104results about How to "Easy to achieve industrial production" patented technology

The invention discloses a low-corrosion and high-efficiency chlorine salt deicing agent, which is prepared from the following raw materials in percentage by mass: 85%-98% of sodium chloride, 1%-10% of a corrosion inhibitor and 1%-5% of an adjuvant, wherein the corrosion inhibitor is prepared from sodium silicate, disodium hydrogen phosphate, sodium tartrate and sodium citrate; and the adjuvant is prepared from sodium humate, urea and heteroauxin. Silicate in the corrosion inhibitor disclosed by the invention can form a protective film on the metal surface to avoid corrosion to metal caused by chlorine salt and synergistic effect of disodium hydrogen phosphate and sodium silicate; the corrosion inhibition effect is enhanced; a chemical adsorption layer is formed by coordinated complexation of polar radical of sodium citrate and sodium tartrate donor and a metal surface; a dual-electric layer structure is formed on the metal surface; a drainage layer is formed by nonpolar radical directional arrangement; chemical corrosion of metal is prevented; and the damages to soil and plants can be reduced by urea, sodium humate and heteroauxin. The preparation method disclosed by the invention is simple, mild in condition, available in raw materials, and easy to put into industrial application, and can be carried out under normal temperature and pressure.

The invention belongs to the field of preparation of composite materials, and relates to a method for preparing a high-entropy alloy/diamond composite film or coating by fixed-point energy input and rapid cooling. The preparation method comprises the steps that high-entropy alloy powder and diamond particles are prepared according to a set ratio; a high-entropy alloy/diamond composite is preparedby the methods of the fixed-point energy input and rapid cooling; the energy density range of the fixed-point energy input is 10-40J/mm<2>; the cooling rate is greater than or equal to 106 DEG C/min;and during fixed-point energy input, the diameter of an energy input point is 4.5-6.3mm, and the moving speed of the energy input point is 40-100mm/s. A carrier and diamonds are protected from being destroyed, and at the same time, the high-entropy alloy/diamond composite film or coating is rapidly prepared, so that uniform distribution of the diamond particles inside the carcass is realized, andthe process is suitable for the diamond particles with various qualities and various types of laser cladding equipment.

The invention discloses a method for preparing silk protein composite cellulose fibers, which includes steps: firstly, adding degummed waste silk into LiBr solution, dissolving the waste silk to prepare silk protein solution in which silk protein accounts for 3-15%, by weight; secondly, adding the silk protein solution into sodium hydroxide solution with cellulose sulfonate to obtain blended solution of silk protein and cellulose, wherein blended silk protein solution accounts for 5-50% of that of the sodium hydroxide with cellulose sulfonate by weight; and thirdly, spinning the blended solution by coagulating bath and obtaining the silk protein composite cellulose fibers by post-processing. By the method, recovery value of the waste silk is improved greatly, special effects of whitening and skin caring of the silk protein composite cellulose fibers can be realized, and the fibers are smooth and soft to touch as silk, and have the skin caring and whitening effects that the effects of protein powder fibers or blended fibers of protein powder and cellulose solution cannot match.

The invention discloses a core-shell structure thermite and a preparation method thereof. The method includes the steps: dissolving poly- 4-vinylpyridine (P4VP) in isopropyl alcohol to form mixed liquid, placing nano-silicon powder into the mixed liquid to ultrasonically treat mixture, centrifugally separating the mixture, washing separated substances by isopropyl alcohol to remove the P4VP without being coated, and drying the separated substances to obtain silicon powder coated by the P4VP; placing the silicon powder into the isopropyl alcohol, adding metal oxide micro-powder with stoichiometric ratio, and ultrasonically treating mixture to form slurry; performing vacuum drying on the acquired slurry, and grinding and crushing the dried slurry to obtain the Si@MOx nano-scale core-shell structure thermite which takes nano-silicon powder as a core and a metal oxide as a shell. According to a core-shell structure, the mass transfer distance between the silicon powder and the metal oxideis shortened, reaction activation energy is reduced, and the external work doing capability of the compound thermite is improved. The preparation method is simple and easy, the prepared core-shell structure thermite has the advantages of good combustion performance, high heat release, accurate and adjustable shell layer thickness and the like.

