41results about How to "Uniform and stable structure" patented technology

The invention discloses a preparation method and application of monatomic iron-doped carbon quantum dot nano enzyme, and the preparation method comprises the following steps: fully dispersing citric acid, urea and iron salt, and fully reacting in a closed container; the ferric salt is any one of ferric citrate, iron methionine or ferrous lactate. The monatomic iron-doped carbon quantum dot nano-enzyme provided by the invention is good in dispersity, excellent in water solubility and uniform and stable in structure, has efficient antioxidant enzyme activity, can be easily absorbed by plants, can remarkably improve the antioxidant capacity and stress resistance of the plants after being applied, can remove excessively accumulated active oxygen of the plants, and also can effectively inhibit the growth of the plants. The soil heavy metal pollution control agent can control soil heavy metal pollution, also can improve the removal efficiency of antioxidant enzymes in plants, reduce heavy metal absorption and increase the plant yield, has the characteristics of small dosage, low cost, high efficiency, high environmental safety and easy use, and provides a new technology and product choice with practical application value for treatment of soil heavy metal pollution.

The invention discloses a preparation method and application of composite nanoparticles with a gold-silver core-shell structure, and aims to solve the problems that silver halide precipitates are generated on the surface of a silver core and the silver core is etched in the prior art. The thiourea solution is used for replacing a halogen-containing reagent, uniform epitaxial growth of gold on the surface of the silver core is mildly achieved, the gold-shell silver-core nanoparticles which are evenly wrapped and stable in structure are prepared, and the gold-shell silver-core nanoparticles are suitable for the fields of immunodetection and the like and are good in color development effect and low in cost. The method comprises the steps of preparing a gold salt solution, preparing gold nano-seeds, preparing silver nano-cores and generating gold-shell silver-core nano-particles through a chemical reduction reaction, and the problem that a core-shell structure grows unevenly is solved. When the method is applied to immunodetection, the material cost can be remarkably reduced, and a better color development effect can be achieved.

The invention discloses a vanadium-based neutron transparent alloy material and a preparation method thereof, the alloy is a disordered solid solution of a body-centered cubic structure formed by a single crystal phase, the chemical composition is V < 1-x > Mx, x is less than 0.1, V is a metal element vanadium, and M is selected from one or more of Al, Nb, Ta, Fe, Sn or Mo. According to the alloy, neutron diffraction peaks generated by metal vanadium can be effectively eliminated while a metal vanadium body-centered cubic crystal structure is not damaged, the neutron transparent alloy material is successfully prepared, the process is simple and feasible, the formula has diversified choices, multiple novel double-element vanadium-based neutron transparent alloys are prepared, and the neutron transparent alloy material has good application prospects. In addition, the multi-element vanadium-based transparent neutron alloy is prepared for the first time, all the materials have excellent chemical and mechanical properties, and compared with an existing Ti2.08Zr alloy, the multi-element vanadium-based transparent neutron alloy has better high-temperature chemical stability.

The invention discloses a composite saline alkali soil conditioner, which is prepared from the following ingredients in parts by weight: 30 to 40 parts of iron ion modified charcoal, 10 to 20 parts of inorganic waste residues, 5 to 10 parts of humic acid, 10 to 15 parts of modified polyacrylamide and 1 to 3 parts of auxiliary microbial agents. The modified polyacrylamide has a structure as shown in a formula A, the ratio of x to y to z is (10-15): (3-5): (2-3), and the molecular weight is 50000-120000. The composite saline-alkali soil conditioner provided by the invention is prepared by compounding the iron ion modified biochar, the inorganic waste residue, the humic acid, the modified polyacrylamide and the auxiliary microbial agent, has excellent salt reduction and carbon sequestration capabilities, reduces resource waste and environmental pollution by reusing agricultural and forestry wastes and the waste residue, and has a good application prospect. The method can be widely applied to the field of improvement of saline-alkali soil. # imgabs0 #

