87results about How to "Inhibitory reactivity" patented technology

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention discloses a sorghum aphid MsCYP1 gene as well as an encoding protein, dsRNA (double-stranded ribonucleic acid) and application thereof, and aims to solve the technical problem that a key gene is lacked when an RNA (ribonucleic acid) interference technology is used for biological prevention and control of sorghum aphids at present. According to the application, the sorghum aphid protein MsCYP1 capable of being secreted into sorghum cells is screened, and the protein and the coding gene thereof can inhibit the content of hydrogen peroxide in sorghum and the immune response of the sorghum. Meanwhile, according to the cDNA sequence of the MsCYP1 gene of the sorghum aphid, dsRNA for the gene is designed, the dsRNA is introduced into the body of the sorghum aphid in an artificial feeding mode, it is found that the dsRNA can remarkably inhibit the MsCYP1 gene of the sorghum aphid, then the honeydew secretion amount and the reproduction rate of the sorghum aphid are affected, the MsCYP1 gene can serve as an RNAi target gene to be used for aphid prevention and control, pesticide use is reduced, and the application prospect is good. The ecological balance is maintained.

The invention relates to the technical field of heat-resistant materials, in particular to a heat-resistant polyethylene material and a preparation method thereof, and the heat-resistant polyethylene material comprises the following raw materials: ultra-high molecular weight polyethylene, zirconium oxide-zinc aluminate spinel (ZrO2-ZnAl2O4), modified graphdiyne, an antioxidant, a heat stabilizer, a plasticizer, a flame retardant and an anti-ultraviolet agent. The ultrahigh molecular weight polyethylene, the ZrO2-ZnAl2O4 and the modified graphdiyne play a role through a synergistic effect, a polyethylene molecular chain forms a firm three-dimensional network structure in a high-temperature radiation process, and a stable matrix supporting effect is provided; the excellent chemical stability and oxidation resistance of ZrO2-ZnAl2O4 in a high-temperature environment effectively inhibit the thermal degradation reaction of polyethylene, the service life of the material is prolonged, the modified graphdiyne is beneficial to rapid heat transmission, the thermal stability of the material is improved, meanwhile, the layered structure of the material has good lubricating performance, and the service life of the material is prolonged. The modified graphdiyne and the ZrO2-ZnAl2O4 are combined to avoid heat accumulation and material aging caused by the friction effect, and the ultrahigh molecular weight crosslinked polyethylene, the ZrO2-ZnAl2O4 and the modified graphdiyne form a multi-layer protection system to jointly improve the heat stability of the material.

The invention relates to the technical field of hydrophobic flame-retardant materials, and discloses a method for preparing a super-hydrophobic flame-retardant flexible material from a water-dispersed nanocellulose compound, which comprises the following steps: preparing a nanocellulose suspension; synthesizing silicon dioxide nanoparticles; preparation of a precursor suspension: mixing SiO2 nanoparticles, methyltrimethoxysilane and the nanocellulose suspension in proportion, and carrying out a reaction to obtain the precursor suspension; preparing a polyvinyl alcohol solution; preparing a water-dispersible plant nano cellulose compound mixed solution, and freezing the water-dispersible plant nano cellulose compound mixed solution; and carrying out freeze drying treatment and heat treatment on the frozen material to obtain the super-hydrophobic flame-retardant flexible material. According to the method for preparing the super-hydrophobic flame-retardant flexible material by adopting the water dispersible nano-cellulose compound, the material preparation process is green and pollution-free, and the prepared flexible material has the characteristics of high elasticity, high oil absorbency, reusability, fire resistance, degradability and the like, and can be applied to various fields.

The invention provides a preparation method of a diaphragm-free all-solid-state battery, and belongs to the technical field of solid-state batteries, and the preparation method comprises the following steps: S1, coating the surface of a positive current collector with positive slurry to obtain a positive plate; s2, coating the surface of the positive plate with acting slurry to form an acting layer; the acting slurry comprises the following components in percentage by mass: 15-18% of lithium niobate, 5-6% of nano aluminum oxide, 3-5% of a binder and the balance of a solvent; s3, coating the surface of the acting layer with electrolyte slurry to form a semi-solid electrolyte; the electrolyte slurry comprises the following components in percentage by mass: 5-7% of porous carbon coated alumina particles, 7-9% of a binder and the balance of electrolyte; s4, the surface of the semi-solid electrolyte is coated with negative electrode slurry, then a negative current collector is added, the surface is pressurized by 450-650 N / m < 2 >, heating treatment is conducted for 12-15 h at the temperature of 80-100 DEG C in an inert environment, and a battery cell body is obtained; and S5, packaging, compacting and sealing the battery core body to obtain the diaphragm-free all-solid-state battery. According to the invention, the cycle life of the prepared diaphragm-free all-solid-state battery can be prolonged.

