10295 results about "Fluorine containing" patented technology

The invention relates to a battery monomer, a battery device and a power utilization device, the battery monomer comprises an electrode assembly and an electrolyte, and the electrode assembly comprises a positive pole piece and a negative pole piece; the positive pole piece comprises a positive pole current collecting part and a positive pole film layer; the positive pole film layer comprises lithium-containing phosphate with an olivine structure; the negative pole piece comprises a negative pole current collecting part and a negative pole film layer, and the negative pole film layer comprises a carbon-based material; the electrolyte comprises a carboxylic ester solvent, a first additive and fluorine-containing lithium sulfimide, and the mass content of the carboxylic ester solvent is 8%-60%; the total mass content of the first additive is 2.5%-10%, the first additive comprises 1, 3-propane sultone with the mass content larger than or equal to 0, an ethylene carbonate derivative with the mass content larger than or equal to 0 and vinylene carbonate with the mass content larger than 0, and the ethylene carbonate derivative comprises a compound shown in the formula A; the mass content of the fluorine-containing lithium sulfimide is 4%-8%. According to the invention, the rapid charging performance and the cycle performance of the battery monomer can be improved. # imgabs0 # formula A

The present invention discloses a water-based emulsion of PHA, PBAT and PVOH and its application in paper-based barrier coatings. This emulsion is prepared by first melt-blending PHA and PBAT at 150-170 °C and then dispersing them into an aqueous PVOH solution at 80-95 °C. Plasticizers, cross-linking agents and surfactants can be added to improve the performance. After coating on paper and drying at 80-150 °C, a barrier film with a Cobb value of 10-15 g / m² and a Kit ≥ 10 grade is formed. Compared with traditional PE film laminating or fluorine-containing coatings, this system is more environmentally friendly and recyclable; PVOH dissolves in pulping water, PHA and PBAT are easily separated, and fibers can be efficiently recovered; in composting, soil and marine environments, PHA and PBAT have extensive biodegradability and are superior to PLA which is difficult to recycle and requires industrial composting. It is applicable to food, industrial, special packaging and agricultural paper products.

The invention belongs to the technical field of battery electrolytes, and particularly relates to a gel polymer electrolyte as well as a preparation method and application thereof. The gel polymer electrolyte is prepared through in-situ polymerization, and the electrolyte is composed of a monomer, a cross-linking agent, an initiator, an organic solvent and a lithium salt. The monomer is selected from fluorine-containing monomers such as trifluoroethyl acrylate, 2, 2, 3, 3-tetrafluoropropyl methacrylate and the like, and the cross-linking agent is selected from NH-containing cross-linking agents such as N, N '-methylene bisacrylamide, hexamethylene bisacrylamide and the like, so that a polymer side chain fluorine-containing functional group is formed in situ and interacts with lithium ions, and lithium ion transmission is promoted; and the NH functional group on the main chain limits the migration of anions, so that the ion migration number is increased. Therefore, the copolymerized fluorine-containing monomer and nitrogen-containing cross-linking agent gel polymer electrolyte enables the battery to show good specific discharge capacity and cycling stability under high current density.

The invention discloses a preparation method of a fluorine-containing carbazole phosphonic acid compound, which solves the technical problems of harsh reaction conditions, high raw material price and low yield in the existing preparation process, 4-trifluoromethoxyaniline and 4-trifluoromethoxyiodobenzene are used as initial raw materials, and Ullmann reaction is performed under a solvent-free condition to obtain 4, 4 '-difluorocarbazole phosphonic acid. The preparation method comprises the following steps: taking 3, 4 '-bis (trifluoromethoxy) diphenylamine as a raw material, carrying out palladium acetate catalytic oxidation cyclization to obtain 3, 6-bis (trifluoromethoxy) carbazole, reacting the 3, 6-bis (trifluoromethoxy) carbazole with 2-bromoethyl dimethyl phosphonate to obtain N-(2-ethyl dimethyl phosphonate) 3, 6-bis (trifluoromethoxy) carbazole, and finally hydrolyzing to obtain the N-(2-ethyl phosphonate) 3, 6-bis (trifluoromethoxy) carbazole. The reaction process is simpler to operate, the yield is guaranteed, and the method is suitable for large-scale production. In the preparation method disclosed by the invention, a solvent is not required to be used in multiple steps, the reaction is performed under a solvent-free condition, and the preparation method is high in safety and environment-friendly.

