2203results about How to "Short manufacturing time" patented technology

The present invention relates to a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the method comprising the step of heating a first portion of a support surface while depositing a layer of powder material on a second portion of the support surface.

Provided is a vacuum heat insulating material, using inorganic fibers as a core material, high in heat insulating performance (low in thermal conductivity), capable of maintaining the heat insulating performance for a long period, free of defects such as projections and depressions on a large scale on a surface thereof, short in manufacturing time and advantageous in terms of cost; and a manufacturing method therefor. A vacuum heat insulating material of the present invention is of a construction in which a core material 1 and a gas adsorbent 2 are housed in a bag 3 made from a gas barrier film and the interior thereof is reduced in internal pressure thereof and air-tightly sealed, wherein the core material 1 is a molded product obtained by coating a binder B on inorganic fibers having an average fiber diameter in the range of from 3 to 5 mum at a coating amount in the range of from 0.5 to 1.5 wt % relative to the fibers and heat pressing the inorganic fibers, or a laminate fabricated by stacking two or more sheets of the molded product.

Air conditioning units, methods of manufacturing, inventories, and buildings wherein certain heat exchanger modules are combined to make air conditioning units. In some embodiments, different combinations of different size modules are used to produce air conditioning units having different capacities wherein some identical modules are used in different size units. Various heat exchanger assemblies include spacers between modules, bends formed after modules are assembled into heat exchanger assemblies, attachment rails at the ends of the modules, inactive multi-tubes at the top and bottom of the modules, copper tubing between aluminum modules to facilitate field replacement of individual modules, name plates that attach between modules, attachment clips or spacers that snap attach to the modules, or a combination thereof, as examples.

The present invention discloses an electrostatic chuck for clamping work substrates, said chuck comprising three layers, where the dielectric constant of included non-conductive layers is selected to provide overall lower capacitance to the chuck. In the chuck assembly of the present invention, the top dielectric layer that is in contact with a substrate, such as, for example, a wafer, has a dielectric constant that is preferably greater than about 5, with a resistivity that is preferably greater than about 1E6 ohm.m, whereas the bottom dielectric layer has a dielectric constant that is preferably less than about 5 and a resistivity that is preferably greater than about 1E10 ohm.m. The intermediate layer preferably has a conductive layer where the resistivity is less than about 1 ohm.m. The electrostatic chuck may be bonded to heat sinks coated with anti-arc dielectrics. The heat sink can also be used as an RF electrode. The heat sink may have provisions for coolants and gas channels to feed a cooling gas to the backside of a wafer. The heat sink may have feed thrus to power the segmented electrodes in the electrostatic chuck. The passages for the feed thrus, gas feed holes and lift pins may be lined with ceramics or polymers to prevent any discharge to the heat sink. The electrostatic chuck is for clamping work substrates like Si, GaAs, SiO2, etc. used in semiconductor tools.

Method of manufacturing liquid crystal display element includes disposing adhesive on at least one of first and second substrates; disposing spacer particles on at least one substrate; supplying liquid crystal material onto at least one substrate; and fixing the substrates together with adhesive spacer particles and liquid crystal material therebetween. The substrates are fixed together by applying pressure and / or heat to the substrates from an end portion toward the other end portion thereof. An impulse applied to each spacer particle can be between 0.001 gf.sec and 0.1 gf.sec in substrate fixing step. Parameter X relating to heating in fixing step can satisfy 200<=X<=3000, where X=(T-20) / (V.D), T is temperature (°C), V is fixing speed (mm / sec) of substrates, and D is diameter of spacer particles (mm). The spacer particles can occupy an area ratio of 0.003 or more to unit area of the substrate.

The invention discloses detection equipment and a detection method. The detection equipment comprises a sampling device used for collecting a sample to be detected, a preprocessing sample injection device used for preprocessing the sample from the sampling device, and a sample analysis device used for separating the preprocessed sample from the preprocessing sample injection device and analyzing the separated sample. The detection equipment is miniaturized, can quickly and accurately detect gas-phase matters or particulate matters without unpacking, and is high in accuracy and suitable for security check of airports, ports, metro stations and the like.

A method for making a flexographic printing master includes the steps of providing a flexographic printing support; providing an inkjet printing device; applying a mesa relief on the flexographic printing support with the inkjet printing device; and applying an image relief with the inkjet printing device on the mesa relief. A method for making a flexographic printing master includes the imaging apparatus.

