64results about How to "Meet industrial application requirements" patented technology

The invention relates to an environmental protection based red mud combination modification synergism fire-retardant polyethylene, and belongs to the technical field of compressive utilization and fire-retardant plastics. The fire-retardant polyethylene is suitable for fire safety protection in important public places in the fields of electric products, building materials and transportation. The fire-retardant polyethylene consists of the following components in percentage by weight: 30 to 35 percent of polyethylene, 34 to 39 percent of red mud, 6 to 13 percent of red phosphorus, 5 to 17 percent of zinc borate, 3 to 8 percent of ethylene-vinyl acetate copolymer, 2 to 7 percent of grafted polyethylene, and 2 to 8 percent of silicone oil. The preparation process comprises the following steps of: grinding and drying the red mud; blending the ground red mud with other raw materials according to the blending ratio; mixing the mixture with polyethylene resin by fully stirring at a high speed; fusing, co-mixing and processing the mixture; and preparing a sample. The processing conditions comprise that: the roll temperature of a double-roller mixing mill is between 140 and 150 DEG C; and the forming temperature of the flat vulcanizing machine sample is between 120 and 130 DEG C, the heating time is between 4 and 8 minutes, and the pressure is between 10 and 20MPa. The fire-retardant system meets the requirements of industrial application on mechanical property, and simultaneously has comprehensive properties such as good fire-retardant effect, low cost, environmental protection and the like; moreover, the application field of the red mud is widened, and the red mud product with high added value is prepared.

The invention provides a pulverized coal molding method without binding agent, which comprises the following steps of: 1. screening pulverized coal with the granularity of not more than 6mm by a screening device, carrying out drying dehydration processing on the pulverized coal and controlling the water content to be 2-15 percent; 2. forcibly compressing and feeding the pulverized coal obtained in the step 1 into a seam between double rollers of a double-roller molding machine by a feeding machine; and 3. running the double-roller molding machine, continuously rotating the double rollers of which at least one roller circular surface is distributed with pits and compacting and molding molded coal by the pits. The invention also provides the double-roller molding machine which is suitable for the method. The invention solves the problem of pulverized coal molding without binding agent of weak caking coal and non-caking coal, such as low-order bituminous coal, middle and old aged lignite, and the like.

The invention discloses a modeling method for generating intelligent Harsh music lyrics. The method includes: completing data cleaning work from the network easy cloud music to form a Harlyric corpus;generating a topic word library based on a corpus; determining lyrics with semantics similar to that of each topic to serve as first sentence candidates of a generation result; extracting pinyin of last 1-5 characters of each sentence of lyric by using initial consonants and vowels of a modern pinyin system; carrying out word segmentation on the lyric data by using an accurate mode of a ghost word segmentation device, and extracting key words of each sentence of lyric; inputting the lyrics into a Word2Vec model to obtain word vectors corresponding to the lyrics; using the obtained word vectors as training data, and using the training neural network model; outputting the rest lyrics by the neural network through a client interface of the webpage; outputting lyrics output by the neural network to an interface of a webpage program; outputting lyrics output by the neural network to an interface of a webpage program by utilizing a client interface of the webpage; and generating corresponding rhyming words and a next sentence of lyrics for reference of a creator.

The invention relates to a dual-function catalyst, a method for preparing the same and application of the dual-function catalyst. The dual-function catalyst comprises metal oxide and alkaline molecular sieves. A mass ratio of the alkaline molecular sieves to the metal oxide is 0.1-10:1. The dual-function catalyst, the method and the application have the advantages that the dual-function catalyst can be used in reaction for preparing styrene from toluene and methanol and jointly producing ethylbenzene and is good in stability, the conversion rate of the toluene which is a raw material can be greatly increased, and the yields of the styrene and the ethylbenzene which are products can be increased.

The invention discloses a manufacturing method of an iron powder core blank and a manufacturing method of an iron powder core. The manufacturing method of the iron powder core blank comprises the following steps: (1) preparing ferrite slurry and metal powder slurry, wherein the ferrite slurry comprises 70% to 95% by weight of ferrite powder and 5% to 30% by weight of binding agent, and the metal powder slurry comprises 70% to 95% by weight of metal powder and 5% to 30% by weight of binding agent; (2) implementing tape casting on the ferrite slurry and the metal powder slurry to form 25mu. m to 50mu. m thick films respectively; (3) overlapping the ferrite tape casting film and the metal tape casting film together to form a compound material film, and implementing prepressing stamping on the compound material film through 300MPa to 400MPa pressure; (4) cutting the compound material film which is subjected to the prepressing stamping; (5) implementing re-pressing stamping on a rough blank; (6) implementing cutting processing on the rough blank to obtain the cylindrical part of the blank. By applying the manufacturing method of the iron powder core blank and the manufacturing method of the iron powder core provided by the invention, the insulation performance and the rust prevention performance of a manufactured iron powder core product are better.