The invention discloses a method for representing low-temperature reduction degradation performance of pellets. The method comprises the following steps: (1) carrying out low-temperature reduction degradation reaction on the pellets at 400-600 DEG C; (2) the reduction expansion rate of the pellets after the reaction is detected, and the crack morphology of the pellets after the reaction is analyzed; and (3) the detected reduction expansion rate and crack morphology are jointly used as characterization of the low-temperature reduction degradation performance of the pellets. According to the method, the reduction expansion rate of the pellets at 400-600 DEG C is adopted, so that the method is more suitable for representing the low-temperature reduction degradation performance of the pellets with regular shapes; meanwhile, the pulverization process and mechanism of the pellets after the reaction can be intuitively reflected by combining different section crack shapes of the pellets after the reaction; the pellet low-temperature reduction degradation performance can be accurately represented. The method has the characteristics of simplicity in operation, easiness in implementation and high accuracy, and can better replace the traditional low-temperature reduction degradation performance index.

The utility model discloses a full-shielding grounding type armored field bus cable, which comprises two single-pair shielding twisted wire cores and two external fan-shaped polyethylene resin filling core frames, wherein the two single-pair shielding twisted wire cores and the two external fan-shaped polyethylene resin filling core frames are arranged in a cross shape to form a cable core; each shielding twisted-pair wire core comprises a wire core body which is formed by back-twisting and twisting two insulating wire cores and arranging the two insulating wire cores and two inner-layer fan-shaped polyethylene resin filling core frames in a cross shape, and the wire core body is sequentially wrapped by an aluminum-plastic composite belt longitudinal wrapping waterproof sub-shielding layer, a tinned copper wire inner grounding wire and a semi-conductive nylon water-blocking wrapping layer. The cable core is sequentially coated with an aluminum-plastic composite tape longitudinally-wrapped waterproof total shielding layer, a tinned copper wire outer grounding wire, a copper wire woven total shielding layer, an irradiation crosslinking linear low-density polyethylene inner sheath layer, a galvanized steel wire armor layer and an irradiation crosslinking linear low-density polyethylene outer sheath layer. The cable is balanced and stable in structure, the twisted wire cores are not easy to loosen, the anti-interference capability is enhanced, the cable is suitable for working in a humid environment for a long time, and the durability is better.

The utility model discloses an anti-bending and anti-deformation cable for charging an electric automobile, which comprises a power line core and a control line core which are arranged side by side at an interval, the power line core and the control line core are jointly wrapped in a polyurethane elastomer inner sheath to form a double-core integrated cable core, and the polyurethane elastomer inner sheath is provided with a connecting rib on an interval section between the power line core and the control line core. And a polyurethane elastomer outer sheath and an EVA (Ethylene Vinyl Acetate) wear-resistant protective layer are sequentially coated outside the polyurethane elastomer inner sheath. The cable core is stable in structure, high in mechanical strength, not prone to deformation, better in bending resistance, beneficial to prevention of wire and core breakage, more stable in signal transmission, higher in safety and reliability, resistant to abrasion, durable and better in applicability.

The invention relates to the field of casting, and discloses a production method of green sand as-cast high-plasticity nodular cast iron QT450-18, which comprises the following steps of: preparing pig iron, waste steel and foundry returns according to a certain proportion, and preparing the green sand as-cast high-plasticity nodular cast iron QT450-18 by using auxiliary materials such as a silicon carbide pretreatment agent, a high-temperature graphitization carburant, a rare-earth magnesium silicon iron nodulizer, a silicon barium inoculant and a silicon strontium inoculant. And purity and component stability of molten iron are ensured. In the smelting process, purification and adjustment are carried out through accurate temperature control and segmented addition of auxiliary materials, then spheroidizing is carried out through a pouring method, and the microstructure of a casting is optimized through ladle-to-ladle inoculation and stream inoculation. The final casting has excellent mechanical properties, including tensile strength greater than or equal to 440 MPa, yield strength greater than or equal to 300 MPa, elongation greater than or equal to 16%, and V-shaped notch normal temperature impact absorption energy greater than or equal to 8 J. The method is simple and convenient to operate, high in production efficiency and suitable for large-scale industrial production.

