KR20210000404A - Corrosion resistive coating and method of coating using thereof - Google Patents

Corrosion resistive coating and method of coating using thereof Download PDF

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KR20210000404A
KR20210000404A KR1020190075444A KR20190075444A KR20210000404A KR 20210000404 A KR20210000404 A KR 20210000404A KR 1020190075444 A KR1020190075444 A KR 1020190075444A KR 20190075444 A KR20190075444 A KR 20190075444A KR 20210000404 A KR20210000404 A KR 20210000404A
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coating
corrosion
corrosion resistance
molybdenum disulfide
sunflower oil
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KR1020190075444A
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Korean (ko)
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KR102292280B1 (en
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김정구
김경훈
홍민성
박윤정
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성균관대학교산학협력단
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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
    • C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
    • 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
    • B05D3/0254—After-treatment
    • 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
    • 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
    • C09D5/08—Anti-corrosive paints
    • C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
    • C09D5/084—Inorganic compounds
    • 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
    • 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
    • B05D2202/00—Metallic substrate
    • B05D2202/10—Metallic substrate based on Fe
    • B05D2202/15—Stainless steel

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Paints Or Removers (AREA)

Abstract

A corrosion-resistant coating agent according to an embodiment of the present invention includes sunflower oil and molybdenum disulfide as described above, and is coated on a metal to improve corrosion resistance. In particular, the corrosion-resistant coating agent is very effective in a seawater environment, as corrosion resistance is improved in 3.5% NaCl in an environment such as seawater. According to a coating agent and a coating method of the present invention, it is possible to effectively prevent corrosion by exhibiting high corrosion resistance compared to conventional metals by using the coating agent including sunflower oil and MoS2.

Description

부식 저항성 코팅제 및 이를 이용한 코팅 방법 {CORROSION RESISTIVE COATING AND METHOD OF COATING USING THEREOF}Corrosion-resistant coating agent and coating method using the same {CORROSION RESISTIVE COATING AND METHOD OF COATING USING USING THEREOF}

본 발명은 부식 저항성 코팅제 및 부식 저항성 코팅제의 코팅 방법에 관한 것으로서, 구체적으로 해바라기유와 이황화몰리브덴을 이용하여 복잡한 절차가 필요 없고, 저렴한 가격의 친환경적인 코팅제를 기반으로 해수 환경에서 금속의 부식 저항성을 높이는 방법에 관한 것이다.The present invention relates to a corrosion-resistant coating agent and a coating method of a corrosion-resistant coating agent, and specifically, using sunflower oil and molybdenum disulfide, does not require a complicated procedure, and based on an eco-friendly coating agent at an inexpensive price, the corrosion resistance of metals is improved. It's about how to raise it.

기존의 부식방지를 위한 코팅재는 환경오염에 시키거나, 공정이 복잡하거나 가격이 높은 단점을 가지고 있다. 이러한 문제를 극복하기 위해 여러 새로운 코팅방법들이 개발 및 적용되고 있으나, 여러 제약으로 인하여 그 효과 및 적용은 미미한 실정이다.Existing coatings for corrosion prevention have disadvantages such as environmental pollution, complicated processes, or high cost. In order to overcome this problem, several new coating methods have been developed and applied, but their effects and applications are insignificant due to various limitations.

최근, 산업과 밀접한 금속의 사용이 증가함과 동시에 매년 부식으로 인하여 GNP의 약 4% 의 막대한 경제적 손실이 일어나고 있다. 이러한 손실을 줄이기 위해, 많은 분야에서 부식으로 인한 손실을 최소화하기 위하여 연구를 진행하고 있다. 이와 같은 이유로 해수환경에서의 안정적인 금속의 사용을 위해, 해바라기유와 MoS2를 이용한 코팅제를 이용하면 기존 금속 대비 높은 부식 저항성을 나타내어 부식을 효과적으로 방지할 수 있을 것으로 판단된다.In recent years, as the use of metals close to the industry increases, there is a huge economic loss of about 4% of GNP due to corrosion every year. In order to reduce these losses, studies are being conducted to minimize losses due to corrosion in many fields. For this reason, for the stable use of metal in seawater environments, it is believed that the use of a coating agent using sunflower oil and MoS2 exhibits higher corrosion resistance compared to existing metals and can effectively prevent corrosion.

