586 results about "Phosphine oxide" patented technology

To sufficiently enhance the curability of an active energy ray-curable ink composition for inkjet printing, which contains (2,4,6-trimethylbenzoyl)bis(p-tolyl)phosphine oxide as a photopolymerization initiator, and preferably to improve the solvent resistance of a cured product. [Solution] An active energy ray curable ink composition for inkjet printing, which has a viscosity of 5 cps or more and 80 cps or less at room temperature, comprises: 10% by mass or more of a monofunctional monomer, 1 to 15% by mass of an amine-modified oligomer, and (2,4,6-trimethylbenzoyl)bis(p-tolyl)phosphine oxide, based on the ink composition; and when the ink composition further contains a black pigment, the ink composition contains a sensitizer.

The invention discloses a wear-resistant and high-temperature-resistant synchronous belt and a preparation method thereof. The wear-resistant and high-temperature-resistant synchronous belt comprises a synchronous belt framework and a synchronous belt rubber sheet, the synchronous belt rubber sheet is prepared from the following raw materials: a fluorosilicone thermoplastic polyurethane elastomer containing a benzene ring structure, an amino-containing hyperbranched liquid crystal polymer, methyl vinyl phenyl silicone rubber, epoxidized natural rubber, molybdenum sulfide nanosheets, reinforced fibers, bis (1-vinyl imidazole-2-) ketone, 2-acrylamido-2-methylpropanesulfonic acid, 4, 4 '-difluoro-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1 The high-temperature-resistant rubber is prepared from 2, 6-hydroxy-2-cyanobenzothiazole, bis (3-aminophenyl) 3, 5-bis (trifluoromethyl) phenylphosphine oxide, a catalyst, a coupling agent, a vulcanizing agent, an anti-aging agent, a scorch retarder and a lubricating agent. The synchronous belt is good in mechanical property, sufficient in high-temperature resistance and cold resistance, good in wear resistance and excellent in aging resistance and flame retardance.

The invention relates to a flame-retardant inorganic quick-setting material and a preparation method thereof, and the flame-retardant inorganic quick-setting material is prepared from the following raw materials: sulphoaluminate cement, aluminum-magnesium hydrotalcite, phosphorus slag powder, waste PBO fiber, an accelerator, a water reducer, a functional auxiliary agent, and 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The functional auxiliary agent comprises structural units introduced by the following monomers: 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, diphenyl (4-vinyl phenyl) phosphine oxide, 1, 3-bis (oxirane methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 10-(4-vinyl phenyl)-10H-phenoxazine and itaconic acid. The material is high in strength, remarkable in rapid hardening and flame-retardant effect, and safe and environment-friendly to use.

The invention discloses an environment-friendly flame-retardant polyester yarn and a preparation method thereof, and relates to the technical field of textile, and the environment-friendly flame-retardant polyester yarn is prepared from the following raw materials in parts by weight: 100 parts of polyester chips, 10-15 parts of a flame-retardant polymer containing an organic salt structure, 1-3 parts of an antioxidant, 0.8-2 parts of a lubricant, 1-2 parts of benzotriazole sodium and 0.8-1.2 parts of quinoline yellow. The flame-retardant polymer containing the organic salt structure comprises a structural unit introduced by the following monomers: bis (3-aminophenyl) (3, 5-bis (trifluoromethyl) phenyl) phosphine oxide, 3, 7-diamino-5-phenylphenazine chloride and 3, 5-isoxazole dicarboxylic acid. The environment-friendly flame-retardant polyester yarn is good in ultraviolet aging resistance and flame retardance, high in strength and sufficient in softness.

The invention discloses a coating type high-molecular flame-retardant material. The composite material is prepared from the following components: organic silicon modified epoxy resin, a bio-based castor oil derivative, hydroxyapatite, carbon nanofibers, expanded graphite, ammonium polyphosphate, zinc borate, nano silicon dioxide, molybdenum oxide, microencapsulated red phosphorus, magnesium hydroxide, melamine cyanurate, aluminum diethylphosphinate, pentaerythritol, trihydroxymethyl phosphine oxide and a silane coupling agent. The coating is prepared from a titanate coupling agent, stearic acid, polyethylene glycol, 2, 6-butylated hydroxytoluene, triphenyl phosphite, 2, 4-dihydroxybenzophenone, sebacic diester, polytetrafluoroethylene micro powder, a modified polydimethylsiloxane flatting agent, organic montmorillonite, a polyether modified silicon defoaming agent and a solvent. The invention has the beneficial effects of high flame retardant efficiency, environmental friendliness, excellent comprehensive performance and excellent processability.

