51 results about "Metaphosphate" patented technology

A negative electrode material for secondary battery use includes silicon-containing particles and coating layers covering at least part of the surfaces of the silicon-containing particles. The silicon-containing particles each include an ion conductive phase and silicon phases dispersed in the ion conductive phase. The coating layers contain at least one phosphate compound selected from the group consisting of a phosphate compound, a polyphosphate compound, and a metaphosphate compound, each of which contains an anion represented by general formula (1):In general formula (1), A represents an organic group or an oxygen atom.

The invention belongs to the technical field of cables, and particularly relates to an explosion-proof cable and a preparation method thereof.The cable comprises a cable core, a metal explosion-proof layer and an outer sheath layer, the outer sheath layer is formed by extruding and wrapping an outer sheath layer material on the outer side of the metal explosion-proof layer, and the outer sheath layer material is made of polyvinyl chloride as a base material. According to the invention, wollastonite is taken as a raw material, a functional filler and the like are taken as additives, mixing and extrusion granulation are carried out to prepare the material, the functional filler is prepared by grafting a polymer modifier with a hyperbranched structure on the surface of the wollastonite, and the existence of the polymer modifier enables the wollastonite to exist in the material in the form of a network center, so that the mechanical strength of the material is enhanced; the structure of the high-molecular modifier contains phosphorus and silicon elements, and during combustion, the high-molecular modifier can react with wollastonite to form a calcium metaphosphate glass body and generate a calcium-phosphorus-silicate ceramic layer, and the calcium-phosphorus-silicate ceramic layer cooperates with a carbon layer generated by acid source catalysis, so that the flame retardant property of the material is greatly improved.

The invention discloses an iron-doped nickel-cobalt metaphosphate electrode material based on an oxide intermediate and a preparation method and application thereof, and relates to the technical field of supercapacitors, the preparation method comprises the following steps: preparing an electrolyte containing a nickel salt, a cobalt salt and an iron salt, and carrying out electro-deposition on a conductive substrate to obtain the iron-doped nickel-cobalt metaphosphate electrode material. A nickel-cobalt-iron layered double hydroxide precursor is obtained; sintering the nickel-cobalt-iron layered double hydroxide precursor to prepare an intermediate; and phosphating the intermediate by taking sodium hypophosphite as a phosphorus source to finish the preparation. The invention also discloses the iron-doped nickel-cobalt metaphosphate electrode material based on the oxide intermediate prepared by the method and an application of the iron-doped nickel-cobalt metaphosphate electrode material in preparation of a supercapacitor. Through a unique pre-oxidation process and substrate optimization, the electrochemical performance of the electrode material is remarkably improved, and the problems that an existing metaphosphate material is poor in conductivity and insufficient in active site are solved.

The invention provides a composite inorganic salt water-based quenching medium and a heat treatment method of a steering knuckle, and belongs to the technical field of heat treatment, the composite inorganic salt water-based quenching medium comprises the following components by weight: 1%-3% of sodium chloride, 10%-14% of pyrophosphate, 4%-6% of potassium sulfate, 3%-5% of hexametaphosphate, 3%-9% of an antirust preservative and the balance of water. According to the composite inorganic salt water-based quenching medium disclosed by the invention, in the heat treatment of the automobile steering knuckle, the three-stage cooling process is optimized through the synergistic effect of all inorganic salt components, so that the hardness and metallographic structure uniformity of the quenched steering knuckle are remarkably improved, and the rejection rate of the steering knuckle is remarkably reduced; the use temperature of the composite inorganic salt water-based quenching medium is wider than the applicable temperature range of the traditional PAG medium; and the medium-carbon alloy steel steering knuckle is quenched at the temperature of about 800 DEG C, the quenching temperature is reduced by 40-60 DEG C compared with the prior art, and the energy saving performance is improved.

The invention relates to a part made from synthetic graphite, preferably isostatic synthetic graphite, impregnated with aluminium metaphosphate Al(PO3)3, and characterised in that the aluminium metaphosphate content is at least 1% by weight for the cubic form and does not exceed 0.4% by weight, and preferably does not exceed 0.3% by weight, for monoclinic forms. Such a part has good resistance to oxidation and can be used under hydrothermal conditions.