해바라기유(sunflower oil)는 해바라기 Helianthus annuus L.(국화과)의 종자로부터 얻어지는 반건성유이고, 그 성분은 지방산 조성 : 포화산(팔미트산, 스테아르산, 아라크산) 8.7~14.2, 올레산 14.1~43.1, 리놀레산 44.2~75.4, 불비누화물 1.5% 이하이다.Sunflower oil is a semi-drying oil obtained from the seeds of sunflower Helianthus annuus L. , Linoleic acid is 44.2~75.4, less than 1.5% of non-saponifiable products.

본 발명은 종래 기술의 문제점을 해결하기 위해, 친환경적이며 쉽고 빠른 방법으로 금속 전체에 균일한 코팅이 가능하며, 금속의 부식 저항성을 향상시키는 보호성 코팅 및 이를 이용한 코팅 방법을 제공하고자 한다.In order to solve the problems of the prior art, the present invention is to provide a protective coating for improving the corrosion resistance of the metal and a coating method using the same, and it is possible to uniformly coat the entire metal in an eco-friendly, easy and fast method.

본 발명의 일 실시예에 따른 부식 저항성 코팅제는, 해바라기유 및 이황화몰리브덴을 포함하고, 금속에 코팅되어 부식 저항성을 향상시킨다.The corrosion resistance coating agent according to an embodiment of the present invention includes sunflower oil and molybdenum disulfide, and is coated on a metal to improve corrosion resistance.

상기 이황화몰리브덴의 농도는 0wt% 초과 내지 15wt% 이하, 0.7wt% 내지 2wt%, 더욱 바람직하게는 1wt%이다. The concentration of molybdenum disulfide is more than 0 wt% to 15 wt% or less, 0.7 wt% to 2 wt%, and more preferably 1 wt%.

상기 금속은 스테인리스강이다.The metal is stainless steel.

본 발명의 일 실시예에 따른 부식 저항성 코팅제의 코팅 방법은, 해바라기유 및 이황화몰리브덴을 포함한 코팅액을 준비하는 단계; 준비된 금속에 상기 코팅액을 도포하는 단계; 및 270 내지 280℃의 온도로 가열하는 단계를 포함한다.The coating method of the corrosion-resistant coating agent according to an embodiment of the present invention comprises: preparing a coating solution including sunflower oil and molybdenum disulfide; Applying the coating solution to the prepared metal; And heating to a temperature of 270 to 280°C.

상기 이황화몰리브덴의 농도는 0wt% 초과 내지 15wt% 이하, 0.7wt% 내지 2wt%, 더욱 바람직하게는 1wt%이다.The concentration of molybdenum disulfide is more than 0 wt% to 15 wt% or less, 0.7 wt% to 2 wt%, and more preferably 1 wt%.

상기 금속은 스테인리스강이다.The metal is stainless steel.

상기 270 내지 280℃의 온도로 가열하는 단계에 의해 해바라기유는 층상 구조로 굳게 된다.The sunflower oil is solidified in a layered structure by heating to a temperature of 270 to 280°C.

본 발명의 코팅제 및 코팅하는 방법에 따르면, 해바라기유와 MoS2를 이용한 코팅제를 이용하여 기존 금속 대비 높은 부식 저항성을 나타내어 부식을 효과적으로 방지할 수 있다.According to the coating agent and the coating method of the present invention, by using a coating agent using sunflower oil and MoS2, it exhibits high corrosion resistance compared to existing metals, thereby effectively preventing corrosion.

