117results about How to "Uniform structure distribution" patented technology

The invention relates to superfine iron-copper alloy powder and a preparation method thereof. The superfine iron-copper alloy powder is prepared by using ferric oxalate powder at an industrial raw material stage and cupric oxide powder at an industrial raw material stage as raw materials through high-energy ball milling and hydrogen reduction and has a fisher particle size smaller than 1.0 microns and a oxygen content smaller than or equal to 0.5 percent by weight. The invention has the advantages that grains of the superfine iron-copper alloy powder are thinner, the physical and chemical properties are superior, and the manufacture cost is low.

The invention discloses a preparation method of a self-hydrophobic silicon dioxide aerogel composite material. The method comprises the following steps of (1) sol preparation: preparing the sol from raw materials comprising silicon source precursors, hydrophobic modifiers, solvents, water and hydrolysis catalysts; (2) alcogel preparation by compounding sol and substrates; (3) aging of alcogel; (4)silicon dioxide aerogel composite material preparation by supercritical CO2 drying of aged alcogel; (5) aerogel composite material finished product correlation performance detection. The prepared self-hydrophobic silicon dioxide aerogel composite material has the excellent heat insulation performance, waterproof performance, fireproof and mechanical performance; the construction is convenient. The preparation method avoids a single hydrophobic modification step; the technical production steps are simplified; the operation is simple and easy; the process is controllable; the production continuity is realized.

The invention discloses a polycarboxylate dispersing agent. The polycarboxylate dispersing agent comprises, by mass, 30-100 parts of monomers A, 30-100 parts of monomers B, 5-20 parts of initiators, 1-15 parts of chain transfer agents, 200 parts of deionized water and 6-15 parts of pH regulators. Linear polycarboxylate of the polycarboxylate dispersing agent is poisonless, and harmless to the human body. No waste water or waste residue is discharged during production of the polycarboxylate, discharged gases do not contain toxic components, and a green chemical production principle is followed.

The invention discloses composite material of microfibrillar coating activated carbon or activated carbon catalysator and preparation method. The material includes micrometer ceramics or metal micro-fiber and micrometer activated carbon or activated carbon catalysator particles, the activated carbon or activated carbon catalysator particles are coated in the three-dimensional network structure uniformly. It mixes the adhesive agent, micro-fiber, activated carbon or activated carbon catalysator particle with the mass ratio of 1:1-3.5:7-10 and right amount of water to forming uniform slurry after high-speed agitation; then prepares precursor using wet paper-making art; the precursor is adglutinated and formed under 750-1400DEG C after dried fully. The material preparation art is simple and low in cost, the void ratio is high and can be adjusted within a wide range, mechanical strength is high, flexibility is good and molding is easy; it can replaces traditional activated carbon or activated carbon catalysator fixed-bed layer, enhance mass and heat transfer, reduce pressure drop and improve contact efficiency, its application prospects are bright.

The invention discloses a paper sintering metal fiber load molecular sieve membrane and a preparation method thereof. The paper sintering metal fiber load molecular sieve membrane has the thickness of 0.1-1.5mu m. The preparation method comprises the following steps of: pulping size prepared from an adhesive and a metal fiber at a mass ratio of (1-1):(1-3), drying, then sintering in a nitrogen or hydrogen atmosphere, preprocessing through an anode oxidization process, and synthesizing the molecular sieve membrane with an adjustable thickness on the surface of the metal fiber by adopting a secondary growth process. The preparation method is simple; the sintering metal fiber is of a three-dimensional net structure, and has the characteristics of high porosity, high mechanical strength, good flexibility and convenience for formation; the porosity can be regulated within a large range; and the synthesized molecular sieve membrane is thin and is good in continuity.

The invention discloses a preparation method of anti-high-temperature-oxidation crystal whisker modified Ti(C,N) base composite metal ceramic, and belongs to the field of high-speed cutter materials. The preparation method of the crystal whisker modified Ti(C,N) base composite metal ceramic comprises the steps of raw material matching, ball milling and material mixing, material drying, vacuum hot pressed sintering and the like. The crystal whisker modified Ti(C,N) base composite metal ceramic comprises, by weight, 45-60% of Ti(C<0.5>N<0.5>), 10-25% f Al2O3 crystal whisker or ZrO2 crystal whisker, 8-15% of WC, 5-10% of Co, 5-10% of Mo2C and 5-10% of Ni. The Ti(C,N) base composite metal ceramic obtained through the preparation method has excellent compactness, high-strength toughness and high temperature oxidation resistance, and can serve as a (semi) precision-machined cutter material of a special steel material.

