36results about How to "Great industrial value" patented technology

The invention provides a flake-shaped nitrogen and phosphorus co-doped porous carbon material. The flake-shaped nitrogen and phosphorus co-doped porous carbon material is prepared by the following method: mixing aniline and phosphonitrilic chloride trimer and sealing and reacting for 2h to 24h under the conditions that the pressure is 1MPa to 10MPa and the temperature is 140 DEG C to 260 DEG C; then releasing pressure to normal pressure and drying by distillation to obtain a solid substance; under the protection of inert gas, carrying out high-temperature treatment on the solid substance at 400 DEG C to 1000 DEG C for 1h to 6h, so as to obtain a finished product. The flake-shaped nitrogen and phosphorus co-doped porous carbon material provided by the invention has excellent electric properties and can be used for preparing a capacitor electrode, especially a super-capacitor electrode, so that the material can be used for a capacitor, especially a super-capacitor, and has extremely great application potential and industrial value in the field of energy storage.

The invention discloses a novel method of preparing 2-nitro-4-methylsulfonyl benzoic acid. The target product which is 2-nitro-4-methylsulfonyl benzoic acid is prepared by carrying out reaction by adopting an oxidation reaction device with a self-priming stirrer, wherein 2-nitro-4-methylsulfonyltoluene is used as the raw material, sulfuric acid is used as a reaction medium, a transition metal oxide is used as the catalyst, and oxygen is introduced in the course of reaction. The method provided by the invention has the advantage that the reaction condition is easy to control, the production cost is low, and the amount of the generated three wastes is reduced.

The process of preparing symmetric tetrachloro pyridine includes the chlorination reaction of chloro pyridine containing 1-3 chlorine atoms and chlorine at 170-250 deg.c in the presence of iron powder or Lewis acid as catalyst for 8-48 hr. The preparation process uses chlorine in the liquid phase chlorination reaction to chlorinate chloropyridine, dichloropyridine, trichloropyridine, etc, and has single pass conversion rate up to 97 %, simple technological process, low production cost and excellent industrial application value.

The invention belongs to the field of titanium alloy materials, and discloses a double-scale structure titanium alloy based on in-situ whisker strengthening and toughening and a preparation method and application of the double-scale structure titanium alloy. The titanium alloy comprises elements including, by atomic percent, 58%-70% of Ti, 9%-16% of Nb, 4%-9% of Cu, 4%-9% of Ni, 2%-8% of Al and 0.5%-3% of B. According to a microstructure of the titanium alloy, part of ultra-fine grain fcc MTi2 is distributed along a micron grain bcc beta-Ti base body grain boundary in a long-strip-shaped manner, part of ultra-fine grain fcc MTi2 is distributed in the micron grain bcc beta-Ti in a long-strip-shaped manner, ultra-fine grain in-situ TiB whiskers are distributed in the ultra-fine grain fcc MTi2 and a micron grain bcc beta-Ti of the grain boundary, and M is equal to Cu and Ni. The fine-needle-shaped in-situ TiB whiskers are introduced in a double-scale structure of an ultra-fine grain second phase and a micron equiaxed grain base body, and further strengthening and toughening of the material are achieved.

The invention discloses a method for preparing a nano fiber composite material containing PMMA (Polymethyl Methacrylate). The method comprises the following steps: (1) after drying nano PMMA at 70-90 DEG C and adding the nano PMMA into a solvent; and uniformly agitating under a sealed condition at 60 DEG C and dissolving to obtain a PMMA solution; (2) adding a fluorine-containing high-molecular polymer and agitating at a room temperature for dissolving to obtain a nano PMMA/fluorine-containing high-molecular polymer solution; (3) adding an ethanol solution into nano oxide particles and carrying out ultrasonic vibration; (4) adding a dispersed nano oxide solution into the PMMA/fluorine-containing high-molecular polymer solution to obtain a spinning solution; and (5) uniformly coating at least one face of a structural layer fiber fabric with the spinning solution by an electrostatic spinning technology to form the nano fiber composite material containing the PMMA. According to the method, raw materials are easily available; the obtained nano fiber composite material has high mechanical strength, excellent heat stability, excellent weather resistance, high porosity and good light transmission and ventilation performances, has a function of blocking superfine particles and has very great application and industrialization values.

