KR100449632B1 - Protective coating against ozone and method of use thereof - Google Patents

Protective coating against ozone and method of use thereof Download PDF

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KR100449632B1
KR100449632B1 KR10-2001-0070198A KR20010070198A KR100449632B1 KR 100449632 B1 KR100449632 B1 KR 100449632B1 KR 20010070198 A KR20010070198 A KR 20010070198A KR 100449632 B1 KR100449632 B1 KR 100449632B1
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ozone
coating
resistant
anticorrosive coating
resistant waterproof
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KR10-2001-0070198A
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Korean (ko)
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KR20030039227A (en
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김창삼
김동웅
이호창
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한국과학기술연구원
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C09D123/08—Copolymers of ethene
    • C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09D123/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins

Abstract

본 발명은 하도와 중도는 에폭시계 수지이고 상도는 일액형 폴리비닐계 수지로 구성된 도료를 오존 발생기가 설치된 정수장 또는 폐수처리장의 콘크리트에 도포함으로써 구조물의 수명연장과 안전성을 향상시키기 위한 내오존성 방수·방식 도료의 제조 및 이의 도포방법에 관한 것이다.The present invention is the ozone-resistant waterproof and to improve the lifespan and safety of the structure by applying the paint composed of one-component polyvinyl-based resin and the upper and the middle is epoxy resin and the top coat is concrete of water purification plant or waste water treatment plant equipped with ozone generator. It relates to the production of anticorrosive paints and to a coating method thereof.

Description

내오존성 방수·방식 도료의 도포방법{PROTECTIVE COATING AGAINST OZONE AND METHOD OF USE THEREOF}Application method of ozone-resistant waterproofing, anticorrosive coating {PROTECTIVE COATING AGAINST OZONE AND METHOD OF USE THEREOF}

본 발명은 오존에 의한 산화 부식에 강한 방수·방식용 에폭시계 도료의 제조방법과 이를 콘크리트 구조물 위에 시공하는 도막방법에 관한 것이다. 보다 상세하게는 오존발생기가 설치된 정수장, 수영장 또는 폐수처리장 등에서 콘크리트로 축조된 오존발생수조 구조물이 오존에 의해 산화되어 부식되는 것을 방지하여 구조물의 수명을 연장하고 안전하게 유지시키기 위한 내오존성 방수·방식 도료의 도포방법에 관한 것이다.The present invention relates to a method for producing a waterproof and corrosion resistant epoxy paint resistant to oxidative corrosion by ozone and a coating method for constructing the same on a concrete structure. More specifically, ozone-resistant water-proof and anti-corrosive paints to prevent the oxidation and corrosion of ozone generating tank structures constructed of concrete in water purification plants, swimming pools, or wastewater treatment plants equipped with ozone generators to prolong the life of the structures and keep them safe. It relates to a coating method of.

상하수도의 탈취나 탈색 및 살균 등의 고도 수 처리, 염색산업에 있어서의 탈색처리, 그리고 식품산업에 있어서의 살균처리 등에 오존이 폭 넓게 사용되고 있다. 오존은 강력한 산화력을 갖기 때문에 상기한 각종 용도에 사용되어 탁월한 효과를 나타낸다. 그러나 한편으로 오존은 콘크리트나 철재 또는 고분자재료 등으로 만들어진 오존처리 시설물을 단기간에 산화, 부식시키기 때문에 오존처리시설물에 대한 내오존성 향상을 위한 대책이 절실히 요구되고 있다.Ozone is widely used for advanced water treatment such as deodorization and decolorization and sterilization of water and sewage, decolorization in the dyeing industry, and sterilization in the food industry. Since ozone has a strong oxidizing power, it is used for the above-mentioned various uses and shows the outstanding effect. On the other hand, since ozone oxidizes and corrodes ozone treatment facilities made of concrete, steel, or polymer materials in a short time, there is an urgent need for measures to improve ozone resistance for ozone treatment facilities.

