35results about How to "Not easy to enrich" patented technology

The invention discloses a fluorine-containing polymer and a preparation method thereof. One or more fluorinated monomers is / are subjected to liquid polymerization by using polyfluothane oxy ether acid as an emulsifier to obtain the fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.

The invention discloses a quasi-solid-state lithium battery and a preparation method thereof. The quasi-solid-state lithium battery comprises a negative electrode, a positive electrode and a diaphragm, and also comprises a quasi-solid-state electrolyte dispersed among the surfaces of the negative electrode, the positive electrode and the diaphragm and gaps among the negative electrode, the positive electrode and the diaphragm. The quasi-solid-state electrolyte comprises a polymer phase, and a ceramic electrolyte, a lithium salt and a flame-retardant organic solvent which are dispersed in the polymer phase, wherein the polymer phase is formed by in-situ polymerization of composite acrylate monomers; and the composite acrylate monomer comprises a star-shaped acrylate monomer and a chain-shaped acrylate monomer. According to the quasi-solid-state lithium battery disclosed by the invention, the problem that the safety of the battery is reduced by liquid electrolyte is solved, and the problem that the cycle performance of the battery is reduced due to dissolution of solid polymer electrolyte is also avoided. Therefore, the quasi-solid-state lithium battery has excellent safety performance, high conductivity and excellent cycling stability.

The invention discloses a method suitable for preparing fluorine-containing polymer free from perfluorooctanoic acid or perfluorooctane sulfonate. The method comprises the following step: carrying out an aqueous emulsion polymerization on one or more fluorinated monomers by taking polyfluoroalkoxyl ether acid as an emulsifier, wherein the prepared fluorine-containing polymer is free from perfluorooctanoic acid or perfluorooctane sulfonate, and the polyfluoroalkoxyl ether acid is a polyfluoroalkoxyl ether acid emulsifier with halogen or hydrogen. The technical scheme mainly refers to the following three aspects in modification: (1) the method which selects polyfluoroalkoxyl ether acid or salt thereof to replace PFOA / PFOS as the fluorine-containing emulsifier can be effectively applied to aqueous emulsion polymerization of the fluorinated monomers; (2) the prepared fluorine-containing polymer is free from PFOA / PFOS so as to satisfy the environmental requirements; and (3) the method meets the cost accounting and can greatly improve the single-kettle output of the equipment without increasing the production equipment and personnel, and meanwhile, the method further can improve production indexes such as polymerization time and polymerization time productivity.

The invention discloses a method for high-efficiency preparation of a Maillard reaction intermediate by a low-temperature synthesis-decompression co-boiling dewatering coupling technology. The method comprises the following steps of: after heating an aqueous solution of amino acid and reducing sugar for a period of time, rapidly reducing air pressure to be below 40mbar for dewatering under the same temperature, and when no fraction flows out, restoring the system to normal temperature and normal pressure; adding food-grade alcohol into obtained dry materials, fully mixing, then carrying out decompressed evaporation and obtaining a solid Maillard reaction intermediate product. Compared with the traditional method for preparing the intermediate by heating and returning of methanol, the method disclosed by the invention has the advantages that the production cost is greatly reduced, the green-scientific-sustainable industrial design concept is met, the obtained Maillard reaction intermediate is higher in conversion rate, has stronger eating safety, and can be directly applied to foods as a food additive. Compared with the water-phase variable-temperature Maillard reaction technology, the method disclosed by the invention has the advantages that the intermediate conversion rate is increased by 370.0%, the innovation is stronger and the progressiveness is obvious.

The invention relates to a hyperstable monodisperse fluorescent magnetic nano probe and preparation and application thereof. The fluorescent magnetic nano probe comprises a carrier and a light-sensitive agent, wherein the carrier is composed of carboxylated ferriferrous oxide magnetic nano particles, PEG and target molecules, and the light-sensitive agent is loaded on the carrier. The preparation method includes the specific steps that firstly, ascorbic acid is placed in an ferric salt solution, the pH value of the solution is adjusted to be 9-12, stirring and hydrothermal reaction are conducted, and an MNPs-COOH dispersion solution is obtained; secondly, the MNPs-COOH dispersion solution is centrifuged, then carboxyl groups of the MNPs-COOH dispersion solution are activated, PEG is added, mixing reaction is conducted, and an MNPs-PEG dispersion solution is obtained; thirdly, activated target molecules are added into and mixed with the MNPs-PEG dispersion solution for reaction, and an MNPs-PEG dispersion solution with the target molecules is obtained; fourthly, the MNPs-PEG dispersion solution with the target molecules and the light-sensitive agent solution are stirred and mixed and react, and a target product is obtained. The nano probe is used for dual-mode tomography in animal bodies. Compared with the prior art, the hyperstable monodisperse fluorescent magnetic nano probe has the advantages that targeting efficiency is high, residence time on tumor portions is long, and the preparation technology is simple.

