KR20080105845A - Waterproof agent for elastic membrane and preparing method thereof - Google Patents
Waterproof agent for elastic membrane and preparing method thereof Download PDFInfo
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- KR20080105845A KR20080105845A KR1020070053944A KR20070053944A KR20080105845A KR 20080105845 A KR20080105845 A KR 20080105845A KR 1020070053944 A KR1020070053944 A KR 1020070053944A KR 20070053944 A KR20070053944 A KR 20070053944A KR 20080105845 A KR20080105845 A KR 20080105845A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
- C04B2111/00801—Membranes; Diaphragms
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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Abstract
Description
본 발명은 탄성 도막 방수제 및 그 제조방법에 관한 것으로, 더욱 상세하게는 물의 침투를 막는 방수기능을 갖고 있고 건축물 및 토목 구조물 구조 재료의 부식과 크랙에 대한 저항성을 갖고 있을 뿐만 아니라 시멘트 혼합계로 동계에 시공이 가능한 탄성 도막 방수제 및 그 제조 방법에 관한 것이다.The present invention relates to an elastic coating waterproofing agent and a method of manufacturing the same, and more particularly, to have a waterproof function to prevent the penetration of water, and to resist corrosion and cracks of building and civil structural structural materials, as well as to the winter in a cement mixture system It is related with the elastic coating film waterproofing agent which can be constructed, and its manufacturing method.
도막 방수제는 고무 아스팔트, 아크릴 고무, 아크릴 수지 등이 주성분인 에멀젼형과, 클로로프렌이나 클로로설폰화폴리에틸렌이 함유된 용액형 우레탄이나 에폭시수지가 주성분인 반응형으로 나눌 수 있다. 이들 중 고무 아스팔트계와 우레탄계 방수제가 주로 많이 사용되고 있다.Coating waterproofing agents can be classified into an emulsion type mainly composed of rubber asphalt, acrylic rubber, acrylic resin, etc., and a reactive type mainly composed of a solution type urethane or epoxy resin containing chloroprene or chlorosulfonated polyethylene. Among them, rubber asphalt and urethane waterproofing agents are mainly used.
고무 아스팔트계 방수제는 아스팔트에 합성고무와 각종 수지를 혼합하여 고분자의 열가소성 성질을 이용하여 급격히 경화시키는 열공법과, 합성 라텍스에 아스팔트를 유화시킨 후 수분의 증발에 의해 자연경화시키는 냉공법에 의해 제조되며, 보통 아스팔트에는 스티렌 계통의 중합체, 어탁틱(atatic) 폴리프로필렌, 스티렌-부타디엔 라텍스 등이 혼합 사용되고 있다.The rubber asphalt waterproofing agent is manufactured by the method of mixing the rubber and various resins in the asphalt and rapidly curing it by using the thermoplastic properties of the polymer, and the method of cooling by emulsifying the asphalt in synthetic latex and then natural curing by evaporation of moisture. In general, asphalt is mixed with a styrene polymer, atactic polypropylene, styrene-butadiene latex and the like.
또한 스티렌 계통의 중합체를 사용하지 않고 스티렌 모노머와 아스팔트를 혼합한 후 촉매하에 중합반응시켜 스티렌화율이 10-30%인 폴리스티렌화 아스팔트 도막방수제를 제조하는 방법이 알려져 있다.In addition, a method of preparing a polystyrene-based asphalt coating waterproofing agent having a styrene rate of 10-30% by polymerization under a catalyst after mixing a styrene monomer and asphalt without using a styrene-based polymer is known.
한편 우레탄계 도막방수제는 용제형 우레탄계가 흔히 사용되며, 최근에는 환경 공해나 독성에 대한 작업 안전성을 고려하여 폴리우레탄 에멀젼, 폴리우레탄 콜로이드 분산체, 폴리우레탄 수용액 등의 성상으로 수용성 우레탄계 방수제를 개발하여 사용하고 있다. 그러나 이들 방수제는 내구성을 비롯한 모든 물성면에서는 기존 용제형 우레탄계 방수제 보다 미흡한 점이 많이 있다.On the other hand, the urethane-based waterproofing agent is commonly used as a solvent-based urethane type, recently developed water-soluble urethane-based waterproofing agent in the form of polyurethane emulsion, polyurethane colloidal dispersion, polyurethane aqueous solution in consideration of working safety against environmental pollution or toxicity. Doing. However, these waterproofing agents are inferior to conventional solvent-type urethane-based waterproofing agents in terms of all properties including durability.