콘크리트 구조물의 방수성 도료로는 일반적으로 고무아스팔트, 아크릴고무, 아크릴 수지 등과 같이 주성분이 에멀젼형이거나 우레탄이나 에폭시수지가 주성분인 반응형이며, 주로 고무아스팔트계와 우레탄계의 고분자로 구성된 도료가 사용되고 있다. 또한 이들 방수제의 내산화성과 방식성을 향상시키기 위해서 여러 가지 방법이 제안되고 있다. 예컨대, 대한민국 공개번호 86-414은 방식재 조성물에 관한것으로 우레탄 변성에폭시 수지를 함유하는 에폭시수지에 수난용성 폴리아민이나 폴리아미드 또는 폴리메르캅탄 중에서 선택되는 적어도 1가지 이상을 첨가하는 것을 특징으로 하고 있다. 또한 고분자 도료의 방식성을 향상시키기 위하여 금속산화물을 혼합하는 방법도 있다. 예를 들면, 대한민국 공개번호 특2000-0036871은 에폭시 수지에 천연옥을 분쇄하여 얻은 세라믹 항균제를 에폭시 수지에 혼합한 후 천연착색원료를 혼합하여 인체에 무해한 수용성 에폭시 도료에 관한 것이며, 대한민국 공개번호 89-5234는 에폭시 수지 용액에 산화 알루미늄(Al2O3), 산화토륨(ThO2), 산화지르코늄(ZrO2), 산화세륨(Ce2O3), 산화주석(SnO2)을 첨가한 방식도료에 관한 것이다. 상기한 공지자료들은 내산화성과 방식성 도료에 관한 것으로 고농도 오존 분위기에서의 내저항성에 대해서는 전혀 언급하고 있지 않다.As waterproof paints for concrete structures, rubber-based asphalts, acrylic rubbers, acrylic resins, and the like are usually emulsion-type or reactive types, mainly composed of urethane or epoxy resins. In addition, various methods have been proposed to improve the oxidation resistance and corrosion resistance of these waterproofing agents. For example, the Republic of Korea Publication No. 86-414 relates to the anticorrosive material composition, characterized in that the addition of at least one selected from a poorly water-soluble polyamine, polyamide or polymercaptan to an epoxy resin containing a urethane-modified epoxy resin. . There is also a method of mixing a metal oxide in order to improve the corrosion resistance of the polymer coating. For example, Korean Laid-Open Publication No. 2000-0036871 relates to a water-soluble epoxy paint which is harmless to the human body by mixing a natural antimicrobial agent obtained by pulverizing natural jade in an epoxy resin into an epoxy resin, followed by mixing a natural coloring material. 5234 is an anticorrosive paint in which aluminum oxide (Al 2 O 3 ), thorium oxide (ThO 2 ), zirconium oxide (ZrO 2 ), cerium oxide (Ce 2 O 3 ), and tin oxide (SnO 2 ) are added to an epoxy resin solution. It is about. The above-mentioned publications refer to oxidation resistance and anticorrosive coatings and do not mention resistance to resistance in a high concentration ozone atmosphere.

오존은 고분자에 대해서 오존화를 거쳐 산화반응을 한다. 이중결합이 없는 내 산화성의 고분자 재료일지라도 고농도의 오존과 반응하면 확연하게 노화작용을 볼 수 있는데 이는 오존의 강력한 산화작용 때문이다. 자연상태에서 대기중에 존재하는 오존은 일반적으로 수 ∼ 수십 pphm(parts per hundred milions)이며 이렇게 오존농도가 희박한 경우에는 고분자의 산화속도가 매우 느리기 때문에 육안으로 인식할 수 있을 정도의 노화가 발생하지 않는다. 자연상태의 오존농도보다는 높지만 세계적으로 대부분의 국가가 허용하고 있는 대기중의 오존농도는 0.1 ppm으로 일반 생활시설에서 오존에 의한 심각한 산화나 부식 문제를 발생하지 않는다. 그러나 정수장의 고도정수처리나 폐수처리장의 오존처리시설에 사용되는 오존농도는 5000ppm 이상으로 매우 높기 때문에 오존에 의한 산화가 매우 강하여 오존과 직접 접촉하는 방수·방식 도료에 대한 내오존 처리는 대단히 중요하다.Ozone undergoes an oxidation reaction through ozonation of the polymer. Even if the oxidation resistant polymer material without double bonds reacts with high concentrations of ozone, aging can be seen clearly because of the strong oxidation of ozone. Ozone in the air in nature is generally several parts to hundreds of pphm (parts per hundred milions), and when the ozone concentration is low, the oxidation rate of the polymer is very slow. Therefore, aging does not occur with visual recognition. . Higher than the natural ozone concentration, but the allowable ozone concentration in the world is 0.1 ppm, which does not cause serious oxidation or corrosion problems caused by ozone in general living facilities. However, the ozone concentration used in the advanced water treatment plant of the water treatment plant or the ozone treatment plant of the wastewater treatment plant is very high, which is 5000 ppm or more. .

