KR101127414B1 - Corrugated Steel Pipe Coated With Acryl Urethane - Google Patents

Corrugated Steel Pipe Coated With Acryl Urethane Download PDF

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KR101127414B1
KR101127414B1 KR1020090090880A KR20090090880A KR101127414B1 KR 101127414 B1 KR101127414 B1 KR 101127414B1 KR 1020090090880 A KR1020090090880 A KR 1020090090880A KR 20090090880 A KR20090090880 A KR 20090090880A KR 101127414 B1 KR101127414 B1 KR 101127414B1
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steel pipe
corrugated steel
weight
acrylic
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KR1020090090880A
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KR20110033396A (en
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박상표
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주식회사 동연
(주) 영신
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal
    • 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
    • B05D7/14—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 to metal, e.g. car bodies
    • B05D7/146—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 to metal, e.g. car bodies to metallic pipes or tubes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—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 a salt, anhydride ester, amide, imide or nitrile thereof
    • 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
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • 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
    • B05D2254/00—Tubes
    • B05D2254/04—Applying the material on the interior of the tube
    • B05D2254/06—Applying the material on the interior and exterior of the tube
    • 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
    • B05D2502/00—Acrylic polymers

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

본 발명은 아연도금 파형강관의 내?외면을 아크릴우레탄으로 코팅한 것으로서, 내산성, 내알카리성, 내염수성 및 내수성이 공히 우수한 파형강관에 관한 것임.The present invention is a coating of the inner and outer surfaces of the galvanized corrugated steel pipe with acrylic urethane, and relates to a corrugated steel pipe having excellent acid resistance, alkali resistance, saline resistance and water resistance.

본 발명은 아크릴수지를 주성분으로하는 주성분 조성물과 폴리이소시아네이트를 주성분으로하는 경화제 조성물로 구성된 2액형의 코팅재로 코팅되어서 종래의 폴리에틸렌 필름으로 융착시킨 파형강관에 비하여 화학적 내지는 물리적 내구성을 향상시킨 것임.The present invention improves chemical or physical durability compared to a corrugated steel pipe fused with a conventional polyethylene film by coating with a two-component coating material composed of a main component composition containing acrylic resin and a curing agent composition containing polyisocyanate as a main component.

아크릴우레탄 조성물, 아크릴수지, 폴리이소시아네이트, 아크릴폴리올, 파형강관 Acrylic urethane composition, acrylic resin, polyisocyanate, acrylic polyol, corrugated steel pipe

Description

아크릴우레탄으로 코팅된 파형강관 { Corrugated Steel Pipe Coated With Acryl Urethane }Corrugated Steel Pipe Coated With Acryl Urethane}

본 발명은 토목공사 또는 지하매설관로에 설치되는 아연도금 파형강관으로서 그 내?외면에 아크릴우레탄을 에어레스(air less) 혹은 에어스프레이로 코팅한 파형강관에 관한 것이다. The present invention relates to a galvanized corrugated steel pipe installed in civil engineering works or underground buried pipelines, and to corrugated steel pipes coated with airless or air sprayed with acrylic urethane on its inner and outer surfaces.

종래의 아연도금 파형강관(CSP ; Corrugated Steel Pipe)은 아스팔트 코팅이나 폴리에틸렌 필름을 융착시킨 것이 었는바 이들은 다음과 같은 단점들을 가지고 있었다. Conventional galvanized corrugated steel pipe (CSP) was a fusion of asphalt coating or polyethylene film, which had the following disadvantages.

즉, 시간이 경과함에 따라서 코팅층이 경화되어서 크랙(crack) 현상이 발생하거나, 열에 의하여 부착되었던 합성수지가 철판의 표면으로부터 박리되는 문제점이 있었으며, 또 CSP는 열에 취약하기 때문에 합성수지로 코팅할 때 가열에 의하여 철판 자체가 손상을 받기 쉬워서 작업현장에서 전기용접기나 산소용접기를 사용하지 못하고 고가의 플라즈마 용접기를 사용해야만 하는 어려움이 있었다.That is, as the time passes, the coating layer hardens, causing cracks, or the synthetic resin, which is attached by heat, is separated from the surface of the iron plate, and CSP is vulnerable to heat. Due to the steel plate itself is susceptible to damage, there was a difficulty in using an expensive plasma welding machine without using an electric welding machine or an oxygen welding machine in the workplace.