The invention relates to a microwave curing process for ceramic material gel casting, which comprises the following steps: firstly, dissolving organic monomer and crosslinker in sequence in the solvent, adding a dispersant and obtaining pre-prepared liquid; adjusting the pH value of the pre-prepared liquid to be 7-11, adding ceramic powder to the pre-prepared liquid, stirring the mixture stronglyand mechanically for 1h and obtaining even slurry; adding an initiating agent and a catalytic agent to the slurry and mixing evenly; soon afterward, removing the gas in the slurry by vacuum; casting the slurry into a module; placing the module packed with the slurry in a microwave oven for a curing process, and obtaining a gel casting ceramic body; and drying the ceramic body, and then sintering at the temperature of 1200 DEG C-2200 DEG C for 1-6h, and finally obtaining a ceramic product. Compared with the conventional gel casting curing method, the microwave curing process has the advantagesthat the process has fast heating speed and uniform temperature field, reduces the activation energy of reaction, accelerates the reaction rate, causes the polymerization reaction to be finished rapidly and achieves the purpose of high speed and high quality moulding of materials.

The present invention relates to one kind of high molecular weight polybutanediol succinate and its preparation process, and features that bihydroxy terminated butanediol succinate, especially low molecular weight bihydroxy terminated butanediol succinate, as the pre-polymer and diisocyanate as the chain extender in 0.1-13 % are molten and reacted to prepare polybutanediol succinate with low cost, great molecular weight, narrow molecular weight distribution and excellent mechanical performance. The polybutanediol succinate has number average molecular weight greater than 5.5x10<4>, molecular weight distribution of 1.4-1.8, tensile strength of 39-58 MPa, and elongation at break of 300-700 %.

The invention relates to novel polymer-based microstructures, with outstanding shape accuracy and cost-effective processing. The novel polymers are based on hyperbranched macromolecules and enable remarkable property combination such as reduced shrinkage and associated low stress, high shape fidelity and high aspect ratio in patterned microstructures, with additional benefit of fast and low-cost production methods. The invention also relates to methods to produce these microstructures. The polymer-based microstructures are relevant for, but not limited to micro- and nano- technologies applications, including lab-on-a-chip devices, opto-electronic and micro- electromechanical devices, optical detection methods, in fields of use as diverse as automotive, aerospace, information technologies, medical and biotechnologies, and energy systems.

The invention discloses a method for improving the flavor and the texture of plant enzyme food by utilizing fermentation of compound strains. The method is characterized in that strains with good permeability resistance, aroma strains, plant-source preponderant strains and strains for optimizing the texture of a product are screened by sugaring digestion, fermentation of the compound strains, after-ripening, clarifying and membrane filtration treatment, reasonable and scientific combination is carried out on the strains, the preparation time of the plant enzyme food is effectively shortened by controlling the matching and the used amount of the strains, the prepared plant enzyme food is coordinated in flavor, stable in texture, safe and sanitary, and uniform in color, has strong composite fruit flavor and fermenting mellow flavor, is viscous in organization and mellow in taste, has no stimulation in eating, is coordinated in sweetness and sourness, smooth in swallowing, and sweet and lasting in residual taste. The method disclosed by the invention has the advantages that the process is simple, the fermented product can be stored at normal temperature, and the quality is still stable after 6 months, so that the method is suitable for large-scale production, and has a good market prospect.

The invention relates to a method for preparing front electrodes of solar cells, which comprises the following steps: firstly preparing discontinuous dot electrodes; and then connecting the dot electrodes by electroplating technology to realize that the electrodes collect and transport current but dielectric films still exist between the dot electrodes to have the function of passivation. The discontinuous dot electrodes are prepared by photoetching, evaporation and dissection methods, or firstly printed by silkprint, stencil printing or ink jet printing and then prepared by a sintering method. The electroplating is photoinductive electroplating or chemical plating. The dot electrodes effectively reduce surface recombination; and the adopted electroplating technology not only simply and accurately realizes the connection of the dot electrodes, but also effectively reduces the width of grid lines, namely reduces electrode shading areas and further reduces the surface recombination so as to contribute to improving battery efficiency.