The invention discloses an actinide purification method and device, and belongs to the technical field of medical radioactive isotope separation and purification. The method comprises the following steps: passing a thorium target solution containing actinide through a cation exchange column, and leaching with inorganic acid to obtain a first effluent containing Ac < 3 + >; enabling the first effluent containing the Ac < 3 + > to pass through a TK221 resin extraction column to obtain a second effluent containing the Ac < 3 + >; the second effluent containing Ac3 + passes through a TRU resin extraction column, and actinide is obtained. The TK221 resin also contains phosphine oxide and a small amount of long alkyl chain alcohol on the basis of diglycolamide, and shows better performance on purification of Ac < 3 + >. Meanwhile, the elution acidity in the TRU resin separation process is properly improved, and the outflow speed of Ac, La and Ce can be delayed, so that the effect of separating Ac from La and Ce is achieved, and the yield of 225Ac is improved while the concentration of metal impurities is reduced.

The invention discloses an organic compound containing phenanthroline and phosphine substituent and an organic electroluminescent device containing the same. The organic compound is selected from a structural general formula as shown in a formula I in the specification. By introducing an aryl substituted phenanthroline structure into the structure, a tetradentate ligand coordinated with rare earth metal can be formed, formation of a more stable 8-coordination complex is facilitated, the stability of an n-CGL layer is improved, and by using a phosphine oxide structure in the structure, the limiting capability on the rare earth metal is improved, and the drift voltage is improved. In addition, direct connection between phosphine atoms and large conjugated substituents such as naphthalene is avoided, or larger polycyclic aromatic hydrocarbons such as anthracene, anthracene and pyrene in molecules are avoided, so that the coordination capability of a phosphine-oxygen structure to metals can be enhanced. The invention also finds that when the compound of the formula I structure is used as an n-CGL material and the compound of the formula II structure is used as an electron transport layer material in a combined manner, the injection barrier between interfaces can be reduced, and the driving voltage of the organic electroluminescent device is further reduced. # imgabs0 #

The invention discloses an aluminum substrate UV matt finish paint and a preparation process thereof, and relates to the technical field of paints.The aluminum substrate UV matt finish paint is prepared from, by mass, 10%-20% of modified polyurethane acrylate, 25%-32% of high-functionality aliphatic polyurethane acrylate, 18%-30% of special modified epoxy acrylate resin, 0.5%-2% of dispersing agent, 0.1%-0.5% of defoaming agent, 1%-3% of anti-settling powder and the balance water. The paint is prepared from the following components in percentage by weight: 10 to 15 percent of magnesium silicate mineral, 1 to 10 percent of matting powder, 0.2 to 1 percent of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 3 percent of trimethylbenzoyl-diphenyl phosphine oxide, 1 to 3 percent of acrylate flatting agent, 0.2 to 1.2 percent of polyurea modified polyurethane rheological agent and 5 to 15 percent of trimethylolpropane triacrylate. According to the UV matte finishing paint disclosed by the invention, through compounding of ternary resin and enhancement of nano silicon dioxide, a rigid and tough cross-linked network is constructed, a paint film is free of cracks when being bent at 180 degrees, the adhesive force reaches grade 0, and a coating is resistant to acid and alkali etching liquid and free of corrosion by cooperating with a silane coupling agent and a light stabilization system, and the color difference is delta Elt after the UV matte finishing paint is subjected to high temperature of 260 DEG C; and 1.5, the anti-yellowing performance is excellent.

A photoinitiator including 2 to 6 monoacyl phosphine oxide moieties characterized in that the monoacyl phosphine oxide moieties are linked to each other via their acyl group and that at least 2 monoacyl phosphine oxide moieties have a chemical structure differing in the phosphine oxide part.