The invention discloses a CN-MCN superhard self-lubricating nano-composite coating and a preparation method thereof. An electric arc discharge method and a hollow cathode electric arc discharge carbon source combination method are adopted to generate a combination layer, a transition layer, a supporting layer and a lubricating layer to sequentially form the nano-composite coating. The preparation method has the advantages of being high in ionization rate, simple in coating device structure, high in deposition rate and the like. The prepared CN-MCN superhard self-lubricating nano-composite coating is high coating hardness, strong in adhesive power, good in self-lubricating property, high in coating growing speed and production efficiency, low in production cost and friction coefficient and good in coating toughness and can remarkably improve the abrasion-resisting and lubricating performance of processing cutters, dies and mechanical parts. In addition, the preparation method is simple, industrial production is easily achieved, and the CN-MCN superhard self-lubricating nano-composite coating has good application prospect.

The invention provides a zinc-doped indium oxide nano gas sensitive material and a preparation method thereof. The zinc-doped indium oxide nano gas sensitive material can be represented by ZnO-In2O3, wherein the mole ratio of Zn to In is (0.0042-1): 1; and the particle diameter is 10 to 30 nanometers. The zinc-doped indium oxide nano gas sensitive material is prepared by taking indium salt, zinc salt and a precipitant as raw materials by adopting a chemical solution method under the condition of no template, no surfactant and relatively low temperature; and the obtained zinc-doped indium oxide particles are uniformly scattered, and an agglomeration phenomenon is avoided. The zinc-doped indium oxide nano gas sensitive material is sensitive to ethanol and nitrogen dioxide, has the characteristics of low working temperature, high response recovery speed, high sensitivity, high selectivity and the like and can be used as a sensitive material of an ethanol and nitrogen dioxide sensor. The zinc-doped indium oxide nano gas sensitive material prepared by the method is relatively high in ultraviolet absorption performance and relatively high in fluorescence emission performance and can be used as a luminous material.

The invention discloses a preparation method of a high temperature resistant forsterite type refractory material. The method comprises the following steps: using nickel-iron slag as raw materials and magnesia powder as additives, wherein the ratio of [w (MgO) + w (FeO)] to [w (Al2O3)+w (Cr2O3)] is 10.50 to 13.57, the ratio of w (MgO) to w (Cr2O3) is 34.90 to 48.12 and the ratio of w (MgO) to w (SiO2) is 1.19 to 1.61, adding binding agents and controlling calcination temperature to be 1360 DEG C to 1450 DEG C, inducing mineral phase reconstruction of the nickel-iron slag, optimizing transformation process of refractory crystal form (Mg2SiO4, MgO.Fe2O3, MgO.Al2O3, MgO.Cr2O3) to increase refractoriness of the refractory material. The refractoriness of the obtained refractory material is 1700 to 1800 DEG C, and the refractory material also has the advantages of high compressive strength, large bulk density, low apparent porosity, and can fully meet the industrial need of the refractory material. The preparation method of the high temperature resistant forsterite type refractory material has the advantages of high utilization rate of resources, high production efficiency, high added value, environment friendliness, easiness in process control, low production cost and the like.

The invention provides a transparent conductive metallic film and a preparation method thereof. The film is prepared from amorphous metallic copper by using a magnetron sputtering method, wherein the transparent conductive metallic film has a thickness of 7-30nm and an electrical resistivity of 10-5 to 10-4 Ohm cm; when being preferably 7-12nm in thickness, the transparent conductive metallic film has the light transmittance of 78-85%; the transparent conductive metallic film has a double-layered structure, and the outermost layer is an oxygen absorbing layer with the thickness stabilized in the range of 3-5nm. The thickness of the oxygen absorbing layer is not increased following the increasing of the whole thickness of the transparent conductive metallic film, therefore, the transparent conductive metallic film has decreased reflectivity and increased light transmittance in the visible light range.

