15results about How to "Troubleshoot Migration" patented technology

The invention discloses a thermal runaway early warning threshold calculation method and device and a thermal runaway early warning method based on fuzzy logic, and the calculation method comprises the steps: representing parameters in a to-be-optimized parameter set of a fuzzy membership function through an antibody in an initial population, and carrying out the iterative optimization of the initial population through an immune clone selection algorithm, obtaining a global optimal solution of the parameter set; determining an optimal fuzzy membership function based on the global optimal solution of the parameter set; mapping different environment temperatures and charging rates to different fuzzy intervals through the optimal fuzzy membership function, outputting early warning thresholds under different environment temperature and charging rate combination conditions, and constructing corresponding relations between different combination conditions and the early warning thresholds; the problem of migration of the thermal runaway early warning threshold under different environment temperatures and charging rates is solved.

The invention provides a ternary high-nickel positive electrode material and a preparation method thereof, a lithium ion battery and electric equipment, and relates to the field of lithium ion batteries. The preparation method of the ternary high-nickel positive electrode material comprises the following steps: mixing a positive electrode material precursor, a lithium source and a zirconium-containing additive, and carrying out primary sintering to obtain a primary sintered product; mixing the product obtained after primary sintering with a titanium-containing additive, and carrying out secondary sintering to obtain a product obtained after secondary sintering; mixing a product obtained after secondary sintering with water and aluminum nitrate, and carrying out wet washing coating, filtering and drying to obtain a coated material; and mixing the coated material with an additive containing doping elements, and sintering for three times to obtain the ternary high-nickel positive electrode material. A uniform needle-shaped coating layer can be formed on the surface of a product after secondary sintering, direct contact between an electrolyte and the material can be prevented, side reactions are reduced, migration of lithium ions to the surface can be avoided, the structural stability of the material is kept, and the capacity exertion is facilitated.

The invention provides a carbon fiber gauze, a preparation method thereof and a carbon fiber reinforced composite material. The carbon fiber gauze comprises short carbon fibers and carbon nanotubes, wherein the carbon nanotubes are bonded to the short carbon fibers through a polymer adhesive; and the mass percent of the carbon nanotubes in the carbon fiber gauze is 1.8-18.6%. According to the carbon fiber gauze, chopped carbon fibers and carbon nanotubes are organically combined, and a unique multi-scale hierarchical toughening structure is constructed. When the carbon fiber gauze is used in a carbon fiber composite material, the chopped carbon fibers play a role in bridging and deflecting cracks among layers, so that the propagation of microcracks can be effectively inhibited. And the carbon nano tube absorbs energy in a resin-rich area at the crack tip of the carbon fiber composite material through mechanisms such as pulling out and breaking, so as to inhibit the generation of nano-scale cracks. In addition, the carbon nanotubes are adhered to the short carbon fibers through the polymer adhesive, so that the carbon nanotubes can be firmly fixed on the short carbon fibers, and the functional stability of the carbon fiber gauze or the carbon fiber composite material is ensured.

The application discloses a kind of high weatherability polyvinyl chloride cable material and preparation method thereof, including the following weight parts of component: PVC resin 100 parts;Plasticizing system 35-55 parts;Dynamic crosslinking toughening compound 8-20 parts;Calcium-zinc stabilizer 4-8 parts;Ultraviolet light stabilizing system 0.3-1.5 parts;Flame-retardant-reinforcing synergic system 30-60 parts;Processing lubricating system 1-3 parts.The application constructs dynamic reversible ionic crosslinking network in PVC cable material for the first time, and simultaneously solves the two big problems of small molecule plasticizer migration and low temperature brittleness, unifies the inherent contradiction of cold resistance and anti-migration;Gradient refractive index core-shell toughening agent is designed and applied as "structured ultraviolet trap", and the ultraviolet absorption efficiency is greatly improved through physical optical mechanism, realizes the synergy of toughening and super long weather resistance, and does not depend on excessive carbon black, which provides design space for product color.

The invention relates to an anti-aging spraying-free ABS (Acrylonitrile Butadiene Styrene) material and belongs to the technical field of spraying-free ABS materials. A sulfydryl modifier is creatively utilized to carry out surface treatment on the pigment, surface sulfydryl is firstly constructed, then cis-1, 2-dimethylol ethylene is used as a bridging agent, unsaturated double bonds of cis-1, 2-dimethylol ethylene and the sulfydryl are subjected to a click reaction, grafting of double-terminal hydroxyl groups is achieved, hexamethylene diisocyanate is added, and the surface sulfydryl modified pigment is prepared. The preparation method comprises the following steps: converting a double-terminal hydroxyl group into a double-terminal isocyanate group based on the action of a hydroxyl group and an isocyanate group, and finally finishing the modification of a polar group and an antioxidant by taking a material prepared from glycollic acid and 2, 2 '-thiobis (4-methyl-6-tert-butylphenol) according to a certain mass ratio as a composite modifier, thereby obtaining the modified pigment. The anti-aging spray-free ABS material is obtained by mixing the modified polypropylene with the lubricant and ABS, extruding and the like in sequence, and not only is good in aesthetic effect, but also is excellent in anti-aging performance.

