112 results about "Phosphinidene" patented technology

The invention provides a polymer additive and application thereof. The polymer additive is prepared from the following components in parts by mass: 30 to 90 parts of diethyl phosphinate, 0.01 to 3 parts of ethyl phosphonate, 5 to 67 parts of dialkyl phosphinate and 0.01 to 5.5 parts of alkyl phosphinate. The dialkyl phosphinate has a structure as shown in a formula I, and the alkyl phosphinate has a structure as shown in a formula II. According to the invention, through design and compounding synergy of various phosphonates, the flame-retardant effect can be obviously improved, so that the polymer additive has excellent and efficient flame retardance. The polymer additive is used in a polymer material, and a polymer composition containing the polymer additive can have excellent flame retardant property, good toughness, high impact strength and excellent mechanical property and humidity and heat resistance under the condition that the addition amount is small.

The invention provides a polyamide composition and application thereof. The polyamide composition comprises the following components in parts by mass: 40-99.5 parts of polyamide, 10-45 parts of a reinforcing material and 5-35 parts of a flame retardant, the flame retardant is prepared from the following components in parts by mass: 30 to 90 parts of diethyl phosphinate, 0.01 to 3 parts of ethyl phosphonate, 5 to 67 parts of dialkyl phosphinate and 0.01 to 5.5 parts of alkyl phosphinate. According to the invention, by introducing the specific flame retardant, an efficient flame retardant effect can be exerted, so that the polyamide composition has excellent flame retardant property and excellent impact resistance.

Provided herein are compositions and methods for removing / recovering heavy metal ions in a phosphoric acid-containing stream by mixing a dialkyldithiophosphate compound having at least one alkyl chain length of C8 to C18, a dialkyldithiophosphate compound having at least one alkyl chain length of C8 to C18, and a dialkyldithiophosphate compound having at least one alkyl chain length of C18 to C18, reagents of at least one dialkyldithiophosphinate compound and at least one surfactant are added to a phosphoric acid solution or slurry to form heavy metal ion complexes, and the heavy metal ion complexes are separated from the solution or slurry.

The invention relates to the field of phosphorus-nitrogen flame retardants, and discloses a preparation method and application of a novel phosphorus-containing nitrogen oxide flame retardant, the preparation method comprises the following steps: S1, under the protection of nitrogen, dissolving diphenylphosphinyl hydroxylamine and triethylamine in a tetrahydrofuran solvent to prepare a reaction substrate solution; s2, slowly dropwise adding a diphenylphosphinyl chloride solution into the solution, and then sufficiently carrying out the reaction in a staged heating and heating reflux mode; s3, cooling and filtering to remove solid byproducts generated by reaction, and concentrating filtrate to obtain a crude product solid; and S4, recrystallizing and purifying the crude product by using ethyl acetate, and finally heating and drying the obtained crystal under a vacuum condition to obtain the product. An N-O group is innovatively introduced into the molecular structure of the flame retardant, so that the effect of efficiently capturing gas-phase free radicals in cooperation with a phosphorus-containing group is achieved, and the substantive technical progress that the material can be endowed with excellent flame retardant property with extremely low addition amount is realized.

The invention discloses a PVC / PU modified material and a preparation method thereof, and belongs to the technical field of high polymer materials. The PVC / PU modified material comprises the following raw materials in parts by weight: 80-100 parts of PVC, 30-40 parts of PU, 10-20 parts of a plasticizer, 4-8 parts of a modified flame-retardant anti-aging agent, 2-4 parts of a stabilizer and 3-5 parts of a lubricant. The preparation method comprises the following steps: carrying out a reaction on cyanuric chloride and N-phenyl p-phenylenediamine to prepare an intermediate 1, carrying out a reaction on the intermediate 1 and 1-amino-10-undecene to prepare an intermediate 2, carrying out a reaction on diphenyl phosphinyl chloride and 1-amino-10-undecene to prepare an intermediate 3, and finally carrying out a reaction on the intermediate 2 and the intermediate 3 to prepare the modified flame-retardant anti-aging agent. The PVC / PU modified material prepared by the invention has excellent anti-aging performance and flame retardant performance.

The invention provides a nano film-coated flame-retardant nylon filament and a preparation method thereof, and relates to the technical field of novel flame-retardant materials. Comprising a component A and a component B. The component A comprises the following raw materials in percentage by mass: 50-85% of polyamide slices; 10 to 40 percent of a melamine compound; 1 to 10% of diethyl phosphinate; 1-10% of a nanometer inorganic substance; 0.5 to 3 percent of antioxidant; and the component B is a polyamide slice. According to the invention, by compounding the melamine compound and the diethyl hypophosphite and combining with the assistance of the nano inorganic matter, the dispersity and the bonding strength of the flame retardant in polyamide are optimized; meanwhile, the nano inorganic matter can construct a compact physical barrier layer, so that the flame-retardant efficiency is improved; and the nano inorganic matter can also improve the thermal stability of the flame retardant, and finally industrial preparation of the nano film-coated flame-retardant nylon filament which has the characteristics of high flame-retardant efficiency and low molten drop and can be produced on a large scale is realized.

