103results about How to "Good performance parameters" patented technology

The invention discloses a planar torsion spring of a flexible joint. The planar torsion spring of the flexible joint comprises an inner ring, an outer ring and a plurality of elastic body units fixed between the inner ring and the outer ring, wherein each elastic body unit is composed of two symmetrical elastic bodies, each elastic body is provided with two arc sections, openings of the two arc sections in the same elastic body are opposite, and limiting cables used for limiting a limit rotation angle are arranged between the outer ring and the inner ring. The openings of the two arc sections in the same elastic body are opposite so that the elastic body can have better performance parameters, and the maximum torque value and the relative rotation angle of the inner ring and the outer ring under the torque are both largely improved. The relative rotation angle of the inner ring and the outer ring is limited through the limiting cables, and therefore the planar torsion spring is protected, and the reliability of the planar torsion spring is improved.

The invention discloses a composite polypropylene microporous membrane, and a preparation method and application thereof, and provides a device for preparing the composite polypropylene microporous membrane. According to the preparation method, a coating layer is introduced to the surface of one side or both sides of a membrane slice by a coating system during preparation of a biaxially oriented polypropylene microporous membrane, and the coating layer is stretched in both longitudinal and transverse directions or only in the transverse direction to achieve the preparation of the composite polypropylene microporous membrane. The method simplifies the production process of the composite polypropylene microporous membrane and improves the performance of the polypropylene microporous membrane. The composite polypropylene microporous membrane is used in a lithium battery, and since the coating layer is a polymer or a composition capable of forming a gel with an electrolyte, the cycle and safety performance of the lithium battery can be improved. The composite polypropylene microporous membrane is used for gas separation, and separation and enrichment of different gases can be achieveddue to different permeability coefficients of the coating layer to different gases.

The present invention belongs to the technical field of lithium-ion battery separation membrane production, and particularly relates to a three-layer co-extruded lithium-ion battery separation membrane and a production method thereof. The three-layer co-extruded lithium-ion battery separation membrane comprises an A / B / A three-layer coextruded polypropylene resin microporous film, wherein the layer A and the layer B are two different polypropylene resins, the separation membrane thickness is 12-50 [mu]m, and the tensile strength in the longitudinal direction is more than or equal to 130 Mpa. According to the present invention, the tensile strength of the separation membrane can achieve more than or equal to 130 Mpa so as to meet requirements of most users; the separation membrane puncture strength achieves more than or equal to 300 gf, such that the piercing phenomenon during the battery assembly can be well avoided; the heat resistance is good, such that the separation membrane can work in the high temperature environment; the thermal shrinkage is low, such that the separation membrane can not produce the short circuit phenomenon caused by the high shrinkage during the use; and the permeability and the porosity are in the appropriate range so as to well meet the lithium-ion battery performance requirements.

The invention discloses a method for preparing super active carbon by taking biomass power plant ash as a raw material. A particular preparation process is as follows: the biomass power plant ash is boiled by alkali and then is filtered to filter insoluble substances; a hydrochloric acid solution is added into the insoluble substances; impurity removal and water washing are carried out to obtain an active carbon precursor, namely residual carbon; the residual carbon is heated and activated in the atmosphere of water steam and CO2 to obtain a middle product; then the middle product and NaOH are mixed to be heated and activated in the atmosphere of N2; an activated product is washed and dried to obtain the super active carbon. The method takes wastes of a biomass power plant as raw materials and utilizes the NaOH with a low price to replace KOH with the high price, so that the wastes are changed into valuable things to obtain the active carbon with a high additional value for a super capacitor.

