351results about How to "Short preparation process" patented technology

The invention discloses a lithium ion battery composite negative electrode material and a preparation method thereof. The surface of nanometer silicon is subjected to oxidization treatment to obtain nanometer silicon coated with silicon dioxide on the surface; the nanometer silicon coated with silicon dioxide on the surface is mixed with a lithium source uniformly to obtain a precursor; and the obtained precursor is placed into inert gas to be heated to obtain a nanometer silicon material coated with lithium silicate, and the product is subjected to washing, centrifugal separating and drying to obtain the lithium ion battery composite negative electrode material. By taking a uniform primary oxide layer on the surface of the nanometer silicon material as the substrate, an in-situ chemical reaction is performed to realize uniform coating of lithium silicate, so that stability between nanometer silicon and air or an electrolyte interface is improved effectively, thereby greatly improvingelectrochemical performance of the nanometer silicon material.

The invention provides a three-dimensional luminous light emitting diode (LED) lamp bulb module and a manufacturing method thereof. The LED lamp bulb module comprises a bendable metal-based circuit board and an LED arranged on the bendable metal-based circuit board, wherein the bendable metal-based circuit board is bent and shaped to form a lamp bulb type three-dimensional luminous structure, so that the LED lamp bulb module can irradiate in multiple directions in a three-dimensional space, and the luminous irradiation direction and the light efficiency of an LED lamp bulb are improved. The LED lamp bulb module is high in light efficiency and can irradiate in multiple directions in the three-dimensional space; and furthermore, the heat dissipation performance is high, the manufacturing flow is brief and short, the production efficiency is high, and the production cost is low.

Thin hot forming steel directly rolled through a thin slab and having tensile strength larger than or equal to 2100 MPa comprises components including, by weight percent, 0.41% to 0.50% of C, 0.45% to 0.65% of Si, 1.6% to 2.0% of Mn, not larger than 0.006% of P, not larger than 0.004% of S, 0.015% to 0.060% of Als, 0.50% to 0.65% of Cr, 0.004% to 0.005% of B, 0.046% to 0.060% of Ti or 0.046% to 0.060% of Nb or 0.046% to 0.060% of V or compounding of two or more of Ti, Nb and V, 0.36% to 0.60% of Mo, 0.21% to 0.35% of Ni and not larger than 0.004% of N. Production steps comprise molten iron desulfuration, electric furnace or converter smelting and refining, continuous casting, descaling treatment before the steel enters a soaking pit furnace, uniform heating, heating, high-pressure water descaling before the steel enters a rolling mill, rolling, cooling, reeling, austenitizing, mold punching molding and quenching. The strength is high, the manufacturing flow is short, the product surface quality is good, the thickness precision can be controlled within +/-0.03 mm, energy consumption can be greatly saved, and in addition, the steel and the method have the important significance in automobile light weight.

The invention discloses a method for industrially preparing a dimorphic hard alloy with both high strength and high tenacity, belonging to the technical field of hard alloys. The method comprises the following steps of: according to the content of Co in the dimorphic hard alloy, ball-milling and mixing WO2.9, Co3O4 and carbon black; coldly pressing into a billet block; preparing WC-Co composite powder in a vacuum furnace; ball-milling by taking absolute ethyl alcohol or hexane as a medium; drying to obtain the WC-Co composite powder; under the protection of argon, performing powder aggregation pre-treatment; raising the temperature to 650-950 DEG C at a speed of 5-8 DEG C per minute; keeping the temperature for 30-60 min; adding 30-80 ml of polyethylene glycol forming agent to each kilogram of powder; moulding and forming; and sintering the moulded and formed powder billet in vacuum or at low pressure. The WC-Co dimorphic hard alloy prepared by the invention has both high strength andexcellent breakage tenacity. The method is an integral industrialization preparation technology route.