도 1은 본 발명의 일 실시예에 따른 부식 저항성 코팅제의 코팅 방법의 모식도를 도시한다.
도 2는 본 발명의 일 실시예에 따른 부식 저항성 코팅제의 코팅 방법의 순서도를 도시한다.
도 3은 본 발명의 일 실시예에 따른 부식 저항성 코팅제의 이황화몰리브덴의 함량에 따른 부식 저항성 테스트 결과를 도시한다.
도 4는 주사전자 현미경을 통한 표면 관찰 결과 및 EDS 결과를 나타낸다.
도 5는 코팅 부분을 폴리싱한 후 단면(cross-section)을 확인한 결과이다.
도 6은 라멜라 구조를 확인할 수 있는 단면 결과를 도시한다.
도 7은 전기화학실험을 통해 부식 저항성을 확인한 결과이다.
도 8은 시간에 따른 표면 포텐셜을 측정하여 부식저항성을 확인한 결과이다.
다양한 실시예들이 이제 도면을 참조하여 설명되며, 전체 도면에서 걸쳐 유사한 도면번호는 유사한 엘리먼트를 나타내기 위해서 사용된다. 설명을 위해 본 명세서에서, 다양한 설명들이 본 발명의 이해를 제공하기 위해서 제시된다. 그러나 이러한 실시예들은 이러한 특정 설명 없이도 실행될 수 있음이 명백하다. 다른 예들에서, 공지된 구조 및 장치들은 실시예들의 설명을 용이하게 하기 위해서 블록 다이아그램 형태로 제시된다. 1 is a schematic diagram of a coating method of a corrosion-resistant coating agent according to an embodiment of the present invention.
2 shows a flow chart of a method of coating a corrosion-resistant coating agent according to an embodiment of the present invention.
3 shows a result of a corrosion resistance test according to the content of molybdenum disulfide in the corrosion resistance coating agent according to an embodiment of the present invention.
4 shows the results of surface observation and EDS results through a scanning electron microscope.
5 is a result of confirming a cross-section after polishing the coated portion.
6 shows a cross-sectional result for confirming the lamellar structure.
7 is a result of confirming corrosion resistance through an electrochemical experiment.
8 is a result of confirming the corrosion resistance by measuring the surface potential over time.
Various embodiments are now described with reference to the drawings, in which like reference numbers are used to indicate like elements throughout the drawings. In this specification for purposes of explanation, various descriptions are presented to provide an understanding of the invention. However, it is clear that these embodiments may be implemented without this specific description. In other instances, well-known structures and devices are presented in block diagram form to facilitate description of the embodiments.

이하, 첨부한 도면을 참조하여 본 발명의 실시예에 대해 상세히 설명한다. 본 발명은 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 본문에 상세하게 설명하고자 한다. 그러나 이는 본 발명을 특정한 개시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다. 각 도면을 설명하면서 유사한 참조부호를 유사한 구성요소에 대해 사용하였다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present invention, various modifications can be made and various forms can be obtained, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, it is to be understood as including all changes, equivalents, or substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

본 출원에서 사용한 용어는 단지 특정한 실시 예를 설명하기 위해 사용된 것으로서 본 발명을 한정하려는 의도가 아니다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. 본 출원에서, "포함하다" 또는 "가지다" 등의 용어는 명세서 상에 기재된 특징, 단계, 동작, 구성요소, 부분품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 단계, 동작, 구성요소, 부분품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.The terms used in the present application are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the existence of features, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features or steps It is to be understood that it does not preclude the possibility of addition or presence of, operations, components, parts, or combinations thereof.

본 발명은 친환경적이며 쉽고 빠른 방법으로 금속 전체에 균일한 코팅이 가능하며, 금속의 부식 저항성을 향상시키는 보호성 코팅제 및 이를 이용한 코팅 방법을 제공한다. 이하에서는 먼저 부식 저항성 코팅제의 코팅 방법을 설명하고, 이후 부식 저항성 코팅제에 대해 차례대로 설명하도록 하겠다.The present invention provides an eco-friendly, easy and quick way to uniformly coat the entire metal, and provides a protective coating agent that improves corrosion resistance of the metal and a coating method using the same. Hereinafter, a method of coating a corrosion-resistant coating agent will be first described, and then a corrosion-resistant coating agent will be sequentially described.

도 1은 본 발명의 일 실시예에 따른 부식 저항성 코팅제의 코팅 방법의 모식도를 도시하고, 도 2는 본 발명의 일 실시예에 따른 부식 저항성 코팅제의 코팅 방법의 순서도를 도시한다.1 is a schematic diagram of a coating method of a corrosion-resistant coating agent according to an embodiment of the present invention, and FIG. 2 is a flowchart illustrating a coating method of a corrosion-resistant coating agent according to an embodiment of the present invention.