The invention relates to an adaptive broadband phase-locked loop circuit, comprising an adaptive driver, a first voltage-current converter, a charge pump and a loop filter. The adaptive driver accumulates phase difference of an output clock of a phase-locked loop and a reference clock, thereby obtaining a rough adjustment control voltage, and outputs the rough adjustment control voltage to the first voltage-current converter. The first voltage-current converter converts the rough adjustment control voltage into a rough adjustment control current. The charge pump takes a mirror current of the rough adjustment control current as a current source, pumps charges into the loop filter or pumps the charges out from the loop filter according to an advancing phase difference signal UP and a laggingphase difference signal DOWN of the output clock through comparison with the input reference clock, and outputs a control voltage signal VCTRL of a voltage-controlled oscillator. According to the phase-locked loop circuit provided by the invention, an output frequency range of the phase-locked loop is expanded, and capture time is reduced. The phase-locked loop circuit can be applied to a clock circuit of a high speed analog-to-digital converter and a high speed serial interface circuit.

The invention discloses a kit for detecting active tuberculosis based on antigen-specific TNF-alpha-ELISA (enzyme linked immunosorbent assay) and an application thereof. The kit comprises an ELISA plate coating a TNF-alpha antibody, a TNF-alpha protein standard, protein liquid of ESAT-6 and CFP-10, a biotin-marked TNF-alpha antibody and avidin-marked horseradish peroxidase. By adopting the kit for detecting active tuberculosis based on TNF-alpha-ELISA, a method for distinguishing active tuberculosis infection from latent tuberculosis infection is established; the TNF-alpha released by the peripheral blood mononuclear cell under the stimulus of tuberculosis-specific antigens ESAT-6 and CFP-10 and the background TNF-alpha released by the peripheral blood mononuclear cell without stimulus are quantitatively detected through the ELISA technology, and the value of the antigen-specific TNF-alpha is obtained by subtracting the two so as to perform direct diagnosis on the active tuberculosis.

The invention belongs to the technical field of pulping and papermaking and particularly relates to life paper made from bamboo. The whiteness degree of paper pulp is 25-40% ISO, the tensile index is larger than or equal to 8 Nm / g, the folding strength is 15-140 times, the fracture length is 6-8 km, the ash content is smaller than or equal to 1.2%, the tearing strength is 150-600 mN, and the beating degree is 16-22 degree SR. The produced life paper is not subjected to the bleaching process, the life paper made from bamboo reserves the natural color of the bamboo and has good performance parameter, conventional wood pulp can be replaced with the bamboo, the bamboo is superior to the conventional wood pulp, it is avoided in that chemicals used in the bleaching process remain in the life paper, the manufactured bamboo pulp product does not contain dioxin and can adsorb organic halide and other carcinogenic substances, 100% of natural color of bambusa emeiensis is kept, pollution of waste gas and waste liquor caused by bleaching to the environment is eradicated, and thus the method has the characteristic of ecological environmental protection.

The invention discloses a method for implementing a charge pump keeping constant output current, and the charge pump thereof. The method comprises the following steps of: comparing external input voltage of a charge pump main body circuit with reference voltage, and inputting a comparison result into a clock generating circuit to output corresponding clock oscillation frequency, so that the charge pump main body circuit outputs constant current. The output of the charge pump main body circuit is connected to an enable end of the charge pump main body circuit through a voltage feedback and comparison circuit. The external voltage is dynamically detected, and when the external voltage changes, corresponding clock oscillation frequency can be selected according to the external input voltage,so that the charge pump outputs constant current. Therefore, the output voltage ripple of the charge pump is reduced, and the output voltage stability is improved. The charge pump is simple in implementation mode and structure and low in cost.

The invention relates to the technical field of a sound box, and particularly to a loudspeaker of a sound box. The ripple height and width of a centring disk in the loudspeaker reduce along with increase of a radius. Furthermore the centring disk is prepared according to a cold pressing process. A diaphragm is prepared by a plurality of slurries. A DLC film is further plated outside the diaphragm. The loudspeaker of the sound box has advantages of relatively small distortion, relatively high limit bearing power and relatively good effect.

