37results about How to "There will be no reunion" patented technology

The invention discloses a method for preparing a carbon nanotube / graphene composite material, which comprises adding graphene oxide slurry and a surfactant into a single-layer glass reactor and stirring evenly, and then adding the carbon nanotube slurry to obtain a mixed slurry The mixed slurry is dried and crushed; the crushed particles are added to a muffle furnace, expanded in the air, and cooled to normal temperature after reduction treatment to obtain a powdered carbon nanotube / graphene composite material; the powdered composite material and The slurry-like carbon nanotube / graphene composite material was prepared by solvent mixing and ultrasonic vibration. The preparation method provided by the invention has the advantages of simple process, convenient preparation and low energy consumption, and is suitable for large-scale industrial production; the carbon nanotube / graphene composite material prepared by the method has excellent performance and can be used as a conductive additive for lithium-ion batteries , can significantly improve the high-current rapid charge and discharge performance of lithium-ion batteries, and can be used as materials for supercapacitor electrodes and fillers to improve the electrostatic conductivity of paints and coatings.

The invention discloses a method for preparing a parallel-oriented FePt magnetic nano-composite film, which is characterized by comprising the following steps: 1, utilizing an amphiphilic block copolymer PS-P4VP to self-assemble into a reverse micelle in methylbenzene, and then adding metal salt, namely FeCl3 and H2PtCl6 into reverse micelle solution to form a metal salt supported reverse micelle; 2, utilizing a spin-coating method to obtain a reverse micelle array on a silicon substrate, and obtaining an FePt nano-particle array with good monodispersity through oxygen plasma etching and hydrogen plasma etching; 3, using a magnetic control sputtering method to cover an SiO2 protective layer on the FePt nano-particle array; and 4, performing high-temperature annealing on a sample under protective atmosphere to finish the production of the parallel-oriented FePt magnetic nano-composite film.

The invention discloses a rare-earth metal compound and a synthetic process thereof. The chemical general formula of the rare-earth metal compound is shown in the specification, wherein x is more than 0, and y is not less than 0; m and n are more than 0, and m+n is equal to 3(x+y); z is equal to x+y; and Re is any of rare-earth metal elements except for Eu. The rare-earth metal compound can serve as a red fluorescent material, and the rare-earth metal compound has good acid resistance properties, alkaline resistance properties and powder dispersibility compared with the red fluorescent material in the prior art.

The invention discloses a preparation method of a SnS2 sodium-ion battery anode material with a cubic structure. The preparation method comprises steps as follows: 1), sodium thiosulfate is dissolved in deionized water, a solution A is prepared, stannic chloride pentahydrate is dissolved in the equal amount of deionized water, and a solution B is prepared; 2), the solution B is dropwise added to the solution A, a solution C is obtained, hexadecyl trimethyl ammonium chloride is gradually added to the solution C, and a solution D is obtained; 3), the solution D is subjected to ultrasonic oscillation in an ultrasonic generator; 4), pH of the mixed solution D after ultrasonic oscillation treatment is regulated, and a solution E is prepared; 5), the solution E is subjected to a hydrothermal reaction; 6), after the reaction, a precursor is taken out, centrifugally washed with ionized water and anhydrous ethanol and then subjected to freeze drying, and the SnS2 sodium-ion battery anode material with the cubic structure is obtained. The preparation method is low in preparation cost, simple to operate and short in preparation cycle, and the prepared SnS2 sodium-ion battery anode material with the cubic structure has excellent charge-discharge rate performance.

The invention discloses a method for preparing a carbon / carbon-boron nitride friction-reducing composite material. The graphitized C / C green body is acidified, washed to neutral to obtain a pretreated C / C green body, and then soaked In a solution containing a modifier, react to obtain a functionalized C / C green body, and then immerse the functionalized C / C green body in the h-BN slurry, and dry to obtain a C / C-BN prefabricated body, C / C-BN prefabricated body is carbonized and densified by carbon source, and graphitized to obtain C / C-BN antifriction composite material; the modifier is selected from silane coupling agent or polyvinyl alcohol (PVA) . The invention adopts the slurry impregnation method firstly to obtain the BN matrix. After functionalizing the C / C body, the BN powder can be effectively introduced into the C / C body during the slurry impregnation process. This method can effectively avoid the damage of carbon fibers and ensure the excellent structural strength of C / C‑BN composites. The obtained C / C‑BN composites have excellent friction and wear properties.

The process of preparing ordered hexagonal nanometer FePt particle array includes the following steps: 1. self-assembling inverse micelle with amphiphilic block copolymer PS-block-P2VP intoluene; 2. adding metal salts FeCl3 and H2PtCl6 into the inverse micelle solution through stirring for the metal salts FeCl3 and H2PtCl6 to be combined with the P2VP kernel of the inverse micelle to form inverse micelle with supported metal salts; 3. depositing the inverse micelle with supported metal salts onto smooth monocrystalline substrate through dip coating to obtain ordered hexagonal inverse micelle array; and 4. oxygen plasma etching to eliminate copolymer substrate and reduce metal salt into simple substance so as to obtain homogeneous ordered hexagonal nanometer FePt particle array on the monocrystalline substrate.

The invention provides a foaming agent composition, a preparation method and application thereof, a foamed ceramic wallboard powder and a preparation method thereof, and relates to the technical field of ceramic materials. The foaming agent composition of the present invention is mainly prepared from the following raw materials in parts by mass: 90-110 parts of foaming agent, 1-20 parts of polyethyleneimine and / or polyacrylamide, 350-450 parts of water, organic 100-150 parts of solvent and 0.01-1 part of enhancer. The invention can alleviate the problems that the foaming agent micropowder is not easy to disperse, easy to agglomerate the foaming agent micropowder and affect the product quality in the preparation of the existing foamed ceramic wallboard powder, and can improve the dispersion performance of the foaming agent. Powder performance, improve product quality and quality.