177 results about "Sodium perchlorate" patented technology

A method of producing electrodes for electrolytic capacitors by etching metal foil in a low pH etching electrolyte is disclosed. The low pH electrolyte is an aqueous solution, which comprises hydrochloric acid, glycerol, sodium perchlorate or perchloric acid, sodium persulfate and titanium (111) chloride. Anode foils etched according to the method of the invention maintain high capacitance gains, electrical porosity and strength. The electrical porosity of the etched foils is sufficiently high such that the overall Equivalent Series Resistance (ESR) is not increased in multilayer anodes configurations. Also described is a low pH electrolyte bath composition. Anode foils etched according to the present invention and electrolytic capacitors incorporating the etched anode foils are also disclosed.

The invention discloses a supercapacitor and a manufacturing method of the supercapacitor. The supercapacitor comprises a positive electrode, a solid electrolyte and a negative electrode. The solid electrolyte is located between the positive electrode and the negative electrode and isolates the positive electrode from the negative electrode, and the solid electrolyte evenly permeates into a hole structure of the positive electrode and a hole structure of the negative electrode. The positive electrode is made of polypyrrole / nano-structured manganese dioxide composite materials. The manufacturing method of the supercapacitor comprises the steps that clean and dry carbon cloth serves as a current collector; a sulfuric acid and manganese sulfate mixed solution is used as an electro-deposition solution, and electrochemical deposition is performed on nano-structured manganese dioxide on the carbon cloth; a sodium perchlorate and pyrrole monomer mixed solution serves as an electro-polymerization solution, electro-polymerization is performed on a polypyrrole film on the surface of the nano-structured manganese dioxide, and the positive electrode is prepared; a phosphoric acid / polyvinyl alcohol electrolyte is prepared; the negative electrode is prepared through active carbon / graphite materials; the positive electrode and the negative electrode are assembled into the supercapacitor by using the prepared phosphoric acid / polyvinyl alcohol electrolyte.

The present invention discloses a sodium ion battery negative electrode sheet, the negative electrode sheet is a porous graphite film structure, the diameter of the pores is from 2 to 30 microns, the distance between the centers of the circles of the pores is 5 to 50 microns, mass ratio of carbon atoms in the porous graphite film is greater than 99%, the negative electrode sheet may be used directly as the sodium ion battery negative electrode sheet, can avoid the use of a conductive agent, a binder and a metal collector, and has high capacity, corrosion resistance and good conductivity. The present invention also discloses a sodium ion battery using the negative electrode sheet, the sodium ion battery comprises a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte, the sodium ion battery electrolyte solvent is one or more than one of diethanol dimethyl ether, dimethyl ether tetraethanol, and tetrahydrofuran, the electrolyte is one of sodium perchlorate, sodium hexafluorophosphate, sodium tetrafluoroborate and sodium trifluoromethanesulfonate, and the sodium ion battery is simple in production process and good in charging and discharging cycle stability, and has good prospects in the new energy field.

The invention provides a preparation method of a silicon-containing hydroxyapatite coating of a carbon / carbon composite material. The preparation method comprises the following steps: placing a low-density carbon / carbon composite material in a hydrothermal kettle containing a sodium perchlorate solution for hydrothermal treatment, and then washing with distilled water and drying the carbon / carboncomposite material; placing the treated carbon / carbon composite material in a flowable aqueous solution containing calcium nitrate and ammonium dihydrogen phosphate, and precipitating out a calcium hydrophosphate coating on the surface of the carbon / carbon composite material through an ultra-high frequency electromagnetic induced heating method; then placing the calcium hydrophosphate coating of the carbon / carbon composite material in the hydrothermal kettle containing an ammonia water aqueous solution for hydrothermal treatment so as to obtain the hydroxyapatite coating of the carbon / carbon composite material; and subsequently, placing the hydroxyapatite coating of the carbon / carbon composite material in the hydrothermal kettle containing a sodium silicate aqueous solution for hydrothermal treatment again so as to obtain the silicon-containing hydroxyapatite coating of the carbon / carbon composite material. By using the method, the silicon-containing hydroxyapatite coating with good crystallinity, high bonding strength up to critical load 143 N and Vickers hardness 2.3 can be prepared on the surface of the low-density carbon / carbon composite material.

