11results about How to "Efficient manufacturing" patented technology

The application relates to a high-pressure-resistant PES filter membrane and a preparation process thereof, which comprises a porous main body, the porous main body comprises a mesoporous layer, a pre-filter layer and a separation layer in sequence along the thickness direction, the surface of one side of the mesoporous layer is a liquid inlet surface, the SEM average pore diameter of the pre-filter layer is larger than that of the mesoporous layer; the PMI average pore diameter of the filter membrane is 0.15-0.6 microns; a plurality of liquid inlet holes are distributed on the liquid inlet surface, the SEM average pore diameter K of the liquid inlet hole is 0.2-1.5 microns, and the hole area rate of the liquid inlet surface is 5-35%; the pore diameter of the liquid inlet hole is not less than 1.5K, which is a main liquid inlet hole, and the hole area rate of the main liquid inlet hole is 2-25%. After the mesoporous layer is introduced into the filter membrane, the mechanical property of the filter membrane is obviously improved, so that the pore structure of the porous main body on the liquid inlet surface and near the liquid inlet surface of the filter membrane does not deform too much under high pressure, so that the filter membrane still maintains a large effective flow channel area, and the high flux and high load of the filter membrane are ensured.

The invention discloses a preparation method and application of a bimetallic nano-enzyme induced MOFs (at) CDs material, and the preparation method at least comprises the following steps: I, dissolving FeCl3, CoCl2 and 2-aminoterephthalic acid in N, N '-dimethylformamide to form a mixed solution I, and carrying out a reaction I to obtain a bimetallic MOFs material; step II, mixing tricarballylic acid and m-phenylenediamine, and carrying out a reaction II to obtain carbon dot powder; step III, dissolving the carbon dot powder obtained in the step II in methanol, and adding rhodamine B dye to obtain a CDs material; and IV, dissolving the bimetallic MOFs material obtained in the step I and the CDs material obtained in the step III in water, stirring, and drying to obtain the MOFs (at) CDs material. The synthesized nano-enzyme is simple to prepare and high in catalytic activity, the carbon dot material is encapsulated into the MOFs material, the fluorescence characteristic of the MOFs material is enhanced, and the carbon dot material is combined with o-phenylenediamine to be used for detecting H2O2.

The invention discloses a preparation method and application of a CDs / RhB-coated HZif-8 composite material, and the preparation method at least comprises the following steps: step I, dissolving ZnSO4 and 2-methylimidazole in methanol to form a mixed solution I, and reacting I to obtain a graded porous MOFs material; step II, dispersing citric acid and polyethyleneimine in N, N '-dimethylformamide to form a mixed solution II, and reacting the mixed solution II to obtain a carbon dot material; and step III, mixing the graded porous MOFs material obtained in the step I, the carbon dot material obtained in the step II and a rhodamine B solution, stirring, and drying to obtain the CDs / RhB-coated HZif-8 composite material. The synthesized material integrates two functions and can realize detection and removal of antibiotics, the graded porous MOFs structure can allow pre-concentration of a target analyte, and the detection sensitivity of the material is remarkably enhanced.

This invention provides a magnetic field-induced growth device for nanomaterials with adjustable magnetic field strength, characterized by having a furnace frame; a magnetic field unit located in the middle of the furnace frame for providing a magnetic field; a heating furnace located on the furnace frame for holding and heating the nanomaterials; and a cooling unit for cooling the upper and lower permanent magnets.

The present invention relates to a positive electrode active material in which the particle size of primary particles is uniform, so that the amount of fine powder is small, and the particles are rarely crushed in a fine crushing step and a rolling step for manufacturing a lithium secondary battery. The present invention relates to a positive electrode active material, a method for preparing the same, and a positive electrode and a lithium secondary battery comprising the same, in which the positive electrode active material comprises a lithium nickel cobalt manganese-based oxide having a nickel content of 50 mol% or more in all transition metals and being in the form of a single particle consisting of 10 or less primary particles, and a polydispersity index (PDI) value according to Equation 1 described in the specification is 1.0 to 1.8.

The present application relates to the technical field of moisture-permeable membrane materials, and provides a polysulfone moisture-permeable hollow fiber membrane, the average pore size of a first surface is not greater than 100 nm, and the average pore size of a second surface is not less than 0.25 μm; the content of sulfonic acid groups on the first surface is greater than the content of sulfonic acid groups on the second surface, and the difference between the content of sulfonic acid groups on the first surface and the content of sulfonic acid groups on the second surface is not less than 1X10 ‑3 -4; the water conversion efficiency of the hollow fiber membrane is 40% to 70%, and the water vapor permeation rate of the hollow fiber membrane is 0.5 to 3 g / min. The structure of the polysulfone moisture-permeable hollow fiber membrane provided by the present application shows high water conversion efficiency and water vapor permeation rate, and also has good tensile strength, so that it has a long service life.

