277results about How to "Chemically stable" patented technology

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention relates to the technical field of all-vanadium redox flow batteries, in particular to a sulfonated polybenzimidazole proton exchange membrane as well as a preparation method and application thereof. The proton exchange membrane structurally comprises a polybenzimidazole polymer main chain and a sulfonic acid group, the free volume of the polybenzimidazole polymer is regulated and controlled by synthesizing raw materials with different structures, and the polybenzimidazole proton exchange membrane is obtained by sulfonating the polybenzimidazole polymer. Aiming at the problems of cross permeation of vanadium ion electrolyte of a positive electrode and a negative electrode of the all-vanadium redox flow battery, capacity attenuation of the all-vanadium redox flow battery and low energy conversion efficiency, the preparation method comprises the following steps: constructing a polybenzimidazole polymer main chain by selecting raw materials with high rigidity and high free volume; the mechanical property of the polybenzimidazole membrane is improved while a rapid ion channel is constructed in the polymer membrane, and water molecules can be contained to limit swelling of a membrane material.

The invention belongs to the technical field of photocatalytic materials, and discloses a preparation method of a BiOCl / BiOI composite photocatalyst for visible light degradation of rhodamine B. The energy band structure of BiOCl is regulated and controlled in cooperation with BiOI, and efficient photocatalytic decoloration of rhodamine B with wide spectral response is achieved through S-type interface charge transfer. A petal-shaped BiOCl / BiOI heterojunction with R = 8: 1, a BiOCl0. 88I0. 12 solid solution and a BiOCl0. 8I0. 2 solid solution show excellent visible light catalytic activity, and about 92.52% of rhodamine B molecules, 99.7% of rhodamine B molecules and 99.7% of rhodamine B molecules are respectively degraded by the BiOCl / BiOI heterojunction and the BiOCl0. 88I0. 12 solid solution after being irradiated by visible light for 10 minutes. The catalytic reaction accords with the two-stage one-stage kinetic law, and high photocatalytic efficiency can still be maintained after five times of circulation. The single BiOCl and BiOI respectively degrade about 64.3% and 10.02% of rhodamine B molecules under the same light reaction condition, and the catalytic reaction follows a first-level kinetic model. The preparation method has the advantages of being low in preparation temperature, simple in technological process, stable in chemical property and the like, the large-scale two-dimensional micron / nanosheet and the three-dimensional self-assembly structure of the large-scale two-dimensional micron / nanosheet can be obtained only through a hydrothermal and water bath synthesis technology, and the preparation method has great application value in the field of visible light degradation of organic pollutants.

The invention discloses a gas turbine TCA / FGH large temperature difference driven S-CO2 power cycle system which comprises a gas compressor, a combustion chamber, a gas turbine, a TCA heat exchanger, an FGH heat exchanger, an S-CO2 compressor and an S-CO2 turbine, a hot side inlet and outlet of the TCA heat exchanger is connected with a hot air pipeline, the cold side of the TCA heat exchanger is connected with an S-CO2 working medium circulating device, the hot side of the FGH heat exchanger is connected with the S-CO2 working medium circulating device, and the hot side of the FGH heat exchanger is connected with the S-CO2 working medium circulating device. The cold side of the TCA heat exchanger is connected with a cold natural gas pipeline, the hot side of the TCA heat exchanger absorbs heat of high-temperature air, the air temperature is reduced to a set value, meanwhile, supercritical carbon dioxide after pressure boosting is heated, an S-CO2 turbine is pushed to do work, and natural gas is heated to the set temperature in the FGH heat exchanger. The TCA / FGH temperature difference condition is utilized, the S-CO2 power cycle is driven to output extra electric energy, the peak regulation capacity of the unit is improved, and meanwhile the problem of TCA / FGH heat imbalance is solved.