A flame-retardant metal-resin composite material according to the present disclosure is a metal-resin composite material in which metal layers are laminated on both surfaces of a core material layer containing a resin. The core material layer contains a metal hydroxide, a resin having a specific polar group, and a flame retardant containing at least one compound selected from the group consisting of an inorganic polyphosphate compound, an inorganic phosphite compound, an inorganic phosphinate compound, an inorganic metaphosphate compound, a melamine compound, and a triazine compound.

The invention discloses a preparation method of water-soluble calcium phosphate, which comprises the following steps: S1, respectively preparing a phosphoric acid solution and a calcium carbonate suspension, and adding citric acid and hexametaphosphate into the phosphoric acid solution; s2, mixing the phosphoric acid solution and the calcium carbonate suspension, and reacting until the solution is clear; s3, performing spray drying to obtain a water-soluble calcium phosphate product. The whole reaction is simple, no redundant waste exists in the reaction process, and the production concept of green chemistry is met; the product is good in solubility, the calcium-phosphorus ratio is 2: 1, the solubility reaches 9g / 100ml water or above, calcium is not easy to separate out after the solution is placed, the product is relatively stable, the application field is wider, and the application effect is better.

The invention belongs to the technical field of electro-catalytic water decomposition, and discloses synthesis of a bimetallic metaphosphate / fluoride heterostructure and an application method in the aspect of energy catalysis. The invention aims to solve the technical problems of poor stability, low catalytic activity and difficulty in simultaneous preparation of multiple catalytic functions of the existing complete water splitting catalyst. According to the method, a precursor is constructed on a conductive substrate through a one-step hydrothermal method, and then the MF2-M2P4O12 / CC (M: Ni, Co) nano array catalyst is obtained through low-temperature solid-phase phosphorization and fluorination processes. The catalyst is a non-noble metal catalyst, the preparation cost of the catalyst is reduced, and the catalyst has excellent catalytic activity and stability, can be widely applied to HER, OER, UOR and urea oxidation assisted full water splitting reactions, and is a non-noble metal catalyst with multiple electro-catalysis functions at the same time.

The invention relates to anti-yellowing regenerated spandex and a preparation method thereof, the anti-yellowing regenerated spandex comprises recycled spandex, a chain extender and a chelating agent, the recycled spandex comprises one or more of spandex waste silk, spandex waste or spandex components of waste fabrics; the chain extender comprises a bifunctional epoxy compound; the chelating agent is prepared from one or more of triphenyl phosphate, tripolyphosphate, hexametaphosphate, amino trimethylene phosphonate and hydroxyethylidene diphosphonate. Recycled spandex is adopted as a main raw material, and yellowing of a product in the storage and use process is remarkably delayed on the basis of guaranteeing the comprehensive performance of the fiber through repolymerization and addition of specific functional auxiliaries.

The invention discloses a purification method of magnetite concentrate, and belongs to the technical field of extreme purification of magnetite concentrate. The purification method comprises the following steps: carrying out ultrafine grinding on a magnetite concentrate raw material, adding alkali metal hexametaphosphate and alkali metal silicate, carrying out flocculation desliming to obtain primarily purified magnetite, and adding a magnetite inhibitor, a composite collector and an activator into ore pulp containing the primarily purified magnetite for reverse flotation, the composite collecting agent comprises fatty amine and a zwitterionic surfactant, and the activating agent comprises a calcium compound and a rare earth compound. The separation and removal effects of gangue minerals and impurity metal elements are greatly improved through flocculation desliming and a specific flotation reagent system, the yield and recovery rate of the high-purity magnetite concentrate are improved while the grade of the magnetite concentrate is improved, and the method is simple, low in cost, small in reagent dosage in the flotation process, environmentally friendly and suitable for industrial application.