또 상술한 바와 같은 문제점을 해결할 목적으로 한국특허 제 0464727호 " 피복파형강관 성형방법 및 그에 따라 제조된 피복파형강관 " 에서는 미가류의 클로로 프렌과 폴리에스테르, 폴리비닐클로라이드, 폴리프로필렌 및 폴리에틸렌 중에서 선택된 재료로 이루어진 복합시트를 부착시켜서 된 피복파형강관을 제시하고 있는바, 상기 파형강관은 이형지 상에 클로로프렌층과 폴리에스테르층의 복합층을 형성시켜서 복합시트를 먼저 제조한 후 상기 복합시트를 강판에 부착시킨 다음에 파형강관으로 성형시키는 것이므로 제조공정이 매우 복잡해서 생산비용이 높아질수 밖에 없는 단점이 있었다. In addition, Korean Patent No. 0464727 "Coated Corrugated Steel Pipe Forming Method and Coated Corrugated Steel Pipe Made Thereby" has been selected from untreated chloroprene and polyester, polyvinyl chloride, polypropylene and polyethylene for the purpose of solving the above problems. A corrugated steel pipe made by attaching a composite sheet made of a material is proposed. The corrugated steel pipe is formed by forming a composite layer of a chloroprene layer and a polyester layer on a release paper to prepare a composite sheet first, and then attach the composite sheet to a steel sheet. After attaching to form a corrugated steel pipe, the manufacturing process is very complicated, there is a disadvantage that the production cost is high.

본 발명의 목적은 종래의 아스팔트 CSP나 폴리에틸렌수지코팅 CSP보다 내구성이 우수하며 또 복합시트를 부착한 상기 피복파형강관에 비하여 간단한 제조공정과 저렴한 비용으로 제조할 수 있는 아크릴우레탄으로 코팅된 파형강관을 제공하는데 있다. An object of the present invention is superior to the conventional asphalt CSP or polyethylene resin coated CSP, and compared to the corrugated steel pipe with a composite sheet, and to produce a corrugated steel pipe coated with acrylic urethane that can be manufactured in a simple manufacturing process and low cost To provide.

본 발명은 다음과 같은 조성으로 되어있는 아크릴우레탄을 코팅제로 사용하였다.In the present invention, acrylic urethane having the following composition was used as a coating agent.

즉, 유리전이온도(Tg)가 60~70℃이고 산가가 3~5인 아크릴수지 40~20%, 카본블랙 2~3%, 평할제, 슬립제, 증점제 및 왁스로 조성된 첨가제 5~8%, 에스테르계용제 5~8%, 케톤계용제 5~8%, 방향족계용제 10~15%, 탈크 15~17%, 탄산칼슐 17~20% 및 실란 1%(이상은 모두 중량%임)으로 조성된 주성분 조성물과, 폴리이소시아네이트 94~85%, 에스테르계용제 1~5%, 아세테이트계용제 5~10%(이상은 모두 중량%임)으로 조성된 경화제 조성물로 되어 있다. That is, additives composed of 40 to 20% of acrylic resins having a glass transition temperature (Tg) of 60 to 70 ° C and acid values of 3 to 5, 2 to 3% of carbon black, leveling agents, slip agents, thickeners and waxes %, Ester solvents 5-8%, ketone solvents 5-8%, aromatic solvents 10-15%, talc 15-17%, calcium carbonate 17-20%, and silane 1% (all above are by weight) It consists of the main component composition and the hardening agent composition comprised from 94 to 85% of polyisocyanates, 1 to 5% of ester solvents, and 5 to 10% of acetate solvents (all are by weight).

상기 아크릴우레탄의 고형분 함량은 60~80중량%이며, 바인더인 아크릴폴리올의 조성은 메틸메타아크릴레이트 25~35중량%, 하이드록시에틸메타아크릴레이트 10~15중량%, 부틸메타아크릴레이트 10~15중량%, 및 스티렌모노머 5~10중량% 등이다. The solid content of the acrylic urethane is 60 to 80% by weight, the composition of the acrylic polyol as a binder is 25 to 35% by weight methyl methacrylate, 10 to 15% by weight hydroxyethyl methacrylate, 10 to 15 butyl methacrylate % By weight, and 5 to 10% by weight of styrene monomer.

또 상기 아크릴우레탄은 아크릴폴리올의 수산기와 이소시아네이트의 당량비 가 0.8~1.2인 2액형 아크릴우레탄이다. Moreover, the said acrylurethane is a two-component acrylurethane whose equivalent ratio of the hydroxyl group and isocyanate of an acryl polyol is 0.8-1.2.

본 발명에 따르는 파형강관은 도막의 부착성이 우수하고 물리적 변형에 대한 균열이나 변색이 없으며, 경화된 도막은 아크릴수지의 특징으로 말미암아 내수성과 내마모성이 우수하고 특히 내약품성이 우수하므로 산, 알카리 또는 염분 등을 함유하는 오?폐수에 대하여 높은 저항성을 가지므로 지하에 매설하는 아연도금파형강관의 수명을 크게 연장시킬 수 있다. Corrugated steel pipe according to the present invention is excellent in adhesion of the coating film, there is no crack or discoloration to physical deformation, and the cured coating film is excellent in water resistance and abrasion resistance due to the characteristics of acrylic resin, and especially excellent in chemical resistance, so that the acid, alkali or Since it has high resistance to the wastewater containing salt, etc., the life of galvanized corrugated steel pipe buried underground can be greatly extended.

또 본 발명에 따르는 파형강관은 도막을 형성 시킬때 살오름성과 도장작업성이 우수하고 속건성이므로 도장작업시간을 단축시킬 수 있다. In addition, the corrugated steel pipe according to the present invention can shorten the painting work time because it is excellent in the rise and painting workability and quick drying when forming the coating film.

