Insights into structural, thermal, electrical and mechanical properties of copper alumina reinforced chlorinated natural rubber nanocomposites

Abstract

Current research intended the fabrication of highly durable conducting rubber products of low cost and wide applicability in the field of electronics. Chlorinated natural rubber (Cl-NR) reinforced with copper alumina (Cu-Al2O3) nanocomposites were fabricated by a solvent-free and economically viable industrial compounding technique with special attention to structural, morphological, rheometric curing behaviour, flame retardancy, electrical conductivity, dielectric, thermal and mechanical properties. FT-IR spectra confirmed the presence of Cu-Al2O3 in Cl-NR. The XRD investigation showed the crystalline peaks of Cu-Al2O3 in Cl-NR nanocomposites. The SEM and TEM results indicated that the nanoparticles were uniformly dispersed into the chlorinated rubber in the nano regime. The DSC results indicated that the addition of nanoparticles into the rubber matrix increased the glass transition temperature of the composites. The conductive metal oxide particles in the rubber accelerate the vulcanization process, which could be more beneficial in the industrial sector. The AC conductivity, dielectric properties, tensile strength, modulus, tear strength, heat build-up and hardness of nanocomposites were greatly increased, whereas the elongation at break, abrasion loss and resilience were decreased with the addition of nanoparticles to the chlorinated natural rubber. These increased mechanical properties of rubber nanocomposites with improved processability, controlled morphology and electrical properties are important parameters in the designing of flexible flame retardant electronic devices, electromagnetic induction shielding and conducting adhesive materials.

Synthesis, characterization, conductivity, and gas‐sensing performance of copolymer nanocomposites based on copper alumina and poly(aniline‐co‐pyrrole)

“…This can be accounted to the diminishing of the amorphous nature of the polymer with the inclusion of Cu-Al 2 O 3 nanoparticles. [21] More specifically, the compact network structure developed in the copolymer matrix reduces the segmental mobility of the copolymer chain. The T m values of the copolymer are also increased to 247 and 258 C, respectively for 3 and 7 wt% composites.…”

Structure, properties, and antibacterial behavior of nickel oxide reinforced natural rubber nanocomposites for flexible electronic applications

“…5 The modified NR has better thermal stability, conductivity, and oil resistance than the pure NR. 6 The global scientific community has been researching rubber composites for the past few years. Several external fillers have been added to the rubber to enhance its inherent properties and boost its electrical, thermal, and flame resistance.…”

“…The broadness of the amorphous peak of NR is reduced and shifted from 2θ = 18.56 to 18.34 for 5 phr nanocomposite. The successful insertion of highly crystalline NiO in the NR matrix is demonstrated by the narrowing of the amorphous NR peak and the development of additional crystalline peaks at 2θ = 18.28, 21.5, 26.05, 30.13, 38.02, and 42.676 The amorphous NR peak is further reduced and relocated to 17.99 for the 10 phr composite along with the main crystalline NiO peaks. The outcomes are in line with the findings drawn from the UV-VIS spectra, which show that the nanoparticles effectively penetrate into NR.…”

Effect of Cu-Al2O3 nanoparticles on the performance of chlorinated polyethylene nanocomposites

“…14,15 Copper-based nanoparticles have attracted a lot of attention in recent years, particularly in the field of polymer composite manufacturing. 16,17 The incorporation of copper alumina nanoparticles into polymer improves its thermal stability and conductivity. 14,16 The compatibility of copper alumina with polymer matrices is a critical characteristic for optimizing the mechanical properties of polymers.…”