A production method for an aqueous dispersion according to the present invention comprises polymerizing a first monomer that includes tetrafluoroethylene in the presence of a compound represented by formula (X) and a polymerization initiator under conditions in which an aqueous medium is present but an emulsifier that includes fluorine atoms is substantially absent to produce an aqueous dispersion that includes particles of a first fluorine-containing polymer that has an average particle diameter of no more than 500 nm and does not have a melting point.　Formula (X): C(X1)(X2)=C(X3)-L-Z. In formula (X), X1, X2, and X3 are each independently a hydrogen atom, a fluorine atom, a perfluoromethyl group, or an alkyl group, L is a single bond or a divalent linking group, and Z is an anionic group or a salt of an anionic group.

The invention provides a sodium ion battery electrolyte additive and a composition thereof, an electrolyte and a sodium ion battery containing the electrolyte. The additive is a fluorine-containing cyclic sulfate compound, the composition comprises fluorine-containing cyclic sulfate and other additives, and the fluorine-containing cyclic sulfate has a structure as shown in a formula (I): # imgabs0 # formula (I); the sodium-ion battery electrolyte comprises an organic solvent, a sodium salt electrolyte, the additive and any one composition of the additive, the sodium-ion battery comprises a positive electrode material, a negative electrode material and any one of the combined electrolyte. As the fluorine-containing additive has a relatively low HOMO energy level, the oxidation resistance of the non-aqueous electrolyte can be improved, and the electrochemical window of the non-aqueous electrolyte is widened; meanwhile, the cyclic sulfate participates in the formation of a negative electrode SEI film, so that the electrode interface is stabilized, and the impedance of the negative electrode surface can be remarkably reduced, thereby reducing the overall impedance of the battery, improving the rate capability and high-temperature performance of the battery, and prolonging the cycle life of the battery.

The invention provides a positive electrode, a low-temperature electrolyte, a low-temperature sodium-ion battery and a preparation method and application of the low-temperature sodium-ion battery, and belongs to the technical field of battery materials. The low-temperature sodium ion battery comprises a positive electrode, a negative electrode and a low-temperature electrolyte, wherein the positive electrode comprises a positive electrode active material, a binder, sodium salt containing fluorine and sulfur and conductive carbon; the positive electrode is improved by adding sodium salt containing fluorine and sulfur, sulfur / fluorine rich in anion derivatives can be formed on a contact interface of the positive electrode and an electrolyte to form a firm SEI film, the internal resistance of the battery is further reduced, and the coulombic efficiency of the battery during charging and discharging at normal and low temperatures is improved. The low-temperature electrolyte comprises an ester solvent and an ether additive, by adding the ether solvent, the physicochemical property of the electrolyte and the composition of an SEI film on a contact interface of an electrode and the electrolyte are optimized, the viscosity of the electrolyte at low temperature is reduced, the ionic conductivity is improved, and formation of the SEI film rich in sodium fluoride on the surface of a negative electrode can be promoted; and thus, the problem of low coulombic efficiency of battery charge-discharge cycle at low temperature is solved.

The invention relates to the technical field of protective films, in particular to a low-viscosity low-climbing polyurethane optical protective film and a preparation method thereof. The preparation method comprises the following steps: carrying out sulfydryl-alkene click reaction on double-bond-containing hyperbranched polyester, 1H, 1H, 2H, 2H-perfluorodecanethiol and sulfydryl-containing organic silicon, and introducing a fluorine-containing chain segment and a siloxane chain segment to obtain modified hyperbranched polyester; then introducing the modified hyperbranched polyester into polyurethane through a grafting modification method, so as to prepare the polyurethane adhesive; and coating the surface of a base material with the polyurethane adhesive, compounding with a release film, and curing to obtain the polyurethane optical protective film. The polyurethane optical protective film prepared by the invention has excellent low viscosity and low climbing performance, can effectively protect the surface of an optical device from being polluted and damaged, and improves the service life and stability of the optical device.

