40results about How to "Controllable equipment" patented technology

The invention relates to the technical field of synthesis and preparation of novel chemical materials and discloses preparation and application of organosilicone modified polyether polyol. The method effectively combines the advantages of an organosiloxane polymer and a polyether polyol chemically without extra addition of an organic high / low-temperature-resistant material, and the method is obviously better than the traditional method for preparing polyurethane memory foam.

The invention relates to a horseradish-peroxidase-mediated free radical initiation system and a method for preparing a hydrogel. The initiation system is composed of N-hydroxysuccinimide, horseradish peroxidase and hydrogen peroxide. By employing N-hydroxysuccinimide as an enzyme substrate, acetylacetone with relatively large biological toxicity is avoided. The preparation method is capable of initiating a monomer within 50 s-5 min at room temperature for preparing the hydrogel by adjusting the concentration ratio of the three-composition initiation system, is applicable to prepare a high-strength nanometer composite hydrogel, has the advantages of being friendly to environment and rapid and controllable in gel forming, and has obvious application prospect on the fields of medicine controlled release, enzyme immobilization, tissue engineering and the like.

The invention discloses a method for quickly synthesizing a metal organic framework material MIL-101. The method comprises the following steps: adding chromic nitrate, hydrofluoric acid, terephthalic acid, de-ionized water and carbon nanotubes or carbon fibers into an airtight reaction kettle according to a certain ratio, and reacting at 220 DEG C for 0.5-2 hours; after the reaction is finished, slowly cooling to room temperature, then performing centrifugal separation to obtain upper-layer solid, flushing the upper-layer solid by adopting dimethylformamide and absolute ethanol, drying in vacuum and activating to obtain the metal organic framework material MIL-101. According to the method, the metal organic framework material MIL-101 is quickly synthesized under the induction effect of the carbon nanomaterial, the shortcoming of long preparation time of a conventional method is overcome, and quick controllable preparation of the metal organic framework material MIL-101 is realized. The method has the characteristics of low investment and low operating cost, has wide application prospect, and can create remarkable economic benefits.

The invention discloses a preparation method of a high light transmission and low dielectric fluorinated graphene / polyimide composite film. The method is carried out according to the steps of: under an inert gas condition, adding an NMP suspension of fluorinated graphene into polyamide acid dropwise, and performing stirring continuously for 6-10h to obtain a mixed solution; subjecting the solutionto film coating and conducting thermal imidization, i.e. under an inert gas condition, conducting heat preservation at 80DEG C-300DEG C for 7-10h, thus obtaining the fluorinated graphene / polyimide composite film. The matrix raw material polyamide acid adopted by the invention is easily available, the preparation of fluorinated graphene is simple and controllable, and through thermal curing of fluorinated graphene and polyamide acid, compounding of polyimide and fluorinated graphene is realized. The fluorinated graphene / polyimide composite film obtained by the invention maintains the excellentproperties of polyimide, and also realizes low dielectric and high mechanical strength by compounding with fluorinated graphene.

The invention discloses a drug-loaded polymer vesicle with an asymmetric membrane structure, a preparation method and application in preparation of a drug for treating acute myeloid leukemia. An amphiphilic triblock polymer with polyaspartic acid PAsp, a targeted amphiphilic block polymer and a small molecule drug are assembled together to prepare the targeted small molecule drug-loaded polymer vesicle with the asymmetric membrane structure. The drug-loaded polymer vesicle disclosed by the invention has many unique advantages, including small size, simple and controllable preparation, reversible crosslinking, in-vivo stability, targeted delivery, high intracellular drug enrichment concentration, sensitive reduction, efficient killing of tumor cells, significant tumor growth inhibition effect and the like, and especially the drug-loaded vesicle disclosed by the invention has effective inhibition on both acute myeloid leukemia cell lines and patient cells. Therefore, the polymer vesicleis expected to become a simple and multifunctional nano platform for efficient and specific targeted delivery of drugs to tumor cells.

