KR20080070304A - Nano silver coating iron pipe for water supply - Google Patents

Nano silver coating iron pipe for water supply Download PDF

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Publication number
KR20080070304A
KR20080070304A KR1020070008216A KR20070008216A KR20080070304A KR 20080070304 A KR20080070304 A KR 20080070304A KR 1020070008216 A KR1020070008216 A KR 1020070008216A KR 20070008216 A KR20070008216 A KR 20070008216A KR 20080070304 A KR20080070304 A KR 20080070304A
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South Korea
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synthetic resin
silver
iron pipe
cast iron
pipe
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KR1020070008216A
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Korean (ko)
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박진만
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케이더불유피티 주식회사
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Priority to KR1020070008216A priority Critical patent/KR20080070304A/en
Priority to CNA200810001166XA priority patent/CN101230946A/en
Priority to JP2008014663A priority patent/JP2008215618A/en
Publication of KR20080070304A publication Critical patent/KR20080070304A/en

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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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/08—Coatings characterised by the materials used by metal
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

An iron pipe coated with nano-silver for water supply is provided to prevent noxious germ from being generated in water flowing the pipe by performing a lining treatment with respect to the pipe using synthetic resin containing nano-silver particles on the pipe and then coating the pipe with nano-silver particles. An iron pipe coated with nano-silver for water supply comprises a first synthetic resin layer containing a first nano-silver(2) and a second synthetic resin layer containing a second nano-silver(3). A lining treatment is performed on an inner surface of a cast iron pipe(1) using the first synthetic resin layer containing the first nano-silver. The second synthetic resin layer containing the second nano-silver is formed by spraying nano-silver particles on the first synthetic resin layer containing the first nano-silver.

Description

은나노를 코팅한 상수도용 철관{Nano silver coating iron pipe for water supply}Nano silver coating iron pipe for water supply

도1은 본 발명 주철관의 횡 단면도.1 is a cross-sectional view of the cast iron pipe of the present invention.

도2는 본 발명 주철관의 종 단면도.Figure 2 is a longitudinal cross-sectional view of the cast iron pipe of the present invention.

* 도면 부호의 간단한 설명* Brief description of reference numbers

1 : 주철관1: cast iron pipe

2 : 은나노를 포함하는 합성수지막2: synthetic resin film containing silver nano

3 : 은나노 코팅막3: silver nano coating film

본 발명은 상수도용으로 사용되는 철관 즉, 강관이나 주철관에 관한 것으로, 주철관이나 강관 내부에 녹 방지를 위해 합성수지로 라이닝 처리함에 있어 은나노 입자를 포함하는 합성수지로 라이닝 처리하며, 그 위에 재차 은나노 입자를 코팅하여 주철관 또는 강관과 같은 금속재 수도관 내부를 흐르는 물에 각종 유해 세균의 발생 및 증식을 억제토록 한 상수도용 철관에 관한 것이다.The present invention relates to iron pipes, that is, steel pipes or cast iron pipes used for water supply, lining with a synthetic resin containing silver nano particles in the lining treatment with a synthetic resin to prevent rust inside the cast iron pipe or steel pipe, and the silver nano particles again The present invention relates to a steel pipe for water supply, which is coated to suppress the generation and proliferation of various harmful bacteria in water flowing inside a metal water pipe such as a cast iron pipe or a steel pipe.

원래, 상수도관 또는 하수도관으로 사용되는 주철관은 용융 상태의 주물을 원심주조 형틀에 부어 넣어 원심 회전력으로 제조하는 것이므로, 고열의 주철관은 식으면서 수축하게 되고, 이때 주철관의 표면에는 크랙이나 핀홀 등의 미세한 틈이 발생하여 거친 표면을 갖게 된다.Originally, cast iron pipes used as water pipes or sewage pipes are manufactured by centrifugal rotation by pouring molten castings into a centrifugal casting mold, so that high-temperature cast iron pipes shrink as they cool down. Fine cracks are generated, resulting in a rough surface.

