From morphology of attrited copper/MWCNT hybrid fillers to thermal and mechanical characteristics of their respective polymer‐matrix composites: An analytical and experimental study

Abstract

Synergistic effect of copper and multiwalled carbon nanotube on thermal and mechanical properties of high-density polyethylene (HDPE)-matrix composite was evaluated. Attrition mill was employed to prepare the hybrid powder. Reinforcing the polymer-matrix was carried out using different contents of simultaneously (Sim) and separately (Sep) milled powders as hybrid fillers. X-ray diffraction and microscopy results show different trends of particle size for Sep and Sim affected by both milling time and volume fraction ratio. Thermal characterization indicates that conductivity was enhanced by 90% and thermal expansion was reduced to 53% of neat HDPE. Young's modulus and tensile strength were improved by 7.8 and 1.22 times of neat HDPE, respectively. Also, characteristics of Sim-reinforced composites exhibited better correlated relation with milling time compared with erratic behavior of Sep.

Size, Concentration and Content Effect of Copper/Graphite Hybrid Dopant on Mechanical, Thermal and Electrical Conductivity Characteristics of Unsaturated Polyester Resin

“…It was also seen that hybrid specimens break at higher tensile values than copper doped specimens alone. Similar results are given in the literature [5,7,8,19].…”

“…The CTE of Cu is 16.6 µm/ • C [39]. This result indicates that incorporation of Cu particles into the epoxy matrix decreased the CTE of the composites [19,[36][37][38].…”

“…The Hashin-Shtrikman [10] and the Lewis-Nielsen [1,2,[10][11][12][13][14][15][16][17] models are also investigated. For 3-phase system Lewis-Nielsen model has been extended as modified Lewis-Nielsen model and provides good convergence with the experimental hybrid systems [18][19][20]. Badakhsh and Park [19] investigated the thermal and mechanical properties of highdensity polyethylene (HDPE)-matrix reinforced coppercarbon nanotube filler composite.…”

“…For 3-phase system Lewis-Nielsen model has been extended as modified Lewis-Nielsen model and provides good convergence with the experimental hybrid systems [18][19][20]. Badakhsh and Park [19] investigated the thermal and mechanical properties of highdensity polyethylene (HDPE)-matrix reinforced coppercarbon nanotube filler composite. Characterization results indicate the increase in TC and reduction in thermal expansion.…”

Improvements in thermal conductivity and mechanical properties of HDPE/nano‐SiC composites by the synergetic effect of extensional deformation and ISBS

“…Preparation of thermally conductive composites based on high‐density polyethylene (HDPE) with the addition of thermal conductivity fillers can improve the performance of polymer parts and extend its range of applications. Due to their high thermal conductivity and low coefficient of thermal expansion, thermal conducting fillers can be used as heat‐conducting bridges in HDPE . However, in general, the addition of high content of thermal conducting fillers often decreases the mechanical properties of the composites .…”