기존의 콘크리트용 방수·방식 도료는 오존 농도가 5000 ppm 이상에 달하는 고도정수처리나 폐수처리시설에서 사용될 목적으로 개발하지 않았으므로 고농도의 오존 하에서는 사용하기가 어렵다. 또한 고농도 오존에 견딜 수 있는 방수·방식 도료의 시공방법에 대한 기준도 아직 확립되어 있지 않다.Conventional waterproofing and anticorrosive paints for concrete are difficult to use under high ozone concentrations because they have not been developed for use in advanced water treatment or wastewater treatment facilities with ozone concentrations above 5000 ppm. In addition, standards for the construction of waterproofing and anticorrosive coatings that can withstand high concentrations of ozone have not yet been established.

본 발명은 고도정수처리시설이나 폐수처리시설과 같이 5000 ppm 이상의 고농도 오존을 사용하는 시설에 사용할 수 있는 콘크리트용 방수·방식 도료를 제공하는데 그 목적이 있으며, 또 한편으로 상기 내오존성 방수·방식 도료를 콘크리트 구조물에 시공하는 도포방법을 제공하고자 하는 것이다.An object of the present invention is to provide a waterproofing and anticorrosive paint for concrete that can be used in a facility using high concentration ozone of 5000 ppm or more, such as an advanced water treatment plant or a wastewater treatment plant. To provide a coating method for constructing a concrete structure.

본 발명의 다른 목적 및 장점은 이하의 본 발명의 상세한 설명으로부터 명백해질 것이다.Other objects and advantages of the present invention will become apparent from the following detailed description of the invention.

본 발명에 의한 내오존성 방수·방식 도료의 도포구조를 모식적으로 나타낸 단면도.Sectional drawing which showed typically the coating structure of ozone-resistant waterproof anticorrosive coating by this invention.

본 발명의 내오존성 방수·방식제는 콘크리트에 도포되어 콘크리트와의 접착력을 향상시키고 표면을 균질하게 하는 에폭시계 하도(프라이머)와 하도 위에 바탕조정제로 도포되는 무용제형 에폭시계의 중도, 그리고 내오존성이 강한 일액형 폴리비닐계의 상도로 구성된다.The ozone-resistant waterproofing and anticorrosive of the present invention is applied to concrete to improve adhesion to concrete and homogenizes the surface of the epoxy-based primer (primer) and the middle and non-solvent-resistant epoxy-based epoxy-based epoxy coating agent applied on the substrate. It is composed of a strong one-component polyvinyl based phase.

본 발명에 따른 하도는 무용제형 에폭시계의 폴리에폭시화합물과 아미노화합물로 구성되며, 저온에서의 경화속도가 빠르면서 콘크리트 몰탈 면에 충분히 스며들 수 있는 낮은 점도를 갖는 것을 특징으로 한다.The undercoat according to the present invention is composed of a solvent-free epoxy-based polyepoxy compound and an amino compound, and has a low viscosity that can sufficiently penetrate the concrete mortar surface at a low curing speed at a low temperature.

본 발명에 따른 중도는 바탕조정제로 면을 고르게 하면서 하도 및 상도와의 접착성 및 상용성이 우수한 무용제형 에폭시계이다. 중도에는 점토, 카본 블랙, 알루미나, 글라스비드 또는 글라스화이버 등을 충전제로 하여 5 ∼ 30 부피％를 단독 또는 복수 첨가하여 내산화성, 내식성 및 기계적 강도를 증진시키고 하도 및 상도와의 접착성 및 상용성을 향상시킨 것이 특징이다.Midway according to the present invention is a solvent-free epoxy-based epoxy having excellent adhesiveness and compatibility with the bottom and top, while evening the surface as a background adjuster. In the middle, clay, carbon black, alumina, glass beads or glass fiber, etc., as filler, 5-30% by volume, alone or in a plurality, are added to enhance oxidation resistance, corrosion resistance and mechanical strength, and adhesion and compatibility with the upper and upper layers. It is characterized by improved.

본 발명에 따른 상도는 폴리비닐계 수지로서 오존에 강한 고분자 수지에 가소제, 안료, 안정제 및 기타 충전제와 신너 등으로 조성된 특수 도료이다. 특별히 하도와 중도의 에폭시계 수지와의 접착성 및 상용성이 뛰어나 오존에 의한 산화 및 부식에 우수한 것이 특징이다.Top coat according to the present invention is a polyvinyl-based resin is a special paint composed of a plasticizer, a pigment, a stabilizer and other fillers and thinners in ozone-resistant polymer resin. In particular, it has excellent adhesion and compatibility with the epoxy resin of the middle and the middle, and is excellent in oxidation and corrosion by ozone.