The invention provides a method for preparing high-purity hafnium tetrachloride by wet extraction and separation, which comprises the following steps: stirring and leaching hafnium alloy waste serving as a raw material by using HNO3 and HF mixed acid, then adding thioacetamide, adjusting the pH value to 4-5, stirring and filtering; compounding tributyl phosphate, trioctylphosphine oxide and sulfonated kerosene to obtain a composite extracting agent, and stirring and mixing to form a homogeneous organic phase; in a hydrochloric acid medium, controlling the volume ratio of an organic phase to a water phase to be (2.5-3.5): 1, carrying out three-stage counter-current extraction, and standing for phase splitting; the extracted organic phase passes through an adsorption column filled with iminodiacetic acid modified silica gel; and carrying out reverse extraction by using a hydrochloric acid solution, and then carrying out reduced pressure evaporation concentration, cooling crystallization and dehydration to obtain hafnium tetrachloride. According to the method, the zirconium and hafnium separation efficiency in the hafnium tetrachloride preparation process is improved, and the problem that the content of zirconium and hafnium impurities in the product is too high is solved.

The invention discloses a preparation method of silicone rubber and the silicone rubber, and belongs to the field of silicone rubber. The preparation method comprises the following steps: dispersing fumed silica in an acid solution to obtain a fumed silica solution, dispersing chitosan in a dilute acid solution to obtain a chitosan solution, mixing the fumed silica solution and the chitosan solution, stirring, centrifuging, washing and drying to obtain a coated product; mixing the coated product, magnesium hydroxide, raw rubber, a cross-linking agent, a vulcanizing agent and a catalyst, heating and kneading, and vacuumizing to obtain initial silicone rubber; the preparation method comprises the following steps: dissolving 1-hydroxycyclohexyl phenyl ketone into an organic solvent to obtain a solution A, mixing acrylic acid, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide and titanium dioxide to obtain a solution B, soaking initial silicone rubber into the solution A, taking out, airing, soaking into the solution B, and carrying out ultraviolet curing, cleaning and airing to obtain the silicone rubber. The heat-conducting property, the mechanical property and the wet friction property of the silicone rubber are greatly improved.

The invention discloses an organic compound with a plurality of heteroatoms and an organic electroluminescent device comprising the same. The structural general formula of the organic compound is as shown in a formula I, R1 to R4 independently represent any one of hydrogen, deuterium, a substituted or unsubstituted alkyl group with the carbon atom number of C1-C30, a substituted or unsubstituted aryl group with the carbon atom number of C6-C60, a substituted or unsubstituted fused ring aryl group with the carbon atom number of C6-C60 and a group as shown in a formula II, and R1 to R4 independently represent any one of hydrogen, deuterium, substituted or unsubstituted alkyl group with the carbon atom number of C6-C60, substituted or unsubstituted fused ring aryl group with the carbon atom number of C6-C60 and substituted or unsubstituted fused ring aryl group with the carbon atom number of C6-C60. And at least two of R1-R4 represent the group shown in the formula II. According to the organic compound provided by the invention, phosphine oxide and phenanthroline structures are introduced into the structure, under the introduction of high electronegativity atoms such as nitrogen, oxygen and phosphine, the maximum negative electrostatic potential is lower, and the stability and the electron transmission capability of an nCGL material can be improved, so that the driving voltage of the prepared organic electroluminescent device can be effectively reduced, and the organic electroluminescent device can be applied to the field of organic electroluminescent devices. And the luminous efficiency and life are improved. # imgabs0 # I; and # imgabs1 # II.

The invention belongs to the technical field of medicines, and relates to a dimethyl phosphine oxide substituted aniline pyrimidine derivative targeting EGFR mutation, a preparation method and application thereof, and a medicine prepared from the dimethyl phosphine oxide substituted aniline pyrimidine derivative. The invention provides a compound as shown in a formula I. The compounds have outstanding inhibitory activity (at a nanomole level) and selectivity on EGFRT790M / C797S / L858R kinase and EGFRL858R / T790M kinase, have an obvious inhibitory effect on a non-small cell lung cancer cell line, particularly have outstanding selectivity on EGFR mutant cells H1975, and have an obvious inhibitory effect. The compound disclosed by the invention has a remarkable tumor inhibition effect in a nude mouse heterophylloma model and is relatively low in in-vivo toxicity. Therefore, the compound provided by the invention can be used as an epidermal growth factor receptor tyrosine kinase inhibitor to be applied to preparation of anti-lung cancer drugs, and has a good application prospect. And the formula I of the # imgabs0 # is shown in the specification.

