47 results about "Perfluorohexane" patented technology

This invention discloses a Fe-GC@Fe 0 This invention relates to catalysts, their preparation methods, and applications, belonging to the field of water treatment technology. The preparation method of this invention is simple, requires minimal equipment, and yields Fe-GC@Fe catalysts. 0 The catalyst can drive microorganisms in water to metabolize perfluorinated compounds. Under conditions without external energy input, it can effectively remove perfluorinated compounds such as perfluorooctanoic acid, perfluorooctane sulfonic acid, perfluorononanoic acid, and perfluorohexane sulfonic acid from water. The removal rate and defluorination rate both reach more than 80%. Moreover, it is a solid catalyst, which is easy to separate from water, recycle and reuse, and maintain a high removal effect.

The invention discloses a Fe-GL-Fe < 0 > catalyst and a preparation method and application thereof, and belongs to the technical field of water treatment. The preparation method is simple, the requirement for equipment is low, the prepared Fe-GL-Fe < 0 > catalyst can effectively remove perfluorinated compounds such as perfluorooctanoic acid, perfluorooctane sulfonic acid, perfluorononanoic acid and perfluorooctane sulfonic acid in water under the environment atmosphere condition without external energy input, and the removal rate and the defluorination rate are both larger than 95%; the catalyst belongs to a solid catalyst, is convenient to separate from water, is recycled, keeps a high removal effect, and is low in metal ion dissolution rate.

The invention provides a preparation method of alpha, omega-diiodo perfluoroalkane, and belongs to the technical field of iodo perfluoroalkane synthesis. The preparation method disclosed by the invention comprises the following steps: under a protective atmosphere, enabling a nano flower type magnesium fluoride catalyst, 1, 2-diiodo tetrafluoroethane and tetrafluoroethylene to react, so as to obtain 1, 4-diiodo perfluorobutane and 1, 6-diiodo perfluorohexane. The nano flower type magnesium fluoride catalyst has high specific surface area and abundant coordination unsaturated sites, can effectively activate reactant molecule bonding sites, and avoids the problems of side reaction and catalyst deactivation caused by free radical paths; by optimizing the pore structure and reaction conditions of the catalyst, efficient synergistic conversion of IPF-2 and TFE can be realized, and the selectivity and yield of IPF-4 and IPF-6 are remarkably improved. The method provided by the invention has the advantages of mild conditions, safe operation, adjustable product distribution and the like, and meets the requirements of industrial production on high-selectivity fluorine-containing bifunctional compounds.

This invention belongs to the field of lithium-ion battery flame retardant technology, specifically relating to a flame-retardant electrolyte, its preparation method, and its application. The electrolyte comprises: lithium salt, carbonate organic solvent, co-solvent, and flame-retardant additive; the concentration of lithium salt in the electrolyte composed of lithium salt and carbonate organic solvent is 0.5–5 mol / L; the volume ratio of carbonate electrolyte to flame-retardant additive is 100:(1–30); the volume ratio of co-solvent to flame-retardant additive is (4–120):(1–5); the co-solvent is a solvent capable of dissolving the flame-retardant additive, and the flame-retardant additive is a perfluorohexane derivative. This invention proposes introducing a co-solvent that does not interact with lithium ions into the electrolyte. Through the bridging effect of the co-solvent, the insoluble flame retardant is introduced into the conventional electrolyte. The flame-retardant electrolyte prepared by this method does not deteriorate its electrochemical performance due to the addition of the flame retardant, thus solving the problem of incompatibility between the flame-retardant performance and electrochemical performance of lithium-ion battery electrolytes.

The application relates to the technical field of fluorine-containing iodoalkane preparation, in particular to a preparation method of high-carbon-number diiodoperfluoroalkane, which comprises the following steps: reacting tetrafluoroethylene and elemental iodine to generate diiodotetrafluoroethane; and under the action of a catalyst, the diiodotetrafluoroethane is subjected to telomerization reaction with tetrafluoroethylene to generate high-carbon-number diiodoperfluorobutane and diiodoperfluorohexane; and the catalyst is a metal nickel catalyst supported on silicon dioxide. The metal nickel catalyst supported on silicon dioxide is used to make the diiodotetrafluoroethane and the tetrafluoroethylene subjected to telomerization reaction to obtain diiodoperfluoroalkane with higher carbon number. The application has the advantages of simple process, low reaction temperature and the like, and can significantly improve the yield of diiodoperfluorobutane and diiodoperfluorohexane.

