38results about How to "Uniform performance" patented technology

The embodiment of the invention is suitable for the technical field of artificial intelligence, and provides a re-calculation training strategy generation method, electronic equipment and a computer program.The method is applied to a heterogeneous cluster and comprises the steps that cluster information of the heterogeneous cluster and model feature information of a to-be-trained model are determined; for each storage and calculation resource in the heterogeneous cluster, according to the cluster information and the model feature information, re-calculation time information and re-calculation performance requirements are determined; determining a re-calculation time information characteristic value under the condition that the re-calculation performance demand is not greater than the performance limit value of the storage and calculation resources; and determining a recalculation training strategy for the to-be-trained model according to the recalculation time information feature value corresponding to each storage and calculation resource. According to the embodiment of the invention, the adaptive re-calculation training strategy can be determined for each storage and calculation resource of the heterogeneous cluster, and the model training efficiency and throughput are improved by adopting the re-calculation training strategy corresponding to each storage and calculation resource to carry out model training.

The invention relates to the technical field of PVB heat-insulating films, in particular to a PVB heat-insulating film based on indium tin oxide and bronze cesium tungsten compounding and a preparation method thereof.The PVB heat-insulating film is prepared from, by weight, 80-120 parts of PVB resin, 20-50 parts of oily plasticizer, 0.1-2.0 parts of silane coupling agent, 0.1-1.0 part of antioxidant, 0.1-1.0 part of ultraviolet light absorber, 1-5 parts of polyethylene glycol derivative and 1-5 parts of compound dispersion slurry, the weight ratio of the indium tin oxide powder to the bronze cesium tungsten powder in the compound dispersed slurry is (5: 5)-(7: 3). According to the PVB heat-insulating film based on indium tin oxide and cesium tungsten bronze compounding and the preparation method, the prepared PVB heat-insulating film has high visible light transmittance and excellent near-infrared light rejection rate, meanwhile, the Faraday cage effect can be effectively avoided, and the signal shielding problem is avoided.

This application relates to the field of organosilicon polymer materials, specifically disclosing a method for preparing and applying a functionalized MQ silicone resin. A method for preparing a functionalized MQ silicone resin includes the following steps: (1) raw material pretreatment; (2) simultaneous addition reaction: mixing and reacting a hydrogen-containing MQ silicone resin, a terminal olefin monomer containing a benzocyclobutene functional group, and a terminal olefin monomer containing a C-F bond; (3) post-treatment to obtain the functionalized MQ silicone resin; wherein the molar ratio of Si-H bonds in the hydrogen-containing MQ silicone resin, C=C bonds in the terminal olefin monomer containing a benzocyclobutene functional group, and C=C bonds in the terminal olefin monomer containing a C-F bond is 1:(0.2-0.6):(0.1-0.4). This application enables the synergistic effect of the rigid benzocyclobutene group and the fluorinated flexible segment, one-step grafting, and structural controllability, ultimately preparing a functionalized MQ silicone resin with excellent dielectric properties, high temperature resistance, low-temperature flexibility, good hydrophobicity, and excellent mechanical strength.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

The invention discloses a multi-dialect large model adaptation method and system oriented to a Gluggin language, and the method comprises the steps: obtaining corpus data and model constraint information of each Gluggin dialect region, building a dialect mapping matrix, and positioning key semantic difference points; characterization offset features are extracted, contrast training sample pairs are constructed, and vector space analysis is implemented to determine a priority adjustment layer; identifying dialect difference features in the model constraint information to generate layered coding parameters, generating a layered representation structure through collaborative matching of a priority adjustment layer and the layered coding parameters, and determining a weight adjustment boundary; determining a parameter distribution density by combining a weight adjustment boundary and a priority coefficient, generating an optimal migration weight, extracting a negative migration node, converting the negative migration node into a dialect boundary mark, and constructing a gradient propagation path; and detecting the confusion expression set, generating representation decoupling configuration, executing progressive collaborative optimization based on the representation decoupling configuration and the gradient propagation path to output a multi-dialect adaptation scheme, and realizing accurate adaptation and collaborative optimization of the multi-dialect of the Gu-language family.