The invention relates to an antistatic plastics sheet, in particular to an antistatic polystyrene combination, a preparation method thereof and the produced sheet prepared by the combination. The antistatic polystyrene combination is made through mixing the components of the following prescription according to weight proportion: 65.0 percent to 85.0 percent of HIPS polystyrene, 8.0 percent to 28.0 percent of methyl-acrylic acid polyethylene glycol single methyl ether ester, 3.14 percent to 6.87 percent of hydroxylethyl methacrylate, 1.72 percent to 3.97 percent of sodium perchlorate, 0.0963 percent to 0.145 percent of azobisisobutyronitrile and 0.92 percent to 2.4 percent of coupling agent. In addition, the invention discloses a sheet that is produced by three layers of materials compounded together, wherein, the materials of the upper layer and the lower layer are the antistatic polystyrene combination gained through mixing the components. The antistatic polystyrene sheet of the invention saves the consumption of the antistatic polystyrene combination, reduces cost, adopts three surface layers combination with the property of no drop-off, is characterized by lasting long effect and low humidity sensitivity and enhances level and advancement of electric products packaging.

An improved method of preserving a molecule in a bodily fluid comprises: (1) providing a preservative solution comprising: (a) an amount of a divalent metal chelator selected from the group consisting of ethylenediaminetetraacetic acid (EDTA), (ethylenebis(oxyethylenenitrilo))tetraacetic acid (EGTA), and 1,2-bis(2-aminophenoxy)ethane-N,N,N′,N′-tetraacetic acid (BAPTA) and salts thereof in the range of from about 0.001 M to about 2 M; and (b) an amount of at least one chelator enhancing component selected from the group consisting of lithium chloride, guanidinium chloride, guanidinium thiocyanate, sodium salicylate, sodium perchlorate, and sodium thiocyanate in the range of from about 0.1 M to about 10 M; and (2) adding the preservative solution to the bodily fluid, thus preserving the molecule. The molecule can be a protein or a small molecule, such as a steroid. The invention also encompasses preservative compositions suitable for preserving proteins or small molecules, and kits. Preservative compositions can further include at least one enzyme inactivating component selected from the group consisting of manganese chloride, sarkosyl, and sodium dodecyl sulfate in the range of up to about 5% molar concentration. Compositions and methods according to the present invention have many diagnostic and forensic uses, in addition to being suitable for preparing compositions usable by hunters for attracting animals.

The invention belongs to the technical field of electrochemical sensors, and in particular relates to an Au(111)-like nano-particle modified non-enzyme glucose sensor electrode, and a preparation method and application of the same. The preparation method comprises the following steps of: firstly, wiping a conductive substrate with alcohol, then, respectively performing ultrasonic washing with acetone, isopropyl alcohol and ultrapure water, adding the conductive substrate in the mixed liquor of deionized water, ammonia water and hydrogen peroxide, heating until boiling, finally, cleaning the conductive substrate with the ultrapure water and blowing the conductive substrate to dry with nitrogen; in the electrolyte solution composed of sodium perchlorate and chloroauric acid solution, firstly, performing electrolytic deposition on the conductive substrate by means of chronoamperometry, then, further performing electrolytic deposition on the conductive substrate by means of cyclic voltammetry, and cleaning the conductive substrate with the deionized water. The non-enzyme glucose sensor electrode is very sensitive to the concentration variation of the glucose and presents better linear relation, moreover, the non-enzyme glucose sensor electrode has better selectivity to the glucose, only needs 1.5s response time to the glucose and can achieve the detection limit of 5mu moL / L.

