853 results about "Phosphorus containing" patented technology

The invention discloses a process and equipment for synthesizing fluorapatite from wastewater, the equipment comprises a blending tank, a dispensing tank, a crystallization fluidized bed reactor, a reaction tank, a coagulation tank, a flocculation tank, a sedimentation tank, a pH detection device, a lift pump and a control system, fluorine-containing sewage and phosphorus-containing sewage are mixed in the blending tank, so that the molar ratio of fluorine to phosphorus is 0.34-0.4; the method comprises the following steps: adding fluorapatite into a reaction tank, adjusting the pH value to 7.5-8.5, pumping the fluorapatite and lime slurry into a crystallization fluidized bed reactor according to a calcium-phosphorus molar ratio of (3-3.5): 1, carrying out a crystallization reaction, naturally airing the generated fluorapatite crystals, carrying out a reaction on crystallization treatment water and the lime slurry in the reaction tank to remove fluorine and phosphorus, carrying out coagulation, flocculation and precipitation treatment, and discharging the effluent after reaching the standard. The high-quality fluorapatite product is prepared from the fluorine-containing sewage and the phosphorus-containing sewage, so that the preparation cost is low, and resourceful treatment of the fluorine-containing sewage and the phosphorus-containing sewage is realized.

The invention relates to a phosphorus-free zinc-free seawater special-purpose scale and corrosion inhibitor, which comprises, by weight, 20-25% of sulfonic acid modified polyaspartic acid, 8-12% of quaternized chitosan, 5-10% of a sulfonate copolymer, 5-10% of polyepoxysuccinic acid, 1-3% of benzotriazole or methyl benzotriazole, 0.5-1% of sodium tungstate, and the balance of deionized water. According to the formula, traditional corrosion inhibitors such as phosphorus and zinc are completely abandoned, functions are achieved through natural polymer derivatives such as sulfonic acid modified polyaspartic acid and quaternized chitosan, and the scale and corrosion inhibitor has the following environmental protection advantages that the scale and corrosion inhibitor does not contain phosphorus and zinc elements at all, and water eutrophication and heavy metal accumulation caused by a traditional phosphorus and zinc formula are avoided.

The invention is suitable for the technical field of flame retardance of high polymer materials, and provides a core-shell structure graphite phase carbon nitride derivative and a preparation method thereof.The derivative is prepared by the steps that a precursor containing phosphorus and boron elements is mixed with melamine, and phosphorus / boron co-doped graphite phase carbon nitride is prepared through a high-temperature thermal polymerization reaction; and then assembling the phytic acid copper on the surface of the graphite-phase carbon nitride in an in-situ growth manner by adopting an aqueous solution self-assembly method to construct a derivative with a core-shell structure. The invention provides the graphite phase carbon nitride derivative with the core-shell structure, which is green, environment-friendly, efficient and flame-retardant and simple and convenient in process, and the preparation method of the graphite phase carbon nitride derivative, and the graphite phase carbon nitride derivative has wide application prospect and industrialization value.

The invention discloses a phosphorus-sulfur synergistic flame retardant with high gas phase activity, a durable flame-retardant nylon fabric and a preparation method of the flame-retardant nylon fabric, and relates to the technical field of flame-retardant nylon fabric preparation.The preparation method of the phosphorus-sulfur synergistic flame retardant comprises the steps that 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and polyepoxide are mixed and heated to be molten for a reaction, and the phosphorus-sulfur synergistic flame retardant is obtained; obtaining an intermediate after the reaction is finished; the intermediate and a thiophenethiol derivative are subjected to a click chemical reaction, and a 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative containing phosphorus and sulfur is obtained; the preparation method comprises the following steps: dissolving a 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative containing phosphorus and sulfur into a mixed solvent of ethanol and water, so as to obtain the phosphorus-sulfur synergistic flame retardant with high gas phase activity. The raw materials are safe and environmentally friendly, the preparation method is simple, and the prepared flame-retardant nylon fabric is excellent in flame retardance and washing resistance and free of pollution in the using process.