본 발명의 일 실시예에 따른 부식 저항성 코팅제의 코팅 방법은, 해바라기유 및 이황화몰리브덴을 포함한 코팅액을 준비하는 단계(S 210); 준비된 금속에 상기 코팅액을 도포하는 단계(S 220); 및 270 내지 280℃의 온도로 가열하는 단계(S 230)를 포함한다.The coating method of the corrosion-resistant coating agent according to an embodiment of the present invention comprises the steps of preparing a coating solution including sunflower oil and molybdenum disulfide (S 210); Applying the coating solution to the prepared metal (S 220); And heating to a temperature of 270 to 280°C (S 230).

S 210 단계에서는 해바라기유 및 이황화몰리브덴을 포함한 코팅액을 준비한다. 이 경우 이황화몰리브덴의 농도는 0wt% 초과 내지 15wt% 이하에서 부식 저항성(내식성) 향상에 유리하다. 이는 도 3a 및 3b의 이황화몰리브덴의 함량에 따른 부식 저항성 테스트 결과에서 확인할 수 있다. 보는 것처럼 15wt%까지 부식 저항성이 향상됨을 확인할 수 있었으며, 특히 도 3b에서와 같이 이황화몰리브덴의 농도는 바람직하게 0.3 내지 5wt%, 더욱 바람직하게 0.5 내지 3wt%, 더욱 바람직하게 0.7wt% 내지 2wt%, 더욱 바람직하게 0.7 내지 1.3wt%, 가장 바람직하게 1wt% 임을 확인할 수 있었다. 즉, 이황화몰리브덴을 첨가함에 의해 부식 저항성이 향상되지만 이황화몰리브덴을 적정량을 넣어야 최대의 부식 저항성 효과를 나타냄을 확인할 수 있었으며, 일정량 이상에서는 부식 저항성 향상이 떨어지거나 나타나지 아니함을 알 수 있었다. 부식 테스트는 해수와 같은 환경의 3.5% NaCl의 환경에서 진행하였다.In step S210, a coating solution containing sunflower oil and molybdenum disulfide is prepared. In this case, the concentration of molybdenum disulfide is advantageous in improving corrosion resistance (corrosion resistance) at more than 0 wt% to 15 wt% or less. This can be confirmed from the corrosion resistance test results according to the content of molybdenum disulfide in FIGS. 3A and 3B. As can be seen, it was confirmed that corrosion resistance was improved up to 15 wt%, and in particular, the concentration of molybdenum disulfide was preferably 0.3 to 5 wt%, more preferably 0.5 to 3 wt%, more preferably 0.7 wt% to 2 wt%, More preferably 0.7 to 1.3wt%, it was confirmed that the most preferably 1wt%. That is, the corrosion resistance is improved by the addition of molybdenum disulfide, but it was confirmed that the maximum corrosion resistance effect was exhibited only when an appropriate amount of molybdenum disulfide was added, and it was found that the corrosion resistance improvement was decreased or did not appear above a certain amount. The corrosion test was conducted in an environment of 3.5% NaCl in an environment such as seawater.

S 220 단계에서는 준비된 금속에 S 210 단계에서 준비된 코팅액을 도포한다. 이 경우 금속은 스테인리스강이 이용될 수 있다.In step S 220, the coating solution prepared in step S 210 is applied to the prepared metal. In this case, stainless steel may be used as the metal.

S 230 단계에서는 270 내지 280℃의 온도로 가열을 하여 어닐링을 한다. 약 275℃의 온도에서 퍼니스에서 약 10분간 가열함으로써 코팅을 완료한다.In step S 230, annealing is performed by heating to a temperature of 270 to 280°C. The coating is completed by heating in the furnace at a temperature of about 275° C. for about 10 minutes.

이와 같은 270 내지 280℃의 온도로 가열하는 단계에 의해 해바라기유는 층상 구조로 굳게 된다. 해바라기유는 약 275℃에서 기름 내에 있던 불포화 지방산이 단백질화되어 층상 구조를 가진 형태(라멜라 구조)로 굳게 된다. 본 발명에서는 MoS2와 섞어서 가열했을 때 같은 층상 구조를 가진 MoS2와 상호보완으로 정렬이 되어 높은 부식 저항성의 코팅제가 됨을 확인하였다.Sunflower oil is solidified into a layered structure by heating to a temperature of 270 to 280°C. In sunflower oil, at about 275℃, unsaturated fatty acids in the oil are proteinized and hardened into a layered structure (lamella structure). In the present invention, when mixed with MoS2 and heated, it was confirmed that the coating material was formed to be a coating agent having high corrosion resistance because it was aligned with MoS2 having the same layered structure in complementary manner.