The invention provides a production method of float glass. The method comprises the following steps: melting glass to obtain molten glass; adding a tin bath additive to molten tin at a tin bath constriction section at 650-750 DEG C; adding the molten glass to the tin bath to obtain a glass tape; and annealing the glass tape to obtain the float glass, wherein the tin bath additive is an iron-tin monotectic or hypomonotectic alloy with the mass percentage content of tin of 18-48.8% and the melting point of 1130-1400DEG C. The melting point of tin is lower than that of iron, the addition of a proper amount of tin makes the tin bath additive have a low melting point, and the temperature of the molten tin does not violently decrease when the tin bath additive is added to the molten tin in the tin bath, so bubbles are avoided. A ratio of tin to iron is proper, so after the tin bath additive is added to the molten tin, local enrichment of iron is unlikely, and bubbles can also be avoided. The use of the tin bath additive in the invention is helpful to obtain the high-quality float glass with few bubbles and small tin permeability.

The invention discloses a method for starting A2N two-stage SBR denitrifying phosphorus removal, and belongs to the field of municipal sewage treatment. The invention aims to solve the problems that in the starting process of denitrifying phosphorus removal in the prior art, the growth rate of denitrifying phosphorus removal bacteria is low, and has poor competitive power as compared with aerobic phosphorus-accumulating bacteria, so that nitrate nitrogen is required to be added for enrichment, the starting is difficult, and the cost is increased; and that direct starting of denitrifying phosphorus removal using domestic wastewater requires long acclimation time, and the sludge concentration is greatly reduced due to elutriation. According to the invention, aerobic phosphorus-accumulating bacteria and nitrifying bacteria are respectively cultivated and mixed uniformly according to the mass ratio of 2: 1; the aerobic running strengthens the nitrification-denitrification effect until the oxidation rate of ammonia nitrogen reaches more than 90%, the removal ratio of COD reaches more than 75%, 1 / 3 of the volume of the sludge is separated to enter into another reactor. The original reactor can be used as a denitrifying phosphorus removal reactor, and the two SBR reactors are operated in an A2N mode. By using the method provided by the invention, the starting speed of denitrifying phosphorus removal using actual domestic wastewater is fast, the sludge concentration after starting is high, and nitrate nitrogen is not required to be added during the starting period.

The invention discloses a fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid. One or more fluorinated monomers is / are subjected to liquid polymerization by using polyfluothane oxy ether acid as an emulsifier to obtain the fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.

The invention relates to a hyperstable monodisperse fluorescent magnetic diagnosis and treatment nanoprobe and a preparation method and application thereof. The nanoprobe comprises magnetic nano particles coating polyethylene glycol PEG and a CaCO3 coating layer doped with a photosensitizer, wherein a mass ratio of the magnetic nano particles to the CaCO3 coating layer is 10 to (1 to 3), and the load of the photosensitizer is 8.9-10.3 wt%; ascorbic acid is placed in an iron salt solution, a solution pH is adjusted to be 9 to 12, and through hydrothermal reaction, magnetic nano particle dispersion liquid is obtained; CaCl2 and ICG are added into the magnetic nano particle dispersion liquid, reaction is carried out while stirring, and then Na2CO3 and ICG are added for reaction for 24 hours to obtain a target product. The nanoprobe is used for bimodal imaging in an animal body, and has the advantages that blood circulation time is long, tumor location retention time is long, the medicinetargeted delivery efficiency is high, a preparation technology is simple, and the like.

