KR102260367B1 - Silica based waterproof agent using terpolymer redispersible powder and surface protection agent using silane and method for waterproof and anticorrosion using the same - Google Patents

Abstract

The present invention relates to: a siliceous coating waterproofing agent using a terpolymer re-emulsification type powder resin, which is applied to a common duct of various concrete structures such as a water purification plant, a water reservoir, a sewage/wastewater treatment plant, a pressurization plant, a pump plant, and a storage tank, a machine room, a manhole, a pipe space, a sewage box, a bridge, bridge pier, a tunnel, a median, a underground structure under water pressure, and internal and external waterproofing and replacement of cement plaster; an eco-friendly modified silicone surface protective agent; and a terpolymer siliceous composite modified silicone waterproof/anti-corrosion method using the same. A terpolymer siliceous composite modified silicone composition including a siliceous coating waterproofing agent using terpolymer re-emulsification type powder resin and an eco-friendly modified silicone surface protective agent comprises: 1-10 parts by weight of a defect filter for filling a defect area on a base surface; 1-10 parts by weight of a siliceous coating waterproofing agent which is a single-liquid phase type, and includes a terpolymer re-emulsification type powder resin composed of vinyl acetate/ethylene/methyl methacrylate; and 30-50 parts by weight of a modified silicone surface protective agent which is a single-liquid phase type, and includes a reactive acrylic monomer, a reactive silicone monomer and an initiator.

Description

Silica-based coating waterproofing agent and eco-friendly modified silicone surface protectant using terpolymer re-emulsifying powder resin, and terpolymer silicic composite modified silicone waterproofing/corrosion method using the same. {SILICA BASED WATERPROOF AGENT USING TERPOLYMER REDISPERSIBLE POWDER AND SURFACE PROTECTION AGENT USING SILANE FOR WATERPROOF AND ANTICORROSION USING THE SAME}

The present invention relates to a water purification plant, a wastewater tank, a sewage/wastewater treatment plant, a pressurization plant, a pump plant, a storage tank, and other concrete structures such as a common pit, a machine room, a manhole, a pipe, a sewage box, a bridge, a pier, a tunnel, a median, an underground structure subjected to water pressure, and It relates to a silicic acid-based coating waterproofing agent using a terpolymer re-emulsifying powder resin applied for internal and external waterproofing and replacement, etc., an eco-friendly modified silicone surface protectant, and a terpolymer siliceous composite modified silicone waterproof/corrosive method using the same.

In general, there are distinct four seasons, and the climatic conditions of Korea, where the temperature of concrete structures change is severe, conditions in which the surface of concrete structures are always exposed to wet conditions due to the influence of groundwater, etc., conditions in which wetting and drying are repeated, and concrete structures Concrete structures exist under various conditions such as those that exist in fresh water or seawater, and regardless of any conditions, defects such as material separation, construction joints, cold joints, cracks, peeling, and dropping are likely to occur in the concrete structure. A cement admixture polymer is used to realize long life.

Among the polymers for cement admixture, the re-emulsifiable powder resin includes a copolymer powder resin made from two or more different monomers and a terpolymer powder resin containing three chemically different monomer units.

In the past, there have been many studies on these waterproofing materials, and these conventional waterproofing materials were composed of two types, such as a powder material and a polymer in a liquid dispersion state. The on-site mixing method in which these are mixed in an appropriate ratio at the construction site is widely used.

However, this conventional on-site mixing method is difficult to ensure the homogeneity of the material, requires high cost for packaging and transportation, and it is very difficult to mix in an appropriate ratio that shows the best physical properties, and the mixing is not constant, and the work efficiency and labor cost increase. , packaging cost rises, quality and durability are poor, freezing may occur in winter, and it is very difficult to control viscosity and fluidity.

And until now, waterproofing materials for concrete structures such as water purification plants, drainage basins, sewage/wastewater treatment plants, and storage tanks, machine rooms, pipes, manholes, and sewage boxes have been used for concrete spherical waterproofing, cement liquid waterproofing, and liquid absorption for concrete surface application. Preventive materials (liquid permeable waterproofing materials) and siliceous powder coated waterproofing materials (matrix permeable waterproofing materials) were used, but the current deterioration of concrete after several years and changes over time (aging, corrosion and deterioration according to the type and environmental conditions of water treatment facilities) ) and long-term external environmental changes, such as lifting and peeling, are frequently occurring.

The concrete spherical waterproofing is a material used for concrete performance improvement, strength enhancement, watertightness and waterproofing purposes by pouring concrete by mixing a waterproofing material with a ready-mixed concrete manufacturing or on-site ready-mixed concrete truck mixer, but cracks after concrete pouring, even if waterproofness and watertightness are secured, There is a disadvantage in that a separate waterproofing of the coating film is required even if spherical waterproofing is carried out because the ear-to-earth part, around the separator, gombo, and pinholes are inevitably generated.