The invention discloses a polyamide composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The invention provides a polyamide composite material. The polyamide composite material comprises the following components in parts by weight: 30-60 parts of polyamide resin, 12-32 parts of a brominated flame retardant, 4-12 parts of organic phosphinate, 0.1-1 part of a zirconium compound, 0-50 parts of glass fibers, 0-3 parts of an antioxidant and 0-3 parts of a lubricant, and the particle size D50 of the zirconium compound is 0.08-2 [mu] m. According to the antimony-free halogen-containing flame-retardant polyamide composite material provided by the invention, a traditional bromine-antimony flame-retardant system is synergistically replaced by the organic phosphinate and the zirconium compound, and the prepared polyamide composite material has excellent mechanical properties, flame retardance and thermal decomposition stability.

The invention relates to the field of coatings, and discloses a self-cleaning nano-coating glass plate and a preparation method and application thereof.The nano-coating is prepared from organic silicon resin, epoxy resin, modified nano titanium dioxide, long-chain alkyl methyl silicone oil, a curing agent and a diluent; the modified nano titanium dioxide is prepared by grafting a modified silane coupling agent and nano titanium dioxide, wherein the modified silane coupling agent is prepared by reacting a modified phosphorus-containing antibacterial monomer with vinyltriethoxysilane; the modified phosphorus-containing antibacterial monomer is prepared by reacting eugenol with N-bromosuccinimide, then reacting with 2-amino-4-methylthiazole, further reacting with diphenyl phosphinyl chloride, and reacting the obtained phosphorus-containing antibacterial monomer with 1, 1, 3, 3-tetramethyldisiloxane; the long-chain alkyl methyl silicone oil is prepared by using octamethylcyclotetrasiloxane, dodecyl methyl dimethoxy silane and hexamethyldisiloxane as raw materials, and the prepared nano coating has a super-hydrophobic surface and also has excellent antibacterial activity, wear resistance and flame retardance.

The organic phosphonic acid polymer flame retardant is prepared by taking organic phosphinic acid containing alkylene as an initiator, and the organic phosphonic acid polymer flame retardant is high in phosphine content and convenient to synthesize. The synthesized organic phosphonic acid polymer flame retardant can provide better flame retardant property under the condition of lower additive amount, and as the organic phosphonic acid polymer flame retardant is a polymer, has large molecular weight and does not contain metal ions, a better bicontinuous phase is formed in resin, so that the resin has higher retention rate of mechanical property and electrical property, and the flame retardant has better flame retardant property. The flame retardant can be widely applied to the technical field of flame retardants.

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.

Compositions and products formed thereof are based on glass fiber-reinforced polyamide admixed with at least one secondary aromatic amine, at least one phosphinic acid derivative and bis(2,4-di-t-butylphenyl)pentaerythritol diphosphate in amounts to improve ageing behavior in the form of improved preservation of the elongation at break and impact toughness, improved color preservation or improved color stability, and simultaneously improved UV stability after thermal ageing by comparison with products based on glass fiber-reinforced polyamide with such a mixture.

This invention provides a disubstituted phosphonate compound, its preparation method, and its applications, belonging to the technical field of organophosphorus flame retardants. The disubstituted phosphonate compound provided by this invention exhibits excellent flame retardant properties. It is synthesized in a one-step process using phosphonates and halogenated compounds as raw materials. Compared to existing traditional synthesis methods, this method offers higher yields, fewer and easier-to-separate byproducts, a simpler process, shorter processing time, greater safety and environmental friendliness, lower cost, and easier implementation. The flame-retardant epoxy resin cured products prepared using the disubstituted phosphonate compound as a raw material exhibit excellent flame retardant properties and are transparent and clear. The flame-retardant epoxy resin cured product specimens prepared in Examples 1-3 of this invention show significantly better flame retardant effects than those in Comparative Examples 1-2. Furthermore, the flame-retardant epoxy resin cured products prepared in Examples 1-3 are all clear and transparent with superior physical properties.

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 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.

Provided are a copolyester composition comprising a metal phosphinate flame retardant, an acrylic silicone impact modifier and a silicate mineral that has improved flame-retardant properties while providing high tensile and / or flexural modulus and retaining thermal and impact properties, methods of making the copolyester composition and articles made from the copolyester composition.

