摘要:
A sliding member (1) includes: a back metal layer (2); optionally a porous metal layer (6); and a sliding layer (3). The sliding layer includes: a synthetic resin matrix (4); graphite particles (5) dispersed in the matrix (4) having a volume ratio of 5-50 % of the sliding layer; optionally 1-20 volume % of one or more solid lubricants; and optionally 1-10 volume % of one or more fillers. The graphite particles are composed of spheroidal particle (51) and flake-like particles (52) having a volume ratio of 10-40 % of total graphite particles (5). The spheroidal particles have a cross-sectional structure with a plurality of AB planes laminated along a curved surface. The flake-like particles have a cross-sectional structure with the AB planes laminated in a thickness direction. The spheroidal particles have an average particle size of 3-50 µm, and the flake-like particles have that of 1-25 µm.
摘要:
A particulate composite lubricant for powder metallurgy comprises: first discrete particles comprising at least about 90 wt % of a fatty primary monoamide wax, being substantially free of fatty bisamide wax, and being at least partially coated with metal oxide nanoparticles and second metal-stearate free discrete particles comprising a fatty bisamide wax. A particulate composite lubricant for powder metallurgy can comprise: a Montan acid ester wax and at least one fatty amide wax comprising at least one of a fatty monoamide wax and a fatty bisamide wax.
摘要:
The present invention relates to a lubricating composition for skis comprising a combination of soy wax and a polyhydroxyalkanoate. Said composition has the advantage of being harmless to the environment while having high efficacy in improving sliding. It also relates to the use of said composition and of an aqueous emulsion comprising soy wax as a lubricant for lubricating skis and other winter sliding sports equipment.
摘要:
Compositions and methods for reducing toolwear during iron-machining, including applying a composition comprising water; a lubricant ester; and a sulfur-containing lubricant additive.
摘要:
In order to obtain a cold rolled steel sheet having excellent press formability, a cold rolled steel sheet has, on a surface thereof, an organic-inorganic composite film containing: an organic resin; and a crystalline layered material. The organic-inorganic composite film has an average film thickness of 0.10 to 2.0 µm and contains 0.5 part or more by weight of the crystalline layered material as a solid with respect to 100 parts by weight of a solid of the organic resin. The crystalline layered material preferably is, for example, a layered double hydroxide represented by [M 2+ 1-X M 3+ X (OH) 2 ][A n- ] x/n •zH 2 O, where: M 2+ is one or more of Mg 2+ , Ca 2+ , Fe 2+ , Ni 2+ , and Zn 2+ ; M 3+ is one or more of Al 3+ , Fe 3+ , and Cr 3+ ; and A n- is one or more of OH - , CO 3 2- , Cl - , and (SO 4 ) 2- .
摘要:
A biodegradable lubricating oil composition includes (A) an ester represented by a formula (1) below, the ester having a kinematic viscosity in a range from 300 mm 2 /s to 1000 mm 2 /s at 40 degrees C and an acid value of 0.5 mgKOH/g or less; (B) an ester being obtained by reacting a straight-chain saturated aliphatic carboxylic acid with a polyhydric alcohol, the ester having an acid value of 0.5 mgKOH/g or less; and (C) a phosphate amine salt being obtained by reacting an acidic phosphate with an alkylamine.
In the formula, Ra is a hydrocarbyl group having 4 to 20 carbon atoms, Rb is a hydrocarbyl group having 4 to 18 carbon atoms, Rc is an acyl group having 1 to 10 carbon atoms, and n is an integer of 3 to 15.
摘要:
A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: (I) wherein each R is independently selected from the group consisting of CH 3 , C 2 H 5 and CH 2 OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.
摘要:
Gear oil formulations comprising a gear oil and a film forming agent are disclosed. The film forming agent comprises a polymeric ester which is the reaction product of at least one polyfunctional alcohol, a dimer fatty acid, an optional aliphatic dicarboxylic acid having 5 to 18 carbon atoms and one or more ingredients to reduce the acid value of the polymeric ester to below 5 mgKOH/g with the resultant polymeric ester having a kinematic viscosity at 100° C. ranging from 400 to 5000 mm2/s and a weight average molecular weight ranging from 5000 to 20000. When used as an automotive gear oil formulation the specifications for API GL-4 gear oils are at least satisfied. Use of the gear oil formulation in manual transmissions, transfer cases and differentials and use of the gear oil formulation in an industrial gear suitable for lubricating spur, helical, bevel, worm and hypoid gears are disclosed. Methods of lubrication are also disclosed.