The invention discloses an amorolfine hydrochloride liniment and a production process. The formula of the amorolfine hydrochloride liniment comprises amorolfine hydrochloride, ethanol, propylene glycol, polyethylene glycol, acrylic resin RL100, glyceryl triacetate, ethyl acetate and butyl acetate. The preparation method comprises the following steps: 1, selecting a solvent material; step 2, generation of an amorolfine raw material; step 3, synthesizing amorolfine hydrochloride; step 4, preparation of the liniment; step 5, quality control; and step 6, packaging and storing. The amorolfine hydrochloride liniment based on the acrylic resin RL100 as the coating and framework material is designed, the specific release requirement of the medicine can be effectively met, ultraviolet rays can be absorbed, erosion of the ultraviolet rays can be effectively resisted, and the service life of the medicine is prolonged; meanwhile, the propylene glycol component is added, so that the stability and solubility of the medicine and the permeability of the medicine are improved; the polyethylene glycol component is also added, so that the smearing property and the use experience of the medicine can be improved.

The invention provides a diphenhydramine hydrochloride injection and a preparation method thereof. According to the preparation method, the diphenhydramine hydrochloride injection with stable pH value, stable chemical property and sterility assurance level SAL less than or equal to 10 <-6 > can be obtained by controlling the material of a liquid medicine pipeline and the water resistance of a medium borosilicate glass ampoule. The diphenhydramine hydrochloride injection does not contain preservatives and cannot generate safety risks.

The invention relates to the technical field of optical fiber manufacturing, and discloses a heavy water vapor replacement device, a spectral measurement system and a method for reducing water peak absorption loss of a hollow-core optical fiber. The method for reducing the water peak absorption loss of the hollow-core optical fiber is realized by using a heavy water vapor replacement device, the effectiveness is verified through a spectral measurement system, the heavy water vapor replacement device comprises a vapor generation assembly, a first gas cavity assembly and a gas extraction assembly, the gas extraction assembly firstly vacuumizes the interior of a fiber core, and the vapor generation assembly generates heavy water vapor; heavy water vapor is filled in a fiber core of the hollow-core optical fiber through the first gas cavity assembly, the heavy water vapor is prevented from being mixed with gas reserved in the fiber core, it is guaranteed that the fiber core of the hollow-core optical fiber is completely filled with the heavy water vapor, an absorption peak is weakened, especially interference to S-band communication is greatly reduced, hydroxyl formed by heavy water molecules has stable chemical properties, and the service life of the hollow-core optical fiber is prolonged. Secondary adsorption of common water vapor is effectively delayed, and the transmission performance of the optical fiber is improved.

The invention relates to a nickel-based methanation catalyst taking a mesoporous molecular sieve SBA-16 as a carrier and application of the nickel-based methanation catalyst in carbon dioxide hydrogenation. The catalyst is prepared by preparing a mesoporous molecular sieve SBA-16 as a carrier, dissolving nickel salt in a solvent, adding an additive, and combining the SBA-16 carrier with nickel metal by an impregnation method. The catalyst has high activity and good stability, especially has excellent performance in a CO2 methanation reaction, can realize high CO2 conversion rate and high CH4 selectivity at a low temperature, and is suitable for reaction conditions with a temperature of 200-400 DEG C and a pressure of normal pressure to 5.0 MPa. The preparation method of the catalyst is simple, does not need precious metal, and has potential industrial application prospects.

The invention relates to the technical field of copper alloy strips, and discloses a vehicle-mounted connector copper alloy strip which comprises the following components in percentage by mass: 0.04 to 0.1 weight percent of Y, 1.5 to 3.5 weight percent of Sn, 0.02 to 0.08 weight percent of P, 0.5 to 2.5 weight percent of carbon nanostructure X and the balance of copper and inevitable impurities, wherein the carbon nano structure X is a compound of a carbon nano tube and fullerene, and the mass ratio of the carbon nano tube to the fullerene is (2-4): 1; the invention also discloses a preparation method. According to the invention, through the comprehensive advantages in the aspects of conductivity and corrosion resistance, the electrical connection function can be stably and reliably realized in a vehicle-mounted connector, powerful hardware support is provided for the intelligent and electric development of an automobile, and the adaptability and safety of the automobile under different working conditions are enhanced; and the maintenance cost of the automobile is reduced, and the downtime caused by faults is shortened.