The invention relates to the technical field of wastewater purification, in particular to a phosphorus-containing wastewater treatment system. Comprising a pre-purification unit, a deep purification unit, a membrane concentration unit and a multi-effect evaporation unit which are sequentially connected, the pre-purification unit is used for diluting phosphorus-containing wastewater and filtering impurities; the deep purification unit is used for receiving the wastewater treated by the pre-purification unit and filtering multivalent metal cations, macromolecular substances and divalent salts in the wastewater; the membrane concentration unit is used for receiving the wastewater treated by the deep purification unit and evaporating water at low temperature under vacuum negative pressure and steam heating so as to concentrate phosphoric acid; and the multi-effect evaporation unit is used for receiving the phosphoric acid concentrated by the membrane concentration unit and further evaporating water under steam heating so as to further concentrate the phosphoric acid, so that a phosphoric acid product with the concentration reaching the selling standard is obtained. The method is simple in process and low in operation energy consumption, phosphorus-containing wastewater can be efficiently recycled, pollution to the environment is reduced, and economic benefits are improved through recycling of phosphorus resources.

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 preparation of isotropic flame-retardant bacterial cellulose aerogel and fire early warning application of the isotropic flame-retardant bacterial cellulose aerogel, and belongs to the technical field of aerogel materials. The preparation method of the aerogel comprises the following steps: (1) adding phosphorus / nitrogen-containing bridged organosiloxane and tetraethyl orthosilicate into bacterial cellulose dispersion liquid in proportion, and then stirring to obtain milk white uniform and stable turbid liquid; and (2) heating and curing the milky white turbid liquid, then precooling, and finally freeze-drying to obtain the isotropic flame-retardant bacterial cellulose aerogel. The aerogel disclosed by the invention is a cellulose-based aerogel material with flame-retardant and heat-insulating properties, has a remarkable isotropic flame-retardant characteristic, can effectively resist flame spread in all directions, is high in carbonization efficiency, can realize early detection and early warning of a fire disaster, and has a great application prospect in the field of fire disaster early warning.

The invention discloses a grading reaction crystallization recovery process and system for semiconductor fluorine-containing and phosphorus-containing waste liquid, the fluorine-containing and phosphorus-containing waste liquid and a lime solution react in a fluorine recovery crystallization reactor under the condition that the pH is 3-4 to form calcium fluoride crystals, and the calcium fluoride crystals are dehydrated to obtain calcium fluoride particle crystal products; the effluent of the fluorine recovery crystallization reactor, the calcium fluoride crystal dehydration filtrate, the lime solution and the calcium chloride solution react in a secondary reaction tank under the condition that the pH is 5-6, and calcium fluoride, fluorapatite, silicon dioxide and silicon-aluminum precipitates are removed through coagulation, flocculation and precipitation; effluent of the second-stage reaction tank, the lime solution and the calcium chloride solution react in the phosphorus recovery crystallization reactor under the condition that the pH is 7-8 to generate hydroxyapatite crystals, and the hydroxyapatite crystals are dehydrated to obtain hydroxyl calcium phosphate particle crystal products. Meanwhile, a high-purity calcium fluoride crystal product and a hydroxyl calcium phosphate crystal product are produced, and fluorine and phosphorus are recycled.

The invention relates to a preparation method of high-purity vanadium pentoxide, in particular to the field of high-purity vanadium pentoxide, which comprises the following steps: adding an impurity removal agent into a phosphorus-containing vanadium solution to remove impurities, and then carrying out solid-liquid separation to obtain filtrate; the obtained filtrate is sequentially subjected to first pH value adjustment, second pH value adjustment, ammonium salt vanadium precipitation, dehydration, calcination deamination and melting, and high-purity vanadium pentoxide is obtained; wherein the impurity removing agent is prepared from calcium salt and a flocculating agent; the final pH value of the first pH value adjustment is 4.5-5.5; the final pH value of the second pH value adjustment is 1.8-2.2. According to the preparation method provided by the invention, the vanadium in the vanadium liquid is efficiently recovered by matching the metallographic phase specific impurity removal process of the vanadium liquid with pH value adjustment, the purity of the obtained vanadium product is greater than or equal to 99.9%, and the recovery rate of the vanadium is greater than or equal to 98%.