The invention relates to an optical cable belting material with high flame retardance and high resistivity, and belongs to the technical field of flame-retardant materials. The preparation method of the optical cable belting material comprises the step of coating the calcium carbonate powder and the intumescent flame retardant on a base material through vinyl acetate-ethylene copolymer emulsion and water to obtain the optical cable belting material. When the optical cable belting material is combusted, the calcium carbonate powder and the intumescent flame retardant are subjected to chemical reaction in flame combustion to form a calcium metaphosphate / carbonaceous composite flame-retardant coating, and the flame-retardant coating is constructed by embedding lamellar calcium metaphosphate continuous networks in a carbon layer. The calcium metaphosphate continuous network can control the combustion process of the composite coating, and the peak heat release rate and the smoke generation rate are remarkably reduced; and the expansion degree and the structural uniformity of the carbon residues are effectively improved, and a conductive path of a carbon layer is destroyed, so that the surface resistivity of the flame-retardant coating is improved. The preparation process is simple, the coating performance is excellent, and the coating is suitable for high-flame-retardant and high-resistivity optical cable belting materials.

The application belongs to the technical field of nanometer material synthesis, and particularly relates to a three-dimensional flower-like multi-level structure metaphosphate micro-nano material and a preparation method and application thereof. The micro-nano material has a three-dimensional flower-like multi-level structure formed by assembling metaphosphate nanosheets; the three-dimensional flower-like multi-level structure has a size of 5-8 microns, and the nanosheet has a thickness of 20-50 nm. The preparation method is to first prepare a precursor material through a solvothermal method, and then to obtain the micro-nano material through a high-temperature oxidation reaction and a phosphating reaction, and has the advantages of simple and controllable synthesis process and low cost. The multi-level structure metaphosphate micro-nano material prepared by the application has a large specific surface area and good structural stability, can shorten the ion and charge transmission path and expose more electrochemical active sites, has good electrochemical performance, can be used for preparing supercapacitor electrode materials and oxygen evolution reaction electrocatalysts, and has a good potential application prospect in the field of energy storage and conversion.

A tooth whitening chewing gum composition is disclosed that includes a combination of polyphosphates that enhances tooth whitening benefits with a minimal salty taste profile. In one embodiment, the tooth whitening chewing gum composition includes a gum base, a bulk sweetener, and about 0.5% to about 12% by weight, based on the total weight of the composition, of an alkali or alkaline earth metal pyrophosphate, an alkali or alkaline earth metal hexametaphosphate, or a combination thereof, wherein the alkali or alkaline earth metal pyrophosphate has a particle size, as determined using sieve analysis, such that less than 50% of the particles pass through a 25 mesh (707 micron) screen, and the alkali or alkaline earth metal hexametaphosphate has a particle size, as determined using sieve analysis, such that less than 50% of the particles pass through a 140 mesh (105 micron) screen.

The invention discloses a material for constructing a non-Newtonian fluid, the non-Newtonian fluid, a preparation method and a blast hole blocking device, and belongs to the technical field of blasting engineering. The material for constructing the non-Newtonian fluid is prepared from the following components in parts by mass: 53 to 77 parts of sodium bentonite, 10 to 18 parts of modified hectorite, 1 to 4 parts of water-soluble carbonate, 1 to 2 parts of water-soluble hexametaphosphate, 0.3 to 4.5 parts of polyethylene glycol and 0.2 to 4.5 parts of silicon dioxide. After the material for constructing the non-Newtonian fluid is mixed with water, the non-Newtonian fluid with high static viscosity and limited recovery time period can be formed, the limited recovery time is less than or equal to 5.8 s, and the static viscosity is greater than or equal to 8000 mPa.s, so that the non-Newtonian fluid has excellent impact load absorption efficiency and can well meet the blast hole filling requirement.

The invention relates to the technical field of battery materials, and discloses a lanthanum metaphosphate coated lithium cobalt oxide composite material and a preparation method thereof. The preparation method comprises the following steps: taking trivalent metal lanthanum salt and phosphate as raw materials, obtaining high-purity lanthanum metaphosphate through a solid phase method, then dispersing the lanthanum metaphosphate into a solvent, adding lithium cobalt oxide, and carrying out wet coating, so as to obtain the lithium cobalt oxide material coated with a lanthanum metaphosphate shell. The lanthanum metaphosphate coated lithium cobalt oxide composite material provided by the invention has excellent conductivity, rate capability and cycle performance.