따라서, 주철관의 내표면에 형성된 미세한 틈이나 핀홀 등에는 미생물이 부착 번식하게 되며, 스케일이 발생되어 관 내주면을 덮는 것을 볼 수 있다.Therefore, the microorganisms are attached and propagated in minute gaps or pinholes formed on the inner surface of the cast iron pipe, and the scale is generated to cover the inner circumferential surface of the pipe.

따라서, 종래 주철관에 있어서는 미생물이 부착하는 것을 방지하고, 산화에 의한 부식을 방지하기 위해 주철관의 내주면에 콜탈(coaltar)이나 실코트를 코팅을 하거나, 시멘트 몰탈 라이닝을 형성하는 것을 볼 수 있다.Therefore, in the conventional cast iron pipe, it can be seen that in order to prevent microorganisms from adhering and to prevent corrosion due to oxidation, a coating of coaltal or seal coat is formed on the inner circumferential surface of the cast iron pipe, or a cement mortar lining is formed.

한편, 이와 같이 콜탈(coaltar)이나, 실코트, 시멘트 몰탈을 주철관 내주면에 피착시키게 되면, 주철관의 산화방지 효과와 표면에 형성된 미세한 구멍(pin hole)을 막아주어 주철관의 내주면을 보호하여 주는 역할은 하게 되나, 콜탈을 코팅한 것이나 시멘트 몰탈 라이닝 처리한 주철관을 상수도관으로 사용할 경우 수돗물에 콜탈이 용해되며, 시멘트는 서서히 분해되어 인체에 유해한 독성물질로 작용하는 단점이 발생하게 된다.On the other hand, when the coal tar, seal coat, and cement mortar is deposited on the inner circumferential surface of the cast iron pipe, the role of protecting the inner circumferential surface of the cast iron pipe by preventing the oxidation effect of the cast iron pipe and preventing the pin holes formed on the surface thereof is prevented. However, when the cast iron pipe coated with a coal or cement mortar lining is used as a water pipe, the coal is dissolved in tap water, and the cement is gradually decomposed to act as a toxic substance harmful to the human body.

그러나, 주철관의 내측면에 합성수지액으로 코팅막을 입히는 주철관의 경우, 주철관의 내측면이 산화에 의해 부식되는 것을 방지하고, 미생물이 부착되는 것을 방지함에는 어느 정도 효과가 있으나, 최상의 효과를 기대하기에는 무리가 있다.However, in the case of a cast iron pipe coated with a synthetic resin on the inner surface of the cast iron pipe, the inner surface of the cast iron pipe is prevented from being corroded by oxidation and prevents the attachment of microorganisms to some extent, but is expected to have the best effect. There is a group.

본 발명은 이와 같은 주철관의 내주면에 합성수지막을 코팅하여 합성수지막을 형성함에 있어 은 나노 입자를 포함시켜, 은 나노 입자가 갖는 살균력, 제균력, 항균력을 갖는 상수도용 주철관을 얻고자 개발된 것이다.The present invention was developed to obtain a cast iron pipe for water supply having a bactericidal, bactericidal, and antibacterial power of silver nanoparticles by including silver nanoparticles in forming a synthetic resin film by coating a synthetic resin film on the inner circumferential surface of the cast iron pipe.

이와 같은 본 발명은 주물을 부어 제조하는 주철관뿐만 아니라, 철판을 둥글게 말아 형성되는 강관에도 적용되는 것이다.The present invention is applied not only to cast iron pipes produced by pouring castings, but also to steel pipes formed by rolling iron plates roundly.

본 발명은 상수도용으로 사용되는 주철관 또는 강관 내부에 은(Ag)나노 입자를 코팅함으로써, 주철관 금속제 수도관 내부를 흐르는 물에 각종 유해 세균 발생 및 증식을 보다 더 억제토록 한 것이다.According to the present invention, silver (Ag) nanoparticles are coated inside a cast iron pipe or a steel pipe used for running water, thereby suppressing the generation and growth of various harmful bacteria in water flowing inside the metal water pipe of the cast iron pipe.