The invention belongs to the technical field of organic silicon coatings, and discloses a weather-resistant self-cleaning organic silicon coating as well as a preparation method and application thereof. The weather-resistant self-cleaning organic silicon coating is prepared from the following components in parts by weight: 50 to 100 parts of alpha, omega-dihydroxy polysiloxane; 20 to 50 parts of alkoxy modified fluorine-containing polysiloxane; 20 to 30 parts of MQ silicon resin; 0.01 to 0.05 part of a catalyst; and 100 to 250 parts of solvent oil. According to the organic silicon coating disclosed by the invention, specific alkoxy modified fluorine-containing polysiloxane is added as a hydrophobic modifier, so that the hydrophobic self-cleaning effect and adhesive force of a coating film can be remarkably improved. MQ silicon resin is adopted to replace conventional silicon dioxide to serve as reinforcing filler, compatibility of the MQ silicon resin and a silicon rubber matrix is better, the transparency of a coating film can be remarkably improved, and the application effect of the MQ silicon resin in the surface of a photovoltaic panel is improved.

Monoorgano tin trialkoxide compounds having chemical formula R'SnX3 and containing less than about 5 mol% R'2SnX2are described. R' is an optionally substituted organic substituent having about 1 to about 20 carbon atoms and each X is independently ORf, wherein Rf is a fluorinated organic substituent having about 1 to about 20 carbon atoms. Methods for synthesizing and purifying these compounds are also provided. The monoorgano tin compounds may be used for the formation of high-resolution EUV lithography patterning precursors and are attractive due to their high purity and minimal concentration of diorgano tin impurities.

Disclosed in the present invention is a process for deeply removing fluorine from wastewater by means of an induced crystallization method in sludge backflow. The process comprises the following steps: step 1. placing lime powder and deionized water in a seed crystal reactor to prepare lime milk and at the same time putting a calcite seed crystal into the seed crystal reactor; step 2. introducing high-concentration fluorine-containing acidic wastewater into a reactor; and step 3. introducing the lime milk obtained in step 1 into the reactor in step 2 to undergo a reaction, wherein during the reaction, the pH value of the mixed solution is controlled to remain neutral. The present invention is based on a high-density sludge method (HDS process). By utilizing the HDS process, the advantages of effectively improving the sludge density, reducing the lime consumption, facilitating the operation, and enabling the water quality of an effluent to be more stable are realized. In conjunction with induced crystallization technology, an induced crystallization process in a high-density sludge backflow is formed to promote precipitation and crystallization and allow sedimentation to proceed quickly, thereby shortening the process time and overcoming the defects of traditional lime precipitation methods.

The invention provides a double-layer polymer solid electrolyte, a preparation method thereof and a lithium ion battery, and belongs to the technical field of solid electrolyte manufacturing. The first polymer solid electrolyte layer comprises the following raw materials in parts by weight: 4-30 parts of a first reactive monomer A, 5-25 parts of a first reactive monomer B, a first cross-linking agent, a first photoinitiator, a first lithium salt, 1-20 parts of a first carbonic ester plasticizer and 20-45 parts of a nitrile plasticizer; the second polymer solid electrolyte layer comprises the following raw materials in parts by weight: 4-30 parts of a second reactive monomer A, 5-25 parts of a second reactive monomer B, a second cross-linking agent, a second photoinitiator, a second lithium salt, 1-35 parts of a second carbonic ester plasticizer and 10-35 parts of a fluorine-containing plasticizer; the double-layer polymer solid electrolyte has the advantages of relatively high ionic conductivity and compatibility of a high-voltage battery positive electrode and a low-voltage lithium metal negative electrode, so that the corresponding battery has relatively excellent cycle performance and relatively high capacity.

A fluoroelastomer production method including a step in which monomers A comprising a compound represented by CX1X2=CX3-L-Z, a cyano-group-containing monomer, and at least one compound selected from the group consisting of tetrafluoroethylene, fluorine-containing vinyl ethers, and fluorine-containing allyl ethers are polymerized in an aqueous medium under conditions that substantially no fluorine-atom-containing emulsifier is present.

