628results about How to "Suitable for mass manufacturing" patented technology

The invention discloses a graphene-latex functional high-strength protection glove and a production method thereof. The method comprises the following steps: (1) immersing a glove blank in a coagulating agent, immersing the glove blank in a graphene-latex composite liquid, and drying the immersed glove blank to obtain the glove; or (2) immersing the glove blank in the coagulating agent, drying the immersed glove blank, immersing the dried glove blank in the graphene-latex composite liquid, leaching the immersed glove blank, crimping the leached glove blank, drying the crimped glove blank, vulcanizing the dried glove blank, leaching the vulcanized glove blank, and drying the leached glove blank to obtain the glove. Compared with gloves in the prior art, the graphene-latex functional high-strength protection glove produced in the invention fully performs the advantages of high electricity conductivity, high strength, friction resistance and strong bacteriostasis of graphene, and has wide uses in the fields of the manufacturing industry, the medical industry, the chemical engineering industry and the space flight and aviation industry.

The invention relates to a preparation method of a graphene-based surface strain sensor. The method comprises the following steps: (1), preparing graphene oxide dispersion liquid; (2), spraying the graphene oxide dispersion liquid on a substrate to form a thin graphene oxide film; (3), carrying out chemical reduction or ultraviolet irradiation on the thin graphene oxide film to form a thin graphene film; (4), connecting two copper electrodes to the two ends of the thin graphene film by conducting resins and connecting an ohm gauge between the two electrodes; and (5), spraying or brushing a high molecular solution on the thin graphene film continuously to form a high-molecular latex film. Compared with the prior art, the thin graphene oxide film is prepared by spraying; reduction is carried out by using a certain means; and then the graphene-based surface strain sensor is prepared. Because the operation is simple, the cost is low, and large-scale preparation can be realized well, the preparation method can be applied to the heath monitoring of the building structure.

The invention discloses a modified graphite phase carbon nitride photocatalyst as well as a preparation method and application thereof. The modified graphite phase carbon nitride photocatalyst is prepared from urea and salicylic acid serving as raw materials by virtue of calcination, wherein a mass ratio of urea to salicylic acid is 1:(0.002-0.02). The modified graphite phase carbon nitride photocatalyst disclosed by the invention has the advantages of being high in specific surface area, wide in light absorption range, low in electron-hole pair recombination rate, excellent in photocatalyticperformance and the like, and has multiple reactive sites, excellent application value and application prospects. The preparation method has the advantages of being simple in process, wide in raw material source, low in cost, high in preparation efficiency, high in yield and the like, is suitable for large-scale preparation and is favorable for industrial production. The modified graphite phase carbon nitride photocatalyst disclosed by the invention can be used for degrading organic pollutants, has the advantages of being simple in process, convenient to operate, low in cost, high in treatmentefficiency, excellent in degradation effect and the like, and has excellent effects of degrading the various organic pollutants.

The invention discloses a surface modified nano ferroferric oxide Fenton catalyst and a preparation method thereof. The preparation method of the surface modified nano ferroferric oxide Fenton catalyst comprises the following steps: firstly preparing high dispersibility nano ferroferric oxide by adopting a coprecipitation method, and then carrying out surface modification on the nano ferroferric oxide by adopting a hydrolysis method. Organic acid salt and a non-ionic surface active agent are added when the coprecipitation method is adopted for preparing ferroferric oxide particles, so that the quantity of inorganic matters deposited on the surfaces of the ferroferric oxide particles is low, enrichment of reaction substrate and charge transfer on the surfaces of the ferroferric oxide particles can be enhanced, good catalytic efficiency can be realized at room temperature in a larger pH range, and the surface modified nano ferroferric oxide Fenton catalyst can be used for advanced oxidation treatment of dye sewage, organic pollutant sewage, pesticide sewage and the like. Therefore, the preparation method of the surface modified nano ferroferric oxide Fenton catalyst has the characteristics of simplicity in operation, mild conditions, adaptability to large-scale preparation and the like, cost for obtaining the product is low, and the obtained product can be widely and more easily popularized.