원래 은(Ag)은 원자량 107.87amu, 비중 10∼12, 용융점 960.5℃의 회백색 금속으로서, 살균력을 지녔다는 것은 이미 오래전부터 알려져 왔다.Originally, silver (Ag) is an off-white metal having an atomic weight of 107.87 amu, a specific gravity of 10 to 12, and a melting point of 960.5 ° C.

한편, 은나노(나노실버;Nano silver)란 나노기술(Nano-technology)과 은(silver)의 합성어로, 은(銀)을 나노미터(10억분의 1m) 수준, 즉 0.000000001m 로 작게 입자화한 것을 말한다.On the other hand, silver nano (Nano silver) is a compound word of nano-technology and silver, in which silver is made into small particles at a nanometer (1 billionth of a meter) level, that is, 0.000000001m. Say that.

또한 통상적으로 은나노란, 은을 분말이나 용액상태로 이루어진 것을 모두 통칭하는 것으로, 은이 갖는 강력한 항균 및 살균 기능을 갖는 것을 볼 수 있으며,In addition, silver nano is generally referred to collectively made of silver powder or solution state, it can be seen that it has a strong antibacterial and sterilizing function of silver,

은나노는 일반 전통적인 항생 물질과는 달리 세균이 내성을 갖지 못하는 특징이 있으며, 또한 미립자로부터 지속적으로 항균력을 방출시켜 유해균을 제어하므로 항균 제균력이 매우 뛰어나 지상의 거의 모든 단세포 병균을 짧은 시간에 살균하는 것으로 확인되고 있다.Unlike other traditional antibiotics, silver nano is not resistant to bacteria, and it also releases antimicrobial power continuously from microparticles to control harmful bacteria. It is confirmed.

은나노에 의한 항균 및 살균작용으로는Antimicrobial and sterilizing effect by silver nano

1. 세균의 -SH기, -COOH기, -OH기 등과 강하게 결합하여 세균의 세포막을 파괴하거나 세포의 기능을 교란시켜 세균을 죽인다는, 이론이 있으며,1. There is a theory that it binds strongly with -SH, -COOH, and -OH groups of bacteria and destroys the cell membrane of bacteria or disrupts the function of cells to kill bacteria.

2. 활성산소에 의한 살균작용 즉 콜로이드 은이 촉매 작용을 하여 산소가 활성산소(O2 +;O2-, O)로 전환되어 살균작용을 시킨다는 이론이 있으며,2. There is a theory that sterilization by active oxygen, that is, colloidal silver catalyzes and oxygen is converted into active oxygen (O 2 + ; O 2- , O) for sterilization.

3. 금속(Metal)으로서의 항균 및 살균 작용으로, 즉, 은은 다른 금속과는 달리 작은 크기로 나노화 할 수 있으므로 100㎚~200㎚의 미생물이 이를 먹이로 섭취하며, 은나노를 먹이로 섭취할 시 대사장애로 균이 죽는다는 이론이 있다.3. Antibacterial and bactericidal action as a metal, ie, silver can be nanonized to a small size unlike other metals, so microorganisms of 100 nm to 200 nm are ingested as food and metabolized when silver nano is ingested. There is a theory that bacteria die due to disorders.

따라서, 본 발명은 이러한 효과가 있는 은나노를, 금속재 수도관 내측면에 코팅 적용 시킴으로써, 기존의 합성수지막을 갖는 강관이나 주철관의 효과를 더욱더 높인 것이다.Therefore, the present invention is to apply the silver nano coating having such an effect on the inner surface of the metal water pipe, thereby further increasing the effect of the steel pipe or cast iron pipe having a conventional synthetic resin film.

