KR101126680B1 - Coating Material For Concrete Structure Comprising Hybrid Polymer And Construction Method Using The Same - Google Patents

Abstract

The present invention relates to a concrete structure covering material comprising a hybrid polymer and a construction method thereof, and more particularly, to a concrete structure coating material comprising a functional polymer obtained by hybridizing a vinyl ester prepolymer and an amide amine prepolymer, and a construction method thereof. According to the present invention, not only is easy in durability, cold resistance, crack tracking, chemical resistance, ozone resistance and wet state, but also has good compressive strength and flexural strength, and prevents environmental pollution, human harmfulness and fire hazard by evaporation of solvent during construction. Can provide waterproof and anticorrosive coating materials.

Concrete structures, hybrid polymers, waterproofing, anticorrosion, repair, reinforcement cladding.

Description

Coating Material For Concrete Structure Comprising Hybrid Polymer And Construction Method Using The Same}

The present invention relates to a concrete structure covering material comprising a hybrid polymer and a construction method thereof, and more particularly, to a concrete structure coating material comprising a functional polymer obtained by hybridizing a vinyl ester prepolymer and an amide amine prepolymer, and a construction method thereof.

Water pollution of domestic water supply due to various environmental factors is getting serious year by year, especially the inflow of new harmful substances has reached the limit in the treatment capacity by the existing water treatment plant method. Appropriate waterproofing and anticorrosive materials should be appropriately applied to each treatment tank to maintain durability and preserve water safety from various external deterioration factors.

In the water treatment structure, various chemical and physical environments of each treatment tank operate inside the structure for a long time. In such a use environment, concrete structures are deteriorated due to long-term effects such as cracking, surface peeling, chemical erosion, and so on.

Various waterproof and anticorrosive materials and methods are applied to maintain durability of water treatment facilities and preserve water quality from the above-mentioned deterioration factors. At present, the water treatment facilities operating in Korea used to disinfect water with bacteria and microorganisms by using chlorine water purification method.However, trace organic pollutants, ammonia nitrogen, taste, odor, trihalo methane (THM), anionic surfactants, and algae are difficult to remove completely, and recently, many methods of purifying water using ozone treatment have been adopted.

In the ozone treatment facility, which is a water treatment system using the strong oxidizing power of ozone among the advanced water treatment facilities, conventionally, various types of siliceous powder coating waterproofing material, inorganic elastic composite waterproofing material, ceramic metal anticorrosive material, epoxy resin waterproofing and anticorrosive material, etc. We applied waterproofing and corrosion prevention material.

Ozone has stronger oxidizing power than chlorine, so it can be used for disinfection. It is toxic to biochemical reactive enzymes in organic cell membranes caused by active oxygen radicals and peroxides, causes abnormalities on chromosomes, and destroys tissues. do.

Closed ozone treatment tanks, one of the major structural facilities for ozone-based advanced water treatment systems, sterilize water with ozone (O ₃ ), which has strong oxidizing power.

Due to the strong oxidizing power of ozone, water treatment facilities such as water purification facilities (epoxy watches, ceramic metals, etc.), for example, water purification methods using chlorine, hybrid waterproof methods, and the like (patent 10-0708460), etc. The study on the evaluation of waterproofing and anticorrosive properties in ozone environment has a concern that the waterproofing layer is oxidized, resulting in deterioration of long-term waterproofing and durability.

Structures exposed to the ozone environment, that is, water treatment structures using ozone, should consider the sterilization treatment of water with strong oxidizing power and ensure ozone resistance against chemical environmental conditions generated during use.

Therefore, it is urgent to develop an ozone-proof coating material and a construction method of the concrete structure to overcome the problems of the prior art.

In order to solve the problems of the prior art as described above, the present invention provides a coating material containing a specific compound, which can be applied to concrete structures exposed to chemical and physical external environmental changes (chemical erosion, vibration, etc.) under an ozone environment. It aims to do it.

Another object of the present invention is to provide a construction method using the coating material.

The above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention

A concrete structure coating material comprising (a) an amide amine prepolymer having a hydrophilic functional group, (b) a vinyl ester prepolymer having a hydrophobic functional group, and (c) calcium aluminum silicate.