An acyl phosphine oxide initiator wherein the acyl group is selected from the group consisting of a benzoyl group substituted by an urea group or an oxalylamide group; a 2,6-dimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,6-dimethoxy benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,4,6-trimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; and a 2,4,6-trimethoxybenzoyl group substituted in position 3 by an urea group or an oxalylamide group.

The invention belongs to the technical field of UV visbreaking polymers, and particularly relates to a UV visbreaking film and a preparation method thereof. Wherein the UV viscosity-reducing film sequentially comprises a base film (1), a first viscosity-reducing adhesive layer (5), a second viscosity-reducing adhesive layer (4) and a release film (3) from bottom to top, the first viscosity-reducing adhesive layer (5) and the second viscosity-reducing adhesive layer (4) both comprise a photoinitiator, the photoinitiator in the first viscosity-reducing adhesive layer (5) is 1-hydroxy-cyclohexyl phenyl ketone, and the content of the photoinitiator in the formula of the adhesive layer is 0.1%-10% by mass; a photoinitiator in the second viscosity-reducing adhesive layer (4) is bis (2, 4, 6-trimethylbenzoyl) phenyl phosphine oxide, and the content of the photoinitiator in the adhesive layer formula is 0.1-10% by mass; in the preparation method, ultraviolet irradiation precuring is carried out, so that the UV viscosity-reducing film has light selectivity and high cohesion strength, and the residual adhesive is remarkably reduced.

The invention discloses a hyperbranched flame retardant as well as a preparation method and application thereof. The flame retardant is prepared by the following steps: dehydrating and pre-polymerizing a boron-containing component (such as tetrahydroxy diborane) and dihydric alcohol (such as 1, 3-propylene glycol), and condensing with trihydroxymethyl phosphine oxide. 4 parts of the flame retardant is added into epoxy resin, phosphorus-containing free radicals can be released in a gas phase for quenching and smoke suppression, a compact boron-containing expanded carbon layer is formed in a condensed phase, and synergistic flame retardance is achieved. The hyperbranched structure can be embedded into an epoxy network, synchronous reinforcement and toughening are achieved, the impact strength is improved by 123.5%, and the tensile strength is improved by 47.7%. The flame retardant has efficient flame retardance (the limit oxygen index is 33.9%, UL-94V-0 level), high transparency and excellent mechanical properties, and is suitable for epoxy resin composite materials in the fields of electronic packaging, aerospace and the like.

The application discloses a kind of rapamycin 40-position hydroxyl alkyl synthesis method, belong to the technical field of drug synthesis.The method is: in inert gas atmosphere, rapamycin is sequentially added into microwave reaction tube, molecular sieve and additive, additive is triphenyl phosphine oxide, tri (4-fluorophenyl) phosphine oxide, tri (4-methoxyphenyl) phosphine oxide, tricyclohexyl phosphine oxide, triphenyl phosphine sulfide, triphenyl phosphine selenide or hexamethylphosphorus triamide;Subsequently, alkylating agent, base and organic solvent are added, sealed, reacted in microwave reaction instrument, cooled, filtered, washed, dried, filtered, purified, to obtain the alkylated product of rapamycin 40-position hydroxyl group.The method compared with the existing rapamycin 40-position hydroxyl group alkyl modification method, simple operation, low cost, short reaction time, less impurities, easy separation, higher yield, up to 79.1%, suitable for industrial production, can provide new ideas for synthesis and development of rapamycin derivatives such as everolimus.

The present invention relates to the technical field of polymer materials, and discloses a halogen-free flame-retardant and temperature-resistant epoxy resin and a preparation method thereof. The epoxy resin is prepared from epoxy resin, nitrogen-phosphorus-silicon tetrafunctional epoxy resin, curing agent and diluent through blending and curing. The nitrogen-phosphorus-silicon tetrafunctional epoxy resin is obtained by using 4-maleimidobenzoic acid, 1,3-bis(3-aminopropyl)tetramethyldisiloxane, bis(4-methoxyphenyl)phosphine oxide and epichlorohydrin as raw materials through condensation, addition and substitution reactions. The nitrogen-phosphorus-silicon has a synergistic flame-retardant effect and plays a good role in heat insulation, mass isolation and oxygen isolation. The tetrafunctional epoxy resin molecule contains more epoxy groups, can react with the curing agent to form more cross-linking points, improve the cross-linking density, and can more effectively disperse and resist stress. The epoxy resin prepared by the present invention has excellent flame-retardant effect, is halogen-free and environmentally friendly, and has good temperature resistance and mechanical properties at the same time.