The invention discloses a method for quickly preparing hydrophobic silicon dioxide aerogel at low cost. The method comprises the following steps of (S1) mixing a silicon source, water and a surfactant evenly to obtain a precursor solution, adding an acid catalyst to the precursor solution, adjusting the pH value to be 3-4, and then hydrolyzing to obtain sol; and (S2) dropwise adding an alkali catalyst to the sol obtained in the step (S1), continuously stirring in the dropwise adding process, adjusting the pH value to be 6-7, and carrying out gel standing, ageing and ambient pressure drying to obtain the hydrophobic silicon dioxide aerogel. The method is low in cost, free of solvent exchange, short in production cycle and free of environmental pollution; and the prepared hydrophobic silicon dioxide aerogel has good heat preservation and heat insulation properties, hydrophobicity and flexibility.

The invention belongs to the field of nano biomaterials and relates to a calcium phosphate nano-structure hollow microsphere and a preparation method thereof. The calcium phosphate nano-structure hollow microsphere is prepared by the following steps: dissolving biocompatible polymer, soluble calcium salt and soluble phosphate in water to form a uniform precursor solution, and carrying out the microwave heating hydrothermal treatment on the solution. The prepared calcium phosphate nano-structure hollow microsphere comprises various chemical components of calcium phosphate and hydroxyapatite (Ca10(PO4)6(OH)2); a shell of the hollow microsphere is a porous structure formed by the assembly of nano calcium phosphate pieces with the thickness of 10-50nm; and the diameter of the hollow microsphere is 1-10 micro meters. The invention has the advantages of fast preparation, simple process and low cost, and the prepared nano-structure hollow microsphere has the advantages of favorable biocompatibility and the like, thereby having good application prospects in the field of biomedicine.

The invention discloses a preparation method of yak bone collagen peptide. The method is characterized by comprising the following technological processes: pretreatment of raw materials, gelatin extraction, separation of a collagen extracting solution, composite enzymatic hydrolysis, enzyme deactivation and sterilization, separation of a peptide solution, decoloring and deodorizing, concentrating and drying. The compound enzyme for composite enzymatic hydrolysis is prepared from protease, amylase, pectinase, cellulose and xylanase. The method has the advantages that the gelatin extraction process is simple, oil and gelatin are completely separated by using flow of a mixed solution, the enzymatic hydrolysis temperature is 48-52 DEG C, the time is 4-6 hours, the temperature is reduced in comparison with common enzymatic hydrolysis temperature, the preparation time of the product is shortened, and the method comprises enzyme deactivation and sterilization procedures, and decoloring and deodorizing procedures, so that the product is good in taste, and applicable to preparation of the yak bone collagen peptide.

The invention relates to a loaded type nickel-based catalyst used for slurry bed methanation, and a preparation method and an application thereof. The loaded type nickel-based catalyst is composed of, by weight, 10-40 wt% of NiO, 56-90 wt% of a carrier and 0-4 wt% of an auxiliary agent. The loaded type nickel-based catalyst is prepared by the steps of preparing a soluble salt solution of 0.5-1.3 g / mL nicdel nitrate and the auxiliary agent; adding a catalyst carrier and a soluble organic fuel to the salt solution in sequence; impregnating for 6-24 h while stirring; heating the solution for concentration in a water bath with a temperature of 60-90 DEG C after finishing the impregnation, or heating for igniting the solution at a temperature of 300-700 DEG C directly; collecting the combustion residue powder, grinding the powder and granulating, and reducing for 2-6 h with a reducing gas on a fixed bed at a temperature of 500-700 DEG C. The loaded type nickel-based catalyst has a slurry bed methanation process, and has the advantages of good and stable catalytic performance, and can be used for large-scale industrialization.

A system and method that improves and automates the measurement of power generated by an electrosurgical generator. An active load device is coupled to the generator output and is configured to simulate the change in tissue characteristics, such as an impedance change, that occurs when such tissue undergoes electrosurgical treatment. The active load faithfully simulates the change in tissue characteristics caused by a particular mode of electrosurgical energy delivery, such as without limitation, changes caused in response to a cutting mode, a coagulation mode, a blending mode, a sealing mode, and the like. Tests are conducted in accordance with test profiles containing target impedance and power values of the test scenario. A plurality of profiles may be stored for testing under various simulated operating conditions.

