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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 윤근병
- 발행연도
- 2019
- 저작권
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GO-ODA was obtained by reacting GO to octylamine (ODA), which oxidized graphite and the surface modification of MoS2-ODA was prepated by reacting by MoS2 and ODA. The structure and degree of intercalation of 2D-nanosheets are verified through analysis of FT-IR and X-ray diffraction analyzer.
To increase the content of 2D-nanosheets, a masterbatch containing 10 wt% 2D-nanosheets was manufactured by in-situ ethylene polymerization. In-situ ethylene polymerization was conducted by dispersing GO-ODA and MoS2-ODA in toluene and injecting cocatalyst (MAO) and metallocene catalyst ((n-BuCp)2ZrCl2).
The PE/2D-nanosheet composites were manufactured by melt mixing a commercial PE and masterbatch, thermal stability (Td10%) of PE/2D-nanosheet composites containing 3 wt% 2D-nanosheets by 30 oC and 12 oC for GO-ODA and MoS2-ODA, respectively, compared to thermal stability of commercial PE.
Compared with the tensile strength of commercial PE with PE/mGO and PE/mMoS2 composites containing 5 wt% 2D-nanosheet, the tensile strength of PE/mGO composite increased by 90 wt% and PE/mMoS2 composite increased by about 15%. The elongation at break of the composite containing MoS2-ODA has changed little, but the proportion of the composite containing GO-ODA has decreased dramatically.
Ethylene in-situ polymerization using metallocene catalyst is considered a suitable method for manufacturing masterbatch because it can effectively get a well-dispersion of 2D-nanosheets and increase its content. Masterbatch with GO or MoS2 is considered to be an appropriate method for producing PE with excellent thermal stability and high mechanical properties because of its well dispersion of GO or MoS2 in PE matrix.
To increase the content of 2D-nanosheets, a masterbatch containing 10 wt% 2D-nanosheets was manufactured by in-situ ethylene polymerization. In-situ ethylene polymerization was conducted by dispersing GO-ODA and MoS2-ODA in toluene and injecting cocatalyst (MAO) and metallocene catalyst ((n-BuCp)2ZrCl2).
The PE/2D-nanosheet composites were manufactured by melt mixing a commercial PE and masterbatch, thermal stability (Td10%) of PE/2D-nanosheet composites containing 3 wt% 2D-nanosheets by 30 oC and 12 oC for GO-ODA and MoS2-ODA, respectively, compared to thermal stability of commercial PE.
Compared with the tensile strength of commercial PE with PE/mGO and PE/mMoS2 composites containing 5 wt% 2D-nanosheet, the tensile strength of PE/mGO composite increased by 90 wt% and PE/mMoS2 composite increased by about 15%. The elongation at break of the composite containing MoS2-ODA has changed little, but the proportion of the composite containing GO-ODA has decreased dramatically.
Ethylene in-situ polymerization using metallocene catalyst is considered a suitable method for manufacturing masterbatch because it can effectively get a well-dispersion of 2D-nanosheets and increase its content. Masterbatch with GO or MoS2 is considered to be an appropriate method for producing PE with excellent thermal stability and high mechanical properties because of its well dispersion of GO or MoS2 in PE matrix.
목차
Ⅰ. 서론 1Ⅱ. 실험 41. 시약 42. GO-ODA 제조 53. MoS2-ODA 제조 54. In-situ 중합을 이용한 마스터배치 제조 85. PE/2D-나노시트 복합체 제조 86. 분석 9Ⅲ. 결과 및 고찰 111. GO-ODA 제조 112. MoS2-ODA 제조 163. In-situ 중합 193.1 공촉매의 양과 온도의 영향 193.2 열적 특성 243.3 기계적 특성 274. 마스터배치를 이용한 PE/2D-나노시트 복합체 324.1 열적 특성 324.1.1 열안정성 324.1.2 결정화도 및 녹는점 364.2 기계적 특성 394.2.1 인장시험 394.2.2 동적 기계 분석 444.3 형태학적 특성 48Ⅳ. 결론 50Ⅴ. 참고문헌 52Ⅵ. 초록 (영문) 60
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