137 results about "Hydroxyethylidene Diphosphonic Acid" patented technology

The invention discloses a multi-element solid waste synergistic excitation road material and a preparation method thereof. The multi-element solid waste synergistic excitation road material comprises the following raw material components: an activated matrix material (consisting of 85-90% of red mud, 7-15% of carbide slag and 3-5% of ardealite), and silica fume, 1-hydroxyethylidene-1, 1-diphosphonic acid, anhydrous sodium sulfate and water which respectively account for 4-6%, 0.2-0.4%, 0.8-1.2% and 30% of the mass of the activated matrix material. Pores are filled with silica fume in the raw materials, and C-S-H gel with low calcium-silicon ratio is generated, so that a water migration channel is blocked; hydroxyethylidene-1, 1-diphosphonic acid is chelated with free metal ions, saltpetering and ion interference are inhibited, and the ettringite structure is stabilized; carbide slag and ardealite cooperate to destroy a red mud silicon-aluminum network, accelerate dissolution of active ions and promote crystal generation; the anhydrous sodium sulfate accelerates formation of an ettringite framework through exogenous SO4 < 2->; the strength and water stability of the road material can be effectively improved. The raw materials are mainly industrial solid wastes, so that the consumption of natural resources is remarkably reduced, and the efficient collaborative consumption of a large amount of solid wastes is realized.

The invention relates to the technical field of precious metal recovery, in particular to a process for separating precious metal from copper-nickel smelting waste, which comprises the following steps: crushing and grading the waste, adding a sulfuric acid solution containing etidronic acid, leaching, and washing, drying and crushing filter residues to obtain a pretreated material; mixing the pretreated material with a sodium peroxide-sodium carbonate composite flux, roasting, leaching with water, and filtering to obtain a filter residue B; adding a leaching agent containing hydrochloric acid, sodium chlorate and 1, 2-cyclohexanediamine tetraacetic acid into the filter residue B according to the ratio of 1: 3-1: 5, and filtering to obtain filtrate C and filter residue C; adjusting the pH value of the filtrate C to 1.5-2.5, adding an ethanol solution of sodium N, N-diethyldithiocarbamate, precipitating, washing and calcining to obtain sponge palladium; adding ammonium chloride into the filtrate D, precipitating and calcining to obtain sponge platinum; and leaching the filter residue C by using a hydrochloric acid-chloroauric acid mixed solution containing diphenylthiourea, and replacing and calcining zinc powder to obtain crude gold. According to the process, the leaching rates of platinum, palladium and gold and the product purity are greatly improved; flux and reagent systems are optimized, consumption and energy consumption are reduced, waste liquid treatment is matched for up-to-standard discharge, and efficient resource recovery and environment-friendly cooperation are achieved.

The invention relates to the field of water treatment, and discloses a scale and corrosion inhibitor for seawater circulating cooling water, which is prepared from phosphonic acid grafted maleic anhydride-acrylic acid copolymer, hydroxyethylidene diphosphonic acid, amino trimethylene phosphonic acid, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N- The anti-corrosion coating is prepared from the following raw materials: N, N-diethylaminomethyl-benzotriazole, gamma-aminopropyltriethoxysilane, zinc salt and a polyoxyethylene-polyoxypropylene block copolymer. The core of the invention is that all the raw material components form the thermo-sensitive polyelectrolyte compound through a self-assembly process. The compound is stably dispersed at low temperature by utilizing the cloud point effect of the block copolymer, and is subjected to phase change and preferential deposition on a high-temperature heat exchange surface, so that targeted and efficient delivery of various active components is realized. According to the invention, the problems of incompatibility of components and poor stability of a traditional compound agent are solved, the product has excellent storage stability, and efficient and synergistic corrosion and scaling control can be realized under high-temperature and high-salinity working conditions.

