85results about How to "Effective bondage" patented technology

The invention discloses a composite cathode material for secondary aluminum batteries. The composite cathode material is formed by compounding microporous carbon spheres, sulfur and graphene, has good electric conductivity and is capable of effectively suppressing that polysulfide dissolves in electrolyte to cause the shuttle effect. The preparation method of the composite cathode material comprises the following steps: firstly compounding the microporous carbon spheres and the sulfur, and then cladding the outer layer of the composition with a graphene sheet layer. The preparation method is simple in process and low in cost, toxic raw materials are not used, environment friendliness is achieved, the energy density is high, the utilization ratio of the sulfur is high, and the rate capability and the cycle performance of the secondary aluminum batteries are improved greatly.

The invention discloses a CoS graded nano-bubble composite S positive electrode material of a lithium sulfur battery, and belongs to the technical field of the lithium sulfur battery. The preparationmethod of the CoS graded nano-bubble composite S positive electrode material comprises the steps of firstly, synthesizing TiO2 composite hexadecylamine nanoparticle by hydrolysis of titanium isopropoxide; secondly, coating a surface of the TiO2 composite hexadecylamine nanoparticle with a layer of MOF-loying PVP so that the TiO2 composite nanoparticle can be absorbed during the growth process of ZIF67 and a surface is embedded and an interior are buried onto ZIF-67 to form a Chinese data structure; and finally, performing vulcanization to obtain a CoS graded nano-bubble material with a plurality of CoS hollow spheres sleeving a CoS hollow polyhedron by hydrothermal method of thioacetamide, and injecting S into the CoS graded nano bubbles by a melting method to obtain a final material. TheCoS graded nano-bubble composite S provided by the invention is used as a lithium sulfur battery positive electrode, relatively high charge-discharge performance and stable cycle property are shown, and the important application value in the field of the lithium sulfur battery is achieved.

The invention discloses a polymer solar cell with a subwavelength anti-reflective structure. The polymer solar cell comprises a cover plate, a cathode, a donor layer, an acceptor layer and an anode, wherein the donor layer is a conducting polymer layer; the subwavelength anti-reflective structure is arranged on one side of the conducting polymer layer which is close to the cathode and comprises a plurality of bulges of which the structure sizes are less than or equal to 400 nanometers*400 nanometers*400 nanometers; and by the subwavelength anti-reflective structure, the reflective action of light is weakened greatly, and light beams are constrained effectively, so that the light conversion efficiency of the polymer solar cell is improved. The invention also discloses a method for preparing the polymer solar cell with the subwavelength anti-reflective structure. High rigidity among conjugated molecular chains in a conducting polymer is reduced and the flow characteristic of the conducting polymer is improved by an ultrasound field by a processing method for ultrasound composite thermal transfer print, so that the impressing quality is higher. The method is low in processing cost and efficient in processing and has a bright application prospect, and the polymer solar cell is easy to produce industrially.

The invention discloses a device for improving the detection sensitivity of laser-induced plasma spectrum, aiming at difficulties of LIBS analysis technology in improving the detection sensitivity and reducing effectively the detection limit. According to the theory of the device, based on the physical mechanism of laser-induced plasma and the spatial-temporal evolution process of the plasma, the laser-induced plasma intensity is enhanced and background radiation is reduced by changing the outer space structure and the environment of the laser-induced plasma; and by utilization of multichannel spectral signal collection in different angles, coupling transmission of spectral signals to a spectrograph is achieved by utilization of multi-core fiber, the maximum collection and utilization of spectral signals can be achieved, and space distribution characteristics of the laser-induced plasma can be obtained to improve the detection sensitivity of elements to be detected. The device is compact in structure and can be used conveniently and flexibly. The device is suitable for element detection of all solid materials using the LIBS technology as an analysis means, and can be used in various work environments indoor and outdoor. The device is especially suitable for on-site element detection.

The invention relates to an LED extension structure with P type superlattice and a preparation method thereof. The LED extension structure orderly comprises the following parts from the lower side to the upper side: a substrate, a nucleating layer, a buffer layer, n type GaN layer, a multiple quantum well luminescent layer, a first P type GaN layer, P type AlInN/GaN superlattice and a second P type GaN layer; the P type AlInN/GaN superlattice is composed of the AlInN potential well layer and GaN barrier layer overlapped periodically. The AlInN/GaN superlattice structure is adopted for effectively raising the hole concentration, effectively resisting the electron and useful for expanding the hole, the mismatch of the structure lattice is little, the crystal quality is high after growing. The GaN-based LED with P type structure containing AlInN/GaN superlattice can effectively improve the luminous efficiency of the device.