The embodiment of the application is suitable for the field of artificial intelligence technology, and provides a re-computation training strategy generation method, an electronic device and a computer program. The method is applied to a heterogeneous cluster, and includes: determining cluster information of the heterogeneous cluster and model feature information of a to-be-trained model; determining re-computation time information and re-computation performance requirements of each storage-computing resource in the heterogeneous cluster according to the cluster information and the model feature information; determining a re-computation time information characteristic value in a case where the re-computation performance requirements are not greater than a performance limit value of the storage-computing resource; and determining a re-computation training strategy for the to-be-trained model according to the re-computation time information characteristic value corresponding to each storage-computing resource. The embodiment of the application can determine an adaptive re-computation training strategy for each storage-computing resource of the heterogeneous cluster, and improve the model training efficiency and throughput by using the re-computation training strategy corresponding to each storage-computing resource for model training.

This invention discloses a flame-retardant sealant for battery cell lead terminals and its preparation method, relating to the field of adhesive technology. The flame-retardant sealant for battery cell lead terminals, by weight, comprises the following raw material components: 30-50 parts base adhesive, 20-40 parts composite flame retardant, 5-15 parts curing agent, 1-3 parts silane coupling agent, 3-8 parts toughening agent, and 1-5 parts thixotropic agent; the composite flame retardant is a mixture of aluminum hydroxide and an organophosphorus flame retardant, with a weight ratio of 0.2:1.5. This sealant synergistically improves flame retardancy and environmental friendliness. Through the precise formulation of the inorganic-organic composite flame retardant, it avoids the problems of traditional single flame retardants requiring large amounts or easily decomposing and producing toxins at high temperatures, ensuring both high flame retardancy and environmental friendliness.

The invention discloses a temperature-cooling rolling process for a high-strength non-magnetic small bar with the diameter being 20-30 mm. The temperature-cooling rolling process aims at solving the problems that steel is low in tensile strength and yield strength, high in rolling temperature rise, large in rolling resistance, large in product performance difference, deteriorated in performance, long in machining period and the like. According to the specific technical scheme, (1) an original steel ingot is obtained through electric furnace smelting and external refining (AD + LF); heating the steel ingot by using a walking beam furnace; (2) carrying out high-temperature rolling cogging by a reversible cogging mill; (3) temperature-controlled rolling: (1) rough rolling; (2) cooling; (3) intermediate rolling; and (4) finish rolling. The method has the advantages that due to the design of a rolling process, namely four rough rolling, six intermediate rolling, four finish rolling and a cooling process after rough rolling, the obtained product has the characteristics of high strength, high toughness, uniform performance and the like on the basis of no magnetism.

This application relates to a path planning method, apparatus, device, and storage medium for arc additive manufacturing. The path planning method includes: determining the number of welding layers in the arc additive manufacturing process; and determining the arc initiation point and welding direction of each welding layer based on the number of welding layers, wherein the arc initiation point and welding direction of each welding layer are different from those of the previous welding layer. This application enables additively manufactured structures to exhibit more uniform performance in different directions and can also avoid inter-pass defects.

The invention discloses an ultrathin heat-resistant polyester film and a preparation method thereof, raw materials comprise a polyester matrix, an antioxidant, a lubricant and the like, the polyester matrix is formed by compounding PET, PEN, polyester liquid crystals and hydroxyl-terminated hyperbranched polyester, and a nanofiller is an aluminum oxide, zirconium oxide and boron nitride compounded system and is matched with calix [4] pyrrole, polyhedral oligomeric silsesquioxane and other components. The preparation method comprises the steps of mixing, twin-screw extrusion and filtration, die head extrusion and cooling, two-way stretching, corona treatment and rolling, and extrusion, stretching and shaping process parameters are controlled. The thickness of the thin film is 5-8 microns, the thin film has excellent tensile strength, low thermal shrinkage rate and high-low temperature cycle resistance, the synergistic effect of the components is remarkable, and the thin film is suitable for high-end ultrathin heat-resistant scenes.

