KR100470638B1 - A method for manufacturing pre-phosphated anti-finger treatment steel sheet with good corrosion resistance property and anti-alkalinity - Google Patents
A method for manufacturing pre-phosphated anti-finger treatment steel sheet with good corrosion resistance property and anti-alkalinity Download PDFInfo
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- KR100470638B1 KR100470638B1 KR10-2000-0069476A KR20000069476A KR100470638B1 KR 100470638 B1 KR100470638 B1 KR 100470638B1 KR 20000069476 A KR20000069476 A KR 20000069476A KR 100470638 B1 KR100470638 B1 KR 100470638B1
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
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Abstract
본 발명은 컴퓨터, 세탁기, VTR 등 가전용기기의 부품에 사용되는 내지문강판의 제조방법에 관한 것이고, Zn 또는 Zn계 합금 도금강판에 인산염처리한 후 전도성고분자물질인 폴리아닐린을 코팅하고 최종 내지문수지를 코팅함으로써, 내알칼리성 및 내식성이 우수하고 환경친화적인 내지문강판의 제조방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a manufacturing method of anti-finger steel sheet used in parts of home appliances such as computer, washing machine, VTR, and after coating phosphate treatment on Zn or Zn-based alloy plated steel sheet and coating polyaniline, which is a conductive polymer, By coating, to provide a method of producing an alkali-resistant steel plate excellent in alkali resistance and corrosion resistance, the purpose is to.
상기한 목적을 달성하기 위한 본 발명은, The present invention for achieving the above object,
Zn 또는 Zn계 합금 도금강판에 인산염처리를 하고, 내지문수지를 코팅하는 것을 포함하여 이루어지는 인산염처리 내지문강판의 제조방법에 있어서,In the method for producing a phosphate-treated to steel sheet comprising a phosphate treatment on the Zn or Zn-based alloy plated steel sheet, and coating the fingerprinting resin,
상기 인산염처리는, 인산염 부착량을 0.5~1.5g/㎡로 하여 실시하고,The phosphate treatment is carried out with a phosphate deposition amount of 0.5 to 1.5 g / m 2,
상기 인산염처리후 내지문수지를 코팅하기 전에, 농도가 1~5vol.%인 폴리아닐린 용액을 이용하여 0.05~1.0㎛ 두께로 폴리아닐린을 코팅하는 것이 추가로 포함되는 것을 특징으로 하는 내알칼리성 및 내식성이 우수한 인산염처리 내지문강판의 제조방법에 관한 것이다.Phosphate excellent in alkali resistance and corrosion resistance further comprising coating the polyaniline to a thickness of 0.05 to 1.0 μm using a polyaniline solution having a concentration of 1 to 5 vol. It relates to a process for producing a treated or steel plate.
Description
본 발명은 컴퓨터, 세탁기, VTR 등 가전용기기의 부품에 사용되는 내지문강판의 제조방법에 관한 것이고, 보다 상세하게는 Zn 또는 Zn계 합금 도금강판에 인산염처리한 후 종래 행해지던 크롬씰링(Cr-sealing) 대신 폴리아닐린을 코팅함으로써, 환경에 유해하지 않고 내알칼리성 및 내식성이 우수한 인산염처리 내지문강판을 제조하는 방법에 관한 것이다.The present invention relates to a method for manufacturing an anti-fingerprint steel sheet used for components of a home appliance such as a computer, a washing machine, a VTR, and more specifically, a chromium sealing (Cr) conventionally performed after phosphate treatment on a Zn or Zn-based alloy plated steel sheet. By coating polyaniline instead of (sealing), and relates to a method for producing a phosphate-treated to steel sheet excellent in alkali resistance and corrosion resistance without harmful to the environment.
내지문강판은, 손으로 강판을 만지는 경우 지문이 묻지 않고 내식성이 우수하기 때문에, 컴퓨터, 세탁기, VTR 등 가전용기기의 부품에 주로 사용되고 있다. 따라서, 강판표면에는 어떠한 미세 얼룩형 결함도 있어서는 않되고 가공성이 우수해야 하며 내식성도 뛰어나야 한다. The anti-fingerprint steel sheet is mainly used for parts of home appliances such as computers, washing machines, VTRs, and the like because it is excellent in corrosion resistance without fingerprints when the steel sheet is touched by hand. Therefore, the surface of the steel sheet should not have any microscopic defects, but should be excellent in workability and excellent in corrosion resistance.