Disclosed is a long fiber reinforced polymer composition having excellent flame retardant properties. The flame retardant composition may include a flame retardant system that includes a metal phosphinate in combination with a high level of a synergist (e.g., a polyphosphate). The composition can exhibit excellent flame retardant properties at a very small thickness.

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.

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.

A flame retardant polyamide composition includes a polyamide, a non-halogenated phosphinate based flame retardant, an impact modifier including an olefin / acrylate copolymer / terpolymer, a flame retardant synergist, and an optional enhancer. The flame retardant polyamide composition exhibits a pass value measured by IEC 60695-2-11 for the glowing filament end product test, a pass value measured by IEC-60695-2-13: 201 for the glowing filament ignition test, a pass value measured by IEC-60695-2-13: 201 for UL94 performance at 0.8 mm (Grade V0), and an elongation at break of greater than 2.7% as measured by ISO Test No. 527: 2012.

The invention relates to an organic phosphorous compound flame retardant, their preparation methods and applications. The organic phosphorous compound flame retardants are prepared by drop-wise adding at least one from the soluble salts of di-alkyl hypophosphorous acid or soluble salts of mono-alkyl hypophosphorous acid as well as at least one from the soluble salts of alkyl phosphorous acid or soluble salts of phosphorous acid into the solution of soluble non-halogen salt of II-IV valent metal to react, or drop-wise adding at least one from the di-alkyl hypophosphorous acid or mono-alkyl hypophosphorous acid, and at least one from the alkyl phosphorous acid or phosphorous acid into at least one from the active oxides or hydroxides of II-IV valent metal to react.

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 invention discloses a diethylphosphinic acid-piperazine phosphate flame retardant as well as a preparation method and application thereof, and aims to solve the problems of low flame retardant efficiency and poor compatibility of the conventional phosphorus-nitrogen flame retardant. The preparation method of the diethylphosphinic acid-piperazine phosphate flame retardant comprises the following steps: 1, adding piperazine and sodium diethylhypophosphite into a reaction device, adding distilled water, stirring and heating; 2, placing hydrochloric acid in a constant-pressure dropping funnel, dropwise adding hydrochloric acid, and heating for reaction; 3, adding phosphoric acid, heating for reaction, and cooling for crystallization; and 4, carrying out suction filtration and washing on the reaction liquid, and drying to obtain the phosphorus-nitrogen flame retardant diethyl phosphinic acid-piperazine phosphate. The PDHP flame retardant disclosed by the invention has good compatibility with a TPS material matrix. The flame retardant contains P-O, P-C and piperazine groups at the same time, and shows an efficient flame retardant effect in TPS. The TPS flame retardant is applied to TPS flame retardant modification.

The invention provides organic aluminum phosphonate and a preparation method and application thereof.The organic aluminum phosphonate has the structure shown in the formula I. The organic aluminum phosphonate is amino trialkyl aluminum phosphonate, molecules of the organic aluminum phosphonate contain a specific content of crystal water and a specific crystal structure, and the organic aluminum phosphonate has excellent flame retardance and stability and can cooperate with dialkyl phosphinate to achieve the flame retardant effect; according to the present invention, the flame retardant is added, such that the polymer composition containing the flame retardant has advantages of excellent flame retardant property, excellent high temperature resistance, excellent high humidity resistance, no auxiliary agent precipitation problem in severe environments such as high temperature, high humidity and the like, excellent color value and excellent light transmittance, good processability, and high injection molding part qualification rate.

A copolyester composition comprising a metal phosphinate flame retardant, a polymeric impact modifier and / or a reinforcing filler material that has improved flame-retardant properties while providing high impact strength, elongation at break, and tensile and / or flexural modulus, methods of making the copolyester composition and articles made from the copolyester composition.

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 high-efficiency halogen-free plastic flame-retardant additive and a preparation method thereof, and relates to the technical field of plastic additives, the high-efficiency halogen-free plastic flame-retardant additive is prepared from the following raw materials by weight: 35-45 parts of a modified porous nanoscale flame-retardant oxide / expanded graphite compound, 8-10 parts of organic phosphinic acid metal salt, 10-12 parts of a phosphorus synergist, 10-12 parts of a nitrogen synergist, and 3-5 parts of a coupling agent; the modified porous nanoscale flame-retardant oxide / expanded graphite compound is a porous nanoscale flame-retardant oxide / expanded graphite compound co-modified by 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, 2, 4, 6-trivinyl boroxane and diphenyl (4-vinyl phenyl) phosphine oxide. The additive is good in environmental protection property, remarkable in flame retardant effect, small in addition amount, good in compatibility with a plastic matrix and small in negative influence on mechanical properties of plastics.