摘要:
An organopolysiloxane composition for viscous fluid couplings permits little torque variation even when used at a high temperature for an extended period of time. The organopolysiloxane composition comprises an organopolysiloxane liquid with a viscosity of 100 to 1,000,000 sq. mm/s and a platinum compound in an amount such that the amount of platinum metal relative to the liquid is 0.1 to 1,000 ppm. The organopolysiloxane liquid is typically a trimethylsiloxy-endblocked polydimethylsiloxane.
摘要:
There is disclosed a water-repellent powder which is prepared by (A) coating the surface of a deliquescent powder with a curable silicone-based formation agent; and (B) curing said formation agent to provide a silicone-based cured film on said powder. Preferably, the deliquescent powder is selected from the group consisting of ammonium acetate, potassium acetate and sodium acetate.
摘要:
There is disclosed a heat resistant organopolysiloxane composition comprising: (A) 100 parts by weight of an organopolysiloxane having a viscosity of 100 to 1,000,000 centistokes at 25.degree. C.; (B) 0.001 to 10 parts by weight of a reaction product of an alkali metal silanolate compound with cerium chloride or a cerium carboxylate; and (C) a diorganopolysiloxane having silicon-bonded hydrogen groups only at its molecular chain terminals, component (C) being present in a quantity sufficient to provide 1 to 10,000 parts per million of silicon-bonded hydrogen based on the total weight of said composition.
摘要:
There is disclosed a heat-resistant agent which exhibits good solubility in various organopolysiloxanes and which confers superior heat-resistance thereto, said heat-resistant agent having the formula ##STR1## wherein R.sup.2 is independently selected from hydrocarbon or halogenated hydrocarbon groups having 1 to 10 carbon atoms, R.sup.1 is independently selected from R.sup.2 or a eugenol residue, m is an integer having an average value of 5 to 500 and n is an integer having an average value of 0 to 500, with the proviso that there is at least one eugenol residue in the molecule. Also disclosed is a composition comprising an organopolysiloxane and the above described heat-resistant agent.
摘要:
To provide a perpendicular magnetic recording head which can prevent unintentional recording and erasing from occurring on recording media.In a perpendicular magnetic recording head comprising a pair of side shield layers made of a soft magnetic material on both sides in a track width direction of a magnetic pole part of a main magnetic pole layer, the pair of side shield layers have a front end face exposed at a medium-opposing surface and a side end face extending from one end part of the front end face remote from the magnetic pole part in the track width direction to the deeper side in a height direction, while the front end face and the side end face form an angle of 90° or greater therebetween.
摘要:
There is provided a perpendicular magnetic recording head device which can increase magnetic field gradient to exhibit excellent recording performance while maintaining magnetic field intensity capable of performing information recording well. In a perpendicular magnetic recording head device composed of a main magnetic pole layer and a return path layer which are laminated with a nonmagnetic insulating layer therebetween, the return path layer has a two-layer structure composed of a low saturation magnetic flux density layer (low Bs layer), and a high saturation magnetic flux density layer (high Bs layer) formed an the low Bs layer and made of a material that has a relatively high saturation magnetic flux density. In a front end surface of the return path layer, the low Bs layer and the high Bs layer are exposed.
摘要:
A main magnetic pore layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed under the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily introduce a recording magnetic field to a fore end of the main magnetic pole layer.
摘要:
The present invention relates to an active energy ray-curable organopolysiloxane resin composition that comprises an organopolysiloxane resin having an epoxy group and an aromatic hydrocarbon group and a photopolymerization initiator, as well as to a light-transmitting component that comprises cured bodies produced by irradiating the aforementioned organopolysiloxane resin with active-energy rays in the presence of the aforementioned photopolymerization initiator, and to a method for manufacturing the aforementioned light-transmitting component.
摘要:
An electric rotating machine has a rotor having N and S poles and includes a stator with an annular stator core and slots. Multiple-phase stator windings are embedded in the slots, and are formed by winding continuous wires such that straight parts of the stator windings pressed in a flat shape are wound in rings around a grooved cylindrical member. The cylindrical member is inserted into a bore defined by the annular stator core so that the grooves of the cylindrical member are arranged opposite to the slots. The sets of the windings are folded back alternately outside the slots of the stator core and are wound so the sets of the windings are embedded alternately in the direction of the depth of the slots. Leading and trailing ends of the continuous wires are superposed after being wound at least one turn around the circumferentially arranged slots of the stator.
摘要:
An electric rotating machine has a rotor having N and S poles and includes a stator with an annular stator core and slots. Multiple-phase stator windings are embedded in the slots, and are formed by winding continuous wires such that straight parts of the stator windings pressed in a flat shape are wound in rings around a grooved cylindrical member. The cylindrical member is inserted into a bore defined by the annular stator core so that the grooves of the cylindrical member are arranged opposite to the slots. The sets of the windings are folded back alternately outside the slots of the stator core and are wound so the sets of the windings are embedded alternately in the direction of the depth of the slots. Leading and trailing ends of the continuous wires are superposed after being wound at least one turn around the circumferentially arranged slots of the stator.