종래 내지문강판은, 아연도금층 위에 크로메이트처리를 하고 내지문수지를 코팅하는 공정으로 제조되거나 혹은, 아연합금도금층 위에 인산염처리를 하고 내지문수지를 코팅하는 공정으로 제조되었다.Conventional anti-fingerprint steel sheet is produced by the process of coating the anti-fingerprint on the zinc plated layer or by coating the anti-finish resin on the zinc alloy plated layer.
그러나, 이와 같은 종래 내지문강판에서는, 도금층 표면에 미세한 결함만 있어도 그것이 그대로 투명한 수지층에 전사되어 표면얼룩을 형성할 뿐만 아니라, 가공시 다이와의 마찰에 의해 가공부위가 흑색화되는 결함을 유발시켰다. 또한, 상기 크로메이트처리를 실시하는 강판은, 크롬을 1~100mg/㎡으로 부착시키기 때문에 환경 측면에서도 바람직하지 않고, 인산염처리된 내지문강판은 표면이 미려하고 가공성이 우수한 장점이 있으나 인산염처리에 의한 인산염피막이 탈지용액인 알칼리 용액에 쉽게 침식되는 단점을 갖기 때문에, 바람직하지 않다.However, in such conventional anti-finger steel sheet, even if there are only minor defects on the surface of the plated layer, it is transferred to the transparent resin layer as it is, thereby forming a surface stain, and also causing a defect in which the processed part becomes black due to friction with the die during processing. . In addition, the steel plate subjected to the chromate treatment is not preferable in terms of environment because it attaches chromium at 1 to 100 mg / m 2, and the phosphate-treated steel sheet has an excellent surface and excellent workability, but It is not preferable because the phosphate coating has the disadvantage of easily eroding into an alkaline solution which is a degreasing solution.
이에, 표면결함을 방지하고 가공흑화를 개선하기 위한 연구가 진행되어, 도 1(a)에 나타난 바와 같이, 도금후 인산염처리를 하고 그 위에 크롬 씰링(sealing)처리를 실시한 다음 수지를 코팅하는 방법이 등장하였다. Thus, studies to prevent surface defects and to improve the process blackening, as shown in Figure 1 (a), after the phosphate treatment after plating and chrome sealing (sealing) on the method of coating the resin Appeared.
상기 인산염처리에 의해 형성된 인산염피막에 의하면, 소지강판이나 도금층 표면에 잔존하고 있는 미세한 얼룩형 결함들을 덮어주기 때문에 깨끗한 표면을 얻을 수 있고, 또한 가공시에도 경도가 높아 다이와의 마찰에 의해 표면이 흑화되는 현상을 완전히 방지할 수 있는 장점이 있다. 그러나, 근본적으로 인산염피막은 알칼리용액에 취약한 단점을 가지고 있기 때문에, 수요가들이 강판을 가공한 후 알칼리용액으로 탈지할 경우 알칼리용액에 의해 침식당하여 강판표면이 얼룩을 형성하게 된다. 또한, 인산염피막은 기공이 많아 그대로 수지를 코팅하여 사용할 경우에는 내식성이 열악하기 때문에, 인산염처리후에는 통상 묽은 크롬용액으로 강판 표면을 분사해 주는 씰링(sealing)처리를 실시한다. 그러나, 이와 같은 크롬 씰링처리를 하면, 크롬이 0.5~2.0mg/㎡ 정도 부착되어 내식성은 크게 향상되지만, 역시 적은 양일지라도 크롬이 부착되어 있기 때문에 환경에 유해하다.According to the phosphate coating formed by the phosphate treatment, a clean surface can be obtained because it covers the minute stain-like defects remaining on the surface of the steel sheet or the plating layer, and the surface is blackened by friction with the die due to its high hardness during processing. There is an advantage that can completely prevent the phenomenon. However, since the phosphate coating has a disadvantage of weakness to the alkaline solution, the surface of the steel sheet is eroded by the alkaline solution when the customers degrease the alkaline solution after processing the steel sheet. In addition, since the phosphate coating has a lot of pores, and the resin is used as it is, the corrosion resistance is poor. Therefore, after the phosphate treatment, a sealing treatment is performed in which the surface of the steel sheet is sprayed with a dilute chromium solution. However, when the chromium sealing treatment is performed, chromium is attached to about 0.5 to 2.0 mg / m 2, thereby improving corrosion resistance. However, chromium is attached even at a small amount, which is harmful to the environment.