The invention relates to a caterpillar type straw pick-up vehicle, and belongs to the technical field of agricultural machines. The caterpillar type straw pick-up vehicle comprises a caterpillar type chassis, a pick-up table and a grass collecting box, and a conveying gap bridge is communicated between the pick-up table and the grass collecting box; the pick-up table comprises a grass poking roll shaft, a pick-up roll shaft and an auger, the auger is arranged adjacent to an inlet of the gap bridge, the two ends of the grass poking roll shaft are hinged to the pick-up table through connecting rods, the grass poking roll shaft and the pick-up roll shaft are arranged vertically oppositely and are capable of rotating in opposite directions, multiple poking teeth are fixed to the grass poking roll shaft along the axis, multiple elastic teeth are fixed to the pick-up roll shaft along the axis, the poking teeth on the grass poking roll shaft and the elastic teeth on the pick-up roll shaft are arranged alternately, and the projection, in the axial direction, of the track formed by rotational scanning of the poking teeth on the grass poking roll shaft coincides with that, in the axial direction, of the track formed by rotational scanning of the elastic teeth on the pick-up roll shaft. The caterpillar type straw pick-up vehicle is capable of picking up and harvesting straw in a common smashed state and capable of collecting and transferring straw bundles.

The invention relates to the field of hot rolled strip steel packaging, in particular to a radial fastening device of a high-strength hot rolled strip steel coil. The radial fastening device comprises a radial fastening strip. The radial fastening strip comprises a large horizontal plate, middle connection plates, small horizontal plates and bolt holes. The large horizontal plate, the middle connection plates and the small horizontal plates are formed by cold-bending hot rolled strip steel. The middle connection plates and the small horizontal plates are each symmetrically arranged on the two sides of the large horizontal plate in a bent mode. The multiple bolt holes are formed in the small horizontal plates. Through the design of the radial fastening strip, an auxiliary storage table and an automatic transport mechanism, the degree of automation is increased, efficiency is improved, excessive manual participation is avoided, labor is saved, and the problem of casualties in the operation process is avoided.

The invention relates to a luggage case, in particular to a telescopic luggage case with a drying function. The telescopic luggage case comprises a case cover, a case bottom, separating plates and telescopic links, wherein multiple separating plates are arranged, the case cover, the separating plates and the case bottom are sequentially arranged from top to bottom, and the case cover and the separating plate which are adjacent, the adjacent separating plates as well as the separating plate and the case bottom which are adjacent are connected by virtue of the telescopic links respectively; a first flange is arranged at the edge of the lower surface of the case cover, and a first wrapping fabric is arranged between the first flange and the adjacent separating plate; a second flange is arranged at the edge of the upper surface of the case bottom, and a second wrapping fabric is arranged between the second flange and the adjacent separating plate; and a third wrapping fabric is arranged between the adjacent separating plates. The luggage case provided by the invention has the advantages that articles can be classified and placed, the luggage case can be conveniently used by people, and the luggage case also has a volume-adjustable driving function, so that the people can carry fragile objects conveniently.

The invention relates to a medical instrument applied to a skin wound suture, in particular to a skin wound closing device. The skin wound closing device mainly comprises a left base band and a right base band which are arranged along the two sides of a skin wound respectively, a plurality of fastening bands are connected between the left base band and the right base band, the fastening bands are different in height, and a dressing body used for healing the skin wound and preventing infection of the skin wound is arranged below the fastening bands. By means of the structure, in dressing changing, only part of the fastening belts small in height are opened, the dressing body is made to penetrate from the part below the fastening bands, the other part of the fastening bands large in height are still maintained in the buckling state, the skin on the two sides of the skin wound is locked, the skin wound healing effect is maintained, after dressing changing, the low fastening bands can effectively bond the dressing body so that the dressing body can make full contact with the skin wound, and the using effect of medicine is improved; furthermore, the dressing body can effectively absorb tissue liquid seeping out of the skin wound, and a dry recovery environment is provided for skin wound healing.

The invention provides a composite material based on a self-supporting reduced graphene oxide coil, and a preparation method thereof, and belongs to the field of researches on nanometer materials. Thepreparation method comprises: preparing a mixed solution from an additive and graphene oxide, freezing the mixed solution by using liquid nitrogen, further drying in a freeze drying device, treatingat a different temperatures to obtain a partially or completely reduced self-supporting graphene oxide coil network structure material, and combining with a predetermined material to produce the composite material. According to the present invention, the stacking of graphene can be avoided through the structure of the composite material; the large specific surface area of graphene is used, the connection between the coils is good, and a certain flexibility is achieved; and when the composite material is sulfur and is used as the lithium-sulfur battery positive electrode, the use of the bindercan be avoided by using the self-supporting structure of the partially or completely reduced graphene oxide coil network structure material, the specific capacity of the electrode can be increased, and the Coulomb efficiency and the cycle stability of the battery can be easily improved through the extremely large specific surface area of the graphene coil and the oxygen-containing functional groupon the surface.

