7 documents found, page 1 of 1

Surface Roughness Influence on Tribological Behavior of HiPIMS DLC Coatings

Custom-Tailored Cross-Cylinder Tribotest to Emulate Wear Mechanism in Drilling ...

Structural, thermal, and mechanical characterisation of PEEK-based composites i...

Thermal, thermo-mechanical and mechanical properties of four different commercially available polyetheretherketones (PEEK) based materials were investigated. PEEK matrix was either modified and/or reinforced with carbon fibres, graphite and/or PTFE. Impact strength was measured at three different temperatures: 25 ◦C, 100 ◦C, and 195 ◦C. At 25 ◦C, thermal stability and mechanical properties, including the elasti...

Graphene oxide versus graphite and chemically expanded graphite as solid lubric...

Graphene oxide (GO), chemically expanded graphite (CEG) and graphite were evaluated as solid lubricant for ultrahigh molecular weight polyethylene composites. Under dry conditions, the addition of all solid lubricants increased the coefficient of friction by up to 38%. For the composites corrugated stick–slip features were observed which correlate with a decrease in matrix degree of crystallinity. GO had the lo...

Chemically expanded graphite-based ultra-high molecular weight polyethylene nan...

Chemically expanded graphite (CEG) has recently been identified as promising reinforcement for polymer composites with the ability for commercial up-scaling. In this work, silane and polydopamine functionalized CEG were successfully synthesized and employed to prepare ultra-high molecular weight polyethylene (UHMWPE) composites with an enhanced interfa- cial compatibility. Characterisation of the functionalized ...

Breakdown into nanoscale of graphene oxide: Confined hot spot atomic reduction ...

Nano-graphene oxide (nano-GO) is a new class of carbon based materials being proposed for biomedical applications due to its small size, intrinsic optical properties, large specific surface area, and easy to functionalize. To fully exploit nano-GO properties, a reproducible method for its production is of utmost importance. Herein we report, the study of the sequential fracture of GO sheets onto nano-GO with co...

Graphene oxide modified with PMMA via ATRP as a reinforcement filler

Graphene is a two-dimensional new allotrope of carbon, which is stimulating great curiosity due to its superior mechanical, electrical, thermal and optical properties. Particularly attractive is the availability of bulk quantities of graphene (G) which can be easily processed by chemical exfoliation, yielding graphene oxide (GO). The resultant oxygenated graphene sheets covered with hydroxyl, epoxy and carboxyl...