본 발명은, 내측면에 합성수지막으로 라이닝 처리하여 부식을 방지하는 상수도용 주철관 또는 상수도용 강관에 있어서, 상수도용 강관 또는 주철관(1) 내측면을 라이닝 처리하는 합성수지에 은나노 분말을 포함시켜 제1 은나노 포함 합성수지막(2)을 형성하며, 상기 제1 은나노 포함 합성수지막(2) 위에 재차 은나노 입자를 포함하는 미세한 합성수지 분말을 분사하여 제2 은나노 코팅막(3)을 형성시킨 것을 특징으로 하는 은나노가 코팅된 상수도용 철관에 관한 것이다.The present invention, in the cast iron pipe or tap water steel pipe for water treatment to prevent corrosion by lining the synthetic resin film on the inner surface, the silver nano-powder is included in the synthetic resin lining the inner surface of the tap water pipe or cast iron pipe (1) A silver nano-forming film is formed by forming a silver nano-containing synthetic resin film 2 and forming a second silver nano coating film 3 by spraying fine synthetic resin powder containing silver nano particles on the first silver nano-containing synthetic resin film 2. To a coated tap water pipe.

상기에 있어, 제1 은나노 포함 합성수지막(2)은 은나노는 입자 크기가 1~100㎚, 농도 100~10,000ppm로 된 것을 합성수지 중량의 0.5 - 5.0중량%로 혼합한 것으로 제1 은나노 포함 합성수지막(2)을 구성하며,In the above, the first silver nano-containing synthetic resin film 2 is a silver nano-particles having a particle size of 1 ~ 100nm, a concentration of 100 ~ 10,000ppm mixed with 0.5-5.0% by weight of the synthetic resin weight of the first silver nano-containing synthetic resin film (2)

상기 제2 은나노 코팅막(3)은 입자 크기가 1~100㎚, 농도 100~10,000ppm 로 된 것을 200㎛ 이하의 고운 합성수지분말의 10-30중량%로 혼합한 것으로 제2 은나 노 코팅막(3)을 구성한 것이다.The second silver nano coating film 3 is a mixture of particles having a particle size of 1 to 100 nm and a concentration of 100 to 10,000 ppm at 10-30% by weight of a fine synthetic resin powder having a thickness of 200 μm or less. It is composed.

이하 도면을 통하여 본 발명인 상수도용 철관을 보다 상세히 설명하면 다음과 같다.Hereinafter, the steel pipe for waterworks of the present invention will be described in detail with reference to the accompanying drawings.

본 발명을 설명함에 있어 주철관(1)을 예로 설명한다.In describing the present invention, the cast iron pipe 1 will be described as an example.

먼저, 미리 제조된 주철관(1)은 공기와 접촉하여 쉽게 산화되어 녹을 발생하므로, 모든 공정에 앞서 주철관(1) 내측면의 이물질을 제거하는 작업을 수행하게 되는바, 이 경우 압축공기와 연마재(cut wire)를 이용한 쇼트 브라스팅 머신으로 주철관의 내측면을 청소하게 된다.First, since the cast iron pipe (1) prepared in advance is easily oxidized and rust in contact with the air, to remove the foreign matter on the inner surface of the cast iron pipe (1) prior to any process, in this case compressed air and abrasives ( Short blasting machine using cut wire cleans the inner surface of cast iron pipe.

다음으로, 청소를 마친 주철관(1)은 가열로에 장입하여 이를 280 ± 20℃로 가열하게 되는바, 상기 가열온도 280 ± 20℃는 코팅되는 합성수지(폴리에틸렌수지 내지 합성 폴리에틸렌수지 또는 에폭시수지)가 순간적으로 용해되는 온도이며, 코팅하고자하는 합성수지막의 두께에 따라 가열온도는 임의로 증감하게 된다.Next, the cleaned cast iron pipe (1) is charged to a heating furnace to heat it to 280 ± 20 ℃, the heating temperature of 280 ± 20 ℃ is coated synthetic resin (polyethylene resin to synthetic polyethylene resin or epoxy resin) The temperature is instantaneously dissolved, and the heating temperature is arbitrarily increased or decreased depending on the thickness of the synthetic resin film to be coated.