The invention provides a preparation method of composite titanium dioxide. According to the preparation method, rutile type titanium dioxide is firstly directly synthesized in a liquid phase system at normal pressure and room temperature without phase conversion at high temperature, the process is simple, the production cost is greatly reduced, and the method is easy to realize industrial production. Secondly, prepared rutile type TiO2 is coated with white inorganic mineral powder with low price, the inorganic mineral powder is taken as a core in the liquid phase system, titanium dioxide slurry is taken as a coating matter, and inorganic mineral powder/TiO2 composite titanium dioxide is synthesized by a particle-particle coating method, so that the white mineral powder has certain natures of TiO2, such as high covering power and excellent weather resistance. By adding the composite titanium dioxide into plastic and rubber, the whiteness and gloss of the plastic can be significantly improved; and the composite titanium dioxide has the advantages of low production cost, sufficient raw material sources, no environmental pollution, a wide range of applications, significant economic benefits and the like, and further has positive effects in fields of reducing consumption of resources, protecting the environment and expanding the range of applications of the titanium dioxide.

The invention provides a preparation method of cobalt manganese spinel microspheres. The method comprises weighing manganese chloride and cobalt chloride, dissolving the manganese chloride and cobaltchloride in deionized water, weighing ammonium hydrogen carbonate as a pH adjuster, carrying out mixing through stirring, carrying out hydrothermal pretreatment at 100-150 DEG C, after the reaction product is naturally cooled, carrying out centrifugal filtration, orderly washing the precipitates through deionized water and ethanol, carrying out drying to obtain cobalt carbonate and manganese carbonate precursors, and calcining the cobalt carbonate and manganese carbonate precursors through a muffle furnace at a temperature of 500 to 700 DEG C for 1-3h to obtain the cobalt manganese spinel microspheres. The cobalt manganese spinel microspheres are used for research on thermal catalytic CO2 reduction and can produce synthetic organic fuel (methane). The cobalt manganese spinel obtained by the preparation method is a pure phase and spherical, has a high specific surface area, obvious exposes the high-energy crystal surface, reduces the temperature of thermal catalytic CO2 reduction and has high product selectivity.

The present invention discloses a preparation method of a fimasartan potassium salt hydrate. The method is as below: reacting a starting material 1(2-(2-butyl-4-hydroxy-6-methylpyrimidine-5-yl)-N,N-dimethylacetamide) with a starting material 2 (N-(triphenylmethyl)-5-(4'-bromomethyl-biphenyl-2-yl) tetrazole) in the presence of an alkali metal hydride in a mixed solvent of ethyl acetate and DMF, so as to obtain a compound IV; hydrolyzing the compound IV under acidic conditions to remove the protective group to obtain a compound III; subjecting the compound II to a thioamidation reaction with a Lawesson's reagent to obtain a compound II; and subjecting the compound II and potassium hydroxide to a salt-forming reaction in a mixture of isopropyl alcohol and water to obtain a desired product. The present invention has the advantages of easily available process feedstock, mild reaction conditions at room temperature, economical performance, environment-friendliness and easiness to operation, reduces the process cost to a large extent, and is easy to realize industrial production.

The invention relates to a method for simply regulating ferroferric oxide nanoparticle morphology. The method comprises: dissolving a ferrous iron salt and a ferric iron salt into water, adding NaOH, adjusting the pH value to 10-12, stirring to obtain ferroferric oxide, filtering, alternately washing with water and ethanol, and drying to obtain spherical ferroferric oxide nanoparticles; and dissolving a ferrous iron salt and a ferric iron salt into water, adding sodium dodecyl sulfate and NaOH, adjusting the pH value to 10-12, irradiating under a visible light source to obtain ferroferric oxide, filtering, alternately washing with water and ethanol, and drying to obtain cube-shaped ferroferric oxide nanoparticles or rod-like ferroferric oxide nanoparticles. The method has advantages of relative simpleness, low production cost, easy morphology control, and easy scalization achievement.