The invention discloses a straw powder filled biodegradable composite material and a preparation method thereof, and relates to the technical field of biodegradable composite materials, the preparation method of the biodegradable composite material comprises the following steps: S1, pretreating straw; s2, impurities are removed through winnowing; s3, removing magnetic impurities; s4, cleaning and drying; s5, performing high-pressure steam treatment; s6, drying in the oven and crushing again; s7, adding into a high-speed mixer and mixing; s8, extruding the biodegradable composite material, and cooling and shaping the biodegradable composite material; and S9, cutting and polishing are conducted, and performance testing is conducted. The biodegradable composite material is prepared from agricultural waste, waste accumulation is reduced, sustainable development is promoted, the straw powder filled biodegradable composite material has biodegradability, high strength and good processability, and the straw powder filled biodegradable composite material is suitable for large-scale production. The problems of reducing agricultural wastes, enhancing mechanical properties and environmental protection performance, improving processability and reducing raw material cost can be solved.

The invention relates to application of chenodeoxycholic acid or pharmaceutically acceptable salt thereof in preparation of a medicine for treating acne. The chenodeoxycholic acid disclosed by the invention can be a natural organic compound or a synthetic organic compound, has relatively strong propionibacterium acnes inhibitory activity and a pharmacodynamic effect of resisting lipid secretion, and is used as an active component to be prepared into a pharmaceutical composition for treating acnes together with a pharmaceutically acceptable carrier.

The present application belongs to the technical field of biological oil catalytic hydrogenation, and particularly relates to a bio-based oil-soluble molybdenum catalyst, a preparation method and application thereof. The preparation method of the bio-based oil-soluble molybdenum catalyst provided by the present application comprises: mixing a molybdenum source, a bio-based linear organic acid with a carbon atom number of 16 or more and an additive, heating and reacting, and separating to obtain the bio-based oil-soluble molybdenum catalyst; the additive is selected from at least one of tetrahydro naphthalene and decahydro naphthalene. The bio-based oil-soluble molybdenum catalyst green material obtained by the present application has optimal activity and high dispersibility when used, can realize more sufficient mixing with raw materials, forms nano high-dispersed molybdenum sulfide through sulfuration, and realizes high-efficiency hydrogenation refining of oil products through the joint action of hydrogen and sulfur, while reducing the sulfur, oxygen and metal residues in the product oil.

The application discloses a preparation method of a sodium ion battery hard carbon negative electrode material based on step-by-step synergistic regulation, and comprises the following steps: S1, biomass pretreatment; S2, low-temperature pre-carbonization to obtain biomass pre-carbonized carbon; S3, physical activation: the pre-carbonized carbon is placed in an activation atmosphere to perform medium-temperature activation, and biomass activated carbon is obtained; S4, high-temperature carbonization: the biomass activated carbon is placed in an inert atmosphere to perform high-temperature carbonization, and a hard carbon intermediate is obtained; S5, chemical vapor deposition coating: the hard carbon intermediate is placed in a mixed atmosphere of a coating carbon source and an inert gas to perform chemical vapor deposition coating, and a surface-coated biomass hard carbon negative electrode material is obtained. The application can realize a higher closed pore volume at a milder temperature, and the synergistic regulation pore forming mode of activating and forming pores first and then high-temperature closing pores also avoids the insufficient closed pores caused by single high-temperature treatment.

The application provides a preparation method of a diphenylfluorene polyether. The method uses diphenylfluorene as a substrate, butylene oxide as an epoxide monomer, toluene as an organic solvent, and under the action of a composite catalyst, reacts at 110-200 DEG C for 2-6 hours to obtain the diphenylfluorene polyether. The composite catalyst is obtained by reacting a porous aromatic skeleton with a bromoalkyl quaternary ammonium salt to obtain a quaternary ammonium salt functionalized porous aromatic skeleton, and finally, a basic catalyst is limitedly encapsulated in the pore channel of the quaternary ammonium salt functionalized porous aromatic skeleton by electrostatic attraction. The catalyst of the method can be recycled and reused, and the yield retention rate is greater than or equal to 92% after the composite catalyst is used for 5 cycles, and the method is suitable for optical display, high-frequency circuit board, semiconductor packaging and other fields.

