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

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 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 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 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 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 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.