Fluoropolyether compounds that can be used as a lubricant, such as for magnetic recording media. The compounds have a terminal group that includes a phenol or benzene. The fluoropolyether compounds reduce the head to media distance while keeping comparable reliability in a hard disk drive compared to current industrial widely used fluoropolyether based lubricants.

The present disclosure provide for coatings, coated structures, methods of coating, methods of coating a structure, and the like. In an aspect, the coating is a tribocatalytically-active coating, where the tribocatalytically-active coating interacts with the hydrocarbon environment forming a protective carbon-based tribofilm on the surface of the coating, which can be actively formed (reformed) during use of the coated structure within the hydrocarbon environment.

A dry lubricant composition for a slide surface of a recreational slide is disclosed. The dry lubricant composition includes a resin, a lubricant, a thermal conductor, and a hardener. The resin may comprise a silicon or PTFE based Epoxy. The dry lubricant composition is configured to be applied to the slide surface to form a dry lubricant coating thereon. The resultant coefficient of friction between the dry lubricant coating and a ride vehicle for use with the slide is within a range of between about 0.03 to about 0.2.

Anti-friction composite material having: (A) polyimide substrate and (B) a coating layer containing a binder resin and a solid lubricant.

A solid lubricating coating film is used to realize galling resistance equal to or higher than a method using a dope compound regarding lubrication characteristics during make-up/break-out of oil country tubular goods. A threaded joint for oil country tubular goods includes a box having a thread and a pin having a male thread. A lubricating coating film including a solid lubricating coating film forms on a tightening surface of a thread portion of at least one component of the box and pin, the solid lubricating coating film is formed by dispersing a solid lubricant in a binder resin, 90 wt % or more of the binder resin is a polyamideimide resin, an average molecular weight of the polyamideimide resin is 20,000 or more and 40,000 or less, 80 wt % or more of the solid lubricant is polytetrafluoroethylene (PTFE), and an average molecular weight of the PTFE is 30,000 or less.

The present disclosure relates to a ureteral stent and a preparation method thereof. The ureteral stent has at least one pre-coating formed on its surface and at least one hydrophilic lubricating coating formed on the pre-coating. Preferably, the pre-coating and the hydrophilic lubricating coating are formed by photocuring, thermal curing, chemical reaction, physical adsorption, crystallization or freezing. By means of the technical solutions of the present disclosure, a stable and firm coating is formed on the surface of the ureteral stent with a more complicated shape, the friction force (the friction force of the 30.sup.th cycle is small, and the friction force of the 30.sup.th cycle/initial friction force is kept within 2 times) of the ureteral stent is greatly reduced, and the lubricating performance is greatly improved.

A recreational slide system is provided. The recreational slide system includes a slide and a ride vehicle configured to support a rider down the slide. The slide includes a slide body with a non-wet lubricated slide surface that extends between a top entrance of the slide and a bottom exit of the slide. The ride vehicle includes a fabric layer that forms a top surface configured to contact the rider and a mesh layer that forms a bottom surface configured to contact the slide surface. The coefficient of friction between the mesh layer of the ride vehicle and the non-wet lubricated slide surface is within a range of between about 0.03 to about 0.2.

Using an organic compound having a bottle brush structure, a material having softness and resilience and having excellent low-friction performance (SRT material) can be provided. Preferably, the SRT material contains a reinforcing filler, and may contain a lubricating liquid to be gelled.

The disclosure provides for a valve including a surface movably engaged with another surface. A coating is on the surface and is characterized by: a CoF of less than 0.1; a hardness in excess of 1,200 HVN; impermeability to liquids at pressures ranging from 15 and 20,000 psi; a surface finish of 63 or less; and a thickness ranging from 0.5 to 20 mils. The disclosure provides for material constructions including a continuous phase, including a transition metal, and a discontinuous phase, including a solid dry lubricant. The disclosure also provides for a method of depositing a coating that includes depositing a first layer of a coating onto a surface using electroplating, electroless plating, thermal spraying, or cladding, and then depositing a second layer of the coating onto a surface of the first layer using sputtering, ion beam, plasma enhanced chemical vapor deposition, cathodic arc, or chemical vapor deposition.

Embodiments herein relate to polyacrylic acid containing lubricious coatings for medical devices. In an embodiment, a lubricious coated medical device is included having a substrate and a first layer disposed over the substrate. The first layer can include a photoreactive polyvinylpyrrolidone, a non-photoreactive polyvinylpyrrolidone, and a crosslinking compound. A second layer can be disposed over the first layer, the second layer can include a poly(acrylic acid), and a non-photoreactive polyvinylpyrrolidone. The non-photoreactive polyvinylpyrrolidone of the second layer forms a complex with the poly(acrylic acid) of the second layer. The non-photoreactive polyvinylpyrrolidone of the second layer has a concentration existing as a gradient through a thickness of the second layer with a lower concentration at an outer surface of the second layer than at an inner surface of the second layer. Other embodiments are also included herein.