The invention discloses an interface structure of a high-reliability silicon nitride AMB substrate and a preparation method thereof, and relates to the technical field of semiconductor substrate preparation, and the preparation method specifically comprises the following steps: S1, mixing and stirring metal powder and an organic carrier to obtain silver-free soldering paste; s2, silver-free soldering paste is printed on the two faces of the silicon nitride ceramic, copper sheets are stacked on the outer sides of the two faces, printed with the soldering paste, of the ceramic, clamping is conducted, and a copper-soldering paste-silicon nitride ceramic-soldering paste-copper lamination layer is obtained; and S3, transferring the laminated layer obtained in the S2 for vacuum brazing, and forming an interface structure between the copper sheet and the silicon nitride ceramic to obtain the high-reliability silicon nitride AMB substrate. The silicon nitride AMB substrate interface structure prepared by the invention comprises the nitride reaction layer formed by the active elements and the silicon nitride ceramic and the buffer layer formed by staggering the needle-shaped alloy layer and the copper layer, so that the silicon nitride AMB substrate interface structure has a good stress buffer effect and very high temperature reliability.

The steel cord comprises a core strand and a plurality of outer strands twisted on the periphery of the core strand, each of the core strand and the outer strands is formed by weaving and twisting N monofilaments, and the value of N ranges from 2 to 6. A coreless monofilament structure is adopted, a plurality of monofilaments are twisted into strands to form a more open structure, the diameter of each monofilament is larger than 0.3 mm, the monofilaments are suitable for a belted layer of an OTR tire, the rigidity of the cord thread is improved, protection of the belted layer is enhanced, meanwhile, a single-layer structure replaces a multi-layer structure, the better rubber permeation effect is achieved, and the service life of the tire is prolonged. The problem of center steel wire migration is well solved, and the safety of the tire becomes better.

The application relates to the technical field of lost foam casting, and provides nodular cast iron lost foam casting paint and a preparation method thereof. The lost foam casting paint comprises quartz powder and a first modified component with a mass ratio of (85-95):(5-10), and a mixture mainly formed by mixing coke powder and a second modified component with a mass ratio of (2-8):(2-4) through ball milling; the first modified component mainly comprises calcined clay and spodumene powder with a mass ratio greater than 1; and the second modified component mainly comprises iron oxide powder and borax with a mass ratio of (2-4):1. The application solves the problems of high-temperature expansion and cracking of the quartz paint and migration of harmful elements of the carbonaceous material by generating a low-expansion stable phase on the surface of the quartz aggregate particle through innovative material composite design and further in-situ reactive encapsulation of the introduced carbonaceous material, so that a new type of paint with extremely low cost but reliable performance and metallurgical safety is obtained.

The application discloses a bus parameter determination method and device, equipment, a storage medium and a program product, relates to the power distribution technical field, and matches the electrical characteristic parameters of the historical project of the corresponding equipment type according to the equipment type of the newly-built project, determines the bus current of the newly-built project according to the first total installed power of the newly-built project and the electrical characteristic parameters of the historical project of the corresponding equipment type. This differentiated bus current determination method according to different equipment types overcomes the limitations of the traditional fixed coefficient method, so that the bus parameters and the bus determined according to the bus current can accurately match the actual working conditions of the newly-built project, thereby avoiding the overload risk caused by the selection of too small equipment, and avoiding the investment waste and operation loss caused by the selection of too large equipment.

The present application relates to the technical field of high molecular dyes, in particular to a recyclable blue chromophoric monomer, a preparation method thereof, a blue polyester, a preparation method and recycling method thereof, and a recycling method of the recycled coloring monomer. The blue chromophoric monomer comprises a 1,4-diarylamino anthraquinone chromophore and at least one hydroxyalkyl segment, the 1,4-diarylamino anthraquinone chromophore and the at least one hydroxyalkyl segment are bonded through a heteroatom, and the hydroxyalkyl segment can react with a polyester-forming monomer. The blue polyester formed by the blue chromophoric monomer has uniform color and excellent color fastness, and can be subjected to alkaline alcoholysis to obtain a blue chromophoric monomer with high purity and a polyester-forming polyacid, thereby realizing simultaneous closed-loop recycling of the polyester monomer and the colorant. The industry problem that the traditional colored polyester colorant is difficult to recycle at high value is fundamentally solved, and key technical support is provided for the circular economy development of textile materials.

