摘要:
A lubricant including an ionic liquid including a conjugate base and a conjugate acid, wherein the conjugate acid includes a group including a hydroxyl group and a group including a straight-chain hydrocarbon group having 6 or greater carbon atoms, and a pKa of an acid that is a source of the conjugate base in acetonitrile is 10 or less.
摘要:
A process for drawing wire employing a lubricant comprising perfluorocarbon compounds (PFCs), including aliphatic perfluorocarbon compounds ( alpha -PFCs) having the general formula CnF2n+2, perfluoromorpholines having the general formula CnF2n+1ON, perfluoroamines (PFAs) and highly fluorinated amines (HFAs), and perfluoroethers (PFEs). Such fully and highly fluorinated carbon compounds exhibit a very high degree of thermal and chemical stability due to the strength of the carbon-fluorine bond. Further, because the compounds are fully fluorinated, and therefore do not contain chlorine and bromine, they have zero ozone depletion potential (ODP). Further, because the compounds are photochemically non-reactive in the atmosphere, they are not precursors to photochemical smog and are exempt from the United States Environmental Protection Agency (EPA) volatile organic compound (VOC) definition. Further, because they are volatile, the compounds are easily removed at the end of the process without need for an additional cleaning step. The process provides wire at significantly higher production speeds and longer die life with improved quality and less byproduct debris.
摘要:
By reacting 3,3,4,4-tetrafluoro-2-(trifluoromethyl)-1,2-oxazetidine (I) with a Lewis acid, in particular SbF₅ or AsF₅, the fluorinated compounds (II), (III) and (IV) are obtained:
摘要:
A fullerene derivative, used as a lubricant, includes, in a molecule: a fullerene backbone; and n pyrrolidine rings each being condensed to the fullerene backbone, each of the pyrrolidine rings including one aryl group including a group including m perfluoropolyether chains, "m" being an integer from 2 to 5 and "n" being an integer from 1 to 5.
摘要:
Disclosed is a method for adjusting the viscosity of a salt having a melting point below 100°C at a normal pressure (called an ionic liquid), characterized in that a compound containing at least 0.1 mol of functional groups per 100 grams of compound is added to the ionic liquid, said functional groups being selected from among acid groups, acid amide groups, amino groups, ammonium groups, and hydroxyl groups.
摘要:
There are provided a solid lubricant having an island-and-sea structure, which, with the sea phase strengthened, remains free of troubles such as chipping even in use under high load conditions, and a sliding member having the solid lubricant embedded therein. The solid lubricant comprises 1 to 10% by volume of a polyethylene resin, 20 to 60% by volume of a hydrocarbon-based wax, 10 to 60% by volume of melamine cyanurate, 5 to 15% by volume of a polyamide resin, and 2 to 10% by volume of a modified polyethylene resin. The sliding member has the solid lubricant embedded in pores or grooves formed in a sliding surface of the sliding member body.
摘要:
A lubricant composition comprising following ingredients (a) and (b) is disclosed. (a) at least one compound represented by formula (1) (b) at least one compound represented by formula (2)