KR20110117506A - Aqueous membrane waterproof agent for concrete structure and preparation process of the same - Google Patents
Aqueous membrane waterproof agent for concrete structure and preparation process of the same Download PDFInfo
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- KR20110117506A KR20110117506A KR1020100037003A KR20100037003A KR20110117506A KR 20110117506 A KR20110117506 A KR 20110117506A KR 1020100037003 A KR1020100037003 A KR 1020100037003A KR 20100037003 A KR20100037003 A KR 20100037003A KR 20110117506 A KR20110117506 A KR 20110117506A
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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
- 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
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- C08L33/00—Compositions 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
- C08L33/04—Homopolymers or copolymers of esters
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- C08L33/00—Compositions 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
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/80—Processes for incorporating ingredients
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/12—Materials for stopping leaks, e.g. in radiators, in tanks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
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Abstract
본 발명의 콘크리트 구조물용 수용성 도막방수제는, (A) 수용성 에틸렌 비닐아세트산 기상공중합체 50~60 중량%; (B) 수용성 아크릴 에멀젼 수지 20~30 중량%; 및 (C) 폴리부틸 아크릴산 공중합체 10~20 중량%를 포함하는 수지 조성물로 이루어지며, 고형분 함량 40~60 %, 점도 5,000∼10,000 cps이고, 상기 폴리부틸 아크릴산 공중합체(C)는 폴리부틸 아크릴산과 폴리에틸 아크릴산, 폴리스틸렌, 폴리아크릴산이 물과 유화 중합되어 이루어지는 것을 특징으로 하고 있다.
상기 수용성 도막방수제의 제조방법은 상기 (A)+(B)+(C)로 구성되는 수지 조성물을 혼합용기에 투입하는 제1단계와, 상기 혼합용기를 100∼300 rpm의 회전속도로 1~3 시간 동안 교반시켜 점도 5,000∼10,000 cps가 되도록 혼합하는 제2단계에 의해 제조되는 것을 특징으로 한다.
본 발명에 따른 콘크리트 구조물용 수용성 도막방수제는 수용성 에틸렌 비닐아세트산 기상공중합체를 사용함으로써 배합안정성이 우수하고 고형분 함량이 높아서 건조속도가 빠르며, 수용성 아크릴 에멀젼 수지 및 폴리부틸 아크릴산 공중합체로 된 접착제를 일정 비율로 혼합함으로써 내산성, 내알칼리성, 내유성, 내열성 및 인장강도가 우수하여 장기간 동안 자외선이나 기온의 변화에 강하고, 또한 고온(약 70 ℃)과 저온(약 -50 ℃)에서도 물성의 변화가 거의 없으며, 수분이 있는 곳에서도 부착성이 양호하여 기존의 방수층을 철거하지 않아도 시공이 가능하게 된다.
또한, 상기 수용성 도막방수제를 물에 혼합하여 교반한 후 사용함으로써 유기용제에 의한 유해성이 전혀 없으며, 시공 후에는 표면 평활성과 외관 성능이 우수한 콘크리트 시공면의 방수층을 제공하게 된다.
또한, 본 발명에 따른 수용성 도막방수제는 인장성이 우수하여 하절기에는 유연성이 좋고 동절기의 수축에 따른 크랙이 발생되지 않으므로, 주상 및 벽면 방수에 부직포와 함께 시공함으로써 방수층 표면에 탄력성과 단열성을 부여할 뿐만 아니라 미세크랙 발생을 더욱 효과적으로 방지할 수도 있다.
그리고 본 발명의 수용성 도막방수제를 기존의 시멘트와 배합하여 사용하게 되면 방수성은 물론 미장면의 부착성 향상 및 균열을 방지하게 될 뿐만 아니라 건조 후 표면이 미려하게 되어 건축용 내외장재의 다목적 첨가제로 사용할 수 있는 탁월한 효과가 있다.Water-soluble coating film waterproofing agent for concrete structures of the present invention, (A) 50 to 60% by weight of water-soluble ethylene vinyl acetate gas phase copolymer; (B) 20-30% by weight of the water-soluble acrylic emulsion resin; And (C) a resin composition comprising 10 to 20% by weight of a polybutyl acrylic acid copolymer, a solid content of 40 to 60%, a viscosity of 5,000 to 10,000 cps, and the polybutyl acrylic acid copolymer (C) is polybutyl acrylic acid. And polyethyl acrylate, polystyrene, and polyacrylic acid are emulsion polymerization with water.
The manufacturing method of the water-soluble coating waterproofing agent is a first step of injecting the resin composition consisting of the (A) + (B) + (C) to the mixing vessel, and the mixing vessel 1 ~ at a rotational speed of 100 ~ 300 rpm It is characterized in that it is prepared by a second step of mixing for 3 hours by stirring to a viscosity of 5,000 to 10,000 cps.
Water-soluble coating film waterproofing agent for concrete structures according to the present invention by using a water-soluble ethylene vinyl acetate gas phase copolymer is excellent in mixing stability and high solid content, fast drying speed, constant adhesive of water-soluble acrylic emulsion resin and polybutyl acrylic acid copolymer By mixing at a ratio, it has excellent acid resistance, alkali resistance, oil resistance, heat resistance, and tensile strength, and is resistant to changes in ultraviolet rays and air temperature for a long time, and hardly changes in physical properties even at high temperature (about 70 ℃) and low temperature (about -50 ℃). Also, even in the presence of moisture, the adhesion is good, it is possible to construct without removing the existing waterproof layer.
