KR20130094093A - Coating composition of water supply and drain pipe for waterproof and contamination preventation and manufacturing method thereof - Google Patents

Coating composition of water supply and drain pipe for waterproof and contamination preventation and manufacturing method thereof Download PDF

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KR20130094093A
KR20130094093A KR1020120015483A KR20120015483A KR20130094093A KR 20130094093 A KR20130094093 A KR 20130094093A KR 1020120015483 A KR1020120015483 A KR 1020120015483A KR 20120015483 A KR20120015483 A KR 20120015483A KR 20130094093 A KR20130094093 A KR 20130094093A
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South Korea
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coating composition
water
sewage
waterproofing
conduits
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KR1020120015483A
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Korean (ko)
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송호면
노창섭
최영선
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한국건설기술연구원
티오켐 주식회사
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Priority to KR1020120015483A priority Critical patent/KR20130094093A/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04Homopolymers or copolymers of esters
    • C08L33/06Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/08Homopolymers or copolymers of acrylic acid esters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04Homopolymers or copolymers of esters
    • C08L33/06Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12Homopolymers or copolymers of methyl methacrylate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1656Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662Synthetic film-forming substance
    • C09D5/1675Polyorganosiloxane-containing compositions
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/63Additives non-macromolecular organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/65Additives macromolecular
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/66Additives characterised by particle size
    • C09D7/67Particle size smaller than 100 nm
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/64Nanometer sized, i.e. from 1-100 nanometer

Abstract

The present invention relates to a coating composition for waterproofing and preventing contamination of water and sewage conduits, and to a method of manufacturing the same, and to watering and sewage conduits that are more likely to be damaged and collapsed from water and sewage conduits promoted due to corrosion of concrete surfaces and rebar corrosion due to water infiltration. The composition coated on the water and sewage conduits so as to prevent the contamination of the groundwater quality and soil caused by the poor water and sewage conduits and the infiltration of the water and sewage conduits of the ground water and the runoff, and to prolong the life of the water and sewage conduits by preventing them during the life of It is an object to provide a manufacturing method. The present invention for achieving the above object is a coating composition coated for waterproofing and pollution prevention of water and sewage conduit, alkoxysilane; menstruum; Inorganic nanomaterials for enhancing the adhesion of the coating composition to water and sewage conduits to be coated; Dissociating agents provided such that the coating composition does not aggregate; Acrylic resins for imparting flexibility to the coating composition; And it provides a coating composition for waterproofing and pollution prevention of water and sewage conduit containing fluorine silane for imparting stain resistance to the coating composition.

Description

COATING COMPOSITION OF WATER SUPPLY AND DRAIN PIPE FOR WATERPROOF AND CONTAMINATION PREVENTATION AND MANUFACTURING METHOD THEREOF}

The present invention relates to a coating composition for waterproofing and preventing contamination of water and sewage conduits, and to a method of manufacturing the same, and to watering and sewage conduits that are more likely to be damaged and collapsed from water and sewage conduits promoted due to corrosion of concrete surfaces and rebar corrosion due to water infiltration. The composition coated on the water and sewage conduits so as to prevent the contamination of the groundwater quality and soil caused by the poor water and sewage conduits and the infiltration of the water and sewage conduits of the ground water and the runoff, and to prolong the life of the water and sewage conduits by preventing them during the life of It relates to a manufacturing method.

In general, water and sewage conduits produce various defects such as breakage, cracking, corrosion, wear, deformation, and leakage due to long-term use. Due to these defects, water pollution and the like are seriously emerging, and accordingly, the repair and reinforcement of the sewage pipes is necessarily performed.

In addition, concrete moldings, such as centrifugal reinforced concrete pipes, core prestressed concrete pipes, roller voltage concrete pipes, reinforced concrete pipes, commercialized reinforced concrete square pipes, and cast-in-place reinforced concrete pipes, may be used to construct sewage pipes. Rebar is placed on,

However, these concrete moldings have a short life due to rapid aging due to corrosion of concrete and steel due to their permeability and chemical properties of sewage, and the constant or sewage inside the sewage conduits due to aging and breakage of water and sewage conduits. In particular, the sewage inside the sewage pipe is leaked out to contaminate groundwater and soil.

