48 results about "Potassium Pyrophosphate" patented technology

The invention relates to the field of electrolytic copper foil processing and application, and discloses a chromium-free environment-friendly passivation solution and an electrolytic copper foil preparation method, and the passivation solution is composed of 80-120 mg / L of silver phosphate, 5-20 mg / L of o-tert-butylphenol, 60-100 mg / L of potassium pyrophosphate and 10-40 mg / L of sulfuric acid. The o-tert-butylphenol can be adsorbed to the crystal boundary of a silver layer to form antioxidant free radicals, and the antioxidant free radicals are preferentially combined with oxygen molecules to form a stable compound, so that the oxidation resistance is improved; and meanwhile, the o-tert-butylphenol can be combined with a silica group of the silane coupling agent, so that the adhesive force of the silane coupling agent on the metal surface is increased, and the stripping resistance of the copper foil is improved.

The invention discloses a nickel-tin alloy-oxide composite material Ni3Sn2-NiSnOx, a preparation method thereof and application of the nickel-tin alloy-oxide composite material Ni3Sn2-NiSnOx in electrocatalytic ammonia synthesis reaction, and belongs to the technical field of electrochemical catalysis. The preparation method comprises the following steps: adding SnCl2. 2H2O and NiCl into deionized water as raw materials, adding glycine, potassium pyrophosphate and urea as electro-deposition auxiliary agents, and stirring for 10 minutes to obtain electro-deposition liquid; and carrying out electro-deposition on a conductive substrate serving as a cathode, so that Ni and Sn are co-deposited to form a nickel-tin alloy, and part of the nickel-tin alloy reacts with oxygen in the deposition process or after deposition to form a nickel-tin oxide phase, so that the Ni3Sn2-NiSnOx composite catalytic material is obtained. By regulating and controlling the concentration of tin ions in the electroplating solution and the electrodeposition time, the component proportion of nickel and tin in the product and the morphology structure of the material can be regulated. The composite material provided by the invention has excellent electrocatalytic nitrogen reduction synthesis ammonia activity and selectivity, and solves the problems that the service life of a catalyst is shortened and the catalytic activity and stability are reduced due to irreversible reconstruction of an alloy compound under high potential.

The invention discloses a ceramic membrane cleaning agent which comprises an agent A, an agent B, an agent C and water, wherein the agent A comprises sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant; the agent B comprises potassium pyrophosphate and ethylenediamine tetraacetic acid tetrasodium salt; the agent C comprises sodium hypochlorite. The invention further discloses a preparation method of the ceramic membrane cleaning agent. The problems that an existing ceramic membrane cleaning agent is common in cleaning effect, and the service life of a ceramic membrane is affected due to incomplete cleaning are solved. The agent A is selected from sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant, and the sodium dodecyl sulfate and the polyoxyethylene ether nonionic surfactant both have an emulsifying effect and good compounding property and can enhance the emulsifying effect through a synergistic effect; in the agent B, the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate have a synergistic effect, and the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate are matched, so that the cleaning effect can be improved, and the decontamination capability can be enhanced. The agent C is matched with the agent A and the agent B, so that the overall stability of the cleaning agent is ensured. Therefore, the ceramic membrane has antibacterial, efficient decontamination and efficient emulsification performance at the same time.

The invention belongs to the technical field of silicon material cleaning, and particularly relates to a silicon material cleaning agent and a preparation method and application thereof. The silicon material cleaning agent provided by the invention comprises the following components in parts by mass: 50-60 parts of water; 15 to 30 parts of an acidic etching solution; 10 to 20 parts of a first chelating agent; 10 to 20 parts of a second chelating agent; 0.5 to 5 parts of a surfactant; 5 to 15 parts of a builder; wherein the first chelating agent is selected from at least one of 1-hydroxyethylidene-1, 1-diphosphonic acid or ethylenediaminetetraacetic acid; the second chelating agent is selected from at least one of citric acid, gluconic acid, tartaric acid, malic acid, sodium citrate, sodium gluconate, potassium pyrophosphate and sodium pyrophosphate. The silicon material cleaning agent is used for silicon material cleaning, various metal ions can be cleaned at a time, the silicon material cleaning efficiency is improved, and the industrial cost is effectively reduced.