보다 구체적으로 설명하자면, 본 발명에 따른 하도의 폴리에폭시화합물은 분자중에 2개 이상 에폭시기를 가지고 있으며, 에폭시기 1개 당의 분자량이 100 ∼ 800 이다. 일반적으로 에폭시기 1개 당의 분자량이 1000 이하이면 가교구조가 느슨하지 않아 경화물의 내수성, 내식성, 기계적 강도 등의 물성이 우수하다. 한편, 에폭시기 1개 당의 분자량이 100 이상이어야 경화물의 내수성, 내식성 및 기계적 강도가 우수한 가교구조가 된다. 또한 아미노화합물은 분자 중에 아미노기가 갖는 활성수소를 2개 이상 포함하고 있는 것으로 활성수소 1개 당의 분자량이 20 ∼ 300 이다. 활성수소 1개당 분자량이 400 이상이면 가교구조가 느슨해지는 경향이 나타나며, 또한 20 이하인 경우도 경화후의 접착성, 내구성, 내식성이 떨어지는 경향을 나타낸다.More specifically, the polyepoxy compound of the undercoat according to the present invention has two or more epoxy groups in the molecule, and has a molecular weight of 100 to 800 per one epoxy group. Generally, when the molecular weight per epoxy group is 1000 or less, the crosslinked structure is not loose and excellent in physical properties such as water resistance, corrosion resistance and mechanical strength of the cured product. On the other hand, when the molecular weight per one epoxy group is 100 or more, it becomes a crosslinked structure excellent in the water resistance, corrosion resistance, and mechanical strength of the cured product. Moreover, an amino compound contains two or more active hydrogens which an amino group has in a molecule | numerator, and the molecular weight per active hydrogen is 20-300. If the molecular weight per active hydrogen is 400 or more, the crosslinked structure tends to be loose, and even if it is 20 or less, the adhesiveness, durability, and corrosion resistance after curing are inferior.

고분자계 수지에 무기물 입자를 충전제로서 첨가하는 이유는 강화나 증량의목적으로 첨가하는 경우와 충전제 자신이 갖는 기능을 발휘하기 위한 목적으로 크게 구분된다. 본 발명에 따른 중도에서 충전제를 첨가하는 이유는 중도의 기계적 강화를 위한 것이 아니라 하도와 상도와의 화학적 상용성을 향상시켜 중도 자신의 내산화성, 내식성 향상과 하도, 중도 그리고 상도로 이루어진 총체적인 방수·방식 도료 구조의 내오존성을 향상시키기 위함이다. 첨가된 충전제의 종류, 입경, 입자 형상 및 양에 따라서 방수·방식 도막 구조의 내오존성에는 차이가 있으나 콘크리트에의 접착강도에는 차이가 없었다. 내오존성에 큰 영향을 미치는 것은 충전제의 종류보다는 충전제의 입경, 모양과 첨가량이다. 가장 내오존성이 향상되는 바람직한 충전제의 평균 입경은 1 ∼ 5 ㎛ 이며, 이 보다 작은 경우는 입자들이 응집에 의한 결함과 기공의 발생으로 오히려 내오존성이 감소하였다. 한편 평균 입경이 5 ㎛ 보다 큰 경우는 내오존성에 영향을 거의 주지 않았으나 접착력이 떨어지는 경향을 나타내었다. 충전제의 입자 모양은 모나지 않은 구형 입자가 가장 내오존성을 향상시켰으며, 각이 진 입자 또는 중공 입자는 경우에 따라서 내오존성을 감소시키는 경우도 있었다. 이는 충전제와 에폭시 수지의 계면에 존재하는 기공, 균열 등의 결함과 에폭시 수지가 경화하면서 잔류응력이 계면 및 에폭시 수지 내에 축적되기 때문인 것으로 생각된다. 충전제의 첨가량은 충전제 상태에 따라서 차이는 있으나 5 ∼ 30 부피％에서 가장 내오존성이 우수하였으며, 충전제의 평균 입경이 작은 경우는 첨가량이 적은 쪽이, 평균 입경이 큰 경우는 첨가량이 많은 쪽이 효과적이었다.The reason why the inorganic particles are added to the polymer-based resin as a filler is largely divided into the case of adding for the purpose of strengthening or increasing the amount and the purpose of showing the function of the filler itself. The reason why the filler is added in the middle of the present invention is not for the mechanical reinforcement of the intermediate but improves the chemical compatibility between the upper and the upper, and thus improves the oxidation resistance, the corrosion resistance, and the overall waterproof and the upper and the middle. This is to improve the ozone resistance of the anticorrosive coating structure. The ozone resistance of the waterproof and anticorrosive coating structure was different according to the type, particle size, particle shape and amount of the added filler, but there was no difference in adhesive strength to concrete. The biggest influence on ozone resistance is the particle size, shape and amount of filler rather than the type of filler. The average particle diameter of the preferred filler having the most improved ozone resistance is 1 to 5 µm, and in the smaller case, the ozone resistance is reduced due to the generation of defects and pores caused by the aggregation. On the other hand, when the average particle diameter was larger than 5 μm, it had little effect on ozone resistance, but showed a tendency of inferior adhesion. The particle shape of the filler was the most uneven spherical particles improved the ozone resistance, while the angled or hollow particles in some cases reduced the ozone resistance. This is considered to be because defects such as pores and cracks present at the interface between the filler and the epoxy resin and residual stress accumulate in the interface and the epoxy resin as the epoxy resin cures. The amount of filler added varies depending on the state of the filler, but the ozone resistance is the best at 5 to 30% by volume. The smaller the average particle size, the smaller the added amount, and the larger the average particle size, the more added the effective amount. It was.

