40results about How to "Increase the amount of compounding" patented technology

The invention relates to a nano carbon material with a network structure consisting of polymer chains, in particular to a nano carbon sulfur composite material with a network structure suitable to be used in a secondary lithium sulfur battery anode and a preparation method thereof. The carbon sulfur composite material is formed by adopting the following steps of: introducing functional groups onto carbon particles by adopting the electric conductivity and the porosity of a carbon material and the reaction capacity of similar condensed aromatics of the carbon material and by means of an irreversible chemical reaction; introducing the polymer chains, wherein the polymer chains are stretched, bent and cross-linked on the surfaces of the carbon particles to form a cross-linked network structure; and compounding a sulfur element or a polysulfide (m is more than 2) containing -Sm- structure into the network structure to form the nano carbon sulfur composite material with the network structure. The carbon sulfur composite material has a rich cross-linked network structure, nano-scale network pores constrain the sulfur element or the polysulfide (m is more than 2) containing the -Sm- structure in the network, and the active substances are limited in a certain region to react, so that the composite material has predominant electrochemical performance.

The invention relates to a carbon-sulfur-shell matter composite material having a network dual-core shell structure and a preparation method thereof. The carbon-sulfur-shell matter composite material has a carbon-sulfur-shell three layer structure, a central core (inner core) is nano carbon particles, sulfur elemental or a polysulfide containing-Sm-structure (m>2) is directly deposited on the nano carbon particles, or functional groups are introduced onto the nano carbon particles by use of polycyclic aromatic hydrocarbon like reaction capacity of the carbon material and through an irreversible chemical reaction, polymeric chains are introduced in, a crosslinked network structure is formed through stretching, bending and crosslinking of the polymeric chains on the surface of the nano carbon particles, the sulfur elemental or the polysulfide containing the-Sm-structure (m>2) is composited onto the crosslinked network structure to form a nano sulfur layer having a network structure, then a mono-core shell nano composite material having a network structure is obtained and is used as a second layer (outer core) of the carbon-sulfur-polymer composite material having the network dual-core shell structure, an outermost layer is a shell matter layer, electronic and/or ionic conductivity of the material are/is improved, dissolving loss of discharge products can be further inhibited, and structural stability of the material is improved. The material is suitable for positive poles of lithium sulfur batteries, and has a prominent effect on improvement of cycle stability of the lithium sulfur batteries.

The present invention discloses one kind of heat resistant filter material and its use. The heat resistant filter material consists of one base material layer and one combined filter layers, the base material layer is made of inorganic fiber and/or heat resistant organic fiber, and at least one filter layer contains both inorganic fiber and heat resistant organic fiber, with the diameter of the inorganic fiber being smaller than that of the heat resistant organic fiber. The heat resistant filter material is used in filter. It has excellent complexing performance between the inorganic fiber and the heat resistant organic fiber, high dust collecting efficiency, high dust impact resistance, high antiwear performance, high heat shrinkage tolerance, etc.

The invention provides a novel LED epitaxial growth method which can effectively improve the lighting efficiency of LED epitaxial structures. The method comprises the links of N-GaN layer growth, multi-quantum well layer growth and P-GaN layer growth, wherein the multi-quantum well layer is of a structure of a plurality of pairs of AlxGa <1-x> N/InyGa <1-y> N, wherein x is more than 0 and less than 1, and y is more than 0 and less than 1; the multi-quantum well layer growth link includes three growth stages in sequence, wherein the AlxGa1-xN quantum barrier is subjected to p type doping in the first stage, the AlxGa1-xN quantum barrier is not doped in the second stage, and the AlxGa1-xN quantum barrier is subjected to n type doping in the third stage; a p type doped AlGaN stopping layer grows, and then the P-GaN layer growth link is performed.

The invention relates to a preparation method of composite fiber. The preparation method comprises the following steps: immersing nascent fiber in graphene substance dispersing solution and then cooling and drying to obtain composite fiber, wherein the range of immersing temperature is at high-elastic-state temperature of the nascent fiber material. By immersing nascent fiber into graphene substance dispersing solution at the high-elastic-state temperature, the compounding of the graphene substances inside and outside the fiber can be realized, and the evenness and firmness of the graphene substances in the fiber can be increased; the conductivity of the fiber can be enhanced by adding graphene and/or biomass graphene; the far infrared performance of the fiber can be further strengthened by adding graphene oxide and/and biomass graphene; and the graphene substances can be effectively added inside the fiber by adopting the preparation method, and the fiber is externally cladded with the graphene substances.

