Transport and electrical properties of natural rubber/nitrile rubber blend composites reinforced with multiwalled carbon nanotube and modified nano zinc oxide

Abstract

As a surface modified zinc oxide, stearic acid‐coated nano zinc oxide (ZOS) has been prepared by sol‐gel method and was used along with N‐benzylimine aminothioformamide‐N‐cyclohexyl benzthiazyl sulfonamide binary accelerator system, multiwalled carbon nanotube (MWCNT) and sulfur for vulcanizing 20/80 natural rubber/nitrile rubber (NR/NBR) blend. Different formulations have been prepared by using 1–7 phr of MWCNT. Solvent transport and electrical properties of the rubber compounds have been investigated. The equilibrium solvent uptake (Q∞) decreased with increase in concentration of the filler due to the decrease in the free volume and the increase in tortuousity. The conductivities of the vulcanizates increased with increase in the dosage of MWCNT from 1 phr in NBCNT1 to 7 phr in NBCNT4 indicating the formation of percolating network of MWCNTs in the NBR/NR matrix. POLYM. COMPOS., 35:956–963, 2014. © 2013 Society of Plastics Engineers

Effect of reinforcement filler on vulcanization, diffusion, mechanical, and electrical properties of natural rubber

“…This also because of the incorporation of CB that forms aggregates which delay the solvent molecules to penetrate inside the matrix. This result quite agrees with Thomas et al 33…”

“…This also because of the incorporation of CB that forms aggregates which delay the solvent molecules to penetrate inside the matrix. This result quite agrees with Thomas et al 33 Electrical properties Figure 5 shows the dependence of the dielectric constant (e 0 ) on the frequency (log f) at 300 K for pure NR and that filled with the different content of CB. The dielectric constant of pure NR is frequency independent.…”

Evaluation of mechanical, thermal, electrical, and transport properties of MWCNT‐filled NR/NBR blend composites

“…Similarly as the CNT content increases the entropy change also increases. This shows the increased compatibility of the polymer and the filler .…”

“…). This can be due to the increase in segmental mobility of the polymer matrix at higher frequency level .…”

The Influence of Fire Retardant (Aluminum Hydroxide) Concentrations on EPDM Rubber Under Ɣ Irradiation

“…The addition of rigid filler particles, even in small amounts, to an elastomer, strongly influences its response to mechanical stimuli. Nano fillers are the ultimate choice in fillers because of their ability to modify properties at very low levels of incorporation [4].…”