75results about How to "Meet the needs of different fields" patented technology

The invention discloses a plant fiber environment-friendly material and a preparation method thereof as well as application of the material in tableware, toys, furniture, decoration or wall. The preparation method comprises the following steps of: pretreating, grinding and screening the plant fiber; mixing the screened plant fiber powder with an adhesive and a modification aid, and stirring at high temperature, wherein the adhesive mainly adopts hydroxypropyl methyl cellulose; filtering with a riddler, and dehydrating and preheating the screened organic synthesis plant fiber raw material; and performing high-temperature die pressing. According to the plant fiber environment-friendly material as well as the preparation method and application thereof, the product has good performance and additional functionality, can be applied to wider fields, conforms to relatively high requirements on using safety, and facilitates environmental protection so as to overcome the shortcomings of the existing plant fiber environment-friendly material and a preparation method and application thereof.

The invention discloses a high-power ultrashort-pulse optical frequency comb generation method based on a self-similar amplifier. The high-power ultrashort-pulse optical frequency comb generation method is based on self-similar amplification technology and effectively overcomes gain narrowing, bandwidth limitation and nonlinear phase distortion in pulse amplification. A light spectrum is effectively expanded, and the bandwidth of an output pulse is reduced. Furthermore the power of a mode-locked pulse is effectively expanded, thereby acquiring a high-power femtosecond pulse and improving carrier envelope phase zero-frequency locking precision. Furthermore carrier envelope phase zero-frequency locking technology based on an acoustic-optical crystal frequency shifter is utilized, thereby realizing large reaction bandwidth and high control precision, and realizing a high-frequency high-power ultrashort-pulse optical frequency comb through real-time control. The high-power ultrashort-pulse optical frequency comb generation method is advantageous in that the high-power ultrashort-pulse optical frequency comb generation method can be directly expanded and applied on femtosecond optical frequency comb control technology for obtaining the stable high-frequency high-power ultrashort-pulse optical frequency comb.

The invention relates to a method for 3D printing of a bicomponent composite material with a skin-core structure. Skin layer polymers and core layer polymers are conveyed to an outer layer and a middle layer of the same nozzle of a 3D printer by different runners for extrusion to prepare the bicomponent composite material with the skin-core structure; the skin layer polymers and the core layer polymers are materials for forming a skin layer and a core layer of the bicomponent composite material with the skin-core structure; the 3D printer mainly consists of a bin I, a bin II, a screw extruderI, a screw extruder II, a metering pump I, a metering pump II, a distribution plate, a nozzle and multiple melt pipes; and the skin layer polymers and the core layer polymers are fed in the screw extruder I and the screw extruder II by the bin I and the bin II for melting, then, are conveyed into the metering pump I and the metering pump II by the melt pipes, are metered into the same distributionplate by the metering pumps, and are distributed into the nozzle by the distribution plate. Products printed by the method can integrate the characteristics of different materials to meet the demandsin different fields.

The invention belongs to the technical field of evaporators of loop heat pipes, particularly relates to a machining method of a capillary wick and further discloses an assembly method of the capillarywick and a pipe casing. According to the machining method of the capillary wick, a binding agent is added to an existing metal powder material, a green body is prepared after isostatic compaction, channels are machined in the green body, and the capillary wick is prepared after sintering. According to the assembly method of the capillary wick and the pipe casing, the inner wall of the pipe casingis coated with paste containing the binding agent, so that an adhesive coating is formed; the capillary wick is inserted into the pipe casing, left to stay still until the capillary wick is dried andsintered at a high temperature, then the pipe casing and the capillary wick are closely adhered together, and the problem of high requirements for the accuracy of the overall size of the capillary wick in assembly manners in the prior art is solved; and additionally, the whole process has the advantages of simple machining manner, relatively short machining time and relatively low machining costs.

The invention discloses a method for preparing granularity controllable narrow range polymer micro-nano spheres. The granularity controllable narrow range polymer micro-nano spheres can be efficiently and continuously produced at normal temperature by using industrial grade polydisperse polymer products, recovered polymer materials, homopolymers and copolymers which are wide in source as raw materials by virtue of a two-step production process of mechanical stirring-micro jet flow. In a preparation process, the proportion of a dispersed phase to a continuous phase, the type and use level of surfactants and compounding schemes of types of organic solvents and high pressure chamber of the device are adjusted without high-temperature time-consuming polymerization reaction and cockamamie post-treatment as well as purification of raw materials, so that the grain size and grain size distribution of the micro-nano spheres can be controlled. The diameters are adjustable from 30nm to 3mu m, the polydispersity index is less than 0.2, and the micro-nano spheres are smooth and non-adhesive on the surfaces and can be re-dispersed in a solvent. The obtained polymer micro-nano spheres have a wide application range in the fields of standard metering, food industry, medicines, bioengineering, coating and plastic processing and the like.

