26results about How to "Stable material" patented technology

The invention discloses a bimetallic MOF material and a preparation method and application thereof. The preparation method comprises the following steps: dispersing organic lanthanum salt, organic ferric salt and organic ligand in an organic solution, stirring, and carrying out ultrasonic treatment to obtain a mixed solution; adding alkali into the mixed solution, and then carrying out ultrasonic treatment to obtain a precursor; heating the precursor in an oil bath, and naturally cooling after the reaction is finished; the reactants are separated, dried and ground into powder, and the bimetallic MOF material is obtained. The bimetallic MOF material has adsorption and fluorescence detection functions. The bimetal MOF material prepared by the method disclosed by the invention has very high adsorption capacity on fluorine ions in water, and the maximum adsorption capacity of the bimetal MOF material reaches 400.860 mg / g. And the detection limit of the linear range is 0-80 [mu] M.

The invention relates to a pharmaceutical composition of a compound shown in a formula (I) or a salt thereof, a preparation and a preparation method thereof. Specifically, the invention discloses a pharmaceutical composition taking a compound as shown in a formula (I) or pharmaceutically acceptable salt thereof as an active ingredient. The pharmaceutical composition contains a compound as shown in a formula (I) or pharmaceutically acceptable salts thereof and pharmaceutically acceptable auxiliary materials. The pharmaceutical composition provided by the invention has good pharmaceutical stability and safety, and the preparation method is simple and convenient and is suitable for industrial production. # imgabs0 #

The invention relates to a method for inhibiting anisotropy of a metal powder bed melt-formed superalloy through powder pretreatment, which comprises the following specific steps: taking a proper amount of nickel-based superalloy powder, and carrying out vacuum sheathing treatment; s2, after the nickel-based high-temperature alloy powder in the step S1 is subjected to vacuum sheathing treatment, the nickel-based high-temperature alloy powder is subjected to heat treatment for a proper time at a proper temperature, and furnace cooling is carried out, so that a proper amount of endogenous nanoparticles are separated out; in this way, powder element distribution and dendritic crystal distribution of atomized powder are improved, and nano-particles are endogenously separated out. After heat treatment of the nickel-based superalloy powder in the step S2 is completed, proper printing parameters are selected, the powder is printed and formed through a metal powder bed fusion forming technology, and the nickel-based superalloy material with weakened anisotropy and excellent mechanical performance is obtained; and the nickel-based high-temperature alloy part obtained in the S3 is subjected to solution treatment, the anisotropy is further eliminated, and the performance is improved. Compared with an existing nickel-based composite material, the mechanical property of the prepared nickel-based high-temperature alloy material is obviously improved.

The invention belongs to the technical field of energy storage materials, and particularly relates to an aqueous ammonium ion battery electrode material based on perylene diimide, a preparation method and application. Firstly, a perylene diimide compound and a preparation method are provided, the material is stable, the material is rich in carbonyl structures, and enol type conversion can be carried out in the charging and discharging process to combine / release ammonium ions to complete charge storage; the invention also provides a water-based battery prepared from the perylene diimide compound and a preparation method, and the water-based battery has reversible specific capacity of 190.62 mAh / g in 1M (NH4) 2SO4 solution and current density of 1A / g, and shows excellent rate capability. After 1000 cycles of continuous charging and discharging in a 1M (NH4) 2SO4 solution and at the current density of 10A / g, the lithium ion battery still has the specific capacity of 101.67 mAh / g, and the lithium ion battery is simple in preparation process, low in cost and wide in market application prospect.

