328results about How to "Suitable for industrial continuous production" patented technology

The invention discloses an extrusion foaming thermoplastic polyurethane elastomer bead. The extrusion foaming thermoplastic polyurethane elastomer bead comprises the following components in parts by weight: 100 parts of thermoplastic polyurethane elastomer, 0.01-0.5 parts of a foaming nucleating agent, and 0.01-0.2 parts of an antioxidant, wherein a foaming process adopts supercritical fluid with the addition amount of 1-40 parts. The invention also discloses a preparation method of the extrusion foaming thermoplastic polyurethane elastomer bead. The extrusion foaming thermoplastic polyurethane elastomer bead and the preparation method have the advantages that the foaming process does not cause environmental pollution; the obtained foaming material is stable in quality and high in foaming ratio; and the operation method in production is easy and suitable for continuous industrial production.

The invention discloses a 2,2,6,6,-tetramethyl-4-piperidone continuous synthesis method. The 2,2,6,6,-tetramethyl-4-piperidone continuous synthesis method comprises the following steps of 1, filling an acidic resin into a fixed bed reactor, and carrying out heating so that a temperature of the fixed bed reactor is in a range of 40 to 70 DEG C, and 2, feeding acetone and ammonia gas into the fixed bed reactor according to a mole ratio of 3-9: 1 under the conditions of acetone hourly space velocity of 0.15 to 1.17h<-1> and ammonia gas hourly space velocity of 5.25 to 124.20h<-1>, and cooling the product to obtain a 2,2,6,6,-tetramethyl-4-piperidone crude product. The 2,2,6,6,-tetramethyl-4-piperidone continuous synthesis method has simple processes and a low cost, is suitable for industrial continuous production, does not adopt an organic solvent or water as a solvent, avoids the pollution produced by the organic solvent on the environment, has mild reaction conditions, can be carried out at a temperature of 40 to 70 DEG C, has low energy consumption, and avoids the influence caused by impurities produced at a high temperature on the product.

The invention relates to a carbon fiber reinforced nylon 6 resin composite material with excellent heat conducting performance and a preparation method thereof. The composite material consists of the following materials in parts by weight: 100 parts of nylon 6 resin, 20-80 parts of carbon fiber, 10-20 parts of inorganic filling material, 0.5-5 parts of coupling agent, 0.2-1 part of antioxidant and 0-3 parts of lubricating agent. The preparation method comprises the following steps: weighing each component raw material in proportion; mixing each component raw material except for the carbon fiber at a high speed; adding an obtained mixed material into a double-screw extruder hopper, adding the carbon fiber from a fiber charging opening of the extruder, and then extruding and pelletizing. Compared with the prior art, the composite material provided by the invention is high in rigidity and good in heat conducting performance, is suitable for production and processing of thin-walled and light-weight automobile parts and electronic/electrical products; meanwhile, the composite material is low in raw material cost and simple in manufacturing process, and is suitable for industrial continuous production.

The invention relates to the technical field of a lithium ion battery, in particular to a preparation method of a spherical hard carbon negative electrode material of a high-capacity lithium ion battery. The preparation method is characterized by comprising the following steps of (1) material mixing; (2) precrosslinked polymerization reaction; (3) crushing and grading; (4) polymer powder pelletizing treatment; (5) oxidation stability treatment; (6) pre-carbonization treatment; (7) carbonization treatment. Compared with the prior art, the preparation method has the advantages that the raw material sources are wide; the preparation process is simple; the structure and the processing performance of a precursor organic carbon source can be effectively improved through the precrosslinked polymerization reaction; the prepared spherical hard carbon has unique appearance and good pore diameter distribution, and also has the advantages of particle granularity distribution uniformity, high stacking density and the like; high capacity, high first coulombic efficiency, excellent high-rate performance and excellent circulation performance are also realized.

The invention relates to a method for extracting sea buckthorn seed oil through a subcritical fluid method. The method for extracting the sea buckthorn seed oil comprises the following steps: (1), juicing fresh clean sea buckthorn fruit to obtain seeds, drying the seeds in shade under a room temperature, selecting the seeds, smashing the selected seeds, and screening the smashed seeds to obtain a raw sea buckthorn seed material; (2), grinding and drying the raw sea buckthorn seed material; (3), putting the ground dry sea buckthorn seeds and an extracting agent into a subcritical fluid extraction device, so as to obtain an extract; and (4), separating the extract through a pressure reducing and temperature increasing method to obtain an extraction liquid, and standing the extraction liquid under the room temperature to obtain the sea buckthorn seed oil. The method has the advantages that the production cost is effectively reduced; the separation time is shortened; the solvent consumption and the energy consumption in the technological process are reduced; the technological process is simple; the operability is high; the extraction efficiency is high; environmental protection and zero contamination are realized; the security and the repeatability are good; and large-scale industrialized continuous production can be realized.