The invention provides a piezoelectric thermoelectric dynamic isotope cell. The cell comprises a gas pipeline, a heat source cavity covering case, a fuel box, a radioactive source, a gas state workingmedium, a thermoelectric energy conversion assembly and a single-cavity compressor. The opposite two ends of the heat source cavity cover communicate with the two ends of the gas pipeline so that a closed circulation pipeline is formed. A unidirectional gas charging valve is arranged on the heat source cavity covering case. The fuel box is fixedly arranged in the heat source cavity covering case.The radioactive source is arranged in the fuel box. The gas state working medium fills the circulation pipeline. The piezoelectric energy conversion assembly is arranged on the inner surface of the gas pipeline. The piezoelectric energy conversion assembly is arranged on the outer surface of the gas pipeline and separated from the piezoelectric energy conversion assembly. The single-cavity compressor is arranged on the gas pipeline and used for driving the gas state working medium to flow in a circulation manner. Thus, the cell is highly stable, high in energy conversion efficiency, high in working stability, and quite long in service lifetime and the output power is adjustable.

The invention discloses a flexible substrate CdTe thin-film solar cell and a preparing method thereof. The flexible substrate CdTe thin-film solar cell is composed of the following seven parts including a transparent flexible substrate thin-film material layer, a transparent conducting thin film layer, a negative electrode, a CdS thin-film window layer, a CdTe thin-film absorbing layer, a back electrode metal contact layer and a flexible thin-film material packaging layer, wherein the transparent conducting thin film layer is formed in the manner that ZnxCd1-xO deposits on the flexible substrate thin-film material layer, the negative electrode is formed on the transparent conducting thin film layer, the CdS thin-film window layer is arranged on the transparent conducting thin film layer, the CdTe thin-film absorbing layer is arranged on the CdS thin-film window layer, the back electrode metal contact layer is arranged on the CdTe thin-film absorbing layer, and the flexible thin-film material packaging layer is arranged on the back electrode metal contact layer. The flexible substrate CdTe thin-film solar cell has the advantages of being low in cost, high in efficiency and capable of meeting requirements of different fields, and the preparing method can be applied to mass preparing of low-temperature technology flexible substrate CdTe thin-film solar cells.

The invention relates to a porous metal foil as well as a preparation method and an application thereof. The method comprises the following steps of introducing a metal foil into an electroplating solution, and electrifying to form an electroplating layer on the surface of the metal foil; placing the metal foil loaded with the electroplating layer in a vacuum furnace, and sequentially carrying outtwo-stage heating treatment on the metal foil loaded with the electroplating layer under the condition of vacuum to obtain the porous metal foil. The pore size structure of the prepared porous metalfoil is controllable. The preparation method is simple, feasible, low in cost and small in pollution. The pore size distribution of the porous metal foil can be adjusted conveniently. The obtained metal foil has a thickness of 5 to 200 [mu]m and an average pore size of 100 nm to 10 [mu]m.

The present invention provides a dynamic isotope cell based on liquid metal. The dynamic isotope cell comprises: a metallic conduit; a heat source cavity cladding, wherein two opposite ends of the heat source cavity cladding respectively communicate with two ends of the metallic conduit to form a closed circulation line, and the heat source cavity cladding is provided with a one-way inflation valve; a fuel box fixedly arranged at the internal portion of the heat source cavity cladding; a radioactive source arranged in the fuel box; liquid metal stored in the circulation line; a piezoelectric transduction module arranged at the inner surface of the metallic conduit; a heat radiation structure arranged at the outer surface of the metallic conduit and arranged at intervals with the piezoelectric transduction module; and an electromagnetic pump arranged on the metallic conduit and configured to drive the circulation flow of the liquid metal. The dynamic isotope cell is good in reliability,high in energy conversion efficiency, good in work stability, adjustable in output power and long in service life.

The invention discloses a broadband optical frequency comb and an implement method thereof. The broadband optical frequency comb is characterized by comprising a continuous laser source, a pulse generation module and an amplification control module, wherein the continuous laser source is connected to the input end of the pulse generation module, and the output end of the pulse generation module is connected to the input end of the pulse generation module by the amplification control module to form a closed loop cavity. The broadband optical frequency comb has the advantages that, laser is continuously injected based on single-longitudinal-mode narrow-linewidth, an F-P cavity-cavity enhanced structure is adopted, the pulse is repeatedly modulated, the spectrum can be effectively broadened, and thereby the broadband optical frequency comb can be directly expansively applied to the control technology of femtosecond optical frequency combs to obtain the stable broadband femtosecond optical frequency comb.