This invention belongs to the field of polymer functional materials technology, specifically relating to a biodegradable light-converting film with intrinsic fluorescence and its applications. The biodegradable light-converting film is prepared from a biodegradable copolyester with aggregation-induced emission properties. The biodegradable copolyester is polymerized from a polymerizable monomer, a first monomer providing rigid conjugated units, and a second monomer providing flexible spacer units. In the main chain structure of the biodegradable copolyester, the longest linear spacer segment between any two adjacent rigid conjugated units derived from the first monomer has ≥10 carbon atoms. Through precise molecular structure design, the aggregation-induced emission properties are chemically bonded to the biodegradable polyester main chain, fundamentally solving the problems of easy migration, aggregation quenching, and high cost of the light-converting agent in traditional additive-type light-converting films. This light-converting film exhibits efficient and stable intrinsic fluorescence in the solid state, with tunable fluorescence color, and possesses good mechanical properties and biodegradability.

The invention belongs to the technical field of lithium ion batteries, and discloses a single crystal positive electrode material for a lithium ion battery, nickel cobalt lithium manganate is used as a matrix, the surface of the matrix is coated with composite fluoride LiCoNxFy, x is more than or equal to 0.2 and less than or equal to 5, y is more than or equal to 4 and less than or equal to 8, the composite fluoride accounts for 1-5 mol% of the matrix, and a proper amount of protective layer can ensure that the matrix is uniformly and compactly covered, so that the single crystal positive electrode material is prepared. And meanwhile, the integrity of the alpha-NaFeO2 type layered structure of the matrix is kept. The invention also discloses a preparation method, double coating of NFn and LiCoF3 is realized through a three-step sintering process, and the prepared single crystal positive electrode material still keeps a complete alpha-NaFeO2 type layered structure. The invention also discloses a lithium ion battery composed of the single-crystal positive electrode material for the lithium ion battery.

The utility model belongs to the release film technical field, concretely relates to a double barrier layer silicone oil anti -transfer release film, including PET base material layer, the both sides of PET base material layer are provided with first barrier layer and second barrier layer respectively, one side of first barrier layer away from PET base material layer is equipped with the concave -convex structure that continuously and evenly distributes, be provided with the corona layer on first barrier layer, be provided with heavy silicone oil layer on the corona layer, one side of second barrier layer away from PET base material layer is equipped with the corrugated surface, be provided with light silicone oil layer on the corrugated surface. Through the setting of above -mentioned component, effectively prevent release agent transfer.

The invention relates to the technical field of evanescent mode casting, and provides a nodular cast iron evanescent mode casting coating and a preparation method thereof.The evanescent mode casting coating is prepared from quartz powder and a first modified component according to the mass ratio of (85-95): (5-10), and a mixture mainly prepared from coke powder and a second modified component according to the mass ratio of (2-8): (2-4) through ball milling and mixing; the first modified component is mainly composed of calcined clay and spodumene powder with a mass ratio of greater than 1; and the second modified component is mainly composed of iron oxide powder and borax in a mass ratio of (2-4): 1. Through innovative material composite design, a low-expansion stable phase is generated on the surfaces of quartz aggregate particles, and further, the introduced carbonaceous material is subjected to in-situ reactive packaging, so that the high-temperature expansion cracking problem of the quartz coating and the harmful element migration problem of the carbonaceous material are solved; the novel coating which is extremely low in cost, reliable in performance and safe in metallurgy is obtained.

This invention belongs to the technical field of flame-retardant polyether polyols and their preparation, specifically relating to a method for preparing a highly flame-retardant phosphazene-based polyether polyol. The method involves a nucleophilic substitution reaction between hexachlorocyclotriphosphazene and water in the presence of an acid-binding agent, generating a polyhydroxyl-containing phosphazene derivative as an initiator. Using this initiator as the core, other small-molecule polyols are combined, and propylene oxide undergoes ring-opening polymerization under the action of a catalyst to form a polyether polyol with a "phosphazene ring-polyether chain" structure. Due to the presence of the phosphazene ring in the molecule, this product possesses both excellent flame-retardant properties and good reactivity, and can be directly used to synthesize flame-retardant rigid polyurethane foams, elastomers, and other materials, solving the problem of requiring additional flame retardants in traditional polyether polyols. This invention features highly controllable processes, readily available raw materials, and a product with excellent comprehensive performance, making it highly valuable for industrial applications.