Influence of carbon nanotubes on thermal expansion coefficient and thermal buckling of polymer composite plates: experimental and numerical investigations

Abstract

The first aim of this paper is to experimentally explore the effect of multi-walled carbon nanotubes (MWCNTs) on the coefficient of thermal expansion (CTE) of epoxy-based composites. Focusing on the obtained experimental data, two important conclusions can be drawn. 1) Though the CTE of carbon nanotubes (CNTs) is lower than that of neat epoxy, using more CNT does not necessarily decrease the CTE of epoxy polymer. 2) The optimum weight percent of CNT is 0.3 which can reduce the CTE of epoxy up to 33%. As the second goal of the present research work, thermal buckling analysis of rectangular carbon fiber-reinforced CNT/epoxy polymer (CFRCNTEP) laminated composite plates is performed numerically. To this purpose, first, using the obtained experimental data and micro-mechanical models, the thermo-elastic properties of structure are calculated. Then, based on the first-order shear deformation theory (FSDT) and by means of generalized differential quadrature (GDQ) method, the influence of CNTs on the critical buckling temperature of CFRCNTEP composite plates is investigated. The numerical results reveal that MWCNTs can strongly affect thermal buckling behavior of composite plates. It is observed that by adding 0.3 wt% CNTs into the matrix phase, the critical buckling temperature increases between 35 to 42%.

Thermal Deformation of PA66/Carbon Powder Composite Made with Fused Deposition Modeling

“…k th is thermal conductivity matrix. When the material is isotropic, the matrix can be expressed as Equation (8).…”

“…Adding the T700/M-epoxy increases composite mechanical strength. Kamarian et al added MWCNTs to the epoxy and observed the effects on the coefficient of the composite thermal expansion [8]. Adding MWCNTs to the epoxy decreased the coefficient of the composite thermal expansion.…”

Development of optimized triaxially electrospun titania nanofiber‐in‐nanotube core‐shell structure

“…nanostructured materials have attained much research interest due to its promising distinctive features such as large specific surface area, excellent organic adsorption capability, and good mechanical strength. [1][2][3][4][5][6][7][8][9][10][11] Nanomaterials include nanoparticles, [12][13][14] nanowires, 15 nanotubes, [16][17][18][19][20] and nanofibers. [21][22][23] Among these structures, nanofibers are the most diversified one-dimensional (1D) nanomaterials for the extensive research and commercial application due to its multifunctional and multi-tuned microstructures.…”

“…Nanomaterials include nanoparticles, 12–14 nanowires, 15 nanotubes, 16–20 and nanofibers 21–23 . Among these structures, nanofibers are the most diversified one‐dimensional (1D) nanomaterials for the extensive research and commercial application due to its multi‐functional and multi‐tuned microstructures 24,25 .…”

Nonlocal heat conduction in single‐walled carbon nanotubes

“…[ 7–12 ] These approaches show superior performance in coping with this problem than any other approach. Furthermore, several works studied the heat conduction in nanocomposites, [ 13–17 ] and nanostructures theoretically [ 18–21 ] and experimentally. [ 22–24 ]…”