Cement liquid waterproofing is a concrete structure by mixing a fatty acid-based waterproofing material of a complete type and an organic material such as sodium silicate and calcium chloride of a quick-setting type with cement, water, and sand to form a paste. , waterproof mortar, etc. are repeatedly applied to form a waterproof layer by lamination method 8 times, but microcracks may occur in the waterproof layer itself in places where the behavior/vibration of the sphere is expected or in a dry environment. Due to the influence of corrosion of rebar and the complicated process, its use is rapidly decreasing in recent years.

Liquid absorption prevention material for concrete surface coating (liquid permeable waterproofing) is a liquid organic polymer material (amorphous siliceous and silicone-based colorless, white, and milky white liquid waterproofing agent). When applied to concrete spheres, it penetrates and hardens into the pores to improve water repellency. It is a material that blocks water from penetrating from the outside by applying it, and by applying it to the surface layer for the purpose of protecting the concrete surface, it forms an absorption prevention layer and suppresses the penetration of ^{water and chloride ions (Cl -)} It is used for the purpose of preventing acid erosion and rebar corrosion.

However, since the liquid absorbent material is applied with a permeable material to the concrete sphere, it cannot cover countless voids, gaps, cracks, and cracks in the concrete, but exposes the concrete as it is poured, exposing many problems in appearance or waterproofing. In addition, the degree of penetration differs from manufacturer to manufacturer, and there is no resistance to cracking of the underlying concrete, and the effect is mainly observed in environments such as pits, machine rooms, manholes, and sewage boxes exposed to wet environments such as underground structures. Because it cannot be expected much, it requires in-depth careful observation from a long-term perspective, and it is a product that requires caution in use.

There are two types of siliceous powder coating waterproofing materials: mixing water with inorganic powder and mixing polymer dispersant and water with inorganic powder. Cement, particle size-adjusted silica sand and siliceous fine powder (active silica component), etc. It is composed and used by mixing a predetermined amount of water or a dedicated polymer dispersant.

When a siliceous coating waterproofing material is installed on the concrete surface, silicate ions (SiO2) are eluted from the active silica among the waterproofing material components and penetrated/diffused into the concrete. These silicate ions chemically react with calcium ions (CaO or Ca(OH)2) in the pores of concrete to form insoluble calcium silicate hydrates (fiber crystals) and ettringite (acicular crystals) to make the pores dense. It is a material that has watertightness and waterproofness.

However, since the siliceous waterproofing layer finish itself is a cementitious alkali component, it is applied to areas that do not come into contact with water, such as cavities, machine rooms, and pipes, due to restrictions on use under water quality conditions that contain chemicals such as acid or chlorine. Water resistance, durability, and chemical resistance A separate waterproofing/corrosive surface protection material (finishing) is used in places where acid and chlorine erosion is expected with weak weather resistance and crack resistance, but in underground structures that are subjected to water pressure such as water purification plants, drainage basins, common pits of sewage/wastewater treatment plants, and machine rooms. In addition, since it reacts with calcium hydroxide in cement to produce a polymer water-repellent material, the problem of lowering adhesion is raised when additional work such as painting, finishing, or bonding using water as a solvent is performed as a subsequent process.

And as a prior art for this, Republic of Korea Patent No. 10-0356354 ("Concrete spherical waterproofing material using pozzolan activator") is a powdery spherical waterproofing material mainly composed of fly ash and silica fume, and industrial by-products (fly ash, silica fume) It has the characteristic of being able to acquire economic and environmental effects according to the recycling of resources by using it as a main material.

And Republic of Korea Patent No. 10-0333347 (Method for manufacturing concrete powder-type spherical waterproofing agent) discloses a powder-type spherical waterproofing material used by mixing with hydraulic cement, which is a main material of zinc stearate, silica fume, silica sand, AE material, and fluidization. Disclosed is a method for manufacturing by adding paper lanterns.

And Republic of Korea Patent No. 10-1617722 ("Spherical waterproofing composition for mixing concrete") discloses a spherical waterproofing composition for concrete mixing with abrasion resistance by using highly reactive metakaolin (Metakaolin).

However, as described above, in an area where acid, chloride ions, etc. can easily penetrate from the outside, or in a reinforced concrete structure of an environmental pollution treatment facility, if a certain amount of acid anions or the like are present therein due to internal or external causes, these The passive film around the reinforcing bar is destroyed by the action of the rebar and the reinforcing bar is corroded. Therefore, the overall strength of the structure is reduced due to corrosion of the rebar, and the volume of the rebar expands to about 2.5 times the original volume due to corrosion, and cracks occur in the concrete due to the expansion pressure. And when cracks occur, oxygen or water supply easily penetrates through the cracks, which promotes corrosion of reinforcing bars and eventually leads to significant deterioration in the performance of the structure.