An improved method of preserving a molecule in a bodily fluid comprises: (1) providing a preservative solution comprising: (a) an amount of a divalent metal chelator selected from the group consisting of ethylenediaminetetraacetic acid (EDTA), (ethylenebis(oxyethylenenitrilo))tetraacetic acid (EGTA), and 1,2-bis(2-aminophenoxy)ethane-N,N,N′,N′-tetraacetic acid (BAPTA) and salts thereof in the range of from about 0.001 M to about 2 M; and (b) an amount of at least one chelator enhancing component selected from the group consisting of lithium chloride, guanidinium chloride, guanidinium thiocyanate, sodium salicylate, sodium perchlorate, and sodium thiocyanate in the range of from about 0.1 M to about 10 M; and (2) adding the preservative solution to the bodily fluid, thus preserving the molecule. The molecule can be a protein or a small molecule, such as a steroid. The invention also encompasses preservative compositions suitable for preserving proteins or small molecules, and kits. Preservative compositions can further include at least one enzyme inactivating component selected from the group consisting of manganese chloride, sarkosyl, and sodium dodecyl sulfate in the range of up to about 5% molar concentration. Compositions and methods according to the present invention have many diagnostic and forensic uses, in addition to being suitable for preparing compositions usable by hunters for attracting animals.

The invention provides a preparation method of a prussian blue type energy storage material, and specifically relates to a preparation method of a prussian blue type sodium-ion battery electrode material with high yield. The preparation method comprises the following steps: S1, dissolving divalent transition metal perchlorate and sodium ferrocyanide into water respectively to obtain a divalent transition metal perchlorate solution and a sodium ferrocyanide solution; S2, dissolving sodium perchlorate into water to obtain a sodium perchlorate solution; and S3, mixing the divalent transition metal perchlorate solution and the sodium ferrocyanide solution with the sodium perchlorate solution to obtain a mixed solution, and stirring and standing the mixed solution to obtain a sediment product;and separating and drying the sediment product to obtain the prussian blue type energy storage material. According to the preparation method, a great deal of loss of the prussian blue type material inthe cleaning process is avoided, and high-yield production can be realized. The preparation method is simple and high in yield, and is easy for industrial large-scale production.

The invention belongs to the polymer material field and in particular to a poly(ester-ether) polymer antistatic agent. The polymer antistatic agent mainly comprises the following raw materials in parts by weight: 100 parts of poly(ethylene glycol) methyl ether methacrylate, 30-250 parts of methylmethacrylate, 2-50 parts of the mixture of sodium methacrylate or methacrylic acid and sodium carbonate, 1-30 parts of sodium silicate and 0.1-5 parts of azodiisobutyronitrile (AIBN). In the preparation method in the invention, unstable and poisonous sodium perchlorate is not adopted, thus the production process becomes more environmentally friendly. In addition, by adopting the preparation method, the temperature resistance characteristics of the product can be increased and the application rangecan be expanded; and the polymer antistatic agent can be used in the antistatic materials such as polyethylene terephthalate (PET), polybutyleneterephthalate (PA), polybutylene (PB), poly ethylene (PE), propene polymer (PP), poly styrene (PS), acrylonitrile butadiene styreneacrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC) and polyethylene (PLA). In the preparation method in the invention, the solid antistatic agent suitable for granulation can be obtained without adding coupling agent, thus the cost is lower, the electrical property is better and the surface resistivity is up to 106-107 omega / sq.

The invention discloses a virus nucleic acid extraction kit. The virus nucleic acid extraction kit comprises a lysis solution, a first rinsing solution, a second rinsing solution, an elution solution,protease K and magnetic beads; the lysis solution comprises sodium perchlorate with the concentration of 1.0-5.0 mol / L, Tris-HCl with the concentration of 10-200 mmol / L, EDTA with the concentration of 1-50 mmol / L, and Triton X-100 with the concentration of 50-100 microlitre / milliliter; the first rinsing solution is sodium perchlorate solution with the concentration of 2.0-2.5 mol / L, and the solvent of the sodium perchlorate solution is 70-80% ethyl alcohol; the second rinsing solution comprises DEPC water and absolute ethyl alcohol, wherein the volume ratio of the DEPC water to the absolute ethyl alcohol is (3-4):(6-7); the elution solution is Tris-HCl-DEPC water solution with the concentration of 8-12 mmol / L. The invention further discloses a method for extracting viral nucleic acid by using the extraction kit. Through optimization of the reagent formula, the extraction kit has the advantages of being rapid and efficient and avoiding pollution, a large amount of time and reagent canbe saved, and the extraction efficiency of the virus nucleic acid is improved.