The present invention relates to a lithium-ion battery diaphragm modified by high-temperature fluorine-containing liquid crystal polymer and polyvinylidene fluoride, and a preparation method and application thereof. The lithium-ion battery diaphragm of the present invention comprises a base diaphragm and a modified coating coated on the surface of the base diaphragm, wherein the modified coating comprises a fluorine-containing liquid crystal polymer and polyvinylidene fluoride. The present invention forms a modified coating by mixing and dissolving the two materials in a suitable solvent, which significantly improves the thermal stability, chemical stability, mechanical strength and ionic conductivity of the diaphragm, thereby improving the safety performance and cycle life of the battery.

The invention discloses a deep defluorination sludge backflow method and a defluorination agent preparation method, and particularly relates to the technical field of sewage treatment.The deep defluorination sludge backflow method comprises the following steps that fluorine-containing waste water is introduced into a mixing cavity through flow regulation for a continuous flow defluorination reaction, polyaluminum chloride, anhydrous calcium chloride and sodium chloride serve as the defluorination agents, the water inflow amount is added, and the defluorination reaction is completed; and reducing the pH value in the wastewater to a set threshold value. The sludge reflux rate is predicted through the effluent fluorine concentration and the sludge concentration, when the effluent fluorine concentration exceeds the set threshold value, the reflux rate is increased to ensure the fluorine ion removal efficiency, and when the sludge concentration exceeds the set threshold value, the reflux amount is reduced, and the situation that excessive sludge in the reaction tank affects the action of a medicament is avoided; the method has the advantages that the fluorine ions in the wastewater can be effectively removed and the wastewater can reach the emission standard by accurately calculating the chemical dosage, dynamically feeding back and adjusting and controlling the sludge backflow rate through real-time monitoring data and dynamically adjusting a regression model.

A method of fabricating a field effect transistor (FET) over a substrate that includes: growing a doped p-type semiconductor from a silicon nanosheet of the substrate, the substrate including a layer stack of alternating layers of the silicon nanosheet and a sacrificial layer, and a dummy gate formed over the layer stack, the layer stack including a trench exposing sidewalls of the layer stack, the doped p-type semiconductor and the sacrificial layer being separated by a dielectric inner spacer; removing the dummy gate; and etching the sacrificial layer selectively to the doped p-type semiconductor, the etching including exposing the substrate to a process gas including a fluorocarbon and a fluorine-containing etch gas in the absence of plasma.

The invention relates to the technical field of batteries, in particular to a lithium ion secondary battery. The lithium ion secondary battery comprises a negative plate and electrolyte, the negative plate comprises a negative current collector and a negative active layer located on at least one side surface of the negative current collector, the negative active layer comprises a first coating and a second coating which are arranged in the thickness direction of the negative plate, and the first coating is located between the negative current collector and the second coating; the second coating comprises first silicon carbon, and the sphericity degree of the first silicon carbon is 0.8-1; the silicon content of the first silicon carbon is 30%-60%; the average particle size of the first silicon carbon is R1, and R1 is more than 6 microns and less than or equal to 15 microns; the electrolyte comprises a fluorine-containing solvent and a nitrile compound, the fluorine-containing solvent comprises fluoroethylene carbonate and / or ethyl difluoroacetate, based on the total weight of the electrolyte, the content of the fluorine-containing solvent is w1, and w1 is larger than or equal to 30% and smaller than or equal to 70%; the content of the nitrile compound is w2, and 0.4% < = w2 < = 7%. The lithium ion secondary battery provided by the invention has good cycling stability and dynamic performance at high voltage and high temperature.