그 결과, 생산원가가 저렴한 아크릴우레탄 도막의 파형강관을 제공할 수 있다. As a result, it is possible to provide a corrugated steel pipe of an acrylic urethane coating film having a low production cost.

유리전이온도가 60~70℃이고 산가가 4인 아크릴수지 28%, 카본블랙 2%, 평할제, 슬립제, 증점제 및 왁스로 조성된 첨가제 10%, 에스테르계용제 11%, 케톤계용제 7%, 방향족계용제 13%, 탈크 10%, 탄산칼슘 18% 및 실란 1%(이상은 모두 중량%임)을 함유하는 주성분 조성물과 폴리이소시아네이트 90%, 에스테르계용제 5% 및 아세테이트계용제 5%(이상은 모두 중량%임)를 함유하는 경화제 조성물을 양자조성물의 무게비가 10:1이 되도록 혼합한 후 신나로 희석하여 에어스프레이를 사용하여 아연도금파형강관의 내?외면에 분무시킨 후 80℃의 온도에서 30분간 자연건조시켜서 건조도막의 두께가 520㎛이 되도록 하였다. 28% acrylic resin having a glass transition temperature of 60 to 70 ° C and an acid value of 4, carbon black 2%, additives composed of a leveling agent, slip agent, thickener and wax 10%, ester solvent 11%, ketone solvent 7% , Main component composition containing 13% of aromatic solvent, 10% of talc, 18% of calcium carbonate and 1% of silane (all are by weight), 90% of polyisocyanate, 5% of ester solvent, and 5% of acetate solvent ( The above is all by weight) of the curing agent composition is mixed so that the weight ratio of the quantum composition is 10: 1, diluted with thinner and sprayed on the inner and outer surfaces of the galvanized corrugated steel pipe using an air spray to 80 ℃ After drying for 30 minutes at a temperature, the thickness of the dry coating film was 520㎛.

삭제delete

상기 아크릴우레탄으로 코팅된 파형강관을 시험한 결과는 표 1과 같다. Test results of the corrugated steel pipe coated with the acrylic urethane are shown in Table 1.

< 표 1><Table 1>

Figure 112009058976323-pat00001
Figure 112009058976323-pat00001

※ 촉진내후성시험조건※ Accelerated weathering test conditions

Light Source : 6500W Xenon Arc,Irradiance : 0.35W/㎡   Light Source: 6500W Xenon Arc, Irradiance: 0.35W / ㎡

B.P.T. : 63℃±3℃ , Humidity : 50%±5% RH,   B.P.T. : 63 ℃ ± 3 ℃, Humidity: 50% ± 5% RH,

Inner/Outer Filter : Borosilicate/Borosilicate,   Inner / Outer Filter: Borosilicate / Borosilicate,

Spray Cycle : 18min/120min, Exposure Time : 100h   Spray Cycle: 18min / 120min, Exposure Time: 100h

시험기관 : 한국화학시험연구원   Test Agency: Korea Testing and Research Institute

시험일자 : 2009년 03월 27일   Test Date: March 27, 2009

Claims (4)

유리전이온도(Tg)가 60~70℃이고, 산가가 3~5인 아크릴수지 20~40중량%, 카본블랙 2~3중량%, 평할제, 슬립제, 증점제 및 왁스로 조성된 첨가제 5~8중량%, 에스테르계용제 5~8중량%, 케톤계용제 5~8중량%, 방향족계용제 10~15중량%, 탈크 15~17중량%, 탄산칼슘 17~20중량% 및 실란 1중량%로 조성된 주성분 조성물과, 폴리이소시아네이트 85~94중량%, 에스테르계용제 1~5중량% 및 아세테이트계용제 5~10중량%로 조성된 경화제 조성물을 혼합하여 도막을 형성시킨 것을 특징으로 하는 아크릴우레탄으로 코팅된 파형강관.20 ~ 40% by weight of acrylic resin having a glass transition temperature (Tg) of 60 to 70 ° C and an acid value of 3 to 5, 2 to 3% by weight of carbon black, and an additive composed of a leveling agent, a slip agent, a thickener and a wax. 8 wt%, ester solvent 5-8 wt%, ketone solvent 5-8 wt%, aromatic solvent 10-15 wt%, talc 15-17 wt%, calcium carbonate 17-20 wt% and silane 1 wt% Acrylurethane, characterized in that the coating composition was formed by mixing the main component composition, and the curing agent composition composed of 85 to 94% by weight of polyisocyanate, 1 to 5% by weight of ester solvent and 5 to 10% by weight of acetate solvent. Corrugated steel pipe 삭제delete 제 1항에 있어서, 주성분 조성물과 경화제 조성물의 혼합비율은 무게비로 10:1 임을 특징으로 하는 아크릴우레탄으로 코팅된 파형강관.The corrugated steel pipe coated with acrylic urethane according to claim 1, wherein the mixing ratio of the main component composition and the curing agent composition is 10: 1 by weight. 삭제delete
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