본 발명의 일 실시예에 따른 부식 저항성 코팅제는, 위에서 설명한 것처럼 해바라기유 및 이황화몰리브덴을 포함하고, 금속에 코팅되어 부식 저항성을 향상시킨다. 특히 해수와 같은 환경의 3.5% NaCl에서 부식 저항성이 향상됨으로써 해수 환경에서 매우 효과적이다.The corrosion-resistant coating agent according to an embodiment of the present invention includes sunflower oil and molybdenum disulfide as described above, and is coated on a metal to improve corrosion resistance. In particular, corrosion resistance is improved in 3.5% NaCl in an environment such as seawater, which is very effective in seawater environments.

이황화몰리브덴의 농도는 0wt% 초과 내지 15wt% 이하에서 부식 저항성(내식성) 향상에 유리하며, 특히 이황화몰리브덴의 농도는 바람직하게 0.3 내지 5wt%, 더욱 바람직하게 0.5 내지 3wt%, 더욱 바람직하게 0.7wt% 내지 2wt%, 더욱 바람직하게 0.7 내지 1.3wt%, 가장 바람직하게 1wt% 임을 확인할 수 있었다. The concentration of molybdenum disulfide is advantageous for improving corrosion resistance (corrosion resistance) at more than 0 wt% to 15 wt% or less, and in particular, the concentration of molybdenum disulfide is preferably 0.3 to 5 wt%, more preferably 0.5 to 3 wt%, and more preferably 0.7 wt% It was confirmed that it was 2 wt%, more preferably 0.7 to 1.3 wt%, and most preferably 1 wt%.

이하에서는 구체적인 실시예와 함께 본 발명의 내용을 추가적으로 설명하도록 하겠다.Hereinafter, the contents of the present invention will be additionally described along with specific embodiments.

해바라기유와 MoS2 (약 6um 사이즈) 입자를 10:1의 비율로 섞어 코팅액을 만들고 100ul 정도를 스테인리스강 (2cmx2cm 크기) 위에 도포하여 약 275℃의 퍼니스에 가열을 하여 코팅을 완료하였다. 이 코팅제는 3.5% NaCl의 환경인 해수 환경에서 스테인리스강을 보호하는 높은 부식 저항성을 가지고 있음을 확인하였다.Sunflower oil and MoS2 (about 6um size) particles were mixed in a ratio of 10:1 to make a coating solution, and about 100ul was applied on stainless steel (2cmx2cm size) and heated in a furnace at about 275℃ to complete the coating. It was confirmed that this coating agent has high corrosion resistance to protect stainless steel in a seawater environment, which is an environment of 3.5% NaCl.

해바라기유는 275℃에서 기름 내에 있던 불포화 지방산이 단백질화되어 층상 구조를 가진 형태로 굳게 된다. MoS2와 섞어서 가열했을 때 같은 층상 구조를 가진 MoS2와 상호보완으로 정렬이 되어 높은 부식 저항성의 코팅재가 되었다.In sunflower oil, the unsaturated fatty acids in the oil are proteinized at 275°C and solidified into a layered structure. When mixed with MoS2 and heated, it was aligned with MoS2 having the same layered structure as a complementary arrangement, resulting in a coating material with high corrosion resistance.

코팅제를 주사전자 현미경으로 관찰을 하였고, 전기화학 실험을 통해서 부식 저항성을 확인하였다. The coating agent was observed with a scanning electron microscope, and corrosion resistance was confirmed through an electrochemical experiment.

도 4는 주사전자 현미경을 통한 표면 관찰 결과 및 EDS 결과를 나타낸다. 도 4에서 처럼 표면 관찰 및 EDS를 확인한 결과 Mo와 S의 원소가 존재하는 것으로 보아 MoS2와 오일층이 같이 코팅되었음을 확인할 수 있었다.4 shows the results of surface observation and EDS results through a scanning electron microscope. As a result of surface observation and EDS as shown in FIG. 4, it was confirmed that MoS2 and an oil layer were coated together as the elements of Mo and S were present.

