Due to their high compressibility and resilience, nanofibrous aerogels (NFAs) have been proven to have positive insluative impacts on various applications with electronics and material damping. Up until this study, the fabrication of such nanofibers had proven to be very difficult. The scientists of this study homogenized nanofibre membranes, PAN/BA-a and SiO2 to create a nanofiber dispersion. This nanofiber dispersion was then freeze-dried to create uncrosslinked NFAs. The NFAs ...
Author(s): Bin Ding, Jianlong Ge, Jianyong Yu, Xiaomin Tang, Yang Si
Using the Transient Plane Source technique, various geopolymers, metakaolin-derived sodium (Na), sodium-potassium (NaK) and potassium (K), were tested to determine the effect of varying environmental conditions, such as temperature and humidity, on thermal conductivity. The results concluded that the thermal properties of the geopolymers derived from metakaolin are not greatly affected by the Si/Al ratio in the as-cured state. When the sodium geopolymers were tested at 50% relative humidity, the ...
Author(s): G. C. Lukey, J. S. J. van Deventer, P. Duxson
In this paper, researchers investigated the effects of multi-walled carbon nanotubes (MWNTs), on the thermal conductivity and phase change enthalpy of palmitic acid (PA), a solid to liquid phase change material. The research concluded that as the concentration of MWNTs is increased, the thermal conductivity of the composite increases, compared to that of PA alone. Also in this study, researchers investigated the effects of various MWNTs surface modifications, on the ...
Author(s): D. W. Yang, F. Xu, J. L. Zeng, L. X. SUn, L. Zhang, X. F. Zhang, Z. Cao
In this experiment, the thermal conductivity of several composites, with varying matrix composition and boron nitride nanotubes fillers, was investigated. Poly(methyl methacrylate), polystyrene, poly(vinyl butyral) and poly(ethylene vinyl alcohol) were the matrix compositions analyzed. The results indicated that with the addition of the boron nitride nanotube fillers, there was a 20-fold increase in the thermal conductivity of the polymer. Several other properties were analyzed alongside of thermal ...
Author(s): C. Tang, C. Zhi, D. Golberg, H. Kuwahara, T. Terao, Y. Bando
In this research, the effect of four different coupling agents on the thermal conductivity of an aluminum particle reinforced epoxy composite, was studied. The results concluded that with an increasing concentration of aluminum particles in the epoxy, an increase in the thermal conductivity of the composite was noted. Prior to being treated with the coupling agents, the composites experienced a thermal conductivity reading of 1.03 W/mK. Post treatment, the thermal ...
Author(s): W. Zhou