Water and sewage conduits do not need to take into account internal pressures except in special cases, but they must be constructed of materials and structures that can withstand external pressures.

In addition, the design flow rate, material, connection method, shape, construction cost and future maintenance, as well as various conditions of the buried place should be selected reasonably in water and sewage conduit.

Some of the rigid pipes used in Korea are weak to corrosion resistance and are affected by hydrogen corrosion and acids, alkalis, wastewater, salts and organics.

In addition, some of the rigid pipes are more fragile because of the weaker impact than the soft pipes, fracture occurs during uneven settlement of the ground, heavy weight is difficult to transport and install, and inconvenient on-site management.

On the other hand, flexible pipe is weaker in external pressure and heat than rigid pipe, but it has better corrosion resistance. However, photochemical reactions can occur and they are easy to handle due to their light weight, but there are problems of rupture, deflection and deformation in terms of materials.

On the other hand, sewage conduits of water and sewage conduits serve to safely transport contaminated water discharged from homes and factories to public treatment plants. Since the water moved through such sewage pipes is dirty and odorous, most of them have been constructed in the form of pipelines underground.

Most of these underground pipeline sewage conduits adopt gravity transport, so leakage due to corrosion of sewage pipelines can cause immediate environmental pollution due to soil pollution and inflow of unknown water.

In the case of sewage pipes, most of the concrete pipes are confined according to the flow rate of sewage in the pipes, and thus, stagnant and stagnant water becomes anaerobic, causing corrosion of the wells. This causes flooding of the upstream area due to the lowering of the pipe's water permeability, and causes various accidents by causing ground depression and the like.

In order to prevent such a phenomenon, not only the surface of the sewage conduit should be smooth so as not to reduce the flow rate, but also measures such as coating of acid resistant materials should be taken.

The lining of concrete pipes generally performs liquid epoxy lining. Epoxy has a short pot life, which hardens during operation, has poor weather resistance and heat resistance, contains harmful substances such as bisphenol A, and has a weak antifouling performance on its own. have. In addition, there is a problem that the adhesive strength is poor due to the lifting phenomenon when painting over moisture.

According to the conventional technology, the organic compound-based coating agent of the conventional epoxy resin, urethane resin, acrylic resin, etc. is lowered in the adhesive strength due to the difference in thermal expansion coefficient and elastic modulus with the concrete, discoloration and lifting phenomenon there is a problem.

As a countermeasure against this, Korean Patent No. 10-0494993 proposes a technique in which an alkoxy silane and a permeable water repellent are treated in the pores of the surface of concrete or cement structure. This method is effective in suppressing the penetration of moisture due to its excellent initial waterproof performance, but over time, the alkoxy silane dislodges from the structure, and it does not withstand micro cracks, so it has to be repainted and the remaining water repellent The lipophilic layer has a disadvantage that the adhesion is significantly lower.

In addition, the Republic of Korea Patent Publication No. 2001-0064300 is a permeability to obtain a waterproofing effect by applying an alkali metal silicate aqueous solution to the concrete surface and the alkali metal silicate component penetrated into the concrete reacts with calcium hydroxide in the concrete to form an insoluble gel I offer a waterproofing agent. However, the alkali metal silicate aqueous solution uses sodium silicate, potassium silicate, lithium silicate, etc., which are difficult to penetrate by gelation reaction on the concrete surface before penetrating into concrete by rapid reaction with concrete. Due to its nature, there is a problem in that it dissolves upon contact with water for a long time.

Therefore, the present invention has been proposed to solve the above-described problems, and excellent waterproofing performance at the same time to suppress the penetration of water and at the same time facilitate the penetration into the concrete and improve the adhesion, and long-term with water It is an object of the present invention to provide a coating composition and a method for producing the same for waterproofing and preventing contamination of water and sewage conduits, which can maintain their initial state even during contact over the life of the water and sewage conduits.

