(398bp) Multicolored Triboluminescent Composites for Wind Utilization and Lubrication Failure Warning
AIChE Annual Meeting
2017
2017 Annual Meeting
Liaison Functions
Poster Session: General Topics on Chemical Engineering I
Tuesday, October 31, 2017 - 3:15pm to 4:45pm
Triboluminescence (TL) refers to the phenomenon that materials could emit luminescence when stimulated by mechanical activities including friction, compress, stretch, impact, bend, etc. [1,2] Compared with the traditional photoluminescence and electroluminescence, TL could utilize the extensively existed mechanical energy in daily life, avoiding the requirements of light and electricity as the excitation sources. Therefore, TL material is considered as a new generation of energy-saving, environmentally friendly, and sustainable luminescent material, showing promising applications in lighting, displaying, imaging and intelligent sensors [3,4].
For practical applications, TL materials should be further composited with elastic matrices which could enable its non-destructive luminescence [5,6]. The basic performance of the matrices determines the applications of TL materials. In this presentation, flexible polydimethylsiloxane (PDMS) and tough epoxy was employed as the polymer matrices. The fabricating processes of both PDMS and epoxy-based composites were optimized based on the mechanical and TL performance. The luminescence color of the composites was further manipulated by adjusting the TL components and their ratios. The structure and morphology of the flexible TL composites were further regulated based on the surface texture technique. Such design of flexible TL composites allow its effective response for wind energy, which is promising for wind utilization applications, e.g., gale warning and wind displaying. For the multicolored epoxy-based hard composites, they were further assembled in the bottom of lubricating film. The morphology and spatial dispersion of TL composites were designed and optimized. The introduction of TL composites showed no negative effects on the mechanical and tribological performance of the lubricating film. When the lubricating film wear to the TL layer in the bottom, it could emit luminescence driven by the friction behavior from mechanical equipment. The TL signals could be easily captured by naked eyes or simple detection equipment, presenting the self-warning activity to avoid major accidents and economic loss caused by lubrication failure.
For practical applications, TL materials should be further composited with elastic matrices which could enable its non-destructive luminescence [5,6]. The basic performance of the matrices determines the applications of TL materials. In this presentation, flexible polydimethylsiloxane (PDMS) and tough epoxy was employed as the polymer matrices. The fabricating processes of both PDMS and epoxy-based composites were optimized based on the mechanical and TL performance. The luminescence color of the composites was further manipulated by adjusting the TL components and their ratios. The structure and morphology of the flexible TL composites were further regulated based on the surface texture technique. Such design of flexible TL composites allow its effective response for wind energy, which is promising for wind utilization applications, e.g., gale warning and wind displaying. For the multicolored epoxy-based hard composites, they were further assembled in the bottom of lubricating film. The morphology and spatial dispersion of TL composites were designed and optimized. The introduction of TL composites showed no negative effects on the mechanical and tribological performance of the lubricating film. When the lubricating film wear to the TL layer in the bottom, it could emit luminescence driven by the friction behavior from mechanical equipment. The TL signals could be easily captured by naked eyes or simple detection equipment, presenting the self-warning activity to avoid major accidents and economic loss caused by lubrication failure.
Acknowledgements
The authors would like to thank the support from CAS Pioneer Hundred Talents Program.
References
[1] A. J. Walton, Advances in Physics, 1977, 26, 887-948.
[2] D. Peng, B. Chen and F. Wang, ChemPlusChem, 2015, 80, 1209-1215.
[3] J.-C. Zhang, C.-N. Xu, S. Kamimura, Y. Terasawa, H. Yamada and X. Wang, Optics Express, 2013, 21, 12976-12986.
[4] X. Wang, H. Zhang, R. Yu, L. Dong, D. Peng, A. Zhang, Y. Zhang, H. Liu, C. Pan and Z. L. Wang, Advanced Materials, 2015, 27, 2324-2331.
[5] C.-N. Xu, X.-G. Zheng, M. Akiyama, K. Nonaka and T. Watanabe, Applied Physics Letters, 2000, 76, 179-181.
[6] S. M. Jeong, S. Song, S. K. Lee and N. Y. Ha, Advanced Materials, 2013, 25, 6194-6200.