55 results about "Phosphinic Acids" patented technology

The invention provides an aqueous zinc ion battery electrolyte, a preparation method thereof and a zinc ion battery, and belongs to the technical field of aqueous zinc ion batteries. The aqueous zinc ion battery electrolyte comprises an additive, an inorganic zinc salt and a solvent, the additive comprises at least one of trimethylamine substituted by 1-3 substituent groups, benzene and C3-C10 straight-chain alkane, and the substituent groups comprise phosphonic acid groups or phosphinic acid groups; the solvent comprises a sodium chloride aqueous solution. By adopting the additive with a specific structure and the solvent containing the sodium chloride aqueous solution, the cycle performance of the zinc negative electrode in the water-based zinc ion battery can be remarkably improved, and the service life of the water-based zinc ion battery is prolonged.

The invention relates to the technical field of high polymer materials, in particular to a polyethylene flame-retardant master batch and a production process thereof. The polyethylene flame-retardant master batch is prepared from the following raw materials in parts by weight: 50 to 60 parts of polyethylene, 10 to 20 parts of hydroxymethyl phosphinic acid, 15 to 20 parts of HDPE-g-MAH, 0.8 to 1.5 parts of an initiator, 1 to 2 parts of an antioxidant and 3 to 6 parts of functional particles. The polyethylene is selected from high-density polyethylene, and the melt index of the polyethylene is 7-20g / 10min under the conditions of 190 DEG C and 2.16 kg; the polyethylene flame-retardant master batch produced by the invention not only can effectively enhance the flame retardant property of a polyethylene product, but also can effectively improve the anti-aging property of the polyethylene product; and the service life of the polyethylene product is prolonged to a certain extent while the quality of the polyethylene product is ensured.

The invention belongs to the technical field of synthesis of extraction agents, and particularly relates to a preparation method and application of amido diphosphinic acid. The preparation method comprises the following steps: (1) mixing a solvent, primary amine, cyclohexylphosphinic acid and inorganic acid, and heating until the solution is clear and transparent; (2) adding a formaldehyde solution or paraformaldehyde into the clear and transparent solution for reaction; and (3) removing a water phase from the mixture obtained after the reaction in the step (2) is finished, dissolving jelly obtained after the water phase is removed by using dichloromethane, and carrying out washing, rotary evaporation and drying to obtain the amido diphosphinic acid.

The application discloses a kind of superdispersion flame-retardant engineering plastic master batch and preparation method thereof, it is related to functional plastic technical field, including functional master batch, the functional master batch includes the following components by weight parts: nylon 6 sheet 100 parts, modified carbon nanotube 0.5-8 parts, diethyl phosphinic acid ethyl aluminum 5-15 parts, flame retardant 5-15 parts, carbon forming agent 2-5 parts, epoxy silicon dioxide 0.5-5 parts, compatible agent 0.5-5 parts.The application introduces diethyl phosphinic acid ethyl aluminum and flame retardant, forms carbon layer on the material surface when plastic master batch burns, and the interaction between the molecular chains of plastic master batch is improved by Schiff base structure, realizes the double performance improvement of plastic master batch flame retardant and anti-dripping, solves the problem of fire spread caused by melt dripping.

The invention relates to a method for continuously preparing alkyl diaryl phosphonate, which comprises the following steps of: a, reacting trialkyl phosphite and triaryl phosphite in a high-temperature section filled with a solid catalyst to obtain a reaction product; and b, removing low-fraction byproducts in the reaction product in the step a through reduced pressure distillation or fractionation at the outlet of the high-temperature section, feeding the residual product into a cooling section, collecting a crude product of the alkyl diaryl phosphonate at the outlet of the cooling section, and carrying out post-treatment to obtain the alkyl diaryl phosphonate. A continuous catalytic reaction is carried out through the solid catalyst filled in the tubular reactor, and an intermittent reaction is changed into a continuous reaction, so that the liquid holdup is greatly reduced, and the safety coefficient of production is improved; a traditional halogenated alkane catalyst is not used, so that the risk that the temperature rise is out of control is effectively reduced; according to the method, the reaction time is shortened while the reaction yield is not reduced, and the production efficiency is improved.

