34results about How to "Enhanced interface energy" patented technology

The invention provides an application method of cold field plasma discharge assisted high energy ball milled powder and a plasma assisted high energy ball milling device using the cold field plasma discharge assisted high energy ball milling method. The method comprises the following steps: utilizing dielectric barrier discharge to generate plasmas, introducing a dielectric barrier discharge electrode bar into a high-speed vibrating ball-milling tank, on one hand, requiring a solid insulating medium on the outer layer of the electrode bar to simultaneously bear high-voltage discharge and mechanical shock failure of the grinding ball, and on the other hand, requiring the high-speed vibrating ball milling device to uniformly process the powder. The method is based on the ordinary ball milling technology; the processing efficiency and the effect of the ball mill can be greatly improved by the following steps: under a non-heat-balance discharge condition of the pressure that the discharge space pressure is set to be about 102-106 Pa, introducing the discharge plasmas to input another effective energy to the processed powder, promoting the powder to be processed to be subjected to combined action of the mechanical stress effect and the heat effect of the external electric field, and further accelerating refining of the powder and promoting the alloying progress.

The invention relates to a high-chromium cast iron composite inoculant, a preparation method and an application thereof, in particular to cast iron alloy containing chromium. The high-chromium cast iron composite inoculant is a nanocrystalline high-chromium cast iron composite inoculant containing rare-earth ferrosilicon and ferroboron. The high-chromium cast iron composite inoculant comprises Fe-Ce-Si-Ca intermediate alloy and Fe-B intermediate alloy, wherein the weight ratio between the Fe-Ce-Si-Ca intermediate alloy and the Fe-B intermediate alloy is 1:0.07-0.13. The nanocrystalline crystal grains of the inoculant are less than 100nm, the inoculant is a flaky inoculant obtained by carrying out melt fast-quenching processing on raw materials which comprise commercially purchased rare-earth ferrosilicon and commercially purchased ferroboron, the inoculant is used for carrying out crystal grain and tissue refining processing on the tissue of the high-chromium cast iron alloy of high-chromium cast iron wear parts used for engineering machinery, the processing method is a metal melt casting method, the casting defect of the existing casting technology of the high-chromium cast iron alloy is overcame, and matrix crystal grains and cementite phases are obviously refined, so that the overall mechanical properties of the high-chromium cast iron alloy are obviously improved.

The invention provides a gel polymer electrolyte, a polymer battery containing the same, and a preparation method of the polymer batter. The gel polymer electrolyte comprises polymer, electrolyte, organic solvent, and inorganic stuffing, the electrolyte, organic solvent, and inorganic stuffing disperse in the polymer, wherein the inorganic stuffing is a metal and ceramic compound material. The gel polymer electrolyte has the advantages of higher conductivity, mechanic properties, electrochemical stability and thermostability, and high porosity, and is capable of improving the solution absorption performance of polymer.

The invention discloses a composite inoculant used for grey cast iron and a preparation method and an application method of the composite inoculant, relating to cast iron alloy. The inoculant is an inoculation refiner that consists of Fe-Ce-Is-Ca intermediate alloy and Fe-B-V intermediate alloy and takes the shape of a nanocrystal sheet. The nanocrystal particle is smaller than 100nm, and the average thickness, the average width and the average length of the sheet respectively range between 0.3-0.5mm, 0.3-0.75mm and 0.9-1.6mm. The preparation method is a fast quenching melt spinning method. The application method is a metal fusion casting process. When used for crystal particle and tissue refining treatment on the grey cast iron alloy tissue of grey cast iron wear resistant parts for engineering machinery, the inoculant overcomes casting defects, and obviously refines matrix crystal particle and cementite phase, thus notably improving the comprehensive mechanical property of grey cast iron alloy.

The invention discloses a preparation method of a composite lithium metal negative electrode with a three-dimensional structure and a product of the composite lithium metal negative electrode. An inherent pore structure of carbon fiber cloth taking thin-crystal graphite flakes as pore walls not only can relieve volume change in a lithium deposition/dissolution process, but also can introduce a lithium storage mechanism through a lithium insertion/extraction path; and meanwhile, the carbon cloth has light weight and good flexible mechanical properties, and can inhibit the growth of lithium dendrites. In the lithium electrochemical deposition process, the metal lithium and the cobalt fluoride are subjected to an irreversible reduction reaction to form cobalt nanoparticles and the lithium fluoride; the cobalt nanoparticles have smaller binding energy with the lithium metal, so that nucleation sites can be increased, the nucleation overpotential of the lithium metal is reduced, and uniform diffusion of lithium ions is promoted. The lithium fluoride formed in situ has good interface contact with the carbon fiber cloth, has high mechanical modulus, high chemical stability and high interface energy with lithium, and can uniformize lithium ion flux and effectively inhibit dendritic crystal growth of lithium.