The invention relates to a preparation method of a cathode in-situ modified perovskite solar cell without an electron transport layer. The method comprises the following steps: firstly, replacing an organic solvent with an ionic liquid to prepare a precursor solvent to realize non-toxic and easy-to-control preparation; secondly, modifying an ITO (indium tin oxide) electrode by adopting ionic liquid to realize the effects of inhibiting interface recombination and matching an energy level; according to the method, the perovskite solar cell without the electron transport layer is prepared by adopting the ionic liquid, and the dual effects of in-situ ITO electrode modification and high-quality perovskite thin film are achieved by changing the preparation method of the perovskite thin film of the perovskite solar cell without the electron transport layer. Besides, compared with a traditional DMF (dimethylformamide) or DMSO (difluoromethyl ornithine) solvent, the precursor solution preparedfrom the ionic liquid is non-toxic, and the preparation process is simple and easy to control. Other materials and structures are not introduced, the device structure is simple, and the material costis low. The ionic liquid modifies the electrode, and the device performance is good.

The invention discloses a micromolecule drug-loaded polymer vesicle as well as a preparation method and application thereof. The micromolecule drug-loaded polymer vesicle is prepared by assembling anamphiphilic block polymer and a micromolecule drug, or assembling and crosslinking the amphiphilic block polymer and a functionalized amphiphilic block polymer, loading the micromolecule drug, and reacting with the targeting monoclonal antibody. The vesicle system provided by the invention has many unique advantages, including small size, simple and controllable preparation, excellent biocompatibility, high in-vivo cycling stability, strong tumor cell specific selectivity, high intracellular drug release speed, remarkable tumor growth inhibition effect and the like. Therefore, the vesicle system is expected to become a simple nano platform integrating multiple functions, and is used for efficiently and specifically delivering vincristine sulfate to multiple myeloma cells in a targeted manner.

The invention discloses an aminated polymer hollow nanomaterial preparation method. The method includes: in a water and ethyl alcohol system, taking ethylenediamine as a catalyst and an amine source, taking resorcinol and formaldehyde as polymer precursors, taking tetraethyl orthosilicate as a structural additive, performing emulsion polymerization to obtain silicon @ aminated resin core-shell nanospheres, and finally performing desilicification to obtain an aminated polymer hollow nanomaterial. Due to adoption of a one-step process for preparation of the aminated polymer hollow nanomaterial, compared with a traditional two-step method and a seed emulsion polymerization method, the preparation method has advantages of simplicity, convenience, mild conditions, reaction medium cleanness, few side reactions, high conversion rate and the like. The aminated polymer hollow nanomaterial prepared according to the method is highly dispersed and high in aminated groups and has a promising application prospect in the fields of energy sources, biological diagnosis, drug delivery, separation, environmental modification and the like.

The invention relates to the technical field of synthesis and preparation of novel chemical materials and discloses preparation and application of organosilicone modified polyether polyol. The method effectively combines the advantages of an organosiloxane polymer and a polyether polyol chemically without extra addition of an organic high / low-temperature-resistant material, and the method is obviously better than the traditional method for preparing polyurethane memory foam.

The invention belongs to the technical field of fluorescent nanomaterial synthesis, and discloses a method for preparing graphene quantum dots. The method comprises the concrete steps that benzoic acid is used as a carbon source and is flatly spread in a gas-phase detonation tube; vacuumizing is performed after the gas-phase detonation tube is sealed; meanwhile, the gas-phase detonation tube is heated to be higher than 100 DEG C, so that the benzoic acid is sublimated; hydrogen gas and oxygen gas are respectively introduced into the gas-phase detonation tube; gas in the gas-phase detonation tube is detonated; the heating on the gas-phase detonation tube is stopped, so that the gas-phase detonation tube is cooled to be lower than 60 DEG C; the gas-phase detonation tube is opened for collecting black products; the black products are graphene quantum dot powder. The method is simple and efficient; the graphene quantum dots can be fast synthetized in large scales.

