The use of noncovalently modified carbon nanotubes for preparation of hybrid polymeric composite materials with electrically conductive and lightning resistant properties

Abstract

In this work, approach to use of noncovalently modified carbon nanotubes is given for preparation of functional hybrid polymeric composite materials (HPCM) based on epoxy resin. Conductive glass-fiber plastics with resistivity in transverse and lengthwise direction 9.0Á3 10 2 and 30-50 Ohm cm, respectively, were obtained. The tetrafluoroethylene telomer and fluorocontaining organosilicon copolymer with amino groups were used as modifiers for carbon nanotubes. Thermal, electrical, and mechanical properties of the obtained materials were studied. The mechanism of the effect of noncovalent modification of carbon nanotubes on functional properties of HPCM was discussed. It was found, that type of modifier significantly affects the level of functional properties. The use of fluorocontaining organosilicon copolymer is more optimal in comparison with tetrafluoroethylene telomer. Thus, HPCM with carbon-fiber filler and this modifier has higher electrical conductivity and lightning strike resistance in comparison with nonmodified HPCM. This approach is promising to impart antistatic properties for glass-fiber plastics and increase lightning resistance of carbonfiber plastics.

Improvement of thermal stability and gamma‐ray absorption in microwave absorbable poly(methyl methacrylate)/graphene nanoplatelets nanocomposite

“…Hence the improvement of the physical properties (with the addition of GNP at 2 wt%) indicated that the effect of crosslink density on the modification of gamma‐ray and microwave adsorption properties of the nanocomposite reached an optimum level at of 2 wt% GNP. The rise of CNTs amount supports an increase in the electrical conductivity with the modification of microwave properties 46–48 …”

Morphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper composites

“…Nowadays, materials with properties of reflectivity and electromagnetic interference (EMI) shielding effectiveness (SE) have attracted intensive attention in aerospace, engineering, and telecommunication areas, all with civil and military applications 1–6 . Carbon nanomaterials such as carbon nanotubes (CNT), carbon nanofibers, graphite nanoplatelets, and carbon black 3,7–12 are good candidates for developing composites that attend the technological challenges and specifications of the market demands in the mentioned areas.…”

Effects of carbon nanotube/polymer interfacial bonding on the long‐term creep performance of nanophased glass fiber/epoxy composites

“…As per Yurkov et al, epoxy modified with functionalized CNT (FCNT‐COOH) showed better resistance against heat and humidity, unmodified epoxy showed 26% to 32% decrement in ultimate strength after boiling, whereas, FCNT‐COOH epoxy composite decreased by 16% to 17%. In his other article, he reported the effect of modifiers used for altering the CNT surface noncovalently, by using organosilicon fluorocontaining modifier he was able to improve the electrical conductivity and resistance against lightning of carbo‐fiber plastic composite . As reported by Maravi et al, mechanical and electrical properties of polyvinyl alcohol film (PVA) were enhanced by reinforcing it with thermally reduced graphene oxide (TRGO).…”