표제지
Abstract
목차
제1장 서론 15
제2장 실험 20
2.1. 시약 및 재료 20
2.2. MXene의 분산 22
2.3. CNT/MXene/PDMS 복합재 제작 24
2.3.1. CNT 분산 24
2.3.2. MXene 분산 24
2.3.3. CNT/MXene/PDMS 복합재 제작 24
2.4. 특성 분석 26
2.4.1. 분산 조건에 따른 명암 분석 26
2.4.2. 형태학적 특성 분석(Morphological Property) 26
2.4.3. 분산 안전성 분석 (Dispersion Stability) 26
2.4.4. 화학적 특성 분석(Chemical Property) 27
2.4.5. 전기적 특성 분석 27
2.4.6. 기계적 특성 분석 27
2.5. 스트레인 센서 응용 분석 30
제3장 결과 및 고찰 31
3.1. MXene 분산 특성 분석 31
3.1.1. 합성 MXene의 형태적 특성 31
3.1.2. MXene의 분산 결과 33
3.1.3. MXene 분산에 따른 형태학적 분석 결과 36
3.1.4. MXene 분산에 따른 particle size 분석 결과 38
3.1.5. 분산에 따른 MXene layer 분석 결과 40
3.1.6. 화학적 특성 (UV-Visible spectrophotometer) 분석 결과 42
3.1.7. MXene 분산 안정도 분석 결과 44
3.1.8. MXene의 장기간 분산안정도 분석 결과 46
3.2. CNT/MXene 복합재 제작 49
3.2.1. CNT/MXene/PDMS 분산 안정성 분석 결과 49
3.2.2. CNT/MXene/PDMS 형태학적 특성 분석 결과 51
3.3. CNT/MXene/PDMS 복합재 특성 분석 53
3.3.1. 화학적 특성 분석 결과 53
3.3.2. 전기적 특성 분석 결과 55
3.3.3. 기계적 특성 분석 결과 60
3.4. 스트레인 센서 응용 63
3.4.1. 저항-인장 수명테스트 63
3.4.2. 스트레인 센서 응용 연구 68
제4장 결론 70
References 71
Table 1. Properties of The Solvent Used for Dispersion. 21
Figure 1. Wearable strain sensors applications 16
Figure 2. Conductive filers and percolation networks 18
Figure 3. Flow chart of MXene dispersion 23
Figure 4. Fabrication flow chart of CNT/MXene/PDMS composites 25
Figure 5. ASTM - D412 mini size of samples used for UTM analysis 29
Figure 6. SEM images of pristine MXene powder 32
Figure 7. Digital images of MXene solution, (a) Images of MXene dispersed by solvent and sonication time, (b) Contrast ratio analysis of... 35
Figure 8. SEM images of MXene particles according to solvent and sonication time (a) 0.5 hours, (b) 2.0 hours and (C) 6.0 hours 37
Figure 9. SEM images of MXene particles according to solvent and sonication time (a) 200x SEM image and (b) distribution of MXene... 39
Figure 10. SEM images of MXene layer according to solvent and sonication time (a) 50 kx sem image and (b) comparison graph of... 41
Figure 11. UV-visible spectrophotometric graphs of MXene dispersions in each solvent (a) 0.5 h, (b) 2 h sonication and (c)... 43
Figure 12. Turbiscan transmittance and backscatter graph for each solvent of MXene treated with sonication for 2 hours 45
Figure 13. Digital images (a) Weekly images of MXene dispersions in each solvent, (b) Contrast analysis of MXene dispersion in images, (c)... 48
Figure 14. Turbiscan transmittance and backscatter graphs of IPA dispersed CNT, CNT/MXene, and CNT/MXene/PDMS 50
Figure 15. SEM image of (a) 3 wt% CNT/7 wt% MXene, (b) 5 wt% CNT, 5 wt% MXene and (c) CNT/MXene/PDMS 52
Figure 16. ATR-FT-IR graphs by % of (a) CNT/PDMS, (b) MXene/PDMS, and (c) CNT/MXene/PDMS 54
Figure 17. Graphs of (a) surface resistance, (b) volume resistivity, and (c) electrical conductivity by % for CNT/PDMS and... 56
Figure 18. Impedance graphs (a) Sample size used for analysis, impedance comparison graph by % of CNT/PDMS and... 58
Figure 19. Graphs of (a) Stress-strain curves by % for PDMS, CNT/PDMS and CNT/MXene/PDMS. (b) Tensile strength, (c)... 61
Figure 20. Strain cycle test. Resistance change by % for (a) CNT/PDMS and (b) CNT/MXene/PDMS at 1,000 cycles, (c) The... 67
Figure 21. Example image when applied as a strain sensor (a) finger bending, (b) joint (elbow, knee) bending 69