KR100988553B1 - Compositions for reinforcing pile and coating method using the same - Google Patents
Compositions for reinforcing pile and coating method using the same Download PDFInfo
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- KR100988553B1 KR100988553B1 KR1020080033373A KR20080033373A KR100988553B1 KR 100988553 B1 KR100988553 B1 KR 100988553B1 KR 1020080033373 A KR1020080033373 A KR 1020080033373A KR 20080033373 A KR20080033373 A KR 20080033373A KR 100988553 B1 KR100988553 B1 KR 100988553B1
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
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- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
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- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
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- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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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
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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
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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Abstract
본 발명은 토공사 및 철도역사, 철탑기초, 항만, 대교, 댐, 신축 증축 과정에 있어서 천공 후 마이크로 파일의 삽입시 콘크리트와의 부착성과 파일 외면에 부식에 대한 방청성이 현저하게 저하되는 문제점을 해결하기 위한 것으로서, 파일 표면에 코팅하기 위한 파일 보강용 조성물로서, 에폭시 수지, 에폭시 경화제, 경화 촉진제, 무기충진제, 착색안료 및 첨가제를 포함하고, 상기 에폭시수지 100중량부에 대하여, 에폭시 경화제는 5 ~ 60중량부, 상기 경화 촉진제는 0.1 ~ 5중량부, 상기 무기충진제는 5 ~ 60중량부, 상기 착색안료는 5 ~ 60중량부 및 상기 첨가제는 0.1 ~ 10중량부를 포함하는 파일 보강용 조성물 및 그의 도장방법에 관한 것이다.The present invention is to solve the problem that the adhesion to concrete and the corrosion resistance to corrosion on the outer surface of the pile significantly reduced when the micro pile is inserted after drilling in earthworks and railway history, iron tower foundation, harbor, bridge, dam, expansion and expansion process As a composition for pile reinforcement for coating on a pile surface, comprising an epoxy resin, an epoxy curing agent, a curing accelerator, an inorganic filler, a coloring pigment, and an additive, and with respect to 100 parts by weight of the epoxy resin, the epoxy curing agent is 5 to 60 Part by weight, the curing accelerator is 0.1 to 5 parts by weight, the inorganic filler is 5 to 60 parts by weight, the coloring pigment is 5 to 60 parts by weight and the additive is 0.1 to 10 parts by weight of the pile reinforcement composition and its coating It is about a method.
본 발명에 의하면, 파일의 방청성, 부착성, 충격성, 내구성을 크게 향상시키는 친환경적 무공해의 파일 보강용 조성물을 제공할 수 있다. 또한, 천공 후 마이크로파일을 삽입하는 과정에 코팅한 파일을 보호할 수 있도록 하여 시공자에게 신뢰성을 제공할 수 있는 파일 보강용 조성물을 제공하는 효과를 갖는다. According to the present invention, it is possible to provide an environment-friendly, pollution-free pile reinforcing composition which greatly improves the rust resistance, adhesion, impact resistance and durability of the pile. In addition, it is possible to protect the coated file in the process of inserting the micropile after drilling has the effect of providing a composition for pile reinforcement that can provide reliability to the contractor.
파일 보강 조성물, 에폭시, 코팅, 분체도료 Pile reinforcement composition, epoxy, coating, powder coating
Description
본 발명은 파일 보강용 조성물에 관한 것이다. 보다 구체적으로 본 발명은 토공사 및 철도역사, 철탑기초, 항만, 대교, 댐, 신축 증축의 지반을 보강하기 위해 삽입하는 마이크로 파일의 외부표면을 코팅하는 파일 보강용 조성물 및 그의 도장방법에 관한 것이다.The present invention relates to a composition for pile reinforcement. More specifically, the present invention relates to a composition for reinforcing piles and coating methods thereof, which coats an external surface of a micropile inserted to reinforce the ground of earthworks and railway stations, steel tower foundations, ports, bridges, dams, and expansions.