The invention relates to the technical field of material surface vacuum coating, particularly relates to a high-binding-force solid antibacterial lubricating film layer of a space mechanism and a preparation method of the solid antibacterial lubricating film layer. The solid antibacterial lubricating film layer comprises a basal body, a Ti bonding layer, a TiN transition layer, a TiN functional layer and MoS2-Cu-Ag functional layer, a nanocrystalline composite coating formed in sequence, wherein the TiN functional layer is connected with the MoS2-Cu-Ag The Cu-Ag functional layers are alternately arranged, and the outermost layer is an MoS2-Cu-Ag functional layer. The prepared nanocrystalline composite film is high in adhesive force, low in friction coefficient and good in antibacterial effect, the service life of the space mechanism system component can be greatly prolonged, and the reliability of the space mechanism system component can be improved.

The invention discloses a terminal carboxyl group SBS, which has an epoxy ring opening flexible bond, an ester bond and a terminal carboxyl group and other structures. The preparation method of the terminal carboxyl group SBS is also disclosed, and active anionic SBS block polymer is prepared by using an anionic polymerization method; ring opening reaction is carried out on the anionic SBS block polymer and an epoxy hydrocarbon compound to obtain active oxygen anion SBS block polymer; terminal capping reaction is carried out on the active oxygen anion SBS block polymer and an acid anhydride compound; after the terminal capping reaction is finished, the terminal carboxyl group SBS is obtained after termination and post-treatment. Besides, the invention also discloses the application of theterminal carboxyl group SBS to asphalt modification. The terminal carboxyl group SBS can obviously improve the comprehensive performance of the asphalt and reduce a segregation value, thereby improving the transportation storage stability of modified asphalt. Besides, the preparation method of the terminal carboxyl group SBS is simple and is easy in industrialized implementation.

The invention discloses a process for accelerating a core removal speed by utilizing a liquid-electric effect. A corrosion removal process of a mold core of a cast part and a washing process of an inner cavity of the cast part are proceeded at the same time, namely, under a set temperature and pressure environment, a high-voltage pulse current is applied to a liquid corrosion medium without interruption at intervals, the liquid corrosion medium is quickly vaporized or expanded or generate a shock wave or a cavity by the liquid-electric effect, the mold core of the cast part is carried out chemical corrosion reaction and physical erosion, a corroded product flows out of a mold cavity of the cast part, and a new mold core corrosion interface of the cast part is formed in the mold cavity of the cast part without interruption so as to accelerate the removal speed of the mold core of the cast part. The invention further discloses a high-temperature high-pressure core removal kettle with the liquid-electric effect. An electrode is arranged above the cast part; a bottom end of the electrode is also soaked in a corrosion liquid pool; the electrode is not in contact with the cast part loaded in a material frame; a top end of the electrode is connected with a high-voltage pulse power supply; the corrosion liquid pool is grounded; and the high-voltage pulse power supply is controlled to apply the high-voltage pulse current to the corrosion liquid pool without interruption at intervals.

A method for preparing double-90 white filler from bauxite tailing comprises the following steps: firstly, heating the bauxite tailing and sulfuric acid at the temperature of 150-300 DEG C for 4-24 hours; secondly, adding water to adjust the pulp density and the pH value; adding sodium dithionite, performing reaction at the temperature of 25-90 DEG C and then filtering to obtain an ore sludge filter cake; adding water into the ore sludge filter cake and mixing to form ore pulp; grinding, grading and drying the ore pulp to obtain superfine powder with the grading content of 0.2 Mum and the whiteness of more than 90 percent; and finally, calcining the superfine powder at the temperature of 800-1000 DEG C to obtain the double-90 white filler. The double-90 white filler produced by the method disclosed by the invention has a high added value, can be applied to the fields of high-grade coating and paint, plastic, rubber and the like and has favorable economic benefits and social benefits. The method disclosed by the invention has the advantages of simple process, low cost, less investment and easiness in realization of industrial production. According to the method disclosed by the invention, the bauxite tailing can be treated in a large batch, the waste can be changed into valuables and a favorable technical path for treating and comprehensively utilizing the bauxite tailing is provided.

