CNT Based Epoxy Resin Composites for Conductive Applications

The cluster architecture of carbon in polymer nanocomposites observed by impulse acoustic microscopy

“…Epoxy–carbon nanocomposites were composed of an epoxy matrix containing small carbon particles of various origins. Epicote 828 epoxy resin, a medium‐viscosity resin produced from bisphenol A and epichlorhydrin (generously provided by Momentive Specialty Chemicals Inc., formerly Hexion Specialty Chemicals) with its own curing agent called A1 (being a modified TEPA), was employed as matrix material . Various kinds of small graphite particles were used as fillers.…”

“…Composite samples were fabricated by solidification of a graphite particle suspension in epoxy resin with the curing agent. The fabrication procedure was aimed at achieving the highest homogeneity of specimens . The procedure included: 1) vacuum degassing of a liquid epoxy resin for 48 h under a few millibar pressure; 2) preparation of a graphite nanofiller suspension in isopropyl alcohol and its sonication in an ultrasonic bath for 1.5 h; 3) hand mixing the liquid resin and graphite particle suspension in isopropyl alcohol; 4) evaporating entirely the alcohol at 150 °C and sonicating for 1.5 h to degas the new mixture; 5) adding the curing agent A1 and hand mixing it with the graphite–epoxy suspension for 7 min; and 6) curing the suspension for 24 h in air under normal conditions and for 4 h in an oven at 80 °C.…”

Electrical properties of carbon nanotubes/WS2 nanotubes (nanoparticles) hybrid films

“…This model can be applied for fitting of the electrical properties of different types of disordered systems (including carbon nanotubes arrays [11] and CNT based polymer composites [12]) in which large in atomic scale highly conductive regions divided by small insulating barriers. The low temperature saturation of the resistance can be explained by the tendency to saturate the dephasing time of the charge carriers inside an individual CNT observed in weakly disordered systems [13].…”

Properties of Functional Materials on Basis of Hybrid Polymer Composites with Nano-Carbon Additives

“…ȼ ɬɚɤɢɯ ɭɫɥɨɜɢɹɯ ɜɟɫɶɦɚ ɚɤɬɭɚɥɶɧɵɦɢ ɹɜɥɹɸɬɫɹ ɡɚɞɚɱɢ, ɫɜɹɡɚɧɧɵɟ ɫ ɪɚɡɪɚɛɨɬ-ɤɨɣ ɦɚɬɟɪɢɚɥɨɜ ɫ ɤɨɧɬɪɨɥɢɪɭɟɦɵɦɢ ɷɥɟɤɬɪɨɦɚɝɧɢɬ-ɧɵɦɢ ɯɚɪɚɤɬɟɪɢɫɬɢɤɚɦɢ, ɩɨɡɜɨɥɹɸɳɢɟ ɪɟɡɭɥɶɬɚɬɢɜɧɨ ɢɫɩɨɥɶɡɨɜɚɬɶ ɷɥɟɤɬɪɨɦɚɝɧɢɬɧɨɟ ɢɡɥɭɱɟɧɢɟ ɢ ɦɚɧɢɩɭ-ɥɢɪɨɜɚɬɶ ɢɦ, ɚ ɬɚɤɠɟ ɜɨɡɧɢɤɚɸɬ ɩɪɨɛɥɟɦɵ ɡɚɳɢɬɵ ɨɬ ɜɨɡɞɟɣɫɬɜɢɹ ɷɥɟɤɬɪɨɦɚɝɧɢɬɧɵɯ ɫɢɝɧɚɥɨɜ ɜ ɪɚɡɥɢɱɧɵɯ ɞɢɚɩɚɡɨɧɚɯ ɱɚɫɬɨɬ. ɗɮɮɟɤɬɢɜɧɨɟ ɪɟɲɟɧɢɟ ɬɚɤɨɝɨ ɪɨɞɚ ɡɚɞɚɱ ɡɚɱɚɫɬɭɸ ɩɨɞɪɚɡɭɦɟɜɚɟɬ ɢɫɩɨɥɶɡɨɜɚɧɢɟ ɩɨɥɢ-ɦɟɪɧɵɯ ɤɨɦɩɨɡɢɰɢɨɧɧɵɯ ɦɚɬɟɪɢɚɥɨɜ [4][5][6][7].…”