In addition,

(a) removing foreign matter from the concrete surface layer;

(b) depositing a filler on the upper surface defect of the concrete surface layer;

(c) laminating a filler and a ground adjuster on the filler;

(d) stacking the concrete structure covering material on the base adjuster;

(e) stacking a reinforcing material on the concrete structure covering material layer; And

(f) provides a construction method comprising the step of laminating the concrete structure covering material on the reinforcing material upper layer.

The cladding according to the present invention has strong adhesion to concrete, retains durability and cold resistance, as well as followability to crack stresses occurring in the concrete itself, and is excellent in chlorine resistance, acid resistance, alkali resistance, and ozone resistance. . In addition, it can be easily used even in the wet state, has good compressive strength and flexural strength, and can prevent environmental pollution, human hazards and fire hazards due to solvent evaporation during construction, and is suitable for various waterproofing, corrosion prevention, repair and reinforcement. It can be usefully used as a coating material.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone anticorrosive coating material in which a functional ceramic obtained by hybridizing an amide amine prepolymer and a vinyl ester prepolymer is mixed with a mineral ceramic fine powder and a coloring pigment for coloring.

That is, the present invention relates to a concrete structure covering material comprising (a) an amide amine prepolymer having a hydrophilic functional group, (b) a vinyl ester prepolymer having a hydrophobic functional group, and (c) calcium aluminum silicate as a mineral ceramic fine powder.

When the prepolymer having a hydrophilic functional group and the prepolymer having a hydrophobic functional group are mixed, an interpenetrating structure IPN (Inter Penentrating Network) is formed. When calcium aluminum silicate is added as a main component, the organic polymer molecular structure of the IPN structure is surrounded by the three-dimensional network structure formation of the hybrid prepolymer by chemical reaction of inorganic metal salt, thereby forming a film. Will have That is, it has characteristics that can be coped with from external physical shocks and cracks. In addition, due to cold resistance, strong cohesion and crosslinking of the three-dimensional fine network structure, it is possible to secure the waterproofing and corrosion resistance performance from various physical and chemical degradation factors of the water treatment structure.

In particular, vinyl ester prepolymers formed by polymerization of vinyl groups and ester groups generally have ozone resistance as a stable chemical structure against oxidation.

The vinyl ester prepolymer, namely epoxy ester and acrylic ester, is a chemical structure having a strong molecular bonding strength such as ozone, and is made of a material that is resistant to ozone-resistant oxidation, and has a three-dimensional network structure by IPN reaction and inorganic metal chemical reaction. It has the characteristics that can be used as ozone coating of concrete structure.

In particular, the ozone resistance is improved in the acrylic ester group of the vinyl ester prepolymer, and the radical monomer is reacted with a reactive diluent of a styrene monomer and an acrylic monomer as a mono monomer.

In addition, the vinyl ester is composed of a vinyl group of acrylate or methacrylate, which is a major part of the active group, for radical reaction, and an activated monomer of a mono monomer such as styrene monomer can increase the radical reaction activity, but the vinyl group itself It has a high degree of activation and can be cured even without an active monomer.

The (a) prepolymer having a hydrophilic functional group is a compound represented by the following formula (1) or (2).

[Formula 1]

From here,

D is a dimer acid having 12 to 18 carbon atoms;

R ₁ is an alkyl group having 1 to 4 carbon atoms;

n is a positive integer from 10 to 100.

Specific examples of the compound corresponding to Chemical Formula 1 include polyamide, polyamideamine, polyamine, polyamideamidoamine, and the like.

[Formula 2]

From here,

D is a dimer acid having 12 to 18 carbon atoms;

m is a positive integer from 10 to 100.

Specific examples of the compound corresponding to Chemical Formula 2 include polyamidazole, 2-ethylimidazole, 4-methylimidazole, and the like.

The (b) prepolymer having a hydrophobic functional group is a compound represented by the following formula (3).

(3)

From here,

Ar is an aromatic ring having 6 to 24 carbon atoms, unsubstituted or substituted with a halogen element;

Each R ₁ is independently selected from the group consisting of H, methyl, ethyl, propyl and butyl

Each R ₂ is independently selected from O, OH and an alkyl group having 1 to 4 carbon atoms;

q is a positive real number from 0 to 4;

r is a positive integer from 1 to 10.

Specific examples of the compound corresponding to Chemical Formula 3 include polyvinyl epoxy ester, polyvinyl ester, polyvinyl bromide ester, polyvinyl chloride ester, and the like.

The compounds represented by Chemical Formula 3 may be one of the following structures.

(a) Epoxy type vinyl ester

(b) Novolac type Vinyl Ester

(c) Brominated Epoxy type vinyl ester

By applying the vinyl ester to the coating material according to the present invention, the effect that can be cured without any active monomer can be obtained.

In addition, the concrete structure coating material of the present invention is characterized in that it comprises 25 to 40% by weight of the prepolymer having the hydrophilic functional group, 25 to 40% by weight of the prepolymer having the hydrophobic functional group, and 20 to 50% by weight of the calcium aluminum silicate. .

The (a) prepolymer having a hydrophilic functional group is included in the concrete structure coating material 25 to 40% by weight, preferably 25 to 35% by weight. If the content is less than 25% by weight, there is a problem of curing speed, and if the content exceeds 40% by weight, there is a problem of pot life.

The (b) prepolymer having a hydrophobic functional group includes 25 to 40% by weight, preferably 30 to 40% by weight of the concrete structure covering material. If the content is less than 25% by weight, there is a problem of ozone resistance, and if the content is more than 40% by weight, there is a problem of curing physical properties.

The (c) calcium aluminum silicate is 20 to 50% by weight, preferably 30 to 40% by weight of the concrete structure covering. If the content is less than 20% by weight, there is a problem of a network structure, and if the content is more than 50% by weight, there is a problem of hardening properties of the coating material coating film.

The average particle diameter of the calcium aluminum silicate particles is 80 to 325 mesh, the particle shape is characterized in that the spherical shape.

The coating | covering material of this invention can mix and use mineral ceramic fine powder, a pigment, etc. Calcium aluminum silicate (CaO? Al ₂ O ₃ ? SiO ₂ ? XH ₂ O), calcium silicate, calcium alumina, etc. may be used as the fine ceramic ceramic powder, and titanium oxide, carbon black, cyanine blue, etc. may be used as the pigment. However, the present invention is not limited to the above description.

The present invention relates to a construction method using the concrete structure covering.

Construction method according to the invention

(a) removing foreign matter from the concrete surface layer;

(b) depositing a filler on the upper surface defect of the concrete surface layer;

(c) stacking a base adjustment material on the filler; And

(d) stacking the concrete structure covering material on the base adjuster; Characterized in that it comprises a.

In addition, the construction method according to the present invention

(a) removing foreign matter from the concrete surface layer;

(b) depositing a filler on the upper surface defect of the concrete surface layer;

(c) stacking a base adjustment material on the filler;

(d) stacking the concrete structure covering material on the base adjuster;

(e) stacking a reinforcing material on the concrete structure covering material layer; And

(F) further comprising the step of laminating the concrete structure covering material on the reinforcing material upper layer.

Concrete structure covering of the three-dimensional network structure according to the present invention can also be used for repair and reinforcement.

3 and 4 show laminated cross-sectional views when the concrete structure covering of the present invention is used for repair and reinforcement.

As can be seen in Figure 3, even when using the concrete structure covering material of the present invention for repair, on the concrete surface layer 31, the filler layer 32, the ground adjuster layer 33, And the concrete structure coating material layer 34 of the three-dimensional network structure can be laminated.

In addition, as shown in FIG. 4 below, even when the concrete structure covering material of the present invention is used for reinforcement, the filler layer 42 and the ground adjuster layer 43 are formed on the concrete surface layer 41 as in FIG. 2. ), The three-dimensional network structure covering material layer 44, the reinforcement layer 45, and the three-dimensional network structure covering material layer 46 may be laminated.

The present invention will be described in more detail with reference to the following examples. However, these embodiments are merely exemplary and do not limit the technical scope of the present invention.