다음으로, 주철관(1) 내경에 은나노 입자가 포함된 합성수지 분말을 분사시키는 분사관을 집어넣고, 상기 분사관을 주철관 내경을 따라 전후로 이동시키면서 피착하고자 하는 두께만큼의 은나노 입자가 포함된 합성수지 분말을 공기압을 이용하여 분사시키게 되면, 은나노 입자가 포함된 합성수지 분말은 가열된 주철관(1) 내주면에 달라붙어 녹아 제 1 은나노 포함 합성수지막(2)을 형성하게 된다.Next, insert the injection pipe for injecting the synthetic resin powder containing silver nanoparticles in the inner diameter of the cast iron pipe (1), while moving the injection pipe back and forth along the inner diameter of the cast iron pipe, the synthetic resin powder containing the silver nanoparticles as much as the thickness to be deposited When sprayed using pneumatic pressure, the synthetic resin powder containing silver nanoparticles adheres to the inner circumferential surface of the heated cast iron pipe 1 and melts to form the first silver nano-containing synthetic resin film 2.

상기에 있어, 은나노 입자는 열에 의해 녹지 않지만, 열에 의해 녹는 합성수지 분말은 가열된 주철관 내주면에 달라붙게 되므로, 제1 은나노 포함 합성수지막(2)을 형성하는데에는 전혀 문제가 되지 않는다.In the above, although the silver nanoparticles are not melted by heat, the synthetic resin powder which is melted by heat adheres to the inner circumferential surface of the heated cast iron pipe, so that there is no problem in forming the first silver nano-containing synthetic resin film 2.

한편, 분사관을 통해 분사하는 합성수지 분말의 종류로는, 산이나 알칼리에 쉽게 부식되지 않는 내산성, 내알칼리성을 갖는 것과, 주철관과 접착력이 우수하여 피착된 후 쉽게 떨어지지 않는 접착성이 우수한 것과, 쉽게 부식되거나 마모되지 않는 재질의 것과 충격에 의해 쉽게 깨지거나 변형이 되지 않는 재질의 합성수지재가 바람직하게 되며 피착되는 제1 은나노 포함 합성수지막(2)은 주철관(1)의 크기에 따라 다르지만 0.2~10㎜의 두께를 갖도록 하는 것이 가장 바람직하다.On the other hand, as a kind of synthetic resin powder sprayed through the injection tube, it has acid resistance and alkali resistance that is not easily corroded to acid or alkali, excellent adhesion to cast iron pipe and excellent adhesion that does not easily fall after being deposited, and It is preferable that the synthetic resin material of a material that is not corroded or worn and that is easily broken or deformed by an impact, and the first silver nano-containing synthetic resin film 2 to be deposited varies depending on the size of the cast iron pipe 1, but is 0.2 to 10 mm. It is most preferable to have a thickness of.

상기, 가열된 주철관에 의해 용해된 합성수지재 분말은 주철관 내주면에 녹아 달라 붙어 은나노 입자가 포함된 상태로 합성수지막을 형성하게 되며, 회전이송기를 통해 주철관(1)을 회전시킬 때 합성수지막은 고른 두께로 펴짐과 동시에 평탄한 상태로 내측면을 형성하게 된다.The synthetic resin powder dissolved by the heated cast iron pipe is melted on the inner circumferential surface of the cast iron pipe to form a synthetic resin film containing silver nanoparticles, and when the cast iron pipe 1 is rotated through a rotary transfer machine, the synthetic resin film has an even thickness. At the same time, the inner surface is formed in a flat state.

다음으로, 제1 은나노 포함 합성수지막(2) 위에, 은나노 입자를 다량으로 함유하는 미세한 분말상의 합성수지로 제2 은나노 코팅막(3)을 형성하게 된다.Next, on the first silver nano-containing synthetic resin film 2, the second silver nano coating film 3 is formed of a fine powder-like synthetic resin containing a large amount of silver nanoparticles.

상기에 있어, 제2 은나노 코팅막(3) 은나노 입자의 크기는 1∼100㎚, 농도는 100∼10,000ppm으로 농축되어 있고, PH는 6∼8.5로 유지되며, 은나노의 양은 분말상의 합성수지 중량을 기준으로 0.5 - 5.0중량%이 바람직하다.In the above, the second silver nano coating film 3, the size of the silver nanoparticles is concentrated to 1 to 100nm, the concentration is 100 to 10,000ppm, the pH is maintained at 6 to 8.5, the amount of silver nano based on the weight of the powdered synthetic resin 0.5-5.0% by weight is preferred.

