Syntactic foams are lightweight, high specific strength materials used in the aerospace and naval industries. Their utility is limited by their brittleness. The epoxy polymer matrix an epoxy/hollow glass microsphere (GMS) syntactic foam was modified using carboxyl-terminated butadiene-acrylonitrile (CTBN) rubber with aim to increase fracture toughness. microstructure properties were investigate...

C5F10O has been widely studied as a promising environmentally friendly substitute to SF6 in power equipment. Up now, the gas insulated equipment developed still uses same sealing materials insulation However, whether these are chronically compatible with always fundamental problem that perplexes industry and academia. In this study, thermally accelerated aging experiment on four rubber contacte...

The main limitation of polymers and subsequently of seals is their thermal resistance. Temperature rise on surfaces of bodies in contact due to frictional heating phenomena may influence considerably the tribological response and failure mechanisms of components. Moreover, high temperatures may cause structural changes of materials, as well as chemical reactions, oxidation and material degradat...

This paper investigated the mechanism of enhancing mechanical and tribological properties nitrile rubber (NBR) via addition nano-SiO2 on molecular scale. Molecular dynamics (MD) simulations were performed structure models pure NBR, NBR/SiO2, three-layer friction pairs. The results showed that hydrogen bonds interfacial interaction between NBR chains decreased fractional free volume nanocomposit...

The viscoelasticity of several polymers has been determined using dynamic mechanical analysis (DMA). For the same materials the sliding wear in multiple scratching along the same groove has also been determined. The materials studied were polycarbonate (PC), polystyrene (PS), styrene/ acrylonitrile (SAN), Surlyn, polyethersulfone (PES), acrylonitrile/butadiene/styrene (ABS), polypropylene (PP),...