The invention belongs to the technical field of epoxy resin based chemical crosslinking material preparation, and particularly relates to a diamine addition crosslinking agent and a preparation method thereof, as well as a composition for preparing thermal reversible crosslinking epoxy resin and a composite material of the thermal reversible crosslinking epoxy resin. The structure of the diamine addition crosslinking agent is as shown in the formula (I), wherein R1 is methyl or H, and n is 1-3; and R is non-aromatic radical. The epoxy resin and the composite material prepared from the composition containing the crosslinking agent have all excellent performance of traditional chemical crosslinking epoxy resin at a low temperature, have re-processing forming performance of thermoplastic materials at a high temperature, restore crosslinking characteristics after being cooled, and are called 'thermosetting-thermoplastic' materials. The reversible crosslinking epoxy resin and the composite material thereof have a self-recovery capability, and the performance of the re-processing forming material can be regulated by means of thermal treatment, so that the diamine addition crosslinking agent is applicable to preparation of self-restoring paint, electronic packaging materials, thermal reversible adhesives and the like.

The invention belongs to the field of nano magnetic composite material preparation, and discloses a MXene-magnetic metal composite material and a preparation method thereof. The MXene-magnetic metal composite material is composed of flake MXene and magnetic metal nanoparticles uniformly loaded on the MXene. The preparation method comprises the steps of: dispersing the Mxene in a mixed liquid consisting of ethylene glycol and water, adding a magnetic metal salt into the mixed liquid and stirring the mixture, then adding NaOH into the mixture to adjust a system pH value to 8-14, then adding hydrazine hydrate into the mixture, and stirring the mixture evenly; heating the mixture to 60-120 DEG C and keeping the temperature for 0.2 to 8 h; cooling, separating, washing and drying the mixture toobtain the MXene-magnetic metal composite material. The preparation method adopts the ethylene glycol and water as a solvent and the MXene as a carrier, the magnetic cations are adsorbed on the surface of the MXene selectively and heated at the temperature of 60-120 DEG C, the magnetic cations are gradually reduced to magnetic nanoparticles under the common reducing action of hydrazine hydrate andethylene glycol, and the final prepared MXene-magnetic metal composite material integrates the properties of the MXene and magnetic metal.

The invention relates to the field of synthesis of drug intermediates, in particular to an intermediate of antitumor drug GDC-0449 (vismodegib) and a synthesis method of the intermediate. The synthesis method is characterized by comprising the following steps: with parachlorobenzoic-acid as a raw material, firstly carrying out iodination and then carrying out a rearrangement reaction under the action of diphenylphosphoryl azide; reacting with coupled boronic acid pinacol ester; and finally carrying out coupling reaction with 2-bromopyridine; and removing protecting groups to finally obtain the intermediate of GDC-0449. The preparation method provided by the invention has the following advantages: the raw material is cheap, the reaction conditions are moderate, the yield of each reaction is high, and the total yield is high up to 54.7%; and therefore the preparation method is suitable for large-scale preparation.

The invention belongs to the technical field of material preparation and photocatalysis, and discloses a high-activity graphite-phase carbon nitride material and a preparation method thereof. The preparation method comprises the following steps: forming a self-generated gas atmosphere a gas generated from a precursor by pyrolysis in the high-temperature calcining process under the control on an inert gas, and guiding synthesis of a carbon nitride material, thereby obtaining a flaky porous graphite-phase carbon nitride material. According to the preparation method, after the inert gas is not introduced any longer, a self-generated gas generated from the precursor is relatively uniform at different parts, and the carbon nitride material prepared with the preparation method is uniform in morphology and relatively good in crystal form; due to the escape of the self-generated gas, the material is effectively pored, and thus the specific surface area and the active sites of the material are increased; due to the self-generated gas atmosphere, the polymerization degree of the precursor is reduced, and the obtained carbon nitride material has a relatively large amount of unpolymerized amino or imino groups. The preparation method disclosed by the invention is simple, efficient and low in cost, and the carbon nitride material prepared with the preparation method is excellent in photocatalysis activity and very good in practicability.

The invention relates to a super-dispersion non-noble metal nitrogen-doped MOF double-effect electrocatalyst and a preparation method thereof. The preparation method comprises the following steps of 1) adding a hydroxyl-rich carbon source organic matter and a nitrogen-rich organic matter into a surfactant dispersed solution, and carrying out stirring and mixing; and enabling the carbon-nitrogen source organic matters to be reacted in the solution to obtain a primary precursor; 2) adding a transition metal solution, stirring at a constant temperature and sufficiently chelating with the organicprecursor; 3) putting the object obtained in the step 2) into a high-temperature kettle to carry out hydrothermal crystallization to promote crystals to grow slowly; 4) carrying out centrifuging, washing and drying on the object obtained in the step 3); and 5) carrying out high-temperature carbonization on the object obtained in the step 4) to obtain the catalyst. The catalyst has the advantages that the uniformly dispersed ultrafine metal nanoparticles are embedded and wrapped in a carbon shell, and the carbon layer structure is activated; and the catalyst has rich transition metals and nitrogen-bonded M-N chelating active sites, so that the catalyst stably exists in an acid solution, and has important application value and significance in the fields of fuel cells, water electrolysis andother electro-catalysis.