The invention provides a lignin ionic liquid composite material as well as a preparation method and application thereof. The lignin ionic liquid composite material is applied to the field of metal corrosion prevention. The preparation method of the composite material comprises the following steps: reacting benzotriazole with tetrabutylphosphorus hydroxide to obtain an ionic liquid, and dissolving lignin in the ionic liquid in a heating and stirring state to obtain the lignin ionic liquid composite material. Wherein the mass fraction of the lignin is 1-5% of the total mass of the lignin ionic liquid composite material. The lignin ionic liquid composite material provided by the invention is used as a corrosion inhibitor, and through the synergistic effect of lignin and ionic liquid, the stability and compactness of the composite material on a metal surface adsorption film are improved, so that the corrosion of metal is reduced.

The application relates to the technical field of batteries, in particular to a positive electrode material, a preparation method thereof, a positive electrode sheet and a battery. The positive electrode material comprises: an inner core, wherein the inner core comprises a high-nickel ternary positive electrode material; a first coating layer coated on the surface of the inner core, wherein the first coating layer comprises an oxide of cobalt, an oxide of titanium and an oxide of aluminum; and a second coating layer coated on the surface of the first coating layer, wherein the second coating layer comprises an oxide of selenium; wherein the surface of the high-nickel ternary positive electrode material is treated by an organic acid. The technical scheme can reduce the residual alkali on the surface of the material, effectively improve the structural stability and interface stability of the material in the long-term cycle process, and thus realize excellent cycle life and capacity retention rate.

The present application relates to a kind of in situ low-temperature confined carbonization construction carbon dot enrichment coating layer manganese-based positive electrode material and its preparation method, by accurately coordinating the evolution condition of carbon point carbon source in the mixing system environment of coating process, freezing condition and sublimation and carbonization, realize the whole process synergistic control of carbon point carbon source spatial distribution, ice crystal template state, skeleton construction of controlled conversion of carbon point carbon source and harmful residue removal on the surface of manganese-based positive electrode material, successfully constructed the carbon dot enrichment coating layer of size controllable, density adjustable, ion permeability good and interface combination firm on the surface of manganese-based positive electrode material, to realize the synergistic promotion of manganese-based positive electrode material cycle performance, rate performance and interface stability.

The application provides a method for inducing poly-podophylli rhizoma by using clump buds, comprising the following steps: S1, cutting stem segments from a podophylli rhizoma mother plant, soaking and cleaning to obtain explants; S2, disinfecting and cleaning the explants, inoculating into a clump bud induction medium to obtain podophylli rhizoma clump buds; S3, inoculating the clump buds into doubling liquid I, washing with a liquid clump bud induction medium after culture, and then transferring into doubling liquid II; S4, taking out the clump buds, cleaning, inoculating into a clump bud induction medium, and then inoculating into a bud proliferation medium; S5, waiting until 1-2 cm, screening out potential mutant strains through phenotypes, inoculating into the bud proliferation medium for subculture, and obtaining mutant plants; and S6, rooting culture of the mutant plants, and after root systems grow, planting and raising seedlings, and then poly-podophylli rhizoma plants are obtained. In the research, suitable concentration of colchicine is used for induction treatment twice, and through stage concentration switching and intermittent recovery strategies, the poly-ploid induction efficiency and explant survival are effectively considered.

The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.

The rapid cooling and filling equipment for sauce production comprises a support, a barrel, an outer pipe, a cooling pipe and a sleeve, the support is provided with a platform used for bearing a bottle body, a transverse plate is arranged in an inner cavity of the barrel, an inner pipe is arranged in the center of the transverse plate in a penetrating mode, the inner pipe is connected with a filling needle nozzle extending out of the inner cavity of the barrel, and the filling needle nozzle is provided with a first switch; the outer pipe is located outside the barrel, the top end of the outer pipe is connected with the sauce conveying pipe, the bottom end of the outer pipe is connected with the inner pipe, the cooling pipe covers the outer pipe, the cooling pipe is provided with an inlet and a discharge port and used for introducing a cooling agent, and the cooling pipe is provided with a second switch; the sleeve body is movably arranged on the cylinder body in a sleeving mode, the sleeve body conducts centering action and releasing action on the multiple sets of clamping jaws, the centering action drives the multiple sets of clamping jaws to tighten inwards to clamp a bottle opening or a bottle neck of a bottle body, the bottle opening of the bottle body cannot deflect relative to a filling needle nozzle, and sauce cannot leak out in the subsequent filling process. And waste and pollution to the bottle body and equipment are avoided, and the use is convenient.