Provided is a management method for a first optical laminate including a first [lambda] / 4 member and a second optical laminate including a second [lambda] / 4 member, the method comprising: (i) classifying a plurality of the first optical laminates into Na groups (wherein the average values of in-plane phase differences differ from each other; the Na groups include a 1a group, a 2a group, and a 3a group which are contiguous in this order when arranged in the order of the magnitude of the average value, and the maximum value of the in-plane phase difference of the first optical laminate in the 2a group is smaller than the maximum value of the in-plane phase difference of the first optical laminate in the 1a group and the maximum value of the in-plane phase difference of the second optical laminate in the 3a group is smaller than the maximum value of the in-plane phase difference of the second optical laminate in the 3a group. The minimum value of the in-plane phase difference of the first optical laminate in the 2a-th group is greater than the minimum value of the in-plane phase difference of the first optical laminate in the 3a-th group); (ii) the plurality of second optical laminates are classified into Nb groups in which the average values of in-plane phase differences differ from each other (wherein the Nb groups include a 1b group, a 2b group, and a 3b group that are contiguous in this order when arranged in the order of the sizes of the average values; the maximum value of the in-plane phase difference of the second optical laminate in the 2b group is smaller than the maximum value of the in-plane phase difference of the second optical laminate in the 1b group. The minimum value of the in-plane phase difference of the second optical laminate in the 2b group is greater than the minimum value of the in-plane phase difference of the second optical laminate in the 3b group); (iii) matching a combination A of the 1a-th group and the 1b-th group and a combination B of the 3a-th group and the 3b-th group on the basis of an average value of the in-plane phase differences; and (iv) assigning the first optical laminates included in the 2a-th group and the second optical laminates included in the 2b-th group to the combination A and / or the combination B, respectively, and reducing the difference between the number of the first optical laminates and the number of the second optical laminates in the combination A and / or the combination B.

The present invention relates to a lithium metal battery having improved lifetime and stability, comprising: a positive electrode; a lithium metal negative electrode; a separator disposed between the positive electrode and the lithium metal negative electrode; and a non-aqueous electrolyte including an organic solvent, a lithium salt, and the compound represented by Chemical Formula I as described herein.

This disclosure relates to composite wing panels and methods of manufacturing them. Wing panels having composite wing skin and longitudinal spars are produced on a moving production line. The wing panels are formed on a mandrel that moves along the production line through stations where a laminator lays the wing skin and a pick-and-place machine places longitudinal spars supplied by a longitudinal spars feeder onto the wing skin.

The invention relates to a rotor of an electric motor, the rotor comprising a rotor stack arranged on a rotor shaft of the rotor, and the rotor stack comprising a rotor yoke and a plurality of rotor teeth, each carrying an excitation winding. The rotor further comprises at least two segments which at least divide the rotor stack in the circumferential direction of the rotor, each segment comprising at least one rotor tooth with the excitation winding thereof, and at least one part of the segments comprising a section of the rotor yoke which is embodied in one piece with the corresponding rotor tooth of the segment. In this case, the sections are joined to each other via a force-fitting and / or form-fitting connection. The connection is at least partially established in such a way that the segments are clamped against each other by a force acting on the rotor stack, the force being formed as a result of a shaft-hub connection present between the rotor stack and the rotor shaft. The invention further relates to a method for producing a rotor.

The invention discloses a variable-pressure washing machine with high and low pressure functions, and relates to the technical field of household appliances, the variable-pressure washing machine is provided with a high and low pressure pressing device composed of a moving device, a pressing rod, a pressing body, a pressing shell and a valve, the valve comprises a pressure suction valve and a pressurization valve, the variable-pressure washing machine is provided with a pressure-resistant shell, and the pressure-resistant shell is provided with a pressure-resistant cover. A built-in groove, a sealing device and a built-in pressure-resistant door are arranged on the pressure-resistant shell, and a high-pressure space chamber or a low-pressure space chamber of the variable-pressure washing machine is integrally connected with a high-pressure and low-pressure pressing device through a high-pressure and low-pressure control valve by a pipeline or integrally connected with the high-pressure and low-pressure pressing device. And a pressure suction valve or a pressurizing valve of the high-low pressure pressurizing device is connected with a pipeline through a high-low pressure control valve. The space chamber of the pressure-resistant shell of the variable-pressure washing machine is a low-air-pressure space chamber lower than the atmospheric environment air pressure or a high-air-pressure space chamber higher than the atmospheric environment air pressure.