이에, 본 발명자들은 상기와 같은 문제점을 해결하기 위하여 연구와 실험을 거듭하고 그 결과에 근거하여 본 발명을 제안하게 된 것으로, 본 발명은 Zn 또는 Zn계 합금 도금강판에 인산염처리한 후 전도성 고분자물질인 폴리아닐린을 코팅하고 최종 내지문수지를 코팅함으로써, 내알칼리성 및 내식성이 우수하고 환경친화적인 내지문강판의 제조방법을 제공하고자 하는데, 그 목적이 있다. Accordingly, the present inventors have repeatedly conducted research and experiments to solve the above problems, and propose the present invention based on the results. The present invention is a conductive polymer material after phosphating the Zn or Zn-based alloy plated steel sheet. By coating phosphorus polyaniline and coating the final to-finger resin, an object of the present invention is to provide a method for producing an alkali-resistant steel plate excellent in alkali resistance and corrosion resistance and environmentally friendly.
상기한 목적을 달성하기 위한 본 발명은, The present invention for achieving the above object,
Zn 또는 Zn계 합금 도금강판에 인산염처리를 하고, 내지문수지를 코팅하는 것을 포함하여 이루어지는 인산염처리 내지문강판의 제조방법에 있어서,In the method for producing a phosphate-treated to steel sheet comprising a phosphate treatment on the Zn or Zn-based alloy plated steel sheet, and coating the fingerprinting resin,
상기 인산염처리는, 인산염 부착량을 0.5~1.5g/㎡로 하여 실시하고,The phosphate treatment is carried out with a phosphate deposition amount of 0.5 to 1.5 g / m 2,
상기 인산염처리후 내지문수지를 코팅하기 전에, 농도가 1~5vol.%인 폴리아닐린 용액을 이용하여 0.05~1.0㎛ 두께로 폴리아닐린을 코팅하는 것이 추가로 포함되는 것을 특징으로 하는 내알칼리성 및 내식성이 우수한 인산염처리 내지문강판의 제조방법에 관한 것이다.Phosphate excellent in alkali resistance and corrosion resistance further comprising coating the polyaniline to a thickness of 0.05 to 1.0 μm using a polyaniline solution having a concentration of 1 to 5 vol. It relates to a process for producing a treated or steel plate.
이하, 본 발명에 대하여 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated.
본 발명의 발명자들은, 인산염처리후 크롬씰링을 대체할 수 있는 물질에 대하여 연구하던 중, 전도성 고분자물질인 폴리아닐린을 이용하면, 환경에 유해하지 않으면서 우수한 내알칼리성 및 내식성을 얻을 수 있다는 것을 발견하고, 본 발명을 완성시켰다.The inventors of the present invention, while studying a material that can replace the chrome sealing after phosphate treatment, found that the use of the conductive polymer polyaniline can obtain excellent alkali resistance and corrosion resistance without being harmful to the environment. The present invention has been completed.
즉, 본 발명의 내지문강판은, 도 1(b)에 나타난 바와 같이, Zn 또는 Zn계 합금 도금강판에 인산염처리에 의해 인산염피막을 형성하고, 폴리아닐린 코팅에 의해 폴리아닐린 박막을 형성하고, 내지문수지처리에 의해 수지층을 형성하여 제조되는데, 이 때 상기 인산염처리시 인산염은 0.5~1.5g/㎡ 부착되는 것이 바람직하다. 그 이유는, 상기 인산염의 부착량이 0.5g/㎡ 미만이면 도금층표면에 형성된 얼룩을 덮어줄 수 없고 가공시 다이와의 마찰에 의한 흑색화를 방지할 수 없으며, 1.5g/㎡ 이상이면 용접성이 떨어지기 때문이다. That is, the anti-fingerprint steel sheet of the present invention, as shown in Figure 1 (b), to form a phosphate coating on the Zn or Zn-based alloy plated steel sheet by phosphate treatment, to form a polyaniline thin film by polyaniline coating, The resin layer is formed by treatment, and in this case, the phosphate is preferably attached at 0.5 to 1.5 g / m 2 during the phosphate treatment. The reason is that if the adhesion amount of the phosphate is less than 0.5 g / m 2, the stain formed on the surface of the plating layer cannot be covered, and blackening due to friction with the die during processing cannot be prevented, and if it is more than 1.5 g / m 2, the weldability is poor. Because.
