Nitrogen-Doped Graphene Sheets as Efficient Nanofillers at Ultra-Low Content for Reinforcing Mechanical and Wear-Resistant Properties of Acrylic Polyurethane Coatings
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Preparation of NGS
2.3. Preparation of Acrylic WPU Composites with NGS
2.4. Characterization
3. Results and Discussion
3.1. Structural Characterization of NGS
3.2. Composite Films with NGS
3.3. Wear Resistance and Mechanical Properties
3.4. The Comparison between This Work and Others
3.5. The Model Schematic of Composites
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Samples | Element Content (at%) | Formula 1 | ||
---|---|---|---|---|
C | N | O | ||
NGS | 84.33 | 9.49 | 6.18 | C1N0.113O0.073 |
AGS | 95.27 | 0.86 | 3.87 | C1N0.009O0.041 |
Samples | DSC | DSR | |
---|---|---|---|
Tm-s (°C) | ΔHm-s (J/g) | Tg (°C) | |
0 wt% | 55.4 | 4.45 | 68.7 |
0.001 wt% | 69.9 | 6.68 | 80.0 |
0.003 wt% | 67.3 | 4.73 | 81.5 |
0.005 wt% | 68.6 | 4.61 | 83.0 |
0.007 wt% | 70.5 | 5.12 | 83.5 |
0.01 wt% | 70.6 | 6.29 | 84.1 |
0.03 wt% | 73.0 | 6.28 | 85.5 |
Material /Polymer | Filler | Content (wt%) | Result | Performance Improvement versus per 0.001 wt% Filler Content | Reference | |
---|---|---|---|---|---|---|
Mechanical Properties | Wear Resistance | |||||
Waterborne polyurethane | Nitrogen-doped graphene | 0.005 wt% | Ultimate tensile strength and Young’s modulus increased by 58.87% and 55% respectively | Weight loss reduced by 78.74% | Weight loss reduced by 15.75% | This Work |
Waterborne polyurethane | MWCNT | 0.3 wt% | Hardness increased by 4.4% | Wear rate and friction coefficient reduced by 50.21% and 20.00% | Wear rate and friction coefficient reduced by 0.167% and 0.067% | [37] |
Waterborne polyurethane | sulfonated graphene | 0.8 wt% | Tensile strength increased by 46.53%; Young’s modulus increased by 38.87% | Weight loss reduced by 88% | Weight loss reduced by 0.11% | [19] |
Waterborne polyurethane | Nano silica | 6.0 wt% | _ _ | Weight loss and friction coefficient reduced by 72.22% and 8.92% | Weight loss and friction coefficient reduced by 0.012% and 0.0015% | [38] |
Epoxy resin | Functionalized graphene | 0.5 wt% | _ _ | Wear rate reduced by 86.34% | Wear rate reduced by 0.173% | [39] |
Nylon 66 | Graphene /polytetraf- luoroethylene (PTFE) | 0.5 wt% graphene and 5% wt% PTFE | Young’s modulus increased by 9.37%; Hardness increased by 6.22% | Wear rate and friction coefficient reduced by 63.29% and 67.18% | Wear rate and friction coefficient reduced by 0.012% and 0.013% | [1] |
Epoxy resin | CNTs/GO/MoS2 | 1.25 wt% | _ _ | Wear rate and friction coefficient reduced by 95% and 90% | Wear rate and friction coefficient reduced by 0.076% and 0.072% | [40] |
polysiloxane | modified GO | 1.0 wt% | Micro-hardness and elastic modulus increased by 57% and 24% | macro-scratch resistance improved by 48% | macro-scratch resistance improved by 0.048% | [41] |
Waterborne polyurethane | Boron nitride (BN) | 2.0 wt% | _ _ | dynamic friction coefficient reduced by 22.6% | dynamic friction coefficient reduced by 0.011% | [12] |
Epoxy resin | graphene nanoplatelets (GNPs) and montmorillonite (MMT) nanoclay | 0.15 wt% GNPs/0.5 wt% MMT | Micro-hardness increased by 39.06% | weight loss, wear rate and friction coefficient reduced by 29.4%, 29.9%, and 32.8% | weight loss, wear rate and friction coefficient reduced by 0.045%, 0.046%, and 0.051% | [42] |
polyurethane/ silicone | graphene oxide (GO) functionalized by aniline oligomer (AOFG) | ~1.7 wt% AOFG | _ _ | friction coefficient reduced by 73.11% | friction coefficient reduced by 0.043% | [43] |
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Xu, H.; Liu, D.; Liang, L.; Tian, Z.; Shen, P. Nitrogen-Doped Graphene Sheets as Efficient Nanofillers at Ultra-Low Content for Reinforcing Mechanical and Wear-Resistant Properties of Acrylic Polyurethane Coatings. Crystals 2022, 12, 1820. https://doi.org/10.3390/cryst12121820
Xu H, Liu D, Liang L, Tian Z, Shen P. Nitrogen-Doped Graphene Sheets as Efficient Nanofillers at Ultra-Low Content for Reinforcing Mechanical and Wear-Resistant Properties of Acrylic Polyurethane Coatings. Crystals. 2022; 12(12):1820. https://doi.org/10.3390/cryst12121820
Chicago/Turabian StyleXu, Hui, Danlian Liu, Lizhe Liang, Zhiqun Tian, and Peikang Shen. 2022. "Nitrogen-Doped Graphene Sheets as Efficient Nanofillers at Ultra-Low Content for Reinforcing Mechanical and Wear-Resistant Properties of Acrylic Polyurethane Coatings" Crystals 12, no. 12: 1820. https://doi.org/10.3390/cryst12121820
APA StyleXu, H., Liu, D., Liang, L., Tian, Z., & Shen, P. (2022). Nitrogen-Doped Graphene Sheets as Efficient Nanofillers at Ultra-Low Content for Reinforcing Mechanical and Wear-Resistant Properties of Acrylic Polyurethane Coatings. Crystals, 12(12), 1820. https://doi.org/10.3390/cryst12121820