The invention relates to the technical field of aluminiferous rock series ore processing, in particular to a method for sorting and extracting titanium concentrate from aluminiferous rock series ore. The method comprises the steps that the aluminiferous rock series ore is subjected to crushing and first grinding in sequence, and first ore pulp is obtained; the first ore pulp is subjected to desiliconization direct flotation through a first acid-base regulator and a first collecting agent, and desiliconized rough concentrate pulp is obtained; the first collecting agent comprises at least one of sodium oleate, sodium benzohydroxamic acid and sodium salicylhydroxamic acid; the desilicication rough concentrate pulp is subjected to secondary grinding, and second ore pulp is obtained; performing micro-bubble flotation on the second ore pulp by using a second pH regulator, an inhibitor, an activating agent, a second collecting agent and a foaming agent to obtain titanium concentrate; and the second collecting agent comprises (2-hydroxy-2-methyl propyl) (phenyl) phosphinic acid, diphenyl phosphinic acid and diisooctyl phosphinic acid. According to the method, the yield of the titanium concentrate is increased through the synergistic effect of stage grinding separation, precise reagent matching and micro-bubble enhanced separation.

The application provides a flame retardant composition and application thereof and a polyamide composite material, the flame retardant composition comprises 5-15 parts of a dialkyl phosphinic acid metal salt and 0.5-4 parts of an imidazolium dialkyl phosphinate salt in terms of weight parts. The flame retardant composition, by compounding the imidazolium dialkyl phosphinate salt with the dialkyl phosphinic acid metal salt, can effectively improve the flame retardant efficiency, mechanical properties and precipitation resistance of the material, and meanwhile can reduce the content of the dialkyl phosphinic acid metal salt in the resin system.

The present application relates to the technical field of fuel additive, in particular to a high-energy cleaning type composite solid fuel additive and a preparation method thereof. The additive comprises the following raw materials: myristic acid, stearic acid, a composite catalytic unit, modified soybean lecithin, tributyl borate, butylated hydroxyanisole and polyethylene glycol monostearate. The composite catalytic unit is prepared by coordination of diethyl phosphinic acid with manganese chloride, lanthanum chloride and cerium chloride; the modified soybean lecithin is obtained by ammonolysis and intramolecular lactonization and contains a five-membered cyclic phosphonate structure. During preparation, the components are dispersed by ultrasonic dispersion after being loaded on a melting carrier, and then solidified and formed. The additive realizes cleaning and repair integration through double-metal synergistic catalysis and combustion strengthening, and the composite carrier can controllably release and adapt to all working conditions. The product is soft and easy to discharge, has high economic efficiency and environmental compatibility, and is convenient to store and use.

The invention relates to a waterproof anticorrosive paint and a preparation method thereof, and belongs to the technical field of paints.The paint comprises a component A and a component B, the component A comprises organic titanium-silicon-POSS (Polyhedral Oligomeric Silsesquioxane) hybrid resin, intercalation modified hydrotalcite-boron nitride composite barrier filler and the like; and the component B comprises a nitrogen-phosphorus modified amine composite curing agent, an interface metal anchoring accelerator and the like. The organic titanium-silicon-POSS hybrid resin is prepared by carrying out a reaction on tetraisopropyl titanate, 2, 3-dihydroxy naphthalene, methyltrimethoxysilane, KH-792 and octa-amino POSS (Polyhedral Oligomeric Silsesquioxane). The intercalation modified hydrotalcite-boron nitride composite barrier filler is prepared by stirring magnesium-aluminum hydrotalcite powder, phytic acid and KH-550 modified boron nitride nanosheets. The nitrogen-phosphorus modified amine composite curing agent is prepared from tris (2-aminoethyl) amine, hydroxymethyl phenyl phosphinic acid, p-toluenesulfonic acid and a T-31 epoxy resin curing agent. The interface metal anchoring accelerant is prepared from triethylamine, absolute ethyl alcohol and 2-aminoethyl phosphonic acid.

A composition for encapsulation, which contains a photopolymerizable compound and a photopolymerization initiator, and wherein the photopolymerization initiator comprises one or two selected from the group consisting of ethyl (2, 4, 6-trimethylbenzoyl) phenylphosphonate and phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide.

