 1.04 1.04 1.02 1.04 1.02 1.04 1.02 Epoxy Flooring 1.23 1.23 1.06 1.23 1.23 1.33 1.11 1.33 1.11 1.33 MMA type anti-slip packaging material 1.15 1.15 1.26 1.15 1.15 1.33 1.36 1.33 1.36 1.33 hardner 1.23 1.23 1.13 1.23 1.23 1.12 1.21 1.12 1.21 1.12 change in adhesion Urethane waterproofing material no change no change no change no change no change no change no change no change no change no change Asphalt sheet waterproofing material no change no change no change no change no change no change no change no change no change no change Acrylic film waterproofing material no change no change no change no change no change peeling peeling peeling peeling peeling Epoxy Flooring no change no change no change no change no change no change no change no change no change no change MMA type anti-slip packaging material no change no change no change no change no change no change no change no change no change no change hardner no change no change peeling no change no change no change no change no change no change no change

According to the present invention, if the coating composition, the pozzolan reactive material, and the irritant are mixed and then applied without removing the old coating film, construction can be performed without changing the adhesion of the old coating film. can

The waterproof flooring composition according to the present invention can be made to cross the old paint film at intervals of 50cm with a concrete cutter before application and cut to a depth of 3mm, so that the waterproofing flooring composition can be uniformly spread.

Alternatively, water-soluble silane and water may be mixed in a ratio of 1:9 and sprayed on the old coating film as a pretreatment agent. This is to increase the adhesion between the cement, stone or inorganic material and the organic coating agent of the old coating, and to activate the active material of the pozzolan material more quickly.

Water-soluble silanes include, for example, methyltrimethoxysilane, tetraethoxysilane aminopropyl trimethoxy silane, mercaptopropyltrimethoxysilane aminopropyl triethoxy silane N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, γ- , 3-glycy and doxypropyltrimethoxysilane.

Although the present invention has been described above with reference to the accompanying drawings, the scope of the present invention is determined by the following claims and should not be construed as being limited to the above-described embodiments and/or drawings. And it should be clearly understood that improvements, changes and modifications obvious to those skilled in the art of the invention described in the claims are also included in the scope of the present invention.

Claims (9)

A coating composition comprising a main agent and a curing agent, and a waterproofing flooring composition comprising a pozzolan reactive material,
The subject is, 40-50 parts by weight of an active hydrogen-containing resin; 20-40 parts by weight of ionized water; It contains 02 to 2 parts by weight of a catalyst and 10 to 30 parts by weight of a solvent,
The curing agent, 30 to 45 parts by weight of an oxirane ring-containing resin; 10-20 parts by weight of ionized water; 25-35 parts by weight of an extender pigment; 05-15 parts by weight of hydrophilic organic functional silane; It contains 10-20 parts by weight of a colorant and 1-6 parts by weight of a hydrophilic solvent,
The active hydrogen-containing resin is selected from the group consisting of polyamine resins and polyamide resins,
The catalyst has a molecular weight of 50 to 1000, and is an aliphatic or aromatic tertiary amine,
The solvent is one or a mixture of two selected from the group consisting of dimethyl carbonate and t-butyl acetate,
The oxirane ring-containing resin is one or a mixture of two selected from the group consisting of a diphenylolpropane A-type oxirane ring-containing resin and an oxirane ring-containing resin having two or more oxirane ring-containing groups in the molecule, The equivalent of oxirane ring is 340 to 900 g/eq,
The extender is selected from the group consisting of fly ash slag, silica fume, calcium carbonate and barium sulfate,
The hydrophilic organic functional group silane is aminopropyltrimethoxysilane,
The hydrophilic solvent is one or a mixture of two selected from the group consisting of N-methylpyrrolidone and dimethylformamide,
When mixing the curing agent and the main agent, the equivalent ratio is the number of equivalents containing an oxirane ring: the number of equivalents of active hydrogen amine = 1:07 to 1:11,
Waterproofing flooring composition.
The method according to claim 1,
The active hydrogen-containing resin has an amine equivalent of 400 to 1000 g / eq,
Waterproofing flooring composition.
The method according to claim 1,
The viscosity of the mixture of the curing agent and the main agent is 100 ~ 1500 cps at 25 ℃,
Waterproofing flooring composition.
The method according to claim 1,
The pozzolanic reactant is
selected from the group consisting of tuff, volcanic ash, silicate clay, diatomaceous earth, obsidian, fly ash, silica fume, and rice husk ash,
Waterproofing flooring composition.
The method according to claim 1,
further comprising a stimulant,
The stimulant is selected from the group consisting of NaOH, KOH and [Ca(OH) ₂ + CaSO _{4 ],}
Waterproofing flooring composition.
6. The method of claim 5,
The stimulant is fine oyster shell powder,
Waterproofing flooring composition.
6. The method of claim 5,
the coating composition is 90-100 parts by weight, the pozzolan reactant is 10-20 parts by weight, and the irritant is 3-8 parts by weight;
Waterproofing flooring composition.
In the method of constructing the waterproof flooring composition of any one of claims 1 to 7,
A first step of mixing the coating composition and the pozzolan reactant to form a coating;
A second step of cutting the composition film to a predetermined interval and depth;
Including a third step of applying the coating material to the old coating film,
A method of constructing a waterproofing flooring composition.
In the method of constructing the waterproof flooring composition of any one of claims 1 to 7,
A first step of mixing the coating composition and the pozzolan reactant to form a coating;
A second step of applying a pretreatment agent mixed with water-soluble silane and water in a weight ratio of 1:9 to the old coating film;
Including a third step of applying the coating material to the old coating film,
A method of constructing a waterproofing flooring composition.