상술한 도막방수제는 건축물과 토목 구조물 등에서의 누수를 방지코자 하는 방수제로서의 기본 기능 이외에, 최근 방수제로서 요구되고 있는 건축물 및 토목 구조물의 부식과 잡초 및 해충의 서식 방지, 건물 옥상에는 화단 조성이나 수목 식재가 가능토록 하는 미장성, 및 급격한 외부온도의 변화에 의해 발생하는 크랙에 대한 저항성 등이 만족할만한 수준에 도달하지 못하여 개선의 여지가 많다. 특히 종래 고무아스팔트 방수제의 경우에도 고무 성분이 적어 건축물의 균열을 방지하는 기능이 현저하게 저하된다는 문제점이 있다.In addition to the basic function as a waterproofing agent to prevent water leakage in buildings and civil structures, the above-mentioned coating film waterproofing agent prevents corrosion of buildings and civil structures that are recently required as waterproofing agents, prevents weeds and pests from being formed, and forms flower beds or planted trees on the roof of buildings. There is a lot of room for improvement since the plastering and the resistance to cracking caused by the sudden change in external temperature do not reach a satisfactory level. In particular, even in the case of the conventional rubber asphalt waterproofing agent, there is a problem that the function of preventing the crack of the building is significantly reduced due to less rubber components.
본 발명이 이루고자 하는 기술적 과제는 상술한 문제점을 해결하여 기본적인 방수기능이 개선될 뿐만 아니라 건축물 및 토목 구조물 구조 재료의 부식과 크랙에 대한 저항성을 가지면서 동계에도 시공이 가능한 탄성 도막 방수제 및 그 제조 방법을 제공하는 것이다.The technical problem to be solved by the present invention is to solve the above problems and improve the basic waterproof function, as well as resistance to corrosion and cracks of building and civil structural structural materials, and can be installed in winter, the elastic coating film waterproofing and its manufacturing method To provide.
상기 기술적 과제를 이루기 위하여, 본 발명에서는 수성 폴리우레탄 및 (메타)아크릴계 수지를 포함하는 우레탄 아크릴 하이브리드 수분산체; 및 In order to achieve the above technical problem, in the present invention, an urethane acrylic hybrid water dispersion comprising an aqueous polyurethane and a (meth) acrylic resin; And
알루미나 시멘트, 탄산칼슘, 실리카, 에틸렌 비닐 아세테이트 수지 및 (메타)아크릴계 공중합체를 포함하는 알루미나 시멘트 복합체를 함유하는 탄성 도막 방수제를 제공한다.An elastic coating film waterproofing agent containing an alumina cement composite including alumina cement, calcium carbonate, silica, ethylene vinyl acetate resin, and (meth) acrylic copolymer is provided.
본 발명의 다른 기술적 과제는 수성 폴리우레탄 60-80 중량부에 (메타)아크릴계 수지 형성용 모노머인 메틸메타크릴레이트 20-30 중량부, 에틸아세테이트 10-20 중량부 및 아크릴산 5-10 중량부를 부가 및 혼합하는 단계;Another technical problem of the present invention is to add 60-30 parts by weight of methyl methacrylate, 10-20 parts by weight of ethyl acetate and 5-10 parts by weight of acrylic acid, to 60-80 parts by weight of an aqueous polyurethane. And mixing;
상기 혼합물을 60 내지 80℃에서 열처리하여 수성 폴리우레탄과 (메타)아크릴계 수지를 포함하는 우레탄 아크릴 하이브리드 수분산체를 얻는 단계; 및Heat treating the mixture at 60 to 80 ° C. to obtain a urethane acrylic hybrid water dispersion comprising an aqueous polyurethane and a (meth) acrylic resin; And
상기 우레탄 아크릴 하이브리드 수분산체에, 알루미나 시멘트 50-80 중량부, 탄산칼슘 30-50 중량부, 실리카 10-30 중량부, 에틸렌 비닐 아세테이트 수지 10-20 중량부 및 (메타)아크릴계 공중합체 10 내지 80 중량부를 함유하는 알루미나 시멘트 복합체를 부가 및 혼합하는 단계;를 포함하는 탄성 도막 방수제의 제조방법에 의하여 이루어진다.To the urethane acrylic hybrid water dispersion, 50-80 parts by weight of alumina cement, 30-50 parts by weight of calcium carbonate, 10-30 parts by weight of silica, 10-20 parts by weight of ethylene vinyl acetate resin and 10-80 (meth) acrylic copolymers Adding and mixing the alumina cement composite containing parts by weight;
이하, 본 발명을 보다 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail.