This invention discloses one stationary focus digit lens head, which comprises positive optics first lens, negative optical second lens and positive optical third lens, wherein, the first lens is made of crylic acid; the second lens is made of polycarb; the third lens is made of non-crystal polyolefin transparent plastic and the invention uses each materials to balance the temperature changes.

The invention relates to a lightweight decorative acrylic sheet and its preparation method. The method comprises the steps of: dissolving waste organic glass powder by an acrylic acid monomer to obtain a slurry A, dissolving an ethylene-vinyl acetate copolymer by the acrylic acid monomer to obtain a slurry B, pouring the slurry B into the slurry A and stirring them uniformly to obtain a slurry C, then adding solid waste powder, a fly ash based paraffin composite phase change material, a pigment, magnesium hydroxide and dibenzoyl peroxide, stirring them evenly to obtain a hyperviscous slurry D; adding an organic solvent into the hyperviscous slurry D, conducting stirring, then placing the mixture into a steel die, performing cold press molding by a thermocompressor, then implementing heating at 70-80DEG C to carry out polymerization foaming for 2-4h; and conducting cooling and die release to obtain the lightweight decorative acrylic sheet. The method disclosed in the invention makes use of waste to prepare the lightweight decorative acrylic sheet and reduces environmental pollution. The obtained acrylic sheet has small density, high gloss, great hardness, good heat insulation and flame retardant effects and a high additional value, and can be widely applied in construction and decoration industries.

The invention discloses a process for preparing a kind of gallium nitride nanoline of high purity, which employs gallium oxide (Ga2O3) as raw material, alkaline air (NH3) as reacting gas, inert gas argon gas (Ar) as protective gas, silicon board as base carrier for product growing, absolute ethyl alcohol, acetone and deionized water as cleaning agent for the sicicon board, and employs no accelerating agent; the gallium nitride nanoline grows out under the temperature of 950 Deg C and on the silicon board through ammonification reaction; the preparing process is simplified by grinding, sifting the raw material, cleaning the silicon board and quartz material, controlling the air extraction, argon gas and alkaline air inputting by tubing high temperature furnace control device procedurally, which prevents the side product generating effectively and increases the product outcome, purity and quality and finally getting the gallium nitride nanoline of light yellow, solid and in linary shape; the product is characterized by the uniform shape, order arrangement, and stable optical, chemical and physical property; the invention is characterized by the short preparing process, high yield (reaching to 95%), high purity (reaching to 98.6%) and the high linary accuracy, with the diameter being 5-20 cm, the average length of the monoline 30-50 ª–m.

The invention relates to a preparation method of a catalytic cracking catalyst. According to the method, the NaY molecular sieve raw powder and halogen-containing gas are contact to perform gas phase ion exchange reaction; the sodium reduction and the ultra-stabilization of the NaY molecular sieve raw powder are completed in one step; the low-sodium high-silica-alumina-ratio molecular sieve is prepared. According to the method, different kinds of clay raw ores are compounded and are treated by high-concentration acid to obtain acid active composite clay; then, the low-sodium high-silica-alumina-ratio molecular sieve, the acid active composite clay, bonding agents, rare earth and decationized water are mixed and pulped; then, spraying granulation is performed; roasting and curing are performed; washing and drying are not needed; a finished product of the catalytic cracking catalyst is obtained. The catalytic cracking catalyst has the advantages that the olefin content in the gasoline can be obviously reduced; the light oil yield is improved; the preparation flow process of the catalyst is short; no ammonia and no nitrogen are discharged.

The invention relates to a method for preparing an SmCo/ Co nano-composite magnetic material through microwave calcium thermal reduction, and belongs to the field of magnetic materials. The method ischaracterized in that an SmCo-OH precursor is prepared by using an ultrasonic co-precipitation method, and then the SmCo/ Co nano-composite magnetic material is prepared by adopting the microwave calcium thermal reduction method, a hard magnetic phase is SmCo5 and Sm2co17, a soft magnetic phase is Co, and an exchange coupling effect exists between the hard magnetic phase and the soft magnetic phase. Compared with samples prepared without a microwave auxiliary under the same temperature, the magnetic performance is greatly improved. The method is simple in technology, and provides a new approach for preparing the nano-composite magnetic materials.