The invention discloses a low-precipitation high-glowing filament halogen-free flame-retardant reinforced polyamide composition and a preparation method thereof. The low-precipitation high-glowing filament halogen-free flame-retardant reinforced polyamide composition comprises the following components in parts by weight: 45-55 parts of polyamide, 15-20 parts of an organic phosphinate flame retardant, 3-5 parts of a flame-retardant synergist, 5-10 parts of a glowing filament synergist, 10-30 parts of glass fibers, 0.1-0.5 part of an antioxidant and 0.2-0.5 part of a lubricant. Wherein the glowing filament synergist is a mixture of metal hydroxide and layered silicate. According to the invention, the glowing filament performance GWIT of a material in a halogen-free phosphinate flame-retardant system can be obviously improved, and meanwhile, the halogen-free phosphinate flame-retardant polyamide composition has excellent flame retardance and mechanical properties, low precipitation and low corrosion, so that the obtained polyamide composition is widely applied to the electronic and electrical industry.

The application discloses a kind of flame-retardant nylon compositions and its preparation method and application, belong to engineering plastics field.The flame-retardant nylon composition described in the application includes the following weight parts of components: PA66 resin 10-35 parts, semi-aromatic polyamide resin 5-15 parts, organic phosphinic acid salt flame retardant and synergist 14-26 parts, glass fiber 18-52 parts, in-situ coating agent 0.8-5.3 parts;The in-situ coating agent is ethylene-alkyl acrylate-maleic anhydride copolymer;The semi-aromatic polyamide resin is selected from at least one of PA6I / 6T, MXD6.The flame-retardant nylon composition prepared by the interaction between components has excellent flame-retardant performance, is resistant to boiling, has good appearance, and is especially suitable for bright color product connectors.

A method provides for separating nickel from an aqueous solution using an organic—aqueous extraction by performing one or more liquid-liquid extraction stages performed using an input aqueous solution comprising lithium ions, nickel ions, and cobalt ions and / or manganese ions, wherein each extraction stage comprises mixing an aqueous phase with dissolved metal sulfate with an organic solvent having dissolved di-(2,4,4-trimethylpentyl) phosphinic acid from 30% to 70% hydroxyl saponified with alkali, NH4+ or nickel counter ions. A collected purified aqueous phase comprising at least 90% of the nickel from the input aqueous solution and no more than about 5% of the each of the cobalt and manganese. The input aqueous solution is prepared from recovered lithium ion battery material.

A thermoplastic composition including: a polyester including a poly(alkylene arylate); optionally, a polyetherimide; a flame retardant composition comprising a dialkyl phosphinic acid salt, and optionally; optionally an auxiliary flame retardant comprising melamine polyphosphate, melamine cyanurate, melamine pyrophosphate, melamine phosphate, or a combination thereof; a mineral flame retardant synergist comprising a modified fibrillated magnesium silicate, a modified fibrillated aluminum silicate, or a combination thereof; optionally, glass fibers; and optionally, an additive composition; wherein the sum of the wt% of the polyester, the flame retardant composition, the mineral flame retardant synergist, the optional polyetherimide, the optional glass fibers, and the optional additive composition total 100 wt%, and wherein the thermoplastic composition comprises 1500 ppm or less of intentionally added fluorine, and a sample of the thermoplastic composition exhibits a UL 94 flame test rating of V-0 at a thickness of 1.5 mm.

The invention relates to the technical field of coatings and provides a polymer cement breathable waterproof coating for an outer wall and a preparation method of the polymer cement breathable waterproof coating. A polymer cement breathable waterproof coating for exterior walls is composed of feed liquid and powder, and the feed liquid is prepared from, by weight, 90-95 parts of water-based high-molecular polymer emulsion and 5-10 parts of water; the powder material is prepared from the following raw material components in parts by weight: 45 to 50 parts of cement, 45 to 60 parts of filler and 0.1 to 0.5 part of carbon inhibitor; the carbon inhibitor comprises one or two of a polystyrene-phosphorous acid mixture, tripolyphosphate and pyrophosphate. According to the technical scheme, the problem of poor air permeability of the waterproof coating in the prior art is solved.