The invention relates to the technical field of elevator vibration reducing devices, in particular to a novel elevator car vibration reducing device. The novel elevator car vibration reducing device comprises an upper connecting plate, a lower connecting plate and a rubber body arranged between the upper connecting plate and the lower connecting plate, wherein the upper connecting plate and the lower connecting plate are arranged in an up-and-down symmetric mode and are both rectangular, and thus the contact area between the vibration reducing device and the bottom and the bottom frame of an elevator car is enlarged; due to the fact that two holes are formed in the rubber body, large compression deformation can be generated, and good damping and vibration reducing performance is achieved; lastly, bolts are mounted in upper through holes and lower through holes in the two ends of the upper connecting plate and the two ends of the lower connecting plate, and thus the vibration reducing device is tightly and firmly connected with the bottom and the bottom frame of the elevator car. The vibration reducing device is capable of performing the dual functions of elevator overload protection weighing and elevator car vibration reducing, has good performance parameters and is high in stability.

The invention provides the composite microporous membrane containing a -shaped porous layer oriented in a transverse stretching direction, wherein the composite microporous membrane comprises at leastone porous base layer and at least one layer of nano-fibrous non-polyolefin polymer porous layer which is positioned on one side or two side surfaces of the porous base layer and is oriented along the transverse stretching direction of the composite microporous membrane; the nano-fibrous non-polyolefin polymer porous layer oriented along the transverse stretching direction of the composite microporous membrane can suppress the longitudinal cracking of the composite microporous membrane in the using process, so that the usability of the composite microporous membrane is improved. The compositemicroporous membrane is used in a lithium ion battery, so that the infiltration performance of an electrolyte on the membrane can be effectively improved, the cycling and using performances of the battery can be improved, and the service life of the lithium ion battery can be prolonged.

The invention relates to the technical field of quartz tailings applied to building materials and especially relates to a quartz tailings heat-insulating building block and a preparation method thereof. The heat-insulating building block is prepared by combining a hollow block with a filling material; the raw materials of the hollow block and the filling material both comprise quartz tailings powder; the quartz tailings powder is formed by grinding the quartz tailings into fine powder, wherein the fineness is subjected to the screening treatment by adopting a square hole sieve with the size of aperture being 45mu m and the weight of screen residue is 10%; the content of silicon dioxide in the quartz tailings is 70%; the limitation of the raw material ingredients in the hollow block and the filling material is adopted, so that all the raw materials are interacted, especially, the synergic effect between the quartz tailings and the quick lime, the aluminum powder or cement is achieved; the content of the radioactive substance in the raw materials is reduced, so that the radioactivity is reduced and the quality of the heat-insulating building block is increased.

The invention discloses non-fried self-cooked instant noodles. A bag of the non-fried self-cooked instant noodles comprises a noodle cake and seasoning bags. The noodle cake is prepared from the following raw materials in parts by weight: 8 to 15 parts of whole meal of potatoes, 70 to 80 parts of high gluten flour, 0.5 to 1.5 parts of edible salt, 1 to 2 parts of konjac glucomannan, 3 to 8 parts of eggs, 1 to 3 parts of vital gluten and 0.1 to 0.5 part of plant oil. According to the non-fried self-cooked instant noodles, by the selection of the high gluten flour and the whole meal of potatoes as well as other raw material components and further definition of ratios of the components, the effect can be jointly achieved by mutual cooperation of the components; moreover, compared with the formula of existing noodles, the non-fried self-cooked instant noodles have the advantages that on the basis of guaranteeing the taste of the noodles, the konjac glucomannan is creatively added, so that the kinds of ingredients and additives are reduced, and the non-fried self-cooked instant noodles can conform to the existing admirable dietary habit which is natural, ecological and healthy and have better natural taste. The invention further provides a preparation method of the non-fried self-cooked instant noodles.

The invention relates to a vibration test device, and particularly discloses a moving part guiding device for a vibration table. The device comprises an upper guiding shaft, a lower guiding shaft, an upper hydrostatic bearing and a lower hydrostatic bearing, wherein the upper guiding shaft is arranged on the upper portion of a movable coil, the lower guiding shaft is mounted at the bottom of the movable coil, the upper hydrostatic bearing is installed at the top of an iron core, and the lower hydrostatic bearing is positioned at the bottom of the iron core. The upper hydrostatic bearing is sleeved outside the upper guiding shaft, and the lower hydrostatic bearing is sleeved outside the lower guiding shaft. According to the moving part guiding device for the vibration table, the anti-overturning moment capacity can be improved, eccentric large test-piece vibration test requirements are met, influences produced by large installation space of common bearing guiding devices on vibration table magnetic fields are avoided, and a good vibration table movable coil guiding function is achieved.