The invention discloses a perovskite quantum dot Micro-LED based on a double-ligand strategy and a preparation method thereof. The Micro-LED structurally comprises a distributed Bragg reflector, a quantum dot color conversion unit, a GaN blue light LED and a CMOS integrated circuit substrate. The GaN blue light emitting unit is composed of a plurality of blue light LED pixel points and is integrated on the CMOS integrated circuit substrate. The quantum dot color conversion unit sequentially comprises a glass substrate, a metal electrode, an electrode modification layer, an electron transport layer, a perovskite quantum dot layer, a hole transport layer, a hole injection layer, a transparent electrode and a packaging film from bottom to top, and is used for converting blue light into a required color and realizing a wider color gamut. The luminescent material of the perovskite quantum dot layer is CsPbX < 3 + > PEABr < + > fluorine-containing substituted phenyl ketone, wherein X is halogen elements Br, I and Cl. According to the invention, not only can many problems in the traditional technology be solved, but also the luminous efficiency and the environmental stability of the device can be remarkably improved, and a new technical solution and a wide application prospect are provided for the development of the next generation of high-performance Micro-LED.

The invention relates to the technical field of lithium batteries, in particular to a metal lithium negative electrode interface protection layer, a preparation method and application of the metal lithium negative electrode interface protection layer in a lithium battery, the interface protection layer comprises orthophosphate AxPO4, an organic polymer and a conductive carbon material, the mass of orthophosphate AxPO4 accounts for 40-70% of the total mass, the mass of the organic polymer accounts for 5-30% of the total mass, and the mass of the conductive carbon material accounts for 5-30% of the total mass. And the mass of the conductive carbon material accounts for 10-50% of the total mass. When the protective layer is applied to the lithium battery, orthophosphate AxPO4 can be decomposed in the first charging process to generate lithium phosphate and A, and alloying / dealloying reaction, namely generation and decomposition of Li3 / xA alloy, is carried out in subsequent circulation, so that the high activity of a lithium metal negative electrode is ensured, the dendritic crystal growth problem is inhibited, the service life of the battery is prolonged, and the safety of the battery is improved.

The present invention provides a universal modular oil-water separation device, which belongs to the field of kitchen waste treatment, and includes a slag removal bin, an oil collection bin, a first conveying pipeline for connecting the slag removal bin and the oil collection bin, and a second conveying pipeline connected to the oil collection bin for output. The slag removal bin is a universal module made of plastic material. The slag removal bin includes a slag removal shell and a slag removal cover. The slag removal cover is detachably closed and covered on the opening of the slag removal shell through a connecting piece. The slag removal shell and the slag removal cover are reserved with reserved holes for feeding and multiple reserved holes for installing the slag removal device. The reserved holes are closed holes that are integrally formed with the shell or the cover and protrude or recessed from the surface of the shell where they are located. The present invention improves the versatility of the oil-water separation device by making the structure of the slag removal bin in the oil-water separation device universal, so that it can meet the use needs of a variety of different places of use, and has a simple structure and a wide range of uses.

The utility model discloses an assembling tool for an anti-icing valve diaphragm assembly of an aircraft engine, which comprises a fixed base, an adjusting bolt and a fixer which are matched with each other, an upper base matching hole with threads is arranged on an upper base at the top of the fixed base, and a lower base matching hole for fixing the diaphragm assembly is arranged on a lower base of the fixed base. Through the cooperation of the fixed base, the adjusting bolt and the fixer, the efficient assembly of the diaphragm assembly is realized, and the working efficiency is greatly improved. And meanwhile, the tool is firm in material, so that the safety in the assembly process is ensured.

The present invention provides a multi-element, regionally doped, cobalt-free positive electrode material, which has a molecular formula of LixNiaMnbAlcMgdWeO2, wherein 0.95≤x≤1.1, 0.5≤a≤0.9, 0.1≤b≤0.5, 0<c≤0.01, 0<d<0.01, 0<e≤0.01, and a + b = 1. The positive electrode material comprises an Al-doped region, an Mg-doped region and a W-doped region in an order from the inside to the outside. Also provided is a method of preparing the positive electrode material. The cobalt-free positive electrode material of the present invention can better adapt to a stress release by the positive electrode material regionally doped with Al, Mg, and W elements, achieving a moderate adjustment and avoiding imbalance, so that the material has more stable structure, and better rate performance and cycle performance. The method of preparing the material has a simple process, is easy to implement, and can stably prepare a positive electrode material with excellent structure and performance.

