KR102154951B1 - Environment-friendly surface protection composition with anti-neutralization, salt protection, heavy corrosion protection and flame retardation, and surface protection method using the same - Google Patents

Abstract

The present invention relates to an eco-friendly surface protection agent composition having a neutralization and salt prevention function, a heavy corrosion protection function, and a flame retardant function, and to a surface protection method using the same and, more specifically, to a surface protection method of a concrete structure comprising the steps of: cleaning up irregularities or laitance on a concrete surface; and forming a finish layer by applying a two-component solvent-free epoxy surface protection agent composition on the surface using a roller or a spray.

Description

Environmental-friendly surface protection composition with anti-neutralization, salt protection, heavy corrosion protection and flame retardation, and surface protection method using the same}

The present invention relates to a surface protection composition having an environmentally friendly neutralization salt damage prevention and anti-corrosion flame retardant function, and a surface protection method using the same, and more particularly, in the epoxy resin composition used as a floor finishing agent, there is no smell peculiar to epoxy, and heavy metals and VOCs Hazardous substances are not added, such as, it is excellent in preventing neutralization of concrete structures, and has excellent abrasion resistance, so it has excellent effect of extending the life of the structure, and has excellent chemical performance such as neutralization prevention, salt damage prevention, and heavy anticorrosive functions, and excellent flame retardancy and durability. Therefore, it is possible to see the effect of maintenance reduction through this, and because there is no smell of chemicals during work, it is possible to construct in a closed space or public place, so that the surface protection agent (coating agent) composition and surface protection method using the same will be.

Recently, the exterior space of residential buildings is a liquor tax provided as a resting space for residents, such as the creation of theme parks through landscaping, and the demand for parking lots is increasing due to economic development and the increase in the number of cars owned. In order to provide it, we have to design the basement floor and use the parking lot.

However, hardener-based, epoxy-based, urethane-based resin mortar-based, etc. are currently used for parking lot floor finishes, and in the case of ground treatment, unrooted concrete pouring and sheet waterproofing are being designed or deleted without specific standards.

In addition, when constructing a structure made of concrete, steel, etc. at present, it is common to perform waterproof lining construction, and a wet method in which an epoxy resin, acrylic resin, or urethane resin is used for waterproofing is generally used.

Therefore, recently, cases of defects due to floor lifts, cracks, leaks, first, driving noise, etc. in parking lots are increasing, and even when the floor finish is painted, damage to the human body due to dust damage caused by airless spraying, odors and pollutants in the air The problem is also a serious environmental problem.

Accordingly, there is an increasing need for a solvent-free type surface protection agent (coating agent) composition for odorless coating.

The conventional solvent-free type epoxy paint contains a certain amount of solvent and is a paint for forming a thick film during construction, and has the characteristics that it is possible to paint and obtain the desired quality only when the thickness is at least 1 mm. Conventionally, the solvent-free epoxy lining composition is difficult to install due to the spreadability and surface tension of the paint due to its thin thickness.In particular, it has been difficult to construct, such as roller painting, and it has been mainly used as a thick film coating, since it has to be at least 1mm to obtain the desired quality. .

In particular, in the conventional solvent-free epoxy lining composition, as the coating film became thinner, the problem of concealing the paint occurred.The lower the color-related mixing ratio was low, and the hiding rate was poor in the thin film, making it difficult to apply the desired color. As the spreadability becomes poor, there is also a problem in that it is difficult to paint with a uniform coating film when coating a solvent-free paint with a thin film due to the surface tension of the paint.

In addition, the conventional solvent-free epoxy lining composition is known to be a solvent-free type, but actually contains some toxic organic solvents (butylcellosolve (BC), methyl ethyl ketone (MEK), toluene, xylene, etc.).

In order to improve the above problems, Korean Patent Registration No. 10-1392636 proposes a solvent-free two-component epoxy resin composition. By using a diluent instead of the organic solvent, environmental problems are not only solved, but the solid content is 80% or more. It has been proposed a technology that can be used even when moisture is high by realizing high adhesion by using a moisture-resistant curing agent and an acid-modified amine capable of curing in water.