The invention discloses a method for preparing CA (cellulose acetate) nanofiber composite. The method includes the following steps: preparing a CA solution; adding zinc salt and ferric salt; preparing a gelatin solution; adding copper salt and zinc salt; performing double-nozzle electrostatic spinning by adopting the CA solution and gelatin solution as the spinning solution; uniformly coating at least one surface of the structural layer fiber fabric with the spinning solution; then placing the fabric in glutaraldehyde steam for fumigation; carrying out fluoridation so as to obtain the CA nanofiber composite. According to the invention, the raw materials are easy to obtain, firstly, CA and the gelatin are combined, and then through fluorination, so that the nanofiber composite keeps higher mechanical strength, excellent heat stability and weather resistance, in addition, the combination of CA with gelatin achieves higher porosity as well as good light transmission and ventilation, so that the composite is good in affinity with the human body, is environment-friendly, can efficiently obstruct ultrafine particles, and has great application and industrialization value.

The invention relates to high-damping halogen-free pouring sealant and a preparation method thereof. The high-damping halogen-free pouring sealant is obtained by the following method comprising the following steps of: uniformly mixing diluents, filler, foam magnesium damping agent, plasticizer, coupling agent, pigment and epoxy resin in proportion to obtain a component A; and uniformly mixing the component A with curing agent in proportion to obtain the high-damping halogen-free pouring sealant. According to the high-damping halogen-free pouring sealant and the preparation method thereof disclosed by the invention, the pouring sealant, which is prepared by using foam magnesium as damping agent and adopting the halogen-free material, has a higher loss factor and damping performance, good damping and noise-reducing performances and small moisture adsorption; moreover, high-damping halogen-free pouring sealant satisfies the halogen-free equipments and is larger in industrial practical value.

The invention discloses a CSP LED with a round light-emitting surface and a processing method of the CSP LED. An LED chip is positioned by a carrier film, and single fluorescent films are placed on the LED chip and are pasted and fixed one by one. Different from a package process of a CSP LED having a square and downwards-facing light-emitting surface in the prior art, mass and automation mass ofthe CSP LED with the round light-emitting surface is achieved by a package method allowing the light-emitting surface to face upwards; compared with the CSP LED with the square light-emitting surface,the CSP LED with the round light-emitting surface is good in visual effect, and grading is convenient; the technical blank of the CSP LED with the round light-emitting surface is filled up, the product is good in optical effect, wide in application range, novel and unique in processing method, high in production efficiency and high in yield and has great industrial value and economic value, and the CSP LED with the round light-emitting surface is suitable for the CSP LED and the package process thereof.

The invention provides a preparation method of an asymmetric hollow fiber membrane, which comprises the following steps: preparing a membrane casting solution, and extruding the membrane casting solution into a molded product through a die head, performing split-phase curing on the molded product, and performing quenching treatment to obtain a green film; then extracting a solvent system in the green film by using an extracting solution at the extraction temperature of 40-80 DEG C and the concentration of the extracting solution in the extraction process is not lower than 90%, so that the solvent system can be removed from the green film only by 1-4 hours; performing low-temperature drying and high-temperature shaping on the original membrane to obtain a hollow fiber membrane; according to the method, in the process of preparing the hollow fiber membrane, the extraction time can be shortened, and the extraction quality can be ensured, so that a solvent system can be completely removed from membrane filaments by the extract liquor within a relatively short time, and the economic benefit is ensured; meanwhile, it can be guaranteed that the finally prepared hollow fiber membrane has long plasma permeation time, and the plasma permeation time is at least 48 h; and the membrane also has high gas mass transfer rate and large mechanical properties, and is especially suitable for being used as a blood oxygenation membrane.