A hydrogen storage electrode alloy of amorphous magnesium ¿C nickel series is prepared from chemical compositions of MgNiBaAb + X wt.% ( CFn ) here A ¿C one or above one element of Si , S ,C ,P ,AI , Ge, Se or I ; CFN ¿C fluorographite ; 0.01 íœ a íœ 0.5 ; 0 íœ b íœ 0.4 ; x ¿C wt.% content relative to MgNiBaAb ; and 0.01 íœ x íœ 5.5 .

The invention relates to a preparation method and application of a high-stability zinc-iodine battery and an electrode material. The electrode material comprises a covalent organic framework compound and active iodine, wherein the active iodine is loaded in a pore structure formed by the covalent organic framework compound. The preparation method comprises the steps of mixing the covalent organic framework compound with active iodine, and carrying out heating treatment in a tubular furnace to obtain the composite material. The iodine positive electrode is effectively stabilized, and the electrochemical performance of the zinc-iodine battery is improved. The material has good electrochemical performance, and has the characteristics of good capacity and Coulombic efficiency retention in the cycle process.

The invention provides an ultraviolet LED chip and a manufacturing method thereof. A thin AlxInyGa1-x-yN insertion layer is inserted between the well barriers, and the lattice constant of the AlxInyGa1-x-yN insertion layer is between InGaN and AlGaN, so that lattice mismatch between the well barriers is reduced, the crystal quality of a well barrier interface is improved, the intensity of a polarization electric field is weakened, and the improvement of the power of an ultraviolet LED chip is facilitated. The Al component and the In component are subjected to doping gradient optimization, so that more effective electron constraint and more uniform hole injection are realized, carriers are distributed in the whole multi-quantum well structure region in a more balanced manner, and the ultraviolet LED chip with high luminous efficiency is realized. The AlxInyGa1-x-yN insertion layer is generated by adopting a pulse source passing method, and Al and In atoms have enough time to migrate onthe surface, so that two-dimensional layered growth is facilitated, meanwhile, material components can be more finely controlled, and the crystal quality of the AlxInyGa1-x-yN insertion layer can be further improved.

The invention provides an electric core, which comprises a negative pole piece, a positive pole piece, a diaphragm, an end part and an adhesive film, wherein the diaphragm is arranged between the negative pole piece and the positive pole piece; the diaphragm has an extension part exceeding the negative pole piece and the positive pole piece at the end part; and the adhesive film has a main body adhered to the end part and a connecting part extending from the main body, and the connecting part is adhered with the extension part. The invention aims to provide an electric core which can effectively eliminate the short circuit failure caused by diaphragm shrinkage. The invention further provides an electrochemical device and a method of manufacturing the electrochemical device.

The invention discloses a preparation method and application of a high-sulfur content carbon and sulfur lithium ion battery material. The method comprises the following steps: adding elemental sulfur into a reaction vessel, injecting hexachlorobutadiene to perform closed reaction under the conditions that the temperature is 100-300 DEG C, and the pressure is 0-15 MPa, centrifuging after post-treatment, precipitating and washing, and drying to obtain a primary product; performing heat treatment in a tube furnace for 30 minutes-4 hours under the inert gas protection. The invention provides the application of a novel high-sulfur content carbon and sulfur material to a lithium ion battery. The method is extremely simple, the raw material source is rich, carbon atoms and sulfur atoms of the prepared novel high-sulfur content carbon and sulfur material are combined in a way of a chemical bond, and the mass percentage occupied by the content of sulfur elements in the material can reach 10-80 percent. The carbon and the sulfur atoms are mutually combined through the chemical bond, the sulfur atoms are uniformly dispersed in the material so as to be in full contact and react with lithium ions in the charging and discharging processes, therefore the specific capacity and the cycling performance of the lithium ion battery are greatly improved.

The invention discloses a method for producing cordycepin with self-assembly silicon plastid electrostatic spinning fibrous membrane immobilized cells. The method comprises the following steps that Chinese caterpillar fungus protoplasts are wrapped into a stable silicon plastid formed by organic-inorganic hybrid lipids by utilizing a electrostatic self-assembly method; chitosan, polyvinyl alcoholand polyethylene oxide are completely dissolved into an acetic acid solution, glycerol is added, then silicon plastid is added, a nanometer fibrous membrane is prepared with electrostatic spinning, the nanometer fibrous membrane is rolled, and the rolled nanometer fibrous membrane is charged in a chromatography column; a mixed solution of glucose, ribose, potassium dihydrogen phosphate, magnesiumsulfate, yeast powder and adenine is prepared, filtering and bacteria removal are carried out on the mixed solution, the mixed solution flows through the chromatography column at a certain flow rate,gas is introduced at the lower part of the chromatography column at the same time, and through detection, an effluent contains the cordycepin. The method with the immobilized cells has the characteristics of high efficiency, bacterium contamination resistance, high yield and high concentration of a product and is beneficial to separation and purification of a subsequent product.