The invention provides a phosphorus-based ionic liquid flame-retardant polymer solid electrolyte and a preparation method and application thereof, belongs to the technical field of polymer solid electrolyte materials, and relates to a phosphorus-containing group flame-retardant ionic liquid polymer electrolyte and a preparation method thereof. The invention aims to overcome the problems that the polymer electrolyte in the prior art is poor in safety and the battery performance needs to be further improved, and provides the ionic liquid polymer electrolyte with the flame-retardant characteristic, the polymer electrolyte can greatly improve the safety performance of the battery while improving the battery performance, and the service life of the battery is prolonged. The phosphate group-containing ionic liquid has the advantages that the phosphate group-containing ionic liquid can be used as a polymer matrix of a polymer solid electrolyte, so that enough mechanical strength is ensured, phosphate radicals play a flame-retardant effect in a reaction process, a combustion reaction can be interrupted, and the safety performance of a battery can be greatly improved while the performance of the battery is improved.

This invention relates to a highly efficient functional ceramsite for purifying phosphorus-containing wastewater, its preparation method, and its application. Based on a complementary functional strategy, it uses natural clay rich in Al2O3 and SiO2 as a binder and calcium-rich industrial solid waste as the calcium-rich active component. Functional additives are also added to mitigate pH changes caused by calcium oxide reactions. The above raw materials are calcined at high temperature to obtain inexpensive, calcium-rich functional ceramsite with high mechanical strength, large adsorption capacity, and ecological safety. This effectively solves the common problems of increased water pH and poor phosphate adsorption capacity at neutral pH in calcium-based ceramsite, achieving highly efficient phosphorus purification in water. This invention uses inexpensive and readily available natural clay and calcium-rich industrial solid waste as raw materials, resulting in low cost, good effect, and effective application in the treatment of low-pollution water.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a method for preparing 5-methylfurfural by using 2-methylfuran. The special solid acid catalyst is used for replacing traditional phosphorus oxychloride, hydrogen chloride and phosphorus-containing wastewater are eliminated from the source, and the sulfolane is used for replacing DMF (Dimethyl Formamide), so that solvent residues in the product are reduced. The solid catalyst SO4 < 2-> is modified to form a strong Bronsted acid site (-SO3H) which cooperates with Ce < 3 + > / Ce < 4 + > redox to inhibit carbon deposition, selectively activate 2-methylfuran alpha-C and inhibit side reactions, so that the selectivity and yield of a target product are improved. Na2CO3 neutralization is replaced by electrochemical neutralization, salt slag solid waste is eliminated, and environmental pollution is reduced. After the organic phase is dried and dewatered through a molecular sieve, most of the solvent is removed through rotary evaporation, and the residual crude product is subjected to centrifugal molecular distillation, so that unreacted raw materials and trace impurities are effectively removed, and the product purity is remarkably improved.

The invention discloses a method for detecting the purity of a phosphorus-containing flame retardant, and belongs to the technical field of flame retardant detection. The specific test method comprises the test steps of selecting a solvent, preparing a to-be-tested solution, determining the maximum absorption wavelength, determining absorbance, calculating the purity of a sample and the like, and analyzing and processing an experimental result. The solvent is filtered through a 600-mesh screen, the influence of impurities in the solvent on an experimental result is eliminated, and the scientificity of the experimental result is ensured by parallelly determining the average value recorded for three times; the testing method has the advantages of low cost, simplicity and convenience in operation, short detection period and the like, and can realize rapid detection of a plurality of samples based on multiple stations of an ultraviolet-spectrophotometer, so that the working efficiency is improved; meanwhile, the method for detecting the purity of the phosphorus-containing flame retardant provided by the invention can be used for comparing the quality of products from different manufacturers and the batch stability of the products at the same time, and is beneficial for enterprises to control the quality of the products.