The invention belongs to the technical field of artificial board manufacturing, and particularly relates to a formaldehyde-free adhesive as well as a preparation method and application thereof, raw materials for preparing the formaldehyde-free adhesive comprise a flowable agent and a filling agent, and the formaldehyde-free adhesive is obtained by combining the raw materials through molecular acting force among the raw materials. The formaldehyde-free adhesive has the advantages of being high in bonding strength, stable in physical and chemical properties and not prone to deterioration, epoxy groups and carboxyl or anhydride groups in the formaldehyde-free adhesive can be directly reacted and coupled with groups on the surfaces of biomass fibers, the surface polarity of the formaldehyde-free adhesive after curing is large, the acting force between the formaldehyde-free adhesive and the biomass fibers is strong, and the formaldehyde-free adhesive is not prone to deterioration. The formaldehyde-free adhesive is high in strength after being cured; in addition, the formaldehyde-free adhesive subjected to complete curing reaction still has reversibility, the formaldehyde-free adhesive can be re-melted after being heated again, leftover materials generated by cutting in the later period of plate making can be subjected to hot pressing plate making without adding glue, secondary utilization of artificial plate waste is facilitated, resources are saved, and the environment is protected.

The invention provides anti-scattering water-guided laser cutting fluid as well as a preparation method and application thereof. The anti-scattering water-guided laser cutting fluid comprises the following components in parts by weight: 0.1-1 part of an anti-scattering agent; 0.01 to 0.1 part of a foam discharging agent; 1-5 parts of a refractive index regulator; and 80-99 parts of ultrapure water. The anti-scattering agent is a polymer; the foam removing agent is one or more of hydroxymethyl cellulose, hydroxy propyl cellulose, sodium lignin sulfonate, potassium lignin sulfonate and naphthalene sulfonic acid formaldehyde condensate sodium salt; the refractive index regulator is an iodine-containing compound and / or a fluorine-containing compound. According to the anti-scattering water-guided laser cutting fluid, light beam scattering and energy loss in the water-guided laser cutting process can be remarkably reduced, and the cutting precision and efficiency are improved. The anti-scattering water-guided laser cutting fluid has very good application prospects and large-scale industrial popularization potential in the field of water-guided laser cutting.

The invention discloses a slow-release temperature-controlled antifouling agent microsphere and a preparation method and application thereof, the method comprises the following steps: (1) mixing sodium alginate, copper pyrithione and a CaCl2 solution for reaction, freeze-drying, grinding and crushing to prepare intermediate product particles; and (2) mixing the intermediate product particles in the step (1) with a chitosan solution for reaction, then adding a glutaraldehyde solution for continuous reaction, and freeze-drying to obtain the antifouling agent microspheres. The sodium alginate and chitosan double-crosslinking preparation method adopted by the invention is novel, a double-layer drug-loading structure is constructed by virtue of the crosslinking effect of sodium alginate and calcium ions and the electrostatic interaction between anions and cations of sodium alginate and chitosan, and the thought is novel.

The invention relates to the technical field of flocculating agents, and discloses a flocculating agent for high-concentration azo printing and dyeing wastewater, which is prepared from the following components in parts by weight: 4 to 5 parts of hydroxypropyl chitosan derivative, 2 to 3 parts of sodium silicate solution, 0.5 to 1 part of sulfuric acid, 2 to 3 parts of ferric sulfate solution, 1 to 3 parts of zinc sulfate solution, and 4 to 5 parts of polyaluminum chloride solution and composite antibacterial agent. The preparation method comprises the following steps: preparing a sodium silicate solution, slowly dropwise adding the sodium silicate solution into sulfuric acid, and activating to obtain a polysilicic acid solution; sequentially adding a ferric sulfate solution, a zinc sulfate solution and a 50-500mg / L polyaluminum chloride solution, and standing and curing to obtain the polysilicate ferric zinc aluminum flocculant. The preparation method comprises the following steps: firstly, preparing a polysilicate ferric zinc aluminum flocculant, then slowly adding a melamine solution, carrying out ultrasonic action to obtain a carbonitrided polysilicate ferric zinc aluminum flocculant, and carrying out carbonitriding treatment on the polysilicate ferric zinc aluminum flocculant combined with metal ions to delay gelation of the polysilicate flocculant, so that the polysilicate flocculant can be stored for a longer time.