본 발명에서 상도의 1차 혼합용액을 제조하기 위한 원료인 폴리비닐계 중합체로는 에틸렌비닐아세테이트 중합체, 부틸아크릴레이트 비닐아세테이트 공중합체 등이며 이들 중합체는 2중 결합이 없고, 곁가지가 적은 내식성, 내화학성이 강한 고분자 중합체로서 내마모성을 고려하여 이에 적합한 공지의 노화방지제 0.5 ∼ 1.5 부피%와 공지의 안정제 0.5 ∼ 1.5 부피%를 첨가하여 작업성이 우수한 일액형 수지로 안정화시켰다.In the present invention, the polyvinyl polymer, which is a raw material for preparing the primary mixed solution of the top coat, is an ethylene vinyl acetate polymer, a butyl acrylate vinyl acetate copolymer, and the like, and these polymers do not have a double bond and have little side branches. In consideration of abrasion resistance, 0.5-1.5% by volume of a known anti-aging agent and 0.5-1.5% by volume of a known stabilizer were added to stabilize the one-component resin having excellent workability.

상기 하도, 중도 및 상도 도료에 의해서 구성되는 내오존성 방수·방식 도막은 도1에서와 같이 콘크리트 시설물에 하도의 도포 두께를 0.2 ∼ 0.8 ㎜로서 1회, 중도의 도포 두께를 0.2 ∼ 0.8 ㎜로서 1회 그리고 상도의 도포 두께를 0.1 ∼ 0.3 ㎜로서 1 ∼ 2회 도포한다.The ozone-resistant waterproofing and anticorrosive coating film composed of the above-mentioned undercoat, midway and topcoat paints has one coat thickness of 0.2 to 0.8 mm and one coat of 0.2 to 0.8 mm of intermediate coating thickness in concrete facilities as shown in FIG. The coating thickness of the upper coat and the upper coat is applied once or twice as 0.1 to 0.3 mm.

이하, 실시 예를 통해서 본 발명을 보다 구체적으로 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.

실시예 1.Example 1.