The invention discloses a method for preparing a copper-nickel alloy for a solid-state battery through an alkaline system, and belongs to the technical field of solid-state batteries. A pyrophosphate aqueous solution system is used as an electrolyte, and the copper-nickel alloy is prepared through an electro-deposition method; the pyrophosphate aqueous solution system comprises the following components: raw materials of copper pyrophosphate and nickel chloride, a main complexing agent of potassium pyrophosphate, an auxiliary complexing agent of ethylenediaminetetraacetic acid or potassium sodium tartrate, a brightener and an additive. The components and thickness of the alloy are adjusted by changing the metal ion concentration, the input amount of the complexing agent and the like and changing the technological parameters (pH, current density, electrodeposition time and the like), the copper-nickel alloy with the tensile strength reaching 1012.70 MPa, the elongation reaching 5.27% and the nickel content being 8.93% can be prepared, the corrosion resistance is excellent, the coating thickness is uniform, electrodeposition can be conducted at the normal temperature, and the copper-nickel alloy can be used for preparing the copper-nickel alloy with the tensile strength reaching 1012.70 MPa, the elongation reaching 5.27% and the nickel content reaching 8.93%. Therefore, the method is suitable for large-scale industrial production.

The application discloses a production process of electroplating grade potassium pyrophosphate, which uses potassium carbonate and diaphosphorus pentoxide as raw materials, and adds a catalyst to react in a high-pressure reaction kettle. After the reaction is completed, water is added for dissolution, and the pH value of the slurry is controlled to be 9.0-10.0. After being filtered through a precision filter, the slurry is punched into a slurry storage tank, and the slurry storage tank is maintained at 75-95 DEG C. The slurry in the storage tank is punched into an evaporation and concentration device for concentration, and then the concentrated liquid is punched into a continuous crystallization device for continuous crystallization operation. After centrifugal treatment, the filtrate is recycled into the evaporation and concentration device. The potassium pyrophosphate crystals are subjected to vacuum drying treatment in a vacuum drying equipment, and then are packaged into finished products after being crushed and sieved. The potassium pyrophosphate crystals obtained by the application have high purity, less caking phenomenon, and stable and controllable product quality.

The present invention discloses a production method of highly soluble sodium-potassium cross-linked modified phosphate. One or several of sodium phosphate salts such as acid sodium pyrophosphate and sodium pyrophosphate, and one or several of potassium phosphate salts such as potassium pyrophosphate and acid potassium pyrophosphate are used as raw materials. Through scientific proportioning, homogeneous emulsification, static mixing, boiling drying, and high-efficiency polymerization, a highly soluble sodium-potassium cross-linked modified phosphate product is produced. This production method has the characteristics of strong product adjustability, good product solubility, and low energy consumption.

The invention relates to the technical field of plant planting chemical fertilizers, and discloses a liquid chemical fertilizer for orange planting and a preparation method thereof. The fertilizer is prepared from the following components in parts by weight: 10-15 parts of a compound nitrogen source of calcium nitrate and ammonium sulfate, 5-8 parts of a compound phosphorus source of potassium pyrophosphate and ammonium dihydrogen phosphate, 8-12 parts of a mixed potassium source of potassium citrate and potassium sulfate, 0.1-0.3 part of EDTA-Zn, 1-2 parts of calcium amino acid chelate, 0.3-0.8 part of polyaspartic acid, 0.05-0.1 part of nano silicon dioxide and 1-2 parts of a co-culture of trichoderma harzianum and nitrogen-fixing bacteria. According to the invention, a special nano material and a high-molecular polymer have a synergistic effect, a three-dimensional protection network is constructed, various nutrients are ensured to be kept in a uniformly dispersed state for a long time, a dual-molecular protection mechanism is developed aiming at the characteristic that trace elements are easy to lose efficacy, and the nutrient solution has the advantages that the nutrient solution has good stability, and the nutrient solution has a good application prospect. And oxidation and precipitation are effectively prevented, so that the product can still keep stable components under extreme storage conditions.

