1211results about How to "Suitable for industrialization" patented technology

The invention discloses a spherical porous silicon/carbon composite material as well as a preparation method and application thereof. The spherical porous silicon/carbon composite material is structurally characterized in that a SiOx/C matrix, graphite with small particle size and a conductive agent are dispersed in porous amorphous carbon, wherein the average particle diameter is 12-25mu m; the method comprises the following steps of carrying out first coating on a SiOx raw material with powder pitch, and performing heat treatment so as to obtain a SiOx/C material; then performing ball milling by use of a wet method so as to reduce the particle diameter of powder, adding a carbon source adhesive, the graphite with the small particle diameter and the conductive agent, and performing high-speed dispersion, thereby obtaining pulp; and finally performing spray granulation and sintering on the pulp, thereby obtaining the final spherical porous silicon/carbon composite material. According to the invention, SiOx is dispersed in cracking carbon, the graphite and the conductive agent, so that SiOx volume expansion during a charge/discharge process is buffered, and the conductibility is enhanced; by virtue of the porous structure, the imbibition rate and cycle performance of the material can be effectively improved; by virtue of bitumencarb coating and high-heat treatment performed in advance, SiOx is prevented from being directly contacted with an electrolyte, and furthermore, the stability and first efficiency of the silicon/carbon material are improved.

The invention discloses a sugar-based quaternary ammonium salt gemini surfactant, which has a general structural formula, wherein a sugar base is a glucose base; R is the long-chain alkyl of C8 to C18; X is chlorine, bromine or iodine; m is equal to 1 to 2; and n is equal to 1 to 2. A synthesis method for the surfactant is simple, comprises the steps of directly synthesizing dihalogenated glycoside and performing quaternization reaction, ensures simple synthesis process and low requirements on equipment and is suitable for industrialization. A sugar-based quaternary ammonium salt structurally has nonionic glucose hydrophilic groups and cationic bisquaternary ammonium salt hydrophilic groups. The product has the bactericidal property, antistatic behavior and hard water resistance of a cationic surfactant, relatively lower irritation, and the high performance of a gemini surfactant as the gemini surfactant, can be compounded with an anionic surfactant to realize synergism, is a multifunctional surfactant, can be widely applied to the industries of textile, papermaking, cosmetics, mining and the like, and has potential application prospect.

The invention relates to a graphene thermal conductive plastic. The graphene thermal conductive plastic comprises, by mass, 60 to 90% of a resin, 1 to 20% of graphene, 5 to 20% of a fire retardant, 1 to 10% of a dispersant, 0.5 to 5% of an antioxidant, 0.1 to 5% of a coupling agent, and 1 to 10% of an auxiliary agent. The invention also provides a preparation method of the graphene thermal conductive plastic. Adding of magnesium oxide, aluminum oxide, and silicon carbide is capable of achieving uniform distribution of grapheme, and increasing thermal conductivity of the graphene thermal conductive plastic.

The invention relates to a preparation method for maleic anhydride-grafted polypropylene. The preparation method comprises the following steps: (1) uniformly mixing 0.4 to 2 parts of an initiator and 0.6 to 2 parts of styrene by weight; (2) adding 110 parts of polypropylene and 0.6 to 2 parts of maleic anhydride by weight into a high-speed mixing machine and mixing for 1 to 3 minutes, and meanwhile dropwise adding the product obtained by the step (1); (3) adding the product obtained by the step (2) into a double-screw extruder, blending, extruding, melting and grafting to prepare the maleic anhydride-grafted polypropylene. Compared with the prior art, the preparation method has short reaction time, simple preparation and low production cost, and is suitable for industrialization; an anti-oxidant is not required to be added; the effective reaction time can be prolonged by controlling the factors, such as the rotating speed of a main machine, the feeding rotating speed, the temperature and the like; meanwhile, the maleic anhydride-grafted polypropylene with high grafting rate can be obtained by adding the styrene, so that the grafting efficiency of maleic anhydride is improved; the preparation method does not have special requirements on the double-screw extruder, a liquid feeding device is not required, and the length-diameter selection range is large.