본 발명에서는 우레탄 아크릴 하이브리드 수분산체와 알루미나 시멘트 복합체로 이루어진 탄성 도막 방수제를 제공한다. 여기에서 우레탄 아크릴 하이브리드 수분산체의 함량은 탄성 도막 방수제 총중량을 기준으로 하여 50 내지 95 중량%이 고, 알루미나 시멘트 복합체의 함량은 탄성 도막 방수제 총중량을 기준으로 하여 5 내지 50 중량%이다. 바람직하게는 상기 우레탄 아크릴 하이브리드 수분산체의 함량은 약 60.9중량%이고, 알루미나 시멘트 복합체의 함량은 39.1중량%인 것이 바람직하다.The present invention provides an elastic coating waterproofing agent consisting of a urethane acrylic hybrid water dispersion and an alumina cement composite. The content of the urethane acrylic hybrid dispersion is 50 to 95% by weight based on the total weight of the elastic coating waterproofing agent, and the content of the alumina cement composite is 5 to 50% by weight based on the total weight of the elastic coating waterproofing agent. Preferably, the content of the urethane acrylic hybrid water dispersion is about 60.9% by weight, and the content of the alumina cement composite is preferably 39.1% by weight.
여기서 우레탄 아크릴 하이브리드 수분산체 및 알루미나 시멘트 복합체의 함량이 상기 범위를 벗어나면 탄성 도막 방수제의 부식과 크랙에 대한 저항성, 방수 기능 등이 저하되어 바람직하지 못하다.If the content of the urethane acrylic hybrid water dispersion and the alumina cement composite is out of the above range, the resistance to corrosion and cracks of the elastic coating waterproofing agent, water resistance, etc. are deteriorated, which is not preferable.
본 발명의 탄성 도막 방수제는 상술한 조성을 갖고 있어서 종래의 무기질 탄성 도막 방수제에서 수분산체로 아크릴 에멀젼이나 에틸렌 비닐 아세테이트 수지를 단독으로 사용한 제품에 비하여 내알칼리성, 내수성, 내용제성, 접착강도, 인장강도 및 신장률이 향상되어 건축 구조물의 수축, 팽창에 의한 내균열 저항성이 매우 강하다. 그리고 내수성과 내알칼리성이 우수하므로 시멘트의 강알칼리 성분에 대한 저항력이 강하여 시공후 도막방수제의 들뜸이나 박리 현상이 발생되지 않는다.The elastic coating film waterproofing agent of the present invention has the above-described composition, compared with the product using acrylic emulsion or ethylene vinyl acetate resin alone as a water dispersion in the conventional inorganic elastic coating film waterproofing agent, and the alkali resistance, water resistance, solvent resistance, adhesive strength, tensile strength and Elongation is improved, so crack resistance is very strong due to shrinkage and expansion of building structure. In addition, since the water resistance and alkali resistance is excellent, the resistance to the strong alkali component of the cement is not strong, the lifting or peeling phenomenon of the coating waterproofing agent does not occur after the construction.
상기 우레탄 아크릴 하이브리드 수분산체는 수성 폴리우레탄 및 (메타)아크릴계 수지로 구성된다.The urethane acrylic hybrid water dispersion is composed of an aqueous polyurethane and a (meth) acrylic resin.
상기 수성 폴리우레탄은 폴리우레탄을 물에 분산 또는 용해시킨 것으로서, 고형분 함량은 20-30 중량%이고 나머지 성분은 물이 70-80 중량%를 차지한다. 그리고 폴리우레탄은 지방족 이소시아네이트를 사용한 음이온성으로 황변 현상이 거의 발생하지 않는다.The aqueous polyurethane is obtained by dispersing or dissolving the polyurethane in water, the solid content is 20-30% by weight and the remaining components account for 70-80% by weight of water. Polyurethane is anionic using aliphatic isocyanate and hardly yellowing occurs.
상기 (메타)아크릴계 수지는 아크릴산 5-10 중량부, 메틸메타크릴레이트 20- 30 중량부, 에틸아세테이트 10-20 중량부의 중합 반응 결과 얻어진 생성물이다. The (meth) acrylic resin is a product obtained as a result of the polymerization reaction of 5-10 parts by weight of acrylic acid, 20-30 parts by weight of methyl methacrylate, and 10-20 parts by weight of ethyl acetate.