The invention relates to a preparation method of composite fiber. The preparation method comprises the following steps: (1) immersing nascent fiber in graphene substance dispersing solution with particle size of being less than 1mum for the first time, to obtain fiber immersed with graphene substances with the particle size of being less than 1mum; and (2) immersing the fiber immersed with graphene substances with the particle size of being less than 1mum, obtained in the step (1), into dispersing solution containing graphene substance with particle size of being less than 1-20mum for the second time, and then cooling and drying to obtain composite fiber, wherein the temperature of the secondary immersing is lower than that of the first-time immersing. The graphene substances inside the fiber are evenly distributed, especially are evenly distributed in longitudinal direction; the density of graphene is increased, and the conductivity of the fiber is enhanced; and the firmness of the graphene substances is increased, and the washability of the fiber is improved.

The invention discloses a nano titanium dioxide/copper sulphide nano composite material. Titanium dioxide nanowires are prepared by a hydrothermal method and are used as a reaction substrate, a compound structure of copper sulphide nanosheets and titanium dioxide nanowires is prepared successfully by a secondary hydrothermal method under the conditions that the temperature is 100 DEG C and the reaction time is 10 hours, meanwhile, influence of hydrothermal temperature and hydrothermal time to photocatalytic performance of the composite structure is researched. Copper sulphide is prepared into a sheet structure, the compound quantity of the copper sulphide and the titanium dioxide nanowires is increased, the copper sulphide nanosheets and the titanium dioxide nanowires form a heterostructure, the light absorption range of titanium dioxide is expanded, and finally, the photocatalytic efficiency of the composite structure is improved. In the method, equipment is simple, process parameters are controllable, and the repeatability is high. The prepared nano composite material has important application in the field of photocatalysts.

The invention provides phase-change energy-storage concrete and a manufacturing method thereof. According to the manufacturing method, a hollow metal material device is used as a carrier of a phase-change energy-storage material, the periphery of the hollow metal material device is sealed, and a feeding hole is formed in the top of the hollow metal material device and only needs to be sealed, so that the packaging process is simple and convenient; furthermore, the metal material is hollow and high in compound quantity and thermal conductivity and can be used for preferably carrying out heat exchange, so that the energy-saving effect of the phase-change energy-storage material can be beneficially exerted, and relatively good energy storage and temperature regulation effects are achieved; a fastening device is arranged on the periphery of the metal material device, so that the surface roughness of the metal material device is enhanced, the interface adhesion between the phase-change energy-storage metal material device and hardened cement paste is improved, and the strength of the phase-change energy-storage concrete is improved. According to the phase-change energy-storage concrete and the manufacturing method, the application path of phase-change materials in the building energy-saving field is broadened, and technical support is provided for the popularization and the application of the phase-change energy-storage concrete.

The invention discloses a preparation method of a high-temperature-resistant composite coating. The composite coating employs cobalt as a base metal and nickel-covered chromium carbide particles as a disperse phase, and the chromium carbide particles of high content and uniform dispersion maintain high hardness of the composite coating at normal temperature and high temperature; composite coating liquid is dispersed by means of mechanical stirring and ultrasonic stirring to form uniform and stable composite coating liquid; electrodeposited base is a metal material, the surface of the base is pretreated, the metal Co and hard particles Cr3C2 are co-deposited into the composite coating by comprehensively controlling the process parameters such as electrodepositing temperature, current density, coating liquid flow and relative motion speed of cathode and anode. The problems that it is difficult to composite micro hard particles with high content in the composite electrodepositing process, the hard particles are unevenly distributed in the coating and the hard particles are in poor combination with the base metal Co are solved, and the prepared Co-Cr3C2 composite coating has high red hardness and excellent wear resistance.