[Example]

Example  One

In a 1,000 ml flask reactor equipped with a stirrer, a thermostat and a reflux condenser, 50 parts by weight of dibasic carbonyl acid dimer acid and 50 parts by weight of triethylenetetraamine were reacted to prepare a prepolymer having a hydrophilic functional group.

Further, 20 parts by weight of het acid, 20 parts by weight of propylene glycol and 60 parts by weight of glycidyl hydroxy acrylate were reacted to prepare a prepolymer having a hydrophobic functional group.

The prepolymers were extracted from the reactor and cooled to room temperature, and then, 40 parts by weight of the prepolymer having a hydrophilic functional group and 40 parts by weight of the prepolymer having a hydrophobic functional group were mixed with 20 parts by weight of calcium aluminum silicate, followed by high speed dispersion of the concrete according to the present invention. Structure coatings were prepared.

Example  2

In preparing a prepolymer having a hydrophilic functional group, the concrete according to the present invention was prepared by the same method as in Example 1, except that 30 parts by weight of a dibasic carbonyl acid dimer acid and 70 parts by weight of triethylenetetraamine were reacted. Structure coatings were prepared.

Example  3

In preparing a prepolymer having a hydrophobic functional group, the same procedure as in Example 1 was carried out except that 40 parts by weight of heptic acid and 40 parts by weight of propylene glycol were reacted with 20 parts by weight of glycidyl hydroxyacrylate. A concrete structure covering was prepared according to the invention.

Example  4

A concrete structure coating material according to the present invention was prepared in the same manner as in Example 1, except that the weight ratio of the prepolymer having a hydrophilic functional group, the prepolymer having a hydrophobic functional group, and the calcium aluminum silicate was 35:35:30. It was.

Example  5

A concrete structure covering material according to the present invention was prepared in the same manner as in Example 1, except that the weight ratio of the prepolymer having a hydrophilic functional group, the prepolymer having a hydrophobic functional group, and calcium aluminum silicate was 30:30:40. It was.

Example  6

A concrete structure coating material according to the present invention was prepared in the same manner as in Example 1, except that the weight ratio of the prepolymer having a hydrophilic functional group, the prepolymer having a hydrophobic functional group, and calcium aluminum silicate was 25:25:50. It was.

Test evaluation

Each of the concrete structure covering materials including the hybrid polymer prepared according to the above example was evaluated for each item according to the following test method, and the results are shown in Table 1 below.

Adhesion strength-The concrete structure coating material prepared according to Examples 1 to 6 was treated to have a thickness of 1 mm in each mortar specimen to form a film, and dried at room temperature for 7 days, and then measured at room temperature.

* Change in weight-The specimen treated with the concrete structure covering material prepared according to Examples 1 to 6 was chamber size 90 cm x 70 cm x 120 cm and ozone injection concentration 5.0 ± 0.5ppm water vapor temperature 30 ± 5 ℃ After 200 hours of deterioration tester, weight change is performed.

* Appearance Test-Appearance test is to use a steel plate of 150mm x 70mm x 1mm in size. The steel plate is treated with a predetermined surface treatment and painted by brush painting or hand spray in accordance with 1211 of KS M 5000, and the term of temperature 20 ± 1 ° C and humidity 75 ± 5% is allowed to stand in a humidifier for 7 days. After visual observation of the surface change of the base surface of the coating film, the test specimen is deposited on an ozone tester and allowed to stand for 200 hours at a dissolved ozone concentration of 5.0 ± 0.5 ppm. After the test, visually observe whether the surface of the ozone-treated specimen is free of brush marks, cracking, and discoloration.

[Comparative Example]

Comparative example  One

After treating the water-based epoxy of KSF-4921 concrete epoxy resin waterproofing and anticorrosive coating material used in water treatment facilities without treating the coating material according to the present invention, the adhesion strength, weight change after ozone treatment, and appearance test results Observed. The results are shown in Table 1 below.