However, in addition to its eco-friendly properties, the surface protectant composition needs to provide anti-neutralization, salt damage, and anti-corrosion functions of the concrete structure, and at the same time, it is necessary to exhibit flame retardant functions, but the above technology does not propose a composition for imparting such functions. There was a limit that I could not do.

In addition, conventional solvent-free type surface protectors have problems caused by direct exposure of organic solvents, and as one of efforts to solve this problem, construction methods using water-soluble products are used.However, in these methods, organic solvents are used to control hydrophilic groups in water-soluble compositions. Since the solvent acts as a factor that inhibits the crosslinking property of the curing component, it is only used as a thin film type coating, and its use has been limited in the field of flooring that requires a high strength function.

<Related prior art literature>

Korean Patent Registration No. 10-0632089

Korean Patent Registration No. 10-0167858

Korean Patent Registration No. 10-0536471

Korean Patent Registration No. 100835842

The present invention was developed to solve the problems of the conventional solvent-free type surface protection agent (coating agent) as described above, and there is no smell peculiar to epoxy in the epoxy resin composition used as a floor finishing agent, and harmful substances such as organic solvents, heavy metals and VOCs It is excellent in preventing neutralization of concrete structures and has excellent abrasion resistance, so it has excellent effect to extend the life of the structure, and has excellent chemical performance such as neutralization prevention, salt damage prevention, and heavy anticorrosive functions, and excellent flame retardancy and durability. It is intended to provide a surface protection composition with safety and eco-friendliness and a surface protection method using the same as it can be constructed in a closed space or public place because there is no smell of chemicals during work while maintaining the effect of reducing maintenance.

In order to achieve the above object, one embodiment of the present invention

(a) 30 to 60 wt% of bisphenol A epoxy resin or bisphenol F epoxy resin having an epoxy equivalent of 160 to 340 g/eq;

(b) 15 to 40% by weight of a colored pigment selected from the group consisting of titanium dioxide, carbon black, sulfur iron oxide, iron oxide, phthalocyanine blue, phthalocyanine green, non-toxic iron oxide green, non-toxic iron oxide blue, and mixtures thereof;

(c) 1 to 5% by weight of an additive selected from the group consisting of an antifoaming agent, a dispersant, a leveling agent, a surface tension reducing agent, a surface fluidity modifier, an antibacterial agent, and a mixture thereof;

(d) 7 to 30% by weight of a filler selected from the group consisting of silicon dioxide (SiO2), barium sulfate (BaSO4), aluminum oxide (Al2O3), calcium carbonate (CaCO3), talc, and mixtures thereof;

(e) 10-20% by weight of a non-reactive diluent selected from the group consisting of dodecylphenol, benzyl alcohol, Styrenated Phenol, and mixtures thereof; and

It comprises an amine-based curing agent (B), and the mixing weight ratio of the main material (A) and the curing agent (B) is 1 to 5: 1, respectively, to provide a two-pack type solvent-free epoxy surface protector composition.

In the present invention, the curing agent (B) is

Polyamine, isophorone diamine (IPDA), MXDA (meta-xylene diamine), and bisphenol A epoxy resin with an epoxy equivalent of 160 to 340 g/eq were adducted and cooled, followed by vacuum deodorization under reduced pressure to remove the free amine obtained. 80 to 95% by weight of the resin mixture; 2 to 10% by weight of 2,4,6-tris(dimethylaminomethyl)phenol; And 2 to 10% by weight of a non-reactive diluent selected from the group consisting of benzyl alcohol, dodecyl phenol and Styrenated Phenol; a curing agent (B) i or,

15 to 40% by weight of polyoxypropylenediamine; 5-30% by weight of Mannich-Base curing agent; 17-30% by weight of IPDA (Isophorone diamine) mixture; 7-20% by weight of 2,4,6-tris(dimethylaminomethyl)phenol; And 15 to 30% by weight of a non-reactive diluent selected from the group consisting of benzyl alcohol, dodecyl phenol, and Styrenated Phenol (B) ii.

In addition, the composition in the present invention is characterized in that the thickness is 0.1 ~ 1.0mm when performing the coating.

In addition, the cooling is characterized in that it is carried out at 0 ~ 70 ℃ after the epoxy resin adduct reaction at 70 ℃ ~ 170 ℃.