The invention relates to a toluene and methanol shape-selective alkylation catalyst and a method thereof to mainly solve the problem of poor catalyst reaction stability in the prior art. The catalyst comprises the following components by weight: a) 40-90 parts of silicon-aluminum zeolite with a SiO2/Al2O3 mole ratio of greater than or equal to 20; b) 0.1-5.0 parts of a hydrogenation assistant; c) 0-10 parts of a nonmetallic oxide; d) 1.0-30 parts of at least one of rare earth metal oxides or alkali earth metal oxides; and e) 10-60 parts of aluminium oxide or a mixture of silicon dioxide and aluminium oxide. The technical scheme adopted by the invention well solves the problem, and the catalyst can be used in industrial production for synthesis of p-xylene through toluene and methanol shape-selective alkylation.

The invention discloses an yttrium barium copper oxide superconducting thin film mixed with samarium. Chemical composition of the superconducting thin film is YSmxBa2-xCu3Oy, wherein 0

The invention relates to a tin-bismuth-silver series lead-free solder, wherein the solder comprises the following components in mass percentage: the mass ratio of tin to bismuth to silver with the purity of 99.99% is 98.9 to 93:1 to 5:0.1 to 2. At least one or more of 0 to 2 percent of zinc, 0 to 2 percent of copper, 0 to 1 percent of aluminum, 0 to 1 percent of indium, 0 to 1 percent of rare-earth element, 0 to 1 percent of gallium or 0 to 1 percent of phosphorus can also be added. A preparation method comprises the following steps: proportionally preparing raw materials, heating to the temperature of 500 to 1300 DEG C for melting in a vacuum smelting furnace under argon protection, simultaneously carrying out magnetic stirring to enable alloy components to be uniform, and then carrying out water-cooling solidification; then overturning an alloy, then reheating to the temperature of 300 to 600 DEG C for melting, simultaneously carrying out magnetic stirring and water cooling, and repeating for at least five times. On the premise of ensuring the industrial application thereof, the solder alloy with low silver content has lower product cost, and the alloy has lower melting temperature, higher tensile strength and higher microhardness.

The invention discloses an organic-inorganic hybrid 3D printing material and a preparation method thereof. The 3D printing material is prepared from 40-80 parts of a hard monomer, 10-25 parts of a soft monomer, 5-10 parts of a carboxyl group-containing monomer, 10-20 parts of quaternary ammonium salt interlayer modified montmorillonite powder, 0.2-1.5 parts of an initiator and a solvent. The organic-inorganic hybrid montmorillonite/polyacrylate is prepared through free radical polymerization of an acrylate monomer in a montmorillonite interlayer by using an in situ polymerization technology; and the organic-inorganic hybrid montmorillonite/polyacrylate can be used as a 3D printing material to make entire products with excellent mechanical performances and flexibility in order to basically meet present industrial application requirements. The material disclosed in the invention has the advantages of simple preparation process and low production cost.

The invention discloses a preparation method of a water-soluble polyarylether sizing agent and an application thereof; which belong to the technical field of high-performance fiber sizing agents. The preparation method comprises the following steps: mixing phenolphthalein, potassium p-hydroxybenzenesulfonate, 2, 6-dichlorobenzonitrile and potassium carbonate, carrying out temperature programming reaction in a mixed solvent to obtain a polyarylether reaction solution, mixing the polyarylether reaction solution with absolute ethyl alcohol, fully soaking, crushing, heating and washing with absolute ethyl alcohol, and carrying out vacuum drying to obtain polyarylether small molecules; and dissolving in an acetic acid aqueous solution to obtain the water-soluble polyarylether sizing agent. The sizing agent prepared by the invention has the characteristics of good film-forming property, strong adhesive force and outstanding temperature resistance, can solve the problems that the existing high-performance fiber surface sizing agent is easy to decompose at high temperature and is weak in interface bonding and bonding acting force with a thermoplastic resin matrix, improves the comprehensive performance of a fiber reinforced resin matrix composite material, and expands the application field and range of the reinforced resin-based composite material.

