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논문 기본 정보

자료유형
학위논문
저자정보

서대경 (경북대학교, 경북대학교 대학원)

지도교수
배진석
발행연도
2015
저작권
경북대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

초록· 키워드

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These days, super fiber reinforced composite materials are widely used in many versatile industries. Due to FRP’s amazing mechanical properties, Composite materials are applied to many industry fields. Composite materials are also called Fiber-reinforced plastics (FRP). Basically, FRP is composed of reinforcing material and matrix. Furthermore, these are combined with each other by mechanical & chemical bonding. For this reason, the composition in composite materials makes FRP have high performance. There have been many attempts to produce high-mechanical properties FRP materials in the world and numerous domestic companies have tried to keep up with excellent manufacturing technology in this field. However, technology gap between overseas and domestic manufacturing companies still exists.
In this study, we have made 2 different types of composite materials in order to research comparison of FRP’s performance. Carbon fiber, Aramid fiber and Glass fiber are prepared for performing experiment and RIM (Resin Injection Molding) method was utilized. 2 kinds of fiber-reinforced material samples are made in the same way. Before making FRP products, the best injection molding condition such as temperature, time was established and ratio of epoxy to hardener was discussed. First, mechanical & chemical properties evaluation of different fiber (Carbon, Aramid) reinforced plastics was performed and we also observed the fact that the number of reinforcing fiber composed in FRP materials has effect on FRP’s properties.
In conclusion, the results verified the tendency of composite products using different reinforcing materials and number of layers toward mechanical & chemical properties.

목차

목 차
List of Tables ·····················································Ⅴ
List of Figures ····················································Ⅵ
Ⅰ. 서 론 ························································1
1. 복합재료의 정의 ················································1
2. 연구개발의 필요성 ·············································2
3. 국내 · 외 기술 동향 ···········································3
3.1. 국내 기술 및 시장 동향 ·································3
3.2. 국외 기술 및 시장 동향 ·································4
4. 연구목표 ··························································5
Ⅱ. 관련 이론 ·······················································6
1. 복합재료의 구성 ·················································6
2. 복합재료의 종류 및 응용분야 ·································7
3. 복합재료 제조 및 성형공법 ····································9
3.1. 예비성형체 제조방법 ·····································11
3.1.1. SMC (Sheet Molding Compound) ···········11
3.1.2. BMC (Bulk Molding Compound) ···········12
3.1.3. Prepreg(프리프레그) 제조 ·····················13
3.2. 본성형체 제조방법 ···································14
3.2.1. Autoclave 성형 ·······························14
3.2.2. RTM (Resin Transfer Molding) 공정 ·······14
3.2.3. Hand Lay-up ·································15
3.2.4. 인발성형 (Pultrusion Process) ···············16
Ⅲ. 실험 ··························································17
1. 실험재료 및 도구 ··············································17
1.1. 강화 재료 (Reinforcing material) ·····················17
1.1.1. 탄소 섬유 ······································17
1.1.2. 아라미드 섬유 ··································18
1.2. 기지 재료(Matrix material) ····························19
1.3. 성형기 ···················································20
2. 복합재료 성형 ··················································25
2.1. 시편제작 ·················································25
2.2. 섬유강화 복합재료 성형································26
2.3. 실험 계획 ···············································28
2.4. 섬유강화 복합재료 성형전 기초테스트 ·············29
2.4.1. 수지배합비에 따른 물성변화 ·················29
2.4.2. 경화조건 ········································30
3. 특성분석 ·························································32
3.1. 수지 분석 ·················································32
3.1.1. DCS (시차주사 열량측정법) 분석 ···········32
3.1.2. 온도에 따른 점도 분석 ·······················32
3.1.3. FT-IR 분석 ······································33
3.2 복합재료 및 강화섬유 물성평가 ······················34
3.2.1. 인장강도 ·········································34
3.2.2. 층간전단시험 ····································34
3.2.3. 굴곡강도 ·········································34
3.2.4. 충격강도 ·········································34
3.2.5. 열적안정성 ······································35
3.2.6. SEM 측정 ·······································35
Ⅳ. 결과 및 고찰 ·················································36
1. 수지분석 ·························································36
1.1. DSC 분석 ················································36
1.2. 온도에 따른 점도 분석 ·································39
1.3. FT-IR 분석 ···············································41
2. 물성평가 ·························································43
2.1. 인장강도 ·················································43
2.2. 층간전단시험 ············································45
2.3. 굴곡강도 ·················································46
2.4. 충격강도 ·················································47
2.5. 열적안정성 ···············································48
2.6. SEM 측정 ················································49
참고문헌 ···························································50
(Abstract) ··························································53

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