7results about How to "Component adjustable" patented technology

The invention relates to the technical field of new energy materials and devices, and discloses a lithium-sulfur battery difunctional diaphragm and a preparation method thereof, the lithium-sulfur battery difunctional diaphragm comprises a diaphragm substrate and a load slurry, the load slurry is coated on the surface of the diaphragm substrate; the loaded slurry comprises an electrocatalyst material, and the electrocatalyst material is a monatomic catalyst carbon-based material / diatomic catalyst carbon-based material. The monatomic catalyst carbon-based material is a nickel monatomic catalyst carbon-based material or a cobalt monatomic catalyst carbon-based material; the diatomic catalyst carbon-based material is a nickel-cobalt diatomic catalyst carbon-based material. The nickel-cobalt diatomic catalyst coupled carbon-based material is applied to the field of lithium-sulfur batteries and serves as a lithium-sulfur battery diaphragm modification material, sulfur redox kinetics can be promoted, the shuttle effect can be inhibited, lithium ion flux can be induced, so that lithium dendrite growth is inhibited, and finally the cycle performance of the lithium-sulfur batteries is improved.

The invention discloses a liquid metal-hydrogel composite radiation protection material and a preparation method and application thereof.The preparation method comprises the steps that indium, tin and bismuth are sequentially put into a flask from low melting point to high melting point to be mixed, and glycerin is added for immersion; placing the mixture in an argon atmosphere, and stirring by using a heating type magnetic stirrer; taking out the spherical liquid metal particles from the glycerol, and finally washing and drying to obtain liquid metal alloy particles; preparing a PVA (polyvinyl alcohol)-H2O solution with the mass fraction of 15% and a PVA-DMSO (dimethyl sulfoxide) solution with the mass fraction of 15%; and a PVA-H2O solution, a PVA-DMSO solution and the liquid metal alloy particles are stirred and mixed according to the mass ratio, the mixed solution is subjected to ultrasonic treatment and then poured into a mold to be frozen into gel, and the liquid metal-hydrogel composite material is obtained. By combining the advantages of the liquid metal and the hydrogel, excellent biocompatibility, adjustable mechanical property and efficient radiation shielding capability are realized, and the hydrogel can be used as a novel lead-free radiation protection material.

The application discloses a kind of anti-impact nylon fibre for spacesuit and its preparation method, comprising: high molecular weight nylon 66 matrix 86.0-92.0wt%, multi-dimensional nano reinforcing phase 1.2-2.0wt%, multifunctional anti-impact microsphere 4.0-7.0wt%, in-situ interface compatibilizer and crosslinking point regulator 0.5-1.2wt%, aerospace-grade multifunctional stabilizing aid: 1.0-2.8wt%;The multi-dimensional nano reinforcing phase is compounded by amino graphene and amino carbon nanotube according to mass ratio 1:3-4;The multifunctional anti-impact microsphere is hollow polysiloxane-titania composite microsphere, the anti-impact nylon fibre for spacesuit and its preparation method disclosed by the application can realize the multifunctional integration of nylon fibre, meet the demand of space suit fibre.

The invention discloses a preparation method of a poly-citric-acid-based viscous composite coating, which comprises the following steps: step 1, dissolving citric acid, adding polyethylene glycol and 1, 8-octylene glycol, dropwise adding acrylic acid, stirring, and sequentially dissolving, dialyzing, purifying and vacuum freeze-drying to obtain a double-bond poly-citrate prepolymer; step 2, mixing polylysine with the double-bond polycitrate prepolymer to obtain a polycitrate composite solution; step 3, dropwise adding the poly-citrate composite solution to the surface of a matrix, and carrying out thermocuring to obtain a poly-citric acid-based viscous composite coating; the invention further discloses application of the poly-citric acid-based viscous composite coating. Acrylic acid is added into a prepared poly-citric acid prepolymer system to generate a double-bond poly-citrate prepolymer, polylysine is added to form a poly-citrate composite solution, the poly-citrate composite solution is thermally cured to form the poly-citric acid-based viscous composite coating with strong adhesive force, and the poly-citric acid-based viscous composite coating is suitable for the technical field of degradable biomedical materials.

This invention discloses an in-situ depolymerization modification composition of mineral-derived humic acid, its method, and its applications. The composition comprises a hydrogen bond acceptor and an acidic hydrogen bond donor, wherein the hydrogen bond acceptor is selected from one or more of choline compounds, betaine compounds, and quaternary ammonium salt compounds; and the acidic hydrogen bond donor is an aliphatic polycarboxylic acid or a hydroxycarboxylic acid. This method is simple, green, and efficient, yielding a product with low molecular weight, good water solubility, and strong resistance to hard water. It is suitable for various product forms such as solid fertilizers, liquid fertigation fertilizers, and soil conditioners, and has broad application prospects in modern agriculture and ecological restoration.

The invention provides a high-performance atomic-scale dispersion catalyst and a preparation method and application thereof.The preparation method comprises the following steps that S1, metal salt is evenly dispersed into an organic water solution to obtain a metal salt solution, and the metal salt solution is placed at the low temperature ranging from-20 DEG C to-80 DEG C for standby application; s2, placing a carrier in an alkaline organic water solution to obtain an alkaline solution, standing at low temperature, and keeping the temperature of the alkaline solution and the metal salt solution obtained in the step S1 uniform for later use; and S3, under the condition of keeping low temperature, slowly dropwise adding the metal salt solution into the alkali solution, simultaneously supplementing the alkali solution to generate a suspension, adjusting the pH value to the pH value range of metal ion precipitation, curing for 1.5-2.5 hours, naturally heating to room temperature, washing with alcohol, drying and calcining to obtain the high-performance atomic-scale dispersion catalyst. The high-performance atomic-scale dispersion catalyst is small in active center size, high in dispersity and excellent in catalytic efficiency and performance, and the method is easy to operate and high in controllability and has wide application prospects.

The invention discloses a catalyst, self-repairable degradable polyester and a preparation method thereof, relates to the technical field of polymer synthesis, and solves the problem of development limitation of self-repairable degradable polyester taking cheap commercial monomers as raw materials in the prior art. The self-repairing degradable polyester prepared by the invention is prepared by polymerizing epsilon-caprolactone, cyclic anhydride and epoxide under the catalysis of a catalyst and a promoter, the catalyst is prepared by reacting an amino compound, a salicylaldehyde compound, manganese acetate tetrahydrate and lithium chloride, and aims to promote the polymerization reaction of the monomers; therefore, polyester is endowed with self-repairing capability. The polyester prepared by the invention has adjustable components and structure, shows excellent mechanical properties, self-repairing ability and degradability, reduces the production cost and improves the synthesis efficiency by using cheap commercial monomers, and meets the requirements of sustainable development.