The invention provides a flexible ceramic nanofiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: adding polyvinyl alcohol into water, and heating and stirring in a water bath kettle until the polyvinyl alcohol is completely dissolved to obtain a polyvinyl alcohol solution; stirring the precursor material, an acid catalyst and water until hydrolysis to obtain oxide substrate sol; mixing a polyvinyl alcohol solution with the oxide substrate sol, adding a pore forming agent, uniformly mixing, and performing electrostatic spinning to obtain a precursor composite nanofiber membrane; and calcining the precursor composite nanofiber membrane at high temperature to obtain the flexible ceramic nanofiber membrane. According to the prepared flexible ceramic nanofiber membrane, fibers are in a shape similar to sugarcoated haws on sticks, the porosity is high, based on the charge property of the flexible ceramic nanofiber membrane, in the water-induced power generation process, counter ions are generated on the solid-liquid contact surface in an electrolyte aqueous solution and a ceramic fiber channel, and the water-induced power generation efficiency is improved. Good flexibility and stability are shown through flowing potential driving, continuous power generation can be achieved, and high output voltage is obtained.

The invention relates to organic modified magnetic bentonite as well as a preparation method and application thereof, and the organic modified magnetic bentonite is a ternary composite material which takes bentonite as a carrier to load gamma-Fe2O3 magnetic particles and is subjected to surface modification by using an organic modifier 3-(trimethoxysilyl) propyl-N-octadecyl dimethyl ammonium chloride (TPODAC). Compared with the prior art, the organic modified magnetic bentonite disclosed by the invention not only can improve the adsorption performance of pretilachlor, but also can realize rapid magnetic separation of an adsorbent under the condition of an external magnetic field, so that the adsorbent can be recycled for multiple times. The adsorbent organic modified magnetic bentonite has the advantages of efficient adsorption and rapid recovery, the preparation method is simple and easy to implement, and the adsorbent organic modified magnetic bentonite shows great application potential in treatment of pretilachlor wastewater.

The invention relates to the technical field of heat exchange equipment, and discloses an environment-friendly self-cleaning plate heat exchanger which comprises fixed clamping plates, guide rods are installed at the upper ends and the lower ends of the interiors of the two fixed clamping plates correspondingly, a plurality of plate sheets are clamped on the inner sides of the guide rods, and the plate sheets and the fixed clamping plates are attached to each other; a cold outlet and a hot outlet are formed in one side of the outer wall of the fixed clamping plate, a cold inlet and a hot inlet are formed in the other side of the outer wall of the fixed clamping plate, and a self-cleaning mechanism is installed in the sheet bar and used for automatically cleaning an inner channel of the sheet bar. A bubble cleaning mechanism is mounted on one side of the outer wall of the fixed clamping plate and used for introducing carbon dioxide bubbles into the plate to complete cleaning. And tiny bubbles are released through the bubble cleaning mechanism, dirt on the inner wall of the plate is deeply cleaned through the adhesive force of the bubbles and the high-pressure impact force generated when the bubbles are broken, and the continuity and stability of production operation are improved.

The invention relates to the field of lithium ion adsorption, in particular to a lithium ion glass adsorbent and a preparation method thereof. The component of the lithium ion glass adsorbent provided by the invention is Al2O3-SiO2-TiO2-ZrO2-Na2O-K2O-CeO2, and the lithium ion glass adsorbent is prepared from the following raw materials: Al2O3, SiO2, TiO2, ZrO2, Na2CO3, K2CO3 and CeO2; the mass ratio of the Al2O3 to the SiO2 to the TiO2 to the ZrO2 to the Na2CO3 to the K2CO3 to the CeO2 is (5 to 10) to (20 to 40) to (3 to 10) to (2 to 7) to (15 to 35) to (0.01 to 5) to (0.01 to 0.05). The lithium ion glass adsorbent has an excellent lithium ion adsorption effect, and the solution does not generate precipitates after adsorption, so that the lithium ion glass adsorbent has an excellent actual use effect.