The invention discloses a manufacturing method for a polypyrrole / conductive carbon cloth combined electrode, and application thereof on a supercapacitor. A potentiostatic method is used, a solution containing pyrrole monomer and sodium perchlorate (NaClO4) is used as an electrolyte, a polypyrrole thin film is deposited on the surface of a carbon cloth, and the thin film shows a sheet structure. In1 M KOH electrolyte, electrochemical performance evaluation is performed on the polypyrrole / carbon cloth in -1-0 V potential window range. Compared with performance of a blank carbon cloth and polypyrrole (polypyrrole / Ni) which is loaded on a base of foamed nickel, maximum area specific capacitance of the blank carbon cloth and the polypyrrole / Ni combined electrode is 2.29 F / cm<2>, after 1000 times of circulation, capacity retention ratio is 69.56%, and maximum capacity of polypyrrole / Ni is just 0.064 F / cm<2>. After the polypyrrole is combined with the carbon cloth, maximum specific capacitance can reach 3.18 F / cm<2>, and after 1000 times of circulation, capacity retention ratio reaches up to 96.35%, obviously superior to that of the blank carbon cloth and the polypyrrole / Ni.

The invention discloses a glassy carbon electrode (GCE) modified by aniline-co-aminophenol copolymer carbon nanotube composite, a preparation method thereof and a method for removing perchlorat from water. The preparation method of the glassy carbon electrode comprises the following steps: dispersing carbon nanotubes in DMF; taking a proper amount of mixed liquor to drip onto the clean surface of the glassy carbon electrode, and air drying; carrying out electrolytic polymerization on a three-electrode system consisting of a glassy carbon working electrode modifying the carbon nanotube, a platinum counter electrode and a calomel reference electrode in the mixed liquor of hydrochloric acid, aniline and o-aminophenol through a constant bit method; thus, generating aniline-co-aminophenol copolymer carbon nanotube composite on the surface of the carbon nanotube modified glassy carbon electrode after a certain time. The modified electrode is washed by diluted hydrochloric acid and secondary water successively, forms the three-electrode system with the platinum counter electrode and the calomel reference electrode, and is doped in the water body containing perchlorat. The perchlorat is doped on the glassy carbon electrode modified by the aniline-co-aminophenol copolymer carbon nanotube composite, which can be seen clearly in an X-ray photoelectron spectroscopy.

The invention discloses an electrolyte for an aqueous zinc ion battery and application thereof. The electrolyte for the aqueous zinc ion battery comprises solvent water and electrolyte, and the electrolyte is composed of high-concentration supporting electrolyte salt and zinc salt; the mass molar concentration of the high-concentration supporting electrolyte salt is not less than 10 mol / kg, and the high-concentration supporting electrolyte salt is selected from at least one of lithium acetate, potassium acetate, ammonium acetate and sodium perchlorate. According to the electrolyte disclosed bythe invention, a large amount of water molecules are consumed and the electrochemical activity of the water molecules is reduced by utilizing a strong solvation effect of high-concentration supporting electrolyte salt and solvent water molecules; therefore, hydration of zinc ions is reduced, corrosion dissolution of the zinc negative electrode is reduced, and decomposition of water molecules on the surface of the electrode is inhibited; the effects of reducing hydrogen evolution reaction and reducing zinc dissolution are achieved. The electrolyte provided by the invention can effectively inhibit zinc ions from forming zinc dendrites in dissolution and deposition, and inhibits the growth of the zinc dendrites; the electrochemical window of the electrolyte is improved, and the cycle life ofthe aqueous zinc ion battery is prolonged.