The invention relates to the technical field of thermoplastic material foaming, in particular to a preparation method of an ultralight foaming material with micropore channels. The invention relates to an ultralight foaming material with micropore channels. The ultralight foaming material comprises the following substances in parts by weight: 80-90 parts of thermoplastic matrix resin; 0.1 to 2 parts of a pore-foaming agent; 0.1 to 0.8 part of a functional auxiliary agent; 10 to 20 parts of auxiliary materials; the pore-foaming agent comprises one or a mixture of more of activated carbon, zeolite, porous ceramic and hollow glass microspheres. According to the technical scheme, the thermoplastic matrix resin is selected to be combined with the pore-forming agent, the composite material formed after foaming treatment has a good vacuum channel structure, the density of the material is effectively reduced, the porosity of the material is improved, on the basis, selection of the pore-forming agent is optimized, and the porosity of the material is improved. The prepared ultralight foaming material has different pore structures and adsorption performance, and more excellent material performance can be obtained through mixed use.

The invention discloses a mechanically activated kaolin modified fly ash phosphoric acid-based geopolymer and a preparation method thereof. The geopolymer is prepared from the following raw materials in parts by weight: 30-75 parts of fly ash, 15-60 parts of mechanically activated kaolin, 8-40 parts of red mud, 0.5-2 parts of a surface modifier, 10-35 parts of an acid activator and 10-35 parts of a solvent. The performance of the geopolymer is optimized, the early and final compressive strength of the geopolymer is improved, through the synergistic effect of the red mud and the mechanically activated kaolin, the preparation cost is reduced, the energy consumption and the environmental influence are reduced, and meanwhile, a new way is provided for resource utilization of the fly ash and other industrial byproducts. The geopolymer disclosed by the invention is suitable for various civil engineering projects such as road construction, foundation reinforcement, environment restoration and the like due to excellent mechanical properties, excellent durability and excellent environmental adaptability, and meets the requirements of sustainable development.

The invention discloses a high-toughness epoxy resin material as well as a preparation method and application thereof, and aims to solve the problems that traditional epoxy resin is high in brittleness, and strength and toughness are difficult to consider at the same time. The preparation method comprises the following steps: carrying out incomplete silane coupling agent surface modification on glass fibers to obtain modified glass fibers with part of silicon hydroxyl reserved; synthesizing modified polyurethane of which the tail end contains an isocyanate group; directionally grafting the two to form a compound; mixing and curing with epoxy resin and a curing agent to obtain a target material. Through the innovative design of controllable defect manufacturing and dynamic key directional anchoring, the normal-state high-strength and stress high-toughness synergistic performance is achieved, meanwhile, the material is stable in structure, has the dynamic repairing potential, can prolong the service life and is suitable for preparing coatings, electronic packaging materials and adhesives.

The utility model discloses a moisture-proof vibration-damping airport cable with unshielded control lines, which comprises an inner-layer cable core body formed by twisting seven power cable cores together, a cross-linked fluororubber longitudinal hole insulator, a copper net braided armor layer and a PUR outer sheath are sequentially wrapped outside the inner-layer cable core body, six longitudinal holes are uniformly distributed in the circumferential direction of the cross-linked fluororubber longitudinal hole insulator, and the outer sheath is wrapped outside the copper net braided armor layer and the PUR outer sheath. Each longitudinal hole is internally provided with three or four control wire cores and filled with polypropylene moisture absorption core materials, each power wire core comprises an inner conductor, an alignment type wholly aromatic copolyamide stretched fiber woven separation net, a nylon resin moisture-proof dielectric layer and a thermoplastic polyester insulating layer, and the outer diameter of the PUR outer sheath is 44-48 mm. The airport cable is balanced and stable in cable core structure, high in mechanical strength, better in vibration reduction performance, excellent in moisture-proof and water-blocking characteristics, suitable for laying and installation in a complex underground environment, and better in durability and applicability.

The invention belongs to the field of environment-friendly materials, and particularly relates to a method for preparing a sound insulation material by using solid waste plastics, which comprises the following steps: collecting specific solid waste plastics, classifying and pre-treating, preparing two modifiers (VMPA and BHMPTS), respectively applying the two modifiers to different plastic systems, mixing with various additives, forming by a specific process, and post-treating to prepare a sound insulation exterior wall material. The material effectively solves the problem of solid waste plastic pollution, and improves the sound insulation, mechanical property, weather resistance and environmental protection performance. The sound insulation performance is remarkably improved in middle and low frequency bands, the mechanical property is enhanced, the weather resistance is good, and the release amount of harmful substances meets the standard.