The invention relates to a preparation method of a magnesium alloy with corrosion resistance in the surface and a functional protective layer on the surface, in particular to a method of increasing content of magnetic powder in a magnesium alloy micro-arc oxidation membrane, belongs to the technical field of surface processing. The method comprises the following steps: putting a magnesium alloy matrix in an electrolytic bath with a magnet arranged at the bottom firstly, adding the magnetic powder in electrolyte in the electrolytic bath, enabling the magnetic powder to uniformly cover the electrolyte, then adopting a micro-arc oxidation method to compound a ceramic membrane on the surface of the magnesium alloy, and forming a composite micro-arc oxidation ceramic membrane which is uniformly covered by the magnetic powder on the surface of the magnesium alloy, wherein the composite membrane layer is capable of reducing the number of micropores and cracks on the surface of the micro-arc oxidation membrane layer and improving corrosion resistance of the magnesium alloy. According to the method disclosed by the invention, the micro-arc oxidation membrane is enabled to have a magnetic function, by virtue of the magnet arranged at the bottom of the outer side of the electrolytic bath, the magnetic powder enters the oxidation membrane through a micro-arc oxidation fusion and discharge channel under the effect of magnetism, so that compound quantity of the magnetic powder in the micro-arc oxidation membrane is increased, the micro-arc oxidation membrane can more reflect the functions of the magnetic powder of electromagnetic wave absorption and shielding, and the application field of the micro-arc oxidation coating is widened.

The invention provides an absorbable bone graft material and a preparation method thereof, belonging to the field of preparation of ergonomic materials. The invention prepares BCB and BMP compositely to form a resorbable bone graft material by optimizing and adjusting the dosage of reagents and processing time in the preparation process. The BCB prepared by the present invention has no fat cells, bone cells, blood vessels and nerves in the central tube, protein components of the bone matrix, and Harvard tubes, and the composite bone graft material has no allergic reaction and is easily biodegradable, which overcomes the prior art Implant materials are prone to allergic reactions and are not easy to degrade, so they are suitable for large-scale clinical use.

When manufacturing molten steel from hot metal using a two base converter-type refining furnace and using one as a hot metal pretreatment refining furnace and the other as a hot metal decarburization refining furnace, the molten slag generated in the decarburization refining furnace is used while still hot as a refining agent in the pretreatment refining furnace without compromising the productivities of the two refining furnaces. A refining method for manufacturing molten steel from hot metal using a converter-type refining furnace with at least two bases and using one as a hot metal pretreatment refining furnace (14) and using the other as a decarburization refining furnace (3) for the hot metal (2) pretreated in the pretreatment refining furnace. After the molten steel (5) obtained by decarburization refining in the decarburization refining furnace has been tapped in a ladle (7), the slag (9) remaining inside the decarburization refining furnace is allowed to flow down, still in the molten state, from above stacked iron scraps to solidify at least a portion of the slag. Then in pretreatment of hot metal in the pretreatment refining furnace, the slag, at least a portion of which has been solidified, is used together with the iron scraps while still hot.

The invention discloses a preparation method of a bi-component epoxy resin adhesive. The bi-component epoxy resin adhesive is prepared from an adhesive A and an adhesive B, wherein the adhesive A is prepared from 89 parts of epoxy resin, 10 parts of a diluent and 1 part of an assistant, the adhesive B is prepared through the steps that 1, a semi-finished product curing agent is firstly produced and contains 16 parts of epoxy resin, 42 parts of a diluent and 42 parts of isophorone diamine; wherein 2, 71.5 parts of semi-finished product curing agent, 8.5 parts of epoxy resin, 10 parts of diluentand 10 parts of amine-terminated polyether are adopted, wherein the bi-component epoxy resin adhesive is prepared according to the ratio 1 to 1 of the adhesive A to the adhesive B.

A project of the invention provides composite resin particles and a manufacturing method thereof. Through the composite resin particles, a foamed particle molded article which has good internal fusion, compression rigidity and flexibility resistance, and which can be protected from being broken due to deformation is obtained. The foamed particle molded article has less styrene monomer left, has good foaming ability during foaming, and has excellent forming property during forming. The project is solved by providing composite resin particles (1) taking a composite resin which is made by impregnating a polystyrene monomer in an ethylene resin as a basic resin and a manufacturing method of the composite resin particles (1). The composite resin comprises 100-900 parts by mass of a structural unit deriving from a styrene monomer based on 100 parts by mass of the ethylene resin. The content of the styrene monomer existing as a monomer in the composite resin particles is 0-500 ppm by mass. The ratio WXY of a xylene insoluble component in the composite resin particles (1) is 0-40% by mass. During manufacturing of the composite resin particles, two polymerization initiators with different 10 h half-life period temperatures are adopted.