The invention relates to an exosome-coated phosphorus-containing dendrimer nano-composite as well as a preparation method and application thereof. The nano-composite is prepared from exosome derived from mesenchymal stem cells, a hydroxyl-terminal phosphorus-containing dendrimer and quercetin. The exosome derived from the mesenchymal stem cells is used as a carrier, so that not only are good biocompatibility and anti-inflammatory activity achieved, but also the bioavailability of the phosphorus-containing dendrimer and quercetin can be improved. The phosphorus-containing dendrimer and quercetin exert anti-inflammatory and anti-oxidation effects by promoting microglial cells to be polarized to M2 type and removing active oxygen, so that neuronal cells are protected from apoptosis. The preparation method has the advantages of being simple, easy to operate, good in biocompatibility and the like, and the provided strategy has good development prospects and application values in treatment of Parkinson's disease or other neurodegenerative diseases.

A preparation method of the cardanol-based phosphorus-containing side group novolac epoxy resin comprises the following steps: (1) in the presence of a catalyst A, carrying out a stirring reaction on cardanol and an aldehyde compound at 80-110 DEG C for 3-10 h to prepare an intermediate A; (2) stirring the intermediate A and a phosphorus-containing compound at 50-150 DEG C to react for 10-24 hours to prepare an intermediate B; and (3) in the presence of a catalyst B, stirring and reacting the intermediate B and epichlorohydrin at 70-110 DEG C for 2-6 hours, and in the presence of a catalyst C, stirring and reacting at 30-65 DEG C for 1-4 hours to prepare the cardanol-based phosphorus-containing side group novolac epoxy resin. Through a rigid structure on a main chain of the novolac epoxy resin, a phosphorus-containing structure on a side chain of the novolac epoxy resin and an epoxy group, the toughness and flame retardance of an epoxy cured product can be improved on the premise that the thermal stability is not reduced, and the novolac epoxy resin has an extremely good application research prospect.

The invention relates to a transparent phosphorescence-containing cured flame-retardant coating as well as a preparation method and application thereof. The transparent phosphorescence-containing cured flame-retardant coating comprises the following components: phosphorus-containing polyurethane acrylate, polyurethane acrylate, a double-bond-containing polyurethane organosilicon prepolymer, a nitrogen-containing acrylic monomer, a phosphorus-based flame retardant A, a phosphorus-based flame retardant B, silica sol, a reactive diluent B, a silane coupling agent and other auxiliaries. The coating disclosed by the invention has adhesive force, flame retardance and weather resistance, and can be directly cured on a light flexible photovoltaic module panel and a back plate through UV to achieve transparent, fireproof, flame-retardant and weather-resistant effects.

The invention discloses a novel phosphorus-containing macromolecular flame retardant and a preparation method and application thereof, the flame retardant is a polymer with a general formula (I), the main chain of the flame retardant is composed of an olefin-containing phosphonate structural unit, and the side chain R2 is a phosphonate group or a phosphonate metal salt group. The preparation method comprises the following steps: firstly, carrying out reaction on trialkyl phosphite and halogenated olefin containing active groups to efficiently prepare a functional monomer containing polymerizable double bonds and phosphonate side chains; then carrying out free radical polymerization to obtain a macromolecular polymer; the phosphonate can be further partially or completely hydrolyzed and complexed with multivalent metal ions to form the flame retardant with an ionic cross-linked structure. The macromolecular flame retardant is high in phosphorus content, good in thermal stability and excellent in compatibility with a polymer matrix, can play a flame-retardant role in a condensed phase and a gas phase at the same time, and effectively overcomes the problems that a micromolecular flame retardant is easy to migrate and poor in durability, and the mechanical property of a matrix material is reduced. The preparation method is efficient, controllable and suitable for continuous production.

