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The tribological effects of tetraalkylphosphonium phosphate ionic liquids (PP-ILs) as lubricants and lubricant additives of multialkylated cyclopentanes (MACs) was evaluated in vacuum (10 −4 Pa) by a vacuum four-ball tribometer. Results showed that the transient seizure-like high friction appearing for MACs could be effectively eliminated by neat PP-ILs or by adding the PP-ILs with long alkyl...
The multi-walled carbon nanotubes (MWCNTs) are functionalized by self-assembled surfactant layers after sonication in anionic surfactant sodium dodecyl sulfate (SDS) aqueous solution. The tribological properties of the SDS-functionalized MWCNTs as additive in water-based lubricants were evaluated with a four-ball tester. The results show that the SDS-functionalized MWCNTs exhibit good anti-wear and...
The solubility of a typical UV-absorbing stabiliser has been measured in a series of poly(ester-block-ether)s copolymers (PEBE) with different ratios of hard and soft blocks. The solubility is higher in the PEBEs than in polypropylene and increases with the amount of polyether in the PEBE. The composition dependence suggests that the additive is at least ten times more soluble in the soft polyether...
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