The invention discloses a method for preparing graphene through a liquid-phase stripping method. The preparation method comprises the following steps: S1, performing expanding treatment on a graphite raw material through an expanding method; S2, dispersing the expanded graphite into an aqueous solution containing a surfactant to obtain a mixture, performing ultrasonic treatment on the mixture, centrifuging the mixture, and drying the mixture for later use; S3, adding the dried graphite into an organic solvent, a mixed solution of an organic solvent and a surfactant or a mixed solution of an organic solvent and substances with surface energy similar to that of the graphene, performing ultrasonic treatment and suction filtration, drying, and repeating the step S3 for 1-10 times, thereby obtaining graphene. Compared with the prior art, the method disclosed by the invention can be used for greatly shortening the ultrasonic treatment time, improving the stripping efficiency and obtaining high-quality graphene under low-power ultrasonic treatment.

The invention provides a preparation method of a high temperature resistant silicon dioxide nanometer fiber filtering membrane. The preparation method is characterized by comprising the specific steps of: adding organosilicone, water, ethanol and inorganic acid at room temperature into a stirring kettle so as to obtain a mixed solution, and adding inorganic salt; stirring the mixed solution so as to obtain a precursor colloidal sol; inputting the precursor colloidal sol in a spinning head of electrostatic spinning equipment, simultaneously wherein the spinning head is connected with a high-voltage power supply so as to carry out electrostatic spinning to obtain the nanometer fibrous membrane; placing the nanometer fibrous membrane into a vacuum drying chamber to dry, then placing into a box resistance furnace to carry out warming for calcination, namely obtaining the high temperature resistant silicon dioxide nanometer fiber filtering membrane. The preparation method provided by the invention has the advantages that the preparation process is simple, the cost is cheap, the fiber diameter of the acquired high temperature resistant silicon dioxide nanometer fiber filtering membrane is small, the fire resisting quality is good, and the high temperature resistant silicon dioxide nanometer fiber filtering membrane has good structural stability; and the filter efficiency of high temperature smoke dust particles the sizes of which are more than 0.24 mum achieves 99.9% at 1500 DEG C, and the high temperature resistant silicon dioxide nanometer fiber filtering membrane has extensive application prospects in the fields such as high-temperature insulation, individual protection, and aerospace.

The invention opened a preparing method of the cellulose fibre spinning stock solution. The solvent is the intermixture of the [BMIM]Cl and the [BMIM]BF4. The cellulose dissolves in the solvent after breaking up to get the uniform and transparent liquid. So it can save the energy, decrease the pollution and improve the quality of the stock solution.

The invention discloses a preparation method for a polycarboxylic acid series comb-shaped surface active agent, which comprises the following steps of: mixing two comonomers, an initiator, a chain transfer agent and a solvent under the protection of nitrogen, heating to a reacting temperature for polymerization to obtain an intermediate polymer; adding a graft compound, a catalytic agent and a dissolvant into the intermediate polymer, carrying out graft reaction at graft temperature, decompressing and removing part of solvent in a reaction system after reaction, and then precipitating the product with a precipitator; dissolving filter cakes with the solvent; precipitating the dissolved solution with the precipitator again, dissolving repeatedly, precipitating again and then refining, and finally decompressing and drying the product to the constant weight. The preparation method has the advantages of reasonable technology, simple operation, low preparation cost, mild reacting conditions and good product quality.

The invention relates to a preparation method of a particle-reinforced magnesium-based composite material and aims at solving the problem that the particle-reinforced magnesium-based composite material prepared by an existing method is low in strength and poor in plasticity, particles are unevenly dispersed in magnesium alloy and the preparation time is long. The preparation method comprises the following steps of 1 preparing a magnesium alloy semi-solid melt; 2 preparing a particle-magnesium alloy melt; 3 enabling the particle-magnesium alloy melt to be solidified and formed. The preparation method has the advantages that the tensile strength and yield strength of the obtained particle-reinforced magnesium-based composite material are improved by 50%-150%, the highest elongation rate reaches to 8%; the particles are evenly dispersed in the magnesium alloy, the pore defect in the magnesium-based composite material is overcome; the process is simple, the preparation time is shortened by 15%-30%. The particle-reinforced magnesium-based composite material can be obtained by using the preparation method.