The invention provides an aqueous electrolyte and a super-capacitor. The aqueous electrolyte comprises glucose, water and an inorganic salt. Compared with the prior art, the glucose is added to the aqueous electrolyte taking the inorganic salt as an electrolyte, a solidifying point of the acquired glucose-water-salt electrolyte is relatively lower than that of a water-salt electrolyte, and the glucose-water-salt electrolyte is difficult to freeze and has good electrochemical performance at a relatively low temperature, so that using restrictions of the aqueous electrolyte at low temperature conditions are broken through. Furthermore, sodium perchlorate is selected preferably to act as the electrolyte, so that the acquired aqueous electrolyte is enabled to have higher electric conductivity, a wider working temperature range and a wider potential window, and the aqueous electrolyte is enabled to still have good performance under the low temperature conditions. In addition, the glucose is taken as an anti-freeze additive, so that the solidifying point of the aqueous electrolyte is reduced. The glucose is an environment-friendly substance, and is wide in source, cheap and easy to get.

The invention relates to the technical fields of cleaner production and circulating production, in particular to a potassium perchlorate production technology with zero wastewater discharge and products of the potassium perchlorate production technology. The steps of electrolytic double decomposition are as follows: (1) electrolyzing sodium chlorate to sodium perchlorate; (2) taking potassium chlorate as a double decomposition raw material, and performing double decomposition reaction of potassium chlorate and sodium perchlorate to generate the potassium perchlorate crude materials; and (3) recrystallizing and purifying the potassium perchlorate crude materials to obtain the products, and electrolyzing and recycling double decomposition mother solution sodium chlorate. The invention has the following advantages that: the water in the production process can be recycled, the production wastewater is not discharged, the chromium-containing waste residues in the production are recycled after being extracted simultaneously, and the rest of solid waste residues are used for other purposes, so that the strategic requirements of the sustainable development of the social economy can be met, and the production technology is suitable for popularization; and moreover, the environmental protection problem is completely solved, the product quality is improved, the product purity is high, the firing is fast, the reaction is complete, no residue is caused; and the production technology is safer and more stable, the product cost performance is higher, and the competitive power is stronger.

The invention provides an electrolyte for a super capacitor. In the electrolyte, a solvent is water, and a solute is 2 to 6M sodium perchlorate. The invention also provides the super capacitor, which comprises an anode, a cathode, a diaphragm between the anode and the cathode, and the electrolyte, wherein the electrolyte is 2 to 6M aqueous solution of sodium perchlorate. The aqueous solution of sodium perchlorate with high concentration has high ionic conductivity, the sodium perchlorate is difficult to separate out at a low temperature, and the aqueous solution of sodium perchlorate has low freezing point and can adapt to a low-temperature work environment; and the aqueous solution of sodium perchlorate has wide electrochemical window and good electrochemical properties at the same time. The super capacitor provided by the invention has high ionic conductivity, the capacity is slowly attenuated during charge and discharge, and the energy density and power density are high; and in addition, the electrolyte and the super capacitor provided by the invention have the advantages of simple preparation process, low cost of raw materials, convenient operation and reduction in production cost and using cost.