In addition, since the water-soluble coating waterproofing agent is mixed with water and used after stirring, there is no harmful effect of the organic solvent, and after construction, it provides a waterproof layer of a concrete construction surface excellent in surface smoothness and appearance performance.
In addition, since the water-soluble coating waterproofing agent according to the present invention has excellent tensile property and flexibility in the summer season and cracks do not occur due to the shrinkage of the winter season, the water-soluble coating waterproofing agent can be provided with non-woven fabrics for columnar and wall waterproofing to impart elasticity and insulation to the surface of the waterproof layer. In addition, it is possible to more effectively prevent the occurrence of microcracks.
In addition, when the water-soluble coating waterproofing agent of the present invention is used in combination with the existing cement, not only the waterproofness but also the adhesion of the surface and the prevention of cracking are improved, and the surface is beautiful after drying, so that it can be used as a multi-purpose additive for building interior and exterior materials. Excellent effect
Description
본 발명은 콘크리트 구조물용 수용성 도막방수제 및 그 제조방법에 관한 것으로, 더욱 상세하게는 옥상정원, 지하주차장, 건축 및 토목구조물의 바닥면이나 내외 벽체, 수영장, 물탱크 등 다양한 용도의 콘크리트 구조물 표면에 수용성 에틸렌 비닐아세트산 기상공중합체에 수용성 아크릴 에멀젼 수지 및 폴리부틸 아크릴산 공중합체로 된 접착제를 일정 비율로 혼합한 수지 조성물을 사용하여 방수시공을 함으로써 물의 침투를 막는 방수기능은 물론 건축물 구조재료의 부식과 크랙에 대한 저항성을 갖도록 한 다목적 콘크리트 구조물용 수용성 도막방수제 및 그 제조방법에 관한 것이다.The present invention relates to a water-soluble coating waterproofing agent for a concrete structure and a method of manufacturing the same, and more particularly to the surface of the concrete structure of various uses such as the roof surface, underground parking lot, building and civil engineering structures, floors, interior and exterior walls, swimming pools, water tanks, etc. Water-resistant construction using a resin composition in which a water-soluble ethylene vinyl acetate gas phase copolymer is mixed with an adhesive made of a water-soluble acrylic emulsion resin and a polybutyl acrylic acid copolymer at a predetermined ratio, prevents water penetration and prevents corrosion of building structural materials. The present invention relates to a water-soluble coating waterproofing agent for a multipurpose concrete structure having a resistance to cracking, and a method of manufacturing the same.
일반적으로 건축 및 토목구조물의 보호 시스템으로 사용되는 방수재료에는 그 시공방식에 따라 쉬트식 방수재료, 도막식 방수재료 및 침투식 방수재료가 있다.In general, the waterproofing materials used as protection systems for construction and civil engineering structures include sheet type waterproofing materials, coating type waterproofing materials, and penetration type waterproofing materials.
이 중 침투식 방수재료를 이용하여 시공하는 방법은 과거에 교량 상판 등의 방수시공에 사용하던 방법으로, 주로 실리콘을 강력한 용제로 용해하여 액상의 침투방수제로 사용한 공법인데, 침투식 방수재료를 사용한 시공방법은 균열에 대한 저항성이 낮고, 300 kgf/㎠ 이상의 고강도 콘크리트에는 침투가 되지 않는 문제점이 있어 최근에는 거의 사용하지 않고 있다.Among them, the method of construction using the penetration-proof waterproof material is a method used in the past for the waterproof construction of bridge decks, and is mainly a method of dissolving silicon with a strong solvent and using it as a liquid penetration waterproofing agent. The construction method is low in resistance to cracking and has a problem of not penetrating into high-strength concrete of 300 kgf / cm 2 or more.
그리고 쉬트식 방수시공은 균일하고 우수한 방수효과를 발휘하기는 하지만, 비용이 많이 들고 시공과정에서 쉬트 간의 연결작업이 어려워 표면이 균일하지 못하고, 연결부위 누수로 인하여 방수기능을 상실하는 경우도 있다.In addition, although the sheet type waterproof construction exhibits a uniform and excellent waterproof effect, the surface is not uniform due to high cost and difficult connection work between sheets in the construction process, and the waterproof function may be lost due to leakage of the connection part.
한편, 도막식 방수시공은 연결부위가 없는 연속시공이 가능하고, 효과면에서도 우수하지만 콘크리트의 균열에 대한 저항성이 약하고 계면에서 방수성능이 상실되는 단점을 가지고 있었다.On the other hand, the coating-type waterproof construction is capable of continuous construction without connecting parts, and excellent in effect, but has a disadvantage in that the resistance to cracking of the concrete is weak and the waterproofing performance is lost at the interface.
상기와 같이 건축 및 토목용으로 도막식 방수시공에 사용되는 방수제는 고무아스팔트, 아크릴고무 또는 아크릴수지 등이 주성분인 에멀젼형과, 클로로프렌이나 클로로설폰화폴리에틸렌이 함유된 용액형 우레탄이나 에폭시수지가 주성분인 반응형이 있으며, 이들 중 고무아스팔트계와 우레탄계 방수제가 많이 사용되고 있다.The waterproofing agent used in the coating-type waterproof construction for construction and civil engineering as described above is an emulsion type mainly composed of rubber asphalt, acrylic rubber or acrylic resin, and a solution type urethane or epoxy resin containing chloroprene or chlorosulfonated polyethylene. There are phosphorus reaction types, and among them, rubber asphalt and urethane waterproofing agents are frequently used.