The invention discloses a preparation method of unbleached neosinocalamus affinis paper pulp, and belongs to the technical field of pulping and papermaking. The whiteness of paper pulp prepared from neosinocalamus affinis is 25%-40% ISO, the tensile index is larger than or equal to 8 Nm / g, the folding strength is 15-140 times, the fracture length is 6-8 km, the ash content is smaller than or equal to 1.2%, the breaking length is 150-600 mN, and the beating degree is 16-22-degree SR. The preparation method of the neosinocalamus affinis paper pulp comprises the following steps of raw material repulping, steaming, deflaking, pulp grinding, screening and washing. The neosinocalamus affinis paper pulp can be used for preparing household paper. The paper pulp preparation method has the advantages of being high in yield, easy to operate, convenient to produce, low in cost and environmentally friendly, and 100% of the natural color of the neosinocalamus affinis is kept.

The invention discloses a phased array antenna directional pattern performance parameter optimization method and an electronic device. The method includes the following steps that: the performance parameter of the directional pattern of a phased array antenna is determined; an objective function corresponding to the performance parameter of the directional pattern of the phased array antenna is determined; the attenuation value of the T / R component of the phased array antenna is obtained, and the change value of the objective function corresponding to the attenuation value is obtained; and an optimal amplitude weighted iteration direction is determined based on the change value of the objective function. With the method provided by the invention adopted, the technical problem that the directional pattern performance parameter of an active phased array antenna in the prior art does not satisfy actual demands can be solved.

The invention discloses a method for preparing a repeated fracturing blocking agent based on a selective gel breaker. The method comprises the following steps of: (a) preparing polyacrylamide; (b) dissolving the prepared polyacrylamide; (c) adding a pre-crosslinker into the solution; (d) adding a second crosslinker into the solution; (e) adding the gel breaker into the solution, wherein the gel breaker is ammonium persulfate; and (f) reacting the mixed solution in an incubator, and thus obtaining a target product. By adopting the method, the repeated fracturing blocking agent required by the conventional oilfields can be successfully prepared; the method is simple and facilitates artificial operation; various performance parameters of the prepared repeated fracturing blocking agent are superior to those of the conventional pressure blocking agent, and a foundation is laid for the exploitation of the oilfields; and by selecting the proper gel breaker, the gel breaking performance of the product is improved.

The invention relates to a transformer coil bending-shaped oil guide system. A longitudinal oil channel-bending-shaped oil guide structure is arranged in a coil. The transformer coil bending-shaped oil guide system is characterized by comprising a coil wire, a transverse oil channel, a coil inner diameter side longitudinal oil channel, a coil outer diameter side longitudinal oil channel, a coil middle longitudinal oil channel, an inner oil stopping ring and an outer oil stopping ring. Each coil pie in the coil is divided into three equal portions. According to the odd number coil pies, the longitudinal oil channels are only arranged between a first portion coil pie and a second portion coil pie. According to the even number coil pies, the longitudinal oil channels are only arranged between a second portion coil pie and a third portion coil pie, a result is calculated according to the height of the coil, the number of the coil pies and distribution of oil flow and an inner oil stopping clapboard and an outer oil stopping clapboard are arranged along the height direction of the coil. The transformer coil bending-shaped oil guide system is high in filling coefficient, good in cooling effect, excellent in performance parameters and capable of effectively guaranteeing coil heat dissipation effect, reducing coil temperature rise and satisfying the requirement for transformer service life of a user.