Comparative example  2

After treating the solvent-free epoxy of the KSF-4921 epoxy resin-based waterproofing and anticorrosive coating material for concrete, which is used in a water treatment facility without treating the coating material according to the present invention, the change in adhesion strength, weight change after ozone treatment, and appearance change Observed. The results are shown in Table 1 below.

As shown in Table 1, the concrete structure (Examples 1 to 6) including the coating material according to the present invention, unlike the case of the comparative example, the adhesion strength of the concrete surface and the coating material is large, there is almost no swelling against water vapor It can be seen. Therefore, the concrete structure including the covering according to the present invention can prevent the breaking phenomenon or the lifting phenomenon even if the expansion or contraction phenomenon from the base concrete occurs.

Although the invention has been described in detail above with reference to the described embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the invention, and such modifications and variations are within the scope of the appended claims. It is also natural.

1 is a cross-sectional view of a concrete structure manufactured by a construction method according to an embodiment of the present invention.

2 is a cross-sectional view of a concrete structure manufactured by a construction method according to another embodiment of the present invention.

Figure 3 is a laminated cross-sectional view when using the concrete structure covering according to the present invention for repair.

4 is a laminated cross-sectional view when using the concrete structure covering according to the present invention for reinforcement.

Brief description of the main symbols in the drawings

11, 21, 31, 41: concrete surface layer

12, 22, 32, 42: filler layer

13, 23, 33, 43: background adjustment layer

14, 24, 26, 34, 44, 46: 3D network structure cladding layer

25, 45: reinforcement layer

Claims (11)

(a) a prepolymer having a hydrophilic functional group, (b) a vinyl ester prepolymer having a hydrophobic functional group, and (c) a fine ceramic ceramic powder comprising calcium aluminum silicate, The prepolymer having a hydrophilic functional group is a prepolymer having the following Formula 1 or Formula 2, Concrete structure covering material, characterized in that the vinyl ester prepolymer having a hydrophobic functional group is a prepolymer having the formula (3). [Formula 1]

From here, D is a dimer acid having 12 to 18 carbon atoms; R ₁ is an alkyl group having 1 to 4 carbon atoms; n is a positive integer from 10 to 100. [Formula 2]

From here, D is a dimer acid having 12 to 18 carbon atoms; m is a positive integer from 10 to 100. (3)

From here, Ar is an aromatic ring having 6 to 24 carbon atoms, unsubstituted or substituted with a halogen element; Each R ₁ is independently selected from the group consisting of H, methyl, ethyl, propyl and butyl Each R ₂ is independently selected from O, OH and an alkyl group having 1 to 4 carbon atoms; q is a positive real number from 0 to 4; r is a positive integer from 1 to 10. delete delete delete The method of claim 1, The concrete structure covering may include (a) 25 to 40% by weight of a prepolymer having a hydrophilic functional group, (b) 25 to 40% by weight of a prepolymer having a hydrophobic functional group, and (c) 20 to 50% by weight of calcium aluminum silicate. Concrete structure covering material. The method of claim 1, The concrete structure covering material is a concrete structure covering material, characterized in that the three-dimensional network structure. The method of claim 1, Concrete structure coating material, characterized in that the average particle diameter of the (c) calcium aluminum silicate particles is 80 to 325 mesh. The method of claim 1, The concrete structure coating material, characterized in that the (c) calcium aluminum silicate particles are spherical in shape. The method of claim 1, The concrete structure covering material further comprises a coloring pigment for mineral ceramic-based fine powder or other coloring. (a) removing foreign matter from the concrete surface layer; (b) depositing a filler on the upper surface defect of the concrete surface layer; (c) stacking a base adjustment material on the filler; And (d) laminating the concrete structure covering of any one of claims 1 or 5 to 9 above the ground adjuster; Construction method comprising a. (a) removing foreign matter from the concrete surface layer; (b) depositing a filler on the upper surface defect of the concrete surface layer; (c) stacking a base adjustment material on the filler; And (d) laminating the concrete structure covering of any one of claims 1 or 5 to 9 above the ground adjuster; (e) stacking a reinforcing material on the concrete structure covering material layer; And (f) laminating the concrete structure covering material according to any one of claims 1 to 5 on the reinforcing material upper layer.

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