The invention discloses a high-coercivity permanent magnetic ferrite and a preparation method thereof. According to the method, one or a mixture of two or more selected from the group consisting of treated raw materials, i.e., CaCO3, SrCO3 and Fe2O3 are added on the basis of the mass of strontium ferrite pre-sintered material in the procedure of batching, and CaCO3 or SrCO3 is definitely used. The method employs raw materials used in conventional processes and treats the raw materials including CaCO3, SrCO3 and Fe2O3; since one powder selected from or mixed powder of the treated CaCO3, SrCO3 and Fe2O3 is added in the procedure of batching and the powder has substantially increased surface areas and good dispersibility, a contact area is increased and great interfacial energy is produced among pre-sintered ferrite particles after the powder is mixed with the pre-sintered ferrite particles, so growth of ferrite crystal grains is inhibited, the single domain structure of a magnet is maintained, and distribution of crystal grains in the magnet is uniform; and thus, the coercive force of the magnet is improved.

The invention relates to a preparation method of a high-performance all-solid-state lithium ion battery. The invention aims to solve the problem of low conductivity of a diaphragm of the all-solid-state lithium ion battery prepared by the existing method. The method comprises the following steps of 1, preparing a polymer electrolyte precursor solution; 2, preparing a polymer electrolyte precursor solution monomer; 3, preparing the polymer electrolyte precursor solution monomer polymerization; 4, preparing the polymer electrolyte of the all-solid-state lithium ion battery; and 5, assembling the battery. The ionic conductivity sigma of the diaphragm of the all-solid-state lithium ion battery prepared by the method reaches 1.1*10 <-3> S.cm <-1>, the safety performance of the lithium ion battery is greatly improved, and the all-solid-state lithium ion battery has the advantages of high charge/discharge specific capacity, stable cycle performance, safe operation, simplicity and convenience and the like, and is suitable for large-scale preparation and commercial application. The method is applied to the field of all-solid-state lithium ion batteries.

The invention discloses a high-strength antibacterial polyethylene film and a preparation method thereof. The polyethylene film is a film formed by taking a polyethylene microporous film as a substrate and an ethylene-vinyl alcohol copolymer film as a surface layer and chemically bonding the polyethylene microporous film and the ethylene-vinyl alcohol copolymer film through polyvinyl alcohol. The high-strength antibacterial polyethylene film has the beneficial effects that a pomegranate extracting solution is added, so that the bonding strength and the antibacterial property are improved; an ethylene-vinyl alcohol copolymer film is prepared as a surface layer by using a water-induced reversed-phase method, and the precipitation of PVP is accelerated and the formation of pores is accelerated by using the synergistic effect between polyhexamethylene guanidine propionate and PVP, so that the time cost is reduced; acid groups in the polyhexamethylene guanidine propionate are utilized, so that the polyhexamethylene guanidine propionate/metal nanoparticles spontaneously move towards the surface of the film to form a hydration layer, and the film is antibacterial and antifouling; and the chelating property of the polyhexamethylene guanidine propionate on the metal nanoparticles is utilized, the polyhexamethylene guanidine propionate is attached to the surfaces of the metal nanoparticles, agglomeration of the metal nanoparticles is inhibited, and the uniform dispersity is improved.

The invention relates to a preparation method for a ceramic medium printing sizing agent and belongs to the technical field of printing sizing agents. According to the invention, air bubbles with larger diameters are eliminated through slow mechanical stirring and then a de-foaming agent is used for replacing the bubble walls of the air bubbles, so that the air bubbles with small diameters in thesizing agent are merged into the air bubbles with larger diameters; the pressure in the air bubbles is increased in the manner of vacuumizing and then the air bubbles are separated from the sizing agent and are broken, so that the de-foaming effect can be achieved; when the liquid evaporation pressure is ignored, the interfacial energy of solid-liquid interface is equivalent to the interfacial energy of solid surface according to young's equation, and the wetting property between water and powder can be promoted in the manner of increasing the interfacial energy of ceramic powder surface, so that the purpose of reducing air bubbles can be achieved; in the cooling stage of the preparation process of modified ceramics, the interfacial energy of ceramics can be increased by increasing the cooling speed of the ceramics, so that the air bubbles can be reduced. The ceramic medium printing sizing agent prepared according to the invention has the characteristics of excellent wetting property and few air bubbles, the production equipment is common and the raw material cost is low.