The invention discloses a degreasing method of a silicon nitride ceramic substrate, which belongs to the field of advanced ceramic preparation, and comprises the following steps: in a silicon nitride green body pre-degassing stage, heating to 140-160 DEG C; in the silicon nitride green body pre-decomposition stage, the temperature is increased to 230-270 DEG C, and N2 is added; in the oxygenolysis and catalytic chain scission stage of the silicon nitride green body, the temperature is raised to 350-400 DEG C, and the volume ratio of N2 to O2 is 97: 3-90: 10; in the inert purification and structure relaxation stage of the silicon nitride green body, the temperature is increased to 450-600 DEG C, and N2 is added; in a silicon nitride green body cooling stage, cooling to 180-220 DEG C, and adding N2; the temperature rise rate gt of the silicon nitride green body inert purification and structure relaxation stage; the heating rate gt of the silicon nitride green body in the pre-decomposition stage; the temperature rise rate gt of the oxygenolysis and catalytic chain scission stage of the silicon nitride green body; the temperature rise rate in the oxygenolysis and catalytic chain scission stages of the silicon nitride green body is increased. According to the method, the degreasing time is shortened by 40% or above, the warping rate of the green body is reduced to be smaller than or equal to 1%, the single-stack stacking amount is increased to be larger than or equal to 30 pieces, and the production efficiency and the product quality are remarkably improved.

The utility model relates to the field of 3D printing, in particular to plastic additive powder anti-agglomeration mixing equipment which comprises a bottom plate, a lifting assembly is arranged on the bottom plate, and a mixing assembly is arranged on the lifting assembly; according to the anti-agglomeration mixing equipment for the plastic additive powder, through the arrangement of the mixing assembly, the scheme adopts a multi-motor cooperative driving composite motion mechanism, a second motor drives a stirring frame to realize shearing and convection dispersion of materials in a barrel, and a first motor drives a rotating frame and the mixing barrel to rotate, so that space migration and collision of the materials are enhanced; the third motor enables the rotating frame to rotate reversely through the chain wheel and the transmission chain, and a multi-dimensional complementary movement track is formed. The multi-shaft linkage mode effectively breaks through the limitation of traditional single-shaft stirring, the dispersion efficiency and uniformity are remarkably improved, and the agglomeration phenomenon is efficiently eliminated by strengthening friction and collision among particles, so that the mixing quality of the plastic additive powder is ensured to meet the high-standard process requirement.

The invention relates to the technical field of adhesives, in particular to a multifunctional sanitary material hot-melt pressure-sensitive adhesive and a preparation method thereof. The multifunctional sanitary material hot-melt pressure-sensitive adhesive is prepared from the following raw materials in parts by mass: 15 to 16 parts of SBS (Styrene Butadiene Styrene), 4 to 5 parts of SIS (Styrene Isoprene Styrene), 50 to 60 parts of petroleum resin and 20 to 30 parts of softening agent. The hot-melt pressure-sensitive adhesive prepared by the preparation method disclosed by the invention has the strong adhesive property of a structural adhesive and the excellent creep resistance of a rubber band adhesive, can meet the dual requirements of adhesion between sanitary material layers and rubber band fixation, and can improve the performance stability and market competitiveness of a product after being used.