상기 인산염처리후 폴리아닐린 박막을 형성시키는데, 상기 폴리아닐린은 10nm의 매우 작은 입자로서, 전기전도도는 5S/m를 나타내지만, 제조방법이나 코팅방법에 따라 1000S/m까지도 가능하다. 이와 같은 폴리아닐린은, 아닐린(aniline)을 산화중합하여 합성하는데, 아닐린의 산화는 전기화학적인 중합과 화학적인 중합에 의해 가능하다. 이와 같은 폴리아닐린은 부식방지효과를 제공하는데, 그것에 관련된 이론에는 다음과 같은 것들이 있고, 이들 효과는 일반적으로, 동시에 얻어진다.After the phosphate treatment, a polyaniline thin film is formed. The polyaniline is a very small particle of 10 nm, and has an electrical conductivity of 5 S / m, but may be up to 1000 S / m depending on a manufacturing method or a coating method. Such polyaniline is synthesized by oxidatively polymerizing aniline, but oxidation of aniline is possible by electrochemical polymerization and chemical polymerization. Such polyaniline provides an anticorrosion effect, and theories related thereto are as follows, and these effects are generally obtained simultaneously.
i) 고분자피막에 의한 산소, 수분 등의 침투방지i) Prevention of penetration of oxygen, moisture, etc. by polymer film
ii) 하부 금속과의 계면에 금속산화피막 형성ii) Formation of metal oxide film on the interface with the lower metal
iii) 금속표면에 부착되어 높은 산화전위를 형성함에 의한 금속에서 산화제로의 전자이동 억제iii) inhibition of electron transfer from metal to oxidant by adhering to the metal surface to form a high oxidation potential
상기 폴리아닐린을 인산염피막상에 코팅시키는데 있어서, 농도가 1~5vol.%인 폴리아닐린을 이용하여, 0.05~1.0㎛ 두께의 폴리아닐린 박막을 형성시키는 것이 바람직하다. 그 이유는 상기 폴리아닐린의 농도가 1vol.% 미만이면 내식성효과가 떨어지고, 5vol.% 이상이면 침적이나 분산에 의하여 인산염피막이 일부 용해되기 때문이다. 또한, 상기 폴리아닐린 박막의 두께가 0.05㎛ 미만이면 내식성이나 내알칼리성이 열악해지고, 1.0㎛ 이상이면 코팅하기가 어렵고 비경제적이기 때문이다.In coating the polyaniline on the phosphate film, it is preferable to form a polyaniline thin film having a thickness of 0.05 μm to 1.0 μm using polyaniline having a concentration of 1 to 5 vol.%. The reason is that when the concentration of the polyaniline is less than 1 vol.%, The corrosion resistance is inferior. If the polyaniline is more than 5 vol.%, The phosphate coating is partially dissolved by deposition or dispersion. In addition, when the thickness of the polyaniline thin film is less than 0.05 μm, corrosion resistance and alkali resistance are poor, and when it is 1.0 μm or more, coating is difficult and uneconomical.
폴리아닐린을 금속상에 코팅하는 방법으로는, 침적, 분사, 전해 및 롤코터 방법 등이 있으며 이들 중 어떤 방법을 택하여 사용하여도 무방하며, 코팅 후 통상의 방법에 의해 100~200℃의 온도에서 1~3초간 건조한다.As a method of coating polyaniline on a metal, there are immersion, spraying, electrolytic and roll coating methods, and any of these methods may be used, and after coating, at a temperature of 100 to 200 ° C. Dry for 1-3 seconds.
이와 같이 형성된 폴리아닐린 박막은, 투명한 녹색을 띄는 활성금속으로서, 환원조건에서는 노랑색을, 산화조건에서는 청색을 띄며 어떤 용매에도 용해되지 않는다. The polyaniline thin film thus formed is an active metal having a transparent green color, yellow under reducing conditions, and blue under oxidizing conditions, and do not dissolve in any solvent.
상기한 바와 같이, 본 발명에 의해 폴리아닐린 박막이 형성된 강판에는, 최종적으로 내지문 수지처리를 실시하여 수지층을 형성시키는데, 그 방법은 통상의 것을 이용할 수 있고, 수지부착량은 통상 500~1500mg/㎡인 것이 바람직하다.As described above, the steel sheet on which the polyaniline thin film is formed according to the present invention is finally subjected to anti-fingerprint resin treatment to form a resin layer. The method can be a conventional one, and the resin deposition amount is usually 500 to 1500 mg / m 2. Is preferably.
이하, 본 발명을 실시예를 통하여 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.
(실시예)(Example)
냉연강판을 100×200mm로 절단하여 탈지와 산세를 거친 후, 중형 전기도금장치를 이용하여 아래와 같은 용액조성 및 도금조건으로 도금을 실시하였다.The cold rolled steel sheet was cut to 100 × 200 mm, subjected to degreasing and pickling, and then plated under the following solution composition and plating conditions using a medium electroplating apparatus.