This application relates to the field of battery structure, and in particular to a thermal runaway protection device and a battery. The thermal runaway protection device includes a flame-retardant shell, extinguishing gas, and multiple extinguishing bags; each extinguishing bag includes a filling bag and extinguishing material; the extinguishing material is placed inside the filling bag, which ruptures at a first preset temperature; the flame-retardant shell has a receiving cavity, and multiple extinguishing bags are spaced apart within the receiving cavity, which is filled with extinguishing gas; the flame-retardant shell ruptures at a second preset temperature, where the first preset temperature is greater than or equal to the second preset temperature. The thermal runaway protection device provided by this application, by placing extinguishing bags and extinguishing gas inside the flame-retardant shell, allows the high temperature to rupture the flame-retardant shell when thermal runaway occurs, releasing the extinguishing gas from the receiving cavity into the battery pack for oxygen removal and isolation. Simultaneously, the filling bag of the extinguishing bag ruptures due to heat, releasing the extinguishing material, which forms foam or dry powder to cover the surface of the fire source, inhibiting the occurrence and development of combustion.

The invention discloses a ternary material precursor, a ternary material and a preparation method, and belongs to the field of lithium ion battery positive electrode materials. The ternary material precursor is of a multi-layer composite structure and sequentially comprises a core layer, a first transition layer and a second transition layer from inside to outside, and all the layers are prepared by adopting the same ternary (nickel-cobalt-aluminum) system. Through reasonable design of the proportion and thickness of the ternary system of the core layer and the transition layer, the ternary material precursor gives consideration to the high-capacity characteristic of the high-nickel core and the stability of the shell, and the stable structure of the shell can effectively inhibit the structural change and interface side reaction of the high-nickel material in the charging and discharging process. The phenomena of particle cracking and shell layer falling are reduced, and the material shows excellent specific discharge capacity, good cycle performance and thermal stability when being used as a lithium ion battery positive electrode material.

The invention discloses a traditional Chinese medicine monomer composition derived from chrysanthemum plants and used for treating diabetic retinopathy as well as a preparation method and application of the traditional Chinese medicine monomer composition. The traditional Chinese medicine monomer composition prepared from the chrysanthemum plant as the raw material is high in safety, small in side effect and definite in component and is prepared according to a specific ratio, and pharmacodynamic experiments prove that compared with an ethanol extract, the traditional Chinese medicine monomer composition is more remarkable in curative effect on diabetic retinopathy, and the curative effect of the traditional Chinese medicine monomer composition on diabetic retinopathy is better than that of a traditional Chinese medicine composition on diabetic retinopathy. The composition can improve the pathological state of diabetic retinopathy from multiple targets and multiple ways, specifically can inhibit body mass increase caused by high glucose, reduce blood glucose level, improve retinal tissue structure damage, recover retinal tissue thickness, inhibit retinal cell apoptosis and inflammatory response, reduce the expression level of HIF-1alpha and VEGF protein in retinal tissue, and can be used for treating diabetic retinopathy. Scientific basis and technical support are provided for research and development of novel drugs for treating the diabetic retinopathy, and important clinical significance and market application prospects are achieved.

The invention belongs to the technical field of biological fermentation, and provides a microbial fermentation efficient extraction process and device, and the process comprises the following steps: step 1) continuous disinfection; the method comprises the steps of (1) fermentation, (2) fermentation culture, (3) cross-tank conveying, (4) temperature control and high-pressure recovery, (5) split-flow extraction and purification and (6) refining and drying, the quality of fermentation liquor is improved through a fermentation process precise control technology and a new fermentation technological process, and the product yield is improved through an efficient extraction technology.

The invention relates to the technical field of alkenyl succinic anhydride synthesis, in particular to a continuous synthesis process and device for alkenyl succinic anhydride, and the continuous synthesis process at least comprises the following steps: filling a fixed bed reactor with an immobilized AlCl3 catalyst; a mixed material obtained after preheating of maleic anhydride and internal olefin enters a fixed bed reactor, the mixed material makes contact with an immobilized AlCl3 catalyst and is subjected to a catalytic reaction to synthesize a crude product, the crude product is cooled, olefin is separated and recycled through distillation, and the alkenyl succinic anhydride product is obtained after filtration. Compared with a traditional production technology, continuous production is achieved, the technological process is simple, safety is higher, and the production cost is low. Meanwhile, the energy consumption and the equipment investment cost are effectively reduced, and large-scale industrial application production is easy to realize.