The invention relates to the technical field of metal materials, in particular to a high-strength aluminum alloy and a casting method and a heat treatment method thereof. The high-strength aluminum alloy comprises the following components in percentage by mass: 4.8%-5.2% of Cu, 0.6%-1.0% of Mn, 0.15%-0.18% of Ni, 0.25%-0.45% of Mg, 0.25%-0.35% of Ti, less than or equal to 0.15% of Fe, less than or equal to 0.15% of Si, less than or equal to 0.2% of Zn and the balance of aluminum and impurities, and the impurities are less than or equal to 0.1. According to the method, on the basis of high-strength aluminum alloy of an A206 alloy aluminum-copper-manganese-magnesium system, the content of elements such as Cu, Mg, Ni and Mn is accurately controlled, and an optimized solid solution-aging process is combined, so that a theta phase (an equilibrium phase and inhibited), an S phase (a main strengthening phase), a T phase (a high-temperature strengthening phase) and a sigma phase (a structure stable phase) form an ordered multi-phase system. All phases compete for solutes and have complementary functions, and high strength, excellent castability and wide temperature range stability which are difficult to consider by a traditional aluminum alloy are finally realized through a synergistic mechanism of'intragranular dispersion strengthening and grain boundary stability strengthening '.

The invention discloses a low-whitening ethyl cyanoacrylate adhesive composition and a preparation method thereof, and relates to the technical field of instant dry adhesives. The low-whitening ethyl cyanoacrylate adhesive composition is prepared from the following components in parts by weight: 80 to 88 parts of alpha-ethyl cyanoacrylate, 1.2 to 4.0 parts of a cyanoacetamide volatile anchoring agent, 5.0 to 12.0 parts of a low vapor pressure cyanoacrylate monomer, 0.055 to 0.38 part of a stabilizer and 2.0 to 7.0 parts of a thickening agent. According to the low-whitening ethyl cyanoacrylate adhesive composition provided by the invention, the whitening phenomenon can be remarkably reduced, and the main monomer is still alpha-ethyl cyanoacrylate, so that the quick positioning, high shear strength and good adhesive property to various substrates of the traditional ECA adhesive are maintained; the comprehensive performance is balanced.

The invention relates to the field of steel rolling production, and aims to provide a production method for improving the overall performance uniformity of a wire rod, which comprises the following steps: S1, heating a steel billet by using a heat accumulating type heating furnace; s2, high-pressure water is used for dephosphorization, and oxide skin on the surface of the high-temperature steel billet is removed; s3, performing rough rolling, intermediate rolling, pre-finish rolling and finish rolling on the dephosphorized steel billet to form a wire rod; s4, before the length set at the front end of the wire rod falls into the Stelmor roller way, the Stelmor roller way is decelerated, after the length set at the front end of the wire rod falls into the Stelmor roller way, the Stelmor roller way recovers the speed, and before the length set at the tail end of the wire rod falls into the Stelmor roller way; s5, the wire rod is subjected to slow cooling through a Stelmor roller way and then is rolled, and the rolled wire rod is fed into a heat preservation vestibule to be slowly cooled again; in this way, the head section and the tail section after spinning can be evenly distributed and are kept consistent with the middle section, and therefore the problem that small-specification wires are not evenly distributed on the Stelmor roller way after spinning is solved.

The application discloses a kind of high-strength plastic β titanium alloy strip and whole-process preparation method, the β titanium alloy strip is composed of the following mass percentage components: Cr 7.7%~8.3%, Mo 4.9%~5.5%, V 4.9%~5.5%, Al 2.7%~3.3%, Fe≤0.20%, C≤0.03%, N≤0.02%, H≤0.010%, O≤0.10%, and the rest is Ti;The preparation method comprises: one, forging;Two, hot rolling;Three, cold rolling;Four, heat treatment.The β titanium alloy strip and whole-process preparation method of the application are overall planning from component design to final heat treatment whole-process procedure, improve production efficiency, shorten preparation time, and the β titanium alloy strip solid solution state microstructure is equiaxed β fine grain structure, strength-plasticity matching is high, horizontal longitudinal organization performance is uniform, with excellent comprehensive mechanical properties, applicable to metal processing field.