토공사 및 철도역사, 철탑기초, 항만, 대교, 댐 또는 신축증축 과정에서 지반이 약한 곳은 천공 후 마이크로 파일(보강용 파일)을 삽입한다. 이때, 그라우팅 과정시 파일 외부표면에 코팅이 적합지 못하거나 부실한 경우 콘크리트와의 부착성과 파일 외면에 부식에 대한 방청성이 현저하게 저하된다.After drilling, insert micro piles (reinforcement piles) in the ground where the soil is weak during earthworks, railway history, steel tower foundations, ports, bridges, dams, or expansions. At this time, when the coating is not suitable or poor on the pile outer surface during the grouting process, the adhesion to concrete and the corrosion resistance to corrosion on the outer surface of the pile are significantly reduced.
상기의 문제점을 해결하기 위해 종래에는 분체도료(예를 들면, 조광페인트(주) 제의 제품명 POWLAC EY171)를 사용하였으나 코팅하는 부분의 피막층이 불규칙하여 코팅부가 깨지거나 손실됨으로써 방청성, 부착성이 현저히 저하되었다. 이에 따라, 파일에 실효성이 없고 부식 속도가 급진행된다는 문제점을 지니고 있다. In order to solve the above problems, powder coating (for example, product name POWLAC EY171 manufactured by Kwang Dye Paint Co., Ltd.) was used, but the coating part is irregularly coated, so that the coating part is broken or lost. Degraded. Accordingly, there is a problem that the pile is ineffective and the corrosion rate is rapidly advanced.
본 발명은 상기의 제반 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 토공사 및 철도역사, 철탑기초, 항만, 대교, 댐, 신축 증축 과정에 있어서 천공 후 삽입되는 파일의 표면에 코팅되어 파일의 방청성, 부착성, 충격성, 내구성을 크게 향상시키는 파일 보강용 조성물을 제공하기 위한 것이다.The present invention is to solve the above problems, an object of the present invention is coated on the surface of the pile to be inserted after drilling in earthwork and railway station, iron tower foundation, harbor, bridge, dam, expansion and expansion process, the rust resistance of the pile To provide a composition for reinforcing piles that greatly improves adhesion, impact properties, and durability.
본 발명의 다른 목적은 친환경적인 무공해 분체도료로서 마이크로 파일에 적용하기 적합한 파일 보강용 조성물을 제공하기 위한 것이다. Another object of the present invention is to provide a composition for reinforcing piles suitable for application to micro piles as an environmentally friendly, pollution-free powder coating.
본원발명은 상기의 과제를 해결하기 위한 것으로, 마이크로 파일 표면에 코팅하기 위한 파일 보강용 도료 조성물로서, 비스페놀 F형 에폭시 수지, 에폭시 경화제, 경화 촉진제, 무기충진제, 착색안료 및 첨가제를 포함하며, 상기 첨가제는 분산제, 웨팅제(wetting agent), 광택조절제, 접착력을 향상시키는 첨가제, 난연제, 핀홀방지제 및 크래터링 방지제를 포함하여 이루어진 군에서 하나 또는 그 이상을 조합하여 이루어지며, 상기 에폭시수지는 비스페놀 F형 에폭시 수지이고, 에폭시 당량이 600 내지 2000g/eq인 상기 비스페놀 F형 에폭시 수지 100중량부에 대해, 에폭시 당량이 30 내지 700g/eq인 상기 에폭시 경화제는 5 ~ 60중량부, 상기 경화 촉진제는 0.1 ~ 5중량부, 상기 무기충진제는 5 ~ 60중량부, 상기 착색안료는 5 ~ 60중량부 및 상기 첨가제는 0.1 ~ 10중량부를 포함하는 파일 보강용 도료 조성물.를 포함하는 파일 보강용 조성물을 제공한다.The present invention is to solve the above problems, a coating composition for reinforcing piles for coating on the surface of the micro pile, including bisphenol F-type epoxy resin, epoxy curing agent, curing accelerator, inorganic filler, coloring pigment and additives, The additive is a combination of one or more of the group consisting of a dispersing agent, a wetting agent, a gloss adjusting agent, an additive to improve adhesion, a flame retardant, a pinhole inhibitor and an anti-crattering agent, wherein the epoxy resin is bisphenol F 5 to 60 parts by weight of the epoxy curing agent having an epoxy equivalent weight of 30 to 700 g / eq to 100 parts by weight of the bisphenol F type epoxy resin having an epoxy equivalent of 600 to 2000 g / eq. To 5 parts by weight, the inorganic filler is 5 to 60 parts by weight, the coloring pigment is 5 to 60 parts by weight and the additive contains 0.1 to 10 parts by weight. Which provides for file reinforcing composition comprising a coating composition. File for reinforcement.
