5results about How to "Improve electromechanical performance" patented technology

The invention provides a method and a device for improving mechanical and electrical properties of a carbon nano tube through drafting densification and application of the method and the device. The method comprises the following steps: providing an original carbon nanotube aggregate; contacting the original carbon nanotube aggregate with a volatile protonation reagent and carrying out drafting treatment to obtain a drafted aggregate; and directly carrying out heat treatment on the drawn aggregate to evaporate the volatile protonation reagent to obtain the enhanced carbon nanotube aggregate. According to the method, the problem of disordered orientation distribution of carbon tubes in an original carbon nanotube film is solved by utilizing large-proportion drafting, and then the problem that the densified structure of the carbon tubes is damaged due to heat generated by extruding chlorosulfonic acid by utilizing solvent concentration difference by adopting coagulating bath is solved by carrying out direct evaporation densification operation; according to the preparation method, the orientation of the carbon tubes is reserved to a great extent, meanwhile, the carbon tubes form a close packing structure, the electro-mechanical property of the carbon nanotube aggregate is greatly improved, meanwhile, the preparation method is simpler and more convenient, the time needed by preparation is shortened, and no organic solvent is needed.

The utility model provides a kind of insulating bearing cable anchor, comprising: connecting component, with power transmission line hardware connection and bear load;Core body lifting ring, accommodate the glass fiber reinforced silicone rubber wire harness wound to form core body and bear load;Clamp, the inner cavity of the clamp is horn shape, the horn shape inner cavity is consistent with the wire harness of the core body lifting ring wire slot tangent direction introduction, gather has been wound in the core body lifting ring, wire harness, which needs to be shaped, is shrunk into substantially cylindrical through the cylindrical outlet of the clamp;The connecting component is connected with the core body lifting ring, and the clamp is tightly clamped on the core body lifting ring. The utility model has the beneficial effects that: by the inner cavity of the clamp is horn shape, improve the stress state of wire harness, and by additionally provided glue injection hole groove A and glue injection hole B, form complete sealing structure after silicone rubber overall coating forming, improve the reliability of product and overall electromechanical performance.

The invention provides an electromagnetic auxiliary method and system for a vehicle-mounted firearm, and relates to the technical field of vehicle-mounted weapons, and the method comprises the steps: carrying out the quantitative design of an electromagnetic profile cyclic diagram according to an electromagnetic theory; the electromagnetic section cyclic diagram is used for determining the optimal size of each section; making an initial electromagnetic system sample according to the designed electromagnetic profile cycle diagram; configuring a strong excitation power supply and a closed loop in the initial electromagnetic system sample piece to obtain a manufactured electromagnetic system sample piece; and testing and verifying the manufactured electromagnetic system sample piece so as to ensure that the electromechanical performance of the manufactured electromagnetic system sample piece reaches an expected standard. According to the method, the size optimization of each section is ensured through the refined electromagnetic section cyclic diagram design, so that the maximum efficiency and performance of the system are realized. By manufacturing an initial sample piece, configuring a strong excitation power supply and a closed loop and performing strict testing and verification, the mechanical and electrical performance and reliability of a firearm system are remarkably improved.

The invention discloses insulating impregnating varnish. The insulating impregnating varnish comprises a first component and a second component, the first component comprises an epoxy compound, polyesterimide resin and a cross-linking agent, and the second component comprises a curing agent; the polyesterimide resin is prepared from the following raw materials: iminodiacetic acid dialkyl ester, unsaturated dibasic acid, saturated dibasic anhydride, amino-containing aromatic dibasic acid and a monohydric alcohol end-capping reagent, high-content and uniformly-distributed imino groups can be obtained in a main chain of the polyesterimide resin, and more uniform cross-linking sites are provided; compared with the prior art, the insulating impregnating varnish provided by the invention has the advantages that the insulating impregnating varnish is high in varnish hanging amount and has excellent electromechanical properties, heat resistance, degradation resistance, weather resistance and the like, and more chemical bonds can be formed among molecular chains of polyester-imide resin, and the imino group promotes double-bond free radical polymerization and ring-opening polymerization reaction of epoxy groups at the same time.

The invention provides a surface acoustic wave transducer and a surface acoustic wave device. In the surface acoustic wave transducer, the density of at least part of the material of the interdigital electrode in the edge region is higher than the density of the material of the interdigital electrode in the main region, so that the acoustic velocity of the edge region is adjusted to be lower than the acoustic velocity of the main region, a working state of a piston mode can be generated, and effective suppression of a transverse mode is realized; and the performance and reliability of the surface acoustic wave device are improved. In specific application, parameters such as materials and thicknesses of the interdigital electrode and all areas, materials of the bus and the like can be flexibly adjusted according to requirements, so that the transverse suppression is realized, the power tolerance of the device is improved, and the electromechanical performance of the surface acoustic wave device is optimized.