A fuel cell or an electrolyser includes at least one electrode and at least one polymer electrolyte membrane. The electrode includes a catalyst system comprising a carrier metal oxide and a catalyst material. The catalyst material is formed by an electrically conductive metal phosphate in the form of a metaphosphate of the general chemical formula Mezn+2(PnO3n+1)z, where Me=metal, z=valency of the metal Me, and n is within the range of 1 to 10.

The invention discloses a silicon-carbon composite negative electrode material and a preparation method and application thereof. The silicon-carbon composite negative electrode material comprises an inner core and a coating layer coating the inner core, the inner core comprises one or more silicon nanowires with the pipe diameter of 2-10 nm and the pipe length of 10-20 nm, magnesium silicate is dispersed and distributed on the surface layers of the silicon nanowires, the magnesium silicate is one or two of Mg2SiO4 and MgSiO3, fast ion conductors are uniformly distributed on the surfaces of the nanowires, and the fast ion conductors are uniformly distributed on the surfaces of the nanowires. The fast ion conductor is one of lithium aluminate, lithium metaphosphate and lithium phosphate; and the coating layer is a high-conductivity outer carbon layer. The silicon-carbon composite negative electrode material provided by the invention has the advantages that the rate performance and the cycle performance of the material are improved, and the structural strength of the material is also improved.

The application discloses a kind of magnetite concentrate purification methods, belong to magnetite concentrate extreme purification technical field.The purification method is to carry out superfine grinding after magnetite concentrate raw materials are added alkali metal hexametaphosphate and alkali metal silicate and flocculation desliming, obtain preliminary purification magnetite, again to the ore pulp containing preliminary purification magnetite is added magnetite inhibitor, composite collector and activator and carries out reverse flotation, namely, wherein, the composite collector includes fatty amine and zwitterionic surfactant, and the activator includes calcium compound and rare earth compound.The application greatly improves the separation and removal effect of gangue mineral and impurity metal element by flocculation desliming and specific flotation reagent system, improves the grade of magnetite concentrate while improving the yield and recovery rate of high-purity magnetite concentrate, the method is simple, low in cost, small in dosage of reagent in flotation process, green and environmentally friendly, suitable for industrial application.

A nano-silicon-graphite composite negative electrode material with carbon coating and aluminum metaphosphate composite modification layer on surface and its preparation method are disclosed, which is mainly prepared from following components by mass percentage: 4-10 wt. % of aluminum metaphosphate, 10 wt. % of asphalt cracking carbon, 15 wt. % of spherical nano-silicon powder, and 71-65 wt. % of graphite powder. A nano-silicon powder is added to deionized water for ultrasonic dispersion to obtain a uniform dispersion, then graphite powder is added to mix uniformly, and then waterborne asphalt is added. After stirring and mixing evenly, spray drying is carried out, and the dried powder is compounded with metaphosphate for mechanical fusion. Finally, the same is transferred into vacuum furnace for high-temperature carbonization to obtain the product. The composite modification layer existing on the surface can well inhibit the corrosion of the nano-silicon material by electrolytes, alleviate volume expansion, improve electrical conductivity, and increase cycle life.

The invention belongs to the technical field of lithium ion batteries, and provides a modified lithium-rich manganese-based positive electrode material and a preparation method and application thereof. The modified lithium-rich manganese-based positive electrode material comprises a lithium-rich manganese-based matrix material inner core and a coating layer coating the surface of the lithium-rich manganese-based matrix material inner core; a cobalt element is doped in the lithium-rich manganese-based matrix material, the chemical general formula of the lithium-rich manganese-based matrix material is Li < 1 + a > (Ni < x > Co < y > Mn < 1-a-x-y >) < 1-a > O < 2 >, a is more than 0 and less than 1, x is more than 0, and y is more than or equal to 0.005 and less than or equal to 0.015; the raw material of the coating layer comprises polyanion metaphosphate, and the metaphosphate is a three-dimensional lattice-shaped crystal. According to the invention, trace cobalt element is doped in the core of the lithium-rich manganese-based matrix material and is cooperatively matched with the coating of metaphosphate, so that the problems of Li / Ni mixed arrangement phenomenon, serious interface side reaction and the like of the lithium-rich manganese-based cathode material are solved, and the electrochemical performance is more comprehensively and effectively improved.