The invention belongs to the technical field of catalysts. The invention provides a catalyst for preparing cyclopentanone through cyclopentanol dehydrogenation and a preparation method thereof.The preparation method comprises the steps that S1, 120-126 g of potassium pyrophosphate, 10-13 g of stannous chloride, 8-10 g of copper sulfate and 2-3 g of carbon nano tube powder are added into 1 L of deionized water, the pH value is adjusted to 7-8, and an electroplating solution is obtained; s2, assembling a PS colloidal crystal template on the pretreated copper sheet to obtain a copper sheet with the PS colloidal crystal template; s3, taking a copper sheet with the PS colloidal crystal template as a cathode and a titanium mesh as an anode, performing electro-deposition in the electroplating solution, roasting at 500-550 DEG C for 3-4 hours, stripping and grinding to obtain a Sn-Cu-CNT composite material; s4, etching the Sn-Cu-CNT composite material with 10vol% acetic acid for 30-35 minutes in an ice bath at 0-5 DEG C to obtain an etched material, putting the etched material into an ammonia water-EDTA (Ethylene Diamine Tetraacetic Acid) mixed solution with the pH (Potential of Hydrogen) of 9.5, and oscillating for 10 minutes at 60 DEG C to obtain a carrier; and S5, impregnating the carrier with a nickel nitrate solution, drying, and roasting to obtain the catalyst. The method can effectively improve the conversion rate of cyclopentanol and the selectivity of cyclopentanone.

This invention provides a method for degreasing and whitening battery aluminum casings. The method includes the following steps: preparing a degreasing and whitening solution from powder and water; using the degreasing and whitening solution to degrease and whiten the battery aluminum casing; rinsing the degreased and whitened aluminum casing to obtain a clean battery aluminum casing. The powder is potassium pyrophosphate, and the water includes sodium hydroxyethylidene diphosphonate, surfactant, organic solvent, and deionized water. This invention combines degreasing and whitening, effectively reducing the cleaning process of battery aluminum casings and improving production efficiency. This method does not require the use of a special PVC tank; only a stainless steel tank commonly used in industrial cleaning is needed.

The application relates to a magnesium alloy micro-arc oxidation process, a magnesium alloy and application thereof, and the process comprises the following steps: firstly, a magnesium alloy workpiece to be treated is pretreated and then placed into an electrolyte; the composition of the electrolyte comprises the following components: 5-10 g / L of sodium silicate, 10-15 g / L of potassium pyrophosphate, 1-3 g / L of sodium aluminate, 3-5 g / L of sodium hydroxide and 1-10 g / L of potassium fluorotitanate; then, the magnesium alloy workpiece is subjected to micro-arc oxidation treatment by using the electrolyte; during the micro-arc oxidation treatment, the pH value of the electrolyte is greater than 12, the treatment temperature is 25+ / -5 DEG C, the current density is 1-5 A / dm2, and the treatment time is 5-60 min; then, the electrolyte is subjected to component analysis according to a preset interval, and the concentration of each component of the electrolyte is adjusted according to the analysis result. The application solves the problems that the yield of magnesium alloy prepared by the current magnesium alloy micro-arc oxidation is low, the corrosion resistance is insufficient, and the magnesium alloy is difficult to be used in a cooling liquid corrosion environment for a long time.

A preparation method of a new type of environment-friendly natural latex product. The method comprises the following steps: S1, preparation of a sodium salt solution of shellac resin; S2, adding potassium pyrophosphate, potassium oleate, potassium ricinoleate and sulfur dispersion into natural latex, and stirring and aging to obtain a mixture A; S3, adding calcium salt aggregates of shellac resin and a rubber deodorant into the mixture A, stirring uniformly, immediately transferring the mixed glue liquid into a foaming machine to perform foaming, injecting zinc oxide dispersion and sodium fluosilicate dispersion during the foaming process, and injecting the foamed latex mixture into a pillow mold to enter a steaming oven for vulcanization; and S4, washing and vacuum drying the semi-finished product of the latex product, and completing the production. The method is convenient to process and reliable in environmental protection.