The invention discloses a preparation method for spherical cobaltosic oxide. The preparation method comprises the steps of mixing a cobalt salt with other trace metal elements; adding a precipitator and an oxidant in a flowing manner to obtain a synthetic product; and subjecting the synthetic product to solid-liquid separation, washing and sintering to obtain the spherical cobaltosic oxide material. The method disclosed by the invention is simple in process and convenient for operation; and the obtained product is uniform in distribution of doping elements, narrow in particle size distribution, good in degree of sphericity, and high in density.

The invention relates to a method to distill glutathione from glutathione fermentation liquid. It uses glutathione fermentation liquid taking centrifuge to gain yeast cell, adjusting pH value, and boiling to distill glutathione in the cell and make the macromolecular substance denaturalization and depositing. Using the positive iron exchange technology to remove small molecule and coloring matter, the white power glutathione that has molecular weight of 307.33, protein content of 23%, and distilling yield 80.5% would be gained. The invention has simple process, high efficient, low cost, high purity, low pollution, etc.

The invention relates to a two-section rotation oxygen-enrichment external heating oxidation technology and device for dry-method and semi-dry method desulfurized ash. A two-section type rotation oxidation kiln is adopted, oxygen is introduced into the kiln and heating is implemented by adopting an external heating furnace, so that the oxidizing process for converting CaSO3 in the desulfurized ash into CaSO4 is completed. Compared with the prior art, the technology and the device have the benefits as follows: (1), during the oxidation of the desulfurized ash in the oxidation kiln, stable oxidation time, balanced oxidation temperature, sufficient oxygen content and appropriate oxidation atmosphere are realized, the technical measures such as automatic control, surplus heat utilization, dust removal and environment protection are adopted, so that the low-cost oxidation and industrialized production are realized; (2), the provided systematic desulfurized ash oxidation production line is suitable for the industrialized and large-scale production requirements; (3), the processing parameters such as oxidation temperature, time and oxygen content are controlled through a PC (Personal Computer), so that the appropriate oxidation conditions are ensured; (4), the promotion of the development of a dry-method and semi-dry method desulfuration technology is facilitated; (5), the resource utilization of the desulfurized ash is realized, and the energy conservation, emission reduction and environment protection are facilitated.

The invention provides a machine vision-based elevator compensation chain place-R crack detection method. The method includes the following steps: (1) collecting an image which is a chain place-R crack image, and carrying out partitioning on the image, wherein image partitioning comprises threshold segmentation for extracting a centerline of an elevator compensation chain and a place-R area, whichcontains to-be-detected defects, to obtain a to-be-detected target area image of the place-R area; (2) carrying out corresponding local enhancement, filtering and noise removal and edge extraction onthe to-be-detected target area image, which is collected in the step (1), of a place R, and then carrying out area enhancement processing on the place R to obtain an ROI area image; (3) carrying outthreshold segmentation, open operation and morphological feature extraction on the ROI area image obtained in the step (2), primarily determining the defects thereof, and extracting candidate defect images; and (4) carrying out secondary determination on the candidate defect images, which are obtained in the step (3), according to location features to obtain a final defect image determination result. According to the method, an automation degree is higher, detection is accurate, and detection efficiency is high.

The invention relates to modified PET (Polyethylene terephthalate) polyester as well as a preparation method and application thereof, and belongs to the field of modified polyester. The modified PET polyester comprises aerogel particles and polyethylene terephthalate; the aerogel particles are dispersed between the molecular chains of the polyethylene terephthalate uniformly; the particle size of the aerogel particles is 2 to 3 microns; the content of the aerogel particles in the modified PET polyester is 1 to 10 percent by weight. Modified PET is prepared by the steps of adding the aerogel powder into glycol, putting into a grinding machine, grinding to prepare mixed slurry, mixing the mixed slurry and terephthalic acid, and performing esterification reaction and polymerization reaction. Modified PET fiber is prepared by slicing the modified PET, metering, spinning, cooling, applying oil, stretching, performing heat setting and performing winding formation. The aerogel particles are introduced before polymerization of the PET polyester, so the prepared PET has high spinnability, can produce modified PET fibers with various thickness, has wide application range and can meet the production requirement of various fabrics.

