25results about How to "No heating required" patented technology

The invention provides a preparation method of a UTSA-16 structure metal organic framework, which comprises the following steps: sequentially adding a metal salt and potassium citrate into an auxiliary solvent, adding an alkaline solution, dissolving, and treating in a ball milling manner to obtain a reaction solution; centrifuging the reaction liquid, collecting a solid part, washing with diethyl ether, soaking with methanol, and drying to obtain a precursor; and activating the precursor at the temperature of 80-90 DEG C, and removing the solvent in the pore channels to obtain the metal organic framework with the UTSA-16 structure. According to the invention, the UTSA-16 is prepared by a solvent-assisted ball milling method, the problems of high energy consumption, long time and serious pollution in the previous preparation process of the UTSA-16 are solved, and the UTSA-16 can be formed under a milder condition and within a shorter time by the method; the reaction is carried out in a ball mill, the maximum synthesis amount can be enlarged along with the scale of the ball mill, the reaction takes 3 hours, heating is not needed, and the method can be put into factories for large-scale production.

The present invention relates to the technical field of hydrogen safety protection, and discloses a flexible thin-film hydrogen-sensitive sensor and a hydrogen leakage monitoring and protection system. The flexible thin-film hydrogen-sensitive sensor includes a proton exchange membrane and a plurality of hydrogen-sensitive sensing elements arranged in an array on the proton exchange membrane. Each hydrogen-sensitive sensing element is composed of a counter electrode and a sensing electrode correspondingly arranged on both sides of the proton exchange membrane, and a catalytic layer is coated on the proton exchange membrane. The hydrogen leakage monitoring and protection system includes the above-mentioned flexible thin-film hydrogen-sensitive sensor. The flexible thin-film hydrogen-sensitive sensor is an array of electrochemical hydrogen-sensitive sensing elements, and the spacing and number of hydrogen-sensitive sensing elements are determined according to the required positioning accuracy. When hydrogen leaks, the hydrogen leak is quickly and accurately located according to the voltage data of the sensing element and the time data of the voltage generation. The present invention utilizes the principle of electrochemical reaction to catalyze the hydrogen to be detected to generate an electrical signal, and the electrical signal measurement response time is below the millisecond level, thereby achieving a rapid response to hydrogen leaks at low concentrations.

The invention provides a ferronickel-based oxygen evolution electrode and a preparation method thereof based on interface confinement. The preparation method of the ferronickel-based oxygen evolution electrode comprises the following steps: preparing a precursor solution containing ferrous ions and ferric ions; the foamed nickel substrate is cleaned; the cleaned foamed nickel is tightly attached to the surface of the bottom of the reaction container, the foamed nickel is immersed in the precursor solution, under the room-temperature standing condition, divalent and trivalent iron ions are induced to be subjected to a synergistic hydrolysis and coprecipitation reaction through a physical interface confinement space formed by an attached interface, and the nickel-based composite material is obtained. Therefore, a high-activity and high-uniformity nickel-iron-based (oxygen) hydroxide catalyst layer (DIC-NiFeOOH / NF) is grown on the surface of the foamed nickel in situ. The method is simple in process, green and energy-saving, and the prepared nickel-iron-based oxygen evolution electrode shows excellent performance in oxygen evolution reaction and anion exchange membrane water electrolysis.

The present application relates to the preparation method of carboxyl endocyclic anhydride and the preparation product. The preparation method of compound of formula (II) comprises the following steps: reacting compound of formula (I) with a cyclization reagent to generate compound of formula (II) and acid, and using an epoxide compound as an acid scavenger. The present application is a new synthesis method of carboxyl endocyclic anhydride, which has the advantages of low cost, low requirement for reagents, site and equipment, mild conditions, wide substrate application range, high functional group tolerance, recyclable solvent and other high value-added by-products in the synthesis route, less waste liquid discharge, easy scale-up, high industrial and academic value, and the like, and can greatly promote the rapid large-scale production and application of polyamino acid, polyhydroxy acid (polyester), polymercaptan acid (polythioester) and the like.

The invention discloses a metal oxide embedded carbon nanotube nano flexoelectric material and a preparation method and application thereof, and the preparation method comprises the following steps: opening a carbon nanotube to obtain an opened carbon nanotube; mixing the open carbon nanotube, hydrolytic salt and water to obtain a hydrolytic salt carbon nanotube solution; carrying out vacuum filtration on the hydrolytic salt carbon nanotube solution, and drying to obtain a hydrolytic salt embedded carbon nanotube material; and carrying out annealing treatment on the hydrolyzed salt embedded carbon nanotube material to obtain the metal oxide embedded carbon nanotube nano flexoelectric material. According to the preparation method provided by the invention, the carbon nanotube confinement space is utilized, the preparation of the nanoscale built-in stress gradient flexural dielectric material is realized, the geometric necessary dislocation density is increased by utilizing the size effect, the flexoelectric effect is amplified, and the application of flexoelectricity in the aspects of organic matter catalytic degradation and energy collection is improved.