The invention belongs to the field of energy storage, and particularly relates to a high-performance NASICON type oxide electrolyte and a preparation method thereof. The electrolyte takes an NASICON type oxide as a matrix and contains polyoxometallate accounting for 0.1-20% wt of the NASICON type oxide, the electrolyte can effectively improve the sodium affinity and intrinsic ionic conductivity of the NASICON solid electrolyte, and the interface impedance of the prepared sodium symmetric half cell at room temperature is smaller than 20 omegacm < 2 > and is as low as 16.7 omegacm < 2 >. According to the invention, the reaction between the NASICON and the additive is more uniform by adding the polyoxometallate in situ, a uniform and stable structure is formed, and the sodium ion conductivity of the NASICON solid electrolyte is effectively improved.

The utility model discloses an anti-twisting loosening type anti-interference audio cable which comprises two insulating wire cores and two nylon fiber filling cores which are symmetrically arranged in a cross shape and are jointly twisted to form a cable core, and the cable core is sequentially coated with a PTFE semi-directional belt wrapping antifriction layer, an aluminum foil shielding layer and an irradiation crosslinking high-density polyethylene outer sheath layer. A tinned oxygen-free copper bar streamline is arranged between the antifriction layer and the shielding layer, the insulating wire core comprises a tinned oxygen-free copper conductor and an irradiation crosslinking low-density polyethylene insulating layer, the insulating wire core is back-twisted and twisted, the twisting pitch is 8-15 times of the outer diameter, the twisting direction of the insulating wire core is opposite to the twisting direction of the cable core, the sectional area of the insulating wire core is 0.2 mm2 to 1.5 mm2, and the outer diameter of the outer sheath layer does not exceed 9mm. According to the cable, the cable core structure is balanced, the double cores are twisted tightly and are not easy to loosen, the influence of interference generated between the double-core wire pairs is reduced, the external electromagnetic wave interference resistance is enhanced, and the stable signal transmission characteristic is ensured.

The application belongs to the technical field of photocatalytic nano antibacterial materials, and discloses a preparation method and application of artemisia carbon dot modified crystalline carbon nitride material. The material is composed of A-CDs and CCN, A-CDs retains the biological activity functional groups of artemisia and is uniformly modified in the interlayer of CCN. The preparation method comprises the following steps: preparing CCN solid and A-CDs powder respectively, then dispersing the two in deionized water, adjusting pH, and then performing ultrasonic dispersion, drying, grinding and staged calcination treatment, so as to obtain A-CDs@CCN material. The application improves the charge separation efficiency by embedding A-CDs in the interlayer of CCN, realizes the synergistic antibacterial effect of A-CDs and CCN, has high inhibition activity on staphylococcus aureus and escherichia coli, and is not easy to induce drug resistance. The preparation process is simple, the raw material cost is low, the obtained material is uniform in composition and stable in structure, and can be used in the field of antibacterial.

The invention relates to lightweight thermal insulation concrete and a preparation method, and relates to the field of building materials, the lightweight thermal insulation concrete comprises the following components by mass: 60-100 parts of cement, 5-10 parts of modified SEBS, 20-40 parts of fly ash, 30-60 parts of ceramsite, 0.5-1.5 parts of a compound foaming agent, 10-20 parts of a modified cellulose filler, 0.005-0.015 part of a foam stabilizer, 0.5-1.5 parts of a water reducer and 30-50 parts of water; the modified SEBS is prepared from the following raw materials: an SEBS body, itaconic acid and allyl glycidyl ether. The preparation method comprises the following steps: mixing and stirring cement, modified SEBS, fly ash and modified cellulose filler, adding ceramsite, and stirring to obtain a dry mixture; preparing a water reducing agent solution, and preparing a foaming agent dispersion liquid; adding water into the dry mixture, stirring, adding a water reducing agent solution, and stirring to obtain a wet mixture; and adding the foaming agent dispersion liquid into the wet mixture, and carrying out pressure foaming to obtain the lightweight thermal insulation concrete. The method has the effect of improving the thermal insulation performance and the anti-cracking performance of the concrete.