The invention discloses a phosphorus-nitrogen synergistic flame-retardant benzoxazine / epoxy resin composite material and a preparation method thereof. Firstly, a phenolic compound and DOPO react to generate an intermediate product, and then the intermediate product, an amine compound and paraformaldehyde are subjected to a dehydration condensation reaction to generate the phosphorus-nitrogen synergistic flame retardant benzoxazine. The phosphorus-nitrogen synergistic flame-retardant benzoxazine is added into epoxy resin for thermocuring to obtain the composite material. The prepared benzoxazine flame retardant contains phosphorus and nitrogen elements, the nitrogen-based flame retardant has the advantages of low pollution, low smoke, good compatibility with EP and the like, and a quenching effect, a dilution effect and a carbon layer barrier effect can be generated in the combustion process to prevent further combustion of flames. The composite material has better flame retardant property, can effectively reduce the risk of fire hazard caused by overheating or short circuit of equipment, and ensures the safe and stable operation of energy equipment.

The invention discloses a flame-retardant epoxy resin coating and a preparation process thereof, and relates to the technical field of flame-retardant epoxy coatings. 20-50 parts of a curing agent; 5-30 parts of a modified flame retardant; 10-30 parts of an organic solvent; 0.1 to 5 parts of an auxiliary agent; the modified flame retardant is an organic-inorganic hybrid polymer containing phosphorus, nitrogen and silicon. By introducing a hyperbranched structure containing phosphorus, nitrogen and silicon, synergistic flame retardance of a gas phase and a condensed phase is achieved, a compact carbon layer is formed when the coating is heated, the adhesive force of a coating and a base material is enhanced through the chemical bonding effect, dispersity and toughness are improved through a unique molecular structure, brittle cracking is avoided, and the coating has good flame retardance. The problems that a traditional coating is prone to migration, poor in adhesive force and insufficient in water resistance are solved, and the paint has excellent comprehensive performance.

The invention discloses an iron-carbon composite material for heavy metal contaminated soil remediation and a preparation method of the iron-carbon composite material, and belongs to the field of heavy metal contaminated soil remediation. The iron-carbon composite material comprises rape straw, hydroxyapatite, zero-valent iron, sulfydryl functionalized magnetic cerium oxide and nitrogen-doped graphene quantum dot-sodium alginate. The sulfydryl-functionalized magnetic cerium oxide is prepared from cerium nitrate and ferric nitrate through precipitation, calcination and sulfhydrylation, and the nitrogen-doped graphene quantum dot-sodium alginate is prepared from citric acid and urea through microwave reaction, dialysis, mixing and freeze drying; the preparation method comprises the following steps: treating straws and hydroxyapatite to obtain ball-milled phosphorus-containing biochar, mixing the ball-milled phosphorus-containing biochar with zero-valent iron and two modifiers, and carrying out molding and high-temperature calcination to obtain the phosphorus-containing biochar-based composite material. The material has a remarkable remediation effect on the heavy metal contaminated soil, can effectively reduce the activity of heavy metals in the soil, has the characteristics of environmental friendliness and high stability, and is suitable for treating the soil compositely contaminated by the heavy metals such as cadmium and lead.

The utility model provides a phosphorus-containing waste solidification treatment system, which belongs to the technical field of hazardous waste solidification treatment and comprises a hydrolysis system, a concentration system, a solidification system and a waste gas treatment system, and the waste gas treatment system comprises a first waste gas treatment system and a second waste gas treatment system. The outlet end of the hydrolysis system is communicated with the inlet end of the concentration system through a pipeline and a pump, the outlet end of the concentration system is communicated with the inlet end of the curing system through a pipeline and a pump, waste gas outlets are formed in the hydrolysis system, the concentration system and the curing system respectively, and the waste gas outlets of the hydrolysis system and the concentration system are communicated with the first waste gas treatment system. The system is simple in structure and convenient to use and operate, phosphorus-containing waste is effectively and directly landfilled after being treated, the treatment process is environmentally friendly and harmless, the cost is low, and waste is treated with waste.

