135results about How to "High voltage resistance" patented technology

The invention discloses a sealed switching connector, which is characterized in that ceramic tubes are sleeved on the excircles on contact elements of the contactor, and at least one end of the excircles is positioned at the end openings of contact pin channels; glass sealing members are integrally sintered between the inner walls of the channels at the inner end openings of the ceramic tubes in the contact pin channels and the contact elements, between the outer walls of the ceramic tubes and the inner walls of the contact pin channels as well as between the inner walls of the ceramic tubes and the contact elements; and the ceramic tubes, a metal shell and sealing-in pins are solidified into a whole by the integrally sintered glass sealing members. The invention greatly improves the high pressure sealing property of the connector by or above 140MPa, so that the connector can completely bear the hydraulic pressure of the special high-pressure vessels and ensure overall sealing of the high-pressure fluid vessels not to be affected while finishing signal transmission.

The invention provides a copper-clad plate with an aluminum substrate and media filled with ceramics and a method for manufacturing the copper-clad plate. The copper-clad plate with the aluminum substrate and the media filled with the ceramics comprises an aluminum-base bottom plate, an insulating layer and a conducting circuit layer. The insulating layer is stacked between the aluminum-base bottom plate and the conducting circuit layer and comprises epoxy resin and alpha-Al<2>O<3> ceramic powder, the alpha-Al<2>O<3> ceramic powder is dispersed in the epoxy resin, and the mass percent of the alpha-Al<2>O<3> ceramic powder in the insulating layer ranges from 3% to 9%. The copper-clad plate and the method have the advantages that the insulating layer of the copper-clad plate with the aluminum substrate and the media filled with the ceramics comprises the alpha-Al<2>O<3> ceramic powder and the epoxy resin, alpha-Al<2>O<3> is high heat conductivity and voltage withstand property and is added into the insulating layer, and accordingly the problem of degradation of voltage withstand property due to ceramic powder filling can be effectively solved.

The invention relates to a preparation method for a DTX carbon fiber protect lead tubular product. The product uses HDPE high density polyene and modification carbon elements as raw materials. The mould extrusion forming and the unique rotational forming technique are used for setting and producing the protect lead tube which takes on helix tube shape. As the invention uses the rotational technique, the cast has thin walls, saves materials and has light weight, and is convenient for transportation and construction. The helix shape is used in the method, which increases ring stiffness and has strong rigidity. Tough elasticity, namely, deflexion, effectively undertakes loading and is not out of shape. The ring extrusion technique is used in the method, which causes that the tubular product has excellent bending property, can bend at will, can avoid barriers, and is suitable for different topography and landform, constructed in an optimizing and reelability way. In addition, as the tubular product has longer length, has few adapters, thus saving a large number of labor power, physical resources, and financial resources. The tubular product has strong quake-proof capability, corrosion-resistance, high pressure-proof performance, good flame retarding effect and is convenient for installation and construction.

Provided is a spark plug with a center electrode that has the diameter thereof made thinner, wherein stain-resistant and heat-resistant characteristics are improved. The spark plug (1) is provided with a center electrode (5), an insulator (2), and a main metal-part (3), and the insulator (2) is provided with a long-leg section (13), a tapered section (14), and a mid-body section (12). The maximumouter-diameter of a portion of the center electrode (5) to be arranged within the long-leg section (13) is to be 3.0 mm or shorter. A step section (21) and a front-tip-side inner circumference section (51) are formed on the inner circumference of the main metal part (3), and the tapered section (14) is latched together to the step section (21). An inequality 0.12<= A / B<= 0.24 is satisfied, when the volume of a portion of the insulator (2) existing along the axis (CL1) direction, from the tip of the insulator (2) to a place 2 mm from the rear-end side, is assumed to be A (mm3), and the volume of a portion of the tapered section (14) located at the front tip side of the rear end of the portion to be latched together with the step section (21), and which portion has the difference in the diameters of the front-tip side inner circumference section (51) and the outer circumference part of itself to be 1.5 mm or less, is assumed to be B (mm3).

The invention discloses a voltage-resistant electrolyte-resistant termination adhesive tape and a copolymer used for the termination adhesive tape. The structure of the copolymer is poly(octadecylacrylate / random 2-ethylhexyl acrylate / random 4-hydroxybutyl acrylate / random 4-((adamantan-1-ylcarbamoyl)oxy)butyl acrylate / random-N,N-dimethylacrylamide). According to the invention, 4-((adamantan-1-ylcarbamoyl)oxy)butyl acrylate is introduced into a side chain of a polyacrylate colloid, so the polarity of a polyacrylate molecular chain is effectively reduced, a free volume is increased, charge movement among molecules is reduced, and voltage resistance is improved; the copolymer is cross-linked with a hydroxyl-containing elastomer and a polyfunctional isocyanate curing agent to form an interpenetrating-polymer-network three-dimensional cross-linked structure, so an obtained adhesive maintains the same good adhesive force as a polyacrylate system and also shows excellent voltage resistance and electrolyte resistance; and the termination adhesive tape prepared from the adhesive can be suitable for high-energy-density lithium ion batteries.

The invention relates to the technical field of LED aluminum substrates, in particular to an aluminum substrate binding agent and an aluminum substrate with the same. The aluminum substrate binding agent comprises, by weight, 40-80 parts of polyurethane modified epoxy resin, 30-50 parts of tung oil modified phenolic resin, 10-20 parts of high-functionality polyurethane modified acrylate, 100-200 parts of inorganic powder, 20-40 parts of nitrile rubber, 5-15 parts of organosilicon compounds, 1-2 parts of imidazole and 1-5 parts of curing agents. The aluminum substrate binding agent and the aluminum substrate have the advantages that the aluminum substrate prepared from the aluminum substrate binding agent is high in Tg and voltage resistance and excellent in heat conductivity and has a lowdielectric constant; the aluminum substrate is good in flexibility and excellent in machining property and can resist bending, insulation layers are free of cracking after the aluminum substrate is bent, base materials are free of leaking after the aluminum substrate is bent, and hole edges are free of breaking after holes are drilled in plates.

The invention discloses a high-voltage-resistant structure of a mutual induction coil printed circuit board. A wet film type solder-resistant ink layer with the thickness of 0.035mm-0.01mm covers the surface of a circuit on the outmost layer of the mutual induction coil printed circuit board; a copper-free baseplate with the thickness of 0.05mm-0.15mm is fixedly attached onto the surface of the wet film type solder-resistant ink layer; the wet film type solder-resistant ink layer and the copper-free baseplate are respectively provided with a windowing part and a grooving part corresponding to plug-in holes of the circuit on the outmost layer, and the plug-in holes are exposed out of the windowing parts and the grooving parts. Due to the adoption of the structure, the voltage resistance of the mutual induction coil printed circuit board is enhanced, and the requirement of a high-voltage insulation test under the conditions of DC1500V, 60sec and 2mA can be met.