The invention relates to the technical field of soil remediation, and particularly discloses an adsorption material, a preparation method thereof and a method for removing heavy metal cadmium in a paddy field, and the preparation method comprises the following steps: (1) treating hollow glass beads with an alkali solution for later use; (2) adding sodium alginate into pure water, and stirring to obtain a sodium alginate solution with the mass fraction of 1-2.5%; and (3) adding the hollow glass beads treated in the step (1) into a sodium alginate solution, uniformly stirring to obtain a hollow glass bead-sodium alginate solution, then sucking the hollow glass bead-sodium alginate solution by using an injector, dropwise adding the hollow glass bead-sodium alginate solution into a 0.1-0.5 mol / L calcium chloride solution, standing for 12-24 hours, filtering, washing and freeze-drying to obtain the adsorption material. The heavy metal cadmium in the rice soil can be effectively removed, secondary pollution cannot be caused, and the adsorption material is beneficial to recycling.

The invention belongs to the technical field of analytical chemistry, and particularly discloses a magnetic fluorescent gold nanocluster molecularly imprinted polymer and a preparation method and application thereof in sulfadiazine fluorescence detection.The surface of Fe3O4 nanoparticles is coated with a silicon dioxide shell layer, the shell layer is subjected to surface modification, and then the Fe3O4 nanoparticles are combined with gold nanoclusters (AuNCs). On the basis, sulfadiazine (SD) is selected as a template molecule by utilizing a molecular imprinting technology, a mixed type silane coupling agent (APTES) is used as a functional monomer, and the surface of the Fe3O4 (at) SiO2 (at) AuNCs is coated with a molecular imprinting layer, so that the magnetic fluorescent gold nanocluster imprinted polymer Fe3O4 (at) SiO2 (at) AuNCs-MIPs is prepared. By combining a magnetic separation technology, high selectivity of the molecularly imprinted polymer, simplicity, convenience and rapidness and high sensitivity of fluorescence detection, sulfadiazine can be accurately and specifically recognized, and the method can be effectively applied to analysis and detection of sulfadiazine.

The invention discloses a shoe material and a preparation method thereof. The shoe material is prepared from the following raw materials in parts by weight: 15 to 25 parts of natural rubber, 30 to 45 parts of butadiene rubber, 18 to 24 parts of solution polymerized styrene-butadiene rubber, 8 to 15 parts of modified inorganic filler, 5 to 8 parts of lubricant, 5 to 10 parts of antioxidant, 2 to 5 parts of plasticizer, 3.5 to 6 parts of vulcanization accelerator, 2 to 4 parts of anti-aging agent and 15 to 25 parts of modified carbon fiber. By modifying the filler white carbon black and the carbon fiber, the compatibility and bonding strength among the white carbon black, the carbon fiber and the rubber base material are improved, so that the mechanical property, the tear resistance, the wear resistance, the skid resistance, the aging resistance, the corrosion resistance and the elasticity of the shoe material are remarkably improved.

The invention discloses traditional Chinese medicine nano hydrogel for treating recurrent oral ulceration as well as a preparation method and application of the traditional Chinese medicine nano hydrogel, and belongs to the technical field of medicines. According to the preparation method disclosed by the invention, the modified daochiSan is introduced into hydrogel prepared from sodium alginate and chitosan to prepare the modified daochiSan iron nano composite hydrogel (FeNPs at DaochiSan hydrogel), and the hydrogel has the characteristics of high mechanical strength, strong stability, high swelling ratio, long adhesion time, oxidation resistance, biocompatibility and the like; by improving the bioavailability, the stability, the targeting property and the controlled release property of the medicine, the compliance of a patient is improved, the treatment effect is improved, and a new way is provided for the inheritance and the application of the traditional modified Daochi powder.

The invention discloses traditional Chinese medicine granules as well as a preparation method and application thereof, and belongs to the technical field of preparation of traditional Chinese medicine granules. The traditional Chinese medicine granules are prepared from extracts of traditional Chinese medicine formula raw materials, a filling agent, a disintegrating agent, a sustained release agent and a flavoring agent, wherein the traditional Chinese medicine formula raw materials are prepared from radix rehmanniae preparata, fructus corni, radix cyathulae, rhizoma alismatis, poria cocos, roasted rhizoma atractylodis macrocephalae, obscured homalomena rhizome, radix clematidis, rhizoma corydalis and liquorice root. The traditional Chinese medicine formula granules with good treatment significance on cartilage repair are obtained, the traditional Chinese medicine formula granules are convenient to carry and store and have positive treatment significance on cartilage repair, the innovative process formula has a slow release effect, and compared with a water decoction, the medicine release time is prolonged, the administration frequency can be reduced, and the life quality of a patient can be improved.

