Science Daily June 6, 2023
Researchers in China constructed uniaxial-polyvinyl alcohol/nanodiamond (U-PVA/ND) and coaxial-polyvinyl alcohol/nanodiamond (C-PVA/ND) composite fiber films with different microscopic morphologies by uniaxial and coaxial electrospinning. The results showed that the thermal conductivities of U-PVA/ND and C-PVA/ND composite fibers with 60 wt % ND content are 71.3 and 85.3 W m–1 K–1, respectively, which were 171.2 and 205.1 times greater than that of the pure PVA fiber film. The maximum thermal decomposition temperature (Tmax) and volume resistivity of the C-PVA/ND composite fiber film were 364.3 °C and 2.29 Ă— 1015 Ω·cm, respectively, demonstrating the excellent thermal stability and electrical insulation of the composite fiber film. According to the researchers their experiment results provided strong evidence of electrospinning technology for the preparation of highly thermally conductive composites and thermally conductive films can be used as the outer layer of electronic components to accelerate their heat dissipation and extend their service life… read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: ACS Appl. Nano Mater. 2023, 6, 10, 8358–8366, May 17, 2023