본 발명에서 알루미나 시멘트 복합체는 알루미나 시멘트 50-80 중량부, 탄산칼슘 30-50 중량부, 실리카 10-30 중량부, 에틸렌 비닐 아세테이트 수지 10-20 중량부 및 (메타)아크릴계 공중합체 10 내지 80 중량부로 구성된다.In the present invention, the alumina cement composite includes 50-80 parts by weight of alumina cement, 30-50 parts by weight of calcium carbonate, 10-30 parts by weight of silica, 10-20 parts by weight of ethylene vinyl acetate resin, and 10-80 parts by weight of (meth) acrylic copolymer. It consists of wealth.
상기 알루미나 시멘트는 알루미나 함량이 30-40중량%인 고급 시멘트를 말하며, 겉보기 비중이 3.95, 입경이 10~50um 의 범위인 것이 바람직하다.The alumina cement refers to a high-grade cement having an alumina content of 30-40% by weight, it is preferable that the apparent specific gravity is in the range of 3.95, the particle diameter of 10 ~ 50um.
상기 알루미나 시멘트 복합체를 제조하는데 사용되는 에틸렌비닐 아세테이트는 중량평균분자량 20,000-50,000, 특히 약 30,000, 겉보기 비중 300-450, 특히 350, 입경 약 3-10㎛ 특히 약 6um인 미세한 입자를 사용한다. Ethylene vinyl acetate used to prepare the alumina cement composite uses fine particles having a weight average molecular weight of 20,000-50,000, in particular about 30,000, an apparent specific gravity of 300-450, in particular 350, a particle diameter of about 3-10 μm, in particular about 6 μm.
본 발명에서 사용되는 (메타)아크릴계 공중합체는 2종의 아크릴계 반복단위를 갖는 고분자로서, 이 분야에서 통상적으로 사용되는 것을 사용한다. 그 구체적인 예로서 라우릴(메타)아크릴레이트, 메틸(메타)아크릴레이트, 에틸(메타)아크릴레이트, 부틸(메타)아크릴레이트, 스테라일(메타)아크릴레이트, 글리시딜(메타)아크릴레이트중에서 선택된 2종의 반복단위를 갖는 공중합체를 들 수 있고, 그 중에서도 메틸아크릴레이트-Co-메틸메타크릴레이트 공중합체와 같은 아크릴계 반복단위와 메타크릴계 반복단위를 포함하는 공중합체를 들 수 있다.The (meth) acrylic copolymer used in the present invention is a polymer having two kinds of acrylic repeating units, and those commonly used in this field are used. Specific examples thereof include lauryl (meth) acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, stearyl (meth) acrylate, and glycidyl (meth) acrylate. The copolymer which has the selected 2 types of repeating unit is mentioned, Especially, the copolymer containing an acryl-type repeating unit and a methacryl-type repeating unit, such as a methylacrylate-Co-methylmethacrylate copolymer, is mentioned.
이하, 본 발명에 따른 탄성 도막 방수제의 제조방법을 살펴 보기로 한다.Hereinafter, the manufacturing method of the elastic coating waterproofing agent according to the present invention.
먼저 수성 폴리우레탄 60-80 중량부에 (메타)아크릴계 수지 형성용 모노머인 메틸메타크릴레이트 20-30 중량부, 에틸아세테이트 10-20 중량부 및 아크릴산 5-10 중량부를 부가 및 혼합한다. 이어서, 상기 혼합물을 60 내지 80℃에서 열처리하여 수성 폴리우레탄과 (메타)아크릴계 수지를 포함하는 우레탄 아크릴 하이브리드 수분산체를 얻는다. 상기 열처리과정중 (메타)아크릴계 수지 형성 모노머들의 중합 반응이 진행되어 목적하는 (메타)아크릴계 수지가 얻어진다.First, 20-30 parts by weight of methyl methacrylate, 10-20 parts by weight of ethyl acetate, and 5-10 parts by weight of acrylic acid are added and mixed to 60-80 parts by weight of an aqueous polyurethane. Subsequently, the mixture is heat-treated at 60 to 80 ° C. to obtain a urethane acrylic hybrid water dispersion containing an aqueous polyurethane and a (meth) acrylic resin. The polymerization reaction of the (meth) acrylic resin-forming monomers during the heat treatment proceeds to obtain the desired (meth) acrylic resin.
