10results about How to "Aperture adjustable" patented technology

This invention belongs to the field of fluorescent detection materials technology, specifically disclosing an open-type colorimetric fluorescent covalent organic polymer and its preparation and application. The preparation includes the following steps: dissolving 4,4',4''-(1,3,5-triazine-2,4,6-triyl)tris(2,6-dimethylaniline) and trialdehyde-resorcinol in 1,4-dioxane; uniformly adding acetic acid via ultrasonication; degassing three times using a refrigerated pump followed by heating reaction; sequentially washing with tetrahydrofuran and dichloromethane using a Soxhlet washing method; drying; passing through a 200-mesh sieve; and dry grinding. This invention utilizes the aforementioned open-type colorimetric fluorescent covalent organic polymer and its preparation and application. This open-type colorimetric fluorescent covalent organic polymer reacts sensitively with aminourea and 3,5-dinitro-2-hydroxyphenylenehydrazine, and can be used in open-type fluorescent chemical sensors to reduce the influence of other impurities on the detection results, thereby improving the detection sensitivity.

The embodiment of the present application relates to a kind of copper intermetallic compound porous materials and its preparation method and application, wherein, preparation method includes: metal Mg, Zn, Cu, M is mixed, is handled by induction smelting, and MgZnCuM alloy ingot is obtained;MgZnCuM alloy ingot is treated by spinning, and MgZnCuM precursor is obtained;MgZnCuM precursor is placed in gas phase de-alloying system and is treated by first vacuum heat treatment, and copper intermetallic compound porous material MgCuM is obtained;MgCuM has double continuous structure.The preparation method is simple and easy to operate, pore size is adjustable, and pore distribution is uniform, and the preparation process is environment-friendly and pollution-free.

This invention relates to the field of nanomaterials technology, specifically to a method for preparing silica using continuous flow. The method involves mixing an organic base, a surfactant, and water to obtain solution A; mixing a silicon source and an organic solvent to obtain solution B; reacting solutions A and B through a continuous flow apparatus, separating the solid product, and calcining it to obtain silica; wherein the flow rates of solutions A and B are 5-10 mL / min, and the reaction temperature is 20-45℃. In this method, silica is prepared using a continuous flow process, and the prepared silica has a nanosphere morphology with a specific surface area of ​​200-800 m². 2 / g, with a pore size distribution of 2-50 nm and a particle size distribution deviation (PDI) of less than 2%.

A temperature-responsive water harvesting hydrogel and a preparation method thereof, the water harvesting hydrogel is composed of N-isopropyl acrylamide, N,N,N',N'-tetramethylene ethylenediamine, N,N-methylene bisacrylamide, polyethylene glycol, ammonium persulfate and black titanium dioxide. The temperature-responsive water harvesting hydrogel of the present application combines the adjustable pore size of hydrophilic polyethylene glycol, the temperature response characteristics of N-isopropyl acrylamide and the excellent light-heat conversion performance of black titanium dioxide nanoparticles, and can be used as an efficient solar "switch". The temperature-responsive water harvesting hydrogel of the present application has good ability to remove pollutants tetracycline in water and sterilization ability under sunlight; has excellent water harvesting capacity; can realize self water harvesting-release cycle, thereby significantly improving water use efficiency and reducing water resource waste.

This invention relates to medical-grade polyetheretherketone (PEEK) composite materials, their preparation method, and human bone implants, belonging to the field of medical materials technology. It addresses the limitations of existing human bone implants in promoting bone tissue regeneration and repair, as well as their poor antibacterial properties. The composite material comprises 1000 parts PEEK powder, 100-500 parts of HAP-modified ZIF-8 composite material after sizing, 1-3 parts of silane coupling agent, and 2-5 parts of calcium stearate. The sizing-treated HAP-modified ZIF-8 composite material is obtained by reacting HAP, methylimidazole, and anhydrous zinc nitrate in a DMF solution of polyetherimide; wherein HAP comprises 3-21 parts, methylimidazole 100-350 parts, and anhydrous zinc nitrate 120-380 parts. This invention can be used in human bone implants, possessing antibacterial properties, strong binding ability to bone cells and tissues, and the ability to promote the regeneration and repair of bone cells and tissues, showing broad application prospects in the medical field.