To provide composite particles that can efficiently generate ammonia. [Solution] The present invention provides composite particles in which an ammonia-generating compound is supported on a carrier, wherein the carrier is at least one selected from the group consisting of silicon carbide, alumina, titania, silica, zirconia, ceria, silica-alumina, calcia, magnesia, and carbon black, and the ammonia-generating compound is a compound that generates ammonia upon heating, is insoluble in perfluorohexane, and has a specific gravity lower than that of perfluorohexane at 20°C.

The present invention discloses an ultrasound / magnetic resonance dual-mode nanoprobe and its preparation method and application. The preparation method comprises the following steps: S1, preparing iron sulfide nanosheets (FeS) using ammonium ferrous sulfate, trisodium citrate, etc. as raw materials, and resuspending the FeS in ethanol to obtain an FeS ethanol solution; S2, adding perfluorohexane to the FeS anhydrous ethanol solution, and using an ultrasonic crusher under an ice bath to prepare a FeS / PFH suspension; S3, mixing the FeS / PFH suspension with a 1 mg / mL dopamine hydrochloride anhydrous ethanol solution, stirring at room temperature in the dark, and washing with pure water to obtain the final product, FeS / PFH / PDA nanomaterial. The present invention discloses an ultrasound / magnetic resonance dual-mode nanoprobe and its preparation method and application. The synthesis method for preparing the ultrasound / magnetic resonance dual-mode nanoprobe is simple and highly operable; the synthesized product is stable and reproducible, which is beneficial for biomedical research and clinical disease diagnosis.

The invention discloses a cleanliness detection device for perfluoropolyether lubricating oil, and relates to the technical field of lubricating oil cleanliness detection, the cleanliness detection device comprises a body, and a light resistance detection assembly for detecting the cleanliness of an oil sample is installed in the body. According to the invention, the micro vacuum pump and the compressed gas cylinder are cooperatively linked, and pertinent medium selection of a fluorocarbon solvent (such as perfluorohexane) and high-purity nitrogen is matched, so that the detection pipe is firstly efficiently cleaned, and then residual cleaning liquid in the pipeline is thoroughly removed through backflushing and blow-drying, so that the detection deviation caused by oil sample dilution and micro-particle adsorption is fundamentally avoided, and the detection accuracy is improved. The accuracy and authenticity of the cleanliness detection result are greatly improved, the high-precision quality control requirement in the high-end field is met, through the linkage design of the telescopic valve plate, the opening and closing valve plate and other structures, automatic and orderly switching of cleaning, blow-drying, oil sample extraction and detection procedures is achieved, manual intervention of the pretreatment process is not needed, the operation process is simplified, the detection efficiency is improved, and the detection cost is reduced. And the labor cost is reduced.

The invention relates to the technical field of electronic-grade fluorine-containing special gas synthesis, in particular to an electronic-grade hexafluoroethane directional synthesis process based on a composite catalyst, which comprises the following steps: S1, carrying out reflux treatment on activated carbon by hydrofluoric acid-nitric acid mixed liquor, sequentially loading aluminum trichloride, cesium fluoride, lanthanum oxide and graphene quantum dots, and roasting in a nitrogen atmosphere to prepare the composite catalyst; s2, mixing tetrafluoroethylene and hydrogen fluoride in proportion, dehydrating through a molecular sieve, and removing impurities through a nano-zinc oxide coating purification tower; s3, introducing the raw materials into a fixed bed with a guide plate, and carrying out segmented temperature control reaction under the adjustment of a composite catalyst and perfluorohexane; and S4, condensing, alkali-washing and drying the reaction product, and rectifying in a rectifying tower to obtain the electronic-grade hexafluoroethane. And S5, adsorbing the rectification tail gas by a composite adsorbent, and resolving and recycling the raw materials for pretreatment. The process improves the selectivity and purity of hexafluoroethane, prolongs the service life of the catalyst, is good in regeneration effect, reduces energy consumption and raw material loss, reduces wastewater discharge, and meets the requirements of the semiconductor industry.

