45results about How to "Impurities are simple" patented technology

The invention relates to a luminous metal-organic framework material with a chemical sensing function, a preparation method of the luminous metal-organic framework material, and an application of the material in detection of nitrobenzene organic matters. The preparation method comprises the following steps of: dissolving 5-(4-pyridyl)-1, 3-phthalic acid and zinc salt into an organic solvent in a certain proportion; and then synthesizing in a solvothermal way so as to obtain the luminous metal-organic framework material. The preparation method is simple in preparation process, high in material purity and excellent in stability. The synthesized metal organic framework material has the maximum emission wavelength of 381nm in water, and the fluorescence intensity of the synthesized metal organic framework material is gradually reduced as the unceasing increase of the concentration of the nitrobenzene organic matters, therefore, the material can be well applied to the detection of the nitrobenzene organic matters, and has the advantages of being fast in speed, simple, convenient, great in selectivity, high in sensitivity, etc.

The invention discloses a preparation method for high-gel stable isolated soy protein, and relates to a modified processing technology for isolated soy protein. Industry common problems that gel-type isolated soy protein produced by present soy protein production enterprises has low gel stability in storage and transportation, particularly ocean transportation, the quality of final products is remarkably reduced, great economic loss is brought to the enterprises and the like are solved. In the preparation method, specific reaction conditions are adopted, particularly a unique step-type covalent modification reaction is utilized, namely the high-gel stable isolated soy protein is prepared by reacting at a high temperature and high humidity first and then reacting at a low temperature and low humidity. Compared with the common isolated soy protein under the same condition of the storage period of 6 months, the high-gel stable isolated soy protein prepared by the preparation method has the advantages that: the gel performance is only reduced by 17 to 20 percent, and the gel stability is improved by 31 to 35 percent. The invention has the advantages that: the preparation process is simple, easy to operate, short in period, and suitable for industrial production; complex equipment is not required; and the product performance obviously improved.

The invention provides wax used for microelectronic products, and a preparation method thereof; the wax comprises the following components: Brazil wax, rosin, cera flava, Carnanba wax and microcrystal wax, wherein, the weight percent of Brazil wax is 30 percent to 40 percent, the weight percent of rosin is 10 percent to 15 percent, the weight percent of cera flava is 10 percent to 15 percent, the weight percent of Carnanba wax is 10 percent to 15 percent, and the rest is microcrystal wax; the wax is prepared with non-toxic environment protective raw materials, is good for maintaining the health of production operators and not inflammable, has good safety, and is convenient to be used and transported; during the production process, the automatic control and adjustment of temperature raising and stirring improves the product stability, consistency and reliability; the wax is produced in Class 1000 clean production environment, which prevents introducing foreign pollutants, dust, particles and the like during processing, effectively improves product purity and ensuring the surface polishing quality of the microelectronic products.

The invention discloses tough mullite bricks for warm air ducts, which are characterized by being prepared from 5 to 40 weight percent of sintered mullite, 5 to 30 weight percent of sillimanite, 5 to 30 weight percent of andalusite, 5 to 30 weight percent of platy corundum, 4 to 15 weight percent of tough additive and 3 to 10 weight percent of binding clay. The tough mullite bricks combine the high performance of low-creep bricks, andalusite bricks, mullite bricks and the like for blast ovens, and have high toughness, thermal volume stability, thermal shock resistance (the thermal shock resistance under water cooling temperature of 1,100 DEG C is more than or equal to 40), wear resistance and corrosion resistance at high temperature, low impurity content and other high performance. Meanwhile, the product has CO corrosion resistance and therefore can meet the requirements of large and medium warm air ducts of blast furnaces for long life.

The invention provides a solar panel preparing method, which comprises the steps of: a, preparing a-Si:H film on the surface of a silicon chip after texturing; b, treating the silicon chip containing the a-Si:H film on the surface obtained in the step a at 800 to 900 DEG C for 60 to 120 min; and c, carrying out corrosion treatment on the surface of the silicon chip treated through high temperature. The solar panel preparing method has the advantages that a layer of a-Si:H film is deposited on the back surface of the silicon chip after the texturing, the problems of many impurities and micro defects in the silicon chip can be perfectly solved, the electrochemical performance such as the service life, the photoelectric conversion efficiency and the like of solar panels is improved, in addition, good back side and body passivation effects can be realized, the current and voltage (I-V) character of solar batteries is improved, and simultaneously, the process is simple and is easy to implement.