The invention discloses a method for extracting a large number of high-purity deoxyribonucleic acid (DNA) from chicken blood. The method comprises absorbing an unfreezing chicken blood sample preserved through DNA preserving fluid into a centrifugal tube containing a reagent X; performing repeated dangling through a liquid-moving gun until the original blood sample becomes clear liquid; performing centrifugation and removing supernate; adding a reagent Y, slightly performing suspension on centrifuged sediment obtained by the last step; adding ribonuclease (Rnase) A, evenly mixing and then performing warm bath at the temperature of 37 DEG C for 30 minutes; adding 5mol / L of sodium perchlorate, performing manual oscillation to achieve mixing for 5 minutes; performing water bath, manually shaking the mixture for one time every 5 minutes; adding precooled chloroform, mixing for 5 minutes, centrifuging and absorbing supernate into another centrifugal tube; adding isopyknic isopropyl alcohol, and slowly shaking to obtain flocculent DNA; washing the flocculent DNA through precooled 75% of ethanol for two times, airing, performing dissolution through appropriate TE (mixture of tris and ethylene diamine tetraacetic acid ), storing for one week at the temperature of 4 DEG C and then storing for a long term at the temperature of -20 DEG C. By means of the method, the time for extracting the DNA is short, the extracted DNA sample has high purity, large concentration and good quality, and the high-purity deoxyribonucleic acid (DNA) can completely meet requirements of downstream molecular biology experiments.

The invention relates to an electrochemical method for improving the photoelectric performance of a nano bismuth vanadate film. The method comprises the following steps of: spin-coating bismuth vanadate colloid prepared from a Bi(NO3)3.5H2O-acetic acid solution and a vanadyl acetylacetonate-acetylacetone solution on clean indium tin oxide (ITO) conductive glass, and roasting to obtain the nano bismuth vanadate film; preparing an aqueous solution of sodium perchlorate as electrolyte; and putting the nano bismuth vanadate film into the electrolyte, and performing electrochemical surface treatment for 1 to 20 minutes by using the nano bismuth vanadate film as a working electrode, using a platinum electrode as a counter electrode, using a saturated calomel electrode as a reference voltage and applying a voltage of minus 0.2V to minus 0.5V. The method is simple in equipment, convenient to operate, high in controllability and low in cost, can be used for greatly improving the photoelectric performance of the nano bismuth vanadate film, and is expected to be applied in the field of semiconductor photovoltaic and photolysis water.

The invention discloses an electrochemical catalytic synthesis method of aromaticnitrile. Aromatic aldehyde is used as a raw material, HMDS (hexamethyldisilazane) is used as a nitrogen source, a three-electrode system is adopted, a negative electrode and a positive electrode adopt platinum electrodes, and a 0.1mol / l silver nitrate acetonitrile solution is used as a reference electrode; aromatic aldehyde, HMDS, TEMPO (2,2,6,6-tetramethyl-1-piperidine-N-oxyl free radicals) and acetic acid are added to an electrolyte acetonitrile solution with certain concentration, the mixture is stirred for an electrolytic reaction at the temperature of 5-40 DEG C and under the constant voltage of 0.5-8.0 V for 5-30 h, a reaction liquid is subjected to aftertreatment, and a product, namely, aromaticnitrile, is obtained; an electrolyte refers to sodium perchlorate, sodium periodate or sodium tetrafluoroborate. The method is simple and safe to operate and easy to implement.

The invention belongs to the technical field of molecular biology and particularly relates to a method for extracting DNA from a plant rich in polysaccharide and polyphenol. The provided method for extracting DNA from the plant rich in polysaccharide and polyphenol comprises the following steps: using a specific lysis solution to lyse a cell, extracting the DNA with Tris phenol-chloroform mixed solution, chloroform and a sodium perchlorate combination solution, and purifying the extracted DNA through a self-made adsorption column membrane, thereby obtaining the high-quality genomic DNA. The purity of the DNA extracted through the method for extracting DNA from the plant rich in polysaccharide and polyphenol is high, the impurity is low, the DNA is further prevented from being damaged by asuperoxide anion free radical or active oxygen, the completeness of the extracted genomic DNA is guaranteed, and the method is favorable for the scientific researches like construction of the gene library, PCR (Polymerase Chain Reaction) analysis, and Southern hybridization.

An ignition medicine with chlorate oxygen column and its production are disclosed. The ignition medicine consists of sodium chlorate 30~50% with grain size 60~300 meshes, lithium hyperchlorate or sodium perchlorate 10~30% with grain size 60~300 meshes, barium dioxide 0.1~6% with grain size 80~200 meshes, metal oxide ironic oxide or cuprous oxide 5~9% with grain size 20~200 meshes, metal powders 15~25% with grain size 100~300 meshes and cobalt salt 5~15% with grain size 40~200 meshes. It has shorter gas-take time and higher starting success probability of engine.