상기 고무아스팔트계 방수제는 아스팔트에 합성고무와 각종 수지를 혼합하여 고분자의 열가소성 성질을 이용하여 급격히 경화시키는 열공법과, 합성라텍스에 아스팔트를 유화시킨 후 수분의 증발에 의해 자연경화시키는 냉공법에 의해 제조되며, 보통 아스팔트에는 스티렌 계통의 중합체, 어탁틱폴리프로필렌, 스티렌부타디엔 라텍스 등이 혼합 사용되고 있다.The rubber asphalt waterproofing agent is prepared by mixing a synthetic rubber and various resins on asphalt and rapidly curing by using a thermoplastic property of a polymer, and by cold cooling by emulsifying asphalt on synthetic latex and then natural curing by evaporation of moisture. In general, asphalt is mixed with a styrene-based polymer, atactic polypropylene, styrene butadiene latex and the like.
그리고 우레탄계 도막방수제는 용제형 우레탄계가 흔히 사용되며, 최근에는 환경공해나 독성에 대한 작업안전성을 고려하여 폴리우레탄 에멀젼, 폴리우레탄 콜로이드 분산체, 폴리우레탄 수용액 등의 성상으로 수용성 우레탄계 방수제를 개발하여 사용하고 있으나, 아직 내구성을 비롯한 물성면에서는 기존 용제형 우레탄계 방수제 보다 미흡한 점이 많다.In addition, solvent-type urethanes are commonly used for urethane-based waterproofing coatings. Recently, water-soluble urethane-based waterproofing agents have been developed and used in the form of polyurethane emulsions, polyurethane colloidal dispersions, and polyurethane aqueous solutions in consideration of work safety against environmental pollution and toxicity. However, in terms of properties including durability, there are still many points that are inferior to conventional solvent type urethane-based waterproofing agents.
이상에서 열거한 도막방수제는 건축물 등에서의 누수를 방지코자 하는 방수제로서의 기본 기능 이외에, 최근 방수제로서 요구되고 있는 건축물의 부식과 잡초 및 해충의 서식 방지, 건물 옥상의 화단 조성이나 수목 식재가 가능토록 하는 미장성, 그리고 급격한 외부온도의 변화에 의해 발생하는 크랙에 대한 저항성 등에는 문제가 있다. 특히 종래 고무아스팔트 방수제의 경우에도 고무 성분이 적어 건축물의 균열을 방지하는 기능은 거의 갖고 있지 못하다.In addition to the basic functions as a waterproofing agent intended to prevent water leakage in buildings, the above-mentioned coating film waterproofing agents are capable of preventing corrosion of buildings, habitat of weeds and pests, formation of flower beds on the roof of buildings, and planting of trees. There is a problem in the appearance and resistance to cracking caused by a sudden change in external temperature. In particular, even in the case of the conventional rubber asphalt waterproofing agent, there is little rubber component and has little function to prevent cracking of buildings.
상기 침투식 방수제 또는 도막식 방수제는 개발된 기술이 많이 알려져 있으나, 최근 친환경적인 요구에 부응하여 대표적인 도막식 방수제로서 에멀젼형 방수제를 사용하고자 하는 시도가 있으며, 아울러 주로 쉬트식 방수재료와 결합하여 사용하고자 하는 연구도 진행되고 있는 실정이다.The penetration type waterproofing agent or the coating type waterproofing agent is well known in the art, but recently, there has been an attempt to use an emulsion type waterproofing agent as a representative coating type waterproofing agent in response to environmentally friendly demands, and is mainly used in combination with a sheet waterproofing material. The research to be conducted is also in progress.
본 발명과 관련하여 대표적인 에멀젼형 방수제에 관한 기술로서, 대한민국 공개특허 제10-2007-0094240호(공개일 : 2007. 9. 20)에는 일액형 무기질 탄성도막방수제의 제조방법에 있어서, 중량비를 기준으로 단량체인 비닐아세테이트와 에칠헥실아크릴산를 혼합하여 단량체혼합물을 생성한 다음 폴리비닐알콜을 가하고 탈이온수에 소디움 아세테이트를 녹여 첨가하며, 단량체 혼합물 및 테트라 메르캅탄을 가하여 교반한 후 포타슘썰퍼네이트를 투입하여 일액형 무기질 탄성도막방수제의 제조하는 방법이 알려져 있으며, 대한민국 등록특허 제10-0942521호(공고일 : 2010. 2. 16)에는 도막방수재를 이용한 복합 단열 도막방수 공법에 사용되는 나노세라믹 단열 도막방수재로서, 아크릴 고무계 에멀젼 또는 변성 아크릭우레탄 고무계 에멀젼 30 내지 60중량부, 소포제 0.5 내지 1.5중량부, 분산제 0.3 내지 1.0중량부, 물 10 내지 15중량부, 충진제 20 내지 30중량부, 세라믹 구형 중공체분말(hollow ceramic microspheres) 10 내지 30 중량부, 무기질 미세안료(nanosized inorganic colorant) 0.1 내지 0.5중량부로 구성된 나노세라믹 단열 도막방수재를 도포하는 기술을 개시하고 있다.As a technique related to a typical emulsion type waterproofing agent in connection with the present invention, Korean Patent Laid-Open No. 10-2007-0094240 (published: Sep. 20, 2007), in the manufacturing method of the one-component inorganic elastic film waterproofing agent, based on the weight ratio The mixture of vinyl acetate and ethylhexyl acrylic acid, which are monomers, is used to form a monomer mixture. Then, polyvinyl alcohol is added and sodium acetate is dissolved in deionized water. The monomer mixture and tetramercaptan are added to the mixture, followed by stirring. A method of preparing a liquid inorganic elastic coating waterproofing agent is known, and the Republic of Korea Patent No. 10-0942521 (published: February 16, 2010) is a nano-ceramic insulating coating waterproofing material used in the composite insulating coating waterproofing method using a coating waterproofing, 30 to 60 parts by weight of an acrylic rubber emulsion or a modified acrylic urethane rubber emulsion, antifoaming agent 0 .5 to 1.5 parts by weight, dispersant 0.3 to 1.0 part by weight, water 10 to 15 parts by weight, filler 20 to 30 parts by weight, 10 to 30 parts by weight of ceramic ceramic hollow spheres (hollow ceramic microspheres), mineralized inorganic pigment colorant) discloses a technique for applying a nano-ceramic insulating coating waterproofing material composed of 0.1 to 0.5 parts by weight.