The invention provides thin thermoformed steel with tensile strength being not lower than 1700 MPa directly rolled by a sheet billet. The thin thermoformed steel with tensile strength being not lower than 1700 MPa directly rolled by the sheet billet comprises the following components, in percentage by weight, 0.26-0.30% of C, 0.31-0.35% of Si, 1.3-1.5% of Mn, not higher than 0.008% of P, not higher than 0.005% of S, 0.015-0.060% of Als, 0.31-0.35% of Cr, 0.031-0.035% of Ti or 0.031-0.035% of Nb or 0.031-0.035% of V or a mixture mixed by more than two of the three components in any proportion, 0.003-0.004% of B, 0.20-0.25% of Mo, 0.06-0.10% of Ni and not higher than 0.005% of N. The production method of the thin thermoformed steel comprises the steps of desulfurizing molten iron; smelting the molten iron by an electric furnace smelting or a rotating furnace and refining the molten iron; performing continuous casting; performing descaling treatment before putting the molten iron into a soaking pit furnace; performing soaking; performing heating; performing high pressure water descaling before putting the molten iron into a rolling mill; performing rolling; performing cooling; performing coiling; performing austenitizing; performing mould stamping forming; and performing quenching. The steel is high in strength, short in manufacture process and good in quality of product surface, the accuracy of thickness can be controlled within +/-0.03mm and the energy consumption can be greatly reduced; moreover, the steel has great significance to realize automobile lightweight.

The invention provides a polyethylene/rubber powder blend modified asphalt which is composed of a matrix asphalt and a polyethylene/rubber powder blended substance, wherein the polyethylene/rubber powder blended substance is composed of the following components in percentage by weight: 40-52% of polyethylene, 45-59% of rubber powder and 1-3% of crosslinking agent; and the weight ratio of the polyethylene/rubber powder blended substance to the matrix asphalt is (5-15):100. According to the polyethylene/rubber powder blend modified asphalt, the softening point is enhanced, the penetration degree is lowered, and the anti-rut property of the asphalt mixture is enhanced; the ductility is enhanced, and the low temperature ductility is improved; the aging resistance is improved; and the storage stability of the modified asphalt is enhanced, and the storage and transportation properties of the modified asphalt are improved. The polyethylene/rubber powder blend modified asphalt provides flexibility, fatigue resistance and cracking resistance for the asphalt pavement, thereby prolonging the service life of the pavement.

The invention discloses a short-flow preparation method for a Cu-Nb composite material. The method comprises the following steps of: drawing a Cu/Nb single core wire, straightening, and performing fixed-length cutting; acid-washing, dehydrating and drying an oxygen-free copper tube and the Cu/Nb single core wire; assembling the Cu/Nb single core wire into the oxygen-free copper tube to obtain a primary composite rod; drawing the primary composite rod, straightening, and performing fixed-length cutting to obtain a composite wire; acid-washing, dehydrating and drying the composite wire and another oxygen-free copper tube; assembling the composite wire into the oxygen-free copper tube to obtain a secondary composite rod; and repeatedly processing the secondary composite rod twice according to the processing method of the primary composite rod twice, and drawing until the secondary composite rod has a final size to obtain the Cu-Nb composite material. In the method, the process is simple, and the preparation period is short; and the prepared Cu-Nb composite material has the characteristics of high strength, high electric conductivity, steady performance and strong practicability, can meet the need of pulse magnets, and can be applied to the field of pulsed magnetic fields.