The invention relates to an oxygen evolution reaction electrocatalyst of a Ruddlesden-Popper layered perovskite-type oxide, the structure general formula of the oxygen evolution reaction electrocatalyst is A3B2O<7-Delta>, wherein A is one or more of rare earth metal ions or alkaline earth metal ions, b is one or more of transition metal ions, 0 is less than or equal to Delta, Delta is less than orequal to 1. The oxygen evolution reaction electrocatalyst disclosed by the invention has excellent oxygen evolution reaction (OER) catalytic performance in an alkaline solution, the activity is superior to those of commercial noble metal oxide RuO2 catalysts. The preparation method of the catalyst is simple to operate and easy for large-scale production, and the catalyst can be widely applied toelectrolysis water, metal-air battery and other energy storage and conversion technologies related to oxygen evolution reaction and has relatively high practical value.

The invention discloses a photoelectrochemical adaptor sensor as well as a preparation method and application thereof. The photoelectrochemical adaptor sensor comprises a conductive glass electrode, wherein the reacting end surface of the conductive glass electrode is modified with a composite membrane consisting of phosphorus hybridization graphite phase carbon nitride nanosheets loading gold nanoparticles; and a specific adaptor probe is self-assembled on the surface of the membrane. The preparation method of the photoelectrochemical adaptor sensor comprises the following step: modifying thephosphorus hybridization graphite phase carbon nitride nanosheets loading the gold nanoparticles and the specific adaptor probe on the reacting end surface of the conductive glass electrode. The sensor disclosed by the invention has the advantages of high stability, long service life, high anti-jamming capability, wide detection range, low detection limit and the like. The preparation method of the photoelectrochemical adaptor sensor has the advantages of simple technology, convenient operation, safety, low cost, no pollution, high production efficiency and the like. The sensor disclosed by the invention can be widely applied to detecting pollutants (such as antibiotics) in mediums such as a water body and a living body and has the advantages of high utilization rate, wide application range, high application value and the like.

The invention provides a respiratory-tract magnetic-resonance spray contrast agent, which is a gadolinium-lipid compound formed from a gadolinium contrast agent and a lipid, wherein the average diameter of the compound is less than 1,000 nm, and the mean value of the Zeta potential of the compound is more than 40 mv. The lipid component is selected from at least one or combination of phospholipids, glycolipids, sterol, cationic lipids, surfactant, amphiphilic polymers, and at least contains a positive-charge lipid component. The invention also provides a method for preparing the respiratory-tract magnetic-resonance spray contrast agent. After the contrast agent is atomized and inhaled, gadolinium is effectively distributed on the surface of far-end respiratory-tract mucosa by utilizing theelectrostatic interaction between positive charges carried by the compound and negative charges on the surface of the respiratory-tract mucosa, and the distribution uniformity of spray drips on the surface of the mucosa by means of the action of the surface activity of the lipid, so that the problem that the gadolinium is only distributed on near-end respiratory tracts, is easy to gather and flows to the lower parts of the respiratory tracts after gadolinium aqueous solution is sprayed is solved, and the surface of the whole respiratory-tract mucosa is completely and clearly shown.

The invention discloses a thin-film solar cell based on an inorganic planar hetero-junction and a preparation method thereof. The solar cell comprises a glass substrate, an FTO layer as the anode, a planar hetero-junction photoactive layer composed of a TiO2 nano-structure compacted thin film and a Sb2S3 mono-crystal bulk single-layer compacted thin film, a polymer PCPDTBT electron blocking layer, a composite hole transport layer composed of PEDOT: PSS and Spiro-MeOTAD, and an Au film layer as the cathode of the solar cell. The inorganic planar hetero-junction thin-film solar cell disclosed by the invention has a spectral response range of 300-750nm. When the photoactive layer of the whole cell is under light, the conversion efficiency of the cell is up to 9.11%. The key photoactive layer material of the solar cell as well as the materials of the electron blocking layer, a hole blocking layer and a buffer layer are prepared through a simple solution method. Therefore, the solar cell has great potential for large-scale industrialization.