The application discloses prednisolone sodium phosphate oral solution and a normal-temperature preparation method thereof. The oral solution contains the following components per 1000ml: prednisolone sodium phosphate (calculated as prednisolone) 5.0g, maltitol 250-450g, sodium benzoate 1.0-3.0g, disodium edetate 0.5-2.0g, disodium hydrogen phosphate 2.0-8.0g, sodium dihydrogen phosphate 1.0-5.0g, essence 1.0-5.0g, and purified water is added to reach a constant volume, and the pH value is 7.0-8.0. The chemical stability of the preparation is significantly improved through the synergistic stabilizing effect of disodium edetate and phosphate buffer pair; the taste is significantly improved, and the drug compliance of children is improved through the optimization of maltitol as a child-friendly sweetener and the synergistic taste masking of essence; the destruction of active ingredients by high temperature is avoided, and the production process is simplified through the adoption of sodium benzoate and the normal-temperature preparation process. The preparation process is simple, the quality is stable, and the preparation is suitable for industrial production.

The invention relates to lemon-flavored antibacterial atomized liquid as well as a preparation method and application thereof. The lemon-flavored antibacterial atomized liquid comprises the following components: 0.6-6 parts by weight of a lemon-flavored additive; 1-30 parts by weight of a Chinese herbal medicine extract; 0-5 parts by weight of a flavoring agent; 30 to 110 parts by weight of a solvent; the lemon flavor additive is selected from at least one of verbena essential oil and lemon grass essential oil; according to the invention, the natural plant essential oil verbena essential oil and / or lemongrass essential oil is used as the lemon flavor additive, so that the electronic atomized liquid has lemon flavor and antibacterial effect, and the modification and improvement of the flavor of the Chinese herbal medicine atomized liquid are achieved; the problems that the Chinese herbal medicine extract cannot be accepted by patients and is refused to take due to strong smell of Chinese herbal medicines are solved. In addition, the electronic atomized liquid is light in grass fragrance and medicine fragrance, and rich in faint scent, fruit fragrance and sweet fragrance, the favor of a user can be obtained more easily, and therefore the sucking and taking willingness is increased.

The invention relates to a method for preparing low-iron quartz sand and high-quality feldspar from lepidolite tailings. The method is characterized by comprising the following steps: (1) grinding pegmatite type lepidolite tailings, and screening to obtain mineral particles with the particle size of less than or equal to 0.35 mm; (2) sequentially carrying out medium magnetic separation, high-intensity magnetic separation and high-intensity magnetic separation on the-0.35 mm minerals to obtain magnetic separation fine sand and magnetic separation tailings; (3) scrubbing the magnetic separation fine sand to obtain desliming fine sand with higher purity; (4) the desliming fine sand is subjected to three-section flotation, the ore pulp concentration of first-section flotation is 35%-40%, H2SO4 serves as a pH adjusting agent, the pH is adjusted to 2-5, and mixed amine serves as a collecting agent of 0.10-0.15 kg / t; the ore pulp concentration of the second-stage flotation is 25%-30%, H2SO4 is used as a pH regulator, the pH is regulated to be 1-3, and an anion and cation collecting agent is 0.10-0.15 kg / t; the ore pulp concentration of the third-section flotation is 25%-30%, H2SO4 is used as a pH regulator, the pH is regulated to 1-3, the use amount of an anion and cation collecting agent is 1.25-2.25 kg / t, and feldspar and quartz fine sand are obtained. The method has the advantages that the prepared quartz fine sand meets the index requirements of quartz for optical glass or photovoltaic glass, and meanwhile, feldspar products for high-whiteness glaze and feldspar products for float glass are obtained.

The invention belongs to the field of coating materials, and relates to hyperbranched resin and a preparation method thereof, and application of the hyperbranched resin in preparation of an underwater curable epoxy composition. In the general structural formula of the hyperbranched resin # imgabs0 #, m is a positive integer of 2 or more, and n is any positive integer. According to the invention, molecular modification is carried out on vegetable tannin by utilizing click chemistry and nucleophilic substitution, intrinsic toughness is endowed, and hyperbranched resin containing dozens of epoxy groups is obtained. According to the present invention, the potential compatibility problem of the external toughening agent can be eradicated, and the ultra-dense network having 625 cross-linking nodes can be formed theoretically after the curing so as to provide the excellent medium resistance of the composition; the hyperbranched resin and the composition thereof are suitable for various-grade corrosion environments, low surface treatment, underwater thick coating and other scene requirements, and can be used for corrosion protection of inland and ocean facilities and equipment.