The invention discloses a polylactic resin composition with high heat resistance and high flexibility and a preparation method of the composition, solving the problem that polylactic resin with high heat resistance and high flexibility does not exist in the prior art. The polylactic resin composition consists of the following components in parts by weight: 50 to 99.5 weight parts of poly-L-lactic acid homopolymer and 0.5 to 50 weight parts of poly-D-lactic acid copolymer, wherein the poly-D-lactic acid copolymer is prepared from poly-D-lactic acid and a polymer with a flexible chain structure. The invention also provides the preparation method of the polylactic resin composition with high heat resistance and high flexibility. The preparation method is simple and suitable for industrialized production; and the prepared polylactic resin composition has high flexibility and heat resistance, the elongation at break reaches 16 percent, the notch impact strength reaches 12.2kJ/m<2>, and the vicat softening temperature reaches 113 DEG C.

The invention discloses a fiber-rich wet extrusion plant meat and a preparation method thereof. According to the preparation method, soybean protein and vital gluten are used as main raw materials, a certain content of citrus fibers is added, and the plant meat is prepared in a twin-screw extrusion mode. When the vegetable protein artificial meat is prepared, the vegetable protein artificial meat is prepared by mixing the following raw materials in parts by weight: 40-80 parts of soybean protein, 40-80 parts of vital gluten and 1-40 parts of citrus fibers. The method has the advantages that the citrus fiber is a raw material with a label cleaning function, and is high in water binding capacity, easy to obtain, low in energy consumption and low in processing amount; the soybean protein has good gelling property, so that the protein is relatively high in plasticity; the vital gluten has a certain promotion effect on the improvement of texture and the rigidity and chewiness of the finished product; and the preparation process adopts a twin-screw extruder, and is simple, easy to operate and suitable for industrial continuous production.

The invention discloses a method for preparing m-xylylenediamine. The method includes the following steps that: a fixed-bed hydrogenation reactor is adopted, and isophthalonitrile is dissolved in organic acid amide solvent, and then enters a bed containing catalyst in the form of solution to react with hydrogen under the conditions of the reaction temperature of 50 DEG C to 100 DEG C, preferably 70 DEG C to 90 DEG C, and the reaction pressure of 5MPa to 10 MPa, preferably 7MPa to 8MPa, so that the m-xylylenediamine is prepared. Xylyl diisocyanate (XDI) can be directly prepared by the liquid phase salifying phosgenation method without refining and separating the prepared m-xylylenediamine reaction liquid; the method improves the prior XDA production technique, energy is saved, emission is reduced, the reaction conditions are mild, selectivity is high, the prepared m-xylylenediamine can be directly used for phosgenation reaction without being refined and purified.

The invention discloses a method for preparing tungsten-copper alloy by low-temperature sintering of a tungsten skeleton. The method comprises the steps of carrying out wet grinding on tungsten powder of which the purity is 99.9% and the particle size is 1-7 mum and WOx powder which accounts for 5%-20% of the total mass of the powder and of which the particle size is 1-15 mum, uniformly mixing, drying and sieving, carrying out isostatic pressing on the mixed powder to obtain a green compact, sintering the green compact to obtain the tungsten skeleton, calculating the copper infiltration amount, cutting a copper plate of which the purity is greater than 99.5% into copper sheets with the same surface size as that of the tungsten skeleton, placing the copper sheets on the tungsten skeleton, feeding into a tubular furnace, heating to 1200-1400 DEG C under hydrogen atmosphere and carrying out copper infiltration. The content of copper in the tungsten-copper alloy is 15wt%-40wt%, and the balance is tungsten; the tungsten-copper alloy has more than 98% of density and the tungsten-copper alloy is suitable for being used as an electrical contact and electrode material, an electronic packaging material, a high-temperature sweating materials and the like.

The invention relates to the technical field of lithium ion batteries, and in particular to a method for preparing a high-capacity hard carbon negative electrode material of a lithium ion battery. Themethod comprises the following steps: preparing carbon source precursor powder; mixing the carbon source precursor powder with an oxidant; performing a low temperature oxidation reaction and a high temperature oxidation reaction on the mixture in sequence; and performing a pre-carbonization treatment and a carbonization treatment. Compared with the prior art, the method provided by the inventionhas the advantages that organic carbon sources such as resin and asphalt or the like can be widely used as a base material for hard carbon synthesis, so that the raw material source is wide,and it isconducive to reducing the production cost to a certain extent; furthermore, the preparation process is simple, the conditions are mild and controllable, which is conductive to improving the product batch stability and is suitable for industrial continuous production; and the prepared high-capacity hard carbon negative electrode material has high discharge capacity and first charge and discharge efficiency, and a button battery made of the high-capacity hard carbon negative electrode material has excellent comprehensive performance.

The invention relates to a carbon fiber reinforced thermoplastic resin composite material and a preparation method of the carbon fiber reinforced thermoplastic resin composite material. The carbon fiber reinforced thermoplastic resin composite material comprises the following raw materials in parts by weight: 100 parts of PBT resin, 20-80 parts of asphalt-based chopped carbon fiber, 10-20 parts of inorganic filler, 0.5-5 parts of a coupling agent, 0.2-1 part of an antioxidant and 0-3 parts of a lubricating agent. Compared with the prior art, the composite material provided by the invention has the advantages of high rigidity, good heat-conducting property, low raw material cost, simple preparation process, is suitable for production and manufacturing of thin-wall and lightweight car parts and electronic/electric products and is suitable for industrial continuous production.