The invention relates to a P2-type sodium ion battery layered positive electrode material as well as a preparation method and application thereof. The positive electrode material is Na0.67NixMnyAZO2,wherein A is one of Ti, Mg, Sn or Bi, x is greater than or equal to 0 and less than or equal to 0.5, y is greater than or equal to 0 and less than or equal to 1, and z is greater than or equal to 0 and less than or equal to 0.5. The preparation method comprises the steps of weighing raw materials according to a stoichiometric ratio by adopting a high-temperature solid-phase method, grinding, pressing into a ceramic chip, calcining in air at high temperature, and cooling to room temperature. The application comprises the steps of uniformly mixing the positive electrode material, conductive carbon black and polyvinylidene fluoride according to a mass ratio ranging from 8: 1: 1 to 6: 3: 1, coating a thin sheet by using an aluminum foil as a current collector, and drying in a vacuum drying oven to form a positive plate; and assembling the sodium ion battery in a glove box filled with argon by taking metal sodium as a negative electrode, GF / D as a diaphragm and a sodium perchlorate electrolyte. The positive electrode material prepared by the invention has a simple phase change process, high energy density and good stability; and the method is simple, easily available in raw materials, low in price, environment-friendly and suitable for large-scale production.

The present invention belogns to the field of electrolytic technology, and it relates to a method for preparing sodium perchlorate by utilizing external circulating type electrolytic process. The chrome-removed electrolyte can be fed into electrolytic system to make electrolysis. It is characterized by that the electrolyte is introduced into external circulating type electrolytic system to make electrolysis to obtain sodium perchlorate, and its electrolyte external circulation mode is a natural convection circulation or forced circulation. Said invention can implement continuous operation, can prolong life of electrode, raise production capacity and reduce production cost, etc.

The invention discloses a centrifugal extracting method for preparing ammonium tungstate solution from soda leach liquor of tungsten contained material. The method takes the trialkyl methyl ammonium carbonate as extractant containing tungsten materials directly from the leaching solution of soda extraction tungsten; then the impurities of phosphorus, arsenic, silicon, such as stripping more than stay in solution with separation of tungsten, tungsten negative organic phase after washing with detergent as ammonium bicarbonate and ammonium carbonate extraction of the mixed solution to obtain high-purity tungsten perchlorate solution, anti-organic phase after extraction with sodium hydroxide solution using renewable, recycled back to the organic phase after extraction, extraction, extraction operations are carried out the centrifugal extractor. The invention achieves the invention sodium perchlorate solution to the transformation of tungsten, and the invention removes the phosphorus, arsenic, silicon and other impurities, stripping more than the use of liquid can be returned to leaching. The extraction and anti-extraction process of the invention has a fastseparation, short process, and small chemical reagent consumption, waste water emissions from small, easy to achieve industrialization.

The invention discloses a single-side thinning treatment method for a liquid crystal display screen. The single-side thinning treatment method comprises the following steps of material preparation, glass substrate cleaning, curing and edge sealing, pretreatment, chemical etching and thinning, cleaning and air drying, physical polishing, cleaning and quality evaluation. According to the invention,cleaning liquid prepared from acetone, ethanol and pure water is used for cleaning a glass substrate so as to remove dust and grease; the glass substrate is soaked with a prepared pretreatment solution, tiny concave points on the surface of the glass are filled with sodium hydroxide and sodium bicarbonate, and the sodium hydroxide and sodium bicarbonate are combined with silicon-oxygen bonds on the surface of the glass, so the glass substrate is prevented from generating cracks in subsequent processing; sodium perchlorate and disodium ethylenediaminetetraacetate in a thinning etching solutionare matched with pyrethroid and hydrogen peroxide, so the viscosity of the thinning etching solution is increased, which is beneficial for realizing uniform etching and reducing the generation of concave-convex points; and meanwhile, the glass substrate obliquely leans against the interior of the etching groove in the etching process, and single-face processing is facilitated through circulating waterfall type flow guide of the thinning etching solution.

