74results about How to "To achieve the insulation effect" patented technology

The invention discloses an intensive connector, which comprises a bolt, two pressing plates, a plurality of connecting pieces and a plurality of insulating partition plates, wherein the connecting pieces and the insulating partition plates are all provided with sleeve holes and are sleeved on the bolt through the sleeve holes; the connecting pieces are positioned between two adjacent insulating partition plates; the connecting pieces and the insulating partition plates are tightly pressed by the two pressing plates; each insulating partition plate comprises a plate body and a shaft sleeve body; the shaft sleeve body is sleeved on the bolt through the sleeve hole; the shaft sleeve bodies of two adjacent insulating partition plates are butted; and the connecting pieces are sleeved on the shaft sleeve bodies. The intensive connector has the advantages of fewer parts and capabilities of reducing the production and manufacturing cost and reducing the error rate of product production.

This invention refers to the thermoplastic copolyester, whose viscosity can be increased to between 0.85L / g and 1.05L / g after polymerization, and can be used in producing heat shrinking sleeve. The invention also refers to a way of making heat shrinking sleeve: the heat shrinking copolyester is changed into tubular shape after being melted and is made into copolyester heat shrinking sleeve after being huffed and stretched. And the lengthways shrinkage of the heat shrinking sleeve (MD) is no more than 15%, the transverse shrinkage (TD) is no less than 14%. This kind of heat shrinking sleeve can be used as the coats and insulating coats of all kind of conductors.

The invention relates to an electric insulation high-temperature resistant hybrid ball bearing and a preparation method thereof, and belongs to the technical field of rolling bearings. According to the electric insulation high-temperature resistant hybrid ball bearing, silicon nitride ceramic balls are used as rolling bodies between the inner ring and the outer ring of the bearing, and a polyether-ether-ketone retainer is adopted at the same time, so that the insulation effect is achieved, the electric corrosion is thoroughly avoided, and the service life of the bearing is prolonged. The thermal expansion coefficient of the silicon nitride ceramic balls is small, and the silicon nitride ceramic balls are prevented from expanding caused by the temperature in the high-temperature environment; by adopting the polyether-ether-ketone retainer, the normal working reliability of the bearing in the high-temperature state is guaranteed; the use temperature of the whole bearing is improved by combining the small thermal expansion coefficient of the silicon nitride ceramic balls and the adoption of the polyether-ether-ketone holder, and the bearing can resist the temperature of 200 DEG C or above; a solid lubricating material layer is sprayed between the retainer and the silicon nitride ceramic balls so as to avoid the premature damage of a common bearing caused by grease drying; According to the preparation method of the electric insulation high-temperature resistant hybrid ball bearing, the raw materials are easy to obtain, and the preparation method is stable and reliable, and suitable for large-scale production.