Thermal conductivity and properties of cyanate Ester/nanodiamond composites

Abstract

The aim of this study was to improve thermal conductivity, thermal stability, and mechanical properties of bisphenol A dicyanate ester with the addition of nanodiamond. Cyanate ester/nanodiamond composites containing various ratios of nanodiamond were prepared. Thermal stability and thermal conductivity of the samples were evaluated by thermogravimetric analysis, differential scanning calorimetry, and laser flash method, respectively. The samples were characterized with the analysis such as gel content, water absorption capacity, and stress-strain test. Hydrophobicity of the samples was determined by contact angle measurements. Moreover, the surface morphology of the samples was investigated by a scanning electron microscopy. The obtained results prove that the cyanate ester/nanodiamond composites have good thermal and mechanical properties and can be used in many applications such as the electronic devices, materials engineering, and other emergent.

Bisphenol S and bisphenol A cyanate ester/barium metaborate composites

“…Cyanate esters have attracted considerable attention due to their unique properties such as low water absorption, low dielectric constant and heat release rate, good strength, excellent adhesion to metals, glass, and carbon fibers, low out gassing in curing and high environment resistance . Because of these properties, cyanate ester‐based resins have been widely used as adhesives and matrixes for composites.…”

Enhanced thermal and hydrophobic surface properties of shape‐stabilized nanodiamond/fatty alcohol grafted poly(ethylene‐alt‐maleic anhydride) composite phase change materials

“…The second, between 270 and 470°C, is attributed to thermal degradation of the polymer main chain. Results show that the temperature corresponding to 50 wt% loss of samples were increased about 28°C with the addition of 2% nonodiamond . It was determined that the residuals %weight of the all samples are about 1%.…”

“…Most of these publications were related to metallic matrix materials (Al, Cu, and Ag) . Up to now there have been a limited number of publications where diamond grains have been successfully introduced into the polymer matrix resulting in significant improvements in the matrix properties .…”

Preparation and characterization of hybrid cationic hydroxyethyl cellulose/sodium alginate polyelectrolyte antimicrobial films

“…DSC results showed that the addition of cationic hydroxyethyl cellulose and sodium alginate increased the T g values of the samples. It could be because of 2 reasons: the increase in carboxylate segment concentration by increase of sodium alginate and the loss of mobility of polymer chains because of the decrease in free volume …”