전술한 바와 같이 본 발명에 따르면, 토공사 및 철도역사, 철탑기초, 항만, 대교, 댐, 신축 증축 과정에 있어서 천공 후 삽입되는 파일의 표면에 코팅되어 파일의 방청성, 부착성, 충격성, 내구성을 크게 향상시키는 친환경적 무공해의 파일 보강용 조성물을 제공할 수 있다. 또한, 천공 후 마이크로파일을 삽입하는 과정에 코팅한 파일을 보호할 수 있도록 하여 시공자에게 신뢰성을 제공할 수 있는 파일 보강용 조성물을 제공한다. As described above, according to the present invention, in the earthwork and railway history, iron tower foundation, harbor, bridge, dam, expansion and expansion process is coated on the surface of the pile to be inserted after drilling to greatly increase the rust resistance, adhesion, impact, durability of the pile It is possible to provide an environmentally friendly, pollution-free pile reinforcing composition. In addition, it provides a composition for reinforcing piles that can provide a reliability to the contractor to protect the coated pile in the process of inserting the micropile after drilling.
본 발명은 파일 표면에 코팅되어 파일을 보강하는 파일 보강용 조성물을 제공한다.The present invention provides a composition for reinforcing piles coated on the surface of a pile to reinforce the pile.
보다 구체적으로, 상기 파일 보강용 조성물은 파일 표면에 코팅하기 위한 파일 보강용 조성물로서,에폭시 경화제, 경화 촉진제, 무기충진제, 착색안료 및 첨가제를 포함한다. 그리고, 이를 구현하기 위한 바람직한 실시예로서, 각 조성물의 성분비는 다음과 같다. 본 발명은 에폭시 당량이 600 내지 2000g/eq인 비스페놀 F형 에폭시 수지 100중량부에 대해, 에폭시 당량이 30 내지 700g/eq인 에폭시 경화제는 5 ~ 60중량부, 상기 경화 촉진제는 0.1 ~ 5중량부, 상기 무기충진제는 5 ~ 60중량부, 상기 착색안료는 5 ~ 60중량부 및 상기 첨가제는 0.1 ~ 10중량부를 포함한다. 그리고, 이와 같은 조성으로 열경화형 비스페놀 F형 에폭시 분체도료 조성물로 구현된다. More specifically, the pile reinforcing composition is a composition for pile reinforcement for coating on the surface of the pile, and includes an epoxy curing agent, a curing accelerator, an inorganic filler, a coloring pigment, and an additive. And, as a preferred embodiment for implementing this, the component ratio of each composition is as follows. The present invention is based on 100 parts by weight of bisphenol F type epoxy resin having an epoxy equivalent of 600 to 2000 g / eq, 5 to 60 parts by weight of an epoxy curing agent having an epoxy equivalent of 30 to 700 g / eq, and 0.1 to 5 parts by weight of the curing accelerator. 5 to 60 parts by weight of the inorganic filler, 5 to 60 parts by weight of the coloring pigment and 0.1 to 10 parts by weight of the additive. In addition, such a composition is implemented as a thermosetting bisphenol F-type epoxy powder coating composition.
그리고, 상기 첨가제는 분산제, 웨팅제(wetting agent), 광택 조절제, 접착력을 향상시키기 위한 첨가제, 난연제, 핀홀 방지제, 크래터링 방지제 및 이들의 혼합물로 이들의 조합으로 이루어진 군에서 1종을 선택하여 이루어진다. The additive is selected from the group consisting of a dispersant, a wetting agent, a gloss regulator, an additive for improving adhesion, a flame retardant, a pinhole inhibitor, an anti-crattering agent, and a mixture thereof. .
상기한 본 발명에 따른 조성물에 사용하는 에폭시 수지는 하기 화학식 1로 표시되는 비스페놀 F형 에폭시 수지를 사용한다.As the epoxy resin used in the composition according to the present invention described above, a bisphenol F-type epoxy resin represented by the following general formula (1) is used.
(화학식 1)(Formula 1)
(상기 화학식 1에서 n은 1내지 10의 정수이다)(N in Formula 1 is an integer of 1 to 10)
그리고, 화학식 1에 나타낸 비스페놀 F형 에폭시 수지는 디페닐로이탄(diphenylomethane)과 에피클로로히드린(epichlorohydrin)과의 축합 반응에 의해 생산되는 디글리시딜 에테르(diglycidyl ether)형의 에폭시 수지이다.In addition, the bisphenol F-type epoxy resin shown in Formula 1 is a diglycidyl ether type epoxy resin produced by condensation reaction of diphenylomethane and epichlorohydrin.
그리고, 비스페놀 F형 에폭시 수지는 비스페놀 A형의 분자 가운데 메탈기(-CH3) 대신에 수소(H)가 있는 수지로 비스페놀 A형에 비해 저점도이며 고반응성이다. 또한, 다른 수지와 상용성이 우수하며, 저온 경화성, 내화학적 물성, 내식성이 우수하고 기소성 또한 우수하다. 아울러 종래 환경 유해성 논란이 있는 비스페놀 A형을 포함하고 있지 않다.The bisphenol F type epoxy resin is a resin having hydrogen (H) instead of the metal group (-CH 3 ) among the molecules of the bisphenol A type, and has a lower viscosity and higher reactivity than the bisphenol A type. In addition, it is excellent in compatibility with other resins, excellent in low-temperature curing, chemical resistance, corrosion resistance and excellent plasticity. In addition, it does not contain a bisphenol A type which has a conventional environmental hazard controversy.
이와 같이 이루어지는 본 발명에 따른 파일 보강용 코팅제는 특수한 에폭시 수지와 경화제를 포함하여 이루어지는 열경화성 분체도료로서, 환경에 대한 방청성, 약품성, 부착성, 충격성이 탁월하다. 또한, 상기 코팅제는 콘크리트와 동일한 성분의 Filler(체질안료) PTGMENT(안료)를 배합 응용하여 콘크리트와의 부착 성능을 극대화시킨 친환경, 무공해 분체도료로서 마이크로파일에 적용하기에 적합하다.The coating agent for pile reinforcement according to the present invention thus formed is a thermosetting powder coating comprising a special epoxy resin and a curing agent, and is excellent in rust prevention, chemical resistance, adhesion and impact against the environment. In addition, the coating agent is applied to the micro pile as an environmentally friendly, pollution-free powder coating that maximizes the adhesion performance with concrete by applying the filler (sieve pigment) PTGMENT (pigment) of the same composition as the concrete.
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그리고, 본 발명은 피도체를 전처리하는 단계, 전처리된 피도체를 예열하는 단계, 상기 비스페놀 F형 에폭시 분체도료 조성물을 예열된 피도체에 정전 스프레이 도장 및 경화하는 단계, 및 피도체를 냉각시키는 단계를 포함하는 비스페놀 F형 에폭시 분체도료 도장 방법을 제공한다.In addition, the present invention comprises the steps of pretreatment of the subject, preheating the pretreated subject, electrostatic spray coating and curing the bisphenol F-type epoxy powder coating composition to the preheated subject, and cooling the subject It provides a bisphenol F-type epoxy powder coating coating method comprising a.
이와 같이 본 발명에 따른 파일 보강용 조성물을 이용한 보강용 파일의 표면 도장으로 다음과 같은 특징을 구비하게 된다. Thus, the surface of the reinforcement pile using the composition for pile reinforcement according to the present invention is provided with the following characteristics.