The invention relates to the technical field of phosphorus-containing and fluorine-containing wastewater treatment, provides a phosphorus and fluorine removal agent and a preparation method thereof, and solves the problems that an existing phosphorus and fluorine removal agent is high in manufacturing and using cost, poor in fluorine removal effect and likely to cause secondary pollution due to the fact that the existing phosphorus and fluorine removal agent is greatly influenced by pH. The dephosphorization and defluorination agent is composed of calcium chloride, calcium oxide and active magnesium oxide; the preparation method comprises the following steps: preparing calcium chloride, calcium oxide and active magnesium oxide according to purity and particle size; mixing calcium chloride, calcium oxide and active magnesium oxide according to the molar ratio; adding active magnesium oxide into the premixed calcium chloride and calcium oxide according to the mass ratio of calcium oxide to calcium chloride to active magnesium oxide of 1: 2: (7-12); the mixed powder is subjected to refining treatment through a fine grinding machine, and the refined powder is subjected to secondary screening; and sealing, packaging and storing the refined powder. The use condition is simple, and only active magnesium oxide is required to be mixed with calcium oxide and calcium chloride in proportion.

The embodiment of the invention provides a liquid cooling working medium, the liquid cooling working medium is used for carrying out immersed liquid cooling heat dissipation on electronic equipment, and the liquid cooling working medium comprises the following components in parts by mass: 94-100 parts of fluorinated liquid, 0-5 parts of heat-conducting powder and 0-1 part of a stabilizer, the heat-conducting powder is heat-conducting powder treated by a surface treating agent, and the surface treating agent is a fluorine-containing silane coupling agent; the heat-conducting powder with a certain proportion content is added into the liquid cooling working medium with the base liquid being the fluorinated liquid, so that the heat-conducting property of the prepared liquid cooling working medium is superior to that of a common product.

The invention relates to the field of oil well opening and killing fluid production, in particular to a solid-free well killing fluid for shale oil reservoir and a preparation method of the solid-free well killing fluid. The solid-free well killing fluid for the shale oil reservoir comprises the following raw materials in parts by mass: 50-70 parts of water, 10-30 parts of a density regulator, 3-6 parts of a copolymer tackifier, 1-3 parts of a dispersant, 3-7 parts of a filtrate reducer and 2-4 parts of a corrosion inhibitor. The copolymer tackifier is obtained by initiating copolymerization by taking acrylamide, a quaternary ammonium salt-containing monomer, an unsaturated silane coupling agent and polyethylene glycol diacrylamide as monomer free radicals, and the dispersing agent comprises gas-phase nano silicon dioxide and a fluorine-containing surfactant. Through reasonable compatibility of all the components in the formula, especially the copolymer tackifier, the effect that one agent has multiple functions is achieved, and meanwhile the high temperature resistance, the corrosion inhibition performance and the clay stability of the well killing fluid are improved.

The invention discloses a comprehensive treatment system and treatment method for industrial wastewater containing organic fluorine, electrocatalytic oxidation is carried out through an electrocatalytic oxidation reactor in a physicochemical treatment area, the toxicity of the wastewater containing fluorine is effectively reduced, chain scission is carried out on fluorine-containing organic matter macromolecules, the biodegradability of the wastewater containing fluorine is improved, and the treatment effect is good. The fluorine removal reaction sedimentation tank and the calcium removal reaction sedimentation tank are sequentially adopted to effectively remove most fluorine ions and excessive calcium ions, so that the fluorine ion concentration of the fluorine-containing wastewater reaches 10 mg / L, the biological reaction area and the rear fluorine removal guarantee area are arranged at the rear end, the fluorine ion concentration of effluent is further reduced, fluorine removal is effective, operation is easy and convenient, and the cost is low.

The embodiment of the invention provides a preparation method of a negative electrode active material, the negative electrode active material, a battery and equipment. Fluorine-containing gas is used as discharge gas, and discharge current is introduced into a plasma treatment device in the process of performing vibration dispersion treatment on a porous carbon substrate through the plasma treatment device; the fluorine-containing gas is used for carrying out plasma discharge treatment on the porous carbon matrix, so that the fluorine element provided by the fluorine-containing gas can react with carbon atoms on the surface of the porous carbon matrix to form chemical bonding, and the chemical bonding uniformity between the fluorine element and the carbon atoms on the surface of the porous carbon matrix can be improved; and the preparation cost of the negative electrode active material can be reduced, and the preparation efficiency of the negative electrode active material is improved, so that the battery capacity and the cycle performance of a secondary battery prepared from the negative electrode active material disclosed by the embodiment of the invention can be improved.