그러나 상기 공지방법에 의한 기술은 모두 습기와 내구성에 취약한 점이 있고, 주성분이 반응형 수지이기 때문에 작업상의 불편이 있거나 다층피막을 형성하는 공법 또는 시공방법의 번잡함에 따르는 효율성 측면에서 문제점이 있으므로, 이에 본 발명은 수분이 있는 곳에서도 부착성이 양호하여 기존의 방수층을 철거하지 않아도 여러 가지 방법으로 시공이 가능한 다목적 콘크리트 구조물용 수용성 도막방수제를 개발함으로써 본 발명을 완성한 것이다.However, all of the techniques by the above known methods are vulnerable to moisture and durability, and since the main component is a reactive resin, there is a problem in terms of efficiency due to the inconvenience of work or the complexity of the construction method or construction method for forming a multilayer coating. The present invention has completed the present invention by developing a water-soluble coating waterproofing agent for a multi-purpose concrete structure that can be installed in a variety of ways even if the adhesion is good even in the presence of moisture.
본 발명의 목적은 수용성 에틸렌 비닐아세트산 기상공중합체에 수용성 아크릴 에멀젼 수지 및 폴리부틸 아크릴산 공중합체로 된 접착제를 일정 비율로 혼합 사용함으로써 내산성, 내알칼리성, 내유성, 내열성 및 인장강도가 우수하여 장기간 동안 자외선이나 기온의 변화에 강하고, 또한 고온(약 70 ℃)과 저온(약 -50 ℃)에서도 물성의 변화가 거의 없으며, 수분이 있는 곳에서도 부착성이 양호하여 기존의 방수층을 철거하지 않아도 시공이 가능한 다목적 콘크리트 구조물용 수용성 도막방수제를 제공하는 것이다.An object of the present invention is to mix the adhesive of water-soluble acrylic emulsion resin and polybutyl acrylic acid copolymer with water-soluble ethylene vinyl acetate gas phase copolymer in a certain ratio, so that it is excellent in acid resistance, alkali resistance, oil resistance, heat resistance and tensile strength for a long time. It is resistant to changes in temperature and temperature, and has almost no change in physical properties even at high temperatures (about 70 ℃) and low temperatures (about -50 ℃), and has good adhesion even in the presence of moisture, so that it can be installed without removing the existing waterproof layer. It is to provide a water-soluble coating waterproofing agent for a multi-purpose concrete structure.
본 발명의 다른 목적은 상기 수용성 도막방수제는 유기용제를 전혀 사용하지 않음으로써 유기용제에 의한 유해성이 없으며, 고형분 함량과 점도가 높아 시공 후에는 표면 평활성과 외관 성능이 우수한 콘크리트 구조물용 수용성 도막방수제의 제조방법을 제공하는 것이다.Another object of the present invention is that the water-soluble coating waterproofing agent does not use any organic solvents, there is no harmful by organic solvents, and since the solid content and viscosity are high, the water-soluble coating waterproofing agent for concrete structures has excellent surface smoothness and appearance performance after construction. It is to provide a manufacturing method.
본 발명은 상기 과제를 해결하기 위한 것으로서, 본 발명에 의한 콘크리트 구조물용 수용성 도막방수제는, (A) 수용성 에틸렌 비닐아세트산 기상공중합체 50~60 중량%; (B) 수용성 아크릴 에멀젼 수지 20~30 중량%; 및 (C) 폴리부틸 아크릴산 공중합체 10~20 중량%를 포함하는 수지 조성물로 이루어지고, 상기 수지 조성물은 고형분 함량이 40~60 %, 점도가 5,000∼10,000 cps이며, 상기 폴리부틸 아크릴산 공중합체는 폴리부틸 아크릴산과 폴리에틸 아크릴산, 폴리스틸렌, 폴리아크릴산이 물과 유화 중합되어 이루어지는 것을 특징으로 하고 있다.The present invention is to solve the above problems, the water-soluble coating film waterproofing agent for concrete structures according to the present invention, (A) 50 to 60% by weight of water-soluble ethylene vinyl acetate gas phase copolymer; (B) 20-30% by weight of the water-soluble acrylic emulsion resin; And (C) 10 to 20 wt% of a polybutyl acrylic acid copolymer, wherein the resin composition has a solid content of 40 to 60%, a viscosity of 5,000 to 10,000 cps, and the polybutyl acrylic acid copolymer Polybutyl acrylic acid, polyethyl acrylic acid, polystyrene, and polyacrylic acid are characterized by emulsion polymerization with water.
또한, 상기 수용성 도막방수제의 제조방법은 상기 (A)+(B)+(C)로 구성되는 수지 조성물을 혼합용기에 투입하는 제1단계와, 상기 혼합용기를 100∼300 rpm의 회전속도로 1~3 시간 동안 교반시켜 점도 5,000∼10,000 cps가 되도록 혼합하는 제2단계로 제조되는 것을 특징으로 한다.In addition, the manufacturing method of the water-soluble coating film waterproofing agent is a first step of injecting the resin composition consisting of the (A) + (B) + (C) to the mixing vessel, and the mixing vessel at a rotational speed of 100 ~ 300 rpm Stirring for 1 to 3 hours is characterized in that the second step of mixing to make a viscosity 5,000 to 10,000 cps.