무용제형 폴리에폭시계 주제와 경화제의 내용물을 부피를 기준으로 4 : 1의 비율로 용기에 붓고, 회전드릴로 10분 혼합 후, KS L 5207(내화물용 알루미나 시멘트의 물리 시험 방법)의 11.3에 규정하는 방법으로 조제한 크기가 70 × 70 × 20 ㎜ 의 몰탈 판의 한 면에 붓으로 충분히 스며들도록 하도를 도포하였다. 하도 도포 후 하도가 충분히 건조되도록 3일간 공기가 잘 통하는 그늘에서 방치하여 경화시켰다. 하도가 충분히 건조한 후에 역시 무용제형 에폭시계 주제와 경화제를 부피를 기준으로 1 : 1의 비율로 용기에 붓고, 회전드릴로 5분 혼합 후 하도 위에 중도를 도포하였다. 중도를 도포한 후 역시 공기가 잘 통하는 그늘에서 3일간 방치하여 중도를 경화시켰다. 중도가 완전히 경화된 후 내오존성에 강한 폴리비닐계 일액형 상도를 역시 붓으로 2회 도포하였다. 상도를 도포한 후 역시 바람이 잘 통하는 그늘에서 3일간 경화시켜 내오존 평가용 시편을 제조하였다. 제조한 시편을 오존농도 45 ㎎/ℓ, 오존량 7.5 gm/hr의 오존을 발생시키는 오존반응수조에 놓고 10일간 폭로(산화)시켰다. 산화된 시편의 색상변화 및 반응 정도를 확인하고, KS F 4921-99 (콘크리트용 에폭시 수지계 방수·방식 도료)에 준하여 부착강도를 측정하였다. 그 결과 상기한 것과 같은 구성을 갖는 내오존성 도막은 변색이 일어나지 않았고 도막 표면의 광택만이 약간 감소하였다. 부착강도는 16 kgf/㎠로서 내오존 시험 전에 비하여 20％ 정도 감소하였다.The solvent-free polyepoxy watch main body and the contents of the curing agent are poured into the container at a ratio of 4: 1 based on the volume, mixed for 10 minutes with a rotary drill, and prescribed in 11.3 of KS L 5207 (Physical Test Method for Refractory Alumina Cement). The undercoat was apply | coated so that one side of the mortar board of the magnitude | size prepared by the method of 70 * 70 * 20mm could fully penetrate with a brush. After the coating was applied, the coating was allowed to dry for 3 days in a well-ventilated shade to cure sufficiently. After the dryness was sufficiently dry, the solvent-free epoxy-based main body and the curing agent were poured into the container at a ratio of 1: 1, based on the volume, and mixed with a rotary drill for 5 minutes, and then the intermediate was applied on the lower road. After applying the intermediate, it was also left for 3 days in a well-ventilated shade to cure the intermediate. After the degree of curing was completely cured, a polyvinyl-based one-part top coat resistant to ozone resistance was also applied twice with a brush. After coating the top coat was also cured in a well-ventilated shade for 3 days to prepare a specimen for ozone resistance. The prepared specimen was placed in an ozone reaction tank that generates ozone with an ozone concentration of 45 mg / l and an amount of ozone of 7.5 gm / hr, and exposed (oxidized) for 10 days. The color change and the degree of reaction of the oxidized specimens were confirmed, and the adhesion strength was measured according to KS F 4921-99 (epoxy resin-based waterproof and anticorrosive paint for concrete). As a result, the ozone resistant coating film having the above structure did not discolor and only the glossiness of the coating film surface was slightly decreased. The adhesion strength was 16 kgf / cm 2, which was reduced by 20% compared to before the ozone test.

실시예 2.Example 2.

중도에 글라스비드를 5 부피％ 첨가한 것 외의 다른 사항은 실시 예 1과 동일하였다. 내오존 시험 결과 상기한 것과 같은 구성을 갖는 내오존성 도막은 변색이 일어나지 않았고 도막 표면의 광택이 다소 감소하였다. 부착강도는 17 kgf/㎠로서 실시 예 1보다 다소 높았다.Other matters except the addition of 5% by volume of glass beads were the same as in Example 1. As a result of the ozone resistance test, the ozone resistant coating film having the above-described configuration did not discolor and the glossiness of the coating film surface was slightly decreased. Adhesion strength was 17 kgf / cm 2, somewhat higher than Example 1.

실시예 3.Example 3.

중도에 평균 입경이 5 ㎛ 인 점토를 10 부피％ 첨가한 것 외의 다른 사항은 실시 예 1과 동일하였다. 내오존 시험 결과 상기한 것과 같은 구성을 갖는 내오존성 도막은 변색은 일어나지 않았고 도막 표면의 광택이 약간 감소하였다. 부착강도는 17 kgf/㎠로서 실시 예 2와 차이가 없었다.The other matters except the addition of 10% by volume of clay having an average particle diameter of 5 µm in the middle were the same as in Example 1. As a result of the ozone resistance test, the ozone resistant coating film having the above-described configuration did not cause discoloration and the glossiness of the surface of the coating film was slightly decreased. The adhesion strength was 17 kgf / cm 2, which was not different from Example 2.

실시예 4.Example 4.