The invention discloses a silicon carbide wafer cleaning method which comprises the following steps: S100, providing a self-rotating to-be-cleaned silicon carbide wafer, and carrying out jet cleaning on the to-be-cleaned silicon carbide wafer by using water-gas two-fluid to obtain a first wafer; s200, a first cleaning solution is used for cleaning the first wafer to obtain a second wafer, a solute of the first cleaning solution comprises a polyoxyethylene ether surfactant, potassium pyrophosphate and a solubilizer, and a solvent of the first cleaning solution is ultrapure water; s300, cleaning the second wafer by using an ammonia water solution to obtain a third wafer; s400, cleaning the third wafer by adopting an SC-2 cleaning solution and a hydrofluoric acid solution in sequence to obtain a fourth wafer; and S500, performing jet cleaning on the fourth wafer through water-gas two-fluid, and drying to obtain a fifth wafer. By using the first cleaning solution comprising the polyoxyethylene ether surfactant, the potassium pyrophosphate and the solubilizer, the surface cleanliness of the silicon carbide wafer is improved.

To suppress the electrolysis of an aqueous electrolyte solution on a negative electrode surface when an aqueous potassium ion battery is being charged / discharged. SOLUTION: An aqueous electrolyte solution comprises potassium pyrophosphate which is dissolved at a concentration of 2 mol or more per one kg of water. It is assumed as to the aqueous electrolyte solution that a pyrophosphate ion is decomposed on a negative electrode surface and then a coating is formed on a high-work function portion of the negative electrode surface when a battery is being charged / discharged. As a result, the direct contact of the aqueous electrolyte solution and the negative electrode surface is suppressed and when the battery is being charged / discharged, the electrolysis of the aqueous electrolyte solution on the negative electrode surface is suppressed. SELECTED DRAWING: FIG. 3

This invention relates to an outdoor cultivation method for Haematococcus pluvialis to improve astaxanthin yield, belonging to the field of Haematococcus pluvialis cultivation technology. The invention includes four main steps: (1) after Haematococcus pluvialis is cultured indoors, it is separated into outdoor GP pipes and cultured under conventional stress for three days, followed by the addition of red-converting culture medium; (2) the carbon dioxide and air ratio is adjusted the next day to adjust the pH value of the algal solution in the GP pipe to between 9.0 and 10.5; (3) when the pH value reaches between 9.0 and 9.5, potassium pyrophosphate is added; and (4) the Haematococcus pluvialis is then cultured outdoors for 11 to 22 days. By adding potassium pyrophosphate during the outdoor cultivation process, this invention effectively improves the synthesis rate of astaxanthin. After adding potassium pyrophosphate and continuing to cultivate for 11 days, the astaxanthin content in the algal solution can reach 5.7%, shortening the cultivation time and accumulating more astaxanthin in a shorter time, thereby improving the astaxanthin yield.

This invention discloses a dyeing method for fully water-soluble fertilizer and the water-soluble fertilizer itself, belonging to the field of water-soluble fertilizers. The method includes the following steps: M1, dyeing fully water-soluble fertilizer granules with a fully water-soluble fertilizer dyeing solution, the amount of which is 1% to 10% of the fertilizer's weight; M2, granulating the dyed fully water-soluble fertilizer granules in a mechanical extrusion granulation device to obtain the fully water-soluble fertilizer product; the dyeing solution is composed of the following components: 1 to 30 parts by weight of a single metal humate, 15 to 35 parts by weight of glycerol, 3 to 8 parts by weight of sodium lignosulfonate, 0.3 to 5 parts by weight of potassium pyrophosphate, and 25 to 50 parts by weight of pure water. This invention can achieve uniform and firm dyeing of ammonium polyphosphate without damaging its water solubility and fertilizer efficacy. The process is simple and the cost is controllable.