The invention provides a low-toxicity environment-friendly neodymium-iron-boron magnet surface magnetic material glue removal liquid and a removal process. The removal liquid comprises the following components in parts by mass: 7 parts of dimethyl carbonate and 3 parts of acetone. The removal process comprises the following steps: S1, washing a to-be-treated magnet with deionized water and putting the to-be-treated magnet into a hollow tool basket; s2, removing liquid is added into an ultrasonic cleaning machine, the hollowed-out tool basket containing the to-be-treated magnet is completely immersed into the removing liquid, the ultrasonic cleaning machine is started to conduct degumming cleaning on the to-be-treated magnet to form a treated magnet, the degassing and frequency conversion functions of the ultrasonic cleaning machine are started, the ultrasonic frequency ranges from 35 kHz to 45 kHz, the ultrasonic power ranges from 300 W to 500 W, and the magnet to be treated is obtained; the cleaning time ranges from 15 min to 25 min, and the cleaning temperature ranges from 25 DEG C to 30 DEG C; s3, the treated magnet is washed with deionized water; and S4, drying treatment is conducted on the treated magnet through drying equipment. The degumming device can improve the degumming treatment efficiency.

The invention provides a high-purity fine-grain tantalum target material and a preparation method thereof, and relates to the technical field of preparation of refractory metal target materials, and the preparation method comprises the following steps: preparation of tantalum ingots, first forging of blanks, first heat treatment, second forging of blanks, second heat treatment, rolling, third heat treatment and machining. According to the preparation method, firstly, a tantalum strip is smelted into a tantalum cast ingot, then the tantalum cast ingot is sequentially subjected to forging, rolling, heat treatment and machining, the pure tantalum target material is finally obtained, crystalline grains in tantalum are fully crushed and refined through large-deformation forging and pressing deformation, the phenomenon that local crystalline grains are not uniform is further reduced, and therefore the equiaxed crystal tantalum target material with the crystalline grain size ranging from 15 micrometers to 25 micrometers is obtained; and the grains can be further refined while the structure uniformity is ensured, and the requirement of coating on the high-purity fine-grain tantalum target material is met.

This invention discloses a method for automatic gyroscope drift compensation in a high-precision optical axis motion control device, belonging to the field of servo turntable control technology. This invention uses a three-axis fiber optic gyroscope mounted on the pitch axis to sense spatial angular velocity. Fiber optic gyroscopes eliminate errors caused by friction from rotating mechanical parts, resulting in high angular velocity measurement accuracy and a wide range of measurable angular velocities. The laser gyroscope used in this invention has a velocity measurement range of ±600° / s and a minimum sensitive angular velocity of less than ±0.001° / s. Fiber optic gyroscopes have a wide operating temperature range, from -50℃ to 60℃, requiring no heating, and exhibit short start-up time and fast system response. This invention proposes a method for automatic gyroscope drift compensation in a high-precision optical axis motion control device, employing a two-stage coarse-fine compensation method to achieve rapid compensation for fiber optic gyroscope drift. It first performs a coarse compensation, followed by up to five (the number of times is configurable) fine compensations. The algorithm is simple and efficient, with short compensation time, and does not consume significant CPU resources for complex calculations, thus improving optical axis stability.

The application discloses a method for constructing S-N bond by electrochemical oxidation of glycosyl mercaptan and amine compound to synthesize glycosyl sulfenamide, and belongs to the technical field of drug intermediate synthesis. The method uses an organic solution containing glycosyl mercaptan, amine compound and electrolyte salt as an electrolyte, places an anode and a cathode in the electrolyte, passes direct current, and performs electrochemical reaction to obtain a glycosyl sulfenamide compound. The method has strong reaction universality, high yield of target product, and is realized by one-step chemical reaction, and has mild reaction conditions and does not need any transition metal catalyst.