In addition, the depressurization is characterized in that it is carried out at 40 Torr or less.

In addition, in order to achieve the above object, another embodiment of the present invention

Arranging irregularities or latans on the concrete surface; And

It provides a method for protecting a surface of a concrete structure including; forming a finishing layer by applying the two-component solvent-free epoxy surface protectant composition according to the present invention on the surface with a roller or spray.

The two-component, solvent-free epoxy surface protectant composition according to the present invention has the advantage that it is possible to finish the floor with a roller or spray so as to have a coating thickness of 0.1 to 1.0 mm without using an organic solvent.

When the floor is coated with the composition of the present invention, it shows excellent hiding properties, and it can be easily painted from 0.1mm to 1.0mm using rollers and spray painting, and smooth, gloss, and beautiful with excellent physical properties. It has the advantage of obtaining a high-quality surface such as, so that the lining quality and texture that cannot be obtained in the existing thin-film solvent-type epoxy coating can be obtained.

In addition, the surface tension of the coating agent (paint) is lower than that of the conventional solvent-free lining coating agent, so it can be uniformly coated without pushing the surface (material) of the paint due to roller workability, and it is eco-friendly because it does not contain volatile organic compounds of toxic substances. There is also.

In addition, it is excellent in preventing neutralization of concrete structures to be coated, and has excellent abrasion resistance, so it has excellent effect of extending the life of the structure, and has excellent chemical performance such as neutralization prevention, salt damage prevention, and heavy anticorrosive functions, and excellent flame retardancy and durability, so it is maintained through this. It has the advantage of excellent safety and eco-friendliness because it can see the effect of reducing maintenance and does not smell chemicals during work, so it can be constructed in a closed space or public place.

Hereinafter, the present invention will be described in more detail.

The two-component, solvent-free epoxy surface protectant composition according to the present invention is composed of a two-part type of a main agent (agent A) and a curing agent (agent B), and the subject is (a) bisphenol A epoxy resin having an epoxy equivalent of 160 to 340 g/eq or 30-60% by weight of bisphenol F epoxy resin; (b) 15 to 40% by weight of a colored pigment selected from the group consisting of titanium dioxide, carbon black, sulfur iron oxide, iron oxide, phthalocyanine blue, phthalocyanine green, non-toxic iron oxide green, non-toxic iron oxide blue, and mixtures thereof; (c) 1 to 5% by weight of an additive selected from the group consisting of an antifoaming agent, a dispersant, a leveling agent, a surface tension reducing agent, a surface fluidity modifier, an antibacterial agent, and a mixture thereof; (d) 7 to 30% by weight of a filler selected from the group consisting of silicon dioxide (SiO2), barium sulfate (BaSO4), aluminum oxide (Al2O3), calcium carbonate (CaCO3), talc, and mixtures thereof; (e) 10 to 20% by weight of a non-reactive diluent selected from the group consisting of dodecylphenol, benzyl alcohol, Styrenated Phenol, and mixtures thereof.

Hereinafter, each component material constituting the subject component will be described in detail.

[Topic (A)]

(a) epoxy resin

The subject (A) of the present invention may contain 30 to 60% by weight of an epoxy resin. The epoxy resin may have an epoxy equivalent of 160 to 340 g/eq, and the epoxy resin is specifically preferably a bisphenol A epoxy resin or a bisphenol F epoxy resin. Preferably, as in the embodiment of the present invention, it may be included in 52.50% by weight, but is not limited thereto.

(b) coloring pigment

The subject (A) of the present invention may contain 15 to 40% by weight of a colored pigment. The colored pigment may be titanium dioxide, carbon black, sulfur iron oxide, iron oxide, phthalocyanine blue, phthalocyanine green, non-toxic iron oxide green, non-toxic iron oxide blue, or a mixture thereof, preferably containing 27.50% by weight, but is limited thereto. It does not become.

(c) additive

Subject (A) of the present invention may include an additive selected from the group consisting of an antifoaming agent, a dispersing agent, a leveling agent, a surface tension reducing agent, a surface fluidity control agent, an antibacterial agent, or a mixture thereof, and the additive comprises 1 to 5% by weight. Can be. Preferably, it may contain 1.56% by weight as in the embodiment of the present invention, but is not limited thereto.

