An insulated wire, including: a conductor and an insulating film covering the conductor; in which at least one insulating layer constituting the insulating film contains: a thermosetting resin A, and a resin B that is ranked lower than the thermosetting resin A in a tribo-electric series.

Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.

A rubberless, strippable, semiconducting composition that includes an ethylene-(carboxylic ester) copolymer having a low comonomeric unit content, carbon black, and a strippability additive combination comprising an amide wax and a silicone oil. Also provided are a cured product made from the composition, methods of making and using same, and articles containing same.

The invention relates generally to the field of insulating electrical conductors against partial discharge in the medium- and high-voltage ranges. In particular, the invention relates to an insulating system for an electric machine, in particular a rotating electric machine such as an electric motor and/or a generator. The invention provides for the first time a substitute for the conventionally used mica as a barrier material in an insulating system, such as the main insulation of rotating electric machines such as motors and/or generators. The substitute is based on a polyether-imide/siloxane copolymer, which can be processed two-dimensionally, for example by surface extrusion. In this way, sheets are produced and, after being processed in sheet form or as a laminate, can be used as planar insulating materials, or cut as strips, in insulating systems.

The invention relates generally to the field of insulating electrical conductors against partial discharge in the medium- and high-voltage ranges. In particular, the invention relates to an insulating system for an electric machine, in particular a rotating electric machine such as an electric motor and/or a generator. The invention provides for the first time a substitute for the conventionally used mica as a barrier material in an insulating system, such as the main insulation of rotating electric machines such as motors and/or generators. The substitute is based on a polyether-imide/siloxane copolymer, which can be processed two-dimensionally, for example by surface extrusion. In this way, sheets are produced and, after being processed in sheet form or as a laminate, can be used as planar insulating materials, or cut as strips, in insulating systems.

A coating film is provided in a cable, a medical hollow tube, a molded article and a hollow tube. The coating film is formed from a rubber composition including a rubber component and fine particles. A static friction coefficient on a surface of the coating film is 0.5 or less. When the coating film is subjected to a testing such that a long fiber non-woven fabric including cotton linters including an alcohol for disinfection with a length of 50 mm along a wiping direction is brought contiguous to the surface of the coating film at a shearing stress of 2×10.sup.−3 MPa to 4×10.sup.−3 MPa, followed by wiping off the surface of the coating film at a speed of 80 times/min to 120 times/min and 20,000 repetitions thereof for a wiping direction length of 150 mm, a difference (an absolute value of a difference) between the static friction coefficients of the coating film before and after the testing is not greater than 0.1.

Provided are a self-welding high dielectric silicone rubber composition and a self-welding high dielectric tape. The self-welding high dielectric silicone rubber composition comprises: (A) 100 parts by mass of an organopolysiloxane represented by an average composition formula (1) and having, in a molecule, at least two alkenyl groups bonded to silicon atoms, R.sup.1.sub.nSiO.sub.(4-n)/2 (1), (in the formula, R.sup.1 represents the same or different, unsubstituted or substituted monovalent hydrocarbon group and n is a positive number of 1.95 to 2.04); (B) 10 to 100 parts by mass of hydrophobic fumed silica having a specific surface area obtained by the BET adsorption method of 50 m.sup.2/g or larger; (C) 100 to 300 parts by mass of a conductive complex oxide; (D) 0.1 to 50 parts by mass of a boric acid or a boric acid compound; (E) 1 to 10 parts by mass of a diorganopolysiloxane capped at both molecular terminals with alkoxy groups; and (F) 0.01 to 10 parts by mass of a curing agent comprising an acyl organic peroxide. The self-welding high dielectric silicone rubber composition can be hot-air vulcanized under normal pressure by extrusion molding or roll forming with calender rolls.

Provided are a self-welding high dielectric silicone rubber composition and a self-welding high dielectric tape. The self-welding high dielectric silicone rubber composition comprises: (A) 100 parts by mass of an organopolysiloxane represented by an average composition formula (1) and having, in a molecule, at least two alkenyl groups bonded to silicon atoms, R.sup.1.sub.nSiO.sub.(4-n)/2 (1), (in the formula, R.sup.1 represents the same or different, unsubstituted or substituted monovalent hydrocarbon group and n is a positive number of 1.95 to 2.04); (B) 10 to 100 parts by mass of hydrophobic fumed silica having a specific surface area obtained by the BET adsorption method of 50 m.sup.2/g or larger; (C) 100 to 300 parts by mass of a conductive complex oxide; (D) 0.1 to 50 parts by mass of a boric acid or a boric acid compound; (E) 1 to 10 parts by mass of a diorganopolysiloxane capped at both molecular terminals with alkoxy groups; and (F) 0.01 to 10 parts by mass of a curing agent comprising an acyl organic peroxide. The self-welding high dielectric silicone rubber composition can be hot-air vulcanized under normal pressure by extrusion molding or roll forming with calender rolls.

The present disclosure provides a flooding composition. In an embodiment, the flooding composition includes in weight percent (wt %) based on the weight of the composition (A) from 10 wt % to 45 wt % of a silane-grafted polyolefin (Si-g-PO). The flooding composition also includes (B) from 5 wt % to 60 wt % of a polyα-olefin oil (PAO oil), (C) from 15 wt % to 90 wt % of a polysiloxane, and (D) from 0.05 wt % to 0.2 wt % of a catalyst.

The present disclosure provides a flooding composition. In an embodiment, the flooding composition includes in weight percent (wt %) based on the weight of the composition (A) from 10 wt % to 45 wt % of a silane-grafted polyolefin (Si-g-PO). The flooding composition also includes (B) from 5 wt % to 60 wt % of a polyα-olefin oil (PAO oil), (C) from 15 wt % to 90 wt % of a polysiloxane, and (D) from 0.05 wt % to 0.2 wt % of a catalyst.