The invention belongs to the technical field of nonferrous metal processing, and discloses a method for preparing a titanium-based composite material by sintering pre-dispersed graphite composite titanium hydride and the prepared composite material. Specifically, titanium hydride powder and graphite powder are used as raw materials to form a TiC reinforced titanium-based composite material by powder metallurgy. The method comprises the following steps that firstly, the graphite powder is pre-dispersed by using polyvinylpyrrolidone; and then, the graphite powder is attached on the surface of titanium hydride for sintering formation, so that such problems as powder agglomeration and weak alloy performance caused by direct physical mixing of the titanium hydride and the graphite powder are solved. The tensile strength of the obtained TiC reinforced titanium-based composite material can be 535 MPa; the elongation after fracture can be 10%; the optimized wear volume is reduced by 15% compared with pure titanium; compared with a titanium-based composite material prepared by using titanium hydride as a raw material reported in the literature, the breakthrough in greatly improving the tensile plasticity is realized; and the method can be applied to the preparation of high-strength parts or wear-resistant structural parts in the fields of aerospace, armored cars, weapons, ships and automobiles.

The invention belongs to the technical field of metal surface treatment and corrosion protection, and particularly relates to chromium-free pre-passivating liquid for hot-galvanized steel pipes. The chromium-free pre-passivating liquid is prepared from following components in percent by weight: 5%-10% of a film forming agent, 2%-4% of an oxidizing agent, 2%-4% of an organic corrosion inhibitor, 2%-4% of an inorganic rare earth corrosion inhibitor, 0.5%-2% of a water quality stabilizer, 0.5%-2% of a base material wetting agent and the balance water. A preparation method of the chromium-free pre-passivating liquid includes the steps that the film forming agent, the oxidizing agent, the inorganic rare earth corrosion inhibitor and the water quality stabilizer are dissolved in the water, the materials are stirred, then the organic corrosion inhibitor and the base material wetting agent are added, and the materials are evenly stirred. The chromium-free pre-passivating liquid does not contain chromium and other toxic and harmful substances, the high-temperature stability of tank liquor of the chromium-free pre-passivating liquid is good, the appearances of the pre-passivated hot-galvanized steel pipes are bright, the inner walls of the pre-passivated hot-galvanized steel pipes are well resistant to white rust, and the chromium-free pre-passivating liquid can replace chromic anhydridefor pre-passivating.

The invention relates to a second structure strengthening based austenitic alloy, which comprises the following chemical components by mass percentage: 50-75 of Fe-Cr-Ni alloy powder and 25-50 of Co based alloy powder. The preparation method of the austenitic alloy mainly includes: mixing the Fe-Cr-Ni alloy powder with the Co based alloy powder evenly; loading the alloy powder into a graphite die,conducting spark plasma sintering under a pressure of 30-50MPa and a temperature of 1000-1150DEG C, and controlling the heating rate at 50DEG C/min, the sintering heat preservation time at 5-20min, and the sintering vacuum degree at less than or equal to 8Pa, and then performing furnace cooling, thus obtaining the second structure strengthening based austenitic alloy. The method provided by the invention has the characteristics of simple process, short flow, low production cost, energy saving and environmental protection. The prepared austenitic alloy not only has good room temperature strength and plasticity, but also can maximumly avoid performance deterioration caused by crystal grain growth.

The invention provides a method for preparing butene and butadiene by catalytic dehydrogenation of butane. According to the method provided by the invention, a dual active component composite catalystcontaining zirconium and gallium is used, high-efficiency dehydrogenation is performed on the butane, the selectivity of the butadiene in the product reaches 17 %, the selectivity of the total butenereaches 81.5%, and the catalyst shows good stability and reproducibility at high temperatures.

The invention discloses a modification method based on an unmanned cargo barge and a modified bottom-sitting full-turn lifting barge. The transformation method is as follows: cut off the section of the parallel mid-body cargo hold area of ​​the unmanned cargo barge, and combine the two front and rear sections of the cargo barge after the parallel mid-body section is cut off to form the main hull of the bottom-mounted lifting barge , and take reinforcement measures for the part of the main hull of the bottom-mounted lifting barge; add engine room, pump room, ballast tank, ballast system and oil-water tank below the main deck; set up a main crane at the tail above the main deck, and add a Chimney, forecastle and deckhouse; additional positioning anchor system and outfitting equipment. Transforming the unmanned cargo barge into a bottom-mounted full-slewing crane barge can not only meet the operation requirements of different lifting weights and different lifting heights for offshore floating lifting operations, but also meet the rescue and salvage of ships stranded and wrecked in shallow water reef areas Or the bottom-mounted lifting operation requirements of special engineering projects such as wind power equipment installation in coastal shoal waters, the project is widely applicable.