The utility model discloses a preparation device of a humic acid-containing water-soluble bacterial fertilizer capable of promoting growth and increasing yield. The preparation device of the humic acid-containing water-soluble bacterial fertilizer capable of promoting growth and increasing yield comprises a tank body, a cover plate which is arranged at the opening position of the tank body and is matched with the tank body for use, a feed port and a vertically arranged driving motor which are arranged on the cover plate, and a vertically arranged stirring shaft which is arranged in the tank body and is connected with the driving motor, a six-arrow-blade disc turbine stirrer and a three-blade wheel stirrer which are respectively positioned in the middle of the stirring shaft and at the bottom of the stirring shaft are distributed on the stirring shaft. Stirring and mixing of mineral source potassium humate, urea, potassium pyrophosphate, potassium nitrate, monopotassium phosphate, orthophosphoric acid, Tween 80, sodium carboxymethyl cellulose, propylene glycol, bacillus amyloliquefaciens subsp. Plantarum thallus coating liquid and water are fully realized by utilizing a six-arrow-leaf disc turbine stirrer and a three-blade wheel stirrer on a stirring shaft; and obtaining the humic acid-containing water-soluble bacterial fertilizer at a preset temperature.

This invention discloses a rose essential oil sleep-aiding latex pillow and its processing method. The latex pillow comprises the following components in parts by weight: 90-100 parts natural latex, 1-9 parts sulfur, 1-5 parts vulcanization accelerator, 1.5-2 parts anti-aging agent, 1-6 parts zinc oxide, 0.5-2 parts sodium fluorosilicate, 1-3 parts potassium ricinoleate, 0.1-2 parts potassium oleate, 0.1-2 parts potassium pyrophosphate, 0.00001-0.001 parts red pigment, and 0.0001-0.1 parts modified rose essential oil. The latex pillow is light pink in color, with the pigment content less than one-thousandth, and does not fade after washing. The modified rose essential oil has a fragrant rose scent. The natural latex content of the rose essential oil sleep-aiding latex pillow reaches 94%. The latex pillow prepared by this invention promotes sleep and is convenient and reliable.

The invention discloses an electrolytic copper foil and an electrolytic copper foil surface treatment process, and relates to the field of electrolytic copper foil preparation. The process conditions of ashing I are as follows: the temperature of an ashing vinasse solution is 20-35 DEG C, the concentration of zinc ions is 3.0-5.0 g / L, the concentration of nickel ions is 1.5-2.5 g / L, the concentration of potassium pyrophosphate is 100-120 g / L, the pH value is 9.5-10.5, the liquid inlet flow is 3-8 m < 3 > / h, the current density of a liquid inlet end is 3-5 A / dm < 2 >, and the current density of a liquid outlet end is 2-3 A / dm < 2 >; the process conditions of ashing II are as follows: the temperature of the ashing vinasse solution is 20-35 DEG C, the zinc ion concentration is 4-6g / L, the nickel ion concentration is 1.0-1.5 g / L, the potassium pyrophosphate concentration is 100-120g / L, the pH value is 9.0-9.5, the liquid inlet flow is 3-8m < 3 > / h, the current density at the liquid inlet end is 3-5A / dm < 2 >, and the current density at the liquid outlet end is 2-3A / dm < 2 >; through the design, the anti-stripping strength of the electrolytic copper foil is improved.

The invention relates to a preparation method of a solution for treating phosphorus-containing wastewater and a sewage treatment method, and the preparation method comprises the following steps: providing raw materials including calcium oxide, sodium sulfate, potassium pyrophosphate, sodium nitrate, sodium cellulose and water; dissolving sodium sulfate, potassium pyrophosphate and sodium cellulose in water to obtain a first semi-finished product solution, and dissolving calcium oxide and sodium nitrate in water to obtain a second semi-finished product solution; aging the first semi-finished product solution and the second semi-finished product solution; mixing the aged first semi-finished product solution with the aged second semi-finished product solution to obtain a third semi-finished product solution; aging the third semi-finished product solution; and diluting the aged third semi-finished product solution to obtain the solution for treating the phosphorus-containing sewage. On the premise that a stirring device is not added, a uniform and stable suspension solution can be formed, the energy consumption and the cost are reduced, the adding amount of lime can be accurately controlled, and the process management difficulty is reduced.