The present invention has been devised to solve the above problems, and since it is composed of a one-piece type, premix packaging is possible and only water is mixed and used in the field, so the safety and durability of quality can be secured. The purpose is to provide an eco-friendly modified silicone surface protection material waterproof/corrosive composition with a siliceous coating waterproofing agent and lamination using polymer re-emulsifying powder resin.

In addition, a terpolymer re-emulsification type that improves the working efficiency, labor cost, and quality and durability of the terpolymer siliceous waterproofing layer by using a one-component re-emulsifying resin in powder form with excellent compatibility with cement and excellent adhesion and waterproofing properties. An object of the present invention is to provide a siliceous coating waterproofing composition.

In addition, by laminating a modified silicone surface protection agent and applying the modified silicone surface protection layer twice as a middle and top coat, the physical/chemical internal resistance or durability of the modified silicone surface protection layer is increased to provide waterproof/corrosive effects, weather resistance, water repellency, stain resistance, It aims to provide a waterproof/corrosive method of terpolymer siliceous complex modified silicone that can maximize neutralization prevention.

A terpolymer siliceous composite modified silicone composition comprising a siliceous coating waterproofing agent and an eco-friendly modified silicone surface protectant using a terpolymer re-emulsifying powder resin according to the present invention for the purpose of solving the above problems is, 1 to 10 parts by weight of the defect filler, 1 to 10 parts by weight of a siliceous coating waterproofing agent comprising a terpolymer re-emulsifying powder resin composed of vinyl acetate/ethylene/methyl methacrylate, and 1 to 10 parts by weight and 30 to 50 parts by weight of a modified silicone surface protectant including a reactive acrylic monomer, a reactive silicone monomer, and an initiator.

In addition, the modified silicone surface protectant includes 10 to 20 parts by weight of the reactive acrylic monomer and 10 to 20 parts by weight of the reactive silicone monomer, wherein the reactive acrylic monomer includes methacrylate, and the reactive silicone monomer is methyltris- (isobutoxy)silane.

The modified silicon surface protective agent is formed using tetraethyl orthosilicate (TEOS), tetramethyl orthosilicate (TMOS) or both as a solvent.

In addition, the waterproofing/corrosion method using the terpolymer siliceous composite modified silicone composition is a background treatment step of treating the concrete substrate, and applying a siliceous coating waterproofing agent containing the terpolymer re-emulsifying powder resin on the upper part of the base layer. Forming a terpolymer siliceous waterproofing layer to form a terpolymer siliceous waterproofing layer, and forming a modified silicone surface protective layer by applying the modified silicone surface protection agent in a laminated manner on the terpolymer siliceous waterproofing layer to form a modified silicone surface protection layer includes

The present invention having the above configuration, steps and characteristics has the advantage of being able to secure the homogeneity of quality because it is configured in a one-piece type, so that premix packaging is possible and only water is mixed and used in the field.

In addition, it has the advantage that the performance of the terpolymer siliceous waterproofing layer can be improved by using a powder-type re-emulsifying resin having excellent compatibility with cement and excellent adhesion and waterproofing properties.

In addition, by applying the modified silicone surface protection layer as a two-layer coating film of the middle and top coat using the modified silicone surface protection agent, the physical/chemical internal resistance or durability of the modified silicone surface protection layer is increased to achieve the waterproof/corrosive effect as well as the silicone- It has the advantages of being excellent in weather resistance, water repellency, stain resistance, and neutralization prevention peculiar to acrylic.

1 is a view showing a waterproof/corrosive method using a terpolymer siliceous composite modified silicone composition according to the present invention.
Figure 2 is a view showing the process of filling the gaps in the capillary tube by chemically reacting silicate ions with calcium ions in the pores of concrete to generate insoluble calcium silicate hydrate.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification will be referred to only to distinguish that they are different components, and are not limited to the order of manufacture, and the names are not defined in the detailed description and claims of the invention. may not match.

The present invention is a terpolymer that is applied to water purification plants, drainage basins, sewage/water treatment plants, storage tanks, etc., which are composed of various concrete structures such as common pits, machine rooms, manholes, pipes, sewage boxes, bridges, piers, tunnels, median strips, and underground structures subjected to water pressure. It relates to a siliceous coating waterproofing agent using a re-emulsifying powder resin, an eco-friendly modified silicone surface protectant, and a terpolymer silicic composite modified silicone waterproofing/corrosion method using the same.