The invention discloses a polyamide acid-resistant nanofiltration membrane and arsenic removal application thereof in hair dye preparation. According to the amide acid-resistant nanofiltration membrane, a polyamine monomer and trimesoyl chloride are subjected to an interface reaction on an ultrafiltration supporting bottom membrane, and the polyamide acid-resistant nanofiltration membrane containing the Telogen structure is obtained. According to the method for removing the arsenic in the hydroxyethyl diphosphoric acid, a polyamide acid-resistant nanofiltration membrane containing a Troger structure is adopted for at least one time of filtration treatment, the concentration of arsenate in the hydroxyethyl diphosphoric acid after secondary filtration treatment is reduced to 4.60 mg / kg from 480.02 mg / kg, and the arsenic content of the hair dye prepared from the hydroxyethyl diphosphoric acid is smaller than 0.07 mg / kg. According to the polyamide acid-resistant nanofiltration membrane containing the Troger structure, which is obtained by adopting a limited preparation method, the acid resistance is greatly improved, the separation selectivity is higher, arsenic in hydroxyethyl diphosphate can be effectively removed, and the arsenic content in a hair dye is greatly reduced.

The invention provides an anodic oxidation passivation method of a neodymium-iron-boron permanent magnet zinc coating, which comprises the following steps of: performing electrochemical anodic oxidation by taking a neodymium-iron-boron permanent magnet with a zinc coating on the surface as an anode, a Pt sheet as a cathode and a passivation solution as an electrolyte, forming a passivation layer on the surface of the neodymium-iron-boron permanent magnet with the zinc coating on the surface, and cleaning and drying to obtain the neodymium-iron-boron permanent magnet with the zinc coating on the surface. A chromium-free passivation film is formed on the neodymium-iron-boron permanent magnet zinc coating, and passivation of the neodymium-iron-boron permanent magnet zinc coating is completed; the passivation solution is prepared from 10 g / L to 20 g / L of molybdate, 10 g / L to 15 g / L of ammonium fluozirconate, 1 g / L to 10 g / L of etidronic acid, 1 g / L to 10 g / L of sodium dihydrogen phosphate, 1 g / L to 10 g / L of nitric acid, 1 g / L to 10 g / L of phosphoric acid and the balance distilled water. According to the method disclosed by the invention, a complete, uniform and compact passivation film is formed on the surface of the zinc coating after passivation, the corrosion potential is improved while the corrosion current is effectively reduced, and the time for generating a rust spot in a salt spray test exceeds 72 hours.

The invention relates to the technical field of water treatment agents, and particularly discloses an anti-corrosion deoxidizing composite agent for geothermal well recharge water and a preparation method of the anti-corrosion deoxidizing composite agent. The invention relates to an anti-corrosion and deoxidizing composite agent for geothermal well recharge water. The anti-corrosion and deoxidizing composite agent comprises the following raw materials: 30-40 parts of double modified sodium sulfite, 10-20 parts of a corrosion inhibitor, 8-15 parts of a scale inhibitor, 5-10 parts of amino trimethylene phosphonic acid, 5-10 parts of etidronic acid, 3-8 parts of polyethylene glycol monomethyl ether acrylate and 40-50 parts of deionized water. The dual-modified sodium sulfite is obtained by sequentially modifying sodium sulfite with a silane coupling agent and acrylic acid. The corrosion-resistant and oxygen-removing composite agent has the advantage of being high in oxygen-removing efficiency stability, the corrosion-resistant and scale-inhibiting functions are synchronously and synergistically improved on the basis that the oxygen-removing efficiency stability is guaranteed, and the complex working condition requirements of geothermal well recharge are completely met.

The invention relates to an all-vanadium redox flow battery positive electrode electrolyte additive, a preparation method, a positive electrode electrolyte and application, and relates to the technical field of all-vanadium redox flow battery electrolytes.The all-vanadium redox flow battery positive electrode electrolyte additive comprises a main chelating agent, an auxiliary chelating agent, a pH buffering agent and a dispersing agent, the main chelating agent is selected from one or more than two of citric acid, tartaric acid, 1-hydroxyethylidene-1, 1-diphosphonic acid and trisodium methylglycine diacetate, and the auxiliary chelating agent is selected from one or more than two of disodium ethylene diamine tetraacetate, trisodium nitrilotriacetate and tetrasodium glutamate diacetate; the mass ratio of the pH buffering agent to the main chelating agent to the auxiliary chelating agent to the dispersing agent is (3.6-4.1): (0.6-1.5): (2.5-3.2): (1.7-2.5). According to the positive electrode electrolyte additive for the all-vanadium redox flow battery, the electrolyte has a remarkable high-temperature anti-precipitation effect, the energy density and the electrochemical performance are not sacrificed, and the preparation process is simple and controllable.