A solution casting method comprises the following steps of: dissolving a solute in a solvent to prepare a casting solution; preparing a casting plate by float glass; arranging a heating device on an insulation base plate; arranging a rack on the periphery of the heating device and putting the casting plate on the rack; arranging a cooling water jacket on the insulation base plate, and letting the cooling water jacket encircle the heating device, the rack and the casting plate; arranging a condensed solvent collecting tank at the bottom of the cooling water jacket; pouring the casting solution into the casting plate; arranging an insulation top cover over the cooling water jacket, and sealing the internal space encircled by the cooling water jacket and the insulation base plate; starting the heating device to heat the casting solution so as to completely evaporate the solvent in the casting solution; continuously heating to further raise crystallization degree of a film; stopping heating, and peeling the film off from the casting plate; detecting the film thickness, adjusting the heating field, and raising thickness uniformity of the finished product film. The method provided by the invention has advantages of simple technology, cheap equipment and low film preparation cost. the finished product film has advantages of high degree of crystallization, isotropy, uniform thickness, few impurities, good appearance, high yield and the like.

The invention provides a novel metalized film capacitor encapsulation wax, comprising the following components in parts by weight: 40 to 60 parts of petroleum wax, 10 to 15 parts of polyisobutene, 20 to 30 parts of Vaseline, 10 to 15 parts of sulphur, 10 to 15 parts of mica powder and 3 to 5 parts of straw ash. The metalized film capacitor encapsulation wax has good ductility, excellent electrical property and appropriate kinematic viscosity, and is convenient to fill clearances of a metalized film capacitor.

Provided is a highly-efficient oil-water separating device. The highly-efficient oil-water separating device comprises a pretreatment chamber, an oil-water separating chamber, a taper type cyclone separator and an oil collecting chamber, wherein the upper end of the pretreatment chamber is provided with a water inlet pipe, the pretreatment chamber is connected to a water pump through a first pipeline at the bottom end of the pretreatment chamber, the water pump is connected to the left lower end of the oil-water separating chamber through a second pipeline, the left upper end of the oil-water separating chamber is connected to the oil collecting chamber through a third pipeline, the right upper end of the oil-water separating chamber is connected to the left upper end of the taper type cyclone separator through a fourth pipeline, the right upper end of the taper type cyclone separator is provided with an oil exit pipe, and the bottom end of the taper type cyclone separator is provided with a drain pipe. The highly-efficient oil-water separating device is high in treating speed and good in effect, and can effectively remove solid impurities in oil-water mixed liquor.

The invention provides a method for cleaning a first mirror for a tokamak device by a direct-current cascade arc plasma torch. The method for cleaning the first mirror for the tokamak device by the direct-current cascade arc plasma torch comprises the following steps of presetting a working gas and measuring the emission spectrum of a standard lamp; turning on a vacuum apparatus, a water cooling apparatus and a gas inlet apparatus in succession, and completing the preparatory work of the discharging of the direct-current cascade arc plasma torch; discharging to generate the direct-current cascade arc plasma torch, and cleaning a sample of the first mirror; changing a relevant cleaning parameter to carry out personalized cleaning on the sample of the first mirror; detecting the recovery condition of the reflectivity of the sample of the first mirror in situ after the cleaning is carried out for a certain time, and determining whether to clean continuously or not according to a detection result; if the continuous cleaning is needed, repeatedly cleaning until cleaning requirements are met. The direct-current cascade arc plasma torch adopted for the method for cleaning the first mirror for the tokamak device by the direct-current cascade arc plasma torch is many in adjustable discharging parameter, good in directionality and free from impurity; the large-area, long-distance, uniform and quick removal of an impurity sedimentary formation on the surface of the first mirror can be realized; the on-line detection of the reflectivity is completed.

