46 results about "Phosphinidene" patented technology

The invention relates to the field of additives, in particular to a polymer additive and application thereof, which are used for solving the problem that the existing dialkyl phosphinate is insufficient in flame retardant efficiency and contradictory in mechanical property in practical application. Diethyl phosphinate, dialkyl phosphinate, alkyl phosphinate, alkyl phosphinate and phosphite are reasonably compounded to prepare the polymer additive, so that the polymer additive has excellent and efficient flame retardance and also can be endowed with excellent compatibility, the polymer additive is used in a polymer material, and the flame retardance of the polymer material is improved. According to the present invention, with the flame retardant, the polymer material containing the flame retardant can have advantages of excellent flame retardant property, good toughness, high impact strength and excellent mechanical property under the condition of the small addition amount.

The application provides a polyamide composition and application thereof, the polyamide composition comprises the following components in parts by mass: polyamide 40-99.5 parts, reinforcing material 10-45 parts, and flame retardant 5-35 parts; the flame retardant comprises the following components in parts by mass: diethyl phosphinate 30-90 parts, ethyl phosphinate 0.01-3 parts, dihydrocarbyl phosphite 5-67 parts, and hydrocarbyl phosphite 0.01-5.5 parts. The application can play the effect of efficient flame retardation by introducing specific flame retardants, so that the polyamide composition has excellent flame retardation and excellent impact resistance.

The invention provides a method for preparing sodium diisobutyl dithiophosphinate by using a microreactor, and belongs to the technical field of organic synthesis. The method comprises the following steps: sequentially carrying out impurity removal pretreatment, precooling drying and deep cooling on phosphine gas to obtain high-purity liquid phosphine, the method comprises the following steps: by taking liquid phosphine and isobutene as raw materials, adding an initiator, and carrying out photo-thermal synergistic initiated free radical addition reaction in a microreactor to synthesize diisobutyl phosphorus; the micro-reactor comprises a straight-through pre-activation zone, a transition reaction zone and a main reaction zone; rectifying and separating the diisobutyl phosphorus; the preparation method comprises the following steps: adding diisobutyl phosphorus and a sodium hydroxide solution into a sulfur source solution under the conditions of pressurization and heating, carrying out nucleophilic substitution reaction, and carrying out heat preservation reaction to obtain the sodium diisobutyl dithiophosphinate. The free radical addition reaction is carried out in the microreactor, and step-by-step operation initiated by photo-thermal synergy is adopted, so that the yield of the target product diisobutyl phosphorus of the reaction is effectively improved, the generation of by-products is inhibited, and the blockage of the microreactor is avoided.

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 invention relates to a blue boiling-resistant flame-retardant nylon composite material and a preparation method thereof.The nylon composite material is prepared from, by weight, 61-72 parts of nylon resin, 20-25 parts of flame retardant, 5-10 parts of filling mineral, 0.3 part of laser etching powder, 0.3-0.8 part of blue toner, 1-2 parts of dispersing agent and 1 part of processing aid; the flame retardant is a phosphinate halogen-free flame retardant; the filling mineral is kaolin with a lamellar structure; the dispersing agent is a mixture of zinc stearate and N, N-ethylene bis stearamide; the preparation method comprises the following steps: uniformly mixing the components according to the weight ratio, and adding the mixture into a double-screw extruder for extrusion molding to obtain the blue boiling-resistant flame-retardant nylon composite material. The preparation method is simple in process; the prepared nylon composite material has the color difference E of less than 1 before and after water boiling, the flame retardant grade of 1.6 mm V0 and excellent laser marking performance.

Provided is an alkyl phosphinate composition, comprising: 99.5-99.9999 wt% of an alkyl phosphinate; and 0.0001-0.5 wt% of a long-chain phosphate. The particle size D95 of the alkyl phosphinate composition is less than 20 microns; the number of carbon atoms in the long-chain phosphate is 16-24. The composition of alkyl phosphinate powder can avoid agglomeration of ultra-fine powder flame retardant during use and improve the dispersion effect of ultra-fine alkyl phosphinate powder in epoxy resins and polyurethane, thereby avoiding granular white spots when used in materials such as printed circuit boards and films; moreover, the composition can meet processing and use requirements for alkyl phosphinate flame retardants, and does not reduce the flame retardant efficiency of alkyl phosphinate flame retardants. Also provided are a preparation method for and a use of the alkyl phosphinate composition.