The invention relates to the field of photoelectrochemistry, in particular to a photo-anode based on phosphonic acid chelation and photoelectrochemistry activation and a preparation method of the photo-anode. The invention aims to provide a deep-energy-level defect dynamic passivation method based on phosphonic acid chelation and photoelectrochemical synergistic activation, which comprises the following steps: introducing 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP) molecules (ZISH) on the surface of a zinc-indium-sulfur (ZIS) photo-anode in a low-temperature water bath manner, and carrying out chelation reaction on the molecules and Zn sites on the surface in a photoelectrochemical activation manner, so as to obtain the deep-energy-level defect dynamic passivation method based on phosphonic acid chelation and photoelectrochemical synergistic activation. And a stable Zn-O-P coordination structure is formed. Under the action of photoelectric bias, the structure can reconstruct a Zn-S frame in situ, adjust the coordination number of Zn and convert a deep trap into a shallow energy level state (ZISA), so that interface recombination is effectively inhibited while a high hole injection rate is maintained.

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 relates to the technical field of etching solutions, and discloses a molybdenum-aluminum-niobium etching solution for a TFT-LCD (Thin Film Transistor Liquid Crystal Display), which comprises the following components in percentage by mass: 50 to 60 percent of phosphoric acid, 3 to 8 percent of nitric acid, 5 to 10 percent of glacial acetic acid, 1 to 5 percent of aluminum nitrate, 0.1 to 0.5 percent of diphenyl thiourea, 1 to 5 percent of etidronic acid, 3.0 to 5.0 percent of sodium hexametaphosphate, 0.1 to 0.2 percent of fatty alcohol-polyoxyethylene ether, 0.5 to 0.8 percent of amino trimethylene phosphonic acid and the balance of ultrapure water. The invention further discloses a preparation method of the molybdenum-aluminum-niobium etching solution. According to the invention, a phosphorus nitrate vinegar system, a composite additive, a novel corrosion inhibitor, a metal ion chelating agent and a surfactant matched with the etching liquid are adopted, so that the molybdenum-aluminum-niobium multi-layer composite metal film can be simultaneously etched at one time; the etching solution has the advantages of being uniform in etching, capable of inhibiting Mo / Nb etching, high in selectivity, controllable in etching rate, free of residues, long in service life, high in stability and the like.

The application discloses an oil and gas field polymer solution viscosity protection system with improved ferrous ion tolerance, and belongs to the technical field of oil and gas field chemicals.The system comprises the following components in mass percentage: 5-10% of a ferrous ion stabilizer, 10-20% of a free radical capturing agent, 10-20% of a structure reinforcing agent, 5-10% of a synergist, and the balance of water; the ferrous ion stabilizer is at least one selected from sodium gluconate, potassium gluconate, diethylene triamine pentaacetic acid and hydroxyethylidene diphosphonic acid; the free radical capturing agent is a compound containing phenolic hydroxyl; the structure reinforcing agent is an imidazoline compound; and the synergist is an aldehyde compound.The application method of the viscosity protection system is as follows: the viscosity protection system is first added into liquid water, polymer powder is then added, a gel breaker is further added, and stirring is uniformly performed to obtain a polymer solution.The viscosity protection system significantly reduces the influence of ferrous ions on the viscosity of the polymer solution, and improves the application effect of polyacrylamide substances in the field of oil and gas fields.

The present application belongs to the technical field of cleaning products, and particularly relates to a high-temperature oil stain removing stove cleaner as well as a preparation method and application thereof. The high-temperature oil stain removing stove cleaner provided by the present application comprises the following components and mass fractions: 11-33 parts of an alkaline additive, 1-2 parts of hydroxyethylidene diphosphonic acid, 3-6 parts of a non-ionic surfactant, 4-8 parts of a solvent, 1-3 parts of a solubilizer, 1-3 parts of sodium xylene sulfonate, and 45-79 parts of water; the solvent comprises ethylene glycol monobutyl ether and diethylene glycol ethyl ether. The high-temperature oil stain removing stove cleaner provided by the present application has the advantages of simple cleaning method, high-temperature oil removing effect, good stain removing and oil scale removing effect on commercial kitchen utensils, high safety, no corrosion to metal, simple raw material composition, and no need to add a defoaming agent.