중도에 평균 입경이 5 ㎛ 인 점토를 20 부피％ 첨가한 것 외의 다른 사항은실시 예 1과 동일하였다. 내오존시험 결과 상기한 것과 같은 구성을 갖는 내오존성 도막은 변색은 일어나지 않았고 도막 표면의 광택이 약간 감소하였다. 부착강도는 18 kgf/㎠로서 실시 예 3보다 다소 높았다.Intermediate matters other than the addition of 20% by volume of clay having an average particle diameter of 5 µm were the same as in Example 1. As a result of the ozone resistance test, the ozone resistant coating film having the same structure as described above did not cause discoloration and the glossiness of the surface of the coating film was slightly decreased. Adhesion strength was 18 kgf / cm 2, somewhat higher than Example 3.

실시 예 5.Example 5.

중도에 평균 입경이 5 ㎛인 점토를 30 부피％ 첨가한 것 외의 다른 사항은 실시 예 1과 동일하였다. 내오존성 도막은 변색은 일어나지 않았고 도막표면의 광택이 약간 감소하였다. 부착강도는 16 kgf/㎠로 감소하였다.The other matters except the addition of 30% by volume of clay having an average particle diameter of 5 µm in the middle were the same as in Example 1. The ozone resistant coating did not discolor and the glossiness of the coating surface was slightly decreased. Adhesion strength decreased to 16 kgf / cm 2.

실시 예 6.Example 6.

중도에 평균 입경이 1 ㎛ 인 알루미나 분말을 10 부피％ 첨가한 것 외의 다른 사항은 실시 예 1과 동일하였다. 내오존시험 결과 상기한 것과 같은 구성을 갖는 내오존성 도막은 변색은 일어나지 않았고 도막 표면의 광택이 다소 감소하였다. 부착강도는 12 kgf/㎠로 낮았다.Intermediate matters were the same as in Example 1 except that 10% by volume of alumina powder having an average particle diameter of 1 µm was added. As a result of the ozone resistance test, the ozone resistant coating film having the above-described structure did not discolor and glossiness of the surface of the coating film was slightly decreased. The adhesive strength was as low as 12 kgf / cm 2.

본 발명은 오존농도 수천 ppm 이상의 고농도에서 콘크리트의 방수·방식재로 사용할 수 있는 도료의 제조방법과 그의 도포방법을 제공함으로써 고도의 정수처리시설이나 오폐수처리시설에 이용되는 오존반응조의 수명과 안전성 향상에 기여할 수 있다.The present invention improves the life and safety of ozone reaction tanks used in high water purification facilities and wastewater treatment facilities by providing a coating method and a coating method thereof that can be used as waterproofing and anticorrosive materials for concrete at high concentrations of thousands of ppm or more. Can contribute to

Claims (10)