A bionic rock-invading agent for silicate rock crushing and an auxiliary rock-breaking method thereof are provided, wherein an oxalic acid-sodium oxalate buffer solution OA is prepared, which comprises, by weight percentage, 0.6% to 1.1% of oxalic acid and 1.2% to 5.5% of sodium oxalate; a bionic neutral rock-invading agent ON is prepared, and the following four components, by weight percentage, are added to OA in a certain weight ratio: 0.05% to 0.3% of polyacrylamide, 1.0% to 3.1% of triethanolamine, and 0.3% to 5.5% of citric acid. 1.5%, trisodium nitrilotriacetic acid 2.0% to 5.0%, wherein the purity of polyacrylamide is ≥ 99.5%; the purity of triethanolamine is ≥ 99.5%; the purity of citric acid is ≥ 99.5%; the purity of trisodium nitrilotriacetic acid is ≥ 99.5%; during TBM excavation or oil drilling, the configured bionic rock-invading reagent is sprayed from the TBM cutter head to the face or pumped into the hollow of the drill string; thereby degrading the mechanical properties of the rock and achieving mechanical-chemical coupling rock breaking. The bionic rock-invading reagent of the present invention is neutral, has no obvious corrosiveness to mechanical rock-breaking tools, is environmentally friendly and efficient, and is particularly suitable for chemically assisted rock breaking of hard rocks such as silicate rocks.

The invention relates to the technical field of building coatings, in particular to an aerogel anti-condensation coating and a preparation method thereof, and particularly relates to an anti-condensation coating which is high in binding power, capable of being thinly coated and long in effect and a preparation method of the anti-condensation coating. Comprising the following components: 15-50 parts of aerogel, 10-20 parts of a binder, 0.2-1 part of a dispersant, 0.2-2 parts of a defoaming agent, 0.5-5 parts of a leveling agent, 10-50 parts of a silicone acrylic emulsion, 15-50 parts of a thermal insulation material, 2-16 parts of a coalescing agent and 10-30 parts of deionized water. The aerogel has stable physical and chemical properties, and the porous structure of the aerogel can continuously block the temperature and is not easy to form moisture condensation. Meanwhile, the components of the coating are reasonably matched, and all the components have a synergistic effect, so that the coating can keep a good anti-condensation effect in the long-term use process, the frequency of maintenance and re-brushing is reduced, a metal base material is protected from being easily rusted, and the cost and time are saved.

The invention belongs to the technical field of packaging materials, and particularly relates to a packaging material of a low-precipitation ultrahigh-barrier film for an injection and a preparation process of the packaging material. The packaging material comprises a two-layer structure including an antibacterial polyvinyl chloride (PVC) layer and a polyvinyl alcohol (PVA) modified coating layer. The packaging material of the low-precipitation ultrahigh-barrier film for the injection is light in weight, high in strength, high in water and oxygen barrier property and good in chemical stability, has certain mechanical property, is simple in preparation process, adopts safe and non-toxic raw materials, meets the requirements of commercial low-precipitation ultrahigh-barrier film packaging materials, and can be in direct contact with the injection.

The utility model relates to aluminium solution capacitor technical field, and disclose a kind of heat dissipation type high temperature resistant aluminium solution capacitor, including electrolytic capacitor main body and the two pins of installation in electrolytic capacitor main body one end, the outer wall of electrolytic capacitor main body middle portion is equipped with and is fixedly connected with connecting ring, the outer wall of connecting ring is connected with two support assemblies, the other end of two support assemblies is connected with extension assembly, the other end of two extension assemblies is connected with rotating assembly, the inside of two rotating assemblies is connected with cooling plate, the inside of two cooling plates is connected with cooling liquid cavity filled with cooling liquid. This kind of heat dissipation type high temperature resistant aluminium solution capacitor, by setting cooling plate and cooling liquid cavity, cooling liquid (such as transformer oil) filled in cooling plate interior has good thermal conductivity, and chemical property is stable (not with aluminium reaction, long-term sealing does not oxidize), can pass through directly contacting electrolytic capacitor main body surface, quickly absorb the heat generated when working, reduce internal temperature.