Crater-like intricate indents formed by melting and scattering of a metal surface are provided by irradiating with high density energy such as a laser beam or an electron beam the surface of the metal member. By using the irradiation condition that the crater-like indents have partially overlapped regions, gangue-like prominent portions formed by melting and scattering of the metal surface, a spherical metal splash formed at the top end of the prominent portions, and a roughed surface shape where particulate sputtering formed upon fabrication is secured. Thus, the molded resin intrudes into the constricted space formed by surface roughening to provide an anchoring effect against volume change of the resin in the direction where the resin is peeled from the surface of the metal member.

The invention discloses a trichoderma spore powder as well as a preparation method and application thereof. The trichoderma spore powder contains trichoderma spore powder and a drying aid, wherein the trichoderma spore powder is the spore powder of Trichoderma sperellum T1 which is preserved in the general microorganism center of CCCCM (China Committee for Culture Collection of Microorganisms) and has the preservation number of CGMCC NO: 3531 and a rDNA ITS region segment sequence shown in SEQ ID NO:1; the drying aid is one or more of beta-cyclodextrin, potato starch and soluble starch. The trichoderma spore powder has an effective prevention and control effect on banana vasicular wilt, and has a remarkable antagonism effect on various pathogenic funguses, especially on soil-borne funguses. The preparation time is saved with the preparation method of the trichoderma spore powder, which can be used for preparing the trichoderma spore powder which has high density, high germination rateand high drying efficiency and is easy to store, transport and use.

The invention relates to a preparation method of polystyrene / gold composite microspheres, which comprises the following steps: modifying polystyrene microspheres with a silane coupling agent, mixing with a chloroauric acid solution, and heating to carry out ionic selfassembly, wherein gold ions are fixed to the surface of the polystyrene microspheres through gold-nitrogen bonds; and after the solution is boiling, adding trisodium citrate to reduce the gold ions adsorbed onto the amino group in situ, thereby generating the core-shell structure in which a gold nanoparticle is coated on each polystyrene microsphere. The size of the gold particles and the coverage percentage of the gold particles on the polystyrene microspheres are controllable to some extent.

The invention provides a high-ductility cement-based composite material. The high-ductility cement-based composite material is prepared with the following raw materials by weight: 71.8-85 parts of base material, 12.9-25.2 parts of water, 0.89-2.67 parts of fiber and 0.11-1.23 parts of admixture, wherein the fiber is composed of two or more of polypropylene fiber, polyvinyl alcohol fiber, polyethylene fiber, aromatic polyamide fiber and glass fiber; the weight ratio between the polypropylene fiber, the polyvinyl alcohol fiber, the polyethylene fiber, the aromatic polyamide fiber and the glass fiber, and the total fiber is 15-89.5%, 0-68.4%, 0-75.6%, 0-73.5%, and 0-56.4% respectively. The high-ductility cement based composite material is high in compressive strength and low in preparation cost; the compressive strength can be up to higher than 50.5 MPa; the preparation cost is reduced to 15-50% of that of the prior art. The invention further provides a preparation method of the high-ductility cement based composite material.

The invention relates to a method for preparing activated carbon by catalyzing and activating microorganism white-rot fungi or enzymes, which belongs to the technical field of activated carbon preparation. According to the preparation method, tobacco solid waste is used as a raw material, and a product is obtained through simple processes of pretreating the raw material, preparing a tobacco activated base by microorganism white-rot fungi culture or enzyme catalysis and activation and preparing the activated carbon. The method has the characteristics of wide raw material source, low waste utilization cost, low energy consumption in the production process, no secondary pollution, benefit to environmental protection, good adsorptive property and wide application of the activated carbon production, and the like. The method can be widely applied to preparing the activated carbon by taking the tobacco solid waste as a raw material, and the activated carbon prepared by adopting the method provided by the invention can be widely applied to the fields of waste water treatment, removal of SO2 from smoke, adsorption of odors in food fresh keeping, and the like.

The invention relates to an oxygen reduction catalyst for a fuel cell, and a preparation method thereof. The oxygen reduction catalyst comprises a transition metal oxide and graphene, wherein a ratio of the transition metal oxide to the graphene is 1-100:1-50, the particle size of the transition metal oxide loaded on the graphene is 0.1-600 nm. The catalyst and the preparation method of the present invention have the following advantages that: with the method, the preparation time is shortened, the cost is low, the reaction conditions are mild, the process is safe, and the catalyst has advantages of good methanol resistance and good carbon monoxide resistance.