First, the ground treatment before waterproofing for concrete structures is performed before the construction of the terpolymer siliceous waterproofing layer in order to strengthen the adhesion between the concrete base and the terpolymer re-emulsified powder resin and the silicic acid-based waterproofing agent and the modified silicone surface protectant to secure durability. Flattening the raised and concave and convex parts, cleaning (high pressure water washing) so that foreign substances such as latency, dust, stone powder, oil, or mold release agent do not adhere to it, and repairing and reinforcing weak parts and leaking parts. It refers to the work of cleaning the base, arranging the base, and filling the defective part that must be completed before waterproofing work. At this time, the defect filler for securing the surface treatment of the concrete base and the smoothness of the base is an important factor in determining the coating state, quality, and durability of the waterproofing agent.

That is, when the base surface cannot be maintained smoothly due to holes, irregularities, microcracks, etc. present in the base surface, the waterproofing agent layer formed thereon has a non-uniform thickness and has pinholes, and the waterproof performance is greatly reduced.

In general, the concrete surface is not smooth due to mold step, form tie marks and protrusions. In addition, a mortar prepared by kneading cement and sand with water is usually used as a defect filler on the concrete surface. However, since the mortar defect filler has problems such as poor adhesion and it takes a long time for curing, a more improved waterproof/corrosive method for concrete using the defect filler is required.

Accordingly, in the present invention, a re-emulsifying terpolymer powder resin was used as a material for the defect filler and the terpolymer siliceous waterproofing layer 200 . In addition, 1 to 10 parts by weight of the defect filler and the siliceous coating waterproofing agent may be used.

In addition, the prepackaged type powdery waterproof/corrosive agent that can be constructed by adding only mixed water on the spot has the advantage that it has no on-site compatibility because it is blended at the time of manufacture, and the quality can be the same. , this is realized by using a terpolymer re-emulsifying powder resin in the present invention.

As a first embodiment, vinyl acetate / ethylene / methyl methacrylate (VA / E / MMA) resin may be used, which can provide improved physical properties, especially when using a copolymer re-emulsifying powder resin or liquid emulsion. There is a big advantage in that respect.

Here, the powdered resin is a dispersion material prepared by spray-drying a liquid resin, and when dispersed in mixed water, it becomes a safe liquid resin. The powdered resin dispersed in water forms an irreversible film that does not dissolve in water after drying, It improves tensile and flexural strength. In addition, it acts as a binder in the drying or curing process to increase adhesion with the organic/inorganic base treatment layer 100, abrasion resistance, etc., and to increase the water resistance, waterproofness and durability of the terpolymer siliceous powder resin waterproofing material. It has a function of preventing cracks caused by shrinkage and the like.

And as a second embodiment, the terpolymer re-emulsification type powder resin uses an ethylene-vinyl chloride-vinyl laurate system with strong weather resistance. Concrete or mortar containing cement has strong compressive strength, but during curing due to brittleness and reduced elasticity. Alternatively, it is possible to overcome the disadvantages of lifting and cracking after hardening and to maximize the adhesion and waterproofing performance.

When a terpolymer re-emulsifying powder resin is used, it dissolves in water and densely fills the voids between cement and hydrate and between cement and silica sand to form a connective tissue in which cement hydrate and polymer phase are integrated, enhancing adhesion, elasticity and brittleness as well as waterproofing performance. This can improve not only physical properties but also workability.

In addition, for the terpolymer re-emulsification type powder resin, a terpolymer of ethylene, vinyl laurate, and vinyl chloride is used alone, or based on the total weight of the terpolymer re-emulsification type powder resin, vinyl acetate (Vinyl acetate) A mixture of 10 to 20 parts by weight of a resin of a copolymer of ethylene and ethylene and 80 to 90 parts by weight of a terpolymer of ethylene and vinyl laurate and vinyl chloride may be used.

A resin made from a copolymer of vinyl acetate and ethylene plays a role in remarkably increasing adhesion, abrasion resistance and fluidity, and a water-soluble powder resin based on a terpolymer of ethylene, vinylolate and vinyl chloride provides waterproofness and absorption of water. plays a significant role in reducing

Therefore, by including the terpolymer re-emulsifying powder resin, adhesion is improved, as well as abrasion resistance, impact strength, waterproofness and workability are improved, and when mixed with water, it exhibits a homogeneous dispersion characteristic.

Next, looking at the modified silicone (silicone acrylic emulsion) surface protectant used in the present invention, its molecular structure is based on silicon in the form of a siloxane bond (Si-O bond) in which silicon and oxygen are alternated, and heat resistance This large, water-repellent material is superior to other pure organic materials in chemical resistance, aging resistance and non-volatility.

In addition, the reactive silicone monomer constituting the modified silicone replaces the surface of the coating film with a hydrophilic component, so that fine particulate adhesive substances mainly composed of black carbon, such as automobile exhaust gas, tire wear, and soot, which are the main causes of pollution, are chemically, It is used to physically adhere and prevent immobilization, and to increase the crosslinking density of the coating film to make it difficult for contaminants to penetrate, and even if contaminated, it is used so that the attached contaminants can be easily removed by rainwater. Of course, the above-mentioned reactive silicone monomer means an unsaturated monomer containing at least two or more polymerizable double bonds in its molecule.