The invention relates to a conductive grapheme and organic silicon resin composite material, and belongs to the technical field of conductive materials. The conductive grapheme and organic silicon resin composite material provided by the invention is prepared by adding grapheme and methylphenyl silicon resin into a ball mill to grind and mixing to uniformity, wherein the weight ratio of the grapheme to the methylphenyl silicon resin is 1:20-500. According to the conductive grapheme and organic silicon resin composite material, the organic silicon resin becomes conductive from insulating, so that the composite material has good conductive performance of the grapheme and excellent weather fastness and heat resistance of the organic silicon resin; furthermore, the composite material adopts the specific organic silicon resin, namely the methylphenyl silicon resin, and a specific ratio, thus further improving the weather fastness and the heat resistance, being easy to solidify and capable of being used for preparing conductive paint, conductive film and other conductive materials. In addition, the conductive grapheme and organic silicon resin composite material is simple in preparation method and applicable to industrial production, and effectively saves energy consumption and reduces cost.

The invention relates to a nickel-based composite anode material of a solid oxide fuel cell and an application thereof. The composition of the composite anode material can be expressed by Ni1-x-yMgxAlyO1 plus 0.5y, wherein x varies from 0.01 to 0.2 and y ranges from 0.001 to 0.2. The composite anode material is compounded with an electrolyte material to prepare an anode, and the weight percentage of magnesium oxide and aluminium oxide modified nickel-based composite oxide material is 30-70 percent. During practical application, the composite anode is put into use after reduction, the reduced anode contains the electrolyte material, metal micron-nickel and nano particles, magnesium oxide, aluminium oxide and a composite oxide formed by magnesium oxide, aluminium oxide and nickel oxide. The novel composite anode can be used for flat-plate-type, tubular, honeycomb-type and oblate-tube-type solid oxide fuel cells.

The invention relates to the field of catalysts and discloses a propane dehydrogenation catalyst, a preparation method thereof and a method using propane dehydrogenation to prepare propylene. The propane dehydrogenation catalyst comprises a carrier and a Pt component, a Sn component and a Na component which are loaded onto the carrier, wherein the carrier is spherical mesoporous silica, the spherical mesoporous silica has a cubic core structure, the compressive strength of the spherical mesoporous silica is 12-16MPa, the average particle size of the spherical mesoporous silica is 2-10 micrometers, the specific surface area of the spherical mesoporous silica is 700-900m<2>/g, the pore volume of the spherical mesoporous silica is 0.5-1mL/g, and the most probable pore diameter of the spherical mesoporous silica is 1-5 nanometers. When the propane dehydrogenation catalyst which is high in compressive strength is used in the reaction of propylene preparation using propane dehydrogenation, the propane dehydrogenation catalyst is good in catalytic performance, high in propane conversion rate, high in propylene selectivity and good in stability.

The invention relates to a preparation method of a water-soluble phenolic resin applied to preparation of a copper-clad foil laminated board adhesive. The preparation method is characterized in that phenol and formaldehyde are used as main raw materials, barium hydroxide is used as a catalyst, and the water-soluble phenolic resin is generated through synthesis reaction, wherein the reaction temperature is 90 DEG C-98 DEG C, the reaction time is 45-70 minutes, and normal pressure is maintained when in reaction. The feeding mass parts of various components of the water-soluble phenolic resin are as follows: 100 parts of the phenol, 100 parts of the formaldehyde and 2-4 parts of the barium hydroxide. By using the preparation method, the adhesive property and heat-resistant property between a copper foil and a papery substrate can be improved.