The invention provides a method for extracting apramycin, comprising the following steps: purifying a Streptomyces tenebrarius broth for producing carbamoyltobramycin through a cation resin to obtain a rough solution of carbamoyltobramycin containing apramycin; carrying out hydrolysis to obtain a rough solution of tobramycin containing apramycin; and then purifying through the apramycin to obtain an apramycin solution. According to the method, a by-product apramycin can be extracted while apramycin is produced from the Streptomyces tenebrarius broth, thus utilization rate of the by-product in the production process of tobramycin is raised, and simultaneously the production cost of the product is reduced, and the environmental protection risk is reduced.

The invention discloses an aircooled crushing device of molten steel slag. The device comprises a rolling crushing chamber (1), a rolling crushing device (2), a slag pushing device (3), a traveling trolley (4) and an afterheat recycling device (5), wherein the rolling crushing device (2) and the slag pushing device (3) are positioned on the traveling trolley (4); and the traveling trolley (4) moves in the rolling crushing chamber (1) along rails on the two sides of the rolling crushing chamber (1). An aircooled crushing method comprises the following steps of: pouring the molten steel slag into the rolling crushing chamber (1); blowing normal-temperature air with an air supply device (5-1) to cool the molten steel slag; crushing big steel slag of which the surface is crusted into small steel slag with the rolling crushing device (2), and turning the molten steel slag under the hard crusts to the surfaces at the same time so as to improve the heat exchange efficiency; repeatedly performing air cooling and crushing on the steel slag until the temperature of the steel slag is cooled to certain temperature, wherein the normal-temperature air is heated at the same time and enters the afterheat recycling device (5) for power generation, heat supply and the like; and pushing cooled blocky steel slag to a slag groove through a chute by using the slag pushing device (3), and stabilizing the blocked steel slag.

The invention relates to a method for preparing a Fe-Si alloy thin plate, in particular to a method for preparing Fe-5.5wt.%-6.5wt.%Si high silicon steel thin plate with excellent soft magnetic properties through the gas power spraying (cold spraying) technology. According to the method for preparing the high silicon steel thin plate through gas power spraying, gas power spraying is adopted for spraying micron-order Fe-23wt.%-40wt.%Si alloy micro powder on one face or double faces of a low-silicon steel thin plate, then high temperature diffusion treatment is carried out in a hydrogen gas reduction atmosphere, Si atoms in an Si coating are inwards diffused to permeate into a low-silicon steel base until the Si content in the base reaches 5.5wt.%-6.5wt.%, the high silicon steel thin plate with the excellent soft magnetic properties is obtained, and the using requirement of high-performance iron core materials is met. According to the method, the coating preparation rate is high, the working efficiency is high, the quality in the preparing process is controllable, and therefore the method is particularly suitable for industrial application.

The invention relates to a method for extracting nitraria seed oil from subcritical fluid. The method comprises the following steps of: (1) squeezing juice of fresh and clean nitraria fruit, drying the obtained seed at room temperature in the shade and sequentially carrying out sorting, crushing and sieving to obtain nitraria seed raw materials; (2) milling and baking the nitraria seed raw materials to obtain treated nitraria seed; (3) carrying out continuous extraction through putting the treated nitraria seed and extracting agents into an extraction kettle of a subcritical fluid extraction device to obtain extracts; and (4) using a pressure reduction temperature rise method for separating the extracts to obtain extraction liquid and carrying out still standing on the extraction liquid at room temperature to obtain the nitraria seed oil. After the method is adopted, the production cost is effectively reduced, the extraction and separation time is shortened, the solvent consumption and the energy consumption in the technical process are reduced, in addition, the technical flow process is simple, the operability is high, the extraction efficiency is high, the environment is protected, the pollution is avoided, the safety and the repeatability are good, and the large-scale industrial continuous production can be realized.

The invention discloses a production method and a production system of low-volatile vinyl silicone oil. A centrifugal extraction technology is introduced into a synthesis process of vinyl silicone oil, and the vinyl silicone oil is centrifugally extracted to reduce the content of a siloxane ring body. The vinyl silicone oil obtained by centrifugal extraction is taken into a thin film evaporator toremove a solvent to obtain the low-volatile vinyl silicone oil; the solvent obtained by centrifugal extraction is recovered by using a rectifying tower. According to the production method and the production system of the low-volatile vinyl silicone oil, the volatile of vinyl silicone oil is reduced from 0.8wt. % and higher to within 0.1wt. %, equipment costs and production energy consumption arereduced, a production cycle is shortened, and materials can be recycled. At the same time, by changing extraction conditions, solvent types and ratios, the volatile content of products can be easily and accurately controlled and the low-volatile vinyl silicone oils with different quality requirements is produced.