상기 수성 폴리우레탄의 함량은 우레탄 아크릴 하이브리드 수분산체 총중량을 기준으로 하여 10 내지 90 중량%인 것이 바람직하며, 특히 40-70 중량%인 것이 보다 바람직하고 가장 바람직하게는 60 중량%이다. 그리고 상기 (메타)아크릴계 수지의 함량은 우레탄 아크릴 하이브리드 수분산체 총중량을 기준으로 하여 10 내지 90 중량%인 것이 바람직하고 특히 30-60 중량%인 것이 보다 바람직하고 가장 바람직하게는 40 중량%이다. 만약 수성 폴리우레탄의 함량이 상기 범위 미만이면 도막의 탄성이 저하되어 내균열 추종성이 저하되고 상기 범위를 초과하면 점도가 낮아 시공시 갈라짐 현상이 발생하여 바람직하지 못하다.The content of the aqueous polyurethane is preferably 10 to 90% by weight based on the total weight of the urethane acrylic hybrid water dispersion, particularly preferably 40 to 70% by weight, and most preferably 60% by weight. The content of the (meth) acrylic resin is preferably 10 to 90% by weight, more preferably 30 to 60% by weight based on the total weight of the urethane acrylic hybrid water dispersion, and most preferably 40% by weight. If the content of the water-based polyurethane is less than the above range, the elasticity of the coating film is lowered, the crack-tracking resistance is lowered, and if the content exceeds the above range, the viscosity is low, the cracking occurs during construction is not preferable.
상기 열처리온도가 상기 범위를 벗어나면 아크릴수지를 형성하기 위한 중합 반응의 반응성면에서 바람직하지 못하다. 그리고 열처리시간은 열처리온도에 따라 가변적이지만 2-3시간동안 실시하는 것이 바람직하다.If the heat treatment temperature is outside the above range, it is not preferable in view of the reactivity of the polymerization reaction for forming the acrylic resin. And the heat treatment time is variable depending on the heat treatment temperature, but is preferably carried out for 2-3 hours.
상기 (메타)아크릴계 수지 형성용 모노머에서 에틸 아세테이트 수지의 함량이 10 중량부 미만이면 도막 방수제의 방수성 및 접착강도가 저하되고 20중량부를 초과하면 폴리아크릴 하이브리드 수분산체와의 혼화성이 감소되어 바람직하지 못하다. 그리고 아크릴산 및 메타크릴레이트의 함량이 상기 범위를 벗어나면 탄성 도막 방수제의 방수성, 강도 등의 특성이 저하되어 바람직하지 못하다.When the content of the ethyl acetate resin in the (meth) acrylic resin forming monomer is less than 10 parts by weight, the waterproofing property and the adhesive strength of the coating waterproofing agent are lowered, and when it exceeds 20 parts by weight, the miscibility with the polyacrylic hybrid water dispersion is decreased. Can not do it. When the content of acrylic acid and methacrylate is outside the above range, properties such as waterproofness and strength of the elastic coating film waterproofing agent are lowered, which is not preferable.
상기 과정에 따라 얻은 우레탄 아크릴 하이브리드 수분산체에, 알루미나 시 멘트 50-80 중량부, 탄산칼슘 30-50 중량부, 실리카 10-30 중량부, 에틸렌 비닐 아세테이트 수지 10-20 중량부 및 (메타)아크릴계 공중합체 10 내지 80 중량부를 함유하는 알루미나 시멘트 복합체를 부가 및 혼합하여 목적하는 탄성 도막 방수제를 제조할 수 있다. 상기 알루미나 시멘트의 함량은 특히 50 내지 80 중량부가 바람직하다.In the urethane acrylic hybrid water dispersion obtained according to the above process, 50-80 parts by weight of alumina cement, 30-50 parts by weight of calcium carbonate, 10-30 parts by weight of silica, 10-20 parts by weight of ethylene vinyl acetate resin, and (meth) acrylic type The desired elastic coating waterproofing agent can be prepared by adding and mixing the alumina cement composite containing 10 to 80 parts by weight of the copolymer. The content of the alumina cement is particularly preferably 50 to 80 parts by weight.
만약 알루미나 시멘트의 함량이 10 중량부 미만이면 경화속도가 느리고 상기 범위를 초과하면 경화 속도가 촉진되어 시공성이 불량해지므로 바람직하지 않다.If the content of the alumina cement is less than 10 parts by weight, the curing rate is slow, and if it exceeds the above range, the curing rate is accelerated and poor workability is not preferable.