또한 상기 제2 은나노 코팅막(3)은 은나노 입자의 크기는 1∼100㎚, 농도는 100∼10,000ppm으로 농축된 은나노를 200㎛ 이하의 분말 상의 합성수지분말의 10-30중량%으로 혼합한 것을 사용하게 된다.In addition, the second silver nano-coating film 3 is a mixture of silver nano-concentrated to a size of 1 ~ 100nm, 100 ~ 10,000ppm silver nanoparticles of 10-30% by weight of the synthetic resin powder of 200㎛ or less powder used Done.

상기와 같이 은나노 입자가 포함된 미세한 합성수지 분말로 제2 은나노 코팅막(3) 형성 공정을 간략히 살펴보면 다음과 같다.Looking at the formation process of the second silver nano coating film 3 as a fine synthetic resin powder containing silver nano particles as described above are as follows.

즉, 은나노 입자가 포함된 미세한 합성수지분말을 분사시키는 분사관을 주철관(1) 내경에 집어넣고, 상기 분사관을 주철관 내경을 따라 전후로 이동시키면서 피착하고자 하는 두께만큼, 공기압을 이용하여 분사시켜 제2 은나노 코팅막을 형성하게 된다. 상기 은나노 입자가 포함된 합성수지분말을 주철관(1) 내부에 분사함에 있어, 제1 은나노 포함 합성수지막(2) 형성 직후 주철관(1)이 아직 식기 전에 분사하여 주철관(1) 내측면에 상기 은나노 입자자 포함된 합성수지 분말이 고른 두께로 펴지면서 합성수지막 표면에 녹아 달라붙어 제2 은나노 코팅막(3)을 형성하게 된다.That is, the injection pipe for injecting the fine synthetic resin powder containing silver nanoparticles is put into the inner diameter of the cast iron pipe (1), and the injection pipe is sprayed by using the air pressure by the thickness to be deposited while moving back and forth along the inner diameter of the cast iron pipe, the second The silver nano coating film is formed. In spraying the synthetic resin powder containing the silver nanoparticles into the cast iron pipe (1), the cast iron pipe (1) immediately after the first silver nano-containing synthetic resin film (2) is formed before spraying still before the cast iron pipe (1) on the inner surface of the silver nanoparticles The included synthetic resin powder is stretched to an even thickness to melt on the surface of the synthetic resin film to form a second silver nano coating film (3).

이상과 같이, 본 발명 주철관은, 그 내측면에 은나노 입자가 포함된 합성수지막을 형성한 후, 은나노를 고농도로 포함하는 제2 은나노 코팅막(3)을 형성함으로, 기존의 주철관에 비하여 더욱더 효과적으로 부식을 방지하며, 위생적으로 물을 유통시킬 수 있게 된다.As described above, the cast iron pipe of the present invention forms a second silver nano coating film 3 containing silver nanoparticles at a high concentration after forming a synthetic resin film containing silver nanoparticles on the inner side thereof, thereby more effectively corroding the existing cast iron pipe. Prevents water and sanitizes the water.

본 발명에 의해 제조되는 상수도용 철관인 주철관 또는 강관 내주면에 일정두께의 합성수지막을 형성하므로, 철관이 산화되어 녹이 발생 되는 것을 차단하게 되며, 형성된 합성수지막은 그 두께가 일정함과 동시에 아주 매끄러운 평활한 면을 유지하게 되므로 유속을 증진시키게 된다.Since a synthetic resin film having a predetermined thickness is formed on the inner circumferential surface of the cast iron pipe or steel pipe, which is a water pipe manufactured by the present invention, the iron pipe is oxidized to prevent rust from occurring, and the formed synthetic resin film has a constant thickness and a very smooth smooth surface. It will increase the flow rate because it is maintained.

