Dynamically vulcanized high-density polyethylene/nitrile butadiene rubber blends compatibilized by chlorinated polyethylene

Abstract

Thermoplastic vulcanizates (TPVs) based on high-density polyethylene (HDPE)/nitrile butadiene rubber (NBR) blends were prepared by dynamic vulcanization where chlorinated polyethylene (CPE) was used as a compatibilizer. The effects of CPE on mechanical properties, Mullins effect, dynamic mechanical properties, and morphology of the blends were investigated systematically. Experimental results indicated that CPE had an excellent compatibilization on the HDPE/NBR blends. Dynamic mechanical analysis studies showed that the glass transition temperature of NBR phase was slightly shifted toward higher temperature with the CPE incorporation, leading to the increasing interface compatibility. Mullins effect results showed that the compatibilized HDPE/NBR blend had relatively lower residual deformation and internal friction than that of HDPE/NBR blend, indicating the improvement of elasticity. Morphology studies showed that the size of the NBR particles was decreased with the existence of CPE; moreover, the fracture surface of HDPE/CPE/NBR TPV was relatively smoother than that of HDPE/NBR blend.

Nitrile rubber/peroxide treatment transformed recycled polyethylene into mechanically improved materials

“…Some reports described works on polyethylene/nitrile rubber blends that were compatibilized and treated with different additives and cross‐linkers, such as chlorinated polyethylene and sulfur. The treatments or modifications improved the polymers' mechanical performance, including tensile strength and impact resistance 19,31–33 . It was reported elsewhere that CaCO 3 in recycled feedstock played a vital role in increasing the mechanical performance of the rHDPE‐based composites 9 …”

“…The treatments or modifications improved the polymers' mechanical performance, including tensile strength and impact resistance. 19,[31][32][33] It was reported elsewhere that CaCO 3 in recycled feedstock played a vital role in increasing the mechanical performance of the rHDPE-based composites. 9…”

“…Acrylonitrile‐butadiene copolymer, popularly known as nitrile rubber (NBR), is regarded as a specialty polymer that is elastomeric and used to make various rubber products. Notably, NBR is used as an additive in several polymers, including HDPE, for developing thermoplastic rubbers with unique properties such as engine‐oil resistance and elastomeric behavior 19–21 . In addition, NBR is used to produce composite materials with fillers such as CaCO 3.…”

“…Notably, NBR is used as an additive in several polymers, including HDPE, for developing thermoplastic rubbers with unique properties such as engine-oil resistance and elastomeric behavior. [19][20][21] In addition, NBR is used to produce composite materials with fillers such as CaCO 3.…”

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

“…The poor conductivity of bare CPE is due to its high electrical resistance, making it less suitable for trace testing of electroactive substances. 6,7 Researchers regularly utilise reactive nanoparticles to enhance the characteristics of polymers as a novel method to overcome this difficulty. Unlike micro or macroscopic fillers, nanoparticles have a high surface-to-volume ratio, which intensifies filler-matrix and filler-filler interactions.…”