A UV curable inkjet ink including a free radical polymerizable compound and an acyl phosphine oxide initiator wherein the acyl phosphine oxide initiator includes an acyl group selected from the group consisting of a benzoyl group substituted by an urea group or an oxalylamide group; a 2,6-dimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,6-dimethoxy benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,4,6-trimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; and a 2,4,6-trimethoxybenzoyl group substituted in position 3 by an urea group or an oxalylamide group wherein the urea group and the oxalylamide group include a tertiary amine group positioning a phosphorus atom of the acylphosphine oxide initiator in a 1 to Z position, where position 1 is defined as that of the phosphorus atom and position Z is defined as the nitrogen atom of the tertiary amine group with Z representing an integer of at least 11; and that the acyl phosphine oxide initiator contains no more than two photoinitiating moieties having a phosphine oxide group.

The invention belongs to the technical field of UV ink formula design and digital printing application, and particularly relates to scratch-resistant UV ink, a preparation method thereof and application of the scratch-resistant UV ink to digital printing. The scratch-resistant UV ink comprises the following raw materials in parts by weight: 15-25 parts of epoxy acrylate; 10 to 20 parts of polyurethane acrylate; 15 to 25 parts of a bifunctional monomer; 5-10 parts of a monomer with three functional groups and more than three functional groups; 3 to 5 parts of an alpha-hydroxy ketone photoinitiator; 2 to 4 parts of an acyl phosphorus oxide photoinitiator; 2 to 5 parts of organically modified nano silicon dioxide; 0.1 part to 0.5 part of a flatting agent; 0.5 to 1.5 parts of a dispersing agent; 10 to 15 parts of pigment; the bifunctional monomer is tripropylene glycol diacrylate; the monomer with three functional groups and more than three functional groups is trimethylolpropane triacrylate. The ink has pencil hardness greater than or equal to 3H and excellent flexibility, the adhesive force on substrates such as PC, PET, metal and the like reaches 0 level, the printing process is simplified, and the ink is suitable for digital printing in various scenes.

The invention discloses a lithium dihydrogen phosphate preparation method, which comprises: S1, mixing a refined lithium sulfate solution with an extraction agent solution, and carrying out standing layering to obtain an upper layer solution; s2, mixing the upper-layer solution with a detergent, washing, and separating to obtain a washing solution; s3, mixing the washing liquid with a phosphoric acid solution, and standing for layering to obtain a lower-layer solution; s4, mixing the lower-layer solution with a component regulator; and carrying out solid-liquid separation. An extracting agent in the extracting agent solution comprises at least one of benzoyl trifluoroacetone, trialkyl phosphine oxide and sulfonated calixarene. The specific extraction agent efficiently selects lithium ions to separate impurities, lithium dihydrogen phosphate is obtained through direct reverse extraction after washing, lithium dihydrogen phosphate does not need to be converted into other lithium products to prepare lithium dihydrogen phosphate, and the process production period is shortened. In addition, lithium dihydrogen phosphate is prepared through washing and reverse extraction after impurities are efficiently selected and separated through an extraction agent; the purity is high; the battery grade lithium dihydrogen phosphate can be obtained.

The invention discloses a preparation method of 3, 6-dichloropyridazine, and belongs to the technical field of chemistry. According to the method, 3, 6-dihydroxypyridazine is used as a raw material, an organic solvent and triphenylphosphine oxide are combined to form a dichlorotriphenylphosphine intermediate state which is used as a chlorinating agent, dihydroxyl is substituted to generate 3, 6-dichloropyridazine, triphenylphosphine oxide and solid light are used as raw materials, heating reaction is performed to prepare 3, 6-dichloropyridazine, meanwhile, a one-pot method can be adopted in the two-step reaction, and operation is easy and convenient. The novel preparation method for synthesizing 3, 6-dichloropyridazine provided by the invention has the advantages of low raw material cost, high yield, high gas phase purity and no pollution, is suitable for industrial production, can meet industrial requirements, provides a new idea for later preparation of 3, 6-dichloropyridazine, has the remarkable advantages of high gas phase purity and high yield, and is suitable for industrial production. Wide application prospects are realized.

