해양구조물 도장에서 하드 페퍼링 有, 無에 따른 부착력 및 방식성능 연구
- Alternative Title
- Study of Adhesion & Corrosion Protection Property by Sandpaper in Offshore Structure.
- Abstract
- The act of coating steel products with paint has been well documented and studied through long periods of time and has proven to be the most effective method to maintain the integrity of steel. Although coating of steel sounds simple in theory, the practice follows sophisticated and rigorous systems which depend highly on the environment of the steel.
For instance, a re-coating procedure in high level paint system is performed on offshore steel structures to combat harsh environmental factors that catalyze steel corrosion (i.e. salt and weathering). This paper discusses the effectiveness of sandpapering during a re-coating procedure in high level paint system.
The author has taken 3 sections of steel cross-sections (Side, Side-bottom, and Bottom) and divided each into two groups: Sandpapered coated steel and Non-sandpapered coated steel. It has then conducted Salt Spray Test and Immersion Test on all steel cross-sections for 16 weeks. Every week, an EIS resistance measurement was observed at 0.01Hz for steel corrosion, and Pull-off Test was carried out to measure adhesiveness of the coating.
Results of this experiment indicate that there are no correlations between hard papering and anti-corrosion and adhesiveness of a protective coating after a re-coating procedure in high level paint system.
- Issued Date
- 2015
- Awarded Date
- 2015. 2
- Type
- Dissertation
- Publisher
- 부경대학교 일반대학원
- Alternative Author(s)
- JUNG MIN LEE
- Affiliation
- 부경대학원 공업화학과
- Department
- 대학원 공업화학과
- Advisor
- 박진환
- Table Of Contents
- 1. 서론 1
2. 이론적 배경 3
2.1 유기도막에 의한 방식 기구 3
2.2 유기도막의 노화 메커니즘 7
2.2.1 유기도막 노화의 원인 7
2.2.2 유기도막 노화의 외적요인 8
2.3 가속노화시험 11
2.4 교류 임피던스 12
2.4.1 교류 임피던스에 대한 이론 13
2.4.2 부식계의 등가회로와 교류 임피던스 특성 19
2.4.2.1 부식계의 등가회로 19
2.4.2.2 유기도막의 등가회로 22
2.4.3 교류 임피던스 측정 결과 표시 방법 26
2.4.4 Electrochemical impedance spectroscopy(EIS)의 구성 30
2.4.5 교류 임피던스 측정법의 장치적 원리 31
2.4.6 도막의 노화에 따른 등가회로와 교류 임피던스 diagram 33
2.4.7 임피던스 값에 따른 도막의 방식 성능 35
3. 실험 방법 36
3.1 시험편 제작 36
3.2 Optical Microscope 37
3.3 가속노화 시험 38
3.3.1 Salt Spray test 38
3.3.2 Immersion test 39
3.4 교류 임피던스 측정 40
3.5 Adhesion(Pull-off) test 42
4. 결과 및 고찰 43
4.1 Optical microscope Analysis 43
4.2 가속노화 시험에 따른 EIS 저항값의 변화 45
4.3 부착력 시험 결과 (Pull-Off test) 52
5. 결론 55
Reference 57
- Degree
- Master
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해양구조물 도장에서 하드 페퍼링 有, 無에 따른 부착력 및 방식성능 연구.pdf
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