Electrical and mechanical properties of polyimide–carbon nanotubes composites fabricated by in situ polymerization

Temperature dependence of electrical conductivity in double-wall and multi-wall carbon nanotube/polyester nanocomposites

“…Therefore, it is more effective to employ CNTs with large aspect ratio instead of CB particles in spherical shapes to achieve a percolation threshold at comparatively lower filler contents. In the literature, reported amount of CNT loading within polymer matrices for a percolation threshold varies widely from less than 1% to over 10% in weight [14]. This relatively large range of the concentration is related with the parameters affecting the composite conductivities, such as aspect ratio and surface treatment of CNTs, orientation of nanotubes in the resin system, processing temperature and curing conditions [10].…”

“…In that manner, a number of theoretical percolation models have been proposed to identify the critical filler volume content, at which a conductive network is formed in polymers. In addition, temperature variation of conductivity is critical to investigate and transport mechanisms have been explained by various models, including Luttinger liquid, one dimensional disordered wire, activated process, variable range hopping and fluctuationinduced tunneling through the barriers between the metallic regions model [12][13][14][15][16][17][18][19][20][21][22].…”

Dispersion and Reinforcement of Nanotubes in High Temperature Polymers for Ultrahigh Strength and Thermally Conductive Nanocomposites

“…If these versatile polymers can be made electric conductive, their applications could be dramatically expanded into other important frontiers [54][55][56]. With great aspect ratios and excellent intrinsic conductive properties, nanotubes have been attempted to reduce surface resistivity of PI from the range of 10 6 -10 10 Ω [56] by several orders of magnitude.…”

“…If these versatile polymers can be made electric conductive, their applications could be dramatically expanded into other important frontiers [54][55][56]. With great aspect ratios and excellent intrinsic conductive properties, nanotubes have been attempted to reduce surface resistivity of PI from the range of 10 6 -10 10 Ω [56] by several orders of magnitude. However, owing to the strong van der Waals interaction, MWNTs tend to form into aggregates which invite poor dispersion in the polymer matrix and negative effects on the properties of the resulting composites [57][58][59][60][61][62][63][64][65][66][67][68].…”

A Study on Electrical and Thermal Properties of Polyimide/MWNT Nanocomposites

“…This causes local heating and, consequently, premature degradation of materials. [1][2][3] This work describes MWNT reinforced polyimide nanocomposites with a level of electrical conductivity sufficient to permit electrostatic discharge, as well as mechanical and thermal properties superior to that of the base polymer.…”