The invention provides a plant-based milk microcapsule containing walnut oil and a preparation method of the plant-based milk microcapsule, and relates to the technical field of plant-based milk microcapsules, SPI-Cur-NPs powder is prepared firstly, then emulsion is prepared, the emulsion and walnut oil are prepared into nano-emulsion, finally, the nano-emulsion, maltodextrin (MD), anhydrous trehalose (TA) and inulin (IN) serve as a mixed wall material system, and the plant-based milk microcapsule containing walnut oil is prepared. The plant-based milk microcapsules wrapping the walnut oil are prepared through spray drying, and the preparation method is simple; the composition of the anhydrous trehalose and the maltodextrin can alleviate the fracture formation of particles only containing the maltodextrin, and the prepared microcapsule powder forms a firmer intermolecular hydrogen bond network and an obvious amorphous structure, and enhances the integrity of the wall, thereby reducing the collapse of the particles, and significantly improving the encapsulation rate and solubility; the curcumin and the composite wall material form a compact and uniform coating layer, so that an effective physical barrier is provided, and the microcapsule powder has excellent oxidation stability.

This invention relates to the field of preparation method technology and discloses a method for preparing a low-density nylon foam material. The method includes selecting nylon resin as the matrix material, wherein the nylon resin is a blend of PA6 and amorphous nylon PA610 in a specific ratio, wherein the mass ratio of PA6 to PA610 is 60:40 to 80:20, and the melt strength of the nylon resin is greater than or equal to 18 Pa·s; introducing a composite foaming agent, wherein the composite foaming agent is a combination of a chemical foaming agent and a physical foaming agent; and adding a nucleating agent, wherein the nucleating agent is nano-sized silica, nano-clay, talc, or a combination thereof, wherein the mass content of nano-silica is 0.5% to 2.0%. This invention can maintain stable dimensions and mechanical properties in humid environments and has a uniform and stable cell structure.

The invention relates to the technical field of ultrathin glass, in particular to ultrathin optical glass and a processing technology thereof. The ultrathin optical glass is prepared from the following components in percentage by mass: 52 to 60 percent of silicon dioxide, 0 to 3 percent of boric oxide, 14 to 21 percent of aluminum oxide, 0.01 to 4 percent of lithium oxide, 7 to 12 percent of sodium oxide, 0 to 3 percent of potassium oxide, 0 to 3 percent of calcium oxide, 2 to 7 percent of strontium oxide, 0.01 to 4 percent of yttrium oxide, 0 to 2 percent of magnesium oxide, 0 to 2 percent of zinc oxide, 0 to 1 percent of zirconium dioxide and 0 to 3 percent of phosphorus pentoxide. 0.01 to 0.5% of a clarifying agent; the vibration mechanism is arranged in the annealing furnace, and the ultrathin optical glass is vibrated up and down in the annealing process of the ultrathin optical glass, so that release of internal stress of the ultrathin optical glass is promoted, the annealing effect of the annealing furnace on the ultrathin optical glass is improved, and meanwhile, the structure of the ultrathin optical glass is more stable and uniform.

The invention discloses a fluorescent antibacterial polymer taking natural extract curcumin as a raw material and application of the fluorescent antibacterial polymer in fluorescent fibers. The curcumin polymer has an aggregation-induced emission effect and an antibacterial property, and under the irradiation of a 365nm ultraviolet lamp, the polymer emits yellow-green fluorescence in a solid state. The invention discloses a preparation method of a fluorescent fiber with a curcumin polymer as a dye, which comprises the following steps: blending the curcumin polymer and a resin matrix, granulating to obtain a fluorescent master batch, adding the fluorescent master batch into fiber slices, and carrying out melt spinning to prepare the fluorescent fiber. And the fiber has relatively good luminescence characteristic and mechanical property.