The application discloses a kind of thin layer nanocomposite membranes and its preparation method and application, belong to membrane separation technical field.The method first polyamino monomer and 2,4,6-triformylphloroglucinol in organic solvent are catalyzed polymerization, and covalent organic polymer nanoparticles are prepared;Subsequently, the nanoparticles are reacted with sodium alginate to obtain hydrophilic modified nanoparticles;Finally, the modified particles are added to the aqueous phase, and the organic phase is interfacially polymerized and heat treated on the substrate to obtain a thin layer nanocomposite membrane.The application constructs a hydrophilic network and a charged nanopore, significantly improves the permeation flux of the membrane, while maintaining a high rejection rate for divalent salt, achieving the synergistic optimization of high flux and high ion selectivity, and can be applied to water treatment, desalination, magnesium-lithium separation and other fields.

This utility model relates to the field of resin impregnation auxiliary technology for carbon fiber composite materials, and discloses a resin impregnation auxiliary device for carbon fiber composite materials, including a base, a column fixedly connected to the surface of the base, a stirrer mounted on the surface of the column, a tank placed on the surface of the base, a stirring structure provided on the surface of the stirrer, the stirring structure including a stirring rod, the stirring rod fixedly connected to the surface of the stirrer, a plurality of drive gears fixedly connected to the surface of the stirring rod, a plurality of supports fixedly connected to the arc surface of the stirring rod, and drive rods rotatably connected to both sides of the supports. This resin impregnation auxiliary device for carbon fiber composite materials, by setting the stirring structure, achieves multi-dimensional stirring to realize uniform mixing of resin and additives, realizes efficient mixing of resin and additives, and provides a resin system with uniform performance for subsequent carbon fiber impregnation processes.

The application discloses a forming method of a composite material flange and a die thereof in the technical field of aviation structure connecting piece manufacturing, and comprises die pretreatment, layered paving design, twisted filament core material preparation and soft die auxiliary forming. The fiber arrangement is optimized by arranging the R area gradient paving and the flexible gasket in a spaced mode, and the structure stability is ensured by combining the tooth groove locking edge packaging. A step type heat sealing and pressing curing process is adopted, and the R area and the plane area are synchronously compacted by cooperating with the air bag pressurization. The process covers core material filling verification, vacuum pre-pressing and temperature control demolding, and finally a high-precision flange component is obtained. Through the synergistic process of the gradual pre-compaction and the step type heat sealing and pressing curing, the application effectively solves the problems of poor fiber adhesion, uneven pressure and stress concentration of the R area of the composite material flange, realizes the continuous arrangement of the fiber of the complex curved surface, significantly reduces the internal stress of the interface, and finally obtains a high-quality flange component with a compact structure and uniform performance.

The utility model relates to metal material production and manufacturing technical field, more particularly to a kind of silver alloy's continuous casting system.A kind of silver alloy's continuous casting system, including vacuum induction device, electrode stick, pulse power, crystallization cooling device and support device;The vacuum induction device is to carry out vacuum induction treatment to silver alloy raw material, to form hot melt liquid;One end of the electrode stick is contacted with the hot melt liquid, and the other end of the electrode stick is connected with the positive pole of the pulse power;The crystallization cooling device is to carry out crystallization treatment to the hot melt liquid, to form casting rod;The support device is to support the casting rod, and the casting rod is connected with the negative pole of the pulse power by the support device.The continuous casting system in the utility model, by the cooperation of each device, the growth of columnar crystal can be controlled, the quality and performance of bonding wire and casting are improved, the production cost is reduced, and the production efficiency is improved.

The application relates to the technical field of surfactants, in particular to a low-foaming composite surfactant and application thereof in metal cutting, characterized in that the low-foaming composite surfactant is composed of 55-65% of nonionic surfactant, 4-12% of anionic surfactant, 10-20% of co-surfactant, 3-12% of functional additive and the balance of deionized water; the nonionic surfactant at least contains fatty alcohol polyoxyethylene ether and isomeric tridecanol polyoxyethylene ether; the anionic surfactant is selected from one or more of sodium alkyl benzene sulfonate, sodium fatty alcohol ether sulfate and alpha-olefin sulfonate; the co-surfactant at least contains alkyl glycoside; and the functional additive contains defoaming agent and antirust agent. The foam elimination efficiency is greatly improved through optimization of the nonionic surfactant combination and adoption of a special defoaming agent compounding scheme, and the generation and accumulation of foam in the cutting process are effectively inhibited.