폴리에폭시수지와 공지 경화제가 4:1 부피％ 비율로 공지방법으로 혼합된 용액을 콘크리트에 도포하여 상온에서 72시간 건조시킨 하도와 상기 하도에 폴리에폭시수지와 충전제가 1:1 부피％ 비율로 공지방법으로 혼합된 용액을 도포하여 상온에서 72시간 건조시킨 중도 그리고 상기 중도에 일액형 폴리비닐계 수지를 도포하여 상온에서 72시간 건조시킨 상도로 구성된 것이 특징인 내오존성 방수·방식 도료의 도포방법.The polyepoxy resin and fillers were applied at a ratio of 4: 1% by volume in a known manner, and the mixture was applied to concrete and dried at room temperature for 72 hours. A method of applying an ozone-resistant waterproofing and anticorrosive coating, comprising a method of coating a mixed solution by a method and drying at room temperature for 72 hours, and applying the one-component polyvinyl resin to the middle and drying at room temperature for 72 hours. 제 1 항에 있어서, 하도에 사용하는 폴리에폭시 수지가 에폭시기 1개 당 분자량 100∼800인 무용제형 폴리에폭시 수지를 사용하는 것이 특징인 내오존성 방수·방식 도료의 도포방법.The method for applying an ozone-resistant waterproofing and anticorrosive coating according to claim 1, wherein the polyepoxy resin used in the undercoat is a solvent-free polyepoxy resin having a molecular weight of 100 to 800 per epoxy group. 제 1 항에 있어서, 중도에 사용하는 폴리에폭시 수지가 에폭시기 1개 당 분자량 100∼800인 무용제형 폴리에폭시 수지와 상기 수지에 대하여 평균 입경 1∼5 ㎛의 충전제 5∼30 부피%를 혼합시킨 것이 특징인 내오존성 방수·방식 도료의 제조방법.The method of claim 1, wherein the polyepoxy resin used in the middle is a solvent-free polyepoxy resin having a molecular weight of 100 to 800 per epoxy group and 5 to 30% by volume of a filler having an average particle diameter of 1 to 5 µm with respect to the resin. A method for producing an ozone-resistant waterproof anticorrosive coating. 제 3 항에 있어서, 충전제가 점토, 카본 블랙, 알루미나, 글라스비드, 글라스화이브 중에서 한가지 이상 혼합시킨 것이 특징인 내오존성 방수·방식 도료의 도포방법.4. A method for applying an ozone-resistant waterproof anticorrosive coating according to claim 3, wherein the filler is mixed with at least one of clay, carbon black, alumina, glass beads, and glass fives. 제 1 항에 있어서, 상도가 폴리비닐계 수지와 공지의 노화방지제 0.5 ∼ 1.5 부피% 및 공지의 안정제 0.5 ∼ 1.5 부피%를 혼합시킨 것이 특징인 내오존성 방수·방식 도료의 도포방법.The coating method according to claim 1, wherein the top coat is a mixture of polyvinyl resin, 0.5 to 1.5% by volume of a known anti-aging agent, and 0.5 to 1.5% by volume of a known stabilizer. 제 1 항에 있어서, 폴리비닐계 수지가 에틸렌비닐아세테이트 중합체 또는 부틸아크릴레이트 비닐아세테이트 공중합체를 사용하는 것이 특징인 내오존성 방수·방식 도료의 제조방법.The method for producing an ozone-resistant waterproof anticorrosive coating according to claim 1, wherein the polyvinyl resin is an ethylene vinyl acetate polymer or a butyl acrylate vinyl acetate copolymer. 제 1 항에 있어서, 하도의 도막 두께가 0.2∼0.8㎜인 것이 특징인 내오존성 방수·방식 도료의 도포방법.The coating method of the ozone-resistant waterproof anticorrosive coating according to claim 1, wherein the coating thickness of the undercoat is 0.2 to 0.8 mm. 제 1 항에 있어서, 중도의 도막 두께가 0.2∼0.8㎜인 것이 특징인 내오존성 방수·방식 도료의 도포방법.The coating method of the ozone-resistant waterproof anticorrosive coating according to claim 1, wherein the intermediate coating thickness is 0.2 to 0.8 mm. 제 1 항에 있어서, 상도의 도막 두께가 0.1∼0.3㎜인 것이 특징인 내오존성 방수·방식 도료의 도포방법.The coating method of the ozone-resistant waterproof anticorrosive coating according to claim 1, wherein the coating film thickness of the top coat is 0.1 to 0.3 mm. 제 7 항에 있어서, 상도의 도막 두께가 0.1 ∼ 0.3 mm인 것이 특징인 내오존성 방수·방식 도료의 도포방법.The coating method of the ozone-resistant waterproof anticorrosive coating according to claim 7, wherein the coating film thickness of the top coat is 0.1 to 0.3 mm.
KR10-2001-0070198A 2001-11-12 2001-11-12 Protective coating against ozone and method of use thereof KR100449632B1 (en)

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Publication number Priority date Publication date Assignee Title
KR102275153B1 (en) * 2021-02-10 2021-07-08 주식회사 세기엔지니어링 A Composition of Hear-Resisting and Fireproof Paint and Coating Method Thereof

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JPH05186710A (en) * 1992-01-14 1993-07-27 Kubota Corp Ductile pipe excellent in ozone resistance
JPH0957192A (en) * 1995-08-23 1997-03-04 Kansai Paint Co Ltd Anti-corrosive coating method using one-liquid type paint
JPH11616A (en) * 1997-06-10 1999-01-06 Dainippon Toryo Co Ltd Method for forming anticorrosive coat
KR20020087242A (en) * 2001-05-15 2002-11-22 중앙방수기업주식회사 Coating for waterproofing mainly consisting of styrene butadien styrene resin mixed with ceramic and manufacturing method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05186710A (en) * 1992-01-14 1993-07-27 Kubota Corp Ductile pipe excellent in ozone resistance
JPH0957192A (en) * 1995-08-23 1997-03-04 Kansai Paint Co Ltd Anti-corrosive coating method using one-liquid type paint
JPH11616A (en) * 1997-06-10 1999-01-06 Dainippon Toryo Co Ltd Method for forming anticorrosive coat
KR20020087242A (en) * 2001-05-15 2002-11-22 중앙방수기업주식회사 Coating for waterproofing mainly consisting of styrene butadien styrene resin mixed with ceramic and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102275153B1 (en) * 2021-02-10 2021-07-08 주식회사 세기엔지니어링 A Composition of Hear-Resisting and Fireproof Paint and Coating Method Thereof

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