In particular, the flame retardant may be any one of antimony molybdate, aluminum hydroxide, molybdenum oxide, and magnesium hydroxide, or a mixture of two or more. In particular, aluminum hydroxide (Al(OH) ₃ ) is changed to activated alumina when it reaches 500℃ or higher due to the application of heat, so it has adsorption performance, so it adsorbs harmful substances such as dioxin and hydrogen chloride gas (HCl) generated during combustion and decomposes by heat. It has an endothermic reaction that has a cooling effect, and is non-flammable, so that it has excellent water and acid resistance, and it is expected to improve the flame retardant effect by using a combination of flame retardants.

(d) filler

Subject A of the present invention may comprise a filler. The filler has a particle diameter of 2 μm or less, and may be a group consisting of silicon dioxide (SiO2), barium sulfate (BaSO4), aluminum oxide (Al2O3), calcium carbonate (CaCO3), talc, or a mixture thereof.

(e) diluent

The subject (A) of the present invention may contain 10 to 20% by weight of a non-reactive diluent selected from the group consisting of dodecylphenol, benzyl alcohol, TXIB (Eastman TXIB™), Styrenated Phenol, or mixtures thereof. It may contain 10.94% by weight as in the embodiment of the present invention, but is not limited thereto.

(f) other

In the present invention, the subject (A) may further include a functional filler.

As the functional filler, a mixture of silica powder and expandable graphite may be used.

As the silica powder, one or a mixture of two or more selected from colloidal silica, fumed silica, and micronized silica may be used.

The functional filler serves to increase the physical effect by further enhancing the binding effect of the surface protectant (coating agent) composition. In the present invention, the mixing ratio of the silica powder and the expandable graphite is preferably mixed in a weight ratio of 100:50 to 200.

In addition, when using the functional filler, it is possible to use the powder directly, but by treating the surface and coating it with an organosilane, it is possible to increase the durability due to increased binding effect.

That is, the silica powder alone or a mixture of expandable graphite powder may be treated by dispersing a colloidal solution in which a solvent is dispersed in an organic silane, followed by stirring for about 1 to 10 hours. Specifically, about 0.1 to 50 parts by weight of an organic silane is added to the solution based on 100 parts by weight of a silica powder alone or a mixture solution of expandable graphite powder to form an organic group on the surface of the powder particles in the solution and pass through the reactor to dehydration and condensation reaction. Through the organic group surface-treated powder is formed. In this case, the solution is that silica powder or expandable graphite powder is dispersed in a colloidal state in a solvent such as water or alcohol, and it is preferable to contact the organic silane in a colloidal solution state.

Specific examples of the organosilane include dimethyldimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, and tetraethoxysilane. At this time, treating the surface of the powder with organic silane is formed by stirring at room temperature for about 1 to 10 hours to form an inorganic substance having an organic group and passing it through a reactor. In this case, the reactor is a heating device, and the temperature is raised to 100 to 300°C to dehydrate and condensate the inorganic material having a solvent and an organic group formed thereon for 1 to 10 hours to prepare powdery inorganic particles having a surface treatment.

The silica powder and the expandable graphite powder prepared as described above have excellent binding effects because silane is formed on the surface thereof, and thus durability may be further improved.

In the present invention, the functional filler is preferably included in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the main (A).

[Hardener (B)]

The curing agent of the present invention may be selected and used among curing agents i or ii. It will be described in more detail as follows.

(1) Hardener i

A cured resin mixture from which free amine is removed by adducting reaction with polyamine, isophorone diamine (IPDA), meta-xylene diamine (MXDA), and bisphenol epoxy resin having an epoxy equivalent of 160 to 340 g/eq, cooling, and vacuum deodorization under reduced pressure. 80-95% by weight; 2 to 10% by weight of 2,4,6-tris(dimethylaminomethyl)phenol; And 3 to 10% by weight of at least one non-reactive diluent selected from benzyl alcohol, dodecyl phenol, TXIB (Eastman TXIB™), and Styrenated Phenol may be used.

In the present invention, the cooling may be carried out at 70° C. to 170° C. after the epoxy resin adduct reaction, and then under 70° C. or lower conditions (specific example, 0 to 70° C.), and the depressurization is 40 Torr or less (for a specific example, 0 to 40° C. Torr).