Specifically, looking at the manufacturing method of the modified silicone surface protectant by emulsion polymerization, distilled water and a reactive silicone resin are administered to the reactor based on the total weight of the modified silicone surface protectant, and heated to remove oxygen and dissolve the initiator to prepare an emulsion. . Of course, the reactive silicone resin is composed of the above-described reactive silicone monomer, and 10 to 20 parts by weight of the reactive silicone resin is preferably included. When used in less than 10 parts by weight, there may be a problem in that water repellency is reduced, and 20 parts by weight When used in excess of parts, productivity deteriorates due to a decrease in reactivity, and a continuous coating film is not formed, which may cause problems in that water resistance is reduced.

And examples of these reactive silicone monomers include methyltris-(isobutoxy)silane, dimethyldipropoxysilane, ethyltris-(isopropoxy)silane, propyltris-(isobutoxy)silane, butyltributoxy Silane, octyltriethoxysilane, amyltributoxysilane, amyltriethoxysilane, β-(3,4-epoxycyclohexyl)ethyltris-(isobutoxy)silane, 3-glycidoxypropyltris-(isobu oxy)silane, 3-methacryloxypropyltris-(isobutoxy)silane, dodecyltriethoxysilane, vinyltris-(isopropoxy)silane, vinyltris-(isobutoxy)silane, phenyltriethoxysilane, 3-acryloxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, dimethylbis-(isobutoxy)silane, diethyldipropoxysilane, dibutylbis-(isopropoxy)silane, diphenyldiph Ropoxysilane, vinylmethylbis-isopropoxy)silane, 3-ethacryloxypropylmethyl-dibutoxysilane, and bis or trissilanes such as 1,2 bis-(alkoxy)silyl ethane and tris(3- triethoxysilylpropyl) isocyanurate, and these may be used alone or in combination of two or more.

Separately, 10 to 20 parts by weight of a reactive acrylic monomer, 5 to 10 parts by weight of a carboxylic acid or hydroxyl group-containing unsaturated monomer, 0.1 to 5 parts by weight of a crosslinking agent, and 0.1 to 5 parts by weight of an emulsifier are mixed with distilled water, an electrolyte and a surfactant. After preparing a pre-emulsion solution by administering to the emulsion, the initiator and the pre-emulsion solution are continuously added to the emulsion, heated to a temperature of 70 to 95° C., cooled to room temperature, and then adjusted to pH.

Here, the reactive acrylic monomer gives the function of smoothly adjusting the film strength and retaining/maintaining flexibility, but when used in less than 10 parts by weight, the emulsion reaction stability, storage stability, and adhesive force are not sufficiently exhibited. may exist, and when it is used in excess of 20 parts by weight, the viscosity stability of the obtained modified silicone surface protectant is lowered, and as a result, a problem of lowering water resistance may occur.

And the reactive acrylic monomer is methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, butyl (meth) acrylate, isobutyl acrylate, t-butyl meth acrylate, pentyl methacrylate, hexyl methacrylate, heptyl acrylate, isooctyl acrylate, octyl methacrylate, 2-ethylhexyl (meth) acrylate, isodecyl acrylate, decyl methacrylate, dodecyl methacrylate It may be at least one selected from the group consisting of acrylate, isobornyl methacrylate, and lauryl (meth) acrylate.

And the unsaturated monomer is methyl methacrylate, butyl acrylate, ethyl acrylate, normal-butyl methacrylate, iso-butyl methacrylate, hexyl acrylate, 2-ethylhexyl acrylate, normal-octyl acrylate, nonyl acrylate, decyl acrylate, lauryl acrylate, stearyl acrylate, vinyl acetate, vinyl propionate, and the like, but the present invention is not limited thereto. And the glass transition temperature value is preferably -10°C to +10°C. When the glass transition temperature value is low, a tack is generated and there may be a problem in coating properties during operation, and when the glass transition temperature value is high There may be a problem in that water resistance and water repellency are impaired due to poor film-forming properties.

In one specific example, the initiator is a water-soluble initiator, and may be a water-soluble polymerization initiator such as ammonium or alkali metal persulfate, hydrogen peroxide, peroxide, hydroperoxide, and the like, and reducing agent 1 to carry out the emulsion polymerization reaction at low temperature. It can also be used with more than one species.

Here, the reducing agent may be sodium bisulfite, sodium metabisulfite, sodium hydrosulfite, sodium thiosulfate, sodium formaldehyde sulfoxylate, ascorbic acid, or the like.