The invention belongs to the technical field of cleaning agents, and particularly relates to a bio-based heavy oil stain cleaning agent and a preparation method thereof.The bio-based heavy oil stain cleaning agent is prepared from, by weight, 5-8 parts of N, N-dimethyl-9-decyl amide and 3-5 parts of isodecanol polyoxyethylene ether. N-dimethyl-9-decyl amide, isodecanol polyoxyethylene ether and hexyl D-glucoside APG06 are used as solubilizers of the cleaning agent, the purpose of efficient cleaning is achieved through the dissolution effect, the permeation effect and the emulsification effect, raw materials in the preparation components are environmentally friendly, no harm is caused to the human body and the environment when the cleaning agent is used, and the cleaning agent is environmentally friendly. The cleaning agent can be used at normal temperature, does not need to be heated and is convenient to use, MET-10U contained in the nonionic active surface agent has extremely high dissolving capacity for grease, the KB value of N, N-dimethyl-9-decenamide is larger than 1000, MET-10U is easy to biodegrade and environmentally friendly, and the bio-renewable carbon index (BCI) reaches 75%.

The invention discloses a high-frequency surface acoustic wave dimethyl methylphosphonate sensor and a preparation method thereof, and belongs to the technical field of gas sensors. The sensor comprises a piezoelectric substrate, an interdigital transducer arranged on the piezoelectric substrate and a gas sensitive layer formed on the surface of the interdigital transducer, the gas sensitive layer comprises a 11-mercaptoundecanoic acid material layer formed on the surface of the interdigital transducer and a zirconium-based MOF material layer formed on the 11-mercaptoundecanoic acid material layer. The invention also provides a preparation method of the sensor. The 11-mercaptoundecanoic acid and the zirconium-based MOF material layer are modified on the surface of a high-frequency surface acoustic wave device layer by layer through a molecular self-assembly technology. The sensor disclosed by the invention has high sensitivity, quick response and good repeatability on dimethyl methylphosphonate gas, is simple in preparation process and good in repeatability, and has important application value in the field of gas sensing.

The application relates to an optical engine covering various transmission distances and packaging forms and a manufacturing method thereof, and belongs to the technical field of optical fiber communication; through a modular architecture of a general subboard+adaptation motherboard, decoupling of core functions of the optical engine and physical packaging forms is realized, a same subboard can be adapted to various motherboards, subboards of different transmission distances can share a same production line, and research and development and production costs are greatly reduced. A differentiated heat management isolation layer is innovatively introduced between the subboard and the motherboard, heat of high-heat devices is quickly conducted away, heat-sensitive devices are effectively heat-insulated, the contradiction between heat dissipation and heat crosstalk is solved in limited space, and temperature uniformity superior to that of a traditional integrated design is realized. An optoelectronic hybrid interface is introduced, super-high-speed data flow is converted into optical signals for transmission between the subboard and the motherboard, parasitic effects of electrical bonding wires are completely eliminated, and the optical engine can support a next-generation 224Gbps and above rate standard.

The application provides a poly-sec-amines, a preparation method and application thereof. The poly-sec-amines have long aliphatic chain segments, good flexibility and excellent hydrophobicity. Meanwhile, hydroxyl groups are introduced into the molecules, so that the curing process can be greatly accelerated when the poly-sec-amines are used as epoxy resin curing agents, and the curing speed of the epoxy resin is obviously improved. The epoxy resin composition containing the poly-sec-amines can not only realize rapid curing, but also has high surface gloss and good flexibility, so as to meet the needs of the paint industry.

The present invention belongs to the field of pharmaceutical chemistry and fine chemical synthesis, and relates to a method for light-induced continuous synthesis of piperidones, wherein the compound represented by formula I, the compound represented by formula II, a base and an organic photocatalyst are dissolved in an organic solvent to obtain a homogeneous solution; the obtained homogeneous solution is pumped into a microchannel reaction device provided with a light source for reaction, and the piperidone compound represented by formula III is obtained. In the present invention, indole halogen is used as an initiator, and under the induction of visible light, a free radical is formed, and then a cyclization reaction occurs with an alkene-alkyne substance. Compared with the prior art, the present invention adopts organic photocatalyst catalysis, is green and efficient, has no metal residue, and has a wide application prospect in the synthesis of pharmaceutical products.

The invention relates to a synthesis method of a far-end amino alcohol compound, which comprises the following steps: electrolyzing a cyclic amine compound shown as a formula (I) to obtain the far-end amino alcohol compound shown as a formula (II). According to the method, the cyclic amine and (high) proline peptide compounds are directly electrolyzed by adopting an electrochemical method, so that the far-end amino alcohol compounds can be obtained, a reaction precursor does not need to be prepared in advance, the use of a noble metal catalyst and a stoichiometric oxidant is avoided, the generation of chemical wastes is avoided, and the atom economy is favorably realized. The method has the advantages of simple operation, high product purity, easy purification, high efficiency and yield, low production cost, mild reaction conditions and no need of inert gas protection. And water is used as a green solvent and a hydroxyl source, so that the reaction system is more green, environment-friendly, safe, economical, energy-saving and environment-friendly, and industrial production is more favorably realized. # imgabs0 #