The invention relates to the technical field of energy recycling, in particular to a multi-temperature-range ice slurry cold storage system for liquefied natural gas cold energy gradient recycling. Comprising a deep cooling stage unit, an intermediate cooling stage unit and a shallow cooling stage unit which are sequentially connected in series in the flowing direction of liquefied natural gas, and each stage unit integrates the functions of ice slurry preparation, slurry separation, dynamic storage and cooling capacity output and is provided with a monitoring regulation and control assembly; the refrigerant circulating mechanism is connected with each stage of unit to form a closed cycle, light liquid toluene is used as a refrigerant to transfer cooling capacity, and a light refrigerant layer, an ice slurry generation base liquid layer and a heavy liquid perfluorohexane isolation liquid layer are arranged in each stage of ice slurry making tank from top to bottom. According to the system and the method, LNG full-temperature-range cold energy release from-162 DEG C to 0 DEG C is adapted through a multi-stage unit, precise energy and mass matching is realized by utilizing freezing point differences of base liquids with different concentrations, ice blockage is avoided by virtue of an immiscible isolation liquid layer, and the energy utilization rate and the operation stability are improved in combination with refrigerant recovery and a real-time monitoring mechanism.

The application discloses a novel fluorocarbon betaine surfactant and a preparation method thereof, and belongs to the field of surfactant synthesis and application. The preparation method comprises the following steps: (1) adding perfluorohexyl ethyl alcohol and tetrahydrofuran into a reaction container, adding sodium hydride, and then adding chloroacetic acid methyl ester drop by drop; after reaction at a high temperature, an intermediate 1 is obtained; (2) adding N,N-dimethyl-1,3-propanediamine into the intermediate 1, and then performing reaction at a high temperature to obtain an intermediate 2; (3) adding a solvent and a sodium salt into the intermediate 2, and then performing reaction at a high temperature of 70-90 DEG C to obtain the novel fluorocarbon betaine surfactant. The novel fluorocarbon betaine surfactant does not contain perfluorooctanoic acid (PFOA) and perfluorohexane sulfonic acid (PFHxS) substances, is green and environment-friendly, has a small influence on the environment, does not have influences on human reproduction, development and immune system, can effectively stabilize foam, is resistant to high temperature, and can improve the fire extinguishing performance of a foam fire extinguishing agent. In the aspect of oil displacement agents, the novel fluorocarbon betaine surfactant can reduce oil-water interfacial tension, stabilize emulsions and improve the recovery efficiency of crude oil.

The present invention discloses perfluorohexane sulfonic acid hapten, antigen, antibody and their preparation method and application, and relates to perfluorohexane sulfonic acid hapten, antigen, antibody, colloidal gold detection device and their preparation and application for detecting perfluorohexane sulfonic acid. The present invention provides a method for preparing artificial antigen by synthesizing perfluorohexane sulfonic acid hapten and antigen coupling carrier protein, as well as antibodies specific to perfluorohexane sulfonic acid produced by the body of experimental animals after immunization. 50 The perfluorohexane sulfonic acid (PFHS) enzyme-linked immunosorbent assay (ELISA) kit or perfluorohexane sulfonic acid (PFHS) colloidal gold test strip prepared from the ELISA kit has the advantages of high sensitivity, strong specificity, low cost, simple operation, short detection time, and long shelf life. It is suitable for on-site rapid detection of PFHS by food safety, environmental monitoring and other departments at all levels.

