| Title | Preparation and Characterization of Flexible Smart Glycol/Polyvinylpyrrolidone/Nano-Al2O3 Phase Change Fibers |
| Authors | Zhang, Xiaoguang Wu, Bogang Chen, Guo Xu, Yunfei Shi, Tengteng Huang, Zhaohui Liu, Yangai Fang, Minghao Wu, Xiaowen Min, Xin |
| Affiliation | China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China Peking Univ, Beijing Innovat Ctr Engn Sci & Adv Technol, Beijing Key Lab Magnetoelect Mat & Devices, Dept Mat Sci & Engn,Coll Engn, Beijing 100871, Peoples R China |
| Keywords | THERMAL-ENERGY-STORAGE CONDUCTIVITY ENHANCEMENT NANOFIBER COMPOSITES POLYETHYLENE-GLYCOL CARBON-FIBER PERFORMANCE PCM HEAT GRAPHENE NANOCOMPOSITE |
| Issue Date | 7-Jan-2021 |
| Publisher | ENERGY & FUELS |
| Abstract | The development of flexible smart phase change fibers has been limited because of the low production rate and safety concerns of electrospinning. Therefore, a novel centrifugal spinning technology, which is a safe and large-scale fabrication approach, is employed to extrude flexible smart phase change fibers using polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP). Nano-Al2O3 was employed to enhance the thermal conductivity of flexible smart PEG/PVP phase change fibers. The flexible smart PEG/PVP/Nano-Al2O3 phase change fibers have a clear cylindrical fiber shape, no cross-linking, and uniform fiber axial distribution. The interactions in flexible smart PEG/PVP/Nano-Al2O3 phase change fibers involve physical loading in PEG, PVP, and Nano-Al2O3. The flexible smart PEG/PVP/Nano-Al2O3 9.0% phase change fibers have a latent heat of 50.7 J/g at the melting point of 46.7 degrees C. The flexible fibers have ideal thermal stability and thermal cycle stability, and the shape of flexible fibers remained stable during the phase-change process. The thermal conductivity of flexible smart PEG/PVP/Nano-Al2O3 9.0% phase change fibers was 3.05 times greater than that of PEG/PVP fibers. The flexible smart fibers are promising for applications in the field of thermal insulation. |
| URI | http://hdl.handle.net/20.500.11897/604281 |
| ISSN | 0887-0624 |
| DOI | 10.1021/acs.energyfuels.0c03370 |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 |