The application discloses an ABS composition, a preparation method thereof and a molded part, and belongs to the technical field of polymer materials. The application adds stearate, dihydrocarbyl-substituted phosphinic acid salt, monohydrocarbyl-substituted phosphinic acid salt and a bromine-based flame retardant into ABS resin, and controls the respective dosages of the components in a specific range, so that the obtained composition has good flame retardance and moisture resistance, is suitable for application scenarios with high index requirements for flame retardance and moisture resistance, and can be particularly used for the production and preparation of electronic and electrical products and matched structural parts used in a bathroom environment.

A flame-retardant polyurethane obtained by reacting a polyol and an isocyanate in the presence of a flame retardant comprising a phosphinic acid ester of formula (I): wherein R1 is a hydrocarbyl group selected from C1-C12 alkyl groups and C6-C20 aryl groups; and wherein R2 and R3, identical or different, independently represent H or a C1-C12 alkyl group.

The application discloses a kind of bio-based fibers and preparation method thereof, it is related to textile fiber technical field.The application is prepared when bio-based fiber, 1, 4-di (2', 3'-epoxy propyl) perfluorobutane is reacted with diethyl phosphinic acid to obtain flame-retardant dihydric alcohol;Terephthalic acid is dehydrated and condensed with bio-based 1, 3-propanediol, flame-retardant dihydric alcohol, and then reacted with hydroxyl-terminated dimethyl methyl vinyl (silicone and polysiloxane) to obtain modified bio-based polyester;Biomass graphene is reacted with 3-(methacryloyloxy) propyl trimethoxysilane to obtain modified biomass graphene;Modified bio-based polyester and modified biomass graphene are melt-mixed, extruded and granulated to obtain modified bio-based polyester / modified biomass graphene blend chip, and then melt-spun with dicumyl peroxide, false twist texturing to obtain bio-based fiber.The bio-based fiber prepared by the application has good warmth retention, flame retardant, hydrophobic and mechanical properties.

The application belongs to the technical field of composite materials, and particularly relates to an environment-friendly flame-retardant composite material for pipes and a preparation method thereof. The composite material comprises the following components in parts by weight: 80-100 parts of aliphatic polyamide, 10-15 parts of toughening agent, 20-30 parts of inorganic fiber filler, 8-14 parts of alkyl phosphinic acid salt, 6-10 parts of attapulgite, 2-4 parts of brominated polystyrene, 1-3 parts of coupling agent, 1-3 parts of lubricant, and 1-3 parts of antioxidant. The aliphatic polyamide is used as a base resin, and the alkyl phosphinic acid salt, the attapulgite and the brominated polystyrene are ternary compounded, so that multiple targets of improving flame-retardant efficiency, maintaining mechanical properties and improving processing stability are achieved. Technical defects such as large single flame-retardant additive amount, limited flame-retardant effect and easy precipitation of the alkyl phosphinic acid salt are effectively overcome, so that the composite material achieves a more optimal comprehensive balance in flame retardancy, mechanical strength and use reliability.

The invention relates to the technical field of fuel additives, in particular to a high-energy clean type composite solid fuel additive and a preparation method thereof. The additive comprises the following raw materials: myristic acid, stearic acid, a composite catalytic unit, modified soybean lecithin, tributyl borate, butyl hydroxy anisd and polyethylene glycol monostearate. The composite catalytic unit is prepared from diethyl phosphinic acid, manganese chloride, lanthanum chloride and cerium chloride through coordination; the modified soybean lecithin is obtained through ammonolysis and molecular lactonization and contains a five-membered cyclic phosphonate structure. The preparation method comprises the following steps: melting the carrier, ultrasonically dispersing the components, curing and molding. Combustion is enhanced through synergistic catalysis of double metals, cleaning and repairing integration is achieved through modified lecithin, the composite carrier is controlled to release and adapts to all working conditions, the product is soft and easy to discharge, high economical efficiency and environmental compatibility are achieved, and storage and use are convenient and fast.