The embodiment of the application relates to the technical field of medical coating materials, and particularly relates to a method for forming an active coating on the surface of a degradable occlusion device and the degradable occlusion device, the method comprising the following steps: preparing perfluorohexane liposomes loaded with stromal cell-derived factor-1 alpha (SDF-1 alpha); preparing polylactic acid-glycolic acid copolymer@rapamycin@nitric oxide donor nanoparticles; preparing a methacrylated gelatin-tannic acid hydrogel carrier; mixing the liposomes and the nanoparticles into the hydrogel carrier; soaking the degradable occlusion device in the mixture obtained in the previous step, and performing light crosslinking treatment on the mixture, so that an active coating is formed on the surface of the degradable occlusion device. Therefore, comprehensive consideration of "endothelialization repair in the early implantation period - myocardial tissue remodeling after implantation" is realized, controllable time-sequencing repair of the degradable occlusion device on the heart defect site is ensured, and the endogenous functional repair effect of the heart of a patient is improved.

To provide a composition that allows for the crosslinking of fluorine-containing polymers in a short time, and that yields molded articles with low compression set. [Solution] A composition containing a fluorine-containing polymer and composite particles, wherein the composite particles are composite particles on which an ammonia-generating compound is supported, the support is at least one selected from the group consisting of silicon carbide, alumina, titania, silica, zirconia, ceria, silica-alumina, calcia, magnesia, and carbon black, and the ammonia-generating compound is a compound that generates ammonia upon heating, is insoluble in perfluorohexane, and has a specific gravity less than that of perfluorohexane at 20°C.

The application belongs to the field of biological medicine, and discloses a nano-lipid preparation for loading perfluorohexane and an antioxidant, wherein the nano-lipid preparation is a core-shell structure, the core-shell structure takes a phospholipid liposome membrane layer as an outer shell, and perfluorohexane and the antioxidant loaded in the outer shell serve as an inner core; the phospholipid liposome membrane layer is made of hydrogenated lecithin, distearoyl phosphatidyl ethanolamine-polyethylene glycol 2000 and cholesterol; and the application discloses an application of the nano-lipid preparation for loading perfluorohexane and the antioxidant in preparation of a medicine for treating myocardial infarction. The nano-lipid preparation has a suitable particle size, can be passively targeted and enriched to a myocardial infarction site, is stable, has a high encapsulation efficiency, and has a simple administration mode; after the lipid preparation is taken by myocardial cells, oxygen and the antioxidant are released, the oxygen can relieve an anoxic condition of a myocardial ischemia site, and the antioxidant can reduce ROS damage, both of which play a synergistic role, improve the survival rate of ischemic myocardial cells, and improve heart function.

The embodiment of the invention relates to the technical field of medical coating materials, in particular to a method for forming an active coating on the surface of a degradable plugging device and the degradable plugging device, and the method comprises the following steps: preparing a perfluorohexane liposome loaded with stromal cell-derived factor-1 alpha (SDF-1 alpha); preparing nano particles of the polylactic acid-glycolic acid copolymer, the rapamycin and the nitric oxide donor; preparing a methacryloyl gelatin-tannic acid hydrogel carrier; mixing the liposome and the nanoparticles into the hydrogel carrier; and soaking the degradable plugging device in the mixture obtained in the previous step, and carrying out photo-crosslinking treatment on the mixture, so that an active coating is formed on the surface of the degradable plugging device. Therefore, comprehensive consideration of'implantation early endothelial repair-implantation later cardiac muscle tissue remodeling 'is realized, controllable sequential repair of the degradable plugging device on the heart defect part is ensured, and the endogenous function repair effect of the heart of a patient is improved.

The utility model discloses a phase change explosion suppression device for a solid hydrogen storage device, and belongs to the technical field of safety devices or accessories of hydrogen storage devices. The device comprises a liquid storage tank, a liquid inlet pipe, a liquid inlet electric valve, a multi-nozzle liquid spraying pipe, a porous nozzle, a temperature sensor and a stainless steel solid hydrogen tank. The multi-nozzle liquid spraying pipe is inserted into the stainless steel solid hydrogen tank and connected with the liquid inlet pipe through the liquid inlet electric valve, and the rear end of the multi-nozzle liquid spraying pipe is connected with the liquid storage tank. When the temperature sensor detects that the temperature reaches a threshold value, the liquid inlet electric valve is opened, perfluorohexane flows through the liquid inlet pipe from the liquid storage tank and then can flow into the multi-nozzle liquid spraying pipe, high-pressure fine liquid mist is generated through the multi-hole nozzles, and heat can be rapidly absorbed for cooling. According to the utility model, the explosion in a solid hydrogen storage place can be quickly inhibited, the use is more convenient and faster, the safety is improved, and the utilization rate and the safety can be improved as perfluorohexane does not react with hydride.