본 발명에 따른 콘크리트 구조물용 수용성 도막방수제는 수용성 에틸렌 비닐아세트산 기상공중합체를 사용함으로써 배합안정성이 우수하고 고형분 함량이 높아서 건조속도가 빠르며, 수용성 아크릴 에멀젼 수지 및 폴리부틸 아크릴산 공중합체로 된 접착제를 일정 비율로 혼합함으로써 내산성, 내알칼리성, 내유성, 내열성 및 인장강도가 우수하여 장기간 동안 자외선이나 기온의 변화에 강하고, 또한 고온(약 70 ℃)과 저온(약 -50 ℃)에서도 물성의 변화가 거의 없으며, 수분이 있는 곳에서도 부착성이 양호하여 기존의 방수층을 철거하지 않아도 시공이 가능하게 된다.Water-soluble coating film waterproofing agent for concrete structures according to the present invention by using a water-soluble ethylene vinyl acetate gas phase copolymer is excellent in the mixing stability and high solid content drying rate is fast, constant adhesive of water-soluble acrylic emulsion resin and polybutyl acrylic acid copolymer By mixing at a ratio, it has excellent acid resistance, alkali resistance, oil resistance, heat resistance, and tensile strength, and is resistant to changes in ultraviolet rays and air temperature for a long time, and hardly changes in physical properties even at high temperature (about 70 ℃) and low temperature (about -50 ℃). Also, even in the presence of moisture, the adhesion is good, it is possible to construct without removing the existing waterproof layer.
또한, 상기 콘크리트 구조물용 수용성 도막방수제는 유기용제에 의한 유해성이 전혀 없으며, 시공 후에는 표면 평활성과 외관 성능이 우수한 콘크리트 시공면의 코팅층을 제공하게 된다.In addition, the water-soluble coating waterproofing agent for the concrete structure is not at all harmful by organic solvents, and after construction will provide a coating layer of the concrete construction surface excellent surface smoothness and appearance performance.
또한, 본 발명에 따른 수용성 도막방수제는 인장성이 우수하여 하절기에는 유연성이 좋고 동절기의 수축에 따른 크랙이 발생되지 않으므로, 주상 및 벽면 방수에 부직포와 함께 시공함으로써 방수층 표면에 탄력성과 단열성을 부여할 뿐만 아니라 미세크랙 발생을 더욱 효과적으로 방지할 수도 있다.In addition, since the water-soluble coating waterproofing agent according to the present invention has excellent tensile property and flexibility in the summer season and cracks do not occur due to the shrinkage of the winter season, the water-soluble coating waterproofing agent can be provided with non-woven fabrics for columnar and wall waterproofing to impart elasticity and insulation to the surface of the waterproof layer. In addition, it is possible to more effectively prevent the occurrence of microcracks.
그리고 본 발명의 수용성 도막방수제를 기존의 시멘트와 배합하여 사용하게 되면 방수성은 물론 미장면의 부착성 향상 및 균열을 방지하게 될 뿐만 아니라 건조 후 표면이 미려하게 되어 건축용 내외장재의 다목적 첨가제로 사용할 수 있는 탁월한 효과가 있다.In addition, when the water-soluble coating waterproofing agent of the present invention is used in combination with the existing cement, not only the waterproofness but also the adhesion of the surface and the prevention of cracking are improved, and the surface is beautiful after drying, so that it can be used as a multi-purpose additive for building interior and exterior materials. Excellent effect
본 발명은 콘크리트 구조물용 수용성 도막방수제를 구성함에 있어 (A) 수용성 에틸렌 비닐아세트산 기상공중합체 50~60 중량%; (B) 수용성 아크릴 에멀젼 수지 20~30 중량%; 및 (C) 폴리부틸 아크릴산 공중합체 10~20 중량%를 각각 포함하여 이루어지는 고형분 함량 40~60 %, 점도 5,000∼10,000 cps인 수지 조성물로서, 본 발명에 따른 콘크리트 구조물용 수용성 도막방수제의 제조방법은 상기 (A)+(B)+(C)로 구성되는 수지 조성물을 혼합용기에 투입하는 제1단계와, 상기 혼합용기를 100∼300 rpm의 회전속도로 1~3 시간 동안 교반시켜 점도 5,000∼10,000 cps가 되도록 혼합하는 제2단계의 순으로 제조된다.The present invention comprises a water-soluble coating film waterproofing agent for concrete structures (A) 50 to 60% by weight of water-soluble ethylene vinyl acetate gas phase copolymer; (B) 20-30% by weight of the water-soluble acrylic emulsion resin; And (C) a resin composition having a solid content of 40 to 60% and a viscosity of 5,000 to 10,000 cps comprising 10 to 20% by weight of a polybutyl acrylic acid copolymer, respectively. The first step of injecting the resin composition consisting of the (A) + (B) + (C) to the mixing vessel, and the mixing vessel was stirred for 1 to 3 hours at a rotational speed of 100 to 300 rpm to viscosity 5,000 ~ Prepared in the order of the second step of mixing to 10,000 cps.
이하에서는, 본 발명의 구성에 대한 각 성분의 작용을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 예시하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, the operation of each component to the configuration of the present invention will be described in detail, which is intended to illustrate the extent to which one of ordinary skill in the art can easily carry out the invention, It is not intended that the technical spirit and scope of the invention be limited.