The invention discloses amphiphilic phosphorus-loaded biomass gel and a preparation method and application thereof, and the preparation method comprises the following steps: dissolving a hydrophilic natural polymer material in a solvent to form a uniformly dispersed biomass gel emulsion; activating the biomass gel emulsion by an activating agent A and an activating agent B to obtain pre-activated biomass gel emulsion; dissolving a long-chain alkyl material in water to form a uniformly dispersed emulsion, and uniformly mixing the uniformly dispersed emulsion with the pre-activated biomass gel to obtain a modified biomass gel emulsion; adding a phosphorus-containing solvent and a pore-foaming agent, and mixing to form a porous gel emulsion; after the porous gel emulsion and the biomass gel emulsion are fully mixed, a cross-linking agent is added for a cross-linking reaction. The gel obtained by the invention has an amphiphilic structure of a hydrophobic microcell and a phosphorus-containing hydrophilic group, can play a synergistic effect of electrostatic attraction and hydrophobic repulsion, and realizes selective separation and recovery of rare earth elements in water; the preparation method is simple, raw materials are green, and the method is suitable for large-scale production and has good application prospects.

A process includes contacting one or more bio feedstocks and one or more waste plastic feedstocks with a deactivated cracking catalyst comprising a phosphorus-containing ZSM-5 catalyst at catalytic cracking conditions to obtain a product stream containing hydrocarbons, and separating at least one hydrocarbon fraction from the product stream, wherein the deactivated cracking catalyst contains at least one metal contaminant.

The application discloses a vaccine and a preparation method thereof, and the preparation method comprises the following steps: mixing an acidic protein antigen solution containing a phosphate buffer solution with an aluminum adjuvant to make the molar ratio of phosphorus and aluminum below 0.9, so as to obtain an acidic protein vaccine; or mixing the aluminum adjuvant with a solution containing phosphate ions to make the molar ratio of phosphorus and aluminum above 0.2, and then mixing the aluminum adjuvant with an alkaline protein antigen solution containing a phosphate buffer solution, so as to obtain an alkaline protein vaccine; wherein the acidic protein antigen is any kind of protein antigen with a net negative charge; and the alkaline protein antigen is any kind of protein antigen with a net positive charge. According to the preparation method, the molar ratio of phosphorus and aluminum is adjusted to a specific range according to the net charge of the protein antigen, so that the isoelectric point of the aluminum adjuvant can be effectively changed, the charge carried by the aluminum adjuvant is opposite to the charge carried by the protein antigen, and then the aluminum adjuvant and the protein antigen are attracted to each other through electrostatic interaction. The vaccine antigen prepared by the method has high antigen adsorption rate and good stability, the preparation method is simple, and the method is suitable for industrial application.

The invention provides a method for removing phosphorus from a cobalt sulfate solution. The method comprises the following steps: providing a cobaltous sulfate solution to be treated; the method comprises the following steps: mixing a to-be-treated cobaltous sulfate solution, a composite polymer soluble ferric salt and a coagulant aid, carrying out precipitation reaction, and separating to obtain phosphorus-containing slag and cobaltous sulfate primary purified liquid; a deep phosphorus removal adsorbent is adopted to adsorb trace phosphorus in the cobalt sulfate primary purification liquid, then trace iron in the cobalt sulfate primary purification liquid generates precipitates in an oxygen-containing atmosphere, and after separation, a cobalt sulfate secondary purification liquid is obtained. According to the method, firstly, the synergistic effect of the composite polymer soluble ferric salt and the coagulant aid is adopted, and primary efficient removal of phosphorus is achieved; then, a deep phosphorus removal adsorbent is used for directionally adsorbing trace phosphorus in the cobalt sulfate primary purification liquid, so that deep removal of phosphorus is further realized; and finally, the residual trace iron is precipitated and separated in the oxygen-containing atmosphere, so that the purity of the secondary purified cobalt sulfate liquid is further guaranteed.