The utility model belongs to the technical field of water treatment relates to a kind of domestic ceramic membrane purifier, including filter element, filter drum and two end caps, and the end cap of two ends is respectively provided with water inlet and water outlet and is connected with the porous channel in filter element, water outlet connected with the water purification channel outside filter element is provided on the filter drum, the both ends of the filter drum are fixed with connecting ring, the inner wall end portion of the connecting ring away from filter drum is provided with first taper surface, the inner wall end portion of the end cap close to filter drum is provided with second taper surface, the first taper surface, second taper surface and filter element outer wall form sealed cavity, O-ring is provided in the sealed cavity, the contact surface of O-ring and first taper surface, second taper surface and filter element outer wall all form sealing structure.The domestic ceramic membrane purifier provided by the utility model has the advantages of simple structure, small pollution, high flux, long service life and low use cost.

The invention discloses a grounding wire dismounting tool for overhead transmission line maintenance, which comprises a control box, the control box is provided with an inner cavity, one side of the control box is provided with a side groove connected with the side groove, the other side of the control box is provided with a driving block, and the outer wall of the side, provided with the driving block, of the control box is fixedly connected with a driving assembly and a power supply. Bottoms of two handles of the wire hanging clamp are respectively connected with a side groove and a driving block, the driving block is provided with a guide inclined plane, a threaded sleeve is fixed at the bottom of the control box, a threaded column is arranged at the top of the insulating rod, the insulating rod is fixedly connected with the threaded sleeve in a threaded mode, and an anti-skid sleeve is fixed at the bottom of the insulating rod. The device is simple and reliable to operate when hanging the ground wire, can be remotely controlled to flexibly carry out operation, and effectively solves the problem that the angle of the device is limited when a traditional method is used for operation.

The application provides a kind of fabric reinforced polymer composite material and preparation method, the method is first by hydroentanglement process thermoplastic fiber web is fixed on the two sides of fabric, and hydroentanglement makes thermoplastic fiber in thermoplastic fiber web and fabric interpenetration and hold together, and combine firmly;After drying, the polymer surface film is covered on the two sides of base cloth layer, and the polymer surface film is combined with base cloth layer by heating, because the surface of base cloth layer is the same material as the composition of polymer surface film, the material remains consistent, it is convenient for hot forming fusion, thereby increasing the peel strength, and improving the adhesion strength of composite material coating.Moreover, when the hydroentanglement medium is polymer solution, the polymer solution will remain in the pores of fabric and thermoplastic fiber web during the hydroentanglement process, and when subsequent drying and heating, the polymer in the pores will be integrated with the thermoplastic fiber web, thereby further enhancing the peel strength.

The utility model discloses an automobile carpet fixing device, which relates to the technical field of automobile interior accessories and comprises a fixing mechanism mounted in an automobile base through a mounting mechanism. The fixing mechanism comprises a steel needle and a clamping seat, the steel needle is fixedly mounted on the automobile carpet, the clamping seat is detachably mounted on the automobile base through the mounting mechanism, and a mounting part used in cooperation with the steel needle to fix the steel needle is arranged in the clamping seat. The carpet can be prevented from shifting due to vehicle vibration or treading, safety is improved, and meanwhile the steel needles are firm in material, resistant to corrosion and abrasion and not prone to deformation after being used for a long time.