The invention discloses a device and method for preparing amorphous carbon and nitrogen thin films on the surface of silicon. The device is a pulse cathode electric arc device assisted by an ion source. The preparation device includes the following steps that a silicon substrate which is chemically cleaned in advance is dried and placed on a rotating sample table; vacuumization is performed, argon gas is led into a vacuum chamber, and the surface of the silicon substrate is physically cleaned through an ion sputtering source; and high-purity graphite serves as a cathode target material of a pulse electric arc, the pulse discharging frequency is adjusted, nitrogen gas is led at the same time, the ion source is opened, and the atomization and ionization nitrogen-doped amorphous carbon and nitrogen thin films are prepared. By means of the device and method, the content of carbon/nitrogen atoms and carbon-nitrogen bonds/carbon-carbon bonds in the amorphous carbon and nitrogen thin films is adjustable, and the carbon and nitrogen bonding types and the graphite-like nitrogen/ pyridine-like nitrogen structures are controllable.

The invention concretely relates to a TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material preparation method which comprises the following steps of compounding reaction raw materials, wherein the reaction raw materials are prepared from the components in percentage: 50 to 65 percent of Ti (C, N), 15 to 30 percent of TiB2 whisker, 2 to 10 percent of WC,2 to 8 percent of Mo2C, 2 to 8 percent of TaC, 2 to 8 percent of NbC, 3 to 5 percent of Co, and 3 to 5 percent of Ni; and after compounding, compositely mixing the raw materials, pelletizing, drying,carrying out cold isostatic pressing molding, carrying out sectional type atmosphere hot pressing, rapidly cooling for reducing temperature, and sintering to obtain a TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material. The Ti (C, N)-based composite metal ceramic prepared through the invention has a favorable combination property, and particularly hashigh high-temperature hardness and toughness during high-speed cutting, so that the TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material is good for prolonging the service life of a cutter and can be used as a cutting tool material for high-speed cutting (semi) finish machining.

The invention relates to a poly(p-phenylenebenzobisoxazole) porous membrane, a preparation method and an application thereof, and belongs to the technical field of lithium ion secondary batteries, wherein the membrane is composed of poly(phenylenebenzobisoxazole) (POB) fiber, the thickness of the membrane is 3-40 microns; pores on the surface and inside the membrane are distributed uniformly, the pore diameter is adjustable, the membrane has good air permeability, excellent resistance to high temperature and high tensile strength. The preparation method of the membrane is that a POB solution is subjected to vacuum defoamation treatment, solvent exchange after curtain coating and film forming, and freeze drying to obtain the membrane. The POB membrane provided by the invention can be used as the barrier film of a lithium ion secondary battery and has good performance.

The invention relates to a novel preparation method of an edge functionalized graphene catalyst. Mixed ball milling is carried out on graphite powder and conductive polymer monomer (such as pyrrole) at room temperature and normal pressure without adding any other chemical reagents, and ball milling is carried out continuously to obtain edge functionalized graphene nanosheet of the conductive polymer at the ball milling speed 25% lower than that reported previously and with ball milling time saved by 50%. The product is uniform in sheet, has the thickness being about 1.5 nanometers and the yield being 90% above, batch production of graphene can be effectively realized, the commercial cost is lowered, and the application universalness of graphene is popularized. The prepared product contains 6% of nitrogen atoms, provides effective active site for electrochemistry oxygen reduction, and can be directly used as an oxygen reduction catalyst with high performance. In the overall production process, toxic chemical reagent or high temperature and high pressure is not used. The preparation method is high in safety and environmental protection, simple in technological process and easy to operate.

The invention discloses a lithium battery separator and a preparation method and application thereof. Cellulose and inorganic matter particles are contained in raw materials of the separator, wherein the inorganic matter particles are selected from more than one of silicon dioxide, aluminum oxide, boehmite, titanium oxide, zirconium oxide, tin oxide, magnesium oxide and silicon carbide.