The invention discloses a Fe-GC-coated Fe < 0 > catalyst as well as a preparation method and application thereof, and belongs to the technical field of water treatment. The preparation method is simple, the requirement for equipment is low, the prepared Fe-GC-coated Fe0 catalyst can drive microorganisms in water to metabolize perfluorinated compounds, perfluorinated compounds such as perfluorooctanoic acid, perfluorooctane sulfonic acid, perfluorononanoic acid and perfluorooctane sulfonic acid in water are effectively removed under the condition that no external energy is input, the removal rate and the defluorination rate both reach 80% or above, and the Fe-GC-coated Fe0 catalyst is suitable for industrial production. And the catalyst belongs to a solid catalyst, is convenient to separate from water and recycle, and keeps a high removal effect.

Provided is a composition containing a fluorine-containing polymer and composite particles, wherein: the composite particles are composite particles in which an ammonia-generating compound is supported on a carrier; the carrier comprises at least one selected from the group consisting of silicon carbide, alumina, titania, silica, zirconia, ceria, silica alumina, calcia, magnesia, and carbon black; and the ammonia-generating compound is a compound that generates ammonia when heated, is insoluble in perfluorohexane, and has a specific gravity smaller than the specific gravity of perfluorohexane at 20°C.

The present invention pertains to: a fluororesin that includes a residue unit represented by formula (1), and a terminal group represented by formula (2); and a fluororesin that includes a residue unit represented by formula (1) and has a transmittance of 50% or more measured at an optical path length of 10 mm and a wavelength of 275 nm when dissolved in perfluorohexane to produce a 10 wt % perfluorohexane solution.In formula (1): Rf1, Rf2, Rf3, and Rf4 each independently represent one selected from the group consisting of fluorine atoms, C1-7 linear perfluoroalkyl groups, C3-7 branched perfluoroalkyl groups, or C3-7 cyclic perfluoroalkyl groups; the perfluoroalkyl groups may have an etheric oxygen atom; Rf1, Rf2, Rf3, and Rf4 may bond to each other to form a ring having 4 to 8 carbon atoms; and the ring may include an etheric oxygen atom.In formula (2), i is an integer of 3-20. The present invention provides: a fluororesin that includes an oxolane ring, has suppressed yellowing after heating and melting, and especially has reduced discoloration, even in molding of thick products; and a method for producing said fluororesin.

The invention relates to a UV insulating coating with a self-extinguishing function for a lithium battery and a construction process thereof, and the UV insulating coating is prepared from the following raw materials in parts by weight: 30-40 parts of a UV curing monomer, 5-10 parts of an active monomer, 12-18 parts of a thermal response microcapsule, 22-28 parts of a modified filler, 4-6 parts of a photoinitiator, 0.3-0.8 part of a flatting agent and 0.3-0.8 part of a defoaming agent, wherein the shell material of the thermally responsive microcapsule is PMMA-b-PAN, and the core of the thermally responsive microcapsule is perfluorohexane. According to the invention, the thermal response microcapsule of which the core is the perfluorohexane is added, the thermal response microcapsule is broken when the lithium battery is on fire, and the released perfluorohexane is vaporized to absorb heat, so that the lithium battery obtains the self-extinguishing performance.