And the emulsifier serves to increase dispersion stability, and when the amount used is less than 0.1 parts by weight, there is a problem that the above function cannot be sufficiently obtained, and when used in excess of 5 parts by weight, water resistance is lowered or economical can't

And as an embodiment of the emulsifier, polyoxyalkylene alkenyl ether sulfate salt, allyl polyoxyalkylene ethylene oxide 10 mol sulfate ammonium salt, allyl polyoxyalkylene ethylene oxide 10 mol sodium salt, sodium vinyl sulfate, allyloxy polyethylene oxide Anionic reactive emulsifier such as 10 mole sulfate ammonium salt and 10 moles of vinyl alkoxylate ethylene oxide, 20 moles of vinyl alkoxylate ethylene oxide, 30 moles of vinyl alkoxylate ethylene oxide, 10 moles of allyl alkoxylate ethylene oxide, and allyl alkoxylate and nonionic reactive emulsifiers such as 20 moles of ethylene oxide and 30 moles of allyl alkoxylate ethylene oxide, but the present invention is not limited thereto.

They penetrate the concrete surface and the terpolymer siliceous waterproofing layer 200, react with calcium hydroxide inside the concrete, and are integrated with the base layer 100 and the terpolymer siliceous waterproofing layer 200, thereby preventing the intrusion of water, which is a major factor of deterioration. In addition to the performance, it is possible to have the vapor permeability of evaporating gaseous water vapor from the inside together.

And as another embodiment of the modified silicone surface protectant, an organic-inorganic composite composition using a TEOS (Tetra ethyl ortho silicate) solvent as a vinyl trimethoxysilane copolymer may be used.

Another advantage is that there is no discoloration of the surface protection agent due to direct sunlight, and it penetrates the concrete surface and the terpolymer siliceous waterproofing layer 200 as a nano size to form an integration with the base layer 100, and calcium hydroxide present in the concrete When it meets, the liquid phase changes to a solid phase, and due to excellent water resistance, peeling or peeling by immersion in water does not occur at all, and salt resistance, neutralization resistance, and chemical resistance are also excellent.

And, in the methods of polymerizing polymers using existing petroleum solvents, most of the substances used as solvents are harmful to the human body, and the solvent only dissolves the polymer to lower the viscosity of the synthesized polymer, and controls the heat of polymerization during polymerization. However, it is eventually volatilized as inactive ingredients. On the other hand, in the case of the modified silicone surface protectant according to the present invention, an inorganic material such as tetraethyl orthosilicate (TEOS) or tetramethyl orthosilicate (TMOS) is used as a solvent to form an organic/inorganic polymer complex that existing polymers do not have. By doing so, it is possible to provide an environmentally friendly composition of 100% active ingredient. Of course, a solvent in which the TEOS and TMOS are mixed may be used.

Next, a waterproof/anticorrosive method (terpoly-safe method) using a terpolymer siliceous composite modified silicone composition will be described.

First, in the Terpoly-Safe method, as shown in FIG. 1 , a background treatment (defective filler) is applied to the concrete surface. The defect filler is filled with tools such as a trowel and a spatula so that there are no steps or gaps. This background treatment (defect filling) application step completely removes foreign substances such as formwork gaps, protrusions, laitance, form release agent, and dust on the concrete base surface, and also in vulnerable areas such as concrete joint parts, cracks, and leaking parts. Use a filler material in the joint to prevent the step difference by using an iron trowel or a spatula for weak and defective areas such as cracks, material separation, and jointing.

By the background treatment step, which includes the defect filling process of filling the base surface with the defect filler, the defect filler is made of the same material as the terpolymer re-emulsification type siliceous waterproofing material to fill the defect areas such as steps and gaps with concrete. Integration and durability can be improved, and the adhesion strength is very excellent, ranging from 17.3 kgf/cm 2 to 33 kgf/cm 2 .

In addition, the base treatment layer 100 has excellent acid resistance and chemical resistance, catches cracks, mold steps and pinholes in concrete, has excellent waterproof performance, and has excellent adhesion performance between the terpolymer siliceous waterproofing layer and the waterproof/corrosive layer. Do.

Next, a siliceous coating waterproofing agent including a terpolymer re-emulsifying type siliceous powder resin is applied on the base layer 100 .

That is, when a terpolymer siliceous coating waterproofing agent is mixed with water mixed with a re-emulsifying polymer dispersant and applied, silicate ions (SiO ₂ ) are eluted from the siliceous fine powder (activated silica) in the waterproofing agent and penetrated/diffused into the concrete. At this time, the generated crystals block the passage of water molecules, thereby forming a complete terpolymer siliceous-based terpolymer siliceous-based waterproofing layer 200 having excellent waterproofing effect and excellent durability and adhesion.

As shown in FIG. 2 , these silicate ions _{chemically react with calcium ions (CaO or Ca(OH) 2} ) in the pores of concrete to form insoluble calcium silicate hydrates to fill gaps in the capillary. In addition to the calcium silicate hydrate, ettringite may be secondary.