Zn2+ 농도 : 80g/ℓZn 2+ concentration: 80g / ℓ
Cl-농도 : 230g/ℓCl - concentration: 230 g / ℓ
유기첨가제 농도 : 0.3㎖/ℓOrganic Additive Concentration: 0.3mL / ℓ
온도 : 60℃Temperature: 60 ℃
pH : 5pH: 5
전류밀도 : 60 A/dm2 Current density: 60 A / dm 2
도금부착량 : 20 g/m2 Coating weight: 20 g / m 2
상기 아연도금층 위에 인산염처리는 표면조정(30℃, 2초)을 거쳐 전산도(total acid) 20 포인트, 유리산도(free acid) 0.9 포인트에서 용액온도 60℃로 8초간 처리하였으며, 이렇게 하여 얻어진 인산염피막의 부착량은 1.2g/m2이었다.Phosphate treatment on the galvanized layer was treated for 8 seconds at a solution temperature of 60 ° C. at 20 points of total acid and 0.9 points of free acid through surface adjustment (30 ° C., 2 seconds). The deposition amount of the film was 1.2 g / m 2 .
인산염처리된 강판에 대하여, 일부 시편에 대해서는 1.5mg/㎡의 크롬 부착량으로 크롬처리를 실시하여 종래예로 하였고, 나머지 시편에 대해서는 하기 표1과 같이 폴리아닐린의 농도를 달리한 폴리아닐린 용액(폴리아닐린, 용제 및 물로 이루어짐)에 8초간 침지하여 폴리아닐린 박막을 형성시킨 후, 80℃에서 3초간 건조시켰다. 한편, 상기 폴리아닐린 박막의 두께는 폴리아닐린의 농도에 따라, 하기 표1과 같이 변화하였다.For the phosphate-treated steel sheet, some specimens were treated with chromium by 1.5 mg / m 2 of chromium, and the polyaniline solution (polyaniline, solvent, etc.) having different concentrations of polyaniline as shown in Table 1 below. And water) soak for 8 seconds to form a polyaniline thin film, and then dried at 80 ° C. for 3 seconds. Meanwhile, the thickness of the polyaniline thin film was changed as shown in Table 1 according to the concentration of polyaniline.
그 후, 수지부착량을 800mg/㎡으로 하여 내지문수지처리를 실시하고, 얻어진강판에 대해 내식성 및 내알칼리성 평가를 행하였다. Subsequently, the anti-fingerprint treatment was performed at a resin deposition amount of 800 mg / m 2, and corrosion resistance and alkali resistance were evaluated for the obtained steel sheet.
내식성 평가는, 염수분무시험기를 이용하여 140시간 경과후 표면에 형성된 백청 발생면적을 퍼센트(%)로 환산하여 행하는데, 이 때 백청발생 면적이 5% 이하인 경우를 합격으로 한다. Corrosion resistance evaluation is performed by converting the area of white rust generated on the surface in percent (%) after 140 hours using a salt spray tester, and the case where the area of white rust generated is 5% or less is a pass.
내알칼리성은, 수산화나트륨(NaOH) 0.3%용액을 제조하여 80℃에서 10분간 시편을 침지 한후 꺼내어, 침지 전후의 백색도 차이로서 평가한다. 통상 백색도 차가 2.0 이하면 사람이 육안으로 식별하기가 어렵기 때문에 2 이하면 합격으로 판정한다. The alkali resistance is prepared by preparing a 0.3% solution of sodium hydroxide (NaOH), dipping the specimen at 80 ° C. for 10 minutes, and taking it out, and evaluating it as a difference in whiteness before and after dipping. Usually, when the difference in whiteness is 2.0 or less, it is difficult for a person to visually identify.
상기 평가결과들을 하기 표 1에 나타낸다.The evaluation results are shown in Table 1 below.
상기 표 1에 나타난 바와 같이, 인산염처리후 크로메이트처리를 실시한 종래예의 경우에는, 염수분무 140시간후 시편의 15%에 해당하는 면적에서 백청이 발생하였고, 내알칼리성도 백색도차가 4.3으로 열악한 것을 알 수 있다.As shown in Table 1, in the case of the conventional example subjected to chromate treatment after phosphate treatment, white rust occurred in an area corresponding to 15% of the specimen after 140 hours of saline spraying, and it was found that the alkali resistance whiteness difference was poor at 4.3. have.