The application relates to the technical field of sampling, in particular to a time-sharing sampling uranium hexafluoride mixed gas sampling system. The system comprises a first sampling device, a second sampling device and a third sampling device which are connected with a sampling pipeline through electromagnetic valves respectively, the sampling outlet of the first sampling device is connected with a first vacuum tank, the first vacuum tank is connected with a vacuum pump, a solid particle sampling membrane is arranged between the sampling inlet and the sampling outlet, the sampling outlet of the second sampling device is connected with a second vacuum tank, the second vacuum tank is connected with a vacuum pump, perfluorohexane solution is arranged between the sampling inlet and the sampling outlet, the sampling outlet of the third sampling device is connected with a third vacuum tank, the third vacuum tank is connected with a vacuum pump, hydrogen fluoride sampling powder is arranged between the sampling inlet and the sampling outlet, and a control unit is used for controlling the electromagnetic valves and the vacuum pumps in the sampling process. The uranium hexafluoride mixed gas sampling system can sample different substances in the uranium hexafluoride mixed gas in a time-sharing and fixed-point mode.

This invention provides a filter membrane and its preparation method. The preparation method includes the following steps: placing a porous filter membrane substrate in an environment containing plasma and a precursor, and performing plasma treatment to obtain the filter membrane; wherein the precursor includes at least one selected from hexamethyldisiloxane, perfluorooctyltriethoxysilane, pentane, ethylene, toluene, perfluorohexane, styrene, divinylbenzene, hexamethyldisiloxane, tetramethylsilane, tetraethoxysilane, tetrafluoroethylene, and hexafluoropropylene. The filter membrane obtained by this preparation method can significantly reduce the swelling rate and simultaneously increase the permeation flux in organic solvents, achieving precise molecular weight cutoff.

The application provides an acoustic phase change nanodroplet for delivering a biological ortho type PDL1 degrading agent and a preparation method and application thereof, and belongs to the technical field of biological medicine. The acoustic phase change nanodroplet for delivering a biological ortho type PDL1 degrading agent comprises an internal core and a shell layer; the internal core of the nanodroplet is perfluorohexane, and the shell layer expresses or comprises RGD and a biological ortho PD1 mutant mPD1. The acoustic phase change nanodroplet can be subjected to liquid-gas phase change; RGD guided NDs can promote drug enrichment in tumor vasculature, and can be seen through ultrasound. Nanodroplet rupture caused by inertial cavitation promotes mPD1 perfusion into tumors, forms a covalent bond with PDL1, and initiates a lysosomal degradation process. The acoustic phase change nanodroplet can effectively deliver a PDL1 degrading agent and overcome drug resistance of an immune checkpoint blocker, and has a better effect of activating immune suppression and tumor growth.

The invention discloses a perfluorohexyl sulfonic acid hapten, antigen and antibody as well as a preparation method and application thereof, and relates to the perfluorohexyl sulfonic acid hapten, antigen and antibody, a colloidal gold detection device as well as preparation thereof and application of the colloidal gold detection device in detection of perfluorohexyl sulfonic acid. The invention provides a method for preparing an artificial antigen from perfluorohexyl sulfonic acid hapten synthesis and antigen coupling carrier protein, and an antibody which is generated by the body of an immunized experimental animal and specifically aims at perfluorohexyl sulfonic acid, the IC50 value of the antibody is 1.08 ng / mL, the linear range is 0.52 ng / mL-2. 3ng / mL, and the detection sensitivity is high. The perfluorohexyl sulfonic acid enzyme-linked immunosorbent assay kit or the perfluorohexyl sulfonic acid colloidal gold analysis test strip prepared by the method has the advantages of high sensitivity, strong specificity, low cost, simplicity in operation, short detection time, long shelf life and the like, and is suitable for on-site rapid detection of perfluorohexyl sulfonic acid by various levels of food safety departments, environmental monitoring departments and the like.