In addition, the present invention is to prevent groundwater and soil contamination and groundwater caused by poor water and sewage conduit by preventing the breakage and collapse of water and sewage conduit promoted for reasons such as concrete surface corrosion and reinforcing steel corrosion due to water infiltration And it is another object to provide a coating composition and a method for producing the coating composition for preventing water and sewage contaminated water can be prevented infiltration of water and sewage conduit, and can extend the life of water and sewage conduit.

Specifically, the present invention not only increases the surface strength by penetrating the organic-inorganic hybrid coating material mixed with nano-size inorganic material and acrylic resin on the surface of the concrete molding, but also useful for waterproofing and pollution prevention using a ceramic coating containing fluorine. Another object is to provide a coating composition and a method of preparing the same for waterproofing and preventing contamination of water and sewage conduits capable of enhancing antibacterial properties by the addition of an inorganic antibacterial agent.

According to a first aspect of the present invention for achieving the above objects, a coating composition coated for waterproofing and pollution prevention of water and sewage conduit, alkoxysilane; menstruum; Inorganic nanomaterials for enhancing the adhesion of the coating composition to water and sewage conduits to be coated; Dissociating agents provided such that the coating composition does not aggregate; Acrylic resins for imparting flexibility to the coating composition; And it provides a coating composition for waterproofing and pollution prevention of water and sewage conduit containing fluorine silane for imparting stain resistance to the coating composition.

It is preferable to further include an inorganic antibacterial agent for imparting antimicrobial and bactericidal function to the coating composition.

The alkoxysilane may be methyltrimethoxysilane (CH 3 Si (OCH 3 ) 3 ), tetraethoxysilane (Si (OC 2 H 5 ) 4 ), γ-glycidoxypropyltrimethoxysilane ( It is characterized in that the mixture of γ-Glycydoxypropyltrimethyoxysilane, CH 2 OCHCH 2 O (CH 2 ) 3 Si (OCH 3 ) 3 ).

The solvent is a mixture of isopropanol, butanol, methylcellosolve, diacetone alcohol, and the dissociating agent is acetic acid.

The inorganic nano material is a mixture of titanium sol having an average particle size of 15 nm, alumina sol having an average particle size of 53 nm, and silica sol having an average particle size of 15 nm, wherein the acrylic resin is methyl methacrylate and butyl acrylate. It is done.

The fluorine silane is heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 Si (OCH 3 ) 3 ), and the inorganic antimicrobial agent ionizes 6% silver particles in zeolite. It is characterized by the powder exchanged.

When the composition ratio of the coating composition is based on the total weight percent of the coating composition, the alkoxysilane is 30-40%; The solvent comprising isopropanol, butanol, methylcellosolve, diacetone alcohol is 25-35%; 20 to 30% of the inorganic nanomaterial including titanium sol, alumina sol, and silica sol; Acetic acid 1 to 2% of the dissociating agent; 3-4% of the acrylic resin; And 1 to 2% of fluoroalkylsilane, which is the fluorine silane, and the composition ratio of the inorganic antimicrobial agent is preferably 1 to 2% based on the total weight of the coating composition.

According to the second aspect of the present invention, as a method for producing a coating composition for waterproofing and preventing contamination of water and sewage conduits, methyltrimethoxysilane, tetraethoxysilane and γ-glycidoxypropyltrimethoxysilane are mixed. Providing an alkoxysilane; Adding a solvent containing isopropanol, butanol, methylcellosolve, and diacetone alcohol to the alkoxysilane and heating and stirring; In the heating and stirring process, inorganic nanomaterials of titanium sol having an average particle size of 15 nm, alumina sol having an average particle size of 53 nm, and silica sol having an average particle size of 15 nm are added dropwise; After the dropping, acetic acid, which is a dissociating agent; Adding acrylic resin; For waterproofing and pollution prevention of water and sewage conduits, including the addition of fluorine silane heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 (Si (OCH 3 ) 3 )) Provided are methods for preparing the coating composition.