The present application relates to a secondary battery, comprising (1) a positive electrode plate; and (2) an electrolyte solution; wherein a positive electrode active material is an active material having a chemical formula of AxB1-xMeO2 or AxB1-xMPO4 with dications A and B, where Me, M, A, B, and x are as defined in the specification; and the electrolyte solution comprises an electrolyte salt of the dications A and B, where A and B are as defined in the positive electrode active material; as well as a method for preparing a corresponding positive electrode active material, a corresponding battery module, a battery pack, and an electrical apparatus. The secondary battery of the present application comprises a positive electrode active material comprising the dications A and B and an electrolyte solution of a salt of the same dications, which improves the stability of the positive electrode active material and the negative electrode active material, thereby improving the cycling stability of the battery.

The utility model discloses a combined form template with reinforcing structure relates to building template technical field, including multiple sets of wooden main board body, the left and right sides of wooden main board body front end are fixedly connected with side angle iron respectively, the upper and lower ends of wooden main board body front end are fixedly connected with end angle iron respectively. This combined form template with reinforcing structure is provided with wooden main board body, side angle iron, reinforcing angle iron and end angle iron, when using, wooden main board body is as main board body, and the material quality is stable and smooth surface, and the outer pasting type side angle iron, reinforcing angle iron and end angle iron three groups of angle iron increase its overall strength, make it not easy warping deformation, and convenient subsequent connection and secondary reinforcement, the whole no consumption of square wood, and material is easy to turnover utilization, and the cost is lower, realizes the function of simple structure high strength, solves the device square wood consumption low, material turnover rate low problem.

The application relates to the technical field of electrochemistry, in particular to a lithium ion battery, which comprises a positive electrode, a negative electrode and an electrolyte; the positive electrode comprises a positive electrode active material and a conductive agent, the positive electrode active material is a manganese-containing positive electrode material; the electrolyte comprises a compound represented by the following structural formula 1: The positive electrode active material, the conductive agent and the compound represented by structural formula 1 meet the following condition: 0.5≤Dr×Trw≤16 wherein, Dr and Tr are the ratios of the average particle size and specific surface area of the positive electrode active material to the conductive agent, respectively; w is the mass percentage of the compound represented by structural formula 1 in the electrolyte, and the unit is %. According to the application, the compound represented by structural formula 1 is added into the electrolyte, and by adjusting the ratios of specific surface area and particle size of the positive electrode active material to the conductive agent, the structure of the positive electrode material is strengthened through the interface synergistic effect among the three substances, and the interface impedance between the positive electrode material and the electrolyte is weakened, thus reducing the dissolution of manganese, so that the lithium battery has good high-temperature storage performance and high-temperature cycle performance.

The invention discloses a photocatalytic material for synchronously removing composite new pollutants in plateau lakes and a preparation method and application of the photocatalytic material, and relates to the technical field of environmental functional materials, the photocatalytic material is a rare earth metal doped silicon dioxide composite material, and the molar ratio of rare earth metal to silicon is 3-15%; the composite new pollutants comprise micro-plastics, antibiotics and dyes. Rare earth doping is carried out on silicon dioxide, the light response range of the material is effectively widened, the separation and migration efficiency of photo-induced electron-hole pairs is remarkably improved, and therefore synchronous and efficient removal of three kinds of new composite pollutants including micro-plastics, antibiotics and dyes in a water body is achieved at the normal temperature and the normal pressure; the prepared 10% La-SiO2 and other rare earth doped silicon dioxide materials show more excellent photocatalytic activity in a plateau strong ultraviolet environment, and have the comprehensive advantages of low raw material cost, environmental friendliness, no need of complex recovery after use and the like.

A positive electrode active material including a nickel-containing lithium transition metal oxide containing nickel in an amount of 60 mol% or more based on a total number of moles of transition metals excluding lithium, and a coating layer which is formed on a surface of the nickel-containing lithium transition metal oxide and includes a lithium-containing inorganic compound, a nickel oxide, and a nickel oxyhydroxide is provided. A method of preparing the positive electrode active material, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode active material are also provided.