The invention discloses a low temperature resistant water-resisting gelatinous emulsion explosive. The emulsion explosive comprises the following ingredients: ammonium nitrate, sodium nitrate, sodium perchlorate, calcium nitrate, urea, an oil phase, water, an emulsifier, a sensitizer, an auxiliary sensitizer, a crystal modifier and polyvinyl alcohol, wherein the emulsifier is polyisobutene diacid alkylol amine; the sensitizer is sodium nitrite or ammonium bicarbonate; the crystal modifier is sodium dodecyl benzene sulfonate; and the auxiliary sensitizer is one or a mixture of glass microspheres, resin microspheres, perlite and expanded perlite. The invention also designs a preparation method of the low temperature resistant water-resisting gelatinous emulsion explosive. The explosive has good water resistance and can be stored in flowing water. In addition, as the explosive structure is not easy to destroy under low-temperature condition, the explosive can be stored under low-temperature condition. Meanwhile, gas released during explosive initiation has low toxicity; the raw materials are easily available, and price is relatively low; and a preparation process of the explosive is simple and cost is low.

A chemical carbon dioxide gas generator comprising: - a charge housing; - a carbon dioxide gas penetrable charge, contained in the said housing, the charge comprising a) 40-60 wt. % of a substance which upon decomposition generates carbon dioxide, which substance is selected from the group of magnesium carbonate, other carbonates, magnesium oxalate and other oxalates, b) 20-50 wt. % of an oxidiser selected from the group of sodium chlorate, potassium chlorate, lithium chlorate, other metal chlorates, sodium perchlorate, potassium perchlorate, lithium perchlorate, and other metal perchlorates, c) 1-20 wt. % of carbon or another fuel, d) 1-10 wt. % binder, said components a), b), c) and d) together forming 90-100 wt. % of the total weight of the charge; - an ignition device for igniting the charge; - a carbon dioxide gas treatment unit for reducing the content of one or more side-products - which may have been formed by the charge - in the generated carbon dioxide, and / or for cooling carbon dioxide gas generated by the charge; and - an outlet for carbon dioxide gas generated by the charge.

The invention relates to an organic anode used for a sodium carbon dioxide battery and a manufacturing method thereof, and the sodium carbon dioxide battery. The organic anode comprises a catalyst, anorganic electrolyte for activating the catalyst and providing sodions, a conductive additive and a binder. The organic electrolyte comprises one of a sodium perchlorate electrolyte, a sodium trifluoromethanesulfonate electrolyte, a sodium bis(trifluoromethanesulfonyl)imide electrolyte and a sodium hexafluorophosphate electrolyte. The catalyst comprises at least one of graphite, activated carbon,Ketjen black, carbon fibers, carbon nano angles, carbon nanotubes, graphene, a modified carbon material and other porous active materials. The organic electrolyte activation catalyst can effectively accelerate a transmission rate of ions and electrons and conductivity is improved.

The invention provides an insulating coating. The insulating coating is obtained by mixing evenly a raw material mixture; the raw material mixture contains a dihydric phosphate, an oxidizing agent, a silane coupling agent, an acid, a water soluble silicate and water; the oxidizing agent is at least one of sodium perchlorate, potassium permanganate, hydrogen peroxide, sodium chlorate, sodium nitrite, zinc nitrate, sodium persulfate, sodium bromate, ammonium peroxydisulfate, sodium molybdate and cobalt nitrate. The invention also provides an electrical steel material. The invention also provides a preparation method of the electrical steel material. The invention further provides the electrical steel material obtained according to the preparation method of the electrical steel material. The insulating coating after curing has good heat resistance, insulativity, adhesiveness, corrosion resistance, punching and shearing processability and other properties.