일반적으로 유화 중합에 의해 제조된 폴리비닐아세트산은 낮은 유리전이 온도를 가지고 있어 수지를 가소화시키는데 도움이 되어 페인트의 바인더, 나무나 종이의 접착제 등에 광범위하게 사용된다.In general, polyvinylacetic acid produced by emulsion polymerization has a low glass transition temperature, which helps to plasticize the resin and is widely used in binders of paint, adhesives of wood or paper, and the like.
본 발명에서 상기 수용성 에틸렌 비닐아세트산(ethylene-vinyl acetate) 기상공중합체(A)는, 폴리에틸렌의 평균분자량이 1,000~12,000 범위의 밀도 0.918~0.932 g/㎤를 갖는 중합체를 기상법으로 제조함으로써 분말 형태의 고분자 물질을 얻을 수 있으며, 분자량 분포가 좁은 것을 사용하는 것이 제품의 균일성 측면에서 바람직하고, 폴리에틸렌은 그 주쇄에 아크릴산이나 무수말레산 등의 극성을 가진 모노머를 측쇄로 하여 화학적으로 결합시킨 공중합체를 얻을 수 있는데, 본 발명에서는 에틸렌에 비닐아세트산을 그래프트 중합시킨 공중합체를 이용함으로써 유연성을 증대시키고자 하는 것이다.In the present invention, the water-soluble ethylene-vinyl acetate gas phase copolymer (A) is formed in a powder form by preparing a polymer having a density of 0.918 to 0.932 g / cm 3 having an average molecular weight of polyethylene in the range of 1,000 to 12,000. It is preferable to use a polymer having a narrow molecular weight distribution in terms of uniformity of the product, and polyethylene is a copolymer obtained by chemically bonding a monomer having a polar monomer, such as acrylic acid or maleic anhydride, as its side chain. In the present invention, it is intended to increase flexibility by using a copolymer obtained by graft polymerization of vinyl acetic acid on ethylene.
그리고 상기 수용성 에틸렌 비닐아세트산 기상공중합체(A)는 에틸렌(ethylene)과 비닐아세트산(vinyl acetate)을 공중합하여 생산할 경우 비닐아세트산의 양은 1~50% 정도이며 필름용에는 비닐아세트산 함량이 약 1~25% 정도 사용되지만, 비닐아세트산 함량이 증가하면 할수록 필름의 탄성률과 열접착온도는 낮아지는 반면 충격강도, 인장강도, 투과도는 증가되므로, 본 발명에서는 비닐아세트산의 함량이 25% 이상인 것을 사용하여 양호한 접착성과 인장강도를 발휘하게 되는데, 이는 저온 하에서도 유연성이 있고 저온 열접착성과 핫택성(hot tack, 열접착 직후의 접착강도)이 좋기 때문이다.And when the water-soluble ethylene vinyl acetate vapor copolymer (A) is produced by copolymerizing ethylene (ethylene) and vinyl acetate (vinyl acetate), the amount of vinyl acetate is about 1 to 50% and the vinyl acetate content is about 1 to 25 for film % Is used, but as the vinylacetic acid content increases, the elastic modulus and thermal bonding temperature of the film decreases while the impact strength, tensile strength, and permeability are increased. In the present invention, good adhesion is achieved using a vinyl acetic acid content of 25% or more. It exhibits excellent tensile strength because it is flexible even at low temperatures, and has good low temperature thermal adhesion and hot tack (adhesive strength immediately after thermal bonding).
또한, 수용성 아크릴 에멀젼 수지(B)는 총 수지 조성물 대비 20~30 중량%로서, (A)성분 50~60 중량%와 비교하여 대략 1/3~1/2의 중량비로 혼합되는바, 일반적으로 아크릴 수지는 아크릴산이나 메타크릴산의 에스테르를 중합해서 얻는 열가소성 수지의 총칭으로서 상기 아크릴 에멀젼을 접착제로 사용할 경우 보통은 바인더로 사용하나, 본 발명에서는 아크릴산을 중합할 때 알칼리를 넣어 pH를 높여주면 점도가 향상되는 상태가 되어 완전히 굳지 않고 점성의 폴리머가 되므로, 상기와 같은 아크릴 에멀젼 수지(B)의 조성비로 인하여 수지 조성물에 소정의 물을 혼합하여 도막방수제를 제조할 시 적합한 점도를 유지 할 수 있을 뿐만 아니라 건조 후에 바닥면과의 밀착성이 높은 도막방수제를 형성할 수 있게 되는 것이다.In addition, the water-soluble acrylic emulsion resin (B) is 20 to 30% by weight relative to the total resin composition, it is mixed in a weight ratio of approximately 1/3 to 1/2 compared to 50 to 60% by weight of the component (A), generally Acrylic resin is a general term for the thermoplastic resin obtained by polymerizing esters of acrylic acid or methacrylic acid. When the acrylic emulsion is used as an adhesive, it is usually used as a binder, but in the present invention, when the acrylic acid is polymerized to increase the pH, the viscosity is increased. Is a state in which the improved state is not completely hardened and becomes a viscous polymer. Thus, due to the composition ratio of the acrylic emulsion resin (B), a suitable viscosity can be maintained when preparing a coating film waterproofing agent by mixing predetermined water with the resin composition. In addition, it is possible to form a coating film waterproofing agent having high adhesion to the bottom surface after drying.
