169results about How to "Ease of industrial preparation" patented technology

A graphene/titanium dioxide composite porous material, a preparation method and an application thereof. The invention relates to porous materials. The composite material has an interpenetrated pore structure with a substrate structure size being 100 nm-5 [mu]m and a pore diameter being 100 nm-5 [mu]m. The composite material is in a three-dimension net-pore structure. A micro-scale structure of the substrate is a continuous phase composed of graphene and nano titanium dioxide is dispersed on a dispersed graphene sheet layer. The graphene/titanium dioxide composite porous material is prepared by following steps including: dissolving a styrene segmented copolymer in a selective solvent to form a polymer micelle solution; adding a graphene oxide solution; adding titanium dioxide after the graphene oxide solution and the polymer micelle solution being mixed uniformly; performing ultrasound wave treatment; performing a curtain coating process on a carrying plate which is placed in a saturated atmosphere of a precipitant to obtain a polymer/graphene oxide/titanium dioxide composite porous material after the solvent being volatilized; performing a carbonizing process in an inert atmosphere with the carrying plate to obtain a product. The composite porous material can be applied in preparation of a graphene/titanium dioxide porous composite electrode which can be used in the fields such as photocatalysis, a lithium ion battery, a super capacitor and the like.

The invention discloses a preparation method of graphite type carbon nitride nanotubes. The preparation method comprises the following steps: adding melamine powder into a high temperature-resistant container, and placing the high temperature-resistant container on a vibrator for vibration treatment; then adding a cover on the high temperature-resistant container, placing the high temperature-resistant container into a program heating control device, heating to a first preset temperature at a relatively high heating rate and keeping for a period of time; further heating the program heating control device to a second preset temperature at a relatively low heating rate and keeping for a period of time; and cooling an obtained product to room temperature, and then grinding to form powder so as to obtain the graphite type carbon nitride nanotubes disclosed by the invention. In the synthesis process of the preparation method, the addition of a template or additional organic matters is not required, the preparation method has the advantages of low price, high yield, good repeatability, no impurity interference of products and the like, is simple and easy to operate, and the prepared carbon nitride nanotubes have good fluorescence performance and photocatalytic performance, and have broad application prospects in the fields of nano devices, photocatalysis and the like.

A preparation method of an yttria-stabilized zirconia tetragonal nano powder with high specific surface area. The method is characterized by comprising the following steps: (1) respectively weighing zirconium oxychloride octahydrate?and an yttrium raw material according to a stoichiometric ratio of zirconium and yttrium in (Y2O3)x(ZrO2) 1-2x (0.005<=x<=0.150), according to the amount of a target product, converting the yttrium raw material into an yttrium nitrate solution by dissolving, and then completely dissolving the zirconium oxychloride octahydrate; (2) respectively adding a soluble salt and organic fuel to the solution obtained in the step (1), heating for dissolving, continuing heating and concentrating to a sticky state, igniting in a heating furnace chamber at 400-1000 DEG C, and taking out the powder after complete combustion; and (3) washing, filtering and drying the powder obtained in the step (2). The invention effectively solves the problems of serious particle sintering agglomeration and small specific area in the process of solution combustion for synthesis of zirconium oxide; the powder has specific surface area as high as 378 m<2> / g and particle size about 2.8 nm; and the materials are more accessible and cheaper, so as to facilitate industrialized preparation.

The invention discloses a resolution-adjustable wavelength selection switch based on a phase grating array and a control method. The resolution-adjustable wavelength selection switch comprises a one-dimensional single mode fiber array, a microlens array, a polarization adjusting prism, a double-glued optical Fourier transformation lens, a transmissive phase diffraction grating array, a cylindrical mirror, a liquid crystal spatial light modulator and a graph loading control system. The transmissive phase diffraction grating array is adopted, difference in chromatic dispersivity of transmissive phase diffraction gratings different in period is utilized, and wavelength range of parallel beams finally imaged on the liquid crystal spatial light modulator and wavelength control accuracy determined by a single pixel unit can be changed by switching the transmissive phase diffraction gratings having different periods, so that switching and adjusting of working wavelength range and wavelength resolution of the wavelength selection switch are realized, and the wavelength selection switch can be used for processing large-bandwidth high-speed signals in backbone networks.

The invention relates to a method for preparing bis(fluorosulfonyl)imide, which is characterized in that double oxalate lithium borate or oxalate fluoboric acid lithium enables a metathesis exchange reaction with double fluorine sulfonyl imide potash to obtain the bis(fluorosulfonyl)imide product. The method for preparing bis(fluorosulfonyl)imide has a simple process route, and the industrialized production is easy to realize.

The invention provides a nanometer striking pin capable of intensifying micro-power on the surfaces of substances. The nanometer striking pin is characterized by being a polymer molecule composed of an artificial synthetic material.

The invention provides a catalyst for producing trichlorosilane with a silicon-hydrogen chlorination process, a preparation method of the catalyst and a method for catalytically producing the trichlorosilane. The catalyst is prepared from copper-based active ingredients and selectable additives; or the catalyst is prepared from a copper elementary substance and additives; the copper-based active ingredients comprise coppery oxide and/or copper salt, or the combination of the copper elementary substance and the coppery oxide and/or the copper salt; and the particle size of the catalyst is 0.5 to 100 microns. According to the catalyst, the selectivity of the trichlorosilane and the conversion rate of silica powder raw material can be obviously improved, the ingredients are simple, the catalyst is easy for industrial preparation and is free of pollution to the environment, reaction conditions for catalytically producing the trichlorosilane with the silicon-hydrogen chlorination process is mild, and a reaction is easy to control.

The invention discloses a preparation method of a porous copper oxide microsphere/multilayer graphene composite material. The preparation method comprises following steps: DMF and distilled water at avolume ratio of 8:2 are taken, and are mixed so as to obtain a mixed solvent; expandable graphite is added, ultrasonic vibration is carried out for 2 to 7h so as to obtain a multilayer graphene solution; copper acetate monohydrate is added into the multilayer graphene solution, stirring is carried out for 3 to 6h, an obtained mixed solution is introduced into a hydro-thermal reaction vessel, is subjected to thermal insulation treatment at 100 to 130 DEG C for 2h, and is cooled to room temperature; an obtained reaction product is subjected to centrifugal cleaning with alcohol for three times,and centrifugal cleaning with water for three times so as to obtain the dried porous copper oxide microsphere/multilayer graphene composite material. According to the preparation method, organic molecules are adopted for complexation of metal ions, so that porous copper oxide microspheres are prepared on the surface of multilayer graphene containing no oxygen functional groups, the obtained porouscopper oxide microsphere/multilayer graphene composite material possesses a special morphology.

The invention discloses a core-shell-structure lightweight aggregate prepared by a cold bonding method and a preparation method thereof. The preparation method comprises the following steps: preparinga calcined clay-based environment-friendly cementing material from ordinary Portland cement, calcined clay, limestone powder and gypsum in proportion; putting core material particles into a lightweight aggregate granulation device, then adding the calcined clay-based environment-friendly cementing material, and uniformly spraying a mixture for granulation to form primary cold-bonded aggregate; carrying out primary maintenance on the primarily-generated cold-bonded aggregate, soaking the primarily-generated cold-bonded aggregate in a solution containing organic acid or phenol compounds, takingout the primarily-generated cold-bonded aggregate, airing, and repeatedly spraying a calcium hydroxide aqueous solution on the surface of the aggregate to form aggregate with a super-hydrophobic surface; and subjecting the aggregate with the super-hydrophobic surface to water for secondary maintenance to produce the super-hydrophobic high-strength lightweight aggregate. According to the core-shell structure lightweight aggregate and the preparation method thereof, energy is saved, consumption is low, the processing flow is simplified, solid waste recycling can be achieved, the water absorption rate is low, and the single bearing capacity is high.

The invention relates to a composite type artificial dura mater, comprising two hydrogel layers and a woven layer, wherein the woven layer is arranged between the two hydrogel layers, the woven layer is a degradable polymer material, and cell growth factors are contained in the hydrogel layers. The composite type artificial dura mater disclosed by the invention has the following beneficial effects: (1) the artificial dura mater is made from the degradable polymer material and biological protein which are easily available, and has good biocompatibility; (2) atmospheric pressure plasma jet treatment increases the fiber surface area of the woven layer, decreases a contact angle of a material surface, and improves water transmissibility, degradation speed and cellular affinity; (3) regulation on physical characteristics of the artificial dura mater, such as malleability, toughness, mechanical strength and the like can be realized by regulating a weaving method; and 4) the composite type artificial dura mater is favorable for wound repair, and silver ions enable artificial skin to have good antibacterial performance, so that toxic and side effects on a human body due to the use of a chemical antibacterial medicine are avoided, and storage life of the artificial skin is prolonged.

The invention discloses a method for preparing a porous polyvinylidene fluoride super-hydrophobic coating layer. The method comprises the following steps: mixing polyvinylidene fluoride and N,N-dimethyl formamide, performing stirring, mixing the obtained transparent solution with perfluordecyl triethoxy silane, performing stirring, mixing the obtained perfluordecyl triethoxy silane mixed solutionwith composite nano titanium dioxide granules, performing stirring, performing ultrasonic treatment, and smearing or spraying the obtained porous polyvinylidene fluoride super-hydrophobic coating to asubstrate, so as to obtain a porous polyvinylidene fluoride super-hydrophobic coating layer. The method disclosed by the invention has the advantages of being simple in process, convenient to operate, cheap in raw material, easy in industrial production, and the like, and the super-hydrophobic coating layer which is excellent in super-hydrophobic performance, good in ice resistance and wind resistance, good in weather resistance and good in adaptability can be prepared in a large scale, can be widely applied to anti-ice treatment on fan blades, has great significances for improving the performance and increasing the power generation capacity of a wind turbine generator, and has high use value and good application prospects.

The invention relates to a production process of a crystalline silicon double-sided solar battery, comprising the following steps of: etching to enable a silicon substrate to have an etched face; manufacturing a window which accords with an electrode pattern on a backlight face of the silicon substrate; carrying out heat treatment on the silicon substrate to form a PN junction in the window; washing the silicon substrate; plating at least two layers of antireflection films on a light reflective face of the silicon substrate; plating the antireflection film on a backlight face of the silicon substrate; printing electrode slurry on a silk screen; and sintering to obtain a metal electrode so as to finish the manufacturing of a battery cell. The production process disclosed by the invention is ingenious in concept, is compatible with a conventional industrial battery production line and is easy for industrial manufacture; compared with the conventional solar battery, an electrode grid line is not arranged on the light reflective face of the double-sided solar battery so as to prevent the electrode grid line of the light reflective face from shielding sunlight; the backlight face is provided with a light trapping structure and an antireflection film layer so that the backlight face of the battery also can absorb and utilize the sunlight; and the antireflection films of the light reflective face and the backlight face can passivate the solar battery, so as to be good for improving the efficiency of the battery.

The invention discloses a technique of preparing 3-fluorin-5-bromobenzotrifluoride which is an intermediate for novel medicine, belonging to the technical field of fine chemicals intermediate. The technique of preparing 3-fluorin-5-bromobenzotrifluoride takes 4-fluorin-6-nitrobenzotrifluoride as the initial material,and the 3-fluorin-5-bromobenzotrifluoride is prepared by reduction, bromination and deamination in sequence. The invention has reasonable and advanced technology, each involving reaction is regular unit reaction, and the 3-fluorin-5-bromobenzotrifluoride is an intermediate for the novel medicine; besides, the invention is easy in industrial production and ensures high yield.

The invention belongs to the technical field of pharmaceutical chemistry, in particular to a crystal form alpha of vonoprazan fumarate and the preparation method of the new crystal form. The crystal form has high purity as well as favorable chemical stability and crystal form stability; the crystal form can be prepared through mass production, of which the process is simple and the cost is low, so the potential applications are fantastic.

The invention provides a preparing method of an electronic packaging material. The electronic packaging material is composed of a base body and a reinforcement body; the base body comprises an aluminum alloy, and the reinforcement body comprises graphene oxide and SiC particles and comprises, by mass percentage, 2% of graphene oxide, 50% of SiC particles and the balance aluminum alloy powder; and the aluminum alloy powder comprises 70% of Al-Si, 10% of Al-Ti-B, 10% of Al-Be and 10% of Al powder. By the adoption of the method, the light electronic packaging material with the density lower than 3.1g/cm<3> and thermal conductivity larger than 180 W/(m K) can be prepared, and therefore the comprehensive performance of a military electronic device can be greatly improved; and the preparing method is suitable for producing and preparing of packaging materials of portable devices, military power hybrid circuits of aerospace and other fields sensitive to weight, carriers of microwave tubes, and heat-sink and super-power modules of a multi-chip assembly.