The invention discloses a circulating reflux device for an oil-containing emulsified liquid. The circulating reflux device comprises an ultrafiltration circulating tank, an ultrafiltration circulating pump, an ultrafiltration washing tank and an ultrafiltration membrane pipe rack, wherein a circulating liquid outlet pipe is arranged at the bottom of the ultrafiltration circulating tank and is connected to the ultrafiltration membrane pipe rack through the ultrafiltration circulating pump; two branch division pipes are arranged at the tail part of the ultrafiltration membrane pipe rack and are respectively connected to the ultrafiltration washing tank and a circulating liquid inlet pipe which is connected to the upper part of the ultrafiltration circulating tank; a liquid outlet of the circulating liquid inlet pipe is fixedly mounted in a cylindrical shell of the ultrafiltration circulating tank in a tangential direction. According to the circulating reflux device, water is suctioned from one side at the bottom of the circular ultrafiltration circulating tank by virtue of the ultrafiltration circulating pump, and the emulsified liquid which is ultrafiltered and concentrated enters the circulating tank from the tangential direction at the other side of the ultrafiltration circulating tank at the same time, so that the emulsified liquid is circulated at a high speed in the tank body, i.e., the emulsified liquid basically cannot be enriched and stickily bonded in the ultrafiltration circulating tank; meanwhile, the circulating liquid can be stirred well, so that the high oil removing efficiency and the high continuous production efficiency of the whole device are realized.

The invention discloses a fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid. One or more fluorinated monomers is / are subjected to liquid polymerization by using polyfluothane oxy ether acid as an emulsifier to obtain the fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.

The invention discloses cubic strontium sodium niobate red fluorescent powder and a preparation method thereof. The preparation method comprises the following steps that SrCO3 and Nb2O5 are respectively weighed as raw materials according to a mol ratio of (0.45 to 0.6):1; the raw materials are put into a mortar and are ground at room temperature; after being sufficiently mixed, the raw materials are placed for use; NaCl is weighed as fused salt according to the ratio of the total mass of the prepared SrCO3 and Nb2O5 to the mass of NaCl is 1:(3 to 9); the fused salt and the raw materials weighed in the step (1) are mixed and are ground at the room temperature, so that the raw materials and the fused salt are uniformly mixed to obtain mixed powder. The cubic strontium sodium niobate powder with high phase purity, good dispersibility and uniform grain diameter is prepared by a fused salt method. Compared with other methods, the fused salt method has the advantages that the operation is easy; the granularity is controllable; the crystal morphology is good; the synthesis period short, and the like. The method is suitable for preparing uniformly dispersed powder with special morphology or regular shape. Because of the growth mechanism characteristic of the method, the synthesized powder is complete to crystallize and has few defects; the method is very suitable for synthesizing powder with the requirement of few defects.

The invention relates to the field of anti-tumour vaccines, and discloses an anti-tumour vaccine molecule, and a preparation method and application thereof. The anti-tumour vaccine molecule in the invention has a structure shown as a formula (I); in the formula (I), A is an adjuvant; B is an antigen; furthermore, m A are covalently connected with the protein through covalent connecting arms respectively; and n B are covalently connected with the protein through covalent connecting arms respectively. The anti-tumour vaccine disclosed by the invention is a new anti-tumour molecule, is good in immune performance, can generate an IgG antibody with relatively high titer and relatively strong cellular immunity, is good in thermal stability, and is easy to store and transport. A<m>-protein-B<n> is of formula (I).

The invention discloses a LED lamp circuit board comprises a heat radiating metal substrate, an insulating layer which covers the heat radiating substrate, a copper sheet which covers the insulating layer, and an LED above the copper sheet. The copper sheet forms a printed circuit through etching, and thus the bottom of an LED chip and the heat radiating substrate are in close contact. The heat generated by the LED chip can be directly transmitted to the heat radiating metal substrate, the possibility of the gathering of the heat of the LED chip is little, the heat is radiated rapidly, thus the luminous efficiency of the LED is high, and the service life of the LED is long.

The invention discloses an organic medicinal fertilizer with antibacterial and anthelmintic activities and a preparation method thereof. The active organic fertilizer contains 10-20 parts of Aconitum, 5-10 parts of Liwu, 4-8 parts of Artemisia chinensis, 10-15 parts of chamaejasma, 20-30 parts of Oxytropis, 2-3 parts of Drunken Horse Grass, and 5- 10 parts, 3-8 parts of Artemisia chrysanthemum stems, leaves, seeds, 50-60 parts of mushroom dregs, 10-20 parts of cottonseed meal, 5-10 parts of rice husks, crush the raw materials to replenish water, and after solid material microwave technology treatment, add According to 80g / T to 120g / T of active biological complex bacteria for composting and fermentation, the active biological complex bacteria are prepared by directly mixing Bacillus jelly-like, Bacillus megaterium, Bacillus subtilis, Glomus moses and Glomus terrestriale Antibacterial active biological organic fertilizer. The organic medicinal fertilizer provided by the invention contains antibacterial and anthelmintic components and an organic medicinal fertilizer with active organisms, and has wide application value.