The invention relates to a porous platinum preparation method and application of porous platinum. The preparation method provided by the invention comprises the following steps that metal platinum andmetal low in melting and boiling point are put into a vacuum furnace, a vacuum condition is kept, after heating at the low temperature is conducted for a period of time, the temperature is increased,vacuum is kept, and then the porous platinum can be obtained. According to the method, platinum alloy smelting and porous platinum preparing are integrated, no pilot process is needed, the operationcan be completed on the same equipment, thus, the cost can be reduced, in addition, metal oxidization can be avoided, and the platinum purity is improved; the porosity of the porous platinum can be changed by adjusting and controlling the temperature and time, the prepared porous platinum is uniform in pore diameter distribution, controllable in size and high in porosity, and accordingly, requirements in different fields are met; and elements which are low in melting and boiling point and are obtained through high temperature evaporation can be recycled, accordingly, wasting and polluting areavoided, and the material utilization rate is increased.

The invention relates to a double vortex electric field assisted ultrafast laser machining system and a machining method thereof. The system comprises an ultrafast laser, a polarization modulation lens, a beam amplifier, a focusing lens, a coaxial air suction device, a double helix electrode and a five-axis displacement platform. The machining method comprises the following steps that firstly, a workpiece is clamped on the five-axis displacement platform where the double helix electrode is fixed; then a power supply is connected with the double-helix electrode, and the double-helix electrode is enabled to generate a double vortex electric field of 0-10<5>V/m by controlling the voltage of the power supply; and the ultrafast laser is started, polarization modulation, light beam amplificationand reflect focalization are carried out on laser beams, then the laser beams pass through the double vortex electric field to act on the surface of the workpiece, and meanwhile, coaxial air suctionis carried out above the workpiece so as to remove plasma. According to the double vortex electric field assisted ultrafast laser machining system and the machining method thereof, movement control over the plasma is achieved by utilizing the double vortex electric field, and the coaxial air suction is combined, so that high-efficiency and high-quality laser micro-nano machining and laser drillingare achieved.

The invention belongs to the technical field of adsorption materials, and provides a preparation method of a spherical active carbon and a product and applications thereof. The inventor surprisingly finds that in the preparation method, by regulating the activation processing atmosphere and processing temperature, spherical active carbon with a controllable pore size can be prepared, the yield ishigh, and the cost is low. The mass percentage of spherical active carbon with a pore size of 3-8 nm is 95% or more. By selecting different technologies, spherical active carbon with different pore sizes can be prepared, the requirements of different fields can be satisfied; and moreover, the active carbon has an excellent adsorbing property, is capable of efficiently adsorbing harmful gas such asCO, H2S, HCl, SO2, NOx, and the like, and is applied to food industry for food preparation and/or food discoloring.

The invention discloses a combined nozzle, comprising: a spray head and a pipe body, the spray head is installed on the top of the pipe body; a boss is provided at the bottom of the spray head; a groove is provided at the top of the pipe body; the spray head There are a number of first atomization holes, and a telescopic rod is installed in the middle of the nozzle; a nozzle board is installed outside the nozzle, and the nozzle and the nozzle board are connected by a telescopic rod. Several second atomization holes; the number and distribution of the first atomization holes and the second atomization holes are the same; the corresponding first atomization holes and the second atomization holes are connected by rubber The pipes are connected; the pipe body is sequentially provided with an injection chamber, a pressurization chamber, a diversion chamber and a water inlet chamber from top to bottom, and the ejection chamber and the diversion chamber are both tapered. Through the above method, the present invention provides a combined nozzle. The nozzle adopts a combined structure, which makes maintenance and replacement more convenient, and the atomization rate can be changed according to requirements to meet the needs of different fields.

The invention provides a Cu-Cr alloy and an ultrasonic-assisted smelting method thereof. The ultrasonic-assisted smelting method of the Cu-Cr alloy comprises the following steps: mixing copper particles with high-purity electrolytic chromium sheets, preparing a Cu-Cr intermediate alloy in a vacuum high-frequency induction furnace, mixing the obtained intermediate alloy with electrolytic copper blocks, and carrying out dilution in a medium-frequency induction furnace; and after the intermediate alloy is molten and is completely mixed with a melt, carrying out ultrasonic treatment on the metal melt for 0.5-5 min, and after the ultrasonic treatment is completed, pouring the alloy liquid into a water cooling mold to obtain a Cu-Cr alloy material. The whole process is carried out under non-vacuum standard atmospheric pressure. The smelting method is applied to a copper-based pseudo alloy for the first time, the quality of a cast ingot is improved, the microstructure of the as-cast alloy is improved, and the mechanical property of the alloy is improved.