Hybridization of a thermoplastic natural rubber composite with multi‐walled carbon nanotubes/silicon carbide nanoparticles and the effects on morphological, thermal, and mechanical properties

Abstract

The thermal conductivity and mechanical performance of a hybrid multi‐walled carbon nanotubes/silicon carbide (MWCNTs/SiC)‐reinforced thermoplastic natural rubber (TPNR) nanocomposite were investigated. TPNR was fabricated from polypropylene, natural rubber (NR) and liquid NR at a volume ratio of 70:20:10, respectively. The Young's modulus, the tensile strength, and the storage and loss modulus of the nanocomposites with a single filler of MWCNTs or SiC were enhanced compared with those of neat TPNR. The greatest improvements in these properties were achieved at a composition of 1.5 wt% SiC‐1.5 wt% MWCNTs‐reinforced nanocomposite. In addition, the thermal conductivity and specific heat capacity of the nanocomposites, determined using a laser flash technique, were improved in the 3 wt% SiC‐reinforced nanocomposite sample relative to those of the pure sample and the other reinforced nanocomposites. Based on these findings, MWCNTs and SiC could serve as suitable percolated networks of hybrid reinforcement fillers to achieve optimal thermal and mechanical properties in the TPNR matrix. POLYM. COMPOS., 40:E695–E703, 2019. © 2018 Society of Plastics Engineers

Preparation of MOF‐Zn@ZnO composite and its properties in SBR

“…From Figure 7B, it can be drawn from the graph, meanwhile, Figure 7C shows the relationship between the loss modulus ( E ″) of the filler and temperature, E ″ reflects the viscosity in the rubber composite component. [ 38 ] The higher the E ″, the greater the viscosity deformation of the composite material when it is subjected to external force, and the greater the contact area between the tire and the ground during driving, which can ensure the safety of the vehicle. In contrast, the use of MOF‐Zn@ZnO can increase the viscous component in the composite material, thereby increasing the contact area between the tire and the ground, thereby improving the safety of vehicle driving.…”

“…The tan δ values at 0°C and 60°C are generally used to evaluate the wet‐skid resistance and rolling resistance of composites. [ 38 ] It can be seen from the figure that the rolling resistance of ZnO C /SBR (0.1720) is greater than that of MOF‐Zn@ZnO/SBR (0.1152). It shows that MOF‐Zn@ZnO improves the rolling resistance of the composites and maintains the wet‐skid resistance of the composite to a large extent.…”

Gamma irradiation influence on mechanical, thermal and conductivity properties of hybrid carbon nanotubes/montmorillonite nanocomposites

“…Furthermore, as expected, the NC250 and NC200 nanocomposites displayed poor performance in terms of electrical conductivity compared to NC150. The explanation for this observation is the poor contact of the CNTs and montmorillonite particles (as revealed by TEM results) caused by their randomly agglomerated shape and the low aspect ratio of unity that enabled them to form conducting networks in the TPE matrix at high doses ( Paydayesh et al, 2019 ; Tarawneh et al, 2019 ). Furthermore, the degradation induced by the high-energy irradiation destroyed the crosslinked structure of the system ( Ahmed et al, 2012 ; Perera et al, 2004 ), which decreased the electrical conductivity of the TPE/CNTs/DK4 nanocomposites.…”

Mechanical, thermal, and conductivity performances of novel thermoplastic natural rubber/graphene nanoplates/polyaniline composites

“…The significant increments in the tensile strength, tensile modulus, and impact strength are due to the uniform dispersion of GNPs in the TPNR matrix as well as the extraordinary mechanical properties and flexible 2D architectural structure of GNPs. These reasons could contribute to the reinforcement efficacy of GNPs and the better interaction between GNPs and TPNR matrix in forming a typical continuous structure, thereby resulting effective load distribution from the TPNR to GNPs …”