The invention belongs to the technical field of stripping agents, and particularly relates to a slime stripping agent and a preparation method and application thereof. The slime stripping agent disclosed by the invention is prepared from dodecyl dimethyl benzyl amine bromide, dichlorophenol, isothiazolinone, polyoxyethylene alkylolamide, hydroxyethylidene diphosphonic acid, dimethylformamide and sodium dodecyl benzene sulfonate. Through the combined action of the specific components, the slime stripping agent has good stripping capacity and can rapidly permeate and disintegrate slime, dirt and biological membranes attached to the surface of equipment, the cleanliness and operation efficiency of the equipment are recovered, and equipment blockage and performance reduction caused by slime accumulation are effectively avoided; meanwhile, the high killing effect on sulfate reducing bacteria and nitrifying bacteria is achieved.

The invention belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil extraction of oil and gas fields and a preparation method thereof. The desulfurizing agent for oil extraction of the oil and gas field is prepared from the following raw materials: N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture, ammonium molybdate, lysine sodium, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate and the balance of water. According to the desulfurizing agent for oil extraction of the oil-gas field, water is used as a solvent, N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture and ammonium molybdate in raw materials are used as main desulfurizing components to remove organic sulfur and inorganic sulfur, and lysine sodium, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added, so that the desulfurizing agent for oil extraction of the oil-gas field is obtained. Due to the synergistic effect of the raw materials, the efficient removal of inorganic sulfur and organic sulfur in oil extraction of an oil and gas field is realized.

The application discloses a layered silicate gangue inhibitor for fine-grained copper ore flotation and a preparation method thereof. The inhibitor is composed of the following components: modified polysaccharide organic polymer 15-30%, sodium hexametaphosphate 10-30%, acrylic acid 7-15%, acrylamide 1-5%, ammonium persulfate 2-5%, hydroxyethylidene diphosphonic acid 5-15%, aluminum sulfate 2-5%, and deionized water in a residual amount. The preparation method comprises the following steps: mixing modified polysaccharide and deionized water according to a mass ratio of 1:1-1:2 to prepare solution A; polymerizing acrylic acid and acrylamide to prepare solution B; mixing solution A and solution B, and adding a formula amount of sodium hexametaphosphate to react; then adding a formula amount of hydroxyethylidene diphosphonic acid and a formula amount of aluminum sulfate to carry out complex adjustment; and finally, aging, filtering and obtaining the product. The inhibitor has a strong selective inhibiting effect on talc, phlogopite and other layered silicate gangues, can significantly improve the copper concentrate grade and recovery rate, has a small dosage, is non-toxic and environment-friendly, and can be biodegraded.

The invention discloses a phosphating solution based on electric triggering and bionic template cooperative regulation and control as well as a use method and application thereof, and belongs to the technical field of phosphating solutions. The phosphating solution comprises the following components: 5-60 g / L of a phosphating precursor; 0.1 g / L to 10.0 g / L of a bionic template agent; 0.5 g / L to 20 g / L of a nanometer reinforcing phase; 7-65 g / L of a metal ion source; 0.1-3.0 g / L of an oxidizing agent; the pH regulator is used for regulating the pH value to 3.5 to 6.0; and the balance of deionized water. The phosphating precursor is one or more of phytic acid, amino trimethylene phosphonic acid and 1-hydroxyethylidene-1, 1-diphosphonic acid; when the phosphating solution is used, a workpiece is used as a cathode to apply an electric field. The phosphating solution is used for metal protection or metal drawing. A phosphating film formed by the phosphating solution based on electric triggering and bionic template cooperative regulation under the action of an electric field has excellent corrosion resistance, adhesive force and wear resistance, and sediment in the phosphating process is few.