The invention relates to the technical field of aerogels, and especially relates to a preparation method of a composite silica aerogel. The preparation method of the composite silica aerogel comprisesthe following steps: 1, mixing and stirring methyltrimethoxysilane, an aqueous hydrochloric acid solution, a cationic detergent and glass fibers, and hydrolyzing the obtained mixture to obtain a mixed solution; 2, performing ultrasonic treatment on the mixed solution to obtain a wet gel; 3, soaking the wet gel in a solvent, and drying and ageing the soaked wet gel; and 4, modifying, drying and modifying the aged wet gel to obtain the composite silica aerogel. The preparation method of the composite silica aerogel, provided by the invention, solves the technical problem of unsatisfactory poredistribution and particle size of the aerogel prepared by existing preparation methods.

The invention relates to an optical film and a preparation method and application thereof. The optical film comprises a first water-blocking oxygen-isolating film, a quantum dot light-emitting film and a second water-blocking oxygen-isolating film which are sequentially arranged in a stacked mode; the quantum dot light-emitting film comprises two or a combination of three of a red light quantum dot light-emitting film, a green light quantum dot light-emitting film and a blue light quantum dot light-emitting film which are stacked. According to the optical film, different quantum dot light-emitting films are arranged in a stacked mode, performance degradation of the optical film caused by mutual reaction among different quantum dots and between the different quantum dots and quantum dot ligands under the action of illumination, water vapor and oxygen is avoided, and the reliability of products can be effectively improved.

Embodiments of the invention disclose a depth image generation method and apparatus. A specific embodiment of the method comprises the steps of obtaining a target depth image; inputting the target depth image to a pre-trained convolutional neural network, thereby generating a restored image of the target depth image, wherein the convolutional neural network is obtained by the following training steps of obtaining a training sample set, wherein each training sample comprises a first sample depth image and a second sample depth image obtained by shooting a same object by a first depth camera anda second depth camera, and the second depth camera is superior to the first depth camera in at least one preset depth camera performance parameter; by taking the first sample depth image and the second sample depth image in the training sample of the training sample set as an input and an expected output of an initial convolutional neural network respectively, training the initial convolutional neural network; and determining the initial convolutional neural network obtained by training as the pre-trained convolutional neural network. Therefore, the restored image of the depth image is generated.

The invention discloses an amino-methyl dual-functionalized SBA-15 material as well as a preparation method and an application thereof. The SBA-15 material has a submicron-grade short mesoporous channel, wherein the mesoporous channel ranges from 0.25 to 0.45 mu m in length; the mesoporous structure is a two-dimensional hexagonal structure; the specific surface area of the mesoporous structure ranges from 420 to 460 m<2> / g; the mesoporous diameter ranges from 5.0 to 5.1nm; the mesoporous volume ranges from 0.5 to 0.7 cm<3> / g; amino and methyl functional groups are uniformly distributed on the surface of the material. The preparation method comprises the following steps: adding surfactants P123 and KCl into a hydrochloric acid solution; then adding tetraethyl orthosilicate and aminopropyl diethoxymethylsilane; stirring for 24 hours at the temperature of 35 to 40 DEG C; standing in a self-pressure kettle; standing and performing a hydro-thermal treatment in a baking oven at the temperature of 90 to 100 DEG C; cooling, filtering, washing and drying; extracting an obtained product by using ethyl alcohol and drying, thereby obtaining the SBA-15 material. The SBA-15 material can be applied to bilirubin adsorption in PBS (Phosphate Buffer Solution) simulation plasma.

The invention belongs to the technical field of glucose production. An edible glucose production method includes steps of saccharifying, crystallizing, nanofiltration and drying. A production processis simple and feasible, steps of decolorizing, ion exchange and the like are reduced, and accordingly cost of enterprises is greatly saved.

The invention provides a normal-pressure preparation method for silicon dioxide aerogel.The normal-pressure preparation method includes the steps that a metal salt type compound is adopted for modifying aged silicon dioxide wet gel to obtain modified wet gel, and the metal salt type compound can be coordinated with a hydroxide radical; the modified wet gel is subjected to solvent displacement to obtain modified gel; the modified gel is dried at normal pressure to obtain silicon dioxide aerogel.On the basis of a normal-pressure preparation method for aerogel in the prior art, the normal-pressure preparation method for silicon dioxide aerogel is improved, and the metal salt type compound is adopted for modifying the aged aerogel to obtain the silicon dioxide aerogel product with good performance parameters.In addition, the normal-pressure preparation method for silicon dioxide aerogel can shorten technological processes and lower the cost and facilitates industrialized production.