The application relates to the technical field of organic synthesis, and relates to a synthetic process of rifampicin by taking rifamycin O as a starting material, which comprises the following steps: after rifamycin O is hydrolyzed, a cyclization reaction is carried out on the hydrolyzed rifamycin O and dimethylol tertiary butylamine, and crystallization is carried out, so that rifamycin oxazine is obtained; a condensation reaction is carried out on the rifamycin oxazine and 1-methyl-4-aminopiperazine, and crystallization is carried out, so that rifampicin is obtained. Through the above technical scheme, the problems of low raw material output, insufficient purity and complex preparation in the production of rifampicin in the prior art are solved.

The invention discloses an explosion-proof chemical forcible entry rescue machine, and relates to the technical field of forcible entry rescue, a stainless steel forcible entry cutter for forcible entry of articles and an external force rod for additionally applying forcible entry force to the stainless steel forcible entry cutter are mounted in a forcible entry cover, and the external force rod penetrates through an outer sealing ring; the rescue device has the advantages that a double-closed barrier is constructed, external flammable and explosive gas is effectively prevented from entering or internal harmful gas is effectively prevented from leaking, the air in the forcible entry cover is extracted by the extraction pipe to form a low-oxygen environment, the air in the forcible entry cover is prevented from entering the rescue device, and the air in the forcible entry cover is prevented from entering the rescue device. The stainless steel forcible entry cutter as a core component is firm in material and not prone to generating sparks during forcible entry, the risk of spark ignition is eradicated in combination with a low-oxygen environment, the device adapts to complex environments such as combustible gas and dust in chemical places, an external force rod can apply extra forcible entry force, and it is ensured that equipment is attached to a target in the forcible entry process.

The invention relates to the technical field of preparation of electrochemical power source materials, and specifically discloses a preparation method of lithium iron phosphate @ carbon fiber, a positive electrode material of a lithium ion battery. Nitrilotriacetic acid is used to reduce trivalent iron to divalent iron, and the nitrilotriacetic acid is oxidized to carbon fiber: lithium salt, iron salt, phosphoric acid (salt) and nitrilotriacetic acid are weighed and fully mixed in a molar ratio of Li:Fe:P:N(CH2COOH)3=1.0~1.05:1:1:0.2~2, and then placed in an inert atmosphere for high-temperature roasting, and the lithium iron phosphate @ carbon fiber powder is obtained after cooling. Nitrilotriacetic acid is used as a reducing agent and is oxidized into carbon fiber during the reaction process, which improves the conductive performance of the product, reduces electrochemical agglomeration, supports the stability of the material, and obtains excellent electrochemical performance. The invention has a wide range of raw material selection, low production cost, no need for any treatment of reactants and products, no need for inert gas protection during the raw material mixing process, no environmental pollution, and is easy to implement in industry.

The invention relates to the technical field of injection molds, and discloses a demolding deformation prevention injection mold for automobile injection molding part production, which comprises an upper mold, a lower mold arranged at the bottom of the upper mold, and adjusting mechanisms symmetrically arranged in the upper mold, the adjusting mechanism comprises a shell arranged in the shell, a reducing hole formed in the bottom of the shell, an inner ring channel formed in the position, close to the bottom of the reducing hole, of the shell, an outer ring channel formed in the position, close to the outer side of the inner ring channel, of the shell, a ring groove jointly formed in the top of the inner ring channel and the top of the outer ring channel, and double flow channels symmetrically formed in the top of the ring groove. The rotating block is arranged in the annular groove, the worm gear is arranged on the edge of the top of the rotating block, and the worm is arranged on the shell close to the edge of the worm gear. By arranging the adjusting mechanism, the mold supports switching of two modes of sandwich injection molding and mixed injection molding, the requirements of different production scenes are met, and the function of adjusting the sequence of the inner layer and the outer layer of two raw materials in the sandwich injection molding process is achieved.