본 발명에서 사용되는 에틸렌 비닐 아세테이트 수지의 함량이 10중량부 미만이면 도막방수제의 방수성과 접착강도가 떨어지고, 20중량부를 초과하면 폴리우레탄 아크릴 하이브리드 수분산체와의 혼화성이 감소하여 도막의 표면에 응집물이 존재하여 장기간 방치하게 되면 누수로 이어지기 때문에 10~20 중량부가 가장 바람직하다.When the content of the ethylene vinyl acetate resin used in the present invention is less than 10 parts by weight, the waterproofing property and the adhesive strength of the coating waterproofing agent are lowered. When the content of the ethylene vinyl acetate resin is more than 20 parts by weight, the miscibility with the polyurethane acrylic hybrid water dispersion decreases and the aggregates are formed on the surface of the coating film. If this is left for a long time, 10-20 parts by weight is most preferable because it leads to leakage.
상기 (메타)아크릴계 공중합체의 함량이 상기 범위를 벗어나면 탄성 도막 방수제의 방수기능, 접착강도 등의 특성이 저하되어 바람직하지 못하다.If the content of the (meth) acrylic copolymer is out of the above range, it is not preferable because properties such as waterproofing function, adhesive strength of the elastic coating film waterproofing agent are lowered.
이하, 본 발명을 하기 실시예를 들어 설명하기로 하되, 본 발명이 하기 실시예로만 한정되는 것은 아니다.Hereinafter, the present invention will be described with reference to the following examples, but the present invention is not limited only to the following examples.
제조예Production Example 1: 폴리우레탄 아크릴 1: polyurethane acrylic 하이브리드hybrid 수분산체의Waterborne 제조 Produce
고형분이 약 25 중량%인 수성 폴리우레탄 70 중량부에 (메타)아크릴계 수지 형성용 모노머인 메틸메타크릴레이트 25 중량부, 에틸아세테이트 15 중량부 및 아크릴산 7 중량부를 부가 및 혼합하여 조성물을 얻었다. 이 조성물을 70℃에서 2.5 시간동안 열처리하여 수성 폴리우레탄과 아크릴수지로 이루어진 우레탄 아크릴 하이브리드 수분산체를 수득하였다. 여기에서 상기 폴리우레탄과 아크릴 수지의 혼합중량비는 6:4이었다.To 70 parts by weight of an aqueous polyurethane having a solid content of about 25% by weight, 25 parts by weight of methyl methacrylate, a monomer for forming a (meth) acrylic resin, 15 parts by weight of ethyl acetate and 7 parts by weight of acrylic acid were added and mixed to obtain a composition. The composition was heat-treated at 70 ° C. for 2.5 hours to obtain a urethane acrylic hybrid water dispersion composed of an aqueous polyurethane and an acrylic resin. Here, the mixed weight ratio of the polyurethane and acrylic resin was 6: 4.
제조예 2: 알루미나시멘트 복합체의 제조Preparation Example 2 Preparation of Alumina Cement Composite
알루미나 시멘트 70 중량부, 탄산칼슘 40 중량부, 실리카 20 중량부, 에틸렌 비닐 아세테이트 수지 15 중량부 및 아크릴계 공중합체인 메틸아크릴레이트-메틸메타크릴레이트 공중합체 50 중량부를 혼합하여 알루미나 시멘트 복합체를 얻었다.Alumina cement composite was obtained by mixing 70 parts by weight of alumina cement, 40 parts by weight of calcium carbonate, 20 parts by weight of silica, 15 parts by weight of ethylene vinyl acetate resin, and 50 parts by weight of methyl acrylate-methyl methacrylate copolymer which is an acrylic copolymer.
실시예 1: 나노 시멘트 입자의 제조예Example 1 Preparation of Nano Cement Particles
상기 제조예 1에 따라 얻은 폴리우레탄 아크릴 하이브리드 수분산체 100 중량부에 상기 제조예 2에 따라 얻은 알루미나시멘트 복합체 60 중량부를 혼합하여 탄성 도막방수제를 제조하였다.The elastic coating film waterproofing agent was prepared by mixing 60 parts by weight of the alumina cement composite obtained in Preparation Example 2 with 100 parts by weight of the polyurethane acrylic hybrid water dispersion obtained in Preparation Example 1.