The invention discloses a method for photocatalytic synthesis of phosphorylated thiophene compounds, and belongs to the technical field of organic synthesis. Carbon quantum dots are used as a photosensitizer, phosphine oxide, thiophene and derivatives thereof are used as raw materials, 2-methyltetrahydrofuran and water are used as solvents, the temperature is controlled to be 25-30 DEG C, reaction is performed for 12-24 h under visible light irradiation, and then column chromatography separation is performed to obtain the phosphorylated thiophene compound. The cheap and easily available carbon quantum dots are used for replacing a noble metal catalyst, so that the method has the advantages of mild reaction conditions, easiness in preparation of the catalyst, green and environment-friendly solvent system, energy consumption reduction, high product yield and the like, and a green synthesis path is provided for phosphorylated thiophene compounds.

The invention discloses a synthesis method of a novel benzosuberone compound, and belongs to the field of organic synthesis. The preparation method comprises the following steps: uniformly stirring methyltriphenylphosphonium bromide in a solvent at room temperature, dropwise adding an n-hexane solution of n-butyllithium in an ice-water bath, stirring a reaction system at room temperature for 30-40 minutes after dropwise adding is completed, then adding an initial raw material phenanthrenequinone 1 in the ice-water bath, transferring the reaction system to 40 DEG C for reaction, and after the reaction is monitored to be complete by a TLC (Thin Layer Chromatography) dot plate, filtering, washing and drying to obtain the phenanthrenequinone 1. And pouring the reaction liquid into a silica gel chromatographic column, and simply filtering by using dichloromethane as an eluent to remove salt and phosphine oxide. And performing rotary evaporation to remove the organic solvent to obtain a crude product, and separating and purifying to obtain a target product 2. The method is short in reaction time and low in reaction cost, provides a practical method for obtaining the seven-membered rigid ring skeleton, and has potential value for synthesis of natural products and bioactive molecules.

The invention relates to the technical field of coatings, in particular to an ultraviolet coating for a metal battery case and a preparation method of the ultraviolet coating. Alpha-H cyano modified acrylate resin, phosphate modified acrylic resin and 50% aldehyde ketone resin are matched to serve as a base material; according to the present invention, inorganic fillers such as mica powder, silica powder, titanium dioxide and fumed silica are matched, and isobornyl acrylate, hydroxyethyl methylacrylate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide, the dispersant, the defoaming agent and the leveling agent are supplemented, such that the coating material has strong adhesion to the base material, and has good adhesion to the surface of the base material; the prepared coating not only has excellent insulating property, high temperature resistance and corrosion resistance, but also can be used for coating batteries with various complex shapes without dead angles, and can greatly improve the application scene and safety performance of the batteries and prolong the service life of the batteries.

The invention discloses a functional polyester yarn and a preparation method thereof. The functional polyester yarn is formed by blending functional synthetic fibers and bamboo fibers according to the mass ratio of (3-5): 0.5. The functional synthetic fiber is prepared from the following raw materials: polyester chips, a functional copolymer, a compatilizer, an antioxidant, a lubricant, 1, 4-diamino-2, 3-dicyanoanthraquinone and (3, 6-diamino-9-acridinyl) boric acid. The functional copolymer comprises structural units introduced by the following monomers: diphenyl (4-vinyl phenyl) phosphine oxide, 4-methyl-5-vinyl thiazole, 1-allyl-3-methyl imidazole chloride, 3-(1, 1-difluoro-2-propylene-1-yl)-2 (1H)-quinoxalinone, and 1, 3-bis (oxiranyl methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone. The yarn is good in anti-ultraviolet performance, flame retardant performance and antibacterial performance.