The present invention relates to an antibacterial hydrogel dressing for diabetic wounds and a preparation method thereof, and relates to the field of hydrogel dressings. Sodium alginate is used as a carrier material, and attapulgite is used to improve the mechanical properties of the gel through the principle of fiber toughening, and the loading amount of glucose oxidase can be increased. The glucose oxidase can consume glucose at the wound in situ and generate hydrogen peroxide. The prepared hydrogel dressing can not only effectively consume glucose and alleviate the high-sugar environment of diabetic wounds, but also generate hydrogen peroxide. It can overcome the problem of difficult wound healing caused by the high-sugar environment of diabetes without adding additional antibacterial agents, and also overcome the problems of drug resistance and cytotoxicity of traditional antibacterial gels; the combination of calcium carbonate and GDL described in the present invention can effectively control Ca 2+ The formation rate of sodium alginate-based composite hydrogel is enhanced, which enhances the mechanical properties, drug loading properties and sustained release properties.

The present invention discloses a visualized carbon-based nanocatalytic drug, which includes a carbon nanodot substrate, a tumor targeting ligand, a metal ion chelator and a metal ion chelated therewith, wherein the metal ion chelator is modified on the surface of the carbon nanodot, and the tumor targeting ligand is coupled on the surface of the carbon nanodot. The preparation method includes the following steps: preparing a carbon nanodot substrate; preparing a metal ion chelator; preparing a tumor targeting ligand; preparing a bifunctional carbon nanodot; dispersing the bifunctional carbon nanodot in pure water, adding a metal ion solution and a tumor targeting ligand for reaction, and the product obtained after freeze-drying is a visualized carbon-based nanocatalytic drug. The drug of the present invention has the advantages of fluorescence emission function, uniform and stable structure, monodispersity, good water solubility, good catalytic efficiency, etc., and targets and transports $V ions to the inside of tumor cells, amplifies the oxidative stress of tumor cells by catalyzing a Fenton-like reaction, and thus efficiently kills tumor cells.

The invention provides a preparation method of a composite piezoelectric film, which comprises the following steps: adding a 0.5 Ba (Zr < 0.2 > Ti < 0.8 >) O < 3 >-0.5 (Ba0. 7Ca0. 3) TiO < 3 > nanowire into a buffer solution containing dopamine hydrochloride to obtain a 0.5 Ba (Zr < 0.2 > Ti < 0.8 >) O < 3 >-0.5 (Ba0. 7Ca0. 3) TiO < 3 > nanowire of which the surface is modified by dopamine; polyvinylidene fluoride and 0.5 Ba (Zr < 0.2 > Ti < 0.8 >) O < 3 >-0.5 (Ba < 0.7 > Ca < 0.3 >) TiO < 3 > nanowires with the surfaces modified with dopamine are dissolved in a spinning solvent respectively and mixed, and an electrostatic spinning solution is obtained; and carrying out electrostatic spinning by utilizing electrostatic spinning to obtain the composite piezoelectric film. The invention further provides a sensor prepared from the composite piezoelectric film, a preparation method of the sensor and application of the composite piezoelectric film sensor in heart sound monitoring.

This invention discloses a method for restoring the charcoal-grilled flavor of pike using a high-temperature, short-time oven baking process, belonging to the field of aquatic product processing technology. The invention employs a flameless, segmented oven heat treatment process: after thawing and cleaning, salt tumbling, low-temperature cold air drying, pre-baking at 170℃, and then short-time high-temperature baking at 270℃. This process eliminates the need for charcoal fire equipment and can be promoted in shopping malls and homes. By controlling the heat processing conditions, it fully stimulates the characteristic charcoal-grilled flavor compounds of aldehydes, ketones, and pyrazines. Verification using electronic nose, GC-IMS, free amino acids, and sensory analysis shows that the finished product is crispy on the outside and tender on the inside, with a high degree of charcoal-grilled flavor restoration and a full-bodied taste. It solves the safety and standardization problems of open-flame baking, is simple to operate and easy to mass-produce, and effectively enhances the added value of deep-processed Xinjiang pike.

The utility model discloses an anti-impact three-core flat mobile power cable for AC mining equipment, comprising a flat EPR insulation isolation core body, the EPR insulation isolation core body is provided with three circular longitudinal holes and two rectangular longitudinal holes which are staggered at intervals in a line shape, the circular longitudinal holes are internally sleeved with power conductors in a clearance manner, and the rectangular longitudinal holes are internally sleeved with the power conductors. A grounding conductor and a grounding detection conductor are respectively sleeved in the two rectangular longitudinal holes in a clearance manner, petroleum jelly is filled in gaps of the circular longitudinal holes and the rectangular longitudinal holes, and a butyl rubber water-blocking pressure-reducing layer, an anti-impact mixed-line woven mesh, a CPE sheath and an EVA wear-resistant protective layer are sequentially coated outside the EPR insulating isolation core body. The cable has good slight impact resistance, the cable core structure is balanced and stable, the wear resistance of the sheath is better, the sheath can be protected from cracking, and the durability is improved.