(2) hardener ii

15 to 40% by weight of polyoxypropylenediamine; 5-30% by weight of Mannich-Base curing agent; 17-30% by weight of IPDA (Isophorone diamine) mixture; 7-20% by weight of 2,4,6-tris(dimethylaminomethyl)phenol; And benzyl alcohol, dodecyl phenol (dodecyl phenol), TXIB (Eastman TXIB™), Styrenated Phenol can be used a curing agent containing 15 to 30% by weight of at least one non-reactive diluent selected from.

The two-component, solvent-free epoxy surface protectant composition of the present invention is made by mixing 1 to 5 weight ratio of the main component and 1 weight ratio of the curing agent in the field, and compared to the conventional solvent-free type surface protectant composition, it has water resistance, chemical resistance, and especially It has excellent anti-neutralization, salt damage, and heavy anti-corrosion functions for concrete structures, and rapid process treatment is possible using a water-based primer composition.

When using the two-component, solvent-free type epoxy surface protectant composition as described above, when it is applied on site, it is applied to the concrete surface with a thickness of 0.1-1.0mm using a roller or spray to form a finishing layer, and the coated surface Silver has excellent physical properties such as water resistance and durability.

Hereinafter, a method of protecting a concrete surface using a two-component solvent-free epoxy surface protector composition according to the present invention will be described in more detail.

The concrete surface protection construction method according to the present invention comprises the steps of removing and arranging the irregularities or latans of the concrete surface, and applying the two-component solvent-free epoxy surface protectant composition of the present invention described above on the surface with a roller or spray to a finishing layer. It characterized in that it comprises the step of forming.

In addition, the present invention may further include the step of spraying and attaching silica sand or metal chips on the finishing layer in order to impart non-slip properties. At this time, the silica sand and the metal chip are not particularly limited.

As described above, the completely solvent-free water-based epoxy resin mortar composition according to the present invention has excellent mechanical properties and can meet the demands of industrial pollution-free and work cleanliness, and is easy to handle, safe in the working environment, and risk of fire. It is possible to maximize environmentally friendly characteristics such as no contamination and no pollution to the working environment.

Hereinafter, the present invention will be described in more detail by examples, but the scope of the present invention is not limited by the examples.

[Example]

In the present invention, by preparing a subject and a curing agent having the configuration shown in Tables 1 to 3 below, a coating agent (surface protection agent) composition for finishing the floor was prepared.

Subject (A) Kinds ingredient Content (% by weight) Epoxy resin Bisphenol-A epoxy resin (epoxy equivalent 187~205 g/eq 52.50 Coloring pigment TiO2, Carbon Black 27.50 additive Silicone-free polymer
(Butadiene copolymer solution) 1.09 Fluorine modified polysiloxane solution 0.31 Polyether modified polymethylalkyl siloxane solution 0.16 Filler Calcium Carbonate 7.50 Non-reactive diluent Dodecyl phenol 10.94

Hardener (B) i ingredient Content (% by weight) Polyamine, isophorone diamine (IPDA), MXDA (meta-xylene diamine), and bisphenol A epoxy resin with an epoxy equivalent of 160 to 340 g/eq were adducted and cooled, followed by vacuum deodorization under reduced pressure to remove the free amine obtained. Resin mixture 85.00 2,4,6-tris(dimethylaminomethyl)phenol 10.00 Non-reactive diluent 5.00

Hardener (B) ii ingredient Content (% by weight) Polyoxyethylenediamine 25.00 Mannich-Base curing agent 15.70 IPDA (Isophorone diamine) mixture 24.00 2,4,6-tris(dimethylaminomethyl)phenol 13.50 Non-reactive diluent (Dodecyl phenol) 10.00 Non-reactive diluent (Benzyl Alcohol) 11.80

In this regard, the base material and the curing agent were mixed in the following ratios, and coating was performed on the floor.

Main hardener type and mixing ratio Example 1 A: B i = 2: 1 Example 2 A: B i = 2.5: 1 Example 3 A: B ii = 3: 1 Example 4 A: B ii = 4: 1

Performance evaluation

As a result of coating the floor with a roller using a surface protectant (coating agent) composition having the composition of Examples 1 to 4, it was confirmed that the thickness of the coating film was 1 mm or less, and it was confirmed that it has excellent physical properties and surface area quality. .