The invention provides a composite extraction agent and application thereof in separation and recovery of lithium from lithium precipitation mother liquor. Relates to the technical field of composite extraction. The composite extraction agent comprises an extraction agent, a synergistic extraction agent and a diluent, the extraction agent comprises one or more of 1, 3-bis (4-fluorophenyl)-1, 3-propanedione, 2, 2-difluoro-1, 3-diphenyl-1, 3-propanedione, 1-phenyl-3-isoheptyl-1, 3-propanedione and benzoyl trifluoroacetone, and the diluent comprises one or more of 1, 3-bis (4-fluorophenyl)-1, 3-propanedione, 2, 2-difluoro-1, 3-diphenyl-1, 3-propanedione, 2, 2-difluoro-1, 3-diphenyl-1, 3-propanedione, 1-phenyl-3-isoheptyl-1, 3-propanedione and benzoyl trifluoroacetone. The synergistic extraction agent is prepared from one or more of tributyl phosphate, triisobutyl phosphate, triamyl phosphate, tributyl phosphine oxide and bis (4-fluorophenyl) phosphine oxide; the diluent comprises one or more of kerosene, sulfonated kerosene, tetradecane and tetradecanol. The composite extraction agent adopted by the invention has low requirement on pH, better acid and alkali resistance stability, small solution loss and good selective effect on lithium, the lithium recovery cost is reduced, and the comprehensive lithium extraction efficiency can reach 97.0% or above.

The invention provides a method for recovering rhodium in organic residual liquid containing triphenylphosphine / phosphine oxide, and relates to the technical field of precious metal recovery, and the method comprises the following steps: S1, carrying out reduced pressure rectification on the organic residual liquid containing triphenylphosphine / phosphine oxide to remove volatile components until the indexes of the residual liquid meet the feeding requirements of a subsequent process, and collecting light components for independent storage; s2, adding an acidic medium into the organic phase after light component removal, stirring and heating, introducing an oxidizing agent to carry out oxidation-complexation reaction, maintaining reaction conditions until the reaction is complete, standing for phase splitting, and collecting a water phase containing rhodium complex ions; according to the method, a core process combining oxidation-chlorination transfer and anion exchange adsorption is adopted, and key parameters of each process are accurately controlled, so that the rhodium recovery rate is stabilized at 95% or above, the rhodium content in the residual liquid can be reduced to 5 ppm or below, the industrial emission standard is completely met, and compared with the prior art, the resource recovery efficiency is greatly improved, and the cost is reduced. And waste of precious metal resources is effectively reduced.

The invention provides a low-modulus and high-adhesion UV adhesive and a preparation method and application thereof.The low-modulus and high-adhesion UV adhesive is prepared from polycarbonate type polyurethane acrylate resin, N, N-dimethylacrylamide, hydroxyethyl acrylate, tripropylene glycol diacrylate, ethyoxyl ethyoxyl ethyl acrylate, vinyl chloride and vinyl acetate copolymer resin, bis (2, 4, 6-trimethyl-1, 3-pentanediol) (2, 4, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3-pentanediol The coating is prepared from the following raw materials: 4-(2, 6-trimethylbenzoyl) phenyl phosphine oxide, 2-hydroxy-2-methyl-1-phenyl-1-[4-(2-hydroxyethoxy) phenyl] acetone, TPO (Thermoplastic Polyolefin), vinyl triethoxy silane, vinyl trimethoxy silane, a diluent and a de-foaming agent. The adhesive provided by the invention can be used for welding spot protection, prism fixation, glass and plastic bonding, structural member bonding and the like. Due to the low modulus, stress can be released during welding spot protection and structural part bonding, and the phenomena of cracking, layering and the like caused by stress residues are avoided, and functional failure of a product is avoided; and due to high adhesion, the product can be better protected, and the product has the characteristics of high vibration resistance, impact resistance, high and low temperature resistance and the like.

The invention discloses an anti-aging cable for photovoltaic power generation and a preparation method thereof, and relates to the technical field of cables. The anti-aging cable for photovoltaic power generation prepared by the invention comprises a conductor and a protective layer, the protective layer comprises modified polyethylene, modified silicon dioxide and phenylamino-terminated silicone oil, and the modified polyethylene is obtained by grafting polyethylene with N, N-dimethyl-3-buteneamine and then reacting with 3-(tert-butyl)-5-(chloromethyl)-2-hydroxybenzaldehyde; the modified silicon dioxide is obtained by grafting pretreated silicon dioxide with stilbene phosphine oxide and then carrying out formylation; and finally, uniformly mixing and extruding the modified polyethylene, the modified silicon dioxide and the phenylamino-terminated silicon oil to obtain the protective layer. The anti-aging cable for photovoltaic power generation prepared by the invention has good flame retardance, mechanical property and anti-aging property.