The invention relates to preparation of a supported hollow sphere carbon material and application in electrocatalytic performance. A metal macrocyclic complex is supported by taking a hollow sphere carbon material as a carrier. The preparation method of the catalyst comprises the following steps of: (1) adding a certain amount of a template agent into ethanol and an alkaline solution, adding dopamine hydrochloride and derivatives thereof, stirring, centrifuging, drying, carrying out high-temperature treatment, carrying out alkaline washing to remove the template, washing with water to neutrality, and drying to obtain a hollow sphere carbon carrier, and (2) dissolving or dispersing the transition metal macrocyclic complex in an organic solvent, mixing with the hollow sphere carbon carrier prepared in the step (1), carrying out ultrasonic treatment, rotary evaporation, high-temperature roasting and acid washing to remove impurities, and washing to neutrality to obtain the supported non-noble metal electrocatalyst. The preparation method has the advantages that the preparation method is simple and easy to control, large-scale application is easy, and the prepared non-noble metal catalyst has very high oxygen reduction catalytic activity, selectivity and methanol poisoning resistance while the cost is reduced, thereby realizing a wide application prospect.

The invention provides a preparation method of a porphyrin nano-material and belongs to the field of material chemistry and biology. The porphyrin nano-material prepared by adopting a protonic acid doped co-solvent method has the advantages of small size, strong near-infrared absorption and very high photothermal performance. According to the preparation method provided by the invention, the adding amount of protonic acid is regulated and controlled so that the protonation degree of a porphyrin precursor is regulated and controlled, and furthermore, controllable preparation of an assembling body composed of a nano short rod, a nano-wire and nanoparticles can be regulated and controlled; good dissolution performance of a polar solvent on the porphyrin precursor is combined and a settling-out speed of the porphyrin precursor in a poor solvent is alleviated by utilizing an anion emulsifier; the adding amount of the protonic acid is adjusted so that the weak mutual action force between molecules of the porphyrin precursor is adjusted, and near-infrared absorption of the self-assembling body of the porphyrin precursor is realized.

The invention provides a three-dimensional memory structure and a preparation method thereof. The preparation method comprises the following steps: providing a semiconductor substrate; forming a laminated structure on the semiconductor substrate and forming a channel hole and a gate spacing groove in the laminated structure, wherein the gate spacing groove includes N sub-gate spacing grooves whichare vertically communicated, and N is an integer greater than or equal to 2. The gate spacing grooves of the three-dimensional memory are prepared into a structure including at least two sub-gate spacing grooves which are vertically communicated, the arrangement of a plurality of the sub-gate spacing grooves makes the preparation of the single sub-gate spacing groove easy to control, the key sizecan be reduced, the distance between the channel hole and the gate spacing groove can be further increased, the length of the subsequent gate layer can be increased, the resistance of the gate layercan be reduced, the device speed can be improved and the device performance can be optimized. The gate spacing groove cavity is prepared in the gate spacing groove so that the stress brought by the material layer can be relieved, the stress of the whole device structure can be relieved, the device resistance can be reduced and the device performance can be improved.

The invention discloses a perovskite CsPbX3 nanocrystal as well as a preparation method and application thereof. The preparation method comprises the following steps: in an inert atmosphere, heating a metal halide APbX3 precursor solution with an equivalent stoichiometric ratio, where A is H and / or DMA ions, and X is one or more halogens; and adding the cesium precursor solution into the mixed solution, reacting and rapidly cooling to obtain the CsPbX3 nanocrystal. In the method, the APbX3 compound which is easy to prepare and store is adopted as a lead and halogen source, so that the synthesized CsPbX3 nanocrystal has few defects, the situation that a perovskite structure is degraded due to the influence of light, heat, oxygen and water due to halogen defects is avoided, excellent physical and chemical stability is shown, and the luminous efficiency of the nanocrystal is further improved. Besides, the raw materials are cheap and easy to obtain, preparation is simple, the obtained nanocrystals are more stable, experimental reproducibility is good, and the method is suitable for industrial popularization and preparation.