This invention relates to the field of photoelectrochemistry, and more particularly to a photoanode based on phosphonic acid chelation and photoelectrochemical activation, and its preparation method. The purpose of this invention is to provide a method for dynamic passivation of deep-level defects based on the synergistic activation of phosphonic acid chelation and photoelectrochemical activation. 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) molecules (ZISH) are introduced onto the surface of a zinc indium sulfide (ZIS) photoanode via a low-temperature water bath. Photoelectrochemical activation is then used to induce a chelation reaction between HEDP and Zn sites on the surface, forming a stable Zn–O–P coordination structure. Under photoelectric bias, this structure can reconstruct the Zn-S framework in situ, adjusting the coordination number of Zn and converting deep traps into shallow-level states (ZISA), thereby effectively suppressing interfacial recombination while maintaining a high hole injection rate.

The application belongs to the technical field of oil exploitation, and particularly relates to an acid liquid for acid treatment of an oil layer and a preparation method thereof. The preparation method is as follows: the specific steps of the preparation method are as follows: in a reactor, piperazine-1,4-diethyl sulfonate monosodium salt, ethanol and bromoalkane are added, heated to reflux, and during the reaction, sodium hydroxide solution is used to maintain pH 7-8; 1-bromo-6-(trimethylammonium) hexyl bromide is added, heated to reflux, and during the reaction, sodium hydroxide solution is used to maintain pH 8-9; vacuum distillation is performed to obtain a viscous solid, cyclohexane recrystallization is performed to obtain a solid, and the solid is dried at 90 DEG C overnight to obtain corrosion-inhibiting acid; hydrochloric acid, hydrofluoric acid, hydroxyethylidene diphosphonic acid, corrosion-inhibiting acid and water are added to the reactor, stirred uniformly, and the acid liquid is obtained. The acid liquid has the advantages of low corrosion rate and long acidification time.

The application discloses a kind of high-activity green cleaning agent, its preparation method and application, the high-activity green cleaning agent includes stock solution and diluent liquid;The stock solution is formed by esterification reaction by mixing and heating 2-ethylhexyl phosphate and hydroxyethylidene diphosphonic acid according to weight ratio 1.8-3:1;And / or the stock solution includes 2-ethylhexanol, phosphite, acetic acid-2-ethylhexyl ester, polyisobutylene succinic anhydride and ethylhexyl phosphate;The diluent liquid is formed by mixing according to weight ratio 1:4-3:7 by content >99% formaldehyde and oligomeric water cluster;The weight percentage of the stock solution is 0.8%-1.3%.The application also discloses fuel containing the above-mentioned high-activity green cleaning agent.The high-activity green cleaning agent of the application is a pure petroleum product, is a new type of fuel modifier, by changing the physical properties of fuel to achieve its synergistic effect, oil saving, carbon cleaning, emission reduction effect, suitable for popularization and application.

This invention discloses a nitrogen-sulfur co-doped multi-chamber carbon-supported copper nanocluster composite material and its preparation method. By integrating polyether F127, 2,6-diaminopyridine, sodium dodecylbenzenesulfonate, fulvic acid, and copper acetate (II), a semi-open and surface-fully embedded copper cluster multi-chamber carbon was successfully constructed. The surface of this multi-chamber carbon is rich in -NH2 and -SO3. ‑ With abundant active groups, it not only boasts a large specific surface area and ample adsorption sites, but also exhibits excellent anti-interference and wide pH adaptability. As an environmentally friendly material, it can simultaneously and efficiently adsorb and remove Cu²⁺ from electroplating wastewater. + Ni² + Pb² + Cd² + It contains heavy metals and organic complexing agents such as ethylenediaminetetraacetic acid (EDTA) and hydroxyethylidene diphosphonic acid (HEDDI). After electroplating wastewater treatment, it achieves convenient solid-liquid separation and recovery through centrifugation and filtration. After acid washing and alcohol washing regeneration, it exhibits excellent cycle stability. With its superior purification efficiency and recycling advantages, it has shown promising development potential in the field of electroplating wastewater treatment.

