大氣壓 플라즈마 표면처리에 의한 Mark Ⅲ 방식의 LNG선 二次防壁用 Triplex system의 接着物性 向上에 관한 硏究
- Abstract
- A study on the improvement of adhesive properties of triplex system applied to Mark Ⅲ type LNG carrier by atmospheric pressure plasma treatment
Tae Jin Oh
Department of Industrial Chemistry, Graduate school,
Pukyong National University
Abstract
Recently as shipbuilding industry of china has been developed based on abundant labor and low-priced labor costs and complete support from a government, it is expected to be inevitable that domestic shipbuilding industry has to change type of ship to a higher value-added ship. also domestic shipbuilding industry needs to study constantly about differentiated technology and a competitive price of LNG carrier to keep their existing market share and to hold its place as a shipbuilding power since increased demand for alternative energy resources caused by exhaustion of petroleum resources and environment regulation is connected to growing needs for ships which carry liquefied natural gas.
The purpose of this study is to improve adhesive properties of triplex playing a key role for stability of Mark Ⅲ type LNG carrier by using atmospheric pressure plasm treatment getting the spotlight as effect of surface modification and surface cleaning.
The optimum condition of surface preparation was drawn by using contact angle measurement and ATR-FTIR, also shear strength and peel strength of specimen treated are evaluated by doing single lap shear test and peel off test.
Keyword: LNG carrier, Triplex, Atmospheric pressure plasma treatment
- Issued Date
- 2013
- Awarded Date
- 2013. 2
- Type
- Dissertation
- Publisher
- 부경대학교
- Affiliation
- 부경대학교 대학원
- Department
- 대학원 공업화학과
- Advisor
- 박진환
- Table Of Contents
- 목 차
1. 서론 1
2. 이론적 배경 3
2.1. LNG(Liquefied Natural Gas)선의 개요 3
2.1.1. LNG선의 정의 및 분류 3
2.1.1.1. 모스(moss)형 LNG선 4
2.1.1.2. 멤브레인(membrane)형 LNG선 4
2.2. LNG선 insulation system의 구성 재료 8
2.2.1. 멤브레인(SUS 304L) 8
2.2.2. 목재방벽(plywood) 8
2.2.3. 강화 폴리우레탄 폼(Reinforced Poly Urethane Form) 9
2.2.4. Insulation system 접착제(mastic glue) 9
2.3. 대기압 플라즈마에 의한 표면처리 11
2.3.1. 플라즈마의 정의 11
2.3.2. 플라즈마의 표면처리 효과 13
2.3.2.1. 고분자의 표면 활성화(surface activation of polymers) 13
2.3.2.2. 고분자의 표면 세정(surface cleaning of polymers) 14
2.3.3. 대기압 플라즈마의 응용 15
3. 실험방법 16
3.1. 최적의 표면처리조건을 도출하기 위한 선행연구 17
3.1.1. 접촉각 측정(contact angle measurement) 17
3.1.2. 표면 분석(surface analysis) 18
3.2. 극저온(-163℃) 접착물성의 평가 19
3.2.1. 2차 방벽(secondary barrier)의 제작 19
3.2.2. 극저온(-163℃) 전단강도의 평가 21
3.2.2.1. Aluminum support의 표면처리 21
3.2.2.2. Single lap shear test용 시험편의 제작 22
3.2.2.3. Single lap shear test 23
3.2.3. 극저온(-163℃) 박리강도의 평가 25
3.2.3.1. Peel off test용 시험편의 제작 25
3.2.3.2. Peel off test 26
3.2.4. 결과 해석 27
4. 실험결과 및 고찰 28
4.1. 최적의 표면처리시간을 도출하기 위한 선행연구결과 28
4.1.1. 접촉각 측정(contact angle measurement) 결과 28
4.1.1.1. 접촉각(contact angle)의 변화 28
4.1.1.2. 표면 자유에너지와 부착일의 도출 30
4.1.1.3. 극성 및 비극성 기여도의 변화 32
4.1.2. ATR(Attenuated Total Reflection) FT-IR 결과 34
4.1.3. SEM image 관찰 결과 34
4.2. 극저온(-163℃) 접착물성의 평가 결과 37
4.2.1. Single lap shear test 결과 37
4.2.1.1. 전단 강도(shear strength)의 평가 37
4.2.1.2. 파괴 모드(rupture mode)의 분석 37
4.2.2. Peel off test 결과 40
4.2.2.1. 박리 강도(peel strength)의 평가 40
4.2.2.2. 파괴 모드(rupture mode)의 분석 41
5. 결론 45
Reference 46
- Degree
- Master
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