The invention provides a furnace bottom structure for a rotary hearth furnace. The furnace bottom structure comprises a heat preserving layer, a heating layer and an anti-slag-corrosion heat transfer layer in sequence from bottom to top, wherein the heat preserving layer and the heating layer are fixed; the anti-slag-corrosion heat transfer layer can rotate relative to the heat preserving layer and the heating layer; resistance wires are buried in the heating layer; the inside of the rotary hearth furnace is partitioned into a plurality of regions; the quantity of the resistance wires in the heating layer correspondsing to each region is set in advance; a layer of second steel plate is fixed on the upper part of the heating layer; a layer of first steel plate is fixed on the lower part of the anti-slag-corrosion heat transfer layer; a certain gap is kept between the first steel plate and the second steel plate, so that radiation heat transfer can be realized, and friction is prevented. By adopting the furnace bottom structure for the rotary hearth furnace provided by the invention, effective heat transfer and rapid reduction of a deep bed in a reduction process can be realized.

The invention discloses a composite ferroferric oxide and manganese dioxide Fenton catalyst. The catalyst comprises diatomite, wherein the mass ratio of the diatomite to ferroferric oxide is (1:0.3) to (1:0.6); the mass ratio of the diatomite to manganese dioxide is (1:1) to (1:2). The preparation method comprises the following steps: taking natural diatomite as a carrier, sequentially supportinghighly dispersed ferroferric oxide nano-particles and manganese dioxide nanosheets onto the surface of the natural diatomite by virtue of a thermal decomposition reaction and a hydrothermal reaction in an organic solvent medium, thereby obtaining the natural diatomite supported composite ferroferric oxide and manganese dioxide Fenton catalyst. According to the catalyst disclosed by the invention,the manganese dioxide, ferroferric oxide and diatomite are mutually and tightly combined, and a special three-layer structure is formed. The catalyst has the outstanding advantages of being high in dispersity in water, high in adsorptivity, high in catalytic activity and easy to recycle and the like. The preparation process disclosed by the invention is simple in process, simple and convenient tooperate, low in equipment requirements and capable of easily realizing industrialized production.

The invention discloses a new cycling process for preparing iminodiacetic acid from iminodiacetic acid disodium salt by a freezing crystallization method. The method is characterized by comprising the following steps: taking the iminodiacetic acid disodium salt as a starting raw material; adding water and stirring to decolorize and dissolve the iminodiacetic acid disodium salt; adding concentrated sulfuric acid dropwise to control pH at 1.8-2.1; centrifuging to obtain the iminodiacetic acid; adding an alkaline matter to acid pregnant liquor until the pH equals 4-7; separating Na2SO4.10H2O out by crystallization at the temperature of 5-10 DEG C; performing vacuum filtration, and recycling the filtrate to continuously prepare the iminodiacetic acid (IDA), wherein, content and desalination rate of the IDA are above 98%, and the yield is about 97%. The pregnant liquor is not discarded in the production process and the whole process can have a plurality of cycles, thus improving production efficiency and utilization rate of the raw material, and avoiding environmental pollution.

The invention discloses a waterproof starch film taking biodegradable polyurethane as a coating and a preparation method of the waterproof starch film. The waterproof starch film comprises a full-starch-based film material core layer and biodegradable polyurethane coatings on the two sides of the core layer. The biodegradable polyurethane coating is formed in the following mode: (1) fully stirringand reacting polycaprolactone polyol and polyisocyanate under the protection of nitrogen to prepare a prepolymer, then adding a hydrophilic chain extender, a catalyst, a salt-forming agent and a prepolymer solvent into the prepolymer, continuously and fully stirring and reacting, finally dispersing in water, and uniformly stirring to prepare a biodegradable polyurethane aqueous emulsion; and (2)respectively coating two surfaces of the core layer with the biodegradable polyurethane aqueous emulsion, and then drying to form a film so as to form the biodegradable polyurethane coating. The prepared waterproof starch film has good mechanical properties, wet mechanical properties and waterproof properties, and is wide in raw material source, convenient to process, low in production cost and easy to realize industrial production.