The invention provides HEDP (1-hydroxyethylidene-1, 1-diphosphonic acid) modified chitosan as well as a preparation method and application thereof. The preparation method comprises the following steps: activating chitosan; dropwise adding a 1-hydroxyethylidene-1, 1-diphosphonic acid solution into the activated chitosan solution, and carrying out constant-temperature stirring reaction under the protection of nitrogen; after the reaction liquid is cooled, ethanol is added to precipitate a grafted product, and the hydroxyethylidene diphosphonic acid modified chitosan is obtained. According to the hydroxyethylidene diphosphonic acid modified chitosan, hydroxyethylidene diphosphonic acid and natural polymer chitosan are grafted to form a polymer-based heavy metal trapping agent, synchronous and efficient removal of multiple metals in strongly acidic wastewater can be realized, and the pH value of the wastewater does not need to be pre-adjusted.

The invention relates to the technical field of concrete additives, and particularly discloses a method for rapidly synthesizing CSH gel at normal temperature. The CSH gel is generated by reacting sodium silicate and calcium chloride in a medium; the medium is a compound of water, a polymer dispersant, a chelating agent and nano silicon dioxide; the polymer dispersing agent is formed by compounding an etherified polycarboxylic acid water reducing agent, long-chain polyoxyethylene ether phosphate and an inorganic pigment dispersing agent; the chelating agent is a compound of 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP) and amino trimethylene phosphonic acid (ATMP). The CSH gel has the advantages that the production cost of the CSH gel is reduced, and the CSH gel can remarkably improve the strength of concrete.

Described herein are fabric softening compositions comprising a quaternary ammonium compound (e.g., an esterquat); a cationic polyquaternium polymer (e g., polyquaternium-7); a preservative system which comprises an organic acid (e.g., lactic acid or phosphonic acid); and 3-iodo-2-propynyl butylcarbamate (IPBC) or Dodecylguanidine Hydrochloride (DGH); and a phosphonic chelating agent (e.g., etidronic acid). Methods of making and using the fabric softening compositions are also described herein.

The invention discloses a complexing inhibitor for inhibiting redissolution of heavy metal sulfide as well as a preparation method and application of the complexing inhibitor. The complexing inhibitor is prepared by compounding the following three components: a component A which is a metal salt, a component B which is an organic sulfur medicament and a component C which is an organic non-sulfur medicament, wherein the mass ratio of the component A to the component B to the component C is (1-2): (1-3): (2-6); the component A is selected from dithiocarbamate, and the component B is selected from at least one of dithiocarbamate, mercaptobenzothiazole or sodium dimethyl dithiocarbamate; and the component C is selected from at least one of chitosan, polyethyleneimine or 1-hydroxyethylidene-1, 1-diphosphonic acid. The inhibitor is especially suitable for preventing excessive sulfur ions from complexing and dissolving precipitated heavy metal sulfide in industrial wastewater treatment, and effectively controlling the concentration of heavy metal ions to rise.

The invention discloses an electroplating disqualified cadmium layer stripping solution, a preparation method and a use method, and the electroplating disqualified cadmium layer stripping solution comprises 6-8 parts of sodium phytate, 1-3 parts of sodium nitrilotriacetate, 2-4 parts of borate, 5-10 parts of sodium bromate, 1-2 parts of sodium alkyl naphthalene sulfonate, 1-2 parts of glucoside, 5-8 parts of sodium nitrate, 3-5 parts of ammonia water, 2-4 parts of triol ethylamine, 4-6 parts of 1-hydroxyethylidene-1, 1-diphosphonic acid and 8-12 parts of ammonium persulfate. The total amount of the purified water is 100 parts, and the total amount of the purified water is 100 parts. The pH value of the deplating agent solution is alkaline, the problem of hydrogen evolution of a hydrogen sensitive material is solved, the risk of hydrogen embrittlement is avoided, and hydrogen removal is not needed after steel and iron materials are deplated; cadmium ion heavy metal pollution and sewage treatment difficulty exist, the stripped cadmium ions automatically generate precipitates, recycling is facilitated, and the sewage treatment difficulty is reduced; the metal deplating liquid is convenient to use and simple to operate, only unqualified products need to be put into the deplating liquid in a room-temperature environment, after a certain time, after a plating layer is completely removed, the unqualified products are washed with water, and a metal base material is not damaged.