The invention develops a method for reducing heteroaryl ketone under a photocatalytic condition by taking deuterium water / water as a deuterium / hydrogen source. According to the method, metal photocatalysts or organic photocatalysts (EY or DPZ type) of Ir, Ru and Rh complexes are used, diphenyl phosphinic acid is used as a cocatalyst, triaryl phosphine is used as a reducing agent, and efficient reduction under mild conditions is achieved in solvents such as ethylene glycol dimethyl ether. The reaction has good functional group compatibility, can be suitable for various substituted heteroaryl ketone substrates, and provides a new way with high atom economy and simple operation for synthesis of deuterium-containing labeled alcohol compounds.

The present disclosure provides a method for measuring a concentration of a per- and polyfluoroalkyl substance and a liquid chromatography-tandem mass spectrometry system. The method includes: measuring concentrations of a plurality of per-and polyfluoroalkyl substances in a sample by liquid chromatography-tandem mass spectrometry in a primary measurement process of eluting the sample with an alkaline mobile phase, in which the plurality of per- and polyfluoroalkyl substances at least include one or more perfluoroalkyl phosphonic acids / phosphinic acids or polyfluoroalkyl phosphate esters. According to the method, by using the alkaline mobile phase to elute the sample, the rapid analysis on 93 PFASs including perfluoroalkyl phosphonic acids / phosphinic acids and polyfluoroalkyl phosphate esters can be completed by single injection. Additionally, the present disclosure also provides a method to rapidly analyze 10 PFASs by GC-MS / MS.

The application relates to the cable technical field and discloses a flame-retardant cable and a preparation method thereof. The flame-retardant cable comprises, from inside to outside, a conductor, an insulation layer and a sheath layer. The raw material of the sheath layer comprises the following components in parts by weight: 100 parts of polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 5-8 parts of ethylene-ethyl acrylate copolymer, 9-15 parts of a filler, 35-45 parts of inorganic hydroxide and 6-12 parts of a carboxyl-containing compound. The carboxyl-containing compound comprises tri(2-carboxyethyl) isocyanurate and 2-carboxyethyl phenyl phosphinic acid in a weight ratio of 1:9-9:1. The carboxyl-containing compound of tri(2-carboxyethyl) isocyanurate and 2-carboxyethyl phenyl phosphinic acid and the inorganic hydroxide are used together in the cable sheath layer, so that the problem that the flame retardance is limited due to poor dispersibility of the inorganic hydroxide in the existing cable sheath layer in the related art is solved.

The invention discloses an antistatic silk fabric and a preparation method thereof, and relates to the field of fabrics. When the antistatic silk fabric is prepared, (4-bromophenyl) phosphinic acid and 3-thiopheneboronic acid react to obtain a graft; reacting mulberry silk with the graft to obtain modified mulberry silk; the preparation method comprises the following steps: reacting trihydroxymethyl aminomethane, 3, 6-dichloro-4-pyrazinecarboxaldehyde and butanediamine to obtain a modified monomer; reacting m-phenylenediamine, isophthaloyl dichloride and the modified monomer, and performing wet spinning to obtain modified aramid fiber filaments; the modified aramid fiber filament is used as core yarn, the modified mulberry silk is used as Z-twist and S-twist yarn to prepare core-spun yarn, and the core-spun yarn is sequentially finished by boric acid and thiophene to be woven into the anti-static silk fabric. The antistatic silk fabric prepared by the invention has excellent antistatic, flame-retardant and mechanical properties.

The application belongs to the technical field of rare earth recovery, and particularly relates to a modified chitosan adsorbent for recovering scandium and a preparation method thereof, which comprises the following steps: (1) preparing a chitosan-acetic acid mixed solution, dropping the mixed solution into a NaOH solution, filtering off the alkali solution after soaking and solidifying, and cleaning the solid with deionized water until the filtrate is neutral to obtain a spherical gel; (2) adding a pre-crosslinking agent to the spherical gel, oscillating or stirring, filtering off the liquid, and washing the solid multiple times to obtain pre-crosslinked chitosan; (3) adding deionized water to the pre-crosslinked chitosan, mixing uniformly, then dropping in a crosslinking agent, oscillating until sufficient crosslinking is achieved, filtering off the liquid, and washing the solid to obtain the solid; (4) adding an ethanol solution and an amination reagent to the solid, oscillating or stirring, filtering off the liquid, and washing the solid to obtain polyaminated chitosan; and (5) uniformly mixing a solvent, the polyaminated chitosan, a phosphinic acid and an inorganic acid, heating, adding a formaldehyde solution, constant-temperature reaction, extraction, and removing the solvent to obtain the modified chitosan adsorbent.