The invention discloses a graded regulation and control electrolyte for improving the low-temperature performance of a lithium iron phosphate-based lithium ion battery and a preparation method of the graded regulation and control electrolyte, and belongs to the technical field of lithium ion batteries. The electrolyte is prepared from the following components in percentage by mass: 70 to 90 percent of solvent system, 10 to 25 percent of lithium salt and 0.5 to 2 percent of functional additive, a solvent system comprises fluoroethylene carbonate as an inner shell layer, low-melting-point carboxylic ester as a middle layer and a mixture of two chain carbonates as a base layer. According to the electrolyte, the capacity retention ratio of the LFP battery at-30 DEG C is remarkably improved, the polarization voltage is reduced, the cycling stability is improved through graded regulation and control of a solvation structure, and the electrolyte is simple in preparation process and suitable for large-scale production.

A gas-liquid separation device and method for industrial production of carbon dioxide reduction by electrolysis. The device includes a gas-liquid mixture inlet / outlet control unit, a heat exchange and cooling unit, and a gas-liquid mixture separation and sludge discharge unit. The gas-liquid mixture inlet / outlet control unit receives the gas-liquid mixture from the electrolysis reaction system and enables its directional flow. The heat exchange and cooling unit provides a heat exchange interface to absorb heat from the gas-liquid mixture flowing through its path, cooling the mixture from its initial reaction temperature to a preset temperature. The gas-liquid mixture separation and sludge discharge unit utilizes the density difference between the gas and liquid phases and gravity in the cooled mixture to cause the gas phase component to rise and be discharged, while the liquid phase component settles and accumulates at the bottom of the unit, thus achieving gas-liquid separation. The device is small in size and has standardized interfaces, facilitating direct coupling with large electrolytic cells.

The application belongs to the technical field of fluorine-containing fine chemical synthesis, and particularly relates to a preparation method of 2-bromoheptafluoropropane. Liquid heptafluoropropane and liquid bromine are heated and vaporized, sent into a static mixer, mixed, and then sent into a tubular reactor for bromination reaction. The reactor comprises a preheating section and four reaction sections connected in sequence. The temperature of the preheating section is controlled to be 300-350 DEG C. According to the material flow direction, the center temperatures of the four reaction sections are controlled to be 500-505 DEG C, 500-505 DEG C, 495-500 DEG C and 490-495 DEG C in sequence. The mixed gas after reaction is sent into a quenching device for cooling, and then subjected to defluorination, water washing, alkali washing, dehydration and condensation separation to obtain high-purity 2-bromoheptafluoropropane. The application integrates full-silicon material containers, multi-section intelligent partition heating and rapid quenching, significantly improves reaction conversion rate and operation stability, and finally improves product quality and reduces production cost.

The application discloses a method for preparing polyethylene wax by using a carborane bridged rare earth metallocene catalyst, and simultaneously preparing a carborane bridged indenyl rare earth metallocene compound as a main catalyst, loading the prepared main catalyst and a cocatalyst on a magnetic mesoporous Fe3O4@Al2O3 core-shell nanoparticle carrier to obtain a supported rare earth metallocene catalyst; the main catalyst of the application is a carborane bridged indenyl rare earth metallocene compound with a structure shown in formula (I), wherein a bridging group adopts a closed carborane (closed-1,2-dicarbadodecaborane), and the cage-like three-dimensional structure has super-high thermal stability and chemical inertness and does not degrade or rearrange in a high-temperature molten state of 130-200 DEG C. Large-volume substituents such as methyl, tert-butyl, phenyl or 4-tert-butylphenyl are introduced on the indene ring to provide sufficient steric protection and further inhibit chain transfer and side reactions at high temperatures.

The invention provides a lactobacillus fermentation extraction method of marine red algae polysaccharide and application of the marine red algae polysaccharide, and the method comprises the following steps: mixing marine red algae powder with water, and carrying out pasteurization at 60-70 DEG C for 20-40 minutes; adding lactobacillus plantarum into the sterilized marine red algae turbid liquid, and performing fermentation culture to obtain a marine red algae fermentation mixed liquid; heating and extracting the marine red algae fermentation mixed solution at 85-95 DEG C for 1.5-2.5 hours, centrifuging, collecting supernate, carrying out rotary evaporation and concentration to 1 / 5 of the original volume, then adding ethanol, standing overnight, discarding the supernate, adding distilled water into precipitate for redissolving, and deproteinizing by using a Sevag method to obtain a polysaccharide solution; and dialyzing the polysaccharide solution, and concentrating and freeze-drying the dialysate to obtain the marine red algae polysaccharide. According to the method, the low-molecular-weight modified polysaccharide is obtained through lactobacillus plantarum fermentation, extraction and purification, and the low-molecular-weight modified polysaccharide is high in sulfate group content, loose in structure, capable of remarkably inhibiting AGEs-induced intestinal cell oxidative stress and inflammatory reaction, capable of being used for preparing the glycosylation injury resisting medicine and good in industrialization prospect.