도 5는 코팅 부분을 폴리싱한 후 단면(cross-section)을 확인한 결과이다. 도 5에서 보는 것처럼 Mo와 S 원소가 존재함을 확인할 수 있었다.5 is a result of confirming a cross-section after polishing the coated portion. As shown in FIG. 5, it was confirmed that the elements Mo and S exist.

도 6은 라멜라 구조를 확인할 수 있는 단면 결과를 도시한다. 해바라기유는 275℃에서 층상구조인 라멜라 구조를 가지는 폴리머로 변하며 MoS2도 층상구조를 가지고 있어 상호작용을 하며 전체적인 라멜라 구조를 가지고 있음을 확인하였다.6 shows a cross-sectional result for confirming the lamellar structure. It was confirmed that sunflower oil changed to a polymer having a lamellar structure in a layered structure at 275℃, and MoS2 also had a lamellar structure, interacting with each other, and had an overall lamellar structure.

또한, MoS2의 정렬을 확인하기 위해서 XRD를 확인하여 MoS2가 횡단면으로 정렬이 되어 있음을 확인할 수 있었다. 부식 테스트는 해수와 같은 환경의 3.5% NaCl의 환경에서 진행하였고 기존의 스테인리스를 대조군으로 하였을 때 부식 저항성이 있음을 확인할 수 있었다.In addition, in order to confirm the alignment of MoS2, it was confirmed that MoS2 was aligned in a cross section by checking XRD. The corrosion test was conducted in an environment of 3.5% NaCl in the same environment as seawater, and it was confirmed that there is corrosion resistance when the existing stainless steel is used as a control.

도 7은 전기화학실험을 통해 부식 저항성을 확인한 결과이다. 처리하지 않은 스테인리스강, 해바라기유만 코팅한 스테인리스강 그리고 해바라기유와 MoS2를 섞어 코팅한 샘플을 전기화학 실험 (EIS test)을 통하여 부식 저항성을 확인하였다. 도 7a에서 초기 시간 (약 3시간) 정도에는 처리되지 않은 스테인리스 강이 가장 낮은 전기용량 루프를 가지었고 오랜 시간 (약 63시간) 전기화학실험을 진행하였을 때 해바라기유만 코팅한 것이 가장 낮은 전기용량 루프를 가지고 있었다. 하지만 MoS2와 해바라기유를 섞어 코팅한 스테인리스강은 가장 높은 전기용량 루프를 가지었고 이는 가장 부식 저항성이 낮다는 것을 의미한다. 7 is a result of confirming corrosion resistance through an electrochemical experiment. Corrosion resistance was confirmed by untreated stainless steel, stainless steel coated with only sunflower oil, and samples coated with a mixture of sunflower oil and MoS2 through an electrochemical test (EIS test). In Fig. 7A, untreated stainless steel had the lowest capacitance loop at the initial time (about 3 hours), and when electrochemical experiments were conducted for a long time (about 63 hours), coating only sunflower oil had the lowest electric capacity. Had a loop. However, stainless steel coated with a mixture of MoS2 and sunflower oil had the highest capacitance loop, which means that it has the lowest corrosion resistance.

도 8은 시간에 따른 표면 포텐셜을 측정하여 부식저항성을 확인한 결과이다. 해바라기유만 코팅한 코팅재는 빠르게 포텐셜이 낮아서 시간에 따른 부식 저항성 저하가 일어났지만 MoS2를 섞은 코팅재는 포텐셜의 변화가 없이 일정한 수치를 유지하는 경향을 보였다. 이는 MoS2와 해바라기유가 굳는 작용을 하면서 서로의 층상구조가 상호작용하여 안정한 코팅재가 되었음을 확인할 수 있다.8 is a result of confirming the corrosion resistance by measuring the surface potential over time. The coating material coated with only sunflower oil quickly lowered the potential, so the corrosion resistance declined over time, but the coating material mixed with MoS2 showed a tendency to maintain a constant value without changing the potential. It can be seen that MoS2 and sunflower oil have a hardening action, and the layered structures of each other interact to form a stable coating material.