The heating and stirring step is preferably stirred for 1 hour at 45 ℃.

After adding the fluorine silane, it may further comprise adding an inorganic antimicrobial agent which is a powder obtained by ion-exchanging 6% silver particles to the zeolite.

When the composition ratio of the coating composition is based on the total weight percent of the coating composition, the alkoxysilane is 30-40%; The solvent comprising isopropanol, butanol, methylcellosolve, diacetone alcohol is 25-35%; 20 to 30% of the inorganic nanomaterial including titanium sol, alumina sol, and silica sol; Acetic acid 1 to 2% of the dissociating agent; 3-4% of the acrylic resin; The fluorine silane is 1 to 2%; And the inorganic antimicrobial agent is preferably 1 to 2%.

According to the coating composition for waterproofing and preventing contamination of water and sewage conduits according to the present invention has the following effects.

First, the present invention is excellent in the initial waterproof performance to inhibit the penetration of moisture and at the same time easy to penetrate into the concrete to improve the adhesion, and maintain the initial state during the life of the water and sewage conduit even in contact with water for a long time It can be easily repaired and maintained.

Second, the present invention is to prevent groundwater and soil contamination and groundwater caused by poor water and sewage conduit by preventing breakage and collapse of water and sewage conduits promoted due to the corrosion of concrete surface and reinforcing steel due to water infiltration. And it is possible to prevent the inflow of water and sewage conduit of running water, there is an effect that can extend the life of water and sewage conduit.

Third, the present invention not only increases the surface strength by penetrating the organic-inorganic hybrid coating material mixed with nano-size inorganic material and acrylic resin on the surface of the concrete molding, but also useful for waterproofing and pollution prevention using a ceramic coating containing fluorine. , It is effective to strengthen the antibacterial by the addition of inorganic antibacterial agents.

Figure 1 is a photographic material showing water and sewage conduit coated with a ceramic coating agent coating composition according to the present invention.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation, Software. ≪ / RTI >

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, the coating composition for waterproofing and preventing contamination of water and sewage conduits according to the present invention will be described.

The coating composition of the water and sewage conduit according to the present invention comprises alkoxysilane which is a main component of the coating composition; menstruum; Inorganic nanomaterials as nanoparticles for penetrating deep into water and sewage conduits to promote adhesion; Dissociating agents included to prevent the coating composition from agglomerating; Acrylic resins for imparting flexibility to the coating composition; And fluoroalkylsilanes, which are fluorinesilanes for imparting stain resistance to the coating composition.

Here, the coating composition according to the present invention further comprises an inorganic antibacterial agent for imparting antimicrobial and bactericidal function to the coating composition.

Herein, the alkoxysilane is methyltrimethoxysilane (CH 3 Si (OCH 3 ) 3 ), tetraethoxysilane (Si (OC 2 H 5 ) 4 ), γ-glycidoxypropyltrimeth A mixture obtained by mixing a oxysilane (γ-Glycydoxypropyltrimethyoxysilane, CH 2 OCHCH 2 O (CH 2 ) 3 Si (OCH 3 ) 3 ) in a predetermined ratio is used.

As the solvent, a mixture obtained by mixing isopropanol, butanol, methyl cellosolve, and diacetone alcohol in a predetermined ratio is used.

In addition, the inorganic nanomaterial uses a mixture of titanium sol having an average particle size of 15 nm, alumina sol having an average particle size of 53 nm, and silica sol having an average particle size of 15 nm.

In addition, acetic acid is used as said dissociating agent, and the said acrylic resin manufactures and uses resin whose main components are methyl methacrylate and butyl acrylate.

As the fluorine silane, heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 Si (OCH 3 ) 3 ), which is a kind of fluoroalkylsilane, is used.

