30results about How to "Improve energy characteristics" patented technology

Provided are an energy storage device including an electrode in which lithium is introduced into a silicon layer and a method for manufacturing the energy storage device. A silicon layer is formed over a current collector, a solution including lithium is applied on the silicon layer, and heat treatment is performed thereon; thus, at least lithium can be introduced into the silicon layer. By using the solution including lithium, even when the silicon layer includes a plurality of silicon microparticles, the solution including lithium can enter a space between the microparticles and lithium can be introduced into the silicon microparticles which are in contact with the solution including lithium. Moreover, even when the silicon layer is a thin silicon film or includes a plurality of whiskers or whisker groups, the solution can be uniformly applied; accordingly, lithium can be included in silicon easily.

The invention relates to a pouring-type high-energy insensitive explosive and a preparation method thereof. In order to solve the problem of a low energy level of traditional butylated hydroxy castingPBX explosives, an energy-containing adhesive and an energy-containing plasticizer are introduced as a binder system, and through addition of high-energy explosives and metal fuel components, the prepared pouring-type PBX explosive has high energy characteristics; the explosive formula has a density greater than 1.85 g/cm<3>, the detonation velocity is greater than 7800 m/s, and the explosive power is that of 1.9 times or above the TNT equivalent; and at the same time, the explosive formula has good low-vulnerability, and especially has mild reactions in slow-speed burning tests, and the reaction level does not exceed a detonation level.

The present invention relates to a metal hydride polymer in-situ polymerization coating modification method, dicyclopentadiene (DCPD) and the like are used as polymer reactive monomers for formation of a poly dicyclopentadiene(DCPD) homopolymer or copolymer coating layer on metal hydride surface by in-situ polymerization, and metal hydride isolation protection can be achieved. The method has the characteristics of rapid response and coating layer stability, good role in isolation and protection can be played, a modified metal hydride can maintain excellent energy characteristics, and a good and stable performance product is provided for metal hydride application of in many fields.

The invention discloses a phase change type paraffin-containing fuel ramjet engine, which adopts an integrated design of a combustion chamber and a gasification chamber, and is compact in structure and high in energy utilization rate. A shell is heated by a large amount of heat released by combustion reaction in the combustion chamber, the surface of paraffin-containing fuel can be preheated under the action of radiation and heat convection, and meanwhile, ram air is heated, so that the surface of the fuel has higher temperature, and phase change of the fuel is facilitated. Mode conversion is easy to achieve, and automatic switching between a boosting section and a ramming section can be completed through change of pressure intensity. The head of the combustion chamber is provided with a conical hole with a certain inclination, so that the rotational flow of gas can be realized, and higher combustion efficiency can be further obtained. When the boosting section and the ramming section are switched, a mixture of a phase change product and air generates rotational flow under the action of the conical hole when flowing into the combustion chamber, so that the mixing effect is good. The engine is adjustable in size, wide in application range, and suitable for power systems of supersonic aircrafts.

The invention relates to a three-element solid-liquid propellant rock protection system for vehicles and provides a three-element solid-liquid propellant rocket protection system for vehicles, having a protection function. The system comprises an injector 1, a combustion chamber 2, a control system 3, a supply system 4, an injection pipe 5, a storage tank 6 and a parachute 7. The system is characterized in that the combustion chamber 2 is connected with the storage tank 6 through the injector 1, the combustion chamber 2 is filled with solid fuel, the control system 3 is connected with a vehicle cab control system and is connected with the supply system through a wire, and the storage tank 6 contains liquid antioxidant and liquid hydrogen. The system having the protection function has the advantages that front end and rear end collisions of vehicles can be avoided.