The application provides a porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction and a preparation method. The preparation method comprises the following steps: adding 4,4-diamino diphenyl ether and pyromellitic dianhydride into a solvent, uniformly mixing, and preparing a polyamide acid precursor spinning solution; electrospinning the prepared polyamide acid precursor spinning solution to prepare polyamide acid nanofibers; immersing the prepared polyamide acid nanofibers in a mixed metal salt solution containing cobalt salt, lanthanum salt and zinc salt to prepare polyamide acid nanofiber precursors loaded with metal ions; and performing programmed temperature heat treatment on the prepared polyamide acid nanofiber precursors loaded with metal ions in a protective atmosphere to prepare the porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction. The prepared porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction has excellent electrochemical oxygen reduction reaction and oxygen evolution reaction bifunctional catalytic activity.

The invention discloses a method for synthesizing nano magnesium dititanate by a solid phase method, which comprises the following steps: S1, weighing a titanium-containing solid compound, a nano magnesium oxide solid and a hydrolytic alkaline solid compound, uniformly mixing, adding a surfactant, and grinding to obtain a solid mixture; s2, adding a mixed solution with an alcohol-water ratio of 1: 1 into the solid mixture, and grinding to obtain mixed slurry; s3, transferring the mixed slurry into a centrifugal tube, placing the centrifugal tube in a centrifugal machine for centrifugal separation, pouring out supernatant after the centrifugal separation is finished, and obtaining a mixed product after a water washing process and an alcohol washing process are finished; s4, soaking the mixed product in an inorganic acid solution, transferring the soaked mixed product into a centrifugal tube for centrifugal separation, sequentially completing water washing and alcohol washing processes, and then drying to obtain MgO-coated TiO2 with a core-shell structure; s5, carrying out high-temperature calcination on the obtained MgO-coated TiO2 to obtain a nano magnesium dititanate solid; according to the invention, the problems of large particle size and non-uniform chemical composition of the magnesium dititanate powder prepared in the prior art are solved.

The invention discloses an interfacial film, a preparation method thereof and an application of the interfacial film in assembly of a lithium ion battery, the interfacial film comprises the following components: lithium salt, polyvinylidene fluoride and 1-butyl-2, 3-dimethyl imidazole onium chloride, the mass ratio of the lithium salt to the polyvinylidene fluoride to the 1-butyl-2, 3-dimethyl imidazole onium chloride is about 1: 0.9-1.1: 0.9-1.1, preferably about 1: 0.95-1.05: 0.95-1.05, and the mass ratio of the lithium salt to the polyvinylidene fluoride to the 1-butyl-2, 3-dimethyl imidazole onium chloride is 1: (0.9-1.1): (0.9-1.1), preferably about 1: (0.95-1.05). The weight-average molecular mass of the polyvinylidene fluoride is about 90-110 thousand g / mol, the lithium salt is lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) and / or lithium bis (fluorosulfonyl) imide (LiFSI), the purity of the lithium salt is greater than 99.9%, the polyvinylidene fluoride (PVDF) is selected as a polymer matrix, and is compounded with the ionic liquid 1-butyl-2, 3-dimethyl imidazolium chloride (BMMImCl) and the lithium salt, so that the performance of the lithium ion battery is improved. According to the present invention, the novel interfacial film is prepared, and the interfacial film has characteristics of high temperature resistance, chemical stability, excellent ion transmission characteristic, excellent lithium ion adsorption capacity, excellent performance, and wide application prospect in the lithium battery field.

The invention discloses platinum nanoflower particles with uniform particle size and a rapid synthesis method and application thereof. The synthesis method comprises the following steps: uniformly mixing a chloroplatinic acid solution with a reducing agent, and standing; adding a stabilizer into the solution obtained in the previous step, uniformly mixing, and reacting at 10-95 DEG C; and cleaning to obtain the platinum nanoflower particles. The method has the advantages that the repetition rate is high, a large number of platinum nanoflower particles with good morphology can be effectively obtained, raw materials are easy to obtain, process conditions are mild, and popularization of the platinum nanoflower particles is facilitated.