The application discloses a water-resistant PC / PET filling material and a preparation method thereof. The material comprises the following raw materials in parts by weight: PC, PET, modified montmorillonite and a processing aid, wherein the modified montmorillonite is phenyl phosphinic acid modified glycidyl ether modified montmorillonite. The material solves the problems of degradation and mechanical property reduction caused by the introduction of the filler into the system, and can simultaneously solve the problem of poor water resistance.

The application discloses an ABS composition, a preparation method thereof and a part, and belongs to the technical field of polymer materials. The application adds dihydrocarbyl-substituted phosphinic acid salt, mono-hydrocarbyl-substituted phosphinic acid salt and specific brominated epoxy resin into ABS resin, and controls the respective dosages of the components in a specific range, so that the obtained composition has good flame retardance and low mold fouling, and is suitable for preparing an electrified peripheral part of a household appliance or an electronic and electrical product.

The application belongs to the technical field of resource utilization of waste lithium ion batteries, and discloses a method for recovering valuable metals from waste ternary lithium batteries based on a eutectic solvent. The method uses a eutectic solvent system of betaine hydrochloride-malic acid-water to simultaneously achieve the preliminary separation of lithium and manganese into the liquid phase and the precipitation of nickel and cobalt in the leaching stage. For the products after the preliminary separation, an extraction-back extraction process is used for purification: after the dissolution of the solid phase containing nickel and cobalt, the nickel and cobalt are co-extracted into the organic phase by using a thio-phosphinic acid extractant, and then by controlling the acidity gradient of the back extraction agent, cobalt salt products and nickel salt products are obtained by back extraction in steps; the lithium-rich manganese liquid phase is selectively extracted by using an acidic phosphorus extractant to separate lithium from manganese. The application combines leaching and precipitation integration with selective extraction technology, shortens the process flow, realizes the full-component high-purity recovery of valuable metals, and realizes the closed-loop utilization of leaching agents.

The invention relates to the technical field of mineral processing, and discloses a preparation process of a composite collecting agent for low-temperature spodumene flotation, and the composite collecting agent comprises the following components by weight: 20-30% of oxidized paraffin soap; 3%-8% of dialkyl phosphinic acid; 8%-12% of fatty acid methyl ester ethoxylate; 5%-10% of kerosene; 15%-20% of propylene glycol; 1% to 3% of 1-butyl-3-methylimidazolium hexafluorophosphate; 0.1% to 0.5% of potassium sorbate; 3%-5% of methyl isobutyl carbinol; the preparation method comprises the following steps: carrying out dehydration and pre-activation pretreatment on the oxidized paraffin soap, the dialkyl phosphinic acid and the triethanolamine, carrying out a three-stage mixing process of a mixing stage A, a mixing stage B and a mixing stage C on the oxidized paraffin soap, the dialkyl phosphinic acid and the triethanolamine, and finally carrying out nitrogen protection packaging to obtain a finished product when the pH value, the viscosity, the low-temperature stability and the effective activity content are detected to be qualified. The composite collecting agent is specially used for flotation of spodumene at the low temperature of 5-15 DEG C, can efficiently and selectively collect spodumene minerals, and has the advantages of being good in dissolution dispersity at the low temperature, high in adsorption selectivity, capable of saving energy, efficient and high in universality.

The application discloses a PA composition, a preparation method thereof and a molded part, and belongs to the technical field of polymer materials. The PA resin is added with specific amounts of a dihydrocarbyl-substituted phosphinic acid salt, a monohydrocarbyl-substituted phosphinic acid salt, a bromine-based flame retardant and a specific lubricant, so that the material has good flame retardance and a low surface friction coefficient, and is suitable for application in the fields of automobiles, electronic and electrical appliances and mechanical industry.