The present invention discloses slight smoke type tricolor fireworks powder particles and application. The fireworks powder particles are obtained by the following steps: dissolving nitrocotton and a smokeless powder with the nitrocotton at first; emulsifying, foaming and prilling; then removing a solvent and separating materials; and finally drying to obtaining the fireworks powder particles. The obtained particles are mixed according to the relative mass ratio of (1-8): (1-8): (1-8) to obtain colorful fireworks powder. According to the slight smoke type tricolor fireworks powder particles and the application provided by the present invention, a color addition principle is utilized; the slight smoke type tricolor fireworks powder particles are mixed to match colors; the circumstance that a formula is designed independently according to various colors can be avoided; and only three basic powder particles are required to be produced. The three raw material powders are combined to achieve the colorful effect, the preparation process can be simplified, the product quality is stabilized, the production efficiency is greatly improved, and the production links are simplified.

The invention discloses a thermal self-repairing PNIMMO-based thermoplastic elastomer and a preparation method thereof, aiming at solving the problem that a traditional polyurethane elastomer is difficult to repair after being damaged. The molecular structural formula of the thermal self-repairing PNIMMO-based thermoplastic elastomer is shown in the specification, in the formula, n is an integer ranging from 7 to 60, and x is an integer ranging from 5 to 100. The preparation method comprises the following steps: firstly, with PNIMMO and furoyl chloride as raw materials, preparing furyl-terminated modified PNIMMO through an elimination reaction; and then preparing the thermal self-repairing PNIMMO-based thermoplastic elastomer through Diels-Alder reaction by taking furyl-terminated modifiedPNIMMO as a prepolymer and 4,4'-bismaleimide diphenylmethane as a chain extender. The thermal self-repairing PNIMMO-based thermoplastic elastomer disclosed by the invention is simple and feasible insynthetic route, has a self-repairing function and has a wide application value in the field of polymer bonded (PBX) explosives.

The invention discloses an impeller of a hydraulic turbine and a forward design method thereof, and the method comprises the following steps: (1) dividing an impeller blade into a front end and a rear end in the extension direction from an inlet to an outlet of the impeller; the angle formed when the front end is placed is an inlet placing angle, namely an inlet torsion angle; the angle formed when the rear end is placed is an outlet placing angle, namely an outlet torsion angle; (2) calculating an inlet torsion angle and an outlet torsion angle of an impeller matched with the outflow of the volute according to the shape of the volute and the flowing law of the outflow by taking the performance of the hydraulic turbine as an optimization target; (3) according to the working condition of the hydraulic turbine, the inlet torsion angle and the outlet torsion angle are inspected and corrected; and (4) determining a torsion angle change rule in the streamline direction of the impeller blade and the overflowing interface direction of the vertical streamline according to a positive and negative problem iteration principle. By optimizing the inlet torsion angle of the impeller blade, the turbine energy characteristic is improved, and the existing pressure energy utilization rate is increased.

The invention discloses perdeuterated ammonium dinitramide and a preparation method thereof, belonging to the technical field of synthesis of deuterated energetic materials. According to the invention, purification is simple, and a high-purity product can be obtained without adsorption and solvent elution; the product does not contain metal ions such as potassium ions, does not cause catalyst poisoning in the use process, and is widened in application range; reaction process is judged by measuring the pH value of a solution, and the reaction endpoint judgment method is simple; and deuterated ammonia gas can be recycled after being collected, so the waste of deuteration raw materials is reduced, and production cost is reduced. Compared with common ammonium dinitramide, the initial decomposition temperature of the perdeuterated ammonium dinitramide is increased to about 150 DEG C, and the thermal stability of the perdeuterated ammonium dinitramide is obviously improved; and crystalline density is increased, and meanwhile, energy characteristic is obviously improved. According to the preparation method disclosed by the invention, the preparation of the perdeuterated ammonium dinitramide can be realized, and a reference is provided for industrially producing the perdeuterated ammonium dinitramide.

A film target for laser-induced particle acceleration includes a first target layer on which a laser is incident; an intermediate layer located behind the first target layer along a propagating direction of the laser, and in which an intended ion beam is generated; and a second target layer located opposite to the first target layer with the intermediate layer interposed therebetween.

A radiation detector obtains radiation information by detecting a light pulse occurred in response to a radiation in a scintillation fiber at one end or opposite ends of the scintillation fiber. The scintillation fiber is surrounded by a scattering member which emits an electron by interaction with the radiation.