The invention discloses a petal-shaped microsphere molybdenum disulfide composite carbon material loaded Pd metal catalyst and a preparation method thereof. The composite material of petal-shaped microsphere molybdenum disulfide and carbon black is firstly prepared by a microwave-assisted method; NaBH 4 The liquid-phase reduction method reduces Pd ions to Pd particles, which are loaded on the composite support of petal-shaped microspheres of molybdenum disulfide and carbon black, thereby preparing a Pd-based catalyst, which is used as a fuel cell anode catalyst for ethylene disulfide Alcohols undergo electrocatalytic oxidation. The preparation process of this method is simple, and the petal-shaped microsphere MoS can be prepared 2 Composite carbon materials and loading Pd metal on MoS 2 A Pd-based composite catalyst with high catalytic activity to ethylene glycol and strong anti-poisoning ability was prepared on the composite carbon material.

The invention discloses a foam extinguishing agent based on a fluorocarbon-organosilicon surfactant compound system, which comprises the following components in percentage by weight: 1 to 3 percent of fluorocarbon surfactant, 10 to 30 percent of organosilicon surfactant, 20 to 30 percent of cosolvent, 1 to 3 percent of foam stabilizer, 1 to 3 percent of anti-burning agent, 2 to 5 percent of flame retardant and 0.1 to 1 percent of preservative. And the balance of water. The heat-resistant and liquid-resistant foam extinguishing agent belongs to an environment-friendly foam extinguishing agent, is low in surface tension and excellent in spreading, fire extinguishing and burning resistance, and is suitable for extinguishing liquid fire with high boiling point and boiling overflow property.

The invention discloses a para-aryl substituted pyridinium salt derivative as an electrochromic material and a preparation method of the para-aryl substituted pyridinium salt derivative. 4-boric acid pyridine (or 4-boric acid ester pyridine) and a halogenated aromatic compound or 4-halogenated pyridine and aromatic boric acid (or aromatic boric acid ester) are used as raw materials respectively, and a target product is obtained through Suzuki coupling, pyridine alkylation and anion exchange. The invention creatively utilizes a simple para-aryl substituted pyridinium salt derivative as an electrochromic material, aims to overcome the problems in the prior art, and provides a non-toxic electrochromic material and a preparation method thereof.

The invention relates to the field of steel slag treatment and utilization, and provides an integrated efficient grinding and iron recovery system and method for steel slag. The system and method areused for solving the problems of low grinding efficiency, high energy consumption and low iron recovery rate in the existing steel slag recovery process. The integrated efficient grinding and iron recovery method for the steel slag comprises the steps that steel slag material flow is fed into a flow stabilizing bin through a steel slag feeding system; after the steel slag enters a roller press, the roller press presses and crushes the steel slag until microcracks appear in steel slag particles; and the pressed steel slag material flow with the microcracks enters a vibrating screen to be screened and then enters a vertical mill to be crushed and ground, and the crushed and ground steel slag has iron and iron-containing substances which accumulate at the internal corner between a material blocking ring and an abrasive disk, and can be guided out of the mill through an iron removing device. The integrated efficient grinding and iron recovery system and method for the steel slag have the beneficial effects of high grinding efficiency, low energy consumption and high iron recovery rate.

The invention discloses an environment-friendly water-based fire extinguishing agent and a preparation method thereof. The water-based fire extinguishing agent comprises a C6 short-chain fluorocarbon surfactant, a C6 fluorine-containing polymer, a foaming agent, a flame retardant and an organic solvent, and the mass part ratio of the C6 short-chain fluorocarbon surfactant to the C6 fluorine-containing polymer to the foaming agent in the fire extinguishing agent is (3-10): (3-10): (8-19). In addition, the fire extinguishing agent further comprises an anti-freezing agent. The water-based fire extinguishing agent has the advantages of being low in surface tension, wide in application range, high in fire extinguishing speed and good in after-combustion resistance, and has the high fire extinguishing grade. The water-based fire extinguishing agent does not contain PFOS and PFOA, is not prone to being enriched in the environment, has no pungent smell, can be completely biodegraded after being sprayed, and is easy to clean after fire extinguishing.