The present application relates to modified seaweed residue-based filter membrane and its preparation and application for removing pollutants, wherein industrial waste seaweed residue is used as raw material, and graphene oxide is used as modifier, after mixing seaweed residue and graphene oxide and fully stirring, ZrO2 nanoparticles are biomimetic mineralized on the graphene oxide loaded seaweed residue hybrid, and the functional GO / seaweed residue-ZrO2 hybrid membrane is prepared by vacuum filtration method, the composite membrane has good adsorption and removal performance on fluoride, heavy metal ions and radioactive elements in water body, and the composite membrane also has excellent antibacterial effect.

The invention discloses a non-cured rubber asphalt waterproof coating and a preparation method thereof. The waterproof coating comprises a component A and a component B, the component A is prepared from asphalt, liquid butadiene-styrene rubber, turpentine, rosin, castor oil, a viscosity reducer, benzoyl peroxide, filler and a defoaming agent; and the component B comprises castor oil, N, N-dimethyl p-benzylamine and a terminating agent. Asphalt and modified asphalt do not need to be heated, and heating is not needed in the preparation process of the non-cured rubber asphalt waterproof coating. The component A and the component B of the non-cured rubber asphalt waterproof coating are in a liquid state at normal temperature and are uniformly stirred in proportion before construction, and heating is not needed; a redox system is introduced, the reaction is catalyzed at normal temperature, and heating is not needed in the reaction process.

The invention discloses a rare earth metal coordination photo-graft polymer metal tag for mass spectrometry flow cytometry and a preparation method thereof, photo-initiation monomers are polymerized to a main chain, active ester monomers are polymerized to a branched chain through photo-initiation, DOTA coordination groups are coupled to the branched chain, and the rare earth metal coordination photo-graft polymer metal tag for mass spectrometry flow cytometry is obtained. The number of DOTA coordination groups on a single polymer is greatly increased, so that the number of metal ions capable of being coordinated on a single label can be increased, and the mass spectrum flow type detection sensitivity is improved; the active ester monomer is polymerized through photo-initiation, the reaction time is short, heating is not needed, the preparation is faster, simpler and more convenient, and the water solubility of the polymer label is greatly improved through introduction of an ethylene glycol structural unit; the raw materials for preparing the photo-graft polymer are all domestic, so that the use cost of the mass spectrum flow technique can be greatly reduced, and the application of the mass spectrum flow technique in the fields of clinic, biomedical examination and life science is promoted.

This invention proposes a method for recovering potato protein based on dielectrophoretic microfluidic technology, belonging to the field of plant protein separation and recovery technology. This invention addresses the problems of existing dielectrophoretic microfluidic technologies, which are mostly designed for pure protein systems, have poor adaptability to complex wastewater, and have limited enrichment capacity for low-concentration, small-molecule proteins. The steps of this invention include: S1: frequency response and force analysis of potato protein; S2: separation chip simulation analysis; S3: introducing starch wastewater into a microchannel and applying an AC voltage to the electrode structure according to the AC electric field parameters, causing the potato protein to migrate directionally under the action of dielectrophoretic force in a non-uniform electric field, thus separating it from other particles; S4: collecting the directionally migrated potato protein to achieve recovery, and evaluating the recovery effect of the potato protein.

The application discloses a kind of quick gelation conductive hydrogel and its preparation method and application, the preparation method, including the following steps: diatomite and tannic acid are dissolved in water, stirring preparation tannic acid coated diatomite solution;Zinc chloride is added to the tannic acid coated diatomite solution, stirring is uniform, then acrylic acid and 1-vinyl-3-carboxy imidazole ionic liquid are stirred uniformly;Then initiator and crosslinking agent are added, immediately pour into mould after stirring is uniform, carry out quick gelation reaction in 10~30s, namely obtain.The raw material of hydrogel provided by the application is low in toxicity, high in safety, and the preparation method is very simple, without heating, and the gelation time is very short, suitable for industrial production;The obtained hydrogel has good conductivity, repeated adhesion and low temperature resistance, can be applied as flexible sensor, and has wide application prospect.

The nodular cast iron jacking pipe with the multi-layer composite structure comprises a pipe body, a concrete layer and a protective layer are sequentially arranged on the outer wall of the pipe body from inside to outside, and the protective layer is a continuous compact layer formed through a winding process. The nodular cast iron jacking pipe is high in strength, good in impact resistance and environmental adaptability, capable of effectively resisting various stresses in transportation, construction and extreme use environments and capable of preventing the cracking phenomenon.