摘要:
A sliding material comprising a backing metal having a porous metal layer formed on the surface thereof and a composition for impregnation coating impregnated and coated to the pores and the surface thereof, wherein the composition for impregnation coating is a composition composed of (a) 0.5-30 vol. % of at least one material selected from a group of resins composed of PFA, EPE, and FEP, 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm.sup.2 /g in an average particle size, and the balance composed of PTFE, a total of the respective components other than the PTFE is 5.5-50 vol %, a sliding material comprising a backing metal having porous metal layer formed on the surface thereof and a composition for impregnation coating impregnated and coated to the pores and the surface thereof composed of 0.5-30 vol % of at least one material selected from resins composed of PFA, EPE, and FEP, 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm.sup.2 /g in an average particle size, 0.5-30 vol % of at least one material selected from a filler composed of solid lubricant metal oxide, metal fluoride, graphite, a fiber selected from a ceramic of carbon fiber, glass fiber, and SiC, and the balance composed of PTFE, the respective components other than the PTFE being 6-50 vol %, and a method of manufacturing a sliding material comprising the steps of impregnating and covering the above composition for impregnation coating (a) or (b) to the pores and the surface thereof defined in the porous metal layer formed on the surface of a backing metal, and thereafter baking the backing metal with the above composition for impregnation coating (a) or (b) in a neutral atmosphere or in a reducing atmosphere.
摘要:
A bonded ceramic-metal composite substrate comprising a ceramic substrate having opposite surfaces and a copper sheet having a face directly bonded to one of the surfaces of the ceramic substrate, wherein the median surface roughness (R.sub.a) of the outer surface of the copper sheet is not greater than 3 .mu.m, and the maximum surface roughness (R.sub.max) of the outer surface of the copper sheet is not greater than 18 .mu.m. The invention improves the manufacturing reliability of various electronic devices such as semiconductor modules.
摘要:
A method for detecting a harness skip in a dobby in which operations of a heald frame during one cycle of a pattern in a weaving machine are detected and stored, then subsequently detected signals on the heald frame are compared with the stored signals.
摘要:
A positive dobby in which a pair of cam plates for moving each heald frame positively vertically are provided separately on the first cam shaft and on the second cam shaft parallel to the first cam shaft, whereby the dobby is constituted without enlarging the pitch between the cam plates corresponding to each heald frame.
摘要:
A radiation curable coating composition suitable for providing a cured coating of enhanced processability on metal substrates, comprising 100 parts of an acrylic copolymer having a number average molecular weight of 15,000 to 800,000 and predominantly comprised of polymerized units of at least one acrylic ester; 5 to 150 parts of at least one polyfunctional compound having a molecular weight of not greater than 2,000 and two or more radical-polymerizable double bonds in the molecule; and 0.2 to 15 parts of at least one non-polymerizable and nonvolatile organic compound having a molecular weight of not greater than 3,000.
摘要:
Disclosed is a compound represented by the general formula: wherein R1 represents an aryl or heterocyclic group which may be substituted or the like; X1 represents a C2-C4 alkylene group or the like; X2, X3 and X5 independently represent NH, a bond or the like; X4 represents a lower alkylene group, a bond or the like; Y1 represents a bivalent alicyclic hydrocarbon residue which may be substituted or a bivalent alicyclic amine residue which may be substituted; and Z1, Z2, Z3, Z4, Z5 and Z6 independently represent a nitrogen atom, a group represented by the formula: CH, or the like, provided that at least one of Z3, Z4, Z5 and Z6 represents a nitrogen atom, or a salt thereof, which is useful as an antibacterial agent.
摘要:
A nitrogen-containing heterocyclic compound represented by the general formula: wherein the dashed line represents a single bond or a double bond; R1, R2, R3, R4 and R5 independently represent a hydrogen atom, halogen atom, a lower alkyl, aryl, lower alkoxy or monocyclic heterocyclic group which may be substituted or the like; R6 represents a lower alkyl, aryl, monocyclic heterocyclic, bicyclic heterocyclic or tricyclic heterocyclic group which may be substituted; X1 represents a lower alkylene group or the like; X2 represents a lower alkylene, lower alkenylene or lower alkynylene group which may be substituted; X3 represents an oxygen atom, sulfur atom, a sulfinyl group, sulfonyl group or the like; Y1 represents a bivalent cyclic group, containing a nitrogen, which may be substituted or the like; and Z1 represents a nitrogen atom, a carbon atom which may be substituted or the like, or a salt thereof. The compound or salt has a potent antibacterial activity and a high safety, and is therefore useful as an excellent antibacterial agent.
摘要:
A multilayer inductor includes first and second conductive coil patterns which are disposed in two layers in an upper portion of a multi-layered body and are electrically connected consecutively in series to third and fourth conductive coil patterns disposed in a lower portion of the multi-layered body through via-holes formed in an insulation sheet, thereby forming a spiral coil. The first conductive coil patterns and the second conductive coil patterns overlap each other at edges thereof. The fourth conductive coil patterns and the third conductive coil patterns overlap each other at edges thereof.
摘要:
A plastic molded product of olefin (co)polymer composition comprises 0.01-5.0 weight parts high molecular weight polyethylene with an intrinsic viscosity &eegr;E in the range of 15-100 dl/g measured in 135° C. tetralin and preferably 100 weight parts polypropylene. The high molecular weight polyethylene has an average particle size in the range of 1-5000 nm and is finely dispersed as fine granules in the polypropylene, so that high melt strength and high crystallization temperature are attained, enabling various molding methods to be performed with high speed productivity. Using the polymer composition, plastics such as a resin foam, a film, a sheet, a layered plastic article with a coated substrate surface, a hollow plastic article, an injection molded plastic article, a fiber, a nonwoven web or a continuous tube-shaped plastic are provided. The olefin (co)polymer composition is obtained by preparing high molecular weight polyethylene granules using e.g. a titanium transition metal compound catalyst, and adding these, e.g. as a polymerization catalyst of propylene, singly or together with a polyolefin preparing catalyst.
摘要:
A rotary slide bearing part of a rotary slide slit bearing for supporting a rotary shaft thereon in a rotatable manner, has a first bearing surface portion adapted to be arranged adjacent to a second bearing surface portion of another rotary slide bearing part of the rotary slide slit bearing, a load from the shaft to be borne by the first bearing surface portion is larger than a load from the shaft to be borne by the second bearing surface portion, the first bearing surface portion includes a fluidal pressure generating surface facing close to the shaft to generate a fluidal pressure between the fluidal pressure generating surface and the shaft, a main groove arranged at an circumferential end of the first bearing surface portion adjacent to the second bearing surface portion, and a sub-groove extending from the main groove in a circumferential direction of the first bearing surface portion, and an axial width of the sub-groove is smaller than that of the main groove.