또한, 주철관 또는 강관 내부에 일정두께로 피착되는 합성수지막은 하나의 내관을 형성하므로 철관의 강도를 더하게 되고, 또한, 충격에 의해 파손되더라도 내부의 합성수지막은 쉽게 파손되지 않으므로 누수의 염려를 지연시켜주는 효과를 갖게 된다.In addition, the synthetic resin film deposited to a certain thickness inside the cast iron pipe or steel pipe forms an inner tube, which adds to the strength of the iron pipe, and also delays the risk of leakage since the synthetic resin film inside is not easily broken even when damaged by impact. Will have an effect.

특히 합성수지막에 포함된 은나노와, 합성수지막 표면에 고농도로 피착되는 은나노에 의해, 은나노가 갖는 항균성 및 살균성이 더하여져 보다 위생적인 물을 공급할 수 있게 된다.In particular, the silver nanoparticles contained in the synthetic resin film and the silver nanoparticles deposited at a high concentration on the surface of the synthetic resin film add to the antibacterial and bactericidal properties of the silver nanoparticles, thereby providing more hygienic water.

또한, 본 발명은 수도관 내측면에 합성수지막을 형성함으로써, 내식성을 증가시키게 되므로, 기존의 주철관이나 강관에 비하여 전체적으로 월등한 효과를 가지게 되는 아주 유용한 발명이다.In addition, since the present invention increases the corrosion resistance by forming a synthetic resin film on the inner surface of the water pipe, it is a very useful invention that has a superior effect as a whole compared to the existing cast iron pipe or steel pipe.

Claims (2)

내측면에 합성수지막으로 라이닝 처리하여 부식을 방지하는 상수도용 주철관 또는 상수도용 강관에 있어서, 상수도용 강관 또는 주철관(1) 내측면을 라이닝 처리하는 합성수지에 은나노 분말을 포함시켜 제1 은나노 포함 합성수지막(2)을 형성하며, 상기 제1 은나노 포함 합성수지막(2) 위에 재차 은나노 입자를 포함하는 미세한 합성수지 분말을 분사하여 제2 은나노 코팅막(3)을 형성시킨 것을 특징으로 하는 은나노를 코팅한 상수도용 철관.In a cast iron pipe or tap water steel pipe for preventing corrosion by lining with a synthetic resin film on the inner surface, a silver resin powder is included in the synthetic resin for lining the inner surface of the tap water pipe or cast iron pipe (1) (2) forming a second silver nano coating film (3) by spraying fine synthetic resin powder containing silver nano particles again on the first silver nano-containing synthetic resin film (2) for water Iron pipe. 제1항에 있어서, 제1 은나노 포함 합성수지막(2)은 은나노의 입자 크기가 1~100㎚, 농도 100~10,000ppm 로 된 것을 합성수지 중량의 0.5 - 5.0중량%로 혼합한 것으로 하여 제1 은나노 포함 합성수지막(2)을 구성하며,The method of claim 1, wherein the first silver nano-containing synthetic resin film (2) is a silver nanoparticles having a particle size of 1 ~ 100nm, a concentration of 100 ~ 10,000ppm mixed with 0.5 to 5.0% by weight of the weight of the synthetic resin Comprises a synthetic resin film (2), 상기 제2 은나노 코팅막(3)은 은나노의 입자 크기가 1~100㎚, 농도 100~10,000ppm 로 된 것을 200㎛이하의 고운 합성수지분말의 10-30중량%로 혼합한 것으로하여 제2 은나노 코팅막(3)을 구성한 것을 특징으로 하는 은나노를 코팅한 상수도용 철관The second silver nano coating film 3 is a second silver nano coating film by mixing 10-30% by weight of fine synthetic resin powder having a particle size of 1 to 100 nm and a concentration of 100 to 10,000 ppm in a thickness of 200 μm or less ( 3) Silver nano coated iron pipe
KR1020070008216A 2007-01-26 2007-01-26 Nano silver coating iron pipe for water supply KR20080070304A (en)

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