The invention provides a direct injection molding polylactic acid/polypropylene chemical micro-foaming composite material and a preparation method thereof. The preparation method is characterized in that a PLA/PP composite material and a chemical foaming agent are mixed uniformly according to a suitable ratio, and the resulting mixture is subjected to micro-foaming molding in an injection moldingmachine, so that the direct injection molding polylactic acid/polypropylene chemical micro-foaming composite material is prepared, wherein the PLA/PP composite material is prepared from the followingcomponents in parts by weight: 15-25 parts of HMSPP, 10-20 parts of functionalized PP, 47-67 parts of modified PLA, 3-8 parts of modified inorganic nucleating agent, 0.2-0.4 part of antioxidant, 0.5-1part of lubricant, and 0-2 parts of other additives. The prepared PLA/PP composite material has high melt strength and excellent mechanical properties; an injection micro-foaming molding process canbe directly adopted to obtain a product with fine and uniform cell pores and an average diameter less than 79 [mu]m; and the molding process is simple, and product design degree of freedom is high, therefore, industrialized application is facilitated, and high-volume production of the product can be achieved.

The invention discloses a large-mode-field triple-clad optical fiber, a preparation method thereof and an optical fiber laser. The large-mode-field triple-clad optical fiber comprises a fiber core, afirst cladding wrapping the fiber core and a second cladding wrapping the first cladding. The fiber core is porous glass sintered after being doped with a co-dopant, and the co-dopant is a mixture ofytterbium ions and at least one of aluminum chloride, ammonium dihydrogen phosphate and cerous nitrate; the first cladding is porous glass that is obtained by doping with at least one of germanium oxide and ammonium hexafluorosilicate and then performing sintering; and the second cladding is porous glass sintered after heavily doping ammonium hexafluorosilicate. Porous glass is adopted as a matrixmaterial, high-concentration and high-uniformity doping of rare earth ions and fluorides can be achieved by fully utilizing the characteristic that the porous glass has nanoscale pore channels whichare communicated with one another, and the refractive indexes of the first cladding and the second cladding are controlled by adjusting the concentration of doping ions; therefore, the laser is effectively bound in the fiber core, and the transmission efficiency and stability of the optical fiber are effectively improved.

The invention discloses a fixing device used for fixing the rat testis for injection. The fixing device comprises a positioning tube, wherein one end of the positioning tube is cone-shaped, a bearingtable is arranged at the other end of the positioning tube, a binding part is arranged in the positioning tube, a sliding groove is formed in the bearing table, a propping seat is arranged in the sliding groove, a propping cam is rotationally arranged on the propping seat, a hole seat is arranged on the bearing table, a U-shaped elastic binding arm is arranged on the hole seat in a swinging manner, two free ends of the elastic binding arm are bent to form inserting pins which are inserted into the hole seat, a first positioning groove, a first converging bulge, a second positioning groove, a second converging bulge and a third positioning groove are sequentially formed in the matched surface, attached to the outer wall of the hole seat, of the elastic binding arm, and the second positioning groove is deeper than the first positioning groove and the third positioning groove. The fixing device is simple in overall structure and can fix the rate testis, thereby facilitating cell transplantation tests.

The invention discloses a three-dimensional spacer fabric structure electrothermal composite material and a preparation method thereof. The composite material comprises an electrothermal layer and a supporting layer, and the electrothermal layer and the supporting layer are bound as a whole by spacer yarns, so that a hollow heat insulation layer is formed between the electrothermal layer and the supporting layer, the electrothermal layer is composed of electrothermal layer warps and electrothermal layer wefts, and the supporting layer is composed of supporting layer warps and supporting layerwefts. The preparation method comprises the steps that each layer of the warps and spacer yarns are arranged according to a yarn selection scheme; each layer of the warps is synchronously introduced;all the layers of warps are interwoven with one another: spacer sheets are inserted between the electrothermal layer and the supporting layer, and the spacer yarns are interwoven with one another to weave each layer of the yarns as a whole; taking up of a stepping motor is conducted; the material is taken down from a machine after needed weaving circulations are completed. The material has the advantages of being simple in structure, light in weight, good in comprehensive structural performance, moisture resistant and aging resistant, impact resisting and the like, and the material is extensively applied in the domestic and military fields.