The invention discloses a refracturing plugging agent for oilfield exploitation, which comprises the following components in percentage by weight: 2-4 percent of polyacrylamide, 0.1-0.3 percent of pre-crosslinker, 0.2-0.4 percent of second crosslinker, 0.05-0.1 percent of gel breaker, 0.1-0.3 percent of strengthening agent and the balance of water. The refracturing plugging agent is low in manufacturing cost, has a simple manufacturing process, is excellent in various performance parameters and is suitable for leakage plugging in the process of oilfield development.

The invention discloses an acidizing fluid thickener synthetic process based on control of the reaction monomer ratio. The process comprises the following steps: (a) purifying a reaction monomer; (b) preparing an initiator liquor; (c) weighing 2-methyl-2-acrylamidyl propanesulfonic acid solid and dissolving the solid in distilled water; (d) adding acrylic acid and dimethyl diallyl ammonium chloride and controlling the content of dimethyl diallyl ammonium chloride with 11-13%, and dissolving adequately; (e) adjusting the pH value of the liquor; (f) shifting the mixed liquid for reaction to a reaction container, and stirring; (g) adding the initiator liquor; and (h) heating the reaction system for polymerization reaction for 4-5 hours to obtain a target product. According to the process provided by the invention, the acidizing fluid thickener can be successfully synthesized, and the synthetic process is simple in step, simple to operate, short in synthetic time, high in synthetic efficiency and low in synthetic cost. Performance parameters of the synthetic product are superior to those of current acidizing fluid thickener, and the intrinsic viscosity of the target product is improved by controlling the content of dimethyl diallyl ammonium chloride.

The invention discloses a cable trench cover plate prepared by doping retired polymer insulator rubber and core rod powder and a preparation method thereof. The retired insulator rubber and core rod are pulverized, and the pulverized retired insulator rubber and core rod serve as fillers and respectively added to silicone rubber and glass fiber reinforced epoxy resin and prepare a composite resincapable trench cover plate through high-temperature moulding and solidification. The method realizes recycling and reusing of the retired insulator material in the field of cable trench cover plate preparation for the first time. The test shows that the cable trench cover plate prepared according to the preparation method is excellent in various performance parameters and that mechanical propertyand thermal property test data results of the cable trench cover plate are higher than that of an ordinary concrete cover plate and steel fiber reinforced cover plate. The method achieves a technicaleffect of recycling a lot of retired insulator materials under the condition of not influencing the performance of the composite resin cover plate in all aspects for the first time, and has importantsignificance and application values on the aspects of waste macromolecular material recycling, energy conversation and sustainable development of materials.

The invention discloses a synthesis process of a thick oil emulsifying viscosity reducer. The synthesis process comprises the following steps: (a) performing a condensation reaction on octylphenol polyoxyethylene ether and formaldehyde; (b) performing a sulfonation reaction on a co-condensation polymer and concentrated sulfuric acid; and (c) finally neutralizing to prepare the thick oil emulsifying viscosity reducer. According to the synthesis process disclosed by the invention, the thick oil emulsifying viscosity reducer can be successfully synthesized, the synthesis efficiency is high, the cost required for synthesis is low, and the various performance parameters of the synthesized thick oil emulsifying viscosity reducer are excellent.

The invention discloses a polyamic acid with a general structural formula (I) and a polyimide with a general structural formula (II), wherein a chemical formula shown in the description is the core ofaromatic tetracarboxylic dianhydride; and the weight-average molecular weights of both the polyamic acid and the polyimide are 20000 to 30000. The polyimide has good high-temperature-resistant thermostability, good flexibility, relatively high hydrophobicity and a low dielectric constant. The invention further discloses preparation methods and application of the polyamic acid and the polyimide. (The general structural formula (I) and the general structural formula (II) are shown in the description).