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 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 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 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 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 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 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 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%.