첫째, 도막 형성의 특성으로서, 보강용 파일(마이크로 파일)은 표면에 일정한 크기와 간격으로 돌기나 나선을 가지고 있기 때문에 적절한 두께로 도장하기가 어렵다. 그러나 본 발명의 기술구현으로 표면 코팅제에 우수한 에지 커버링(Edge-Covering)특성이 향상되고, 핀홀(pinhole)의 형성이 최소화된다.First, as a characteristic of coating film formation, reinforcing piles (micro piles) have projections or spirals on the surface at regular sizes and intervals, so that it is difficult to coat them to an appropriate thickness. However, the technical implementation of the present invention improves the edge-covering characteristics excellent in the surface coating, and minimizes the formation of pinholes.
둘째, 표면 손상에 대한 저항성 향상으로서, 보강용 파일(마이크로 파일)은 수송 과정이나 설치 과정, 콘크리트 충진 과정 등과 같은 건설 현장에서 매우 가혹한 조건에 노출된다. 그러나 본 발명에 따른 파일 보강용 조성물의 표면도장으로 인해 우수한 내충격성, 내마모성, 강한 경도의 물성이 부여된다.Secondly, as the resistance to surface damage is improved, reinforcement piles (micro piles) are exposed to very harsh conditions in construction sites such as transportation, installation, and concrete filling. However, due to the surface coating of the pile reinforcing composition according to the present invention, excellent impact resistance, abrasion resistance, and strong hardness are imparted.
세째, 매설 환경에 대한 저항성 향상으로서, 보강용 파일(마이크로 파일)이 매설되었을 경우 코팅 도막은 다량의 습기와 알카리성의 환경에 접하게 된다. 그러 나 본 발명에 따른 기술구현으로, 탁월한 내수성, 내알칼리성 뿐만 아니라 파일과의 강한 부착성이 요구되며 특히 콘크리트와 코팅 도막 사이의 결합력도 유지된다. Third, to improve the resistance to the buried environment, when the reinforcing pile (micro pile) is embedded, the coating film is in contact with a large amount of moisture and alkaline environment. However, with the technical implementation according to the present invention, excellent water resistance, alkali resistance as well as strong adhesion to the pile is required, in particular the bonding force between the concrete and the coating film is also maintained.
또한, 본 발명에 따른 조성물은 열경화형 비스페놀 F형 분체도료 조성물로서, 상기 조성물 FBE(fusion bonded epoxy) 도장 공정을 이용하여 마이크로 파일, 피팅(fitting)류 외부 표면에 사용이 가능하며 도막 형성 후 피도체와의 부착성, 내충격성, 내음극 박리성, 내화학성 등의 물성이 뛰어날 뿐만 아니라 도막의 용출 시험에서도 환경유해한 성분이 전혀 검출되지 않는다는 이점이 있다.In addition, the composition according to the present invention is a thermosetting bisphenol F-type powder coating composition, which can be used on the outer surface of micro piles and fittings using the composition FBE (fusion bonded epoxy) coating process, In addition to excellent physical properties such as adhesion to the conductor, impact resistance, negative electrode peel resistance and chemical resistance, there is an advantage that no harmful components are detected even in the dissolution test of the coating film.
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| KR20190089284A (en) | 2018-01-22 | 2019-07-31 | 이종우 | Reinforcement pile with fiber sheet for ground improvement and earthquake-proof |
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| KR20040070613A (en) * | 2003-02-04 | 2004-08-11 | 주식회사 금강고려화학 | Rough fusion bonded epoxy Anti-Slip-coating for concrete coated pipeline |
| KR200408009Y1 (en) * | 2005-09-14 | 2006-02-07 | (주)용마공영 | Thread Bar for Anchor Pile |
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| KR20040070613A (en) * | 2003-02-04 | 2004-08-11 | 주식회사 금강고려화학 | Rough fusion bonded epoxy Anti-Slip-coating for concrete coated pipeline |
| KR200408009Y1 (en) * | 2005-09-14 | 2006-02-07 | (주)용마공영 | Thread Bar for Anchor Pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20190089284A (en) | 2018-01-22 | 2019-07-31 | 이종우 | Reinforcement pile with fiber sheet for ground improvement and earthquake-proof |
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