46results about How to "Stable physical structure" patented technology

The invention relates to a zeolite-loaded nano-iron material and a preparation method thereof. It is composed of zeolite and nano-iron loaded on the pores and surfaces of zeolite particles. The average particle size of the zeolite is 80-100 mesh, and the loading amount of nano-iron is 1 wt%. ~1.3wt%, the particle size is 50~200nm. It is made by soaking and rinsing zeolite particles with HCl solution, 3 Shake the reaction in the solution until the zeolite is saturated to adsorb Fe 3+ , rinsed with deionized water and then added NaBH 4 The solution shakes and reacts, removes the supernatant, freezes and dries to obtain the finished product. The zeolite-loaded nano-iron prepared by the present invention has strong adsorption capacity and reduction ability for pollutants. Tests have shown that the zeolite-loaded nano-iron material of the present invention can realize various heavy metal ions such as Pb in water bodies. 2+ 、Cd 2+ and Cr 6+ The removal rate can reach more than 99%. It has the advantages of high removal rate and fast reaction rate. The preparation process is simple and controllable, and the cost is low. It provides a better technical approach for solving heavy metal pollution in water.

The invention provides ultra-thin run-resistant underwear produced by adopting a cylinder loom and a production process of the ultra-thin run-resistant underwear. The production process comprises the following steps: (1) wrapping by taking spandex as inner-wrapped silk and taking polyamide as outer-wrapped silk to obtain a wrapped yarn; (2) weaving: weaving the wrapped yarn by adopting the cylinder loom comprising a stocking machine to obtain a stocking blank; (3) sewing: cutting and sewing the socking blank to obtain stockings, so as to facilitate subsequent dyeing and sizing; (4) dyeing: bagging and dyeing the stockings to obtain colorful stockings; (5) sizing: sizing the colorful stockings by adopting an underwear sizing plate and endowing the colorful stockings with run-resist functions; (6) cutting: cutting the sized stockings according to a sample plate and cutting each of the stockings into two sleeveless underwear bodies; (7) sewing. In addition, the invention further provides the underwear produced by the production process. On the premise of not increasing the novel equipment investment, an ordinary cylinder loom (comprising the stocking machine) is directly adopted for producing the underwear, so that high quality and inexpensiveness are realized.

The present invention belongs to the sensor field and discloses a micro-electro-mechanical system-based photonic crystal nano-fluid sensor. The micro-electro-mechanical system-based photonic crystal nano-fluid sensor includes a photoresist layer, a silicon wafer substrate, a first refractive index material film layer, a second refractive index material film layer and a polymer material sealing layer; the top of the second refractive index material film layer is provided with a square waveform gate structure; the gate structure includes a plurality of through grooves and a plurality of protrusions, wherein the through grooves and the protrusions are arranged alternately; the photoresist layer, the silicon wafer substrate, the first refractive index material film layer and the second refractive index material film layer commonly form a sensor base body layer; and a fluid inlet and a fluid outlet are arranged on the sensor base body layer. The sensor of the invention is a photonic crystal-based nano-fluid sensor. With the sensor adopted, the problems of high quantity of consumed detection objects, long detection time and low test precision of a traditional photonic crystal sensor can be solved, and the problems of functional singleness, instable structure and few channels of a traditional nano-fluid sensor can be solved.

The invention discloses a preparation method of a zinc oxide gas desulfurizing agent. The preparation method comprises the following steps of: weaving fiber filaments into a three-dimensional full-five-direction woven part with beamed yarns by adopting a four-step three-dimensional weaving technology; mixing a Zn(NO3)2.6H2O solution with the concentration of 0.10-0.25 mol / L and an NH3.H2O solutionwith the volume fraction of 25% according to any proportion to obtain a hydrothermal solution; putting the obtained three-dimensional full-five-direction woven part into the hydrothermal solution, and carrying out hydrothermal reaction in a room-temperature environment to generate a zinc oxide nano structure; and carrying out high-temperature roasting treatment on the generated zinc oxide nanostructure to obtain the zinc oxide gas desulfurizing agent. The process route of the desulfurization material is simple and easy to implement, and can meet the performance requirements of desulfurizationagent industrialization; and the desulfurizing agent adopts a fiber material with high flexibility and rich porosity as a carrier to construct a multistage micro-pore structure of the desulfurizing agent, so that the adsorption capacity and desulfurization reaction activity of the desulfurizing agent can be improved.

The invention discloses a negative electrode piece of a lithium ion battery, a preparation method of the negative electrode piece and a lithium ion battery. The preparation method of the negative electrode piece of the lithium ion battery comprises the following steps of (1) preparing a graphene oxide solution with the concentration being 1-20mg / mL; (2) preparing a mixed solution of nano silicon particles and a polymer; (3) fixing a current collector on a receiving device by an electrostatic spraying mode, performing electrostatic spraying on the graphene oxide solution obtained in the step (1) and the mixed solution obtained in the step (2) in sequence to respectively obtain a layer of graphene oxide thin film and a layer of silicon-polymer thin film, and defining the two layers to be layers A and B; (4) repeatedly spraying the graphene oxide solution and the mixed solution to finally form a plurality of AB layer structures on the current collector; and (5) carbonizing the current collector covered with the multiple AB layer structures to obtain the negative electrode piece. According to the preparation method disclosed by the invention, the technology is simple and the cost is relatively low; furthermore, the prepared negative electrode piece is relatively high in capacity and can meet application requirements.

The invention discloses a SiC-graphene nano-composite and a preparation method thereof. The SiC-graphene nano-composite has a core-shell structure with the core covered with the shell, wherein the core is made of SiC nano particles, and the shell is made of nano graphite composed of the graphene. The preparation method includes steps of (1) precursor pyrolysis: heating and pyrolyzing the polymer pyrolysis into SiC nano particles at the inert gas atmosphere in a chemical gas-phase deposition furnace; (2), chemical gas-phase deposition: heating continuously until silicon atoms on surfaces of the SiC nano particles are sublimed and escape, forming graphite fragments by means of recombination of the residual carbon atoms, and finally obtaining the SiC-graphene nano-composite by deposition and growth of the graphite fragments. The SiC-graphene nano-composite has the advantages of excellent physical and chemical properties and mechanical properties, simplicity in preparation process, low cost and wide application range.

The invention belongs to the field of carbon-chemical industry, and specifically relates to a core-shell structure ferromolybdenum catalyst and its preparation and application. The preparation process is as follows: preparing ferric nitrate solution, weighing dried molybdenum trioxide, completing the process of impregnating molybdenum carrier with iron-containing solution under the action of ultrasonic waves, and then drying, calcining and molding to obtain molybdenum-iron catalyst with core-shell structure. The method not only has simple process, few steps and short period, but also solves the problem of iron loss in the traditional method, and does not generate waste water in the preparation process. The ferromolybdenum catalyst with core-shell structure provided by the invention is composed of uniformly distributed and synergistic two-phase iron molybdate and molybdenum trioxide, and constitutes a core-shell structure in which an iron molybdate layer coats molybdenum trioxide particles microscopically. This structure effectively inhibits the volatilization and loss of molybdenum trioxide, ensures the stability of the catalyst element composition, physical structure, and physical and chemical properties, and exhibits excellent activity, selectivity, and stability when used in the oxidation of methanol to formaldehyde.