This application discloses a thickened steel pipe sleeve, its heat treatment method, and its application, belonging to the field of metallic materials technology. The method includes: subjecting the thickened sleeve forming part to a first-heated sleeve by quenching at a temperature of 880-900℃; subjecting the first-heated sleeve to a first-water quenching to obtain a first-water-quenched sleeve; subjecting the first-water-quenched sleeve to a second-heated quenching at a temperature of 920-940℃; subjecting the second-water-quenched sleeve to a second-water quenching to obtain a second-water-quenched sleeve; cooling the primary and secondary sleeve bodies with external spraying and internal spraying, and cooling the thickened end with external spraying, internal spraying, and supplementary water; the external spraying flow rate is 2800-3200 m³ / h; the internal spraying flow rate is 1000-1500 m³ / h; and the supplementary water flow rate is 400-600 m³ / h. 3 / h; The secondary heating and tempering treatment of the sleeve yields a thickened steel pipe sleeve. The yield strength and tensile strength deviation of the tube body and the thickened end of the thickened sleeve after heat treatment in this application are ≤30MPa.

The application discloses a multi-specification Ti551 titanium alloy ingot preparation method and belongs to the non-ferrous metal processing technical field. The composition of the Ti551 titanium alloy is as follows in terms of percentage by mass: Al 4.5%-5.5%, Mo 0.5%-2.5%, V 0.5%-1.5%, Zr 1.0%-3.0%, Cr 0.5%-1.5%, Sn 0.5%-1.5%, Fe≤0.25%, O≤0.12%, and the balance is Ti and inevitable impurities. The method comprises the following steps: proportionally weighing raw materials such as titanium sponge, zirconium sponge, Al-Mo-containing intermediate alloy, Ti-Sn-containing intermediate alloy, aluminum beans and TiO2; pressing the raw materials into electrode blocks with a density≥3.2g / cm 3 ; obtaining consumable electrodes through vacuum welding; preparing ingots through three-time vacuum consumable arc furnace smelting, the vacuum degree of the three-time smelting is all≤6Pa, and the diameter of the crucible ranges from Φ570mm to Φ1240mm. The application solves problems such as the increase of melt viscosity, poor fluidity, uneven ingot composition and the like caused by multiple alloy elements, and establishes a complete smelting process system covering 5-20-ton multi-specification ingots.

The invention discloses a carbon ceramic closing resistor for a high-voltage circuit breaker and a preparation method of the carbon ceramic closing resistor, and belongs to the technical field of power elements. The problems of poor resistor compactness, non-uniform performance, insufficient mechanical property and the like caused by high pressing and sintering difficulty, process instability and high and non-uniform resistor porosity of the carbon ceramic resistor are solved. The preparation process of the resistor comprises the following steps: by taking aluminum oxide and quartz as ceramic phases, presintered kaolin, mullite and potassium feldspar as clay phases and carbon black or graphite as conductive phases, pre-coating the ceramic phases with the clay phases, carrying out vacuum calcination on pre-coated powder, mixing the pre-coated powder with the secondarily added clay phases and the conductive phases, carrying out spray granulation, pressing a green body, sintering and spraying. And obtaining the carbon ceramic closing resistor. According to the invention, the kaolin is pre-sintered, and the clay phase is pre-coated with the ceramic phase, so that the subsequent blank pressing uniformity and density are increased, the structural defects of the carbon ceramic resistor are reduced, and in combination with the spark plasma sintering technology, the batch rapid production of the resistor can be realized.