Flame-retardant polyamide moulding composition, in particular for railway applications, comprising, preferably consisting of: A 34 to 88% by weight of a semi-crystalline aliphatic polyamide having a C / N ratio of at least 8; b 6 to 21% by weight of a flame retardant consisting of: B1 50 to 100% by weight of at least one metal phosphinate; b2 0 to 50 wt% of at least one flame retardant synergist and / or at least one flame retardant containing nitrogen and phosphorus; wherein the sum of components B1 and B2 constitutes 100% by weight of component B; c 1 to 10 wt% of graphite; d 0 to 25 wt% of a polyamide elastomer; e 0 to 10 wt% of a plasticizer; f 0 to 10% by weight of a polyolefin; g 0 to 5% by weight of an additive different from A to F; wherein the sum of the weight proportions of components D to F is 5 to 30 wt% with respect to the sum of the weight percentages of components A to G, and wherein the sum of the weight proportions of components A to G is 100 wt%.

This invention discloses a high-fluorescence quantum yield all-inorganic perovskite thin film, its preparation method, and its applications, belonging to the field of lead-free perovskite optoelectronic device technology. The thin film preparation method includes the following steps: dissolving tin dibromide and cesium bromide in an organic solvent to obtain a precursor solution; adding N-(diphenylphosphino)-P,P-diphenylphosphineamide; coating the obtained perovskite precursor solution onto a substrate; and then annealing to obtain a high-fluorescence quantum yield all-inorganic perovskite thin film, which is a CsSnBr3 perovskite thin film. The CsSnBr3 perovskite thin film prepared using the method of this invention exhibits a high fluorescence quantum yield and improved film coverage. The high-fluorescence quantum yield CsSnBr3 perovskite thin film prepared by this invention can be applied to perovskite light-emitting devices, perovskite solar cells, perovskite photodetectors, and other fields.

The application discloses a flame retardant composition, a resin composite material and application and a molded part thereof, and belongs to the technical field of flame retardants. The application combines dihydrocarbyl-substituted phosphinate, mono-hydrocarbyl-substituted phosphinate and mono-hydrocarbyl-substituted phosphonate according to specific amounts, controls the dihydrocarbyl-substituted phosphinate to contain a specific amount of dihydrocarbyl-substituted phosphinate with a tertiary carbon structure, so that the prepared flame retardant composition can improve the flame retardant performance of a material and reduce mold fouling in a processing process when being applied to a resin, and is suitable for preparing electronic and electrical products.

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 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.

This application discloses a thermoplastic resin composition, its preparation method, and the resulting product, belonging to the field of polymer materials technology. This application simultaneously adds specific amounts of brominated polystyrene, dialkyl-substituted phosphinates, and monoalkyl-substituted phosphinates of specific weight-average molecular weights to a matrix resin including at least one of ABS, SAN, and HIPS. By utilizing their synergistic effect, the resulting thermoplastic resin composition exhibits good flame retardancy, strong resistance to heat distortion, and is less prone to tiger-skin patterns during injection molding, making it suitable for manufacturing electronic and electrical products.

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 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 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 invention provides halogen-free flame-retardant polyurethane resin as well as a preparation method and application thereof, and the halogen-free flame-retardant polyurethane resin is prepared from the following raw materials in percentage by weight: 60-85% of a polyurethane matrix material system; 10 to 35% of phenyl phosphine oxide; 3-10% of a flame retardant synergist; wherein the phenyl phosphine oxide is selected from at least one of triphenyl phosphine oxide or p-xylyl bis (diphenyl) phosphinic oxide; the flame retardant synergist is selected from salts formed by nitrilotrimethylene triphosphonic acid and metal ions; the polyurethane leather prepared from the halogen-free flame-retardant anti-polyurethane resin disclosed by the invention is good in flame retardant property, good in hydrolysis resistance and good in mechanical property.

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.

A radiation curable ink jet composition includes polymerizable compounds and a photopolymerization initiator, the polymerizable compounds include a monofunctional monomer, a content of the monofunctional monomer with respect to a total mass of the polymerizable compounds is 90 percent by mass or more, and the photopolymerization initiator includes ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate.