A preparation method of a fluorescent carbon quantum dot probe for detecting beryllium in water comprises the following steps: preparing a citric acid solution with a concentration of 0.04 g/ml; weighing urea, adding the urea into the above citric acid solution, uniformly stirring to obtain a mixed solution, wherein the urea concentration is 0.01-0.04 g/ml; transferring the above mixed solution into a hydro-thermal reaction vessel, reacting at 200-240 DEG C, naturally cooling the reaction vessel to room temperature to obtain a brown aqueous solution; performing centrifugation by a centrifuge and dialysis in order of the brown aqueous solution, then concentrating the brown aqueous solution by a rotary evaporator, and finally drying in a vacuum drying oven to obtain a solid viscous substance. The product of the invention makes use of the fluorescence characteristic of carbon quantum dots; detection of beryllium ion content is carried out by a fluorescence spectrophotometer, which is low in cost; the sample preparation and treatment steps are simple and easy to operate; the detection selectivity and sensitivity are high; the product of the invention is widely applicable to beryllium ion detection.

The invention discloses a cool water dispersible lutein microcapsule. The lutein microcapsule comprises lutein powder used as core material, modified starch and natural colloid used as wall material, and appropriate amount of emulsifier added, which are mixed and added with proper amount of water, heated and stirred, and then filtered and spray dried to obtain the lutein microcapsule. The invention has easy material acquiring, can be applied to food or pharmaceutical industry, and has good safety without using organic solvents thus the nature of the lutein is well kept. In the invention, the core material and the wall material are mixed directly in one step, and emulsified by controlling the temperature; the lutein liquid is embedded into semi-permeable or hermetic solid microcapsule powder by adopting spay drying. The obtained microcapsule powder has good water-solubility, high stability and encapsulation rate.

The invention relates to a toughening and waterproof starch plastic and a preparation method thereof. A formula of the toughening and waterproof starch plastic comprises 1-47% of starch, 0.2-24% of plasticizer, 24-93% of polylactic acid, 5-40% of thermoplastic polyurethane and 0.1-4% of antioxidant. The toughening and waterproof starch plastic is prepared by the preparation method comprising the following steps: mixing starch and plasticizer according to a proportion, mixing for 3 minutes in a high-speed mixer, extruding with a double-screw extruder, cooling the product and pulverizing to obtain thermoplastic starch; and mixing the thermoplastic starch, polylactic acid, thermoplastic polyurethane and antioxidant according to a proportion, and kneading for 10-15 minutes in a kneading machine till the materials are mixed uniformly, thus obtaining the toughening and waterproof starch plastic. The toughening and waterproof starch plastic has the advantages of simple preparation process, good toughness, good water resistance, low cost, degradability, environmental friendliness in the production process and the like.

The present invention relates to a method capable of using diphosgene or triphyosgene to chlorinate 4,6-dihydroxypyrimidine to obtain 4,6-dichloropyrimidine in the presence of proper alkali and a certain solvent or mixed solvent.

The method includes steps: setting up seal grooves and hole for injecting glue run-through seal grooves on two faces on two sides of the bipolar plate, and arranging air outlets on seal grooves; based on shape of structure of bipolar plate, preparing a pair of mold, which possesses cavity in shape of seal ring and opening for injecting glue corresponding to the said grooves and hole on the bipolar plate; clamping the bipolar plate in middle of the pair of mold, and injecting sealing material to the opening on the mold; after sealing material is solidified, breaking the mold obtains sealing unit. Raising work efficiency, the method is suitable to industrialized production. Features are: better sealability of sealing unit, raised working accuracy and qualification rate.

The invention relates to a preparation method of lithium nickel cobalt manganate composite material coated with lithium iron phosphate on the surface and the lithium nickel cobalt manganate composite material has good cycle property and high safety. According to the method, lithium nickel cobalt manganate is subjected to surface coating modification in a way that a hydrothermal method is adopted to grow lithium iron phosphate on the surfaces of the lithium nickel cobalt manganate particles. The lithium iron phosphate is an active cathode material for lithium ion batteries and has better thermal stability, chemical stability, cycle performance and safety performance than lithium cobaltate, lithium nickel cobalt manganate, lithium manganate and the like, so that the problem about safety of the lithium ion batteries made of lithium nickel cobalt manganate under the conditions of high temperature, over-charging and needling can be effectively solved. The composite material is high in energy density, good in cycle performance and safety performance and simple in preparation technology and can be put into industrialization easily.