On the other hand, the inorganic antimicrobial agent is characterized by using a powder ion-exchanged 6% silver particles in the zeolite.

Specifically, the composition ratio of the coating composition of the water and sewage conduit according to the present invention, when based on the total weight percent of the coating composition, the alkoxysilane is 30 to 40%; The solvent comprising isopropanol, butanol, methylcellosolve, diacetone alcohol is 25-35%; 20 to 30% of the inorganic nanomaterial including titanium sol, alumina sol, and silica sol; 1 to 2% acetic acid, dissociating agent; 3-4% of the acrylic resin; And it is preferable that it is 1 to 2% of fluoroalkylsilane which is the said fluorosilane.

And the inorganic antimicrobial is characterized in that 1 ~ 2%. Here, reaction temperature is 40-50 degreeC.

The inventor of the present invention confirmed the effect through the manufacturing and experimental results through the specific examples for each component described above. The embodiments illustrated below are for illustrative purposes of the present invention and the present invention is not limited by these embodiments.

Example 1

Into a 5-liter reactor equipped with a cooler and a stirrer, 800 g of methyltrimethoxysilane, 500 g of tetraethoxysilane, and 100 g of γ-glycidoxypropyltrimethoxysilane were mixed to prepare an alkoxysilane, followed by 500 g of isopropanol as a solvent. 300 g of butanol, 220 g of methyl cellosolve, and 200 g of diacetone alcohol were added thereto, and the mixture was heated and stirred at 45 ° C. for 1 hour.

In the process of stirring and heating as described above, an inorganic nanomaterial is added dropwise, 200 g of titanium sol (10 wt% TiO 2 ) having an average particle size of 15 nm, and 100 g of alumina sol (20 wt% Al 2 O 3 ) having an average particle size of 53 nm, 700 g of silica sol having an average particle size of 15 nm was slowly added dropwise.

Then, after dropping all in this way, 60 g of acetic acid as a dissociating agent was added to react for 12 hours to obtain a ceramic coating agent as a coating composition.

Here, after 200g of acrylic resin was added and reacted for 1 hour, 60 g of Heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 (Si (OCH 3 ) 3 )), a kind of fluoroalkylsilane, which was fluorine silane, was added thereto. In addition, 60 g of inorganic antimicrobial agent (6% Ag) was added thereto, followed by aging at room temperature for 5 days to prepare a coating composition for waterproofing and preventing contamination of water and sewage conduits containing fluorine and inorganic antibacterial agent.

Example 2

Example 2 was the same as in Example 1 except for the addition of 30 g of the amount of Heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 (Si (OCH 3 ) 3 ) in the preparation of the coating composition of Example 1 Prepared.

Comparative Example 1

When preparing the coating composition of Example 1, except that the addition of silica sol, titanium sol, alumina sol was prepared in the same manner as in Example 1.

Comparative Example 2

In preparing the coating composition of Example 1, except for the addition of Heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 (Si (OCH 3 ) 3 ) addition and production was the same as in Example 1.

Test Methods

First, a 20 cm × 20 cm glass test piece coated with a coating composition was obtained in order to test various items as described below with respect to the coating compositions obtained in Examples 1 and 2 and Comparative Examples 1 and 2.

1) Hardness Measurement

In the hardness measurement method, a pencil hardness tester was used to measure pencil hardness by repeating 10 mm with 5 kg (KS D 6711) with a 1 kg f force.

2) waterproof test

Water resistance can be measured by a water repellency test, the water repellency test was dried for 20 minutes at 150 ℃ the glass test piece was measured for water repellency by the JIS-S-1092 spray method. The water repellency is 100: no moisture on the surface, 90: some moisture on the surface, 80: slightly wet on the surface, 70: wet on the surface.

3) pollution resistance test

The pollution resistance test method was tested in accordance with the Housing Specification: 2009.

4) Test result

     Table 1 below shows the performance comparison table, which is the result of various tests for the above examples and comparative examples.