The invention discloses conductive aerogel and a preparation method thereof. Coaxial composite micro-nanofibers are adopted as fibers for preparing the aerogel, an insulated macromolecular micro-nanofiber prepared through electrostatic spinning serves as the axis of the coaxial composite micro-nanofibers, and the outer surface of the insulated macromolecular micro-nanofiber is coated with a conductive layer through an in-situ polymerization reaction of a conductive polymer material. The conductive aerogel has the good conductivity, the preparation method of the aerogel is simple, has the universality and is suitable for large-scale preparation, and the types of the conductive aerogel can be greatly increased through the preparation method.

The invention discloses nanometer vanadyl phosphate as well as a preparation method and application thereof. The beta-phase nanometer vanadyl phosphate is of a granular hollow structure; the particle diameter of nanometer vanadyl phosphate is 10-30nm; and the wall thickness of nanometer vanadyl phosphate is 1-5nm. The preparation method disclosed by the invention comprises the steps of: placing a vanadium source and a phosphorus source in a metal atom molar ratio of 1:1 in a pressure vessel, adding a solvent and uniformly mixing, heating to 120-280 DEG C after sealing to carry out solvent thermal reaction for 2-240 hours, filtering, washing and vacuum drying the product to obtain a vanadyl phosphate precursor; and calcining the precursor for 0.5-12 hours at a temperature of 400-900 DEG C, and cooling to room temperature to obtain nanometer vanadyl phosphate. The prepared nanometer vanadyl phosphate is small in size, uniform in particle diameter distribution, good in dispersity and large in specific surface area, simple in the preparation method and available in raw material. The nanometer vanadyl phosphate has very high catalytic activity and good reaction selectivity when being used for catalyzing ammoxidation of methyl aromatics to prepare aromatic nitrile, and reaction temperature is reduced compared with the vanadyl phosphate prepared by adopting a conventional method.

The invention relates to an electrocatalyst with mixed precious metal and perovskite oxides. The electrocatalyst with mixed precious metal and perovskite oxides is characterized in that precious metal and perovskite oxides are mixed mechanically at different ratios so as to prepare an electrode, thereby obtaining the electrocatalyst with high ORR (oxygen reduction reaction) and OER (oxygen evolution reaction); the single precious metal is an excellent oxygen reduction catalyst, but the catalytic oxygen evolution reaction is relatively poor; the perovskite oxides have relatively high catalytic activity to the oxygen evolution reaction, and have very flow catalytic activity to the ORR. Aiming at the situation, the catalyst obtained by the invention has high ORR and OER activity at the same time only by a simple mixing method, and can act as a double-effect oxygen electrode for the fields of integrated recyclable fuel batteries, chargeable metal-air batteries, water electrolysis and the like.

The invention discloses a degradable plastic containing algae protein. The degradable plastic is prepared from the following major raw materials in parts by weight: 80-100 parts of microalgae protein powder, 0-20 parts of starch, 2-10 parts of modifier, 10-30 parts of plasticizer and 1-10 parts of surfactant; the various components are mixed in proportions, put into the plate mold of a press vulcanizer, and subjected to hot-pressing and cold-pressing processes, and finally, the degradable plastic containing the algae protein as the major component is obtained. The invention provides a treatment method for changing algae into things of value for the algae bloom burst period; as a result, the treatment method is advantageous for environmental protection.

The present invention discloses a method for simultaneously preparing hyperin and isorhammetin-3-O-galactoside control products. Said method includes the following steps: (1) placing Chinese medicinal material evodia in a container, adding solvent to make extraction with reflux; (2) filtering evodia extract, reduced pressure concentrating to obtain extractum, adding water to dissolve it, then successively using petroleum ether, chloroform and ethyl acetate to make extraction; (3). using column chromatographic process to purify the ethyl acetate extracted portion twice; and (4). combining chromatographic eluents, concentrating, recrystallizing so as to obtain the invented two control products of hyperin and isorhamnetin-3-O-galactoside. Said invention is simple, and can simultaneously prepare hyperin and isorhamnetin-3-O-galactoside pure products whose purity can be above 98%.

The invention discloses a preparation method of a positive electrode catalyst Mn2O3 of a lithium carbon dioxide battery. The method comprises the following steps of dissolving PVP into absolute ethylalcohol and then adding Mn(CH3COO)2.4H2O; carrying out magnetic stirring and reflux reaction at 40-80 DEG C to obtain a white precipitation product and carrying out vacuum drying to obtain a powdery precursor; and carrying out heat preservation in a tube furnace at 500-700 DEG C for 2-4h to obtain the positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery. The positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery is used for preparing a positive electrode of the lithium carbon dioxide battery. The materials are easy to obtain, and the method is simple in preparation process and technology, low in cost and friendly to environment.