The invention provides a fluorine-free halogen-free flame-retardant polypropylene composition as well as a preparation method and application thereof. The fluorine-free halogen-free polypropylene composition comprises the following components in parts by weight: 55-70 parts of polypropylene resin; 24 to 30 parts of a compound flame retardant; 9 to 15 parts of SBS resin; 0.2-2 parts of an active auxiliary agent; wherein the melt flow rate of the SBS resin is greater than or equal to 4g / 10min at 190 DEG C under the load of 5kg; the compound flame retardant comprises a piperazine flame retardant, a melamine salt flame retardant and a phosphinic / phosphate flame retardant. The polypropylene composition prepared by adding the SBS resin with a specific melt flow rate and the active auxiliary agent into a polypropylene resin system and combining with the compound flame retardant is good in flame retardant property and better in mechanical property.

The application discloses a flame retardant composition, a resin composite material and application and a molded part thereof, and belongs to the technical field of flame retardants. The application is prepared by compounding dihydrocarbyl-substituted phosphinate, mono-hydrocarbyl-substituted phosphinate and mono-hydrocarbyl-substituted phosphonate in specific amounts, so that the prepared flame retardant composition can improve the flame retardant performance and heat-resistant oxygen aging ability of the material when applied to resin, and is suitable for preparing electronic and electrical products.

This application discloses an ABS composite material, its preparation method, and molded parts, belonging to the field of polymer materials technology. This application achieves good flame retardancy by adding specific toughening agents, dialkyl-substituted phosphinates, monoalkyl-substituted phosphinates, and brominated flame retardants to ABS resin, and controlling the dosage of each component within a specific range. Simultaneously, the resulting composite material exhibits good flame retardancy, and the finished parts have a good appearance after painting, making it suitable for exterior parts of home appliances, two-wheeled electric vehicles, and other products.

The application discloses a kind of dialkyl hypophosphite-alkyl phosphinic acid composite salt flame retardant and synthesis method thereof, it is related to organic phosphorus compound technical field, scheme is: the composite salt flame retardant is composed of dialkyl hypophosphite, alkyl phosphinic acid root and 2-4 valence metal ions;Its synthesis method includes that phosphine is added with gaseous or liquid olefin to occur radical addition, and the obtained addition product is oxidized, pH is adjusted and is salted with 2-4 valence metal salt, obtains target composite salt flame retardant.The beneficial effect of the application is: by controlling reaction ratio and subsequent conversion process, realizes the structure directional control from single salt to composite salt, so that the obtained product simultaneously has dialkyl hypophosphite and alkyl phosphinic acid root coexistence characteristics, while maintaining high conversion level, has stable preparation and good flame retardant application value.

The application discloses a flame retardant composition, a polypropylene composite material and a molded part thereof, and belongs to the technical field of flame retardants. The monohydrocarbyl-substituted phosphinate salt and the bromine-based flame retardant are compounded according to specific dosages, so that when the obtained flame retardant composition is applied to a resin, excellent flame retardant performance can be ensured, and the generation of black spots can be effectively reduced, and the flame retardant composition is suitable for products in the fields of household appliances, electronic appliances and the like.

The invention relates to the technical field of aluminiferous rock series ore processing, in particular to a method for extracting titanium from aluminiferous rock series ore. The method comprises the steps that the aluminiferous rock series minerals are sequentially crushed and subjected to first grinding, and first ore pulp is obtained; grading the first ore pulp to obtain coarse particle ore pulp and fine particle ore pulp; performing secondary grinding on the coarse particle ore pulp to obtain second ore pulp; mixing the second ore pulp with the fine particle ore pulp to obtain third ore pulp; the third ore pulp is subjected to gravity separation, and gravity separation ore pulp is obtained; concentrating the heavily separated ore pulp to obtain concentrated heavily separated ore pulp; using an acid-base regulator, an inhibitor, an activating agent, a collecting agent and a foaming agent to carry out microbubble flotation on the concentrated heavy-weight ore pulp to obtain titanium concentrate; wherein the collecting agent comprises (2-hydroxy-2-methyl propyl) (phenyl) phosphinic acid, diphenyl phosphinic acid and diisooctyl phosphinic acid. According to the method, through the synergistic effect of multi-section grinding, reselection pre-enrichment, microbubble flotation and efficient agents, the titanium recovery rate and grade are both improved.