The invention provides a high-strength self-cleaning reflective film and a preparation method thereof. The reflective film comprises a transparent supporting layer, a glass bead layer, a reflective layer, a self-cleaning layer and a protective layer; the surfaces of glass beads are coated with organic modified films, so that the glass beads are changed from hydrophilicity to lipophilicity, and the single-layer tightly and uniformly distributed glass bead layer is easily formed; when the reflective layer is prepared, the scaly glass powder and the scaly aluminum powder are overlapped in parallel, so that permeation of water, air, corrosive ions and the like is effectively prevented, the reflectivity, permeation resistance and corrosion resistance of the reflective film are improved, and the service life is prolonged; the self-cleaning layer is prepared from polycarbonate and benzoxazine modified TiO2-SiO2 composite particles, and the prepared self-cleaning layer is free of fluorine, non-toxic, high in light transmittance, resistant to ultraviolet rays and durable in self-cleaning; and the introduction of the protective layer enhances the wear resistance and self-cleaning property of the reflective film, and the mechanical strength of the reflective film is greatly improved.

The invention provides a method for preparing dabigatran etexilate. The method comprises the following steps: A) subjecting a compound as shown in a formula I and a compound as shown in a formula II to a reaction in an inert solvent so as to obtain a compound as shown in a formula III, wherein the compound as shown in the formula II comprises an R which is one selected from the group consisting of methyl, ethyl, propyl or isopropyl; B) subjecting the compound as shown in the formula III to activation through a hydrogen chloride solution in an inert solvent, and carrying out a reaction of the activated material and an ammonium salt so as to obtain a product IV; and C) subjecting a compound as shown in a formula IV and a compound as shown in a formula V to a reaction under the action of an acid-binding agent so as to obtain dabigatran etexilate VI. The method provided by the invention has the advantages of low cost, high yield, mild reaction conditions, avoidance of using unstable reagents, etc.

The invention discloses a method for preparing rare earth doped yttrium oxide fluorescent nanoparticles through a DBD technology, and the method comprises the following steps: (1) mixing a substrate metal organic matter and a doped metal organic matter according to a mass ratio of (10-40): 1, and grinding the mixture as a reaction precursor; (2) putting the precursor obtained in the step (1) into a container, and putting the container between the positive electrode and the negative electrode of a plasma reactor; and (3) applying alternating current between the cathode and the anode of the plasma reactor in an oxygen atmosphere, treating the precursor for a period of time, taking out the product every a period of time, and grinding to obtain powder containing the rare earth doped yttrium oxide nanoparticles. According to the invention, powder of rare earth doped yttrium oxide fluorescent nanoparticles is prepared by using a high-activity oxidation component one-step method through a DBD technology. The method is simple and easy to implement, green and efficient, high-temperature and high-pressure further reaction is not needed, and energy consumption is effectively reduced.

The invention relates to the preparation of a supported hollow spherical carbon material and its electrocatalytic performance application. The metal macrocyclic complex is supported by the hollow spherical carbon material as a carrier. The catalyst preparation method includes: (1) adding a certain amount of template agent into ethanol and alkali solution, then adding dopamine hydrochloride and its derivatives, stirring, centrifuging, drying, high temperature treatment, alkali washing to remove the template, and washing to After neutral drying, the hollow spherical carbon carrier is obtained; (2) the transition metal macrocyclic complex is dissolved or dispersed in an organic solvent, mixed with the hollow spherical carbon carrier prepared in (1), and subjected to ultrasonication, rotary steaming, high-temperature roasting, Impurities were removed by acid washing, and the supported non-precious metal electrocatalyst was obtained after washing with water to neutrality. The advantages of the present invention are that the preparation method is simple and easy to control, and is easy to be applied on a large scale. The prepared non-precious metal catalyst has high oxygen reduction catalytic activity, selectivity and methanol poisoning resistance while reducing the cost, so it has broad application prospects.

The invention provides a pyrene-containing 8-hydroxyl quinoline zinc complex dimerized crystal as well as a preparation method and an application thereof. The preparation method comprises the following steps: dissolving (E)-2-[2-(1-pyrenyl) vinyl]-8-hydroxyl quinoline in N, N-dimethyl formamide; dropwise adding methanol, wherein the volume ratio of N, N-dimethyl formamide to methanol is 1: (1-3); finally adding an N, N-dimethyl formamide solution containing zinc salt; putting the mixed solution in a sealed container; reacting at 65-85 DEG C till the crystal is separated out; filtering; washing the crystal by ethanol; and drying. The pyrene-containing 8-hydroxyl quinoline zinc complex dimerized crystal has the advantages of being high in light intensity, good in thermal stability, relatively good in fluorescent lifetime and the like, and has a remarkable economic value in applications such as preparation of light emitting materials or photo electroluminescent apparatuses and the like.