제시된 실시예들에 대한 설명은 임의의 본 발명의 기술 분야에서 통상의 지식을 가진 자가 본 발명을 이용하거나 또는 실시할 수 있도록 제공된다. 이러한 실시예들에 대한 다양한 변형들은 본 발명의 기술 분야에서 통상의 지식을 가진 자에게 명백할 것이며, 여기에 정의된 일반적인 원리들은 본 발명의 범위를 벗어남이 없이 다른 실시예들에 적용될 수 있다. 그리하여, 본 발명은 여기에 제시된 실시예들로 한정되는 것이 아니라, 여기에 제시된 원리들 및 신규한 특징들과 일관되는 최광의의 범위에서 해석되어야 할 것이다. The description of the presented embodiments is provided to enable any person skilled in the art to use or implement the present invention. Various modifications to these embodiments will be apparent to those of ordinary skill in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

Claims (11)

해바라기유 및 이황화몰리브덴을 포함하고,
금속에 코팅되어 부식 저항성을 향상시키는,
부식 저항성 코팅제.
Including sunflower oil and molybdenum disulfide,
Coated on metal to improve corrosion resistance,
Corrosion resistant coating.
 제 1 항에 있어서,
상기 이황화몰리브덴의 농도는 0wt% 초과 내지 15wt% 이하인,
부식 저항성 코팅제.
The method of claim 1,
The concentration of molybdenum disulfide is greater than 0wt% to less than 15wt%,
Corrosion resistant coating.
 제 1 항에 있어서,
상기 이황화몰리브덴의 농도는 0.7wt% 내지 2wt%인,
부식 저항성 코팅제.
The method of claim 1,
The concentration of molybdenum disulfide is 0.7wt% to 2wt%,
Corrosion resistant coating.
 제 1 항에 있어서,
상기 이황화몰리브덴의 농도는 1wt%인,
부식 저항성 코팅제.
The method of claim 1,
The concentration of molybdenum disulfide is 1 wt%,
Corrosion resistant coating.
 제 1 항에 있어서,
상기 금속은 스테인리스강인,
부식 저항성 코팅제.
The method of claim 1,
The metal is stainless steel,
Corrosion resistant coating.
 해바라기유 및 이황화몰리브덴을 포함한 코팅액을 준비하는 단계;
준비된 금속에 상기 코팅액을 도포하는 단계; 및
270 내지 280℃의 온도로 가열하는 단계를 포함하는,
부식 저항성 코팅제의 코팅 방법.
Preparing a coating solution containing sunflower oil and molybdenum disulfide;
Applying the coating solution to the prepared metal; And
Including the step of heating to a temperature of 270 to 280 ℃,
Coating method for corrosion resistant coatings.
 제 6 항에 있어서,
상기 이황화몰리브덴의 농도는 0wt% 초과 내지 15wt% 이하인,
부식 저항성 코팅제의 코팅 방법.
The method of claim 6,
The concentration of molybdenum disulfide is greater than 0wt% to less than 15wt%,
Coating method for corrosion resistant coatings.
 제 6 항에 있어서,
상기 이황화몰리브덴의 농도는 0.7wt% 내지 2wt%인,
부식 저항성 코팅제의 코팅 방법.
The method of claim 6,
The concentration of molybdenum disulfide is 0.7wt% to 2wt%,
Coating method for corrosion resistant coatings.
 제 6 항에 있어서,
상기 이황화몰리브덴의 농도는 1wt%인,
부식 저항성 코팅제의 코팅 방법.
The method of claim 6,
The concentration of molybdenum disulfide is 1 wt%,
Coating method for corrosion resistant coatings.
 제 6 항에 있어서,
상기 금속은 스테인리스강인,
부식 저항성 코팅제의 코팅 방법.
The method of claim 6,
The metal is stainless steel,
Coating method for corrosion resistant coatings.
 제 6 항에 있어서,
상기 270 내지 280℃의 온도로 가열하는 단계에 의해 해바라기유는 층상 구조로 굳게 되는,
부식 저항성 코팅제의 코팅 방법.The method of claim 6,
The sunflower oil is solidified in a layered structure by heating to a temperature of 270 to 280 °C,
Coating method for corrosion resistant coatings.
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