The invention relates to a preparation method and application of a polyhydroxy phosphine-nitrogen flame retardant, the polyhydroxy phosphine-nitrogen flame retardant is prepared by recycling nitrogen-containing polyol in a thermosetting ester epoxy / amine cured product degradation product and further reacting, and the preparation method comprises the following steps: (1) carrying out alcoholysis on a thermosetting ester epoxy / amine cured product by using ethylene glycol and sodium hydroxide to obtain degradation liquid; (2) filtering the degradation liquid, carrying out rotary evaporation to remove ethylene glycol, aging with ethanol to remove salt, adjusting the pH value to be neutral, and carrying out rotary evaporation to obtain nitrogen-containing polyol EP / N-8OH; and (3) mixing the EP / N-8OH with triethylamine and tetrahydrofuran, dropwise adding diphenyl phosphinyl chloride under the protection of nitrogen, and performing treatment after reaction to obtain P, P-diphenyl phosphinic acid-3-[(5-{[bis (2, 3-dihydroxypropyl) amino] methyl}-3, 3, 5-trimethyl cyclohexyl) (2, 3-dihydroxypropyl) amino]-2-hydroxypropyl ester (polyhydroxy phosphine nitrogen flame retardant, DPP-P). The application method comprises the following steps: mixing DPP-P with bisphenol A epoxy resin E-51, a curing agent 1, 2, 3, 6-tetrahydrophthalic anhydride and a catalyst N, N-dimethylamine, and carrying out preheating, defoaming and stepped heating curing, so that the prepared flame-retardant modified epoxy resin E51-DPP-P has good flame retardance and mechanical properties.

Provided is a valuable metal recovery method. In the recovery method, cobalt, nickel, manganese, and lithium are recovered from a spent lithium ion battery at a very high recovery rate using a wet process. The valuable metal recovery method includes a first solvent extraction step in which an organic solvent is added to a solution containing at least one valuable metal selected from the group consisting of transition metals other than manganese, cobalt, and nickel, magnesium, strontium, and aluminum, and lithium, and the valuable metal is extracted, the organic solvent containing at least one selected from the group consisting of a compound represented by formula 1, a phosphonate, a phosphoric acid ester, a phosphinic acid, methyl isobutyl ketone, and trioctylamine, in formula 1, R1, R2 each independently represents a hydrocarbon group having 6 to 20 carbon atoms.

Flame retardant compositions for enhanced color change stability of polyamides and flame retardant polymer compositions comprising the same. A flame retardant composition is provided that provides color change stability to a polyamide material wherein the flame retardant composition comprises a dialkylphosphinate and a fatty acid ester formed from the esterification of a monoglycerol with at least two C12-C32 saturated or unsaturated fatty acids. The invention also provides a flame retardant polymer composition comprising the flame retardant composition and one or more thermoplastic polyamides.

The invention relates to the technical field of aluminiferous rock series ore processing, in particular to a method for separating and extracting titanium concentrate from aluminiferous rock series ore. The aluminiferous rock series ores comprise titanium minerals, aluminum minerals and silicon minerals, and the method comprises the steps that the aluminiferous rock series ores are sequentially subjected to crushing and first grinding, and first ore pulp is obtained; grading the first ore pulp to obtain fine particle ore pulp and coarse particle ore pulp; the coarse particle ore pulp is subjected to second grinding, and second ore pulp is obtained; mixing the fine particle ore pulp with the second ore pulp to obtain third ore pulp; the third ore pulp is subjected to desiliconization reverse flotation through an acid-base regulator and a first collecting agent, part of silicon minerals are removed, and desiliconized rough concentrate pulp is obtained; wherein the first collecting agent comprises dodecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium bromide; the desiliconized rough concentrate pulp is subjected to microbubble flotation through an inhibitor, an activating agent and a second collecting agent, aluminum minerals and residual silicon minerals are removed, and titanium concentrate is obtained; wherein the second collecting agent comprises (2-hydroxy-2-methyl propyl) (phenyl) phosphinic acid, diphenyl phosphinic acid and diisooctyl phosphinic acid.

The application discloses a flame retardant composition, a resin composite material and applications and parts thereof, and belongs to the technical field of flame retardants. The application combines dihydrocarbyl-substituted phosphinic acid salts and monohydrocarbyl-substituted phosphinic acid salts, controls the dosages of the two within a specific range, and contains a specific amount of dihydrocarbyl-substituted phosphinic acid salts with a tertiary carbon structure, so that the prepared flame retardant composition can improve the flame retardancy and light aging yellowing resistance when applied to resin, and is suitable for preparing electronic and electrical products.