표제지
목차
국문요약 12
제1장 서론 13
1.1. 연구배경 13
1.2. 각 실험재료에 대한 이론적 배경 16
1.2.1. MCF(Milled Carbon Fibers)의 이해와 응용분야 및 제조회사 16
1.2.2. CNT의 이해와 응용분야 및 제조회사 21
1.2.3. Epoxy Resin의 이해와 응용분야 및 제조회사 25
1.2.4. Extender Pigment의 이해와 응용분야 및 제조회사 26
1.2.5. Hardner의 이해와 응용분야 및 제조회사 28
제2장 실험 31
2.1. 실험재료 31
2.1.1. 콜타르 피치계의 탄소 단섬유(MCF) 31
2.1.2. 결합재(Matrix) 및 희석제 31
2.1.3. 경화제(Hardner) 및 이소프로필 알코올 31
2.1.4. 체질안료(Extender Pigment) 및 안료 31
2.1.5. 화학약품(Chemicals) 31
2.2. 실험방법 32
2.2.1. 밀링된 탄소섬유(MCF)와 탄소나노튜브(CNT) 첨가 에폭시 수지의 점도 측정 32
2.2.2. 밀링된 탄소섬유(MCF)와 탄소나노튜브(CNT) 강화 복합도료 시료의 준비 33
2.3. MCF 또는 CNT 강화 복합도료 시료의 물성 분석 36
제3장 결과 및 고찰 38
3.1. MCF 및 CNT 혼합 에폭시 수지의 점도 38
3.2. MCF 및 CNT 보강 복합도료 시료의 표면형태 42
3.3. MCF 및 CNT 보강 복합도료 시료의 물성 43
3.3.1. Shore D 경도 43
3.3.2. 인장강도 52
3.3.3. 표면부식 58
제4장 결론 66
REFERENCES 68
ABSTRACT 73
Table 1. Krebs-stomer viscometer conversion table 33
Table 2. Amount(g) of carbon materials in composite paint specimens. Carbon materials percentage(%) is noted in () 34
Table 3. 40 μm MCF : Shore D hardness 45
Table 4. 40 μm MCF : Shore D hardness 46
Table 5. 120 μm MCF : Shore D hardness 47
Table 6. 120 μm MCF : Shore D hardness 48
Table 7. CNT : Shore D hardness 49
Table 8. CNT : Shore D hardness 50
Table 9. ad CNT : Shore D hardness 51
Table 10. 40 μm MCF : Tensile strength 54
Table 11. 120 μm MCF : Tensile strength 55
Table 12. CNT : Tensile strength 56
Table 13. ad CNT : Tensile strength 57
Fig. 1. Examples of large wastewater treatment facilities. 15
Fig. 2. Corrosion of concrete exposed to sulfuric acid for 60 day. 15
Fig. 3. Milled Carbon Fiber (MCF: Mitsubishi Chemical). 16
Fig. 4. Milled Carbon Fiber(MCF)[Shen Zhen Yataida High-Tech, Grade CFP-7-50]. 17
Fig. 5. Aircraft parts. 18
Fig. 6. Automotive parts. 18
Fig. 7. MCF added nonwoven fabric. 18
Fig. 8. Milled carbon fiber (MCF: Osaka Gas Chemicals). 19
Fig. 9. Milled carbon fiber (MCF: Mitsubishi Chemical). 19
Fig. 10. Milled carbon fiber (PX35/PX30, ZOLTEK). 20
Fig. 11. Milled carbon fiber (MCF: TEIJIN). 20
Fig. 12. Milled carbon fiber (FP-MCF-004, easycomposites, England). 21
Fig. 13. Comparison of high-strength and high-elasticity carbon nanotubes/polymer composite fibers and carbon fibers. 22
Fig. 14. TEM observations of MWCNT(CNT SP95, Carbon Nanotech). 24
Fig. 15. TEM observations of SWCNT (Jenotube 6A, JEIO). 24
Fig. 16. Typical epoxy resin structure. 25
Fig. 17. Epoxy resin (Liquid / Solid). 26
Fig. 18. Extender pigment. 27
Fig. 19. Krebs-stomer viscometer. 32
Fig. 20. (a) Milled carbon fiber (MCF)- and (b) Carbon nanotube (CNT)-reinforced epoxy resin composite paint specimens. 35
Fig. 21. Viscosities of epoxy resins mixed with MCFs (△: 40 μm, ○: 120 μm)at room temperature [If 120 μm is added, it agglomerates and... 40
Fig. 22. Viscosities of epoxy resins mixed with CNTs (▲: as-received, ●: dispersed in isopropyl alcohol (IPA) in advance) at... 41
Fig. 23. (a) Carbon nanofiber-reinforced epoxy resin composite specimens, (b) Scanning electron microscope (SEM) images of... 42
Fig. 24. Shore D hardness of specimens reinforced with 40 μm MCFs, soaking for 2 weeks in different H₂SO₄ concentrations. 45
Fig. 25. Shore D hardness of specimens reinforced with 40 μm MCFs, soaking for 2 weeks in different NaOH concentrations. 46
Fig. 26. Shore D hardness of specimens reinforced with 120 μm MCFs, soaking for 2 weeks in different H₂SO₄ concentrations 47
Fig. 27. Shore D hardness of specimens reinforced with 120 μm MCFs, soaking for 2 weeks in different NaOH concentrations. 48
Fig. 28. Shore D hardness of specimens reinforced with CNTs, soaking for 2 weeks in different H₂SO₄ concentrations. 49
Fig. 29. Shore D hardness of specimens reinforced with CNTs, soaking for 2 weeks in different NaOH concentrations. 50
Fig. 30. Shore D hardness of specimens reinforced with CNTs (dispersed in IPA in advance), soaking for 2 weeks in... 51
Fig. 31. Tensile strength of composite specimens reinforced with different amount of 40 μm MCFs, soaking for 2 weeks in... 54
Fig. 32. Tensile strength of composite specimens reinforced with different amount of 120 μm MCFs, soaking for 2 weeks... 55
Fig. 33. Tensile strength of composite specimens reinforced with different amount of CNTs, soaking for 2 weeks in... 56
Fig. 34. Tensile strength of composite specimens reinforced with different amount of CNTs (dispersed in IP A in... 57
Fig. 35. Surface degradation images of paint specimen soaking for 2 weeks: in water. 60
Fig. 36. Surface degradation images of paint specimen soaking for 2 weeks: without carbon nanofibers, in 8% sulfuric acid. 61
Fig. 37. Surface degradation images of paint specimen soaking for 2 weeks: 9.6% 120 μm MCFs reinforced composite, in 2%... 62
Fig. 38. Surface degradation images of paint specimen soaking for 2 weeks: 9.6% 120 μm MCFs reinforced composite, in 8%... 63
Fig. 39. Surface degradation images of paint specimen soaking for 2 weeks: 0.16% CNT reinforced composite in 8% sulfuric acid. 64
Fig. 40. Surface degradation images of paint specimen soaking for 2 weeks: 0.48% CNT (dispersed in IPA in advance) reinforced... 65