The invention discloses a preparation method of a carbon fiber felt anode material with a tin-antimony oxide coating, which comprises the following steps: step 1, selecting a carbon fiber felt, cleaning with acetone to remove oil stains, cleaning with deionized water, and finally drying and dehydrating; step 2, preparing sol containing tin salt and antimony salt; 3, the sol containing the tin salt and the antimony salt obtained in the step 2 serves as precursor sol, and a gel wet film is formed on the surface of carbon fibers in the carbon fiber felt through an impregnation method; then drying the gel wet film to obtain a gel dry film; and 4, performing vacuum plasma surface treatment on the gel dry film obtained in the step 3 until the gel dry film is converted into a tin-antimony oxide film with a conductive function, thereby obtaining the carbon fiber felt anode material with the tin-antimony oxide coating. The method is used for improving charge transfer impedance and corrosion resistance of the anode material and improving battery efficiency.

The application provides a high-casting-performance beryllium aluminum alloy and a preparation method thereof, and belongs to the technical field of alloy materials.The preparation method comprises the following steps: preparing materials according to the weight percentages of Be ingots, Al ingots, Ag ingots, Co sheets, Si and La metals; placing the Ag ingots, the Co sheets, the Si and the La metals at the bottom of a crucible, then sequentially placing the Al ingots and the beryllium ingots into the crucible, refining, and obtaining a melt; uniformly stirring the melt, then gradually cooling the melt to a pouring temperature, then pouring the melt into a prefabricated ceramic mold shell, and standing for 3-5 minutes in a furnace and cooling outside the furnace.The beryllium aluminum alloy has a uniform and dense structure, good fluidity, high casting performance, and is easy to be cast into a shape, and has fewer casting defects.

The invention relates to the technical field of reagent detection, and discloses a chicken mycoplasma synoviae plate agglutination detection system as well as a detection method and application thereof. The detection sensitivity is improved, and the revolutionary breakthrough of the detection sensitivity is realized by constructing a'biotinylated recombinant antigen-streptavidin-color microsphere 'cascade signal amplification system; the detection specificity is high, cross misjudgment is effectively avoided, the high-purity and high-specificity genetic engineering recombinant p80 / vlhA fusion protein is adopted as a core recognition element, and interference of non-target impure protein is completely eradicated from an antigen source; the result interpretation is visual and objective, and the detection result is presented in the form of red particles or flocculent agglutination which can be clearly seen by naked eyes, and is clearly compared with a uniform red opacifying background.

The application discloses a bidirectional stretching flame-retardant reinforced nylon film for lithium ion battery packaging and a preparation method thereof. First, two multifunctional inorganic modified compounds, mesoporous silica coated carbon nanotube hybrid and phosphorus-nitrogen synergistic flame-retardant reinforced titanium dioxide nanorod, are designed and synthesized. Then, the two inorganic modified compounds are added as core additives, and mixed with a nylon matrix, an antioxidant, a lubricant, a dispersant and an electrolyte-resistant modifier to obtain a composite master batch through melt extrusion granulation. Finally, the composite master batch is subjected to melt extrusion, casting, bidirectional stretching, shaping and winding to obtain the bidirectional stretching flame-retardant reinforced nylon film for lithium ion battery packaging. The nylon film prepared by the application has excellent flame-retardant performance, mechanical strength, electrolyte corrosion resistance, aging resistance and processing performance, and the preparation process is simple, green and environment-friendly, and can meet the application requirements of high-end lithium ion battery packaging fields such as lithium ion battery soft packaging and hard shell packaging.

The application relates to the technical field of high polymer materials, and particularly discloses a bio-based polyether ether ketone as well as a preparation method and application thereof. The bio-based polyether ether ketone is prepared by the following steps: mixing a bio-based diphenol monomer, alkali, 4,4'-difluorobenzophenone, a water-carrying agent and a polar organic solvent, refluxing the water-carrying agent at 30-150 DEG C, evaporating the water-carrying agent at 40-150 DEG C, performing a final polymerization reaction at 150-260 DEG C, and then sequentially performing precipitation, washing and drying to obtain the bio-based polyether ether ketone. The bio-based polyether ether ketone provided by the application uses renewable biomass as a raw material to construct a core molecular structure, retains the core properties of traditional polyether ether ketone, such as high-temperature resistance and chemical corrosion resistance, and optimizes and improves the solubility and processing fluidity.