The invention discloses an oral care composition containing oxilafluorine and condensed phosphate and application of the oral care composition, and belongs to the technical field of oral care, the oral care composition comprises the oxilafluorine and the condensed phosphate, and the mass ratio of the oxilafluorine to the condensed phosphate is (0.1-1.9): (0.5-8.0); the condensed phosphate is water-soluble condensed phosphate; the condensed phosphate comprises one or more of hexametaphosphate, tripolyphosphate and trimetaphosphate. According to the invention, it is found for the first time that compounding of the oxilafluorine and the specific condensed phosphate generates a significant synergistic effect, effective repair of a demineralization area on a secondary surface layer of enamel is realized, and the purpose of deep mineralization is achieved; the oxilafluorine can obviously relieve the stimulation effect of condensed phosphate on oral mucosa, the effect is particularly important for oral ulcer patients, and the use comfort of the oral care product can be obviously improved.

The invention discloses application of polyphosphate kinase BsPPK in synthesis of ATP (adenosine triphosphate). The amino acid sequence of the polyphosphate kinase BsPPK is as shown in SEQ ID NO. 1. In specific application, adenosine diphosphate or adenosine monophosphate is used as a phosphate receptor, polyphosphate is used as a phosphoric acid donor, and ATP is synthesized under the action of polyphosphate kinase BsPPK. The polyphosphate is selected from tripolyphosphate or hexametaphosphate. The invention also discloses an application of the polyphosphate kinase BsPPK in the synthesis of uridine diphosphate-galactose, and an application of the polyphosphate kinase BsPPK in the synthesis of lactosyl-N-tetrasaccharide. According to the method, the ATP is synthesized and regenerated by utilizing the polyphosphate kinase BsPPK, so that the reaction cost of UDP-Gal and LNT in-vitro synthesis routes is greatly reduced. The method has important significance on ATP regeneration and synthesis of UDP-Gal and galactosyl lactose derivatives, and has a wide application prospect.

The invention relates to the field of preparation of electrocatalytic ethanol oxidation catalysts, and discloses a high-stability catalytic material as well as preparation and application thereof. The catalytic material comprises a carbon nano tube as well as Pd particles and nickel metaphosphate which are loaded on the carbon nano tube; wherein on the basis of the total mass of the catalytic material, the mass content of the nickel metaphosphate is 20-60%. According to the catalytic material, good catalytic activity is guaranteed, and meanwhile the electro-catalytic stability of the catalytic material is effectively improved.

A synthetic graphite part, preferably isostatic, impregnated with aluminum metaphosphate Al(PO3)3, and characterized in that the aluminum metaphosphate content is at least 1 wt% for the cubic form and does not exceed 0.4 wt%, and preferably does not exceed 0.3 wt%, for the monoclinic forms. Such a part has good resistance to oxidation and can be used under hydrothermal conditions.

The invention provides a mineral-based composite agent for phosphorus and fluorine polluted water and an ecological restoration method, the mineral-based composite agent adopts a gradient shell-core structure microsphere, and comprises a core, a middle layer and a shell layer; the core comprises magnesium-aluminum layered double hydroxide which is induced and reconstructed by metaphosphate or polyphosphate, a calcium magnesium silicate glass phase and a first sodium alginate-chitosan bonding system; the middle layer comprises charcoal loaded with lanthanum-zirconium bimetal (hydrogen) oxide active sites, calcium peroxide microcapsules and a second sodium alginate-chitosan bonding system; the shell layer is coated with composite gel formed by sodium alginate and silica sol as a continuous phase and disperses magnetic iron oxide and microcrystalline clinoptilolite. According to the composite agent disclosed by the invention, trapping-enriching-mineralizing integrated fixation of PO4 < 3-> / F <-> is realized, the whole process does not depend on polymeric flocculants such as polyaluminum chloride, and the secondary salt load and the flocculation residue risk are remarkably reduced.