The invention discloses a composite solder containing WC and ZrC at the same time, a preparation method thereof, and a brazing method, belonging to the field of superhard abrasive tool production. Composite solder includes CuSnTi alloy phase and reinforcement phase, each component of CuSnTi alloy phase and its mass percentage are 70-75% Cu powder, 15-20% Sn powder and 5-10% Ti powder, and the reinforcement phase is WC Mixed powder with ZrC, wherein the reinforcement phase accounts for 5% to 40% by volume of the CuSnTi alloy phase; first mix the CuSnTi alloy phase and the reinforcement phase mechanically for a period of time, and then add 5% acrylic acid and 95% p A binder made of toluene is placed between the diamond and the Q460 steel surface to be welded, and then placed in a vacuum brazing furnace for vacuum brazing. The grinding experiment of the diamond tool prepared after brazing in the present invention shows that the diamond holding force is higher and the particle grinding effect is better.

The invention discloses a method for starting A2N two-stage SBR denitrifying phosphorus removal, and belongs to the field of municipal sewage treatment. The invention aims to solve the problems that in the starting process of denitrifying phosphorus removal in the prior art, the growth rate of denitrifying phosphorus removal bacteria is low, and has poor competitive power as compared with aerobic phosphorus-accumulating bacteria, so that nitrate nitrogen is required to be added for enrichment, the starting is difficult, and the cost is increased; and that direct starting of denitrifying phosphorus removal using domestic wastewater requires long acclimation time, and the sludge concentration is greatly reduced due to elutriation. According to the invention, aerobic phosphorus-accumulating bacteria and nitrifying bacteria are respectively cultivated and mixed uniformly according to the mass ratio of 2: 1; the aerobic running strengthens the nitrification-denitrification effect until the oxidation rate of ammonia nitrogen reaches more than 90%, the removal ratio of COD reaches more than 75%, 1 / 3 of the volume of the sludge is separated to enter into another reactor. The original reactor can be used as a denitrifying phosphorus removal reactor, and the two SBR reactors are operated in an A2N mode. By using the method provided by the invention, the starting speed of denitrifying phosphorus removal using actual domestic wastewater is fast, the sludge concentration after starting is high, and nitrate nitrogen is not required to be added during the starting period.

The invention discloses a microbial inoculum capable of regulating plant growth and saving manual work. The inoculum comprises the following raw materials: 10 parts of coconut shell ultrafine powder,10 parts of humic acid, 10 parts of fulvic acid, 10 parts of nucleic acid, 1 part of a microbial composite inoculum, 2 parts of microbial metabolite, 0.5 part of 2-chloroethyl trimethylammonium chloride and the like. The inoculum has the advantages that the growth of plants can be promoted and regulated, heavy metals in water and soil can be effectively removed, and thus the heavy metals are not easy to be enriched in plants; and natural, organic and pollution-free crops can be planted, so that human health is ensured.

The invention discloses a dispersion which is a water-based dispersion solution composed of a fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid and a polyfluothane oxy ether acid salt water solution used as an emulsifier, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.

The invention discloses a method suitable for preparing a fluorine-containing polymer without perfluorooctanoic acid or perfluorooctane sulfonic acid. The preparation method comprises: performing aqueous emulsion polymerization with one or more fluorinated monomers; During aqueous emulsion polymerization, polyfluoroalkoxy ether acid is used as emulsifier, the fluorine-containing polymer prepared by the present invention is free of perfluorooctanoic acid or perfluorooctane sulfonic acid, and the polyfluoroalkoxy ether acid is terminal Polyfluoroalkoxy ether acid emulsifier based on halogen or hydrogen. Its technical scheme mainly involves the following three improvements: (1) Selecting polyfluoroalkoxy ether acid and its salt to replace PFOA / PFOS as fluorine-containing emulsifier, which can be effectively applied to the aqueous emulsion of fluorinated monomers Polymerization reaction; (2) the prepared fluoropolymer does not contain perfluorooctanoic acid or perfluorooctane sulfonic acid, which meets environmental requirements; (3) conforms to cost accounting, and can greatly increase the unit cost of equipment without increasing production equipment and personnel. At the same time, it can also improve production indicators such as polymerization time and polymerization yield.