다음으로, 상기 수지 조성물에 혼합되는 폴리부틸 아크릴산 공중합체(C)는 접착제로 사용되며, 이는 방수면 표면에 약간의 탄성을 부여하면서 표면의 크랙을 방지하는 효과를 갖게 되는바, 상기 폴리부틸 아크릴산 공중합체(C)의 사용량은 사용 용도에 따라 수지 조성물을 기준으로 대략 10~15 중량% 정도로 혼합하는 것이 적합하고, 습도가 높은 곳에는 15~20 중량% 정도 혼합하는 것이 방수층 표면의 평활성 측면에서 적합한 것으로 연구되었다.Next, the polybutyl acrylic acid copolymer (C) mixed in the resin composition is used as an adhesive, which has an effect of preventing cracks on the surface while imparting some elasticity to the waterproof surface. The amount of the copolymer (C) is suitably mixed in an amount of about 10 to 15% by weight based on the resin composition depending on the intended use, and mixing in an environment where the humidity is high is about 15 to 20% by weight in terms of the smoothness of the surface of the waterproof layer. Studyed as appropriate.
상기 폴리부틸 아크릴산 공중합체(C)는 폴리부틸 아크릴산 호모중합체 13.5 중량%, 폴리에틸 아크릴산 호모중합체 8.5 중량%, 폴리스틸렌 호모중합체 5.2 중량%, 폴리아크릴산 호모중합체 1.3 중량%의 비율로 물에 의해 유화 중합되어 이루어지는 공중합체로서, 수용성이고 내화성, 내수용성, 내마모성, 내유성, 자외선 저항성 등이 우수하다.The polybutyl acrylic acid copolymer (C) is emulsion-polymerized with water at a ratio of 13.5% by weight polybutyl acrylic acid homopolymer, 8.5% by weight polyethyl acrylic acid homopolymer, 5.2% by weight polystyrene homopolymer, and 1.3% by weight polyacrylic acid homopolymer. The copolymer is water-soluble and excellent in fire resistance, water resistance, abrasion resistance, oil resistance, ultraviolet resistance, and the like.
본 발명에 따르는 콘크리트 구조물용 수용성 도막방수제의 제조방법은 상기 (A)+(B)+(C)로 구성되는 수지 조성물을 혼합용기에 투입하고, 상기 혼합용기를 100∼300 rpm의 회전속도로 1~3 시간 동안 교반시켜 고형분 함량 40~60 %, 점도 5,000∼10,000 cps가 되도록 혼합하는 제2단계로 제조되는바, 상기 방수제의 점도는 콘크리트 표면의 온도와 습도 및 기온의 변화에 맞추어 그 범위로 조정하는 것은 작업성 및 부착성 등을 고려해 볼 때 바람직하다.Method for producing a water-soluble coating waterproofing agent for a concrete structure according to the invention is to put the resin composition consisting of (A) + (B) + (C) in a mixing vessel, the mixing vessel at a rotational speed of 100 ~ 300 rpm It is prepared in a second step of mixing for 1 to 3 hours and mixing the mixture so that the solid content is 40 to 60% and the viscosity is 5,000 to 10,000 cps. The viscosity of the waterproofing agent is in accordance with the change in temperature and humidity and temperature of the concrete surface It is preferable to adjust the pressure in consideration of workability and adhesion.
이상에서 살펴본 바와 같이 본 발명은 수많은 실험을 거쳐 완성되었으나, 이하에서는 당업자가 용이하게 이해하고 실시할 수 있을 정도의 바람직한 실시예를 통하여 본 발명을 설명한다.As described above, the present invention has been completed through numerous experiments. Hereinafter, the present invention will be described through preferred embodiments to be easily understood and implemented by those skilled in the art.
실시예 1Example 1
수용성 에틸렌 비닐아세트산 기상공중합체 50 중량부에 수용성 아크릴 에멀젼 수지 30 중량부 및 폴리부틸 아크릴산 공중합체 20 중량부의 비율로 첨가한 수지 조성물을 형성하고 가소제와 함께 믹서기에 투입한 후, 상온에서 점도 7,000 cps에 도달할 때까지 약 2시간 동안 200rpm의 회전속도로 교반 혼합시켜 균일한 수용성 도막방수제를 제조하였다.A resin composition was added to 50 parts by weight of a water-soluble ethylene vinylacetic gas phase copolymer in a ratio of 30 parts by weight of a water-soluble acrylic emulsion resin and 20 parts by weight of a polybutyl acrylic acid copolymer, added to a blender with a plasticizer, and then viscosity at room temperature to 7,000 cps. A uniform water-soluble coating waterproofing agent was prepared by stirring and mixing at a rotational speed of 200 rpm for about 2 hours until reaching.
실시예 2Example 2
상기 실시예 1과 동일한 방법으로 수용성 도막방수제를 제조하되, 다만 수지 조성물의 함량을 수용성 에틸렌 비닐아세트산 기상공중합체 60 중량부에 수용성 아크릴 에멀젼 수지 30 중량부 및 폴리부틸 아크릴산 공중합체 10 중량부로 조성하였다.A water-soluble coating film waterproofing agent was prepared in the same manner as in Example 1, except that the resin composition was composed of 30 parts by weight of a water-soluble acrylic emulsion resin and 10 parts by weight of a polybutyl acrylic acid copolymer. .
실시예 3Example 3
상기 실시예 1과 동일한 방법으로 수용성 도막방수제를 제조하되, 다만 수지 조성물의 함량을 수용성 에틸렌 비닐아세트산 기상공중합체 60 중량부에 수용성 아크릴 에멀젼 수지 20 중량부 및 폴리부틸 아크릴산 공중합체 20 중량부로 조성하였다.A water-soluble coating film waterproofing agent was prepared in the same manner as in Example 1, except that the resin composition was composed of 20 parts by weight of a water-soluble acrylic emulsion resin and 20 parts by weight of a polybutyl acrylic acid copolymer. .