The invention discloses a composition formula for cleaning a school uniform. The composition formula is prepared from the following components: 15 to 20 parts of alkyl glycoside, 8 to 12 parts of cocamidopropyl betaine, 1 to 3 parts of EDTA (Ethylene Diamine Tetraacetic Acid)-disodium, 3 to 5 parts of sodium citrate, 2 to 4 parts of potassium pyrophosphate, 5 to 10 parts of emulsion decomposer, 1 to 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 to 1.5 parts of tea tree essential oil, 0.1 to 0.3 part of stabilizer and the balance of solvent. The preparation process comprises the following steps: firstly adding deionized water according to a formula ratio into a reaction container, then adding alkyl glycoside and cocamidopropyl betaine, then adding EDTA-disodium, sodium citrate, potassium pyrophosphate and polyethylene glycol 400, and finally adding compound enzyme, polyhexamethylene biguanide hydrochloride, tea tree essential oil and xanthan gum. According to the present invention, with the composition, the efficient decontamination and the mild clothes protection can be achieved by compounding the surfactant, the synergist and the functional auxiliary agent according to the fabric, the stain and other requirements of the school uniform cleaning so as to provide the school uniform cleaning composition with the good market prospect in the fields of laundry detergents, washing soaps, soaking washing powder, explosion salt, soap powder and cleaning paste.

The present invention discloses a gun-black tin-nickel alloy electroplating and electrolytic protection process. The electroplating process comprises: 240-280 g / L potassium pyrophosphate, 50-60 g / L nickel chloride hexahydrate, 7-9 g / L stannous chloride dihydrate, 1-2 g / L lanthanum chloride or praseodymium chloride, 13-18 g / L potassium thiocyanate, 0.6-1.8 g / L methionine, 20-30 g / L ammonium citrate, 4-6 g / L disodium ethylenediaminetetraacetic acid, a pH range of 7.8-8.2, a plating bath temperature of 35-40°C, a cathode current density of 1-3 A / dm2, and a cathode travel of 3-5 m / min. The electrolytic protection process is as follows: 2-5 g / L cerium chloride, 2-5 g / L sodium molybdate, 15-30 g / L sodium hydroxyethylidene diphosphonate, 100-150 g / L anhydrous potassium carbonate, pH range 11-13, room temperature operation, cathode current density 0.5-1.2 A / dm², using the plated part as the cathode and the titanium plate as the anode, and electrolysis for 60-120 seconds. The prepared gunmetal black tin-nickel alloy plated part was subjected to a neutral salt spray test for 96 hours in accordance with GB / T 10125-2021 "Artificial Atmosphere Corrosion Test Salt Spray Test", and no corrosive products were generated on the surface of the coating. The gunmetal black tin-nickel alloy electroplating and electrolysis process of the present invention improves the corrosion resistance of the coating and solves the high pollution problem of the dichromate electrolytic protection method.

The invention discloses a liquid fertilizer for promoting durian expansion and a preparation method thereof, and belongs to the technical field of agricultural fertilizers. The liquid fertilizer is prepared from the following components in mass volume ratio: 450 to 500g / L of potassium pyrophosphate, 60 to 70g / L of ammonium polyphosphate, 2 to 5g / L of benzylamine and gibberellic acid compounding agent, EDTA (Ethylene Diamine Tetraacetic Acid) chelated calcium, EDTA chelated magnesium and the like, and the balance of deionized water. The preparation method comprises the following steps: weighing the raw materials, preparing the basic nutrient solution, adding the medium trace elements and the active components, adding the stabilizer, fixing the volume, filtering, sub-packaging and the like. During application, a mode of combining foliage spraying and root irrigation after dilution is adopted. The formula is high in pertinence, all the components have a synergistic effect, the weight of a single durian fruit can be remarkably increased, the fruit cracking rate is reduced, the fruit sweetness is improved, the components are safe and environmentally friendly, the preparation technology is simple, stability is good, the fertilizer is suitable for large-scale production and durian planting application and popularization, and the planting economic benefits can be effectively increased.