Since all these reactions are penetration/diffusion phenomena that occur through water, it is essential to wet the concrete as a base with water and fill the capillary voids in the concrete with water before construction.

The penetration characteristics of the terpolymer siliceous coating waterproofing agent were observed by SEM on the formation of fibrous and needle-like crystals in the concrete coated with the terpolymer siliceous coating waterproofing agent. crystals increase. The physical properties for this can be confirmed in Table 1 below.

In addition, it can be seen that the mortar coated with the silicic acid-based waterproofing agent does not cause grinding on the surface of the terpolymer siliceous waterproofing layer, has excellent adhesion and compressive strength, and has very little absorption.

Next, a modified silicone surface protection agent is applied on the top of the terpolymer silicic acid-based waterproofing layer 200 . A characteristic point here is that the modified silicone surface protection agent is applied as a two-layer coating film of a middle and top coat, thereby increasing the physical/chemical internal resistance or durability of the modified silicone surface protection layer 300, thereby increasing the waterproof/corrosive effect, weather resistance, water repellency, and resistance Contamination and neutralization prevention can be maximized.

Tables 2 and 3 below are tables showing the physical properties of the modified silicone surface protection layer 300 constructed using the modified silicone surface protection agent, and the appearance after coating film formation, neutralization depth, chloride ion penetration resistance, moisture permeability, water permeability resistance , adhesion strength, crack responsiveness, etc. can be confirmed.

On the other hand, the terpolymer siliceous composite modified silicone composition according to the present invention may further include 1 part by weight of a functional additive, and by adding the functional additive It is possible to effectively remove nitrogen oxides, organic halogen compounds, and odorous gases present in the atmosphere.

The functional additive is 100 parts by weight of the binder, 12 parts by weight of titanium tetra isopropoxide, 0.3 parts by weight of platinum ion, 12 parts by weight of polyphenylmethylsiloxane, 40 parts by weight of polydimethoxysilane, 5 parts by weight of polychlorinated phosphonitrile, 3.8 parts by weight of isoto, 2 parts by weight of vinyl acetate, 0.1 parts by weight of zinc hydroxide, and 0.1 parts by weight of an oxirane polymer.

Looking at each configuration, silicon alkoxide may be used as the binder, and the content of each composition of the functional additive is based on 100 parts by weight of the binder.

Next, the titanium tetra isopropoxide is a precursor of titanium dioxide, which is stirred with platinum ions to be described later to reduce the energy gap between the conduction band and the balance band of titanium dioxide to produce platinum-titanium dioxide.

Therefore, platinum-titanium dioxide can create an active state not only in the ultraviolet region but also in the visible region, and in the active state, electrons and holes move to the surface and combine with oxygen and hydroxyl groups to form radicals, respectively, to form nitrogen oxides and organic halogen compounds The back can be removed.

And titanium tetra isopropoxide ((CH ₃ ) ₂ CHO) ₂ Ti(C ₅ H ₇ O ₂ ) ₂ It may be used, the titanium tetra isopropoxide contains 12 parts by weight, When used in less than 12 parts by weight, nitrogen oxides, organic halogen compounds, and the like cannot be effectively removed, and when used in excess of 12 parts by weight, it is difficult to form a narrow energy band gap.

Next, platinum ions are stirred with the titanium tetra isopropoxide to produce platinum-titanium dioxide, and can be obtained from chloroplatinic acid or the like, and the stirring process can be performed according to a conventional method. These platinum ions are contained in 0.3 parts by weight, when used in less than 0.3 parts by weight, platinum-titanium dioxide energy band interval cannot be effectively reduced, and when used in excess of 0.3 parts by weight, it is not economical.

Next, polyphenylmethylsiloxane is a material for inhibiting the active state of platinum-titanium dioxide by stirring with the platinum-titanium dioxide, and when the platinum-containing materials constituting the terpolymer siliceous composite modified silicone composition are polymerized, the platinum- Titanium dioxide prevents rapid oxidation of other materials, and it is preferable to add the same amount as platinum-titanium dioxide.

Next, polydimethoxysilane and polychlorinated phosphonitrile are used as materials for decomposing the polyphenylmethylsiloxane, which are added after stirring platinum-titanium dioxide and polyphenylmethylsiloxane, and the polyphenylmethylsiloxane Platinum-titanium dioxide, the active state of which was suppressed while slowly decomposing the terpolymer, is able to perform oxidation after the terpolymer siliceous composite modified silicon composition is completely polymerized. And it is preferable that 40 parts by weight of this polydimethoxysilane and 5 parts by weight of polychlorinated phosphonitrile are used, and when using less than 40 parts by weight and 5 parts by weight, respectively, the decomposition rate of the polyphenylmethylsiloxane is too high It may slow down and lead to a decrease in the oxidizing power of platinum-titanium dioxide, and when used in excess of 40 parts by weight and 5 parts by weight, respectively, the decomposition rate of the polyphenylmethylsiloxane becomes too fast, and the terpolymer due to the strong oxidizing power of platinum-titanium dioxide When the materials constituting the siliceous composite modified silicone composition are polymerized, a surface reaction delay may occur due to oxygen.