The invention relates to an efficient bio-based fireproof heat-insulation antibacterial coating and a preparation method and application thereof.According to the system, renewable phytic acid serves as a core functional component, the phytic acid is modified through polyethylene glycol so as to optimize the compatibility and film forming stability of the phytic acid, and the coating is endowed with lasting antibacterial performance. Piperazine and 1-hydroxyethylidene-1, 1-diphosphonic acid react to prepare piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serving as a flame-retardant component, and the piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serves as an acid source / gas source synergistic unit of the intumescent flame-retardant system to promote rapid char formation and construction of an The preparation method comprises the following steps: reacting PEG modified phytic acid with piperazine hydroxyethylidene diphosphonate, introducing aerogel and gelatin, and carrying out blending dispersion and film formation to obtain the composite coating. Wherein the aerogel constructs a high-efficiency heat insulation framework by virtue of low heat conductivity, and the gelatin provides a film forming and interface bonding effect, so that the compactness and adhesive force of the coating are further improved. The coating can simultaneously realize multifunctional synergy of flame retardance, heat insulation, bacteriostasis and mildew prevention on the surface of a base material such as wood and the like.

The present application relates to a kind of special cleaning solution for oil stain cleaning in the processing of aluminum alloy parts, which replaces hydrocarbon cleaning solution.The method of the present application is as follows: long-chain alkyl glycoside (APG) and oleic acid polyethylene glycol ester (PEG) with good biodegradability are used as detergent, low molecular weight acrylic acid-acrylamide copolymer is compounded with phytic acid as corrosion inhibitor, triethanolamine, sodium tripolyphosphate, hydroxyethylidene diphosphonic acid (HTPE) and other washing aids are used as washing aids, and antioxidants, defoamers and other aids are added, to produce aluminum alloy parts special cleaning solution by composite process.The cleaning solution has good washing performance, very low corrosivity, good biodegradability and other advantages, and can completely replace the currently used hydrocarbon cleaning solution in production.

The invention relates to the technical field of electrochemical polishing solutions, in particular to a nickel-titanium alloy electrochemical polishing solution and a preparation method thereof.The nickel-titanium alloy electrochemical polishing solution is prepared from, by mass, 20-25 parts of sulfamic acid, 10-15 parts of citric acid, 2.5-3.5 parts of ammonium bifluoride, 0.5-1.2 parts of sodium fluoborate, 0.8-1.5 parts of molybdenum-vanadium composite passivator, 1.5-2.5 parts of 1-hydroxyethylidene-1, 1-diphosphonic acid and 0.2-0.4 part of polyaspartic acid. 0.1-0.3 part of a nonionic surfactant, 15-20 parts of a hydrophilic organic solvent and 35-45 parts of deionized water. Through the synergistic effect of the sulfamic acid-citric acid polybasic acid system and the molybdenum-vanadium composite passivating agent and the assistance of the specific non-ionic surface active agent, synchronous optimization of surface roughness and glossiness is achieved, and the corrosion resistance of the polished nickel-titanium alloy surface is remarkably improved.

The invention relates to the technical field of electrochemical energy storage materials and devices, and particularly discloses a negative electrode material and a preparation method and application thereof. The negative electrode material provided by the invention comprises the following raw material components in parts by mass: 8-10 parts of a three-dimensional heterojunction functional skeleton, 4-8 parts of an interface inducer, 1.5-2 parts of a composite precursor and 100 parts of an active substance, wherein the three-dimensional heterojunction functional framework is a carbon nano tube and tin dioxide which are combined by a covalent bond; the interface inducer comprises sodium phytate, 1-hydroxyethylidene-1, 1-diphosphonic acid and zirconium phosphate; the composite precursor is prepared from a polyvinylidene fluoride-hexafluoropropylene copolymer, silicon dioxide and perfluorinated sulfonic acid resin. The components and the preparation method of the negative electrode material are optimized, the negative electrode material is applied to the battery, the electrochemical performance and the corrosion resistance of the battery under the low-temperature condition can be obviously improved, and the hydrogen evolution potential is improved.

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.