The invention relates to the technical field of batteries, and particularly discloses a composite current collector and a preparation method and application thereof. The composite current collector comprises a thin film substrate, and a phosphorus-containing monomer is introduced into the surface of the thin film substrate through plasma treatment; an aluminum conductive layer disposed on at least one side surface of the film substrate; the surface functional layer is arranged on the surface of one side, far away from the thin film substrate, of the aluminum conducting layer, and the surface functional layer comprises a fluorine-containing polymer layer and a nanotube composite layer which are sequentially arranged from inside to outside. Phosphorus-containing monomers (phosphoric acid groups and ester derivatives thereof) are introduced to a film substrate, oxygen atoms or hydroxyl groups in key functional groups of the phosphoric acid groups and the ester derivatives thereof interact with metal ions strongly to form coordinate bonds to enhance the interface bonding force between an aluminum conductive layer and a PET film, and a surface functional layer is combined to block electrolyte permeation, so that the film has a good anti-corrosion effect. And the nanotubes in the surface functional layer form a three-dimensional conductive network, so that the contact resistance is reduced, and the conductivity is enhanced.

The invention discloses a chromium-free high-temperature-resistant treating fluid, a hot-dip aluminum-zinc environment-friendly coating plate and a preparation method of the hot-dip aluminum-zinc environment-friendly coating plate, and belongs to the technical field of hot-dip aluminum-zinc plates. The treating fluid comprises a corrosion inhibitor, silane, a phosphate radical-containing substance, an inorganic acid and a surfactant, and is prepared step by step according to a specific sequence. The chromium-free coating with the thickness of 0.6-1.2 m can be formed by coating the surface of a hot-dip aluminum-zinc plate with the chromium-free coating in a roller coating manner and curing at the temperature of 80-150 DEG C. The coating does not contain organic matters, does not yellow within 30 minutes at the high temperature of 390 DEG C, has excellent corrosion resistance, fingerprint resistance, alkali resistance and coatability, is suitable for inner plates of high-temperature household appliances such as microwave ovens and ovens, and has the characteristics of environment friendliness and high performance.

This invention relates to a sodium-supplementing material capable of simultaneously replenishing active sodium and sodium hexafluorophosphate, and its preparation and application. The sodium-supplementing material comprises the following raw material components by weight percentage: 10-50% elemental phosphorus, 50-90% sodium fluoride, and 1-5% Ketjen Black. Compared with existing technologies, the phosphorus-based bifunctional sodium-supplementing separator and sodium-supplementing cathode provided by this invention not only possess higher theoretical capacity, effectively compensating for irreversible capacity loss during the first cycle of the battery, but also generate NaPF6 in situ under electrochemical conditions through the synergistic reaction of red phosphorus and sodium fluoride, achieving simultaneous replenishment of active sodium and electrolyte sodium salts, thereby improving the initial coulombic efficiency and long-term cycle performance of the battery.

The invention belongs to the technical field of LED display screens, and particularly relates to a phosphorus-nitrogen-containing UV curing flame-retardant coating, an LED display module and a preparation method of the phosphorus-nitrogen-containing UV curing flame-retardant coating. Compared with the prior art, the UV curing prepolymer containing phosphorus and nitrogen is a cyclotriphosphazene functionalized product, contains phosphorus and nitrogen, and is endowed with an excellent flame retardant effect due to high nitrogen and phosphorus content; the flame-retardant coating has the advantages that the flame-retardant coating contains acryloyloxy which can be cured through UV, each molecular structure contains six curable functional groups, and the overall structural compactness can be improved after curing, so that the heat resistance of the molecular structures is improved, and the flame-retardant coating is applied to LED display modules and displays, can reach UL-94V-0 and 5VA standards and can also reach the BS476-7Class 1 standard; moreover, the coating can be cured by UV, equipment is simple, consumed time is short, production efficiency can be improved, and cost can be saved.

The application relates to the technical field of halogen-free flame-retardant resins, in particular to a high-heat-resistance low-water-absorption reactive phosphorus-containing flame retardant as well as a preparation method and application thereof. The phosphorus-containing flame retardant has a molecular structure as shown in formula 1, wherein the R1 group comprises at least one of,,,,,,,,,, and ; the value of n satisfies 0 < n <= 50, and the value of n is an integer. The phosphorus-containing flame retardant is designed in multiple dimensions through a molecular structure, comprehensively improves the comprehensive performance of a copper-clad plate, and fundamentally solves the water absorption problem of a phosphorus-based flame retardant.