The invention provides a bicycle frame. The bicycle frame comprises hollow tubes and metal connecting pieces, wherein the metal connecting pieces comprise a five-way connecting piece, a claw connecting piece, a seat tube connecting piece and two bicycle head connecting pieces; a bicycle head is connected with an upper tube through one bicycle head connecting piece; the bicycle head is connected with a lower tube through one bicycle head connecting piece; the upper tube, a middle tube and an upper fork are connected together through the seat tube connecting piece; the lower tube, the middle tube and a lower fork are connected together through the five-way connecting piece; the upper fork and the lower fork are connected with each other through claws; the hollow tubes and the metal connecting pieces are glued into a frame body. A process for manufacturing the bicycle frame comprises the following steps: customizing the metal connecting pieces and the claws on a large scale, performing sand blasting and cleaning for later use; performing sand blasting on hollow tubes including the bicycle head, the upper tube, the middle tube, the lower tube, the upper fork and the lower fork, and cleaning for later use; gluing spare metal connecting pieces, claws and hollow tubes into a frame body; entering a baking procedure, and baking at the temperature of 140-160 DEG C for an hour for sizing; after baking, cooling to obtain the bicycle frame.

The invention belongs to the technical field of magnesium-lithium alloy materials, and particularly relates to a magnesium-lithium alloy foil and a preparation method and application thereof. A magnesium-lithium alloy cast ingot is coiled into an alloy coiled tape with the thickness of 1.5-3.5 mm through large-deformation hot extrusion cogging, then, multi-pass coiling type cooling rolling is conducted through a four-roller aluminum foil rolling mill provided with a tension roller set and a coiling machine, and thus the magnesium-lithium alloy foil is obtained, wherein the minimum thickness ofthe magnesium-lithium alloy foil can be rolled to 0.014 mm. The foil is short in preparation process, high in efficiency, small in residual stress, fine in grain, smooth, free of burrs and high in yield, and the yield can reach 80% or above. The magnesium-lithium alloy foil is used for preparing a vibrating diaphragm or a vibrating diaphragm dome base material, and has good shock absorption performance and high fidelity.

The present invention discloses a preparation method and device for high-concentration whole tailings slurry for mine filling. The preparation method comprises the processes such as dehydration, drainage, storage, mud making, etc applied to the low-concentration whole tailings. The processes are accomplished in the same sand silo according to the following steps: the low-concentration whole tailings discharged from mills are directly delivered into the sand silo to be dehydrated; the stationary primary water at the upper part of the sand silo is discharged from top to bottom layer by layer; when the tailing content in the discharge water reach the preset index ranging from 0.1 to 10g/l, the water discharge is stopped and the whole tailings in the sand silo are stored locally in the silo to be prepared for use; the comprehensive fluidization slurry making is applied to the whole tailings slurry in the sand silo through pressure gas so as to form the high-concentration slurry, the mass fraction of the tailings in which reaches 70 to 75 percent; then the high-concentration slurry is discharged into a mixing equipment to be mixed with the cementing material so as to prepare the binding backfill slurry. The present invention integrates the processes such as the dehydration, drainage, storage, slurry making, etc in a device to accomplish them, thus greatly shortening the preparation process, simplifying the technique and equipments and lowering the preparation energy consumption and cost.

The invention discloses a manufacturing method based on a photocuring 3D printing technology and used for a circuit board. The manufacturing method based on the photocuring 3D printing technology andused for the circuit board comprises the following steps: (1) designing a matrix model and a circuit pattern of the circuit board; (2) setting the printing parameters of the matrix model, and slicingthe matrix model; (3) blending functional photocuring resin; (4) printing a circuit board matrix through a photocuring 3D printing machine; (5) activating the surface of the matrix through laser to form an activated layer attached with a chemical plating catalyst; (6) carrying out chemical plating on the circuit board matrix; and (7) installing electronic components at the corresponding positionsof the circuit board matrix. The manufacturing method is high in machining degree of freedom, and capable of being applied to manufacturing for a three-dimensional circuit and manufacturing for a two-dimensional circuit board. The manufacturing method is capable of conveniently designing the circuit board and the circuit pattern according to the actual user need, and efficiently manufacturing thecircuit board, low in manufacturing cost, short in process flow, and green and environment-friendly.