The invention relates to the technical field of metaphosphate preparation, in particular to a preparation method of monodisperse micron-sized magnesium metaphosphate, which comprises the following steps: (S1) adding basic magnesium carbonate into a reaction container, adding water to prepare slurry I, slowly adding phosphoric acid, heating to 30-40 DEG C, continuously and slowly adding phosphoric acid, heating to 50-60 DEG C, concentrating, dehydrating, washing and drying to obtain a solid; (S2) preparing slurry II from the solid and deionized water, adding ethanol and a particle size regulating agent, uniformly mixing, and performing centrifugal spray drying to obtain a crude product; the particle size regulating agent is prepared from magnesium stearate, polyol, polyvinyl alcohol and nanoscale magnesium metaphosphate; and (S3) calcining the crude product to obtain a monodisperse micron-sized magnesium metaphosphate product. According to the preparation method disclosed by the invention, a crude product with uniform particle size can be obtained by spray drying, adding ethanol and a particle size regulating agent and reasonably controlling a formula and spray drying parameters, and finally, the crude product is calcined to obtain the monodisperse micron-sized magnesium metaphosphate.

The invention discloses an oxidation pretreatment method based on ozone / superphosphate and application thereof.The method comprises the following steps that ozone and superphosphate are added into a drinking water source, the adding amount of the ozone is 2.0-5.0 mg / L, and the adding amount of the superphosphate is 5.0-10.0 mg / L; reacting for 5 to 10 minutes; and a final reaction product phosphate is removed through coagulation and precipitation processes. When the initial concentration of the smelly substances in the water is less than or equal to 100ng / L, the smelly substances can be reduced to be less than a smelly threshold value by applying the method, and water quality parameters such as total organic carbon, chromaticity and the like are not influenced. The ozone oxidation end product is oxygen, the phosphate end product is phosphate, the oxygen and the phosphate can be effectively removed through subsequent conventional water treatment processes (coagulation and precipitation), and the method has the advantages of being easy and convenient to operate, low in cost, environmentally friendly and the like and is suitable for pretreatment of various drinking water sources such as surface water and underground water.

Eutectic composites can be used in oil and gas services. For example, a method of making such a composite can include crosslinking a mixture including a polymer, a metaphosphate, and a plurality of eutectic alloy particles to produce a eutectic composite, and producing a plurality of eutectic composite particles from the eutectic composite. Further, an example composition can include a cement; water; and a plurality of eutectic composite particles including eutectic alloy particles dispersed in a polymer crosslinked with a metaphosphate.

The invention discloses a method for reducing the content of magnesium sulfate in sylvite flotation. The method comprises the following steps: crushing carnallite containing magnesium sulfate, adding water to decompose the carnallite, and adding a regulator and a surfactant to form mixed slurry; roughing, primary concentration, secondary concentration and scavenging are conducted on the mixed slurry, an anion collecting agent and a foaming agent are added in the roughing stage and the scavenging stage, and flotation concentrate obtained after secondary concentration is finished is a crude potassium product. According to the method, saturated fatty acid is adopted as an anion collecting agent, alkyl sulfonate is adopted as a surfactant, metaphosphate is adopted as a regulator, and dihydric alcohol is adopted as a foaming agent, so that the selectivity of the saturated fatty acid collecting agent to sylvite is improved, meanwhile, the adsorption effect on magnesium sulfate in the sylvite flotation process is inhibited, and the potassium yield is increased; the content of magnesium sulfate in the crude potassium product in the flotation stage is reduced, and the technological process is simple and easy to operate, compact in flow and easy to realize large-scale production.

This negative electrode material for a secondary battery is provided with silicon-containing particles and a coating layer that covers at least a part of the surface of the silicon-containing particles. The silicon-containing particles comprise an ion-conducting phase and a silicon phase dispersed within the ion-conducting phase. The coating layer contains at least one phosphate compound selected from the group consisting of phosphate compounds containing anions represented by general formula (1), polyphosphate compounds, and metaphosphate compounds. In general formula (1), A is an organic group or an oxygen atom. # imgabs0 #