또한, 폴리아닐린의 피막두께가 0.02㎛으로 아주 적은 비교예(1)의 경우에는, 내식성 및 내알칼리성이 좋지 않았으며 폴리아닐린의 피막두께가 1.5㎛으로 아주 큰 비교예(2)의 경우에는 내식성과 내알칼리성이 우수하게 나타났으나 피막의 건조가 어렵고 비경제적인 문제점이 있다.In addition, in Comparative Example (1) having a very small film thickness of polyaniline of 0.02 µm, the corrosion resistance and alkali resistance were not good, and in Comparative Example (2) having a large film thickness of polyaniline of 1.5 µm, the corrosion resistance and resistance were very high. Although excellent alkalinity appeared, there is a problem that the drying of the coating is difficult and uneconomical.
그러나, 본 발명의 발명예(1)~(5)는 내식성, 내알칼리성은 물론 작업성에서도 모두 아주 우수한 것으로 나타났다.However, Inventive Examples (1) to (5) of the present invention were all excellent in corrosion resistance, alkali resistance as well as workability.
상기한 바와 같이 본 발명에 의하면, 인산염처리후 전도성 고분자물질인 폴리아닐린을 코팅하고 내지문수지를 코팅함으로써, 우수한 방식특성을 나타내고, 어떤 용매에도 용해되지 않아 알칼리용액에 의해서도 침식되지 않으며, 또한 환경친화적인 강판으로 할 수 있는 효과가 있는 것이다.As described above, according to the present invention, after coating the polyaniline, which is a conductive polymer material after the phosphate treatment, and the anti-finger resin, it exhibits excellent anticorrosive properties, does not dissolve in any solvent, does not erode by alkaline solutions, and is environmentally friendly. There is an effect that can be made of steel sheet.
도 1은 내지문처리강판의 도금층 구조를 나타내는 것으로,1 shows a plated layer structure of an anti-fingerprint steel sheet,
(a)는 종래 인산염처리 내지문강판, (b)는 본 발명의 인산염처리 내지문강판을 나타낸다.(a) shows a conventional phosphate-treated steel sheet, (b) shows a phosphate-treated steel sheet of the present invention.
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|---|---|---|---|---|
| KR840007037A (en) * | 1982-12-08 | 1984-12-04 | 원본미기재 | Phosphoric Acid Treatment of Galvanized Metals |
| WO1995000678A1 (en) * | 1993-06-25 | 1995-01-05 | Zipperling Kessler & Co (Gmbh & Co) | Method of manufacturing metal components protected against corrosion, and metal components manufactured by this method |
| JPH08252518A (en) * | 1995-03-16 | 1996-10-01 | Nippon Steel Corp | Heavy corrosion preventive method with hardly peelable cathode |
| JPH10158854A (en) * | 1996-12-03 | 1998-06-16 | Nippon Steel Corp | Organic composite plated steel sheet excellent in conductivity |
| JPH10251509A (en) * | 1997-03-07 | 1998-09-22 | Nippon Steel Corp | Metal surface treating solution and surface treated metal plate |
| KR20010062515A (en) * | 1999-12-27 | 2001-07-07 | 사또미 유따까 | Metal surface treatment chemical, surface treatment method and surface-treated metal material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR840007037A (en) * | 1982-12-08 | 1984-12-04 | 원본미기재 | Phosphoric Acid Treatment of Galvanized Metals |
| WO1995000678A1 (en) * | 1993-06-25 | 1995-01-05 | Zipperling Kessler & Co (Gmbh & Co) | Method of manufacturing metal components protected against corrosion, and metal components manufactured by this method |
| JPH08500770A (en) * | 1993-06-25 | 1996-01-30 | ツイッパーリング ケスラー ウント コー（ゲーエムベーハー ウント コー） | Method for producing corrosion-protected metal material and material obtained by this method |
| JPH08252518A (en) * | 1995-03-16 | 1996-10-01 | Nippon Steel Corp | Heavy corrosion preventive method with hardly peelable cathode |
| JPH10158854A (en) * | 1996-12-03 | 1998-06-16 | Nippon Steel Corp | Organic composite plated steel sheet excellent in conductivity |
| JPH10251509A (en) * | 1997-03-07 | 1998-09-22 | Nippon Steel Corp | Metal surface treating solution and surface treated metal plate |
| KR20010062515A (en) * | 1999-12-27 | 2001-07-07 | 사또미 유따까 | Metal surface treatment chemical, surface treatment method and surface-treated metal material |
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