That is, when the materials constituting the terpolymer siliceous composite modified silicone composition are polymerized, it is possible to prevent the delay of the surface reaction by oxygen caused by the oxidizing power of platinum-titanium dioxide through polyphenylmethylsiloxane, After the materials constituting the terpolymer siliceous composite modified silicone composition are completely polymerized by slowly decomposing the polyphenylmethylsiloxane through polydimethoxysilane and the polychlorinated phosphonitrile, platinum-titanium dioxide will exert its oxidizing power. to make it possible

Next, isoto is added to increase emulsion stability, and it is preferable to use 3.8 parts by weight, but when using less than 3.8 parts by weight, the emulsification cannot be improved, and when used in excess of 3.8 parts by weight In this case, economic feasibility and deterioration of physical properties may occur.

Next, vinyl acetate, zinc hydroxide and oxirane polymer are substances that are softened or dissolved in an alkaline atmosphere, and before the terpolymer siliceous composite modified silicone composition is injected into concrete having an alkaline atmosphere, the vinyl acetate is , Zinc hydroxide and oxirane polymers can have a harmful effect on humans (strong irritation if they enter the eyes, etc.)

After the terpolymer siliceous composite modified silicone composition is injected into the concrete, the vinyl acetate, zinc hydroxide and oxirane polymer are softened or decomposed, and the emulsion stability effect of the isoto can be exhibited. And based on 2 parts by weight of the vinyl acetate corresponding to the resin binder, 0.1 parts by weight of zinc hydroxide having high solubility in an alkali region and 0.1 parts by weight of an oxirane polymer having high solubility in an alkali region may be included, but used in less than the above range In this case, it is difficult to suppress the thickening effect of the isoto before the composition is injected into the concrete, and when used in excess of the above range, it is difficult to obtain the thickening effect of the isoto after the present composition is injected into the concrete. do.

The present invention described above with reference to the accompanying drawings is capable of various modifications and changes by those skilled in the art, and such modifications and changes should be construed as being included in the scope of the present invention.

100: background treatment layer 200: terpolymer siliceous waterproofing layer
300: modified silicon surface protective layer

Claims (4)

1 to 10 parts by weight of a defect filler for filling defects in the concrete base;
1 to 10 parts by weight of a siliceous coating waterproofing agent consisting of a one-component type and comprising a terpolymer re-emulsifying powder resin composed of vinyl acetate/ethylene/methyl methacrylate; and
30-50 parts by weight of a modified silicone surface protectant comprising a one-component type, reactive acrylic monomer, reactive silicone monomer, and initiator;
including,
1 part by weight of a functional additive,
The functional additive is 100 parts by weight of the binder, 12 parts by weight of titanium tetra isopropoxide, 0.3 parts by weight of platinum ion, 12 parts by weight of polyphenylmethylsiloxane, 40 parts by weight of polydimethoxysilane, 5 parts by weight of polychlorinated phosphonitrile, A terpolymer siliceous composite modified silicone composition comprising 3.8 parts by weight of isoto, 2 parts by weight of vinyl acetate, 0.1 parts by weight of zinc hydroxide, and 0.1 parts by weight of an oxirane polymer.
The method according to claim 1,
The modified silicone surface protectant comprises 10 to 20 parts by weight of the reactive acrylic monomer and 10 to 20 parts by weight of the reactive silicone monomer,
The reactive acrylic monomer includes methacrylate, and the reactive silicone monomer includes methyltris-(isobutoxy)silane.
The method according to claim 1,
The modified silicone surface protection agent is a terpolymer siliceous composite modified silicone composition, characterized in that it is formed using tetraethyl orthosilicate (TEOS), tetramethyl orthosilicate (TMOS) or both as a solvent.
In the waterproof/corrosive method using the terpolymer siliceous composite modified silicone composition according to claim 1,
Including a defect filling process, the background processing step of processing the concrete substrate;
A terpolymer siliceous waterproofing layer forming step of forming a waterproofing layer by applying a silicic acid-based coating waterproofing agent containing the terpolymer re-emulsifying powder resin on an upper portion of the background treatment layer; and
A modified silicone surface protection layer forming step of forming a surface protection layer by applying the modified silicone surface protection agent on the waterproof layer in a laminated manner;
A terpolymer siliceous complex modified silicone waterproof/corrosive method comprising a.

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