The invention belongs to the application field of reflective materials and products, and in particular relates to a reflective film based on a thermosetting coating and a preparation method thereof. First, aluminum powder and glass powder are melted and blended to protect aluminum better; further, using the function of thermosetting powder coating to easily form a stable film, the glass-protected aluminum powder is ground and dispersed in thermosetting powder coating, sprayed on a high temperature resistant base The film is used as the reflective bottom layer, and then sprayed with a layer of glass beads, cured at high temperature for bonding, and further coated with a hydrophobic self-cleaning coating to obtain a reflective film. In particular, thermosetting powder coatings have a softening process at 120-130°C. The present invention sprays glass microspheres onto the surface of the metal coating by means of this process, and then cures at high temperature, so that the half spherical surface of the glass microspheres is close to the metal layer, and the half spherical surface Fully exposed; thereby replacing the currently difficult-to-control process of plating metal on the hemispherical surface of glass beads, making the preparation of the reflective layer of the reflective film simple and easy to control.

The invention discloses an aminated polymer hollow nanomaterial preparation method. The method includes: in a water and ethyl alcohol system, taking ethylenediamine as a catalyst and an amine source, taking resorcinol and formaldehyde as polymer precursors, taking tetraethyl orthosilicate as a structural additive, performing emulsion polymerization to obtain silicon @ aminated resin core-shell nanospheres, and finally performing desilicification to obtain an aminated polymer hollow nanomaterial. Due to adoption of a one-step process for preparation of the aminated polymer hollow nanomaterial, compared with a traditional two-step method and a seed emulsion polymerization method, the preparation method has advantages of simplicity, convenience, mild conditions, reaction medium cleanness, few side reactions, high conversion rate and the like. The aminated polymer hollow nanomaterial prepared according to the method is highly dispersed and high in aminated groups and has a promising application prospect in the fields of energy sources, biological diagnosis, drug delivery, separation, environmental modification and the like.

The invention discloses a conductive lanthanum strontium manganese oxide ceramic film and a preparation method thereof, and a titanium-based lanthanum strontium manganese oxide ceramic electrode for a flow battery; the preparation method comprises: (1) using lanthanum salt, strontium salt and manganese salt The mixed sol is the precursor sol, and the gel wet film is formed on the surface of the substrate by dipping and pulling method; (2) the gel wet film is dried to obtain the gel dry film; (3) the gel dry film is subjected to crystallization pretreatment, until the gel dry film is transformed into a lanthanum strontium manganese oxide thin film; (4) finally carry out crystallization heat treatment to obtain a lanthanum strontium manganese oxide ceramic thin film. The titanium-based lanthanum strontium manganese oxide ceramic electrode of the flow battery comprises a titanium substrate and a lanthanum strontium manganese oxide ceramic thin film on the surface. The invention has the advantages of simple preparation process, low preparation cost and little environmental pollution; the prepared conductive film has strong bonding force with the metal substrate, high surface density, good electrochemical corrosion resistance and good conductivity; the preparation process is easy to control and is suitable for industrialization Production.

The invention relates to a method for preparing an electrode for electrochemical reduction of carbon dioxide, the electrode and its application. The electrode preparation method is to treat carbon felt and carbon paper in the air at 200-600 ° C, and then carry out the process in ethanol and acetone After degreasing treatment and cleaning, it is used as a substrate; metal deposition is carried out in an electrolyte solution at 5 mA cm-2 to 150 mA cm-2 for 1 to 3000 s; washing and drying are finally obtained. min-600 min; reduce it in H2 or a mixture of H2 and inert gas at 100-600°C for 30 min-240 min; wash and dry to finally obtain the electrode. The electrode prepared by the invention has controllable structure, high specific surface area and excellent selectivity for preparing formic acid by CO2 electrochemical reduction. This electrode has excellent ERC stability.