The utility model relates to a kind of fruit and vegetable juice extraction equipment, belong to fruit and vegetable juice processing technical field.The equipment aims at the problem of laborious and inconvenient cleaning of manual juice extraction, provides a kind of solution.Equipment includes base, fixed rod, juice barrel, fixed inclined block, detachable juice extraction assembly (including funnel box and metal filter box), extrusion assembly (including pressing handle, rotating plate, gland) and brake assembly.When using, fruit is placed, and pressing handle drives gland to extrude juice vertically by rotating plate structure, and juice flows out after filtering.When cleaning, brake assembly is operated to quickly remove the fixing of juice extraction assembly, and funnel box and metal filter box are conveniently taken out for cleaning.This way reduces the strength needed for operation, and makes disassembly and cleaning more convenient.

The invention discloses an adsorption material with adjustable aperture, a preparation method, an RTO pretreatment device and an RTO pretreatment process, and belongs to the technical field of waste gas treatment, the adsorption material takes a hydrophobic porous adsorption material as a matrix, and the surface of the matrix is coated with a layer of MOFs filter membrane. Furthermore, in the adsorption material, the matrix is a hydrophobic Y molecular sieve, and the MOFs filter membrane is MILs. According to the method, the pore size of the MILs porous membrane is controlled by utilizing humidity and temperature, so that the adsorption capacity of the hydrophobic Y molecular sieve under different concentrations is controlled, a peak-reducing and thickening RTO pretreatment process is provided by utilizing the adsorption material with the adjustable pore size, and stable and safe operation of an RTO device is ensured.

The application discloses a preparation method of a nano-oriented porous structure, which comprises the following steps: adding an organic solvent into a polymer material / water solution to prepare a polymer material / water / organic solvent mixed solution; performing ultrasonic treatment on the polymer material / water / organic solvent mixed solution to form a polymer material / water / organic solvent mixed solution containing nano-level microdroplets; directionally freezing the polymer material / water / organic solvent mixed solution containing nano-level microdroplets to form a block containing nano-level microdroplets; and removing the water and the organic solvent from the polymer material / water / organic solvent block in a low-temperature high-vacuum environment and crosslinking the polymer material at a low temperature to obtain the nano-oriented porous structure. The porous structure has high porosity, high flux and excellent mechanical properties.

This invention relates to a composite sodium-replenishing material, its preparation method, an electrode, and a battery. The composite sodium-replenishing material comprises a matrix, a sodium-replenishing agent body, and a conductive reinforcement. The matrix is ​​porous carbon fiber; the sodium-replenishing agent body is distributed on the surface and within the pores of the matrix; the conductive reinforcement is partially embedded within the sodium-replenishing agent body and partially located on its outer surface. The preparation method of the composite sodium-replenishing material includes the following steps: hydrothermal treatment of a dispersion; the dispersion comprises porous carbon fibers, sodium salt, and a conductive reinforcement. The composite sodium-replenishing material of this invention can improve the initial efficiency and capacity retention of sodium-ion batteries.

This invention discloses an asymmetric polyethersulfone ultrafiltration membrane and its preparation method, belonging to the field of membrane separation technology. The preparation method of the asymmetric polyethersulfone ultrafiltration membrane includes the following steps: 15-30 parts of polyethersulfone, 2-10 parts of polyvinylpyrrolidone, 60-80 parts of a cyclic lactam solvent, and 1-8 parts of a volatile pore-forming agent are melt-mixed at high temperature according to the specified ratio, cast into a film, cooled and solidified, extracted with hot water, and dried to obtain the asymmetric ultrafiltration membrane. This application uses a system containing a cyclic lactam solvent and a volatile pore-forming agent, resulting in a low operating temperature during the preparation process, reducing energy consumption and promoting energy conservation and environmental protection. The obtained ultrafiltration membrane has an asymmetric structure, with a dense skin layer on the surface and a continuous sponge-like porous structure in the internal support layer. It has no macropores or finger pores and possesses high filtration accuracy and high flux, making it applicable to ultrafiltration, macromolecule retention, water treatment, and other fields.