The invention belongs to the technical field of nano-drugs, and particularly relates to an ultrasonic responsive apoptosis bionic targeting nano-carrier delivery material and a preparation method thereof. According to the invention, a beta-cyclodextrin polymer (PCD) is used as a core skeleton, and phosphorylserine (PS) is modified through a phosphate bond so as to enhance the targeting ability; pFH (perfluorohexane) is entrapped as an ultrasonic response core under a low-temperature condition by utilizing interaction of a subject and an object; liposome (soya bean lecithin and cholesterol) is used for outer layer coating, so that the in-vivo stability and the circulation half-life period of the system are remarkably improved, and the breakthrough of the PCD-PS system from local administration to systemic administration is realized for the first time; the system has excellent ultrasonic responsiveness, and can be accurately triggered at a targeted part and release contents; meanwhile, the apoptotic cell imitating design endows the system with active targeting property, and the dual-coating structure ensures the stability of in-vivo circulation, so that the synergistic interaction of stable circulation, active targeting and ultrasonic triggering is realized.

The application discloses a kind of radiation-resistant sealing materials for photoetching process and preparation method thereof, belong to high molecular sealing material technical field.The material is made of fluorine rubber raw rubber, 1-iodine perfluorohexane or 1-iodine perfluorooctane, reinforcing filler, bisphenol AF vulcanizing agent and benzyl triphenyl phosphonium chloride accelerator, etc.According to specific weight part, it is made by batch dropwise mixing and gradual temperature two-step vulcanization.The application utilizes perfluoroalkyl iodide under plasma C-I bond preferentially homolysis generates I·, terminates fluorine rubber free radical chain degradation;And through theoretical calculation and ion chromatography verification, ensure that processing process does not decompose, no corrosive iodine ion release in service.The application breaks the application technology prejudice of halogen, solves the defect that conventional fluorine rubber particle releases high, plasma life is short, avoids the problem that perfluoroether rubber is high in cost and difficult to process, the obtained material is low in particle release amount, long in radiation life, small in compression permanent deformation, adapts to 7nm and below node semiconductor equipment sealing demand, easy to scale up.

This application relates to a process for preparing fluorinated liquids, specifically a method and apparatus for preparing perfluorohexane. The method involves first reacting hexafluoropropylene with a fluorine-containing gas to obtain crude perfluorohexane; then subjecting the crude perfluorohexane to primary and secondary alkaline washing, followed by water removal; and finally, primary and secondary condensation. The primary condensation yields the product perfluorohexane, while the secondary condensation recovers hexafluoropropylene for recycling. The apparatus comprises a reaction tower, a buffer tank, a primary alkaline washing tower, a secondary alkaline washing tower, a drying tower, a first cold trap, and a second cold trap, connected in sequence. This application features a simple production process, high hexafluoropropylene conversion rate, high product purity, and low overall cost, demonstrating good economic benefits and application prospects.

The invention provides a perovskite solar cell, a preparation method thereof and a photovoltaic product. The perovskite solar cell comprises a conductive substrate, a first charge transport layer, a modified perovskite light absorption layer, a second charge transport layer and an electrode which are sequentially stacked, the modified perovskite light absorption layer contains a perovskite material and a composite additive, and the composite additive comprises potassium perfluorobutanesulfonate and potassium perfluorohexane sulfonate. According to the invention, potassium perfluorobutanesulfonate and potassium perfluorohexane sulfonate are used as additives, and the potassium perfluorobutanesulfonate and the potassium perfluorohexane sulfonate cooperate to passivate and jointly adjust defect concentration, so that phase degradation of perovskite is hindered, and the quality of the perovskite thin film is remarkably improved. Through the passivation strategy, the efficiency and the stability of the battery are greatly improved, and a foundation is laid for commercial production.

The invention belongs to the technical field of medical materials, and discloses a targeted oxygen-carrying and drug-carrying hollow gold nanosphere connected with a photosensitizer and a preparation method thereof. The preparation method comprises the following five steps: preparing hollow gold nano-spheres, coupling folic acid, conjugating Ce6, carrying Dox and carrying oxygen, so that the hollow gold nano-particles connected with a photosensitizer Ce6 and folic acid with a targeting effect are successfully loaded with oxygen-containing perfluorohexane and a chemotherapeutic drug doxorubicin. The invention provides an efficient and safe tumor oxygenation strategy, develops a tumor specific targeting nano artificial oxygen carrier, realizes tumor oxygen supply, and solves the problem of poor curative effects of chemotherapy and photodynamic therapy caused by oxygen deficit.