The invention discloses a nanoparticle transformer oil with good wear resistance and stability, and a preparation method thereof. The nanoparticle transformer oil is characterized by being prepared from the following raw materials in parts by weight: 1000-1200 parts of naphthenic base oil, 3-5 parts of aluminum nitride, 0.3-0.5 part of bismuth oxide, 0.2-0.5 part of gadolinium chloride, 0.2-0.5 part of urotropine, 0.3-0.5 part of lithium-based grease, 0.3-0.6 part of titanium carbide micropowder, 0.3-0.6 part of polyamide, 0.3-0.6 part of lithium borate, and 0.5-1.0 part of auxiliaries. The added nano aluminum nitride, bismuth oxide, gadolinium chloride and lithium borate particles have excellent dielectric property, high stability, good heat-conducting property, and small thermal expansion coefficient, and can greatly improve the insulating, arc extinction, stability and radiation performance of transformer oil; the added titanium carbide micropowder and polyamide have good wear resistance; and due to the added auxiliaries, the transformer oil is clarified, the oxidization property is reduced, the stability is enhanced, and the service life is prolonged.

The invention discloses a high-wearability hollow rail aluminum alloy plate which comprises an aluminum alloy plate matrix and a high-wearability polyurethane primer coating the surface of the aluminum alloy plate matrix. The high-wearability polyurethane primer comprises the following raw materials in part by weight: 30-40 parts of acrylic polyurethane, 15-25 parts of modified cyanate resin, 1.3-1.5 parts of talcum powder, 0.5-1 part of superfine barium sulfate, 0.6-0.9 part of a de-foaming agent, 0.5-0.8 part of a leveling agent and 0.3-0.6 part of a film forming agent. The high-wearabilityhollow rail aluminum alloy plate disclosed by the invention has excellent wearability and simultaneously has good film-forming property and processing property.

The invention relates to a preparation method of acyloin compounds, and belongs to the field of fine chemical industry. A new catalyst 1-n butyl benzimidazole hydrochloride is provided for synthesis of the acyloin compounds, and the products have the advantages of good quality and less side reactions; deficiencies existed in the prior art are overcome.

The invention discloses a manufacturing method of a fireproof board core paper. The invention belongs to the technical field of papermaking, needle-leaved wood, broad-leaved wood and camphorwood are used as fiber raw materials, the preparation method comprises the following steps: cooking, extracting, performing oxygen delignification, performing hydrogen peroxide micro-bleaching, washing, pulping, preparing pulp, slushing, screening and purifying, sizing, dehydrating and forming a net part, squeezing, performing pre-drying, performing surface sizing, performing post-drying, coiling, rewindingand packaging, wherein the ratio of the needle-leaved wood to the broad-leaved wood to the camphorwood is (4.5-5): (3-4): 1. The fireproof board core paper manufactured through the method is good inuniformity, stable in quantification, consistent in tightness, smooth in paper surface, good in laminating performance, free of impurities on the appearance of the paper surface and free of lint on the end face, and the flame retardant property and the sound insulation property of the core paper are improved simultaneously.

The invention relates to a microfluidic chip with a controllable tube side. The microfluidic chip comprises a circular substrate and an annular cover plate capable of being tightly bonded to the uppersurface of the circular substrate; and the interior of the part, corresponding to the annular region of the annular cover plate, of the circular substrate is provided with microtube concave channelswhich have upward openings and closed tail ends and are flush with the upper surface of the circular substrate, the annular cover plate is provided with openings for adjusting the microtube tube sidesin the directions of the microtube concave channels, each opening is connected with one corresponding material outlet of a microtube reactor. The microfluidic chip provided by the invention can directly adjust tube side lengths in real time according to the reaction time and flow rate of the required reaction or detection operation, thereby achieving the purpose of accurately controlling the contact and reaction time of two fluids.

The invention relates to a preparation method of low-impurity and high-solubility basic nickel carbonate. The preparation method comprises the following steps: preparing a salt solution containing nickel ions; preparing a salt solution containing carbonate; adding the salt solution containing the nickel ions and the salt solution containing the carbonate radicals into a reaction kettle in a parallel flow manner for coprecipitation reaction to obtain a mixture, wherein the process conditions of the coprecipitation reaction are as follows: the pH value of the reaction is 8.2-8.5, the reaction temperature is 50 DEG C to 53 DEG C, the reaction time is 7 minutes to 8 minutes, and the reaction rotating speed is 170 r/min to 190 r/min; and carrying out filter pressing washing and flash evaporation drying on the mixture to obtain low-impurity and high-solubility basic nickel carbonate. The content of Na and the content of S in the product prepared through the method are both smaller than 100 ppm, primary particles of the product are small, caking is avoided, and the solubility of molybdenum oxide and phosphoric acid is good.