The application discloses a carbon-based room-temperature superconducting material based on frequency resonance matching and a preparation method thereof. 18 The material is made of a heterogeneous covalent network skeleton composed of three-dimensional porous graphdiyne and C The preparation steps include: using microfluidic technology to programically drop isotopic limited fullerene solution into the skeleton suspension to build component micro-gradual distribution; applying a rotating space electric field in a liquid phase state and using deep ultraviolet light for in-situ crosslinking to solidify the dipole configuration of the polarized molecules; and performing alkali metal localized gas phase intercalation after desolvation. The application realizes resonance matching of the lattice electron transmission frequency and the local polariton vibration frequency through spatial gradient distribution and endogenous chemical stress extrusion, overcomes thermal fluctuation disturbance under normal temperature, and establishes a stable macroscopic quantum coherent state under normal temperature and pressure.

The invention discloses a self-powered small-molecule traditional Chinese medicine ion introduction acupoint patch which sequentially comprises an elastic backing layer, a piezoelectric energy collection layer, a drug-loaded conductive hydrogel layer and a release protection layer from outside to inside, the piezoelectric energy collection layer comprises a rectifier module, and the drug-loaded conductive hydrogel layer is arranged to be a solid ionic gel or semi-interpenetrating network hydrogel film. According to the self-powered small-molecule traditional Chinese medicine iontophoresis acupoint patch and the preparation method thereof, a microencapsulation technology is abandoned, free-state traditional Chinese medicine small molecules are directly adopted, and deep skin penetration is achieved through the high electrophoresis mobility of the free-state traditional Chinese medicine small molecules under a high-voltage electric field; through the design of an integrated flexible rectifying circuit or an asymmetric electrode, piezoelectric alternating current is converted into pulsating direct current, it is ensured that charged medicine is always subjected to one-way electric field force pointing to the deep layer of the skin, and meanwhile low-cost and large-scale manufacturing is achieved.

This application discloses an organic compound and an organic layer, their applications, an organic electroluminescent device, and a display or lighting device, wherein the organic compound has the structural formula shown in Formula I: In Formula I, L1 and L2 are independently selected from substituted or unsubstituted C6-C30 aryl groups and substituted or unsubstituted C3-C30 heteroaryl groups; Ar1, Ar2, and Ar3 are independently selected from substituted or unsubstituted C6-C30 aryl groups and substituted or unsubstituted C3-C30 heteroaryl groups. X is selected from O, S, NR1, CR2R3, and SiR4R5, and R1 to R5 are independently selected from substituted or unsubstituted straight-chain or branched C1 to C30 alkyl groups, substituted or unsubstituted C3 to C30 cycloalkyl groups, substituted or unsubstituted C1 to C30 heteroalkyl groups, substituted or unsubstituted C1 to C30 heterocycloalkyl groups, substituted or unsubstituted C6 to C30 aryl groups, substituted or unsubstituted C3 to C30 heteroaryl groups, or formed into a ring with adjacent atoms. When this organic compound is applied to organic electroluminescent devices, it can significantly improve the current efficiency and lifetime of the device and reduce the operating voltage of the device.

The present invention discloses a control method for avoiding material type jitter in a vertical looper, comprising adjusting the distance H1 from the bottom of a crimping wheel to the inner bottom surface of a guide groove, (1 / 8*L1)≤H1≤(1 / 12*L1), L1 being the horizontal distance between the center point of a lifting roller and the center point of a crimping wheel when the lifting roller is in a horizontal state; adjusting the top of the lifting roller to be initially located below a rolling center line and the distance H2≤(1 / 2*H3) between the top and the rolling center line, H3 being the material type height, and the distance H4=(1 / 20*L2) from the center line of the material type supported by the lifting roller to the inner bottom surface of the guide groove after lifting, L2 being the horizontal distance between two rolling mills; the control method for avoiding material type jitter in a vertical looper of the present invention adjusts the distance between the lifting roller and the crimping wheel so that the material type forms a smooth arc and remains stable, and after lifting, the sleeve height is more stable.