The application provides an anti-high-temperature and anti-pollution organic salt well completion fluid and a preparation method thereof, and raw materials of the well completion fluid include, in terms of weight parts, 100 parts of water, 25-30 parts of potassium formate, 100-130 parts of potassium pyrophosphate, 0.3-0.7 parts of a high-temperature tackifying and filtrate-reducing agent, 1-3 parts of a high-temperature filtrate-reducing agent, 2-5 parts of a manganese powder plugging agent, 0.5-1.5 parts of triphosphite, 0.1-0.3 parts of tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester, 1-2 parts of polyethylene oxide-polypropylene oxide copolymer, 1-3 parts of nano silicon dioxide, 0.5-1.5 parts of sodium carboxymethyl cellulose and 0.3-0.8 parts of polyacrylamide. The anti-high-temperature and anti-pollution organic salt well completion fluid system has good plugging property, can reduce formation filtration and effectively protects a reservoir.

The application relates to a polyanion sodium ion battery positive electrode composite material, and belongs to the technical field of sodium ion batteries. The chemical expression of the positive electrode composite material is sintered by compounding and sintering of specific design carbon-doped potassium pyrophosphate iron powder and a sodium pyrophosphate iron phosphate matrix. The carbon-doped potassium pyrophosphate iron is prepared by a vacuum calcination process by using a structure control agent synthesized by p-ethylphenylthiophenol and triallylamine, and the unique space symmetry structure can chelate iron and potassium ions at the molecular level, form a uniform precursor, and produce an ultra-microstructure wrapped by an edge brittle carbide after calcination. The composite material constructs a continuous three-dimensional electron conductive network and a long-range ion channel in the NFPP matrix, forms an ion conductivity transition zone at the phase interface, significantly improves the ion migration efficiency, and effectively solves the technical bottleneck of poor high-rate performance of the NFPP material.

This invention discloses an defoamer for produced water from natural gas wells and its preparation method, relating to the field of oil and gas field water treatment technology. The defoamer comprises modified organosilicon, modified hydrogenated rosin glycerol ester, modified alkyl glycoside, potassium pyrophosphate, polyethylene glycol monooleate, plant-based dicarboxylic acid ester, and deionized water. The modified organosilicon is obtained by grafting polydimethylsiloxane with terminal hydroxyl polyether and then modifying it with low-carbon carboxylic anhydride. The modified hydrogenated rosin glycerol ester is obtained by esterifying hydrogenated rosin with glycerol and then modifying it with polyoxyethylene branching. The modified alkyl glycoside is obtained by etherification and condensation of alkyl glycoside with small-molecule polyol and then modifying it with weak phosphonate. This invention addresses the complex conditions of high-altitude gas fields, characterized by high temperature, low pressure, high fine silica particles, and high humic content. It solves the problems of existing defoamers, such as easy solidification and stratification at low temperatures, poor fluidity, decreased activity, easy clogging of pipelines, and difficulty in breaking complex foams, making it suitable for the complex conditions of high-altitude gas fields.

The invention discloses a production method of ultralow-density potassium pyrophosphate, which comprises the following steps: mixing phosphoric acid and liquid potassium, preserving heat until slurry is qualified, then cooling, adding hydrogen peroxide for reaction, finally filtering, spray-drying in a polymerization furnace, and polymerizing to obtain the ultralow-density potassium pyrophosphate. Wherein when reaction slurry enters the polymerization furnace, a nozzle with an S-shaped pipeline is adopted for spraying, and spray drying and polymerization reaction are carried out. The potassium pyrophosphate product with lower density, more uniform granularity and better fluidity can be prepared, the product quality is more stable, and compared with a common potassium pyrophosphate product, the profit is higher.

