Disclosed is a thin-wall bonded self-lubricating plate, the composite material structure thereof being composed of a surface self-lubricating layer, an intermediate bonding layer, and a metal backing layer. The surface self-lubricating layer includes polytetrafluoroethylene, ultrahigh molecular weight polyethylene, etc. The surface self-lubricating layer thereof is thicker than an ordinary sintered self-lubricating material, thereby reducing vibration and prolonging the service life. Components, such as bushings, gaskets, sliding plates, composite bearings and other special-shaped members, made of the thin-wall bonded self-lubricating plate, have broad application prospects in low-speed rotation and relative sliding parts of vehicles, general machinery, office furniture, etc.

Disclosed is a thin-wall bonded self-lubricating plate, the composite material structure thereof being composed of a surface self-lubricating layer, an intermediate bonding layer, and a metal backing layer. The surface self-lubricating layer includes polytetrafluoroethylene, ultrahigh molecular weight polyethylene, etc. The surface self-lubricating layer thereof is thicker than an ordinary sintered self-lubricating material, thereby reducing vibration and prolonging the service life. Components, such as bushings, gaskets, sliding plates, composite bearings and other special-shaped members, made of the thin-wall bonded self-lubricating plate, have broad application prospects in low-speed rotation and relative sliding parts of vehicles, general machinery, office furniture, etc.

A sliding material composition comprising a polymer component comprising (A) a high-density polyethylene and (B) an olefin block copolymer; and (C) a silane coupling agent; wherein the Si content is 0.1 to 15% by mass based on the mass of the entire sliding material composition. The sliding material composition has the same level of slidability as a resin to which particles are added.

A sliding material composition comprising a polymer component comprising (A) a high-density polyethylene and (B) an olefin block copolymer; and (C) a silane coupling agent; wherein the Si content is 0.1 to 15% by mass based on the mass of the entire sliding material composition. The sliding material composition has the same level of slidability as a resin to which particles are added.

A sliding member in which a sliding layer is capable of exhibiting excellent sliding characteristics in terms of seizure resistance, wear resistance and heat resistance.

A method for manufacturing the sliding member of the present teachings is a method for manufacturing a sliding member to manufacture a sliding member sliding with a mating material. The manufacturing method includes irradiating particulate ultra high molecular weight polyethylene with radiation rays in a sealed state, and crosslinking the ultra high molecular weight polyethylene, preparing a composition for a sliding layer containing a solid lubricant and a binder resin, and forming a sliding layer sliding with the mating material by providing the composition for a sliding layer on a base material, and obtaining the sliding member. The solid lubricant includes the ultra high molecular weight polyethylene crosslinked during the irradiating and the crosslinking.

A sliding member in which a sliding layer is capable of exhibiting excellent sliding characteristics in terms of seizure resistance, wear resistance and heat resistance.

A method for manufacturing the sliding member of the present teachings is a method for manufacturing a sliding member to manufacture a sliding member sliding with a mating material. The manufacturing method includes irradiating particulate ultra high molecular weight polyethylene with radiation rays in a sealed state, and crosslinking the ultra high molecular weight polyethylene, preparing a composition for a sliding layer containing a solid lubricant and a binder resin, and forming a sliding layer sliding with the mating material by providing the composition for a sliding layer on a base material, and obtaining the sliding member. The solid lubricant includes the ultra high molecular weight polyethylene crosslinked during the irradiating and the crosslinking.

The present invention relates to a lubricant comprising a liquid ethylene copolymer which comprises in polymerized form 20 to 60 wt % of ethylene; and at least 20 wt % of an acrylate, which is selected from C1-C22 alkyl (meth)acrylate. It further relates to the liquid ethylene copolymer; and to a method for reducing friction between moving surfaces comprising the step of contacting the surfaces with the lubricant or with the ethylene copolymer.

The present invention relates to a continuous high-pressure polymerization process for the preparation of a liquid ethylene copolymer which comprises in polymerized form 20 to 60 wt % of ethylene; and at least 20 wt % of an acrylate, which is selected from C.sub.1-C.sub.22 alkyl (meth)acrylate, where a monomer feed comprising the ethylene and the acrylate is polymerized in the presence of at least 2 wt % of a chain transfer agent. The invention further relates to the liquid ethylene copolymer obtainable by the polymerization process; and to a lubricant comprising the liquid ethylene copolymer obtainable by the polymerization process; and to a method for reducing friction between moving surfaces comprising the step of contacting the surfaces with the lubricant or with the ethylene copolymer.

A lubricating oil composition includes an ethylene/α-olefin copolymer (A) having 70 to 90 mole % of structural units derived from ethylene and an intrinsic viscosity [η] of 0.3 to 1.0 dl/g.

A lubricating oil composition includes an ethylene/α-olefin copolymer (A) having 70 to 90 mole % of structural units derived from ethylene and an intrinsic viscosity [η] of 0.3 to 1.0 dl/g.