실험예Experimental Example
상기 실시예 1∼3에 따라 제조된 도막방수제와 시중에 유통되는 제품으로 고무아스팔트계 도막방수제와 용제형 우레탄계 도막방수제를 비교하여 인장강도, 신장율, 부착강도, 내화학성, 표면 평활성 및 작업성에 대하여 측정하여 그 결과를 다음 표 1에 나타내었다.Comparison of rubber asphalt coating film waterproofing agent and solvent type urethane coating film waterproofing agent with the coating film waterproofing agent prepared according to Examples 1 to 3 and commercially available products for tensile strength, elongation rate, adhesion strength, chemical resistance, surface smoothness and workability The results are shown in Table 1 below.
여기서, 인장강도 및 부착강도는 ASTM D 638-91 및 ASTM D 4541-89 방법에 의거 측정하였고, 신장율은 ASTM D638-91 방법에 따라 측정하였으며, 내화학성은 ASTM D 543 방법에 의거 측정하였다.Here, tensile strength and adhesion strength were measured according to ASTM D 638-91 and ASTM D 4541-89 methods, elongation was measured according to ASTM D638-91 method, and chemical resistance was measured according to ASTM D 543 method.
상기 표면 평활성에서,At the surface smoothness,
○ : 핀홀 등의 표면 불량이 발생되지 않음○: No surface defects such as pinholes
× : 핀홀 등의 표면 불량이 미세하게 발생X: Fine surface defects, such as a pinhole, generate | occur | produce finely
상기 표 1의 결과로부터 본 발명의 수용성 도막방수제는 기존 유성제품에 비하여 인장강도, 신장율, 부착강도, 내화학성 및 표면 평활성이 전반적으로 양호하고, 주변 온도의 영향을 받지 않고 저온이나 고온에서도 작업이 가능하며, 유기용제에 의한 유해성이 전혀 없다는 것을 알 수 있다.From the results of Table 1, the water-soluble coating waterproofing agent of the present invention is generally good in tensile strength, elongation rate, adhesion strength, chemical resistance and surface smoothness, compared to the existing oil-based products, and work at low or high temperatures without being affected by the ambient temperature. It can be seen that there is no harm caused by organic solvents.
위와 같이, 본 발명의 수용성 도막방수제는 콘크리트 구조물의 크랙에 강한 저항성을 나타낼 수 있기 때문에 장기간 동안 방수성능이 저하되지 않을 뿐만 아니라 옥상정원, 지하주차장, 건축 및 토목구조물의 바닥면이나 내외 벽체, 수영장, 물탱크 등 다양한 용도의 도막방수제로 사용될 수 있다.As described above, since the water-soluble coating waterproofing agent of the present invention can exhibit a strong resistance to cracks of concrete structures, the waterproof performance does not deteriorate for a long period of time, but also the floor or interior walls of roof gardens, underground parking lots, construction and civil structures, swimming pools. It can be used as a film waterproofing agent for various purposes such as water tank, etc.
Claims (4)
상기 폴리부틸 아크릴산 공중합체(C)는, 폴리부틸 아크릴산과 폴리에틸 아크릴산, 폴리스틸렌, 폴리아크릴산이 물과 유화 중합되어 이루어지는 것을 특징으로 하는 콘크리트 구조물용 수용성 도막방수제.The method of claim 1,
The polybutyl acrylic acid copolymer (C) is a water-soluble coating film waterproofing agent for concrete structures, wherein polybutyl acrylic acid, polyethyl acrylic acid, polystyrene, and polyacrylic acid are emulsion-polymerized with water.
상기 혼합용기를 100∼300 rpm의 회전속도로 1~3 시간 동안 교반시켜 점도 5,000∼10,000 cps가 되도록 혼합하는 제2단계;
로 제조되는 것을 특징으로 하는 콘크리트 구조물용 수용성 도막방수제의 제조방법.(A) 50 to 60% by weight of water-soluble ethylene vinylacetic gas phase copolymer, (B) 20 to 30% by weight of water-soluble acrylic emulsion resin, (C) 10 to 20% by weight of polybutyl acrylic acid copolymer, and a solid content A first step of injecting the 40-60% resin composition into the mixing container;
A second step of mixing the mixing vessel to a viscosity of 5,000 to 10,000 cps by stirring for 1 to 3 hours at a rotational speed of 100 to 300 rpm;
Method for producing a water-soluble coating waterproofing agent for a concrete structure, characterized in that it is produced by.
상기 폴리부틸 아크릴산 공중합체(C)는, 폴리부틸 아크릴산과 폴리에틸 아크릴산, 폴리스틸렌, 폴리아크릴산이 물과 유화 중합되어 이루어지는 것을 특징으로 하는 콘크리트 구조물용 수용성 도막방수제의 제조방법.The method of claim 3,
The polybutyl acrylic acid copolymer (C) is a method for producing a water-soluble coating waterproofing agent for concrete structures, wherein polybutyl acrylic acid, polyethyl acrylic acid, polystyrene, and polyacrylic acid are emulsion polymerized with water.
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| CN104277640A (en) * | 2014-10-29 | 2015-01-14 | 安徽朗凯奇建材有限公司 | Thermal insulating waterproof coating for roofs and preparation method thereof |
| KR20230139936A (en) | 2022-03-28 | 2023-10-06 | 주식회사 우림테크 | Eco-friendly waterproof coating composition having air permeability comprising mesoporous silica materials coated by fluorosurfactants |
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