Currently, electrospinning technology is the most used spinning technology. However, electrospinning exhibits low production rate and safety hazards, which has led to the development of the novel centrifugal spinning technology to extrude phase change fibres from composite solutions. The flexible composite phase change fibres based on Polyethylene glycol (PEG) and Polyvinylpyrrolidone (PVP) were prepared by centrifugal spinning. Moreover, carbon nanotubes acted as thermally conductive fillers to enhance the thermal conductivity of flexible composite phase change fibres. The microstructures of the fibres were observed with a scanning electron microscope (SEM). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to determine the thermal properties of the fibres. The results showed that the concentrations of PEG and PVP had different influences on the diameter and smoothness of fibres, and the energy storage effect increased with the increasing PEG content. In summary, flexible composite phase change fibres based on PEG and PVP have very good application prospects for thermal insulation.

当前，静电纺丝技术是最常用的纺丝技术。然而，静电纺丝具有较低的生产率和安全隐患，这导致了新型离心纺丝技术的发展，该技术从复合溶液中挤出了相变纤维。通过离心纺丝制备了基于聚乙二醇（PEG）和聚乙烯吡咯烷酮（PVP）的柔性复合相变纤维。此外，碳纳米管充当导热填料，以增强柔性复合相变纤维的导热性。用扫描电子显微镜（SEM）观察纤维的微观结构。差示扫描量热法（DSC）和热重分析（TGA）用于确定纤维的热性能。结果表明，PEG和PVP的浓度对纤维的直径和光滑度有不同的影响，并且随着PEG含量的增加，储能效果增强。综上所述，基于PEG和PVP的柔性复合相变纤维具有很好的隔热应用前景。