The invention relates to a diketene preparation device and a diketene preparation method. The diketene preparation device comprises an acetic acid evaporator, a mixer, a cracking furnace, a quenching condenser and an absorption tower. The outlets of the acetic acid evaporator and the mixer are connected with the cracking furnace; the cracking furnace is then connected with the multi-level quenching condenser; the quenching condenser is then connected with the absorption tower; one branch of the absorption tower is connected with a polymerization tank, and the other branch of the absorption tower is connected with a water absorption tower; and the outlet of the third-level quenching condenser is connected with the quenching condenser behind through a liquid ring pump. The diketene preparation device and diketene preparation method provided by the invention have the beneficial effects that when the cracked gas is pressurized, the impurities such as acetic acid, water and acetic anhydride in the cracked gas can be condensed out more sufficiently, and thus the quality of the cracked gas before entering the absorption tower is improved while the freezing level is lowered; and compared with the traditional technology in which the energy consumption accounts for 45% of the total cost of diketene, the device and method provided by the invention have the advantage that the energy consumption only accounts for 25% of the total cost of diketene through improvement.

The invention discloses an inorganic solid electrolyte-cellulose composite diaphragm and a preparation method thereof. The preparation method comprises the steps of S10, adding cellulose raw materialsinto deionized water to be immersed, and then performing grinding in a pulping machine to obtain a cellulose pulp solution with a micro-fiber structure; S20, adding an inorganic solid electrolyte into deionized water to prepare into a suspension liquid, then adding a wet strength agent and the cellulose pulp solution to be mixed uniformly; S30, performing papermaking and film forming on the cellulose pulp solution comprising the solid electrolyte by a papermaking process, namely, obtaining a wet cellulose electrolyte composite diaphragm; and S40, performing drying on the wet composite diaphragm in a drying oven to obtain the needed cellulose-solid electrolyte composite diaphragm. The prepared composite diaphragm is uniform in hole structural distribution, convenient to prepare, suitable for batch production, and high in heat resistance, high in wettability, high in ionic conductivity, high in breakdown resistance, and suitable for a lithium ion battery diaphragm; and meanwhile, the diaphragm is compounded with the inorganic solid electrolyte, so that an effect of the electrolyte can be played, and extra addition of an electrolyte solution is not needed.

The invention relates to the technical field of non-woven fabrics, and discloses a finishing process of moisture-absorbing and sweat-wicking polyester non-woven fabrics. The finishing process of the moisture-absorbing and sweat-wicking polyester non-woven fabrics comprises the following steps that (1) the polyester non-woven fabrics are placed in an ethanol solution for ultrasonic vibration cleaning; (2) a vinyl acetate-maleic anhydride copolymer is added to absolute ethanol, the mixture is heated and stirred to be dissolved to obtain a vinyl acetate-maleic anhydride copolymer solution, a sodium hydroxide ethanol solution is added dropwise to the vinyl acetate-maleic anhydride copolymer solution, the mixture is stirred and subjected to alcoholysis to obtain an alcoholysis solution, modified zeolite is added to the alcoholysis solution, and the mixture is uniformly dispersed by ultrasonic oscillation to obtain a hydrophilic finishing agent; (3) the polyester non-woven fabrics are immersed in the hydrophilic finishing agent, a glutaraldehyde crosslinking agent is added dropwise to carry out the crosslinking reaction, and nascent moisture-absorbing and sweat-wicking polyester non-woven fabrics are obtained; (4) the nascent moisture-absorbing and sweat-wicking polyester non-woven fabrics are arranged in an oven for heat drying treatment to obtain the moisture-absorbing and sweat-wicking polyester non-woven fabrics. The polyester non-woven fabrics have excellent moisture-absorbing and sweat-wicking performance and are comfortable to wear.

The invention discloses a manufacturing method of a cable connector assembly. The manufacturing method is characterized by comprising the following steps: step S1: a plug connector is provided, wherein the plug connector comprises an insulating body, multiple terminals accommodated in the insulating body and a shielding case surrounding the insulating body, and the shielding case is provided witha base and a butting part extending from the base to be inserted into a pair of connectors and electrically connects a cable and the terminals; step S2, a shell covers the base and the cable and fixesthe shell and the shielding case; step S3, injection molding of an inner mold is performed in the shell and the cable is fixed; step S4, the upper surface of the shell is located and injection molding of a first outer mold is performed to cover the lower surface of the shell and the lower surface of the inner mold; and step S5: the lower surface of the first outer mold is located and injection molding of a second outer mold is performed to cover the upper surface of the shell and the upper surface of the first outer mold so that the second outer mold and the first outer mold are joined and the structure of the first outer mold and the second outer mold is uniform.