The invention relates to the technical field of high-activity metal powder, in particular to high-environmental-stability aluminum-lithium alloy powder and a manufacturing method and application thereof.The high-environmental-stability aluminum-lithium alloy powder comprises, by weight, 1.0-10.0 wt.% of Li, 1.0-10.0 wt.% of Al, 1.0-10.0 wt.% of Ti, 1.0-10.0 wt.% of Ti, 1.0-10.0 wt.% of Ti, 1.0- 0.1 to 5.0 wt.% of Zr; 0.01 to 2.0 wt.% of Ti; 0.05 to 3.0 wt.% of RE; wherein RE is a rare earth element and at least comprises Y, Ce, La or a combination thereof, the sum of Zr, Ti and RE does not exceed 8.0 wt.%, and the balance is Al and inevitable impurities. The method has the effect of improving the use stability and the machining consistency of the aluminum-lithium alloy powder.

The invention relates to the technical field of PETG polyester materials, and particularly discloses an impact-resistant modified PETG polyester material and a preparation method thereof, and the impact-resistant modified PETG polyester material comprises the following components: 50-80 parts of PETG resin, 10-30 parts of an impact-resistant modifier, 5-15 parts of a wear-resistant reinforcing agent, 1-5 parts of a stabilizer, 1-3 parts of a lubricant, 2-8 parts of a corrosion-resistant additive, and 1-3 parts of an antioxidant. The impact modifier is formed by compounding a methyl methacrylate-butadiene-styrene copolymer, an acrylonitrile-butadiene-styrene copolymer and an ethylene-octene copolymer according to a compounding ratio of 1: 1: 3, and the wear-resistant enhancer is formed by compounding ultra-high molecular weight polyethylene micro powder, nano ceramic particles and polytetrafluoroethylene micro powder. The compounding ratio range is 1: 1: 2. According to the impact-resistant modified PETG polyester material and the preparation method thereof, the impact-resistant modified PETG polyester material has relatively good impact resistance, wear resistance, corrosion resistance and oxidation resistance.

The invention relates to the technical field of new energy batteries, in particular to a sodium-ion battery positive electrode additive and a preparation method thereof, a sodium-ion battery positive electrode material, a sodium-ion battery positive electrode plate and a sodium-ion battery. The preparation method of the sodium ion battery positive electrode additive comprises the following steps: S1, grinding and mixing a sodium source, a lanthanum source, a chlorine source and a fluorine source in an inert atmosphere according to a stoichiometric ratio; wherein a is a lanthanide rare earth element; and S2, calcining the powder obtained in the step S1 for 6-24 hours at 250-450 DEG C under a sealed condition, naturally cooling, and crushing to obtain the sodium ion battery positive electrode additive. A sodium-rich anti-perovskite material with high ionic conductivity is prepared through a solid-phase melting method, high-valence lanthanum and halogen fluorine are introduced for doping, an oxygen-vacancy-rich structure is obtained through an interface ion exchange reaction after annealing heat treatment, sodium-oxygen octahedron distortion in a crystal is caused, and the performance of the material is improved. The stability and the ion migration rate of the material are effectively improved.

This invention discloses a high-performance polymer electrolyte based on a functionalized fluorinated ether diluent and its preparation method, relating to the field of electrochemical energy storage materials technology. The high-performance polymer electrolyte comprises: a polymer matrix, a lithium salt, an organic dispersion solvent, and a functionalized fluorinated ether diluent. By introducing a fluorinated ether diluent with a specific structure, this invention synergistically regulates the crystallization behavior of the polymer matrix and the lithium-ion solvation structure, solving core problems in traditional polymer electrolytes such as low ionic conductivity, poor interfacial stability, and lithium dendrite growth. The resulting electrolyte possesses high ionic conductivity, high lithium-ion transference number, and excellent interfacial stability, making it suitable for high-energy-density lithium metal batteries.