The invention discloses tread rubber for the tire of a dune buggy. The rubber comprises the following components in parts by weight: 10-15 parts of natural rubber, 8-12 parts of synthetic rubber, 35-45 parts of reclaimed rubber, 0.6-1 parts of sulfur, 0.6-1 parts of zinc oxide, 0.2-0.4 parts of stearic acid, 0.4-0.6 parts of an accelerant, 2-3 parts of carbon black, 2-3 parts of a reinforcing agent and 1.5-2 parts of an anti-aging agent. The reclaimed rubber is prepared by the following method: a, crushing waste tires to obtain waste rubber powder; b, adding a softener and a regenerant into the waste rubber powder, and performing banburying for 10-15 min at the temperature of 110-130 DEG C; and adding the reinforcing agent and the plasticizer to mix for 10-15 minutes at the temperature of50-60 DEG C, and performing cooling to obtain the reclaimed rubber. The tread rubber provided by the invention has the advantages of low cost, good wear resistance and good tear resistance.

The invention discloses a fully-biodegradable high-barrier sheet for a coffee capsule cup body, and a preparation method thereof, and relates to the technical field of packaging materials. The sheet is of a five-layer structure and comprises an inner film layer, bonding layers arranged on two sides of the inner film layer and base material layers arranged on ones side, away from the inner film layer, of the bonding layers; the raw materials of the inner film layer comprise high-barrier degradable resin; the raw material of the bonding layer is degradable bonding resin; the raw material of thebase material layer is fully-degradable plastic; the high-barrier degradable resin is BVE8049 provided by Japanese synthetic chemistry; and the degradable adhesive resin is BTR8002P provided by Japanese synthetic chemistry. The sheet provided by the invention has excellent degradability, water and oxygen barrier property and fragrance retention property, and good impact resistance and thermal deformation resistance.

The invention belongs to the technical field of preparation of sealing materials and particularly relates to a preparation method of a silicon carbide ceramic sealing material. The preparation methodtakes rice husk ash as a raw material and comprises the following steps: adding palm wax and peels to obtain fermentation filter dreg; mixing the fermentation filter dreg and diamond grains to obtainridged powder; putting the rigid powder into a muffle furnace and roasting to obtain self-lubricating silicon carbide micro-powder; mixing the self-lubricating silicon carbide micro-powder with additives including maganthophyllite powder, white corundum, walnut shell powder and the like to obtain a material to be sintered; finally, putting the material to be sintered into a graphite mold to obtainthe silicon carbide ceramic sealing material. Nitrogen-containing composite powder and a boron-containing ceramic binding agent are mixed and then are hotly pressed and sintered to form a hexagonal boron nitride crystal, so that the wear-resisting performance and self-lubricating performance of the sealing material are improved; the fermentation filter dreg containing the rice husk ash is reducedand carbonized on the surface of a diamond, and the densification of the sealing material is promoted; then a polytetrafluoroethylene film is sprayed to form an impermeable lubricating protection layer on the surface of the sealing material; the silicon carbide ceramic sealing material has a wide application prospect.

The invention relates to a Sm2Co17 type rare earth permanent magnet material and a preparation method thereof. The Sm2Co17 type rare earth permanent magnet material consists of the following components in percentage by mass: Sm, heavy rare earth, Co, Fe, Cu and Zr. The preparation method comprises the following steps: preparing a samarium cobalt-based rare earth permanent magnet material sintered blank, heating the sintered blank to 1150-1200 DEG C by adopting microwaves at a heating speed of 15-90 DEG C/min in a protective atmosphere, carrying out solid solution and heat preservation, rapidly cooling by circulating gas to obtain a microwave solid solution blank, heating the solid solution blank to 820-880 DEG C by adopting microwaves at a heating speed of 15-90 DEG C/min, carrying out aging and heat preservation for 20-170min, and cooling. The method is reasonable in process design and convenient to operate, the preparation period of the Sm2Co17 type rare earth permanent magnet material can be greatly shortened, the prepared Sm2Co17 type rare earth permanent magnet material is better in magnetic performance, and remarkable industrial application value and economic benefits are achieved.

A method for manufacturing a structure includes: supplying an active element provided with a front and rear face connected by a contour; assembling the front face and a main face of a support; filling a space of interconnections between the front face and the main face with glue. The method also includes, before the assembling, forming, by a method other than a plasma method, a first passivation layer covering the contour, and made from a first compound that makes it possible to limit the wetting of said contour by the glue regarding the front face and the main face.