Thermal Conductivity of Detonation Nanodiamond Hydrogels and Hydrosols by Direct Heat Flux Measurements.

ABSTRACT: The methodology and results of thermal conductivity measurements by the heat-flow technique for the detonation nanodiamond suspension gels, sols, and powders of several brands in the range of nanoparticle concentrations of 2-100% w/w are discussed. The conditions of assessing the thermal conductivity of the fluids and gels (a FOX 50 heat-flow meter) with the reproducibility (relative standard deviation) of 1% are proposed. The maximum increase of 13% was recorded for the nanodiamond gels (140 mg mL^-1 or 4% v/v) of the RDDM brand, at 0.687 ± 0.005 W m^-1 K^-1. The thermal conductivity of the nanodiamond powders is estimated as 0.26 ± 0.03 and 0.35 ± 0.04 W m^-1 K^-1 for the RUDDM and RDDM brands, respectively. Th

SUBMITTER: Usoltseva LO 

PROVIDER: S-EPMC8701344 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature