34results about How to "The operation process is simple and controllable" patented technology

The invention discloses a high-strength viscose fiber and a production method thereof, which are characterized in that the viscose fiber is formed by mixing bacterial cellulose and viscose spinning solution, wherein the content of the bacterial cellulose in the viscose fiber is 1 to 10 percent. The production method comprises the following steps: the flake bacterial cellulose is pre-processed, and then the flake bacterial cellulose after the preprocessing is smashed with a ball milling method to obtain a micro nano-grade bacterial cellulose powder; the bacterial cellulose powder is added into the viscose spinning solution to be uniformly scattered and defoamed to obtain a spinning solution; and the spinning solution is made into a high-strength viscose fiber. The content of the bacterial cellulose in the viscose fiber is 1 to 10 percent. The viscose fiber which is prepared with the production method has high strength, small shrinkage and good elasticity, can be blended and interwoven with cotton, wool and other synthesized fibers to be used for the fields such as top-grade costume fabric and industrial textiles, and the like.

The invention discloses a hydroxyapatite / phase transformation lysozyme coating hybrid material and a preparation method thereof. The preparation method comprises the following steps: simulating biological mineralization in natural world, taking lysozyme as a protein template, chelating calcium ions onto the surface of a base material by utilizing functional groups abundant on the surface, then simulating a biological mineralization process in vitro by virtue of electrostatic interaction, successfully inducing nucleation of hydroxyapatite, and crystallizing, so that the hydroxyapatite / phase transformation lysozyme coating hybrid material which is similar to a natural bone in ingredient and structure is prepared. The hydroxyapatite / phase transformation lysozyme coating hybrid material is strong in mechanical stability, large in superficial area, good in biocompatibility and high in bone conductibility, can be taken as a tissue repairing material for guiding formation of a new tissue and induced mineralization of a bone, is expected to become a novel hard tissue substitute material and is simple in preparation process, mild in conditions, controllable in crystal morphology, environment-friendly and low in cost, so that the hydroxyapatite / phase transformation lysozyme coating hybrid material is applicable to preparation of hydroxyapatite on the surfaces of multiple base materials and has a broad application prospect.

The invention provides a preparation method of an alpha-Al2O3 / mullite multiphase ceramic fiber. The preparation method comprises the following steps: mixing aluminum powder, aluminum salt and water, performing heating reflux at 110-200 DEG C till the aluminum powder reacts completely to form aluminum collosol, mixing the aluminum collosol prepared by the above method, silicasol, nano particle dispersing liquid and a spin finish aid, and performing aging, concentration, spinning and calcining to form the alpha-Al2O3 / mullite multiphase ceramic fiber, wherein the nano particle dispersing liquid is one or a combination of more than two of alpha-Al2O3 dispersing liquid, gamma-Al2O3 dispersing liquid or alpha-Fe2O3 dispersing liquid. A formation temperature difference of alpha-Al2O3 and a mullite crystal phase in the ceramic fiber is reduced by adding nano particles; and the dense ceramic fiber that is high in length, excellent in mechanical property and high in purity can be prepared at a lower temperature.

The invention discloses a preparation method of spontaneous heating cellulosic fibers and spontaneous heating cellulosic fibers prepared by adopting the method. The preparation method comprises the steps of preparing a spinning solution and preparing spontaneous heating cellulosic fibers. The spontaneous heating cellulosic fibers comprise 0.5 to 3 percent by weight of capsaicine and are uniformlydistributed in a porous structure inside the cellulosic fibers, and an aperture is distributed in a range of 20 to 100 nm. The spontaneous heating cellulosic fibers have a good heating efficacy and stability, after the spontaneous heating cellulosic fibers are washed by 1 to 3 percent by weight of sodium dodecyl sulfate solution for 10 to 70 times, 95 percent or more of heating function performance can still be maintained, and the spontaneous heating cellulosic fibers can be widely applied to products such as underwears, home textiles, socks.

The invention discloses a SiC nano array comprising a substrate and a nano array arranged on the surface thereof. The nano array is formed by SiC nano wires, wherein the crystal form of SiC in the SiC nano wires can be C type, H type or R type. Array density of the nano wires in the SiC nano array is (5.0-6.0)*10<7> / cm<2>. The SiC nano array is simple in process, is convenient to produce, is stable in product quality and is stable in performance.

The invention discloses high-purity N-doped TiO2 full-mesoporous nanofiber. Main composition elements of the nanofiber are Ti, O and N, wherein main expression forms of the elements Ti and O in the nanofiber are TiO2 and N is a doping element. The nanofiber has a porous structure, pores of which contain mesopores. The nanofiber disclosed in the invention has advantages of simple process, convenience in production and good quality stability of the product.

The invention discloses an application of N-doped TiO2 nano fiber in a high-efficiency visible light photocatalyst, the main composition elements of the nano fiber is Ti, O and N, wherein, a main expression form of Ti and O elements in nano fiber is TiO2, N is a doping element; the nano fiber has a porous structure, and the pore of the porous structure comprises meso pore. The N-doped TiO2 nano fiber has the advantages of high catalytic activity, low application cost, good repetition usage performance of the catalyst, and regeneration and reuse.

The present invention discloses a stevia rebaudiana and oat germ enzyme and black fungus beverage and a preparation method thereof. Each 1000 g of the beverage comprises an enzyme raw liquid by fermenting 0.72-0.84 g of the stevia rebaudiana and using the oat germ as a carbon source, black fungus broken grains manufactured by 20-35 g of the black fungus, and the balance being RO water. The stevia rebaudiana and the black fungus are used as raw materials, the raw materials are subjected to a microorganism fermentation, the nutritional essence of the stevia rebaudiana is preserved, and at the same time, the nutritional benefits of the stevia rebaudiana are fully played. The beverage is rich in a variety of active enzymes, vitamins, minerals and microbial metabolism products needed by human body, good in mouthfeel, and low in sugar content, has functions of lowering blood sugar and lipids, and preventing thrombosis, tumors and oxidation and other important physiological functions, and is suitable for a long-term drinking and brings a healthy and innovative product to consumers. The preparation method is mild in reaction, low in production cost, simple and easily controllable in operation processes, and easy to implement large-scale industrial production.

The invention discloses a silver-based multi-layer composite electrical contact material and a preparation method thereof. The silver-based multi-layer composite electrical contact material comprisesa working layer, an intermediate layer, a welding layer and a soldering layer, wherein the intermediate layer is arranged between the working layer and the welding layer, a pure silver or silver alloysoldering layer is arranged between the intermediate layer and the working layer, the material of the welding layer is cheap metal iron or iron-based alloy, the material of the intermediate layer ischeap metal copper or copper alloy, and the material of the working layer is one of AgMeO systems. The material is prepared by directional combination rolling, continuous diffusion annealing and coldrolling. Due to the presence of Cu and Fe, a large amount of silver can be saved, and the cost is substantially reduced; and the operation process has the advantages of good material consistency, highpracticability and the like and is simple and controllable, is suitable for mass production, the prepared silver-based multi-layer composite electrical contact material has the advantages of high conductivity, favorable bonding strength and weldability and can be widely applied to industry of a temperature controller, a contact is attractive in positioning, and the influence on thermal deformation of a welding piece is small.

The invention discloses a method of regulating and controlling density of a SiC nano array, which includes following steps: 1) preparation of a precursor and a substrate; 2) catalyst deposition: depositing a catalyst layer on the surface of a substrate; and 3) sintering: sintering the substrate deposited with the catalyst layer and the precursor under a sintering atmosphere, so that the precursor is pyrolyzed on the surface of the substrate to form the SiC nano array. The preparation method is simple in process, is convenient to carry out, is beneficial to scale enlargement, is good in safety, is good in product quality stability and is stable in product performance.

The invention discloses a preparation method of high-purity Ag-loading TiO2 full-mesoporous nanofiber. The method comprises the following steps: (1) a precursor spinning solution is prepared, wherein polyvinylpyrrolidone, butyl titanate, isopropyl azodicarboxylate are dissolved in a mixed solvent of anhydrous ethanol and glacial acetic acid, such that a uniform precursor spinning solution is obtained; (2) precursor nanowires are prepared, wherein the precursor spinning solution obtained in the step (1) is prepared into the precursor nanowires through spinning; (3) nanowires are prepared, wherein the precursor nanowires obtained in the step (2) are subjected to high-temperature calcination, such that TiO2 full-mesoporous nanofiber is obtained; (4) Ag nanoparticles are loaded through photo-deposition, wherein the TiO2 full-mesoporous nanofiber obtained in the step (3) is uniformly dispersed in a solvent containing soluble silver salt; illumination is carried out under stirring, such that photo-deposition is carried out; and post-treatment is carried out, such that the high-purity Ag-loading TiO2 full-mesoporous nanofiber is obtained. The nanofiber preparation method has the advantages of simple process, convenient production, and good product quality stability. When the nanofiber is used in water photolysis, the catalytic effect is high, and the property is stable.

The invention relates to a method for preparation of a silver antimony telluride thermoelectric material by combining low temperature solid phase reaction with hot pressing process. The method comprises the steps of: 1) ingredient compounding: according to the stoichiometric ratio of each element in the chemical formula AgSbTe2+x, weighing elemental silver, elemental tellurium and elemental antimony as raw materials, wherein x is 0-0.02; 2) briquetting sealing; 3) solid phase reaction: raising the temperature of the vacuum-tight block obtained in step 2) to a reaction temperature of 390-450DEG C, and conducting heat preservation for 6-12h to obtain a single phase silver antimony telluride ingot body or approximate single phase silver antimony telluride ingot body; 4) hot-pressing: grinding the obtained ingot and then performing hot pressed sintering, thus obtaining the high density silver antimony telluride thermoelectric material. The method has the characteristics of low reaction temperature, simple and controllable process, low preparation cost, and the prepared silver antimony telluride block material has the advantages of high density, high purity, good repeatability and excellent thermoelectric properties.

The invention discloses a high-purity TiO2 mesoporous nano fiber loaded with Ag. Main composition elements of the high-purity TiO2 mesoporous nano fiber are Ti, O, and Ag, wherein Ti and O mainly exist in the high-purity TiO2 mesoporous nano fiber in the form of TiO2, and Ag is a doping element; the high-purity TiO2 mesoporous nano fiber possesses a porous structure; and the porous structure possesses mesoporous. A preparation method is simple; production is convenient; product quality stability is excellent; catalytic efficiency of the high-purity TiO2 mesoporous nano fiber in water photolysis is high; and performance is stable.

The invention discloses a method of regulating and controlling density of a SiC nano array, which includes following steps: 1) preparation of a precursor and a substrate; 2) catalyst deposition: depositing a catalyst layer on the surface of a substrate; and 3) sintering: sintering the substrate deposited with the catalyst layer and the precursor under a sintering atmosphere, so that the precursor is pyrolyzed on the surface of the substrate to form the SiC nano array. The preparation method is simple in process, is convenient to carry out, is beneficial to scale enlargement, is good in safety, is good in product quality stability and is stable in product performance.

The present invention provides a GaAs-based room-temperature infrared luminescent material based on bismuth and a preparation method thereof, including an InxGa1-xAs material layer and a GaAs1-yBiy material layer, wherein 0

The invention discloses applications of high-purity Ag-loaded TiO2 mesoporous nanofiber as a high-efficiency photocatalyst. The high-purity Ag-loaded TiO2 mesoporous nanofiber is mainly composed of Ti, O, and Ag; the main existence form of Ti and O element in the high-purity Ag-loaded TiO2 mesoporous nanofiber is TiO2; Ag is a load element; and the high-purity Ag-loaded TiO2 mesoporous nanofiber possesses a porous structure with holes including mesoporous. A preparation method of the high-purity Ag-loaded TiO2 mesoporous nanofiber is simple; production is convenient; product quality is stable; catalytic efficiency of the high-purity Ag-loaded TiO2 mesoporous nanofiber in water photolysis is high; and performance is stable.

The present invention relates to microcrystal glass top plate as one kind of building member and its production process and application. The production process includes the first sintering of the mixture of quartzite, limestone, etc. to form granular glass material; spreading the granular glass material inside one shaped frame and the second sintering to form the semi-finished microcrystal glass member; the third sintering of the cooled member inside one crystallizing furnace at 1110-1140 deg.c and temperature variation within 10 deg.c for 50-70 min; and polishing, grinding and shaping. The production process can form top plate with compact structure, no bubble, high wear resistance, easy trimming, good appearance and texture, and is easy to control.

The invention researches a rapid propagation method for rosemary suspension cell culture. The rapid propagation method comprises the steps of obtaining germfree seedlings, inducing calluses, culturing and optimizing suspension cells, regenerating plants and the like. Rosemary suspension cells prepared by the rapid propagation method are high in proliferation rate, short in growth period and high in secondary metabolite, and are favorable for development and utilization of medicinal components of rosemary.

The invention discloses a silver-based multi-layer composite electrical contact material and a preparation method thereof. The silver-based multi-layer composite electrical contact material comprisesa working layer, an intermediate layer, a welding layer and a soldering layer, wherein the intermediate layer is arranged between the working layer and the welding layer, a pure silver or silver alloysoldering layer is arranged between the intermediate layer and the working layer, the material of the welding layer is cheap metal iron or iron-based alloy, the material of the intermediate layer ischeap metal copper or copper alloy, and the material of the working layer is one of AgMeO systems. The material is prepared by directional combination rolling, continuous diffusion annealing and coldrolling. Due to the presence of Cu and Fe, a large amount of silver can be saved, and the cost is substantially reduced; and the operation process has the advantages of good material consistency, highpracticability and the like and is simple and controllable, is suitable for mass production, the prepared silver-based multi-layer composite electrical contact material has the advantages of high conductivity, favorable bonding strength and weldability and can be widely applied to industry of a temperature controller, a contact is attractive in positioning, and the influence on thermal deformation of a welding piece is small.

The invention relates to a method for preparing silver antimony telluride thermoelectric materials by low-temperature solid-state reaction combined with hot pressing process, which includes the following steps: 1) Ingredients: Weigh elemental silver, tellurium and Antimony is used as raw material, where Silver telluride antimony ingot or nearly single-phase silver antimony telluride ingot; 4) hot pressing: grind the ingot obtained in step 3) and then perform hot pressing and sintering to obtain a high-density silver antimony telluride thermoelectric material. This method has low reaction temperature, simple and controllable process, low preparation cost, and the prepared silver antimony telluride bulk material has high density, high purity, good repeatability and excellent thermoelectric properties.

The invention discloses a hydroxyapatite / phase transformation lysozyme coating hybrid material and a preparation method thereof. The preparation method comprises the following steps: simulating biological mineralization in natural world, taking lysozyme as a protein template, chelating calcium ions onto the surface of a base material by utilizing functional groups abundant on the surface, then simulating a biological mineralization process in vitro by virtue of electrostatic interaction, successfully inducing nucleation of hydroxyapatite, and crystallizing, so that the hydroxyapatite / phase transformation lysozyme coating hybrid material which is similar to a natural bone in ingredient and structure is prepared. The hydroxyapatite / phase transformation lysozyme coating hybrid material is strong in mechanical stability, large in superficial area, good in biocompatibility and high in bone conductibility, can be taken as a tissue repairing material for guiding formation of a new tissue and induced mineralization of a bone, is expected to become a novel hard tissue substitute material and is simple in preparation process, mild in conditions, controllable in crystal morphology, environment-friendly and low in cost, so that the hydroxyapatite / phase transformation lysozyme coating hybrid material is applicable to preparation of hydroxyapatite on the surfaces of multiple base materials and has a broad application prospect.

The invention discloses a preparation method of tris(dibenzylideneacetone)dipalladium(0). The method comprises: 1. Under a nitrogen atmosphere, the ligand dibenzylideneacetone, palladium dichloride and anhydrous Sodium acetate is added in the dehydrated alcohol of stirring state and heated reaction, obtains solid bis (dibenzylidene acetone) palladium (0) after filtration; Two, under nitrogen atmosphere, the solid bis (dibenzylidene acetone) that obtains in step Acetone)palladium(0) was added into acetone in a stirring state for reaction, the retentate was washed after filtration, and the washed retentate was dried to obtain tris(dibenzylideneacetone)dipalladium(0). The present invention adopts dehydrated alcohol, dibenzylidene acetone, palladium dichloride and anhydrous sodium acetate to first prepare bis(dibenzylidene acetone) palladium (0), and then obtains tris(dibenzylidene acetone) through acetone solution treatment ) dipalladium (0), the three (dibenzylideneacetone) dipalladium (0) obtained has higher purity.

The invention discloses a high-strength viscose fiber and a production method thereof, which are characterized in that the viscose fiber is formed by mixing bacterial cellulose and viscose spinning solution, wherein the content of the bacterial cellulose in the viscose fiber is 1 to 10 percent. The production method comprises the following steps: the flake bacterial cellulose is pre-processed, and then the flake bacterial cellulose after the preprocessing is smashed with a ball milling method to obtain a micro nano-grade bacterial cellulose powder; the bacterial cellulose powder is added intothe viscose spinning solution to be uniformly scattered and defoamed to obtain a spinning solution; and the spinning solution is made into a high-strength viscose fiber. The content of the bacterial cellulose in the viscose fiber is 1 to 10 percent. The viscose fiber which is prepared with the production method has high strength, small shrinkage and good elasticity, can be blended and interwoven with cotton, wool and other synthesized fibers to be used for the fields such as top-grade costume fabric and industrial textiles, and the like.

The invention discloses a novel method for preparing Sildenafil intermediate 4-amino-1-methyl-3-n-propyl-pyrazole-5-formamide. According to the method, the 4-amino-1-methyl-3-n-propyl-pyrazole-5-formamide is prepared from 1-methyl-3-n-propyl-pyrazole-5-ethyl formate through bromation and ammoniation. The novel method disclosed by the invention is safe, efficient and environment-friendly and is suitable for industrial production.

The invention discloses a method for preparing a water-based graphene epoxy resin nanocomposite material. The specific steps are as follows: the graphene oxide obtained by the Hummers method is functionally modified and dispersed to obtain a high-concentration graphene aqueous dispersion; Add epoxy resin to the graphene aqueous dispersion, stir evenly, remove water under vacuum conditions and add curing agent to mix; after high temperature curing, the graphene / epoxy resin nanocomposite material is obtained, the operation process is simple and controllable, and it is easy to scale Batch preparation and synthesis; through the acquisition of highly stable graphene aqueous dispersion, graphene and epoxy resin have excellent interfacial compatibility and bonding force; effectively improve the bonding force between epoxy resin and substrate, corrosion resistance and Impact resistance: Compared with conventional water-based epoxy resin materials, the hardness of the water-based graphene / epoxy resin nanocomposite prepared by the present invention is increased by 1.5 times, and the impact resistance is increased by 12 times.

The invention discloses a SiC nano array comprising a substrate and a nano array arranged on the surface thereof. The nano array is formed by SiC nano wires, wherein the crystal form of SiC in the SiC nano wires can be C type, H type or R type. Array density of the nano wires in the SiC nano array is (5.0-6.0)*10<7> / cm<2>. The SiC nano array is simple in process, is convenient to produce, is stable in product quality and is stable in performance.

The invention discloses a method for preparing proton current-conducting membrane fuel cell by adopting a spin coating method. The method is as follows: the mixing powder is dried for obtaining raw material powder; the raw material powder is directly spin-coated for preparing the proton current-conducting membrane by reaction in-situ; and the basic needed materials of the cell are obtained by sintering the mixing powder at high temperature. The electrolysis membrane is produced on a cell matrix by using the spin coating method, thus leading the electrolysis membrane to have compact structure and no cracking. The method shows that after being tested by the electrochemistry: and the maximum power density includes respectively 50mW / cm<2>, 155mW / cm<2> and 200mW / cm<2> at the temperature of 600DEG C, 700 DEG C, and 800 DEG C.

The invention discloses a novel method for preparing Sildenafil intermediate 4-amino-1-methyl-3-n-propyl-pyrazole-5-formamide. According to the method, the 4-amino-1-methyl-3-n-propyl-pyrazole-5-formamide is prepared from 1-methyl-3-n-propyl-pyrazole-5-ethyl formate through bromation and ammoniation. The novel method disclosed by the invention is safe, efficient and environment-friendly and is suitable for industrial production.