The invention belongs to the field of wet metallurgy, and particularly discloses a clean production method for separating manganese and magnesium from a laterite-nickel ore normal-temperature acid leaching liquid employing alkaline oxidation. The technology mainly comprises two processes: alkaline oxidation and dilute acid dissolution. Mn<2+> in a cobalt-nickel solution is oxidized into MnO2 by the oxidability of H2O2 under an alkaline condition; meanwhile, the pH of the solution is adjusted; and participation of Mg in a form of Mg(OH)2 is avoided. The MnO2 has the property of not being dissolved into dilute acid, so that Mn can be separated from the cobalt-nickel solution by a method of dissolving diluted hydrochloric acid. According to the technology, manganese and magnesium in the cobalt-nickel solution can be effectively separated; the manganese and magnesium products and nickel-cobalt hydroxide slag with relatively good quality are obtained; and comprehensive utilization of resources is improved.

The invention discloses a radio frequency band selecting repeater station resisting to self-excitation interference and a method of reducing the self-excitation interference. The radio frequency band selecting repeater station is provided with a field programmable gate array (FPGA) circuit. The FPGA circuit is provided with a band selecting filter, an interference signal estimator, and a gain adjustment module, wherein the band selecting filter receives and outputs initial signals containing original signals and self-excitation interference signals, the interference signal estimator is provided with a decorrelation module and a signal extraction module, the signal extraction module is connected with the decorrelation module and generates approaching signals at an output end of the signal extraction module, an input end of the gain adjustment module receives difference signals formed by subtracting the initial signals and the approaching signals, and the decorrelation module is connected with an output end of the gain adjustment module and removes relativity of output signals. Compared with the prior art, the radio frequency band selecting repeater station does not need high installation cost, can conduct self-excitation treatment on frequency spectrum time-varying global system for mobile communications (GSM) due to the fact that understanding relevant processing treatment is conducted, and has the function of being wide in application range.

The invention relates to the technical field of materials, and discloses a copper-based interlayer alloy and a preparation method thereof, and a composite connecting piece of ceramic and oxygen-free copper and a welding method thereof. The copper-based interlayer alloy comprises the following chemical components in percentage by weight: 22.5-23.5% of Ti, 9.5-10.5% of Sn, 3.5-4.5% of Ni, 0.5-1.0% of Ag, 0.1-0.5% of B, 0.1-0.5 % of Al, 0.01-0.2% of La and the balance of copper. The preparation method of the copper-based interlayer alloy comprises the step that elements are mixed and smelted into an alloy material. According to the welding method of the ceramic and the oxygen-free copper, the copper-based interlayer alloy is adopted for welding an aluminum oxide ceramic base material and an oxygen-free copper base material. The composite connecting piece of the ceramic and the oxygen-free copper is obtained by adopting the welding method. The copper-based interlayer material can be suitable for a direct brazing process, and the performance of a welded joint is good.

The invention discloses a catalyst for a side-chain alkylation reaction of toluene methanol, and a preparation method of styrene. The catalyst comprises: an ordered mesoporous molecular sieve catalystand a methanol oxygen-free dehydrogenation catalyst; and the ordered mesoporous molecular sieve catalyst is doped with alkali metal ions. The catalyst utilizes the better dehydrogenation performanceof the methanol oxygen-free dehydrogenation catalyst to produce a true alkylation reagent formaldehyde, and on the other hand, the alkali metal ion-modified mesoporous molecular sieve catalyst has excellent side-chain alkylation performance, the products styrene and ethylbenzene are obtained, and higher toluene conversion and styrene ethylbenzene selectivity can be obtained. The invention also provides the preparation method of styrene by using the catalyst.

The invention discloses a method for preparing styrene by a coupling reaction of methanol dehydrogenation without oxygen and toluene side chain alkylation. In the method, a raw material gas containingtoluene and methanol is introduced into a reactor and contacted with a bifunctional catalyst, firstly methanol is subjected to a dehydrogenation reaction without oxygen to produce formaldehyde, and then the obtained formaldehyde and toluene is subjected to a side chain alkylation reaction to produce styrene. By the mutual coupling of the two reactions in the method, the toluene conversion, the methanol utilization and the styrene yield can be improved.

The invention discloses a calcium sulfide-based slow-release vulcanizing agent as well as a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing molten paraffin with zeolite particles and calcium sulfide particles, carrying out auxiliary cooling molding through a mold to obtain solid particles, spraying a coating liquid containing ethyl cellulose and stearic acid on the surfaces of the solid particles, and volatilizing a solvent at room temperature to obtain the calcium sulfide-based slow-release vulcanizing agent. The calcium sulfide-based slow-release vulcanizing agent can stably slowly release, vulcanize and deeply precipitate heavy metal ions in an acid solution system, is high in utilization rate, can avoid secondary pollution caused by H2S escape, is particularly suitable for purifying the heavy metal ions in an acid solution, and is simple and efficient in preparation process, low in raw material cost, and large-scale production and application are facilitated.