Item Example 1 Example 2 Comparative Example 1 Comparative Example 2 Hardness 8H 8H 4H 8H Water repellency 100 90 100 70 Stain resistance clear clear clear Has abnormal

Examples 1 and 2 in the present invention can be seen that the excellent performance in all hardness, water repellency and fouling resistance, in particular Comparative Example 1 is a comparative example that the hardness is weak when prepared without silica sol, titanium sol, alumina sol 2 shows that the pollution resistance is low since it is not erased by the experiment of the meteor magic.

As described above, according to the present invention, a coating composition for waterproofing and preventing contamination of water and sewage conduits according to the present invention, and a method of manufacturing the same, have excellent initial waterproofing properties, inhibit penetration of moisture and easily penetrate into concrete, and thus adhesiveness. It is possible to maintain the initial condition even after long-term contact with water, and it is easy to repair and maintain.

In addition, the present invention is to prevent groundwater and soil contamination and groundwater caused by poor water and sewage conduit by preventing the breakage and collapse of water and sewage conduit promoted for reasons such as concrete surface corrosion and reinforcing steel corrosion due to water infiltration And it is possible to prevent the inflow and outflow of water and sewage conduit, can extend the life of water and sewage conduit.

In addition, the present invention not only increases the surface strength by penetrating the organic-inorganic hybrid coating agent mixed with nano-size inorganic material and acrylic resin on the surface of the concrete molding, but also useful for waterproofing and pollution prevention using a ceramic coating containing fluorine , Antimicrobial activity can be enhanced by the addition of inorganic antibacterial agents.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes within the scope not departing from the technical spirit of the present invention are possible in the art. It will be evident to those who have knowledge of.

Claims (8)

A coating composition coated for waterproofing and pollution prevention of water and sewage conduits,
Alkoxysilanes; menstruum; Inorganic nanomaterials for enhancing the adhesion of the coating composition to water and sewage conduits to be coated; Dissociating agents provided such that the coating composition does not aggregate; Acrylic resins for imparting flexibility to the coating composition; And fluorine silane for imparting stain resistance to the coating composition.
Coating composition for waterproofing and pollution prevention of water and sewage conduits.
The method of claim 1,
Further comprising an inorganic antibacterial agent for imparting antimicrobial and bactericidal function to the coating composition
Coating composition for waterproofing and pollution prevention of water and sewage conduits.
The method of claim 1,
The alkoxysilane may be methyltrimethoxysilane (CH 3 Si (OCH 3 ) 3 ), tetraethoxysilane (Si (OC 2 H 5 ) 4 ), γ-glycidoxypropyltrimethoxysilane ( γ-Glycydoxypropyltrimethyoxysilane, a mixture of CH 2 OCHCH 2 O (CH 2 ) 3 Si (OCH 3 ) 3 ),
The solvent is a mixture of isopropanol, butanol, methylcellosolve, diacetone alcohol,
The dissociating agent is acetic acid;
The inorganic nanomaterial is a mixture of titanium sol having an average particle size of 15 nm, alumina sol having an average particle size of 53 nm, and silica sol having an average particle size of 15 nm,
The acrylic resin is methyl methacrylate and butyl acrylate
Coating composition for waterproofing and pollution prevention of water and sewage conduits.
The method of claim 2,
The fluorine silane is heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 Si (OCH 3 ) 3 ),
The inorganic antimicrobial agent is a powder obtained by ion-exchanging 6% silver particles in zeolite.
Coating composition for waterproofing and pollution prevention of water and sewage conduits.
The method of claim 2,
When the composition ratio of the coating composition is based on the total weight percent of the coating composition, the alkoxysilane is 30-40%; The solvent comprising isopropanol, butanol, methylcellosolve, diacetone alcohol is 25-35%; 20 to 30% of the inorganic nanomaterial including titanium sol, alumina sol, and silica sol; Acetic acid 1 to 2% of the dissociating agent; 3-4% of the acrylic resin; And 1% to 2% of fluoroalkylsilane which is the fluorine silane; The inorganic antimicrobial agent is 1 to 2%
Coating composition for waterproofing and pollution prevention of water and sewage conduits.
As a method for producing a coating composition for waterproofing and preventing contamination of water and sewage conduits,
Providing an alkoxysilane in which methyltrimethoxysilane, tetraethoxysilane and γ-glycidoxypropyltrimethoxysilane are mixed;
Adding a solvent containing isopropanol, butanol, methylcellosolve, and diacetone alcohol to the alkoxysilane and heating and stirring;
In the heating and stirring process, inorganic nanomaterials of titanium sol having an average particle size of 15 nm, alumina sol having an average particle size of 53 nm, and silica sol having an average particle size of 15 nm are added dropwise;
After the dropping, acetic acid, which is a dissociating agent;
Adding acrylic resin;
Heptadecafluorodecyl trimethoxysilane (CF 3 (CF 2 ) 7 C 2 H 4 (Si (OCH 3 ) 3 )), which is a fluorinesilane, is added;
After adding the fluorine silane, the inorganic antibacterial agent which is a powder obtained by ion-exchanging 6% silver particles to zeolite is added.
Method for producing a coating composition for waterproofing and pollution prevention of water and sewage conduit comprising.
The method according to claim 6,
The heating and stirring step is to stir heating at 45 ℃ 1 hour
Method for producing a coating composition for waterproofing and preventing contamination of water and sewage conduits.
The method according to claim 6,
When the composition ratio of the coating composition is based on the total weight percent of the coating composition, the alkoxysilane is 30-40%; The solvent comprising isopropanol, butanol, methylcellosolve, diacetone alcohol is 25-35%; 20 to 30% of the inorganic nanomaterial including titanium sol, alumina sol, and silica sol; Acetic acid 1 to 2% of the dissociating agent; 3-4% of the acrylic resin; The fluorine silane is 1 to 2%; And the inorganic antimicrobial agent is 1 to 2%
Method for producing a coating composition for waterproofing and preventing contamination of water and sewage conduits.
KR1020120015483A 2012-02-15 2012-02-15 Coating composition of water supply and drain pipe for waterproof and contamination preventation and manufacturing method thereof KR20130094093A (en)