실시예 2: 세라믹 제품의 제조예Example 2: Preparation of Ceramic Products
상기 제조예 1에 따라 얻은 폴리우레탄 아크릴 하이브리드 수분산체 120 중량부에 상기 제조예 2에 따라 얻은 알루미나시멘트 복합체 80 중량부를 혼합하여 탄성 도막방수제를 제조하였다.80 parts by weight of the alumina cement composite obtained in Preparation Example 2 was mixed with 120 parts of the polyurethane acrylic hybrid water dispersion obtained in Preparation Example 1 to prepare an elastic coating waterproofing agent.
실시예 3Example 3
상기 제조예 1에 따라 얻은 폴리우레탄 아크릴 하이브리드 수분산체 140중량부에 상기 제조예 2에 따라 얻은 알루미나시멘트 복합체 90중량부를 혼합하여 탄성 도막방수제를 제조하였다.The elastic coating film waterproofing agent was prepared by mixing 90 parts by weight of the alumina cement composite obtained in Preparation Example 2 with 140 parts by weight of the polyurethane acrylic hybrid water dispersion obtained in Preparation Example 1.
실시예 4Example 4
상기 제조예 1에 따라 얻은 폴리우레탄 아크릴 하이브리드 수분산체 150중량부에 상기 제조예 2에 따라 얻은 알루미나시멘트 복합체 100중량부를 혼합하여 탄성 도막방수제를 제조하였다. 100 parts by weight of the alumina cement composite obtained in Preparation Example 2 was mixed with 150 parts by weight of the polyurethane acrylic hybrid water dispersion obtained in Preparation Example 1 to prepare an elastic coating waterproofing agent.
상기 실시예 1-4에 따라 얻은 탄성 도막방수제의 성능을 평가하기 위하여 KS 4918 규격에 의거 표준상태에서 시편을 제작한 다음 시제품 A사, 시제품 B사와 비교하여 물성을 측정하였고, 그 결과는 하기 표 1에 나타난 바와 같다.In order to evaluate the performance of the elastic coating waterproofing agent obtained in Example 1-4, the specimens were manufactured in a standard state according to KS 4918 standard, and then the physical properties thereof were measured in comparison with the prototype A company and the prototype B company, and the results are shown in the following table. As shown in 1.
상기 성능 시험에 있어서 내열성과 내한성은 처짐이나 균열이 발생하지 않은상태와 내알카리성과 내산성이 우수한 상태는 "○"로 표기하였고 처짐 현상이 조금 있고 균열은 거의 없으나 딱딱해진 상태를 "△" 그리고 처짐과 균열이 심한 상태와 내알카리성과 내산성이 우수하지않은 상태는 "×"로 표시 하였다In the above performance test, the heat resistance and cold resistance did not cause sagging or cracking and the excellent alkali resistance and acid resistance were marked with "○", and there was a slight sagging phenomenon, almost no cracking, but a hardened state "△" and sagging. Severe cracking conditions and poor alkali and acid resistance are indicated by "x".
[표 1] TABLE 1
* 시제품 A는 아크릴에멀젼형 도막 방수제이고, 시제품 B는 에틸렌비닐아세테이트 도막 방수제이다.* Prototype A is an acrylic emulsion type coating waterproofing agent, and Prototype B is an ethylene vinyl acetate coating film waterproofing agent.
상기 표 1에서 알 수 있듯이, 본 발명에 따른 실시예 1-4의 탄성 도막방수제는 기존 아크릴 에멀젼을 사용하여 제조한 시제품 A와 에틸렌비닐아세테이트 단독으로 사용하여 제조한 시제품 B에 비하여 접착강도가 개선될 뿐만 아니라 인장강도 도 향상되었다. 또한 실시예 1-4의 경우 인장강도가 증가되면서도 신장률이 큰 폭으로 저하하는 경향은 보이지 않았고, 내열성, 내한성, 내알카리성 및 내산성에서도 우수한 성능을 나타내었다.As can be seen in Table 1, the elastic coating film waterproofing agent of Example 1-4 according to the present invention improves the adhesive strength compared to the prototype A prepared by using the existing acrylic emulsion and the prototype B prepared by using ethylene vinyl acetate alone. In addition, the tensile strength was improved. In addition, in the case of Example 1-4, even though the tensile strength was increased, the elongation rate did not show a significant decrease, and it showed excellent performance in heat resistance, cold resistance, alkali resistance, and acid resistance.