The invention provides a flight control fertilizer composition for promoting wheat growth and increasing yield as well as a preparation method and application thereof, and relates to the technical field of agricultural fertilizers. The invention relates to a flight control fertilizer composition. The seaweed preservative is prepared from the following raw materials: 240 to 320 parts of an amino acid mixture, 40 to 65 parts of an enzymolysis seaweed extract, 6 to 15 parts of sodium dodecyl benzene sulfonate, 6 to 15 parts of sodium alkyl naphthalene sulfonate, 6 to 15 parts of sodium dodecyl sulfate, 110 to 160 parts of anhydrous dipotassium phosphate, 160 to 200 parts of potassium pyrophosphate, 20 to 40 parts of ethylene glycol and 6 to 15 parts of zinc sodium ethylene diamine tetraacetate. The amino acid mixture comprises the following components: aspartic acid, glutamic acid and arginine; the preparation method comprises the following steps: carrying out freeze thawing pretreatment on brown algae, and carrying out enzymolysis treatment by using cellulase, alginate lyase and mannase, so as to obtain the enzymolysis seaweed extract. All the components interact with one another, so that the synergistic effects of promoting wheat growth and germination and increasing the yield are achieved.

The invention provides a novel ship boiler water treatment agent. The invention relates to a novel ship boiler water treatment agent, which comprises the following components by weight: 0.1-1% of hydroquinone; 20 to 30% of DEHA (diethyhexylhydroxylamine 10 to 20% of sodium hexametaphosphate; 5-10% of potassium pyrophosphate; 5-10% of polymaleic acid; 0.1 to 1% of a bio-based surfactant; 5 to 20 percent of NN (N, N-diethylhydroxylamine); and the balance of pure water. The invention provides a novel ship boiler water treatment agent which is prepared by compounding hydroquinone, DEHA, sodium hexametaphosphate, potassium pyrophosphate, polymaleic acid, a bio-based surfactant, NN diethylhydroxylamine and other components, and a dynamic chelation-dispersion system and a nonionic double-effect oxygen removal environment are constructed. According to the present invention, the efficient deoxidizing agent has characteristics of simple preparation process, easy operation, low cost, easy implementation, multi-stage chelating and crystal nucleus steric dispersion on calcium and magnesium ions, significant effects of rapid deoxidizing speed, strong old scale stripping ability and the like, can effectively cope with water quality fluctuation under complex working conditions of ships, can achieve efficient deoxidizing, can provide excellent scale inhibition and old scale self-cleaning functions, and can meet the treatment requirements of complex working conditions of ship boilers.

The invention discloses a lithium battery copper foil passivation method based on electro-deposition, which comprises the following steps: stripping a lithium battery copper foil by a cathode roller, directly immersing the lithium battery copper foil as a cathode into a passivation solution, and depositing a nickel-zinc potassium pyrophosphate hybrid composite passivation layer on the surface of the lithium battery copper foil through pulse electroplating, the nickel-zinc potassium pyrophosphate hybrid composite passivation layer comprises a continuous metal framework formed by nickel-zinc alloy and potassium pyrophosphate which is filled in pores of the metal framework. According to the method, zinc sulfate, nickel sulfate and potassium pyrophosphate are used as passivation solutions, and a nickel-zinc potassium pyrophosphate hybrid composite passivation layer is deposited on the surface of a lithium battery copper foil through pulse electroplating; the passivation film layer is uniform and has excellent bonding property with the lithium battery copper foil; the nickel-zinc potassium pyrophosphate hybrid composite passivation layer forms a protection layer on the surface of the copper foil, nickel-zinc alloy framework pores are filled with potassium pyrophosphate, an oxygen diffusion channel is blocked, the passivation layer is preferentially oxidized at high temperature to generate a compact ZnO / NiO mixed oxide, and further oxidation of a copper matrix is inhibited.