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CN104449141A (en) * 2014-12-04 2015-03-25 海南电力技术研究院 Nano composite cold galvanized coating and preparation method thereof
US20160009927A1 (en) * 2014-07-09 2016-01-14 MTU Aero Engines AG Antifouling layer for compressor blades
CN110114421A (en) * 2016-12-30 2019-08-09 株式会社东进世美肯 Waterproof paint composition and the waterproof coating substrate for being coated with waterproof paint composition
CN111334141A (en) * 2018-12-18 2020-06-26 山西科启科技有限公司 Hydrophilic antibacterial coating for automobile air-conditioning evaporator and preparation method thereof
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160009927A1 (en) * 2014-07-09 2016-01-14 MTU Aero Engines AG Antifouling layer for compressor blades
US9540522B2 (en) * 2014-07-09 2017-01-10 MTU Aero Engines AG Antifouling layer for compressor blades
CN104449141A (en) * 2014-12-04 2015-03-25 海南电力技术研究院 Nano composite cold galvanized coating and preparation method thereof
CN110114421A (en) * 2016-12-30 2019-08-09 株式会社东进世美肯 Waterproof paint composition and the waterproof coating substrate for being coated with waterproof paint composition
CN110114421B (en) * 2016-12-30 2022-06-10 株式会社东进世美肯 Water-repellent coating composition and water-repellent coated substrate coated with the same
CN111334141A (en) * 2018-12-18 2020-06-26 山西科启科技有限公司 Hydrophilic antibacterial coating for automobile air-conditioning evaporator and preparation method thereof
CN111334141B (en) * 2018-12-18 2022-04-01 山西科启科技有限公司 Hydrophilic antibacterial coating for automobile air-conditioning evaporator and preparation method thereof
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