이상에서 살펴본 바와 같이, 본 발명의 탄성 도막 방수제는 지하실이나 옥상 등에 시공시 물의 침투를 막는 방수기능은 물론 건축물 및 토목 구조물 구조재료의 부식과 크랙에 대한 저항성을 가지면서 시멘트 혼합계로 동계에도 시공이 가능하다. 그리고 종래의 무기질 탄성 도막 방수제에서 수분산체로 아크릴 에멀젼이나 에틸렌 비닐 아세테이트 수지를 단독으로 사용한 제품에 비하여 내알칼리성, 내수성, 내용제성, 접착강도, 인장강도 및 신장률이 향상되어 건축 구조물의 수축, 팽창에 의한 내균열 저항성이 매우 강하다. 그리고 내수성과 내알칼리성이 우수하므로 시멘트의 강알칼리 성분에 대한 저항력이 강하여 시공후 도막방수제의 들뜸이나 박리 현상이 발생되지 않는다.As described above, the elastic coating film waterproofing agent of the present invention has a waterproofing function to prevent the penetration of water during construction in the basement or rooftop, as well as resistance to corrosion and cracking of building and civil structural structural materials, and construction in winter as a cement mixture system. It is possible. In addition, the alkali resistance, water resistance, solvent resistance, adhesive strength, tensile strength and elongation are improved compared to the products using acrylic emulsion or ethylene vinyl acetate resin alone as a water dispersion in the conventional inorganic elastic coating waterproofing agent. Crack resistance is very strong. In addition, since the water resistance and alkali resistance is excellent, the resistance to the strong alkali component of the cement is not strong, the lifting or peeling phenomenon of the coating waterproofing agent does not occur after the construction.
상기에서 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술 분야의 숙련된 당업자는 하기의 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although described above with reference to the preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated.
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| WO2010124327A1 (en) | 2009-04-28 | 2010-11-04 | Infrastructure Technology Limited | Channel and water storage liner |
| CN102471631A (en) * | 2009-07-02 | 2012-05-23 | Sika技术股份公司 | Acrylic-polyurethane polymer coating dispersions for roofing |
| KR101144678B1 (en) * | 2010-07-09 | 2012-05-24 | 주식회사 제이에스기술 | Waterproof agent for elastic membrane and method for producting thereof |
| CN104140728A (en) * | 2014-08-08 | 2014-11-12 | 鳄鱼制漆(上海)有限公司 | JS elastic waterproof coating |
| WO2016142339A1 (en) * | 2015-03-09 | 2016-09-15 | Basf Se | Flexible cementitious waterproofing slurry |
| KR102133243B1 (en) * | 2020-04-22 | 2020-07-13 | 케이알건설 주식회사 | Eco-friendly water-soluble coating material for medium corrosion and spray-type medium corrosion coating method using the same |
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| JP3969832B2 (en) * | 1997-04-02 | 2007-09-05 | 電気化学工業株式会社 | Waterproof material composition, process for producing the same, waterproof film and method for forming the same |
| KR100434800B1 (en) * | 2001-05-25 | 2004-06-07 | 주식회사 휴먼텍코퍼레이션 | Waterproofing Stuff as a Membrane of Urethane/Acrylate Hybride Rubber System |
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| WO2010124327A1 (en) | 2009-04-28 | 2010-11-04 | Infrastructure Technology Limited | Channel and water storage liner |
| EP2425060A1 (en) * | 2009-04-28 | 2012-03-07 | Infrastructure Technology Limited | Channel and water storage liner |
| EP2425060A4 (en) * | 2009-04-28 | 2014-07-09 | Infrastructure Technologies Ltd | Channel and water storage liner |
| CN102471631A (en) * | 2009-07-02 | 2012-05-23 | Sika技术股份公司 | Acrylic-polyurethane polymer coating dispersions for roofing |
| KR101144678B1 (en) * | 2010-07-09 | 2012-05-24 | 주식회사 제이에스기술 | Waterproof agent for elastic membrane and method for producting thereof |
| CN104140728A (en) * | 2014-08-08 | 2014-11-12 | 鳄鱼制漆(上海)有限公司 | JS elastic waterproof coating |
| WO2016142339A1 (en) * | 2015-03-09 | 2016-09-15 | Basf Se | Flexible cementitious waterproofing slurry |
| KR102133243B1 (en) * | 2020-04-22 | 2020-07-13 | 케이알건설 주식회사 | Eco-friendly water-soluble coating material for medium corrosion and spray-type medium corrosion coating method using the same |
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| CN115895429A (en) * | 2021-12-10 | 2023-04-04 | 江苏科祥防腐材料有限公司 | Water-based colored material for road color changing and preparation method thereof |
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| KR100917703B1 (en) | 2009-09-21 |
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