The invention discloses a preparation process of a self-sharpening metallic bond diamond abrasive material layer, and belongs to the technical field of abrasive tool processing. According to the technical scheme, basic composition materials of the abrasive material layer are mixed according to a set proportion; the surface of an abrasive tool base body is pretreated, and the mixed materials are sprayed to the pretreated surface of the abrasive tool base body through cold spraying to form the abrasive material layer; and the gap and pore content of a hard and brittle intermetallic compound generated in the abrasive material layer is controlled through a heat treatment process, and the abrasive material layer with the controllable self-sharpening performance is obtained. The abrasive material layer has controllable self-sharpening performance, good mechanical performance and a long service life, the manufacturing process is simple, and efficiency is high.

The invention provides a novel fluorene-containing 8-hydroxyquinoline zinc complex dimer crystal and its preparation method and application. The preparation method is as follows: (E)-2-[2-(fluorenyl) vinyl]-8-hydroxyquinoline is dissolved in N,N-dimethylformamide, methanol is added dropwise, the N, The volume ratio of N-dimethylformamide to the methanol is 1:2~4, finally add the N,N-dimethylformamide solution containing zinc salt, place the resulting mixed solution in a sealed container, 60 React at ~100°C until the crystals are precipitated, filter, wash the crystals with ethanol, and dry them. The dimeric crystal of the fluorene-containing 8-hydroxyquinoline zinc complex has the advantages of high luminous intensity, good thermal stability, and better fluorescence lifetime, and has significant economic value in the preparation of luminescent materials or photoelectric light-emitting devices. .

The invention provides a memory based on a polymer composite material and a preparation method thereof. The method comprises the following steps: A, depositing a bottom electrode on a flexible substrate; B, spin-coating the bottom electrode with a polymer composite material, and forming a polymer composite film through thermal annealing treatment; and C, depositing a top electrode on the polymer composite film. According to the invention, a polymer composite material doped with gold nanorods is prepared first using a solution method, and then, a memory is prepared based on the polymer composite material. The preparation method of the invention is simple and controllable, is of low cost, and can realize large-scale synthesis easily.

The invention discloses a catalyst for synergistically controlling nitrogen oxides and particulate matters in diesel engine tail gas as well as a preparation method and application thereof. The preparation method comprises the following steps: immersing cleaned and dried honeycomb ceramic into coating sol, standing for 30 minutes, taking out the honeycomb ceramic and blowing away the residual coating sol in honeycomb ceramic holes, and performing drying, and roasting at high temperature by a muffle furnace to obtain a catalyst carrier A loaded with the coating sol; adding metal active component precursor salt into the coating sol and stirring to be uniform to prepare active component sol B, wherein the metal active component precursor salt comprises manganese acetate, cerous nitrate and copper nitrate; and finally, immersing the catalyst carrier A into the active component sol B, standing for 30 minutes, taking out the catalyst carrier A and blowing away the residual active component sol B in pores of the catalyst carrier A, and performing drying, and roasting at high temperature by a muffle furnace to obtain the catalyst. The removal efficiency of the catalyst prepared by the invention on nitrogen oxides in a temperature interval of 220-330 DEG C exceeds 80%, and the removal efficiency on particulate matters is nearly 30%.

The invention provides a trifluoromethyl quinoline cadmium complex tetramer and its preparation method and application. The preparation method is as follows: (E)-2-[2-(2-trifluoromethyl) vinyl]-8-hydroxyquinoline is dissolved in N,N-dimethylformamide, methanol is added dropwise, The volume ratio of the N,N-dimethylformamide to the methanol is 1:1~3, and finally the N,N-dimethylformamide solution containing cadmium salt is added, and the resulting mixed solution is placed in a sealed In the container, react at 75-85°C until crystals are precipitated, filter, wash, and dry. The trifluoromethylquinoline-containing cadmium complex tetramer has the advantages of high luminous intensity, good thermal stability, good fluorescence lifetime, etc., and has significant economic value in the preparation of luminescent materials or photoelectric light-emitting devices and other applications.