A lubricant including a plurality of segments including a divalent center segment and two sidechain segments, each including a perfluoroalkyl ether moieties is provided in which a dewetting thickness of the lubricant may be determined based in-part on a segment weight average molecular weight of the segments. A magnetic recording medium and a magnetic data storage system including the lubricant are also provided.

A lubricant including a plurality of segments including a divalent center segment and two sidechain segments, each including a perfluoroalkyl ether moieties is provided in which a dewetting thickness of the lubricant may be determined based in-part on a segment weight average molecular weight of the segments. A magnetic recording medium and a magnetic data storage system including the lubricant are also provided.

A lubricant including a plurality of segments including a divalent center segment and two sidechain segments, each including a perfluoroalkyl ether moieties is provided in which a dewetting thickness of the lubricant may be determined based in-part on a segment weight average molecular weight of the segments. A magnetic recording medium and a magnetic data storage system including the lubricant are also provided.

A lubricant including a plurality of segments including a divalent center segment and two sidechain segments, each including a perfluoroalkyl ether moieties is provided in which a dewetting thickness of the lubricant may be determined based in-part on a segment weight average molecular weight of the segments. A magnetic recording medium and a magnetic data storage system including the lubricant are also provided.

A double-network (DN) ion gel of a polyurethane (PU)/1-methyl-3-allyl imidazole metal salt, and a preparation method and use thereof are provided. An ionic liquid with double bonds is modified using an inorganic metal salt, such that an anion of the ionic liquid is reacted with a metal of the inorganic metal salt to form a chelated metal ion to obtain a modified ionic liquid. The modified ionic liquid, a monomer, a cross-linking agent, a photoinitiator, an organic solvent, and a PU solution are used as raw materials, and subjected to photocuring and drying to obtain a DN ion gel, which not only shows excellent mechanical properties, but also exhibits desirable lubrication properties under dry friction conditions.

A double-network (DN) ion gel of a polyurethane (PU)/1-methyl-3-allyl imidazole metal salt, and a preparation method and use thereof are provided. An ionic liquid with double bonds is modified using an inorganic metal salt, such that an anion of the ionic liquid is reacted with a metal of the inorganic metal salt to form a chelated metal ion to obtain a modified ionic liquid. The modified ionic liquid, a monomer, a cross-linking agent, a photoinitiator, an organic solvent, and a PU solution are used as raw materials, and subjected to photocuring and drying to obtain a DN ion gel, which not only shows excellent mechanical properties, but also exhibits desirable lubrication properties under dry friction conditions.