In addition, it was confirmed that there was no odor generated from organic solvents or the like during coating, and no odor peculiar to epoxy was generated.

In addition, the two-component solvent-free type epoxy surface coating composition according to the present invention is excellent in preventing neutralization of concrete structures when used as a floor finishing agent, and has excellent abrasion resistance so that it has an excellent effect of extending the life of the structure, while preventing neutralization, preventing salt damage, and anti-corrosion. It has excellent chemical performance, such as functions, and excellent flame retardancy and durability, so it is expected that maintenance reduction effects can be seen.

Claims (6)

Arranging irregularities or latans on the concrete surface; And
As a surface protection method of a concrete structure comprising; forming a finish layer by applying a two-component solvent-free epoxy surface protectant composition on the surface with a roller or spray,
The two-component solvent-free epoxy surface protector composition
(a) 30 to 60 wt% of bisphenol A epoxy resin or bisphenol F epoxy resin having an epoxy equivalent of 160 to 340 g/eq;
(b) 15 to 40% by weight of a colored pigment selected from the group consisting of titanium dioxide, carbon black, sulfur iron oxide, iron oxide, phthalocyanine blue, phthalocyanine green, non-toxic iron oxide green, non-toxic iron oxide blue, and mixtures thereof;
(c) 1 to 5% by weight of an additive selected from the group consisting of an antifoaming agent, a dispersant, a leveling agent, a surface tension reducing agent, a surface fluidity modifier, an antibacterial agent, and a mixture thereof;
(d) 7 to 30% by weight of a filler selected from the group consisting of silicon dioxide (SiO2), barium sulfate (BaSO4), aluminum oxide (Al2O3), calcium carbonate (CaCO3), talc, and mixtures thereof;
(e) 10-20% by weight of a non-reactive diluent selected from the group consisting of dodecylphenol, benzyl alcohol, Styrenated Phenol, and mixtures thereof; and
It comprises an amine-based curing agent (B), and the mixing weight ratio of the main material (A) and the curing agent (B) is 1 to 5: 1, respectively,
The curing agent (B) is obtained by adducting polyamine, isophorone diamine (IPDA), meta-xylene diamine (MXDA), and bisphenol A epoxy resin having an epoxy equivalent of 160 to 340 g/eq, cooling, and vacuum deodorizing under reduced pressure. 80 to 95% by weight of the cured resin mixture from which the free amine is removed; 2 to 10% by weight of 2,4,6-tris(dimethylaminomethyl)phenol; And 2 to 10% by weight of a non-reactive diluent selected from the group consisting of benzyl alcohol, dodecyl phenol and Styrenated Phenol; a curing agent (B) i or,
15 to 40% by weight of polyoxypropylenediamine; 5-30% by weight of Mannich-Base curing agent; 17-30% by weight of IPDA (Isophorone diamine) mixture; 7-20% by weight of 2,4,6-tris(dimethylaminomethyl)phenol; And a curing agent (B) ii comprising 15 to 30% by weight of a non-reactive diluent selected from the group consisting of benzyl alcohol, dodecyl phenol, and Styrenated Phenol,
The subject (A) is characterized in that it further comprises a functional filler made of a mixture of silica powder and expandable graphite,
The functional filler is characterized in that the mixing ratio of the silica powder and the expandable graphite is 100: 50 ~ 200 weight ratio, and the surface is coated with an organosilane,
An organic group is formed on the surface of the powder particles in the solution by adding 0.1 to 50 parts by weight of an organic silane based on 100 parts by weight of the mixture solution of the silica powder and the expandable graphite powder, and the surface is treated with the organic group through dehydration and condensation reaction. , The solution is characterized in that using silica powder or expandable graphite powder dispersed in a colloidal state in water or alcohol,
The organosilane is characterized in that it is selected from dimethyldimethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, and tetraethoxysilane,
The functional filler made of a mixture of the silica powder and the expandable graphite is contained in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the main body (A).
Surface protection method of concrete structures. delete delete delete delete delete