The utility model discloses a coal mine total shielding combination cable with a stable structure, which comprises coaxial video wire cores, telephone wire cores and signal wire cores which are arranged at intervals and are wrapped in a polyvinyl chloride wrapping layer together, and the polyvinyl chloride wrapping layer forms Y-shaped connecting ribs on interval sections among the coaxial video wire cores, the telephone wire cores and the signal wire cores. A polyester fiber plain woven fabric wrapping layer, an aluminum-plastic composite belt wrapping total shielding layer, a polyvinyl chloride inner sheath layer, a steel wire armor layer and a polyvinyl chloride outer sheath layer are sequentially wrapped outside the polyvinyl chloride wrapping layer, and a polyester staple fiber core strip is filled between the polyvinyl chloride wrapping layer and the polyester fiber plain woven fabric wrapping layer. The cable core structure of the combination cable is good in stability and high in mechanical strength, signal interference is not prone to occurring among the wire cores, signal transmission is more stable, and durability is better.

The invention discloses a liquid metal battery based on a high-entropy alloy electrode and a preparation method thereof, and belongs to the technical field of liquid metal battery electrode design, the liquid metal battery comprises a shell, and a positive current collector, a negative current collector and an electrolyte which are spread in the shell; a negative electrode material is adsorbed on the negative electrode current collector; the positive electrode current collector is provided with a positive electrode material, and the positive electrode material comprises more than three positive electrode active metals of Te, Se, Bi, Sb, Zn and Co and more than two additives X of Sn, Mo, Cu, Cd, Ga, In, W, Fe and Ni. The high-entropy alloy constructed by taking the tellurium-selenium metal as the core has a multi-metal structure and a uniform solid solution phase, so that the dissolution and side reaction of the tellurium-selenium metal and a product thereof in electrolyte are inhibited, the thermal runaway phenomenon is avoided, and the safety and coulombic efficiency of a high-temperature battery are improved.

The application discloses a kind of concrete internal curing agent for high-temperature underground chamber and its preparation method, belong to concrete material technical field.The internal curing agent is composed of sealing film liquid and superabsorbent polymer, sealing film liquid is compounded by epoxy modified polyurethane emulsion, nano silicon dioxide, carboxyl-containing acrylate copolymer, temperature-sensitive polyether polyol and coupling agent in proportion, form the core-shell structure with sealing film liquid as shell, SAP as core, with good high-temperature resistance and alkali resistance.The internal curing agent does not affect the working performance of concrete, in the high-temperature environment of 30~90 DEG C, when the hydration process of cement causes the pH value of pore solution in concrete to rise, the temperature of concrete rises and internal water shortage occurs, sealing film gradually ruptures under the synergistic effect of high temperature and high alkali, releases the water stored by SAP, provides the required free water for the continuous hydration of cement in concrete, effectively improves the strength and durability of concrete under high-temperature conditions.

The invention discloses a nanocrystal electrode with both electro-catalysis activity and photocatalytic activity. The preparation method comprises the following steps: firstly, polishing the titanium substrate, and soaking the titanium substrate in alkali liquor and oxalic acid; preparing an intermediate layer by adopting a non-equilibrium flame aerosol method, and forming a high-entropy ceramic layer on the surface of the titanium plate by setting parameters such as specific radio frequency power and carrier gas; a specific mixture is prepared and subjected to ball milling and other treatment to serve as a surface active layer starting material, the surface active layer is prepared through a plasma directional explosion method, and the steps are repeated and parameters are adjusted to improve compactness; and finally carrying out annealing treatment. The novel nanocrystal electrode has the characteristics of ultra-stable chloride ion penetration resistance, high mechanical strength, good conductivity, stability and uniformity and outstanding electro-catalysis and photocatalytic performance, and a new solution is provided for the field of advanced treatment of industrial sewage and wastewater.