The present invention relates to the technical field of coatings. Disclosed are a coating composition having mold-proof and antibacterial properties and a preparation method therefor. The coating composition comprises the following raw materials: an acrylic resin emulsion, a curing agent, a coalescing agent, a defoaming agent, and a leveling agent, wherein the acrylic resin emulsion is prepared from an acrylate monomer, a cross-linking agent, and fluorine-containing silicone oil by means of free radical polymerization under the action of an initiator. A gemini-type quaternary ammonium salt functional group in the structure of the cross-linking agent can enable the coating to have good mold-proof and antibacterial effects, the presence of the ether bond can enable the coating to have better adhesive force, and the presence of the fluorine-containing silicone oil can enable a coating film formed by curing the coating to have a super-hydrophobic surface, thereby avoiding surface moisture which promotes bacterial growth and reproduction, and endowing the coating with antifouling and self-cleaning effects. In addition, the silicon-oxygen bond in the silicone oil can effectively enhance the heat resistance of the coating, thereby facilitating further application of the coating in indoor decoration.

The invention discloses an adsorption coupling contact precipitation defluorination system and a defluorination method, and the method comprises the following steps: feeding fluorine-containing mine water into a defluorination reaction tank, and carrying out adsorption defluorination on the fluorine-containing mine water through a defluorination filter material layer to obtain first defluorination mine water; feeding the calcium agent and the phosphorus agent according to the formula ratio into a fluorine removal reaction tank, removing fluorine through a catalytic reaction to obtain second fluorine-removed mine water, and then feeding the obtained second fluorine-removed mine water into a clean water tank; when the head loss of the second defluorination mine water exceeds a threshold value, feeding backwashing water and backwashing air into a defluorination reaction tank, and backwashing a filter material in a defluorination filter material layer; feeding the regenerated liquid into a defluorination reaction tank, soaking a defluorination filter material layer for 10-12 hours, and then discharging generated waste liquid into a lime reaction tank. According to the method disclosed by the invention, through adsorption, contact precipitation and regeneration, the carbon-based apatite adsorbed with fluorine ions in the defluorination reaction tank is used as a seed crystal for subsequent contact precipitation, so that the service time of a filter material in a defluorination filter material layer is effectively prolonged, and the regeneration frequency of the filter material is reduced.

The invention relates to the technical field of heavy anti-corrosion coatings, in particular to a graphene enhanced epoxy modified organic silicon resin heavy anti-corrosion powder coating. The coating is prepared from the following components in parts by weight: 42 to 58 parts of epoxidized epoxy modified organic silicon resin, 0.8 to 2.5 parts of hydroxylated graphene, 6 to 11 parts of nano zirconium dioxide coated boron nitride, 2.5 to 5.5 parts of lanthanum iso-octoate-titanate composite coupling agent, 1.5 to 3.5 parts of bis (3-triethoxysilylpropyl) disulfide, 4 to 7 parts of polyhedral oligomeric silsesquioxane, 5 to 8 parts of curing agent, 0.8 to 1.8 parts of flatting agent and 0.4 to 0.9 part of defoaming agent. 2.5 to 4.5 parts of polyether-ether-ketone micro powder and 1.2 to 2.8 parts of fluorine-containing phosphate ester. According to the invention, the resin is modified through chemical bridging, the modified graphene and the nano-coated powder are matched to construct a synergistic enhancement system, and the interface bonding is optimized by the composite coupling agent. The coating is excellent in adhesive force, corrosion resistance and mechanical property, good in processing fluidity and high in aging resistance and thermal stability, solves the problem that a traditional product is short in performance, and meets the industrial requirement.

The invention relates to the field of lithium ion batteries, in particular to a fluorine-containing soluble polyimide adhesive special for a lithium battery and a preparation method and application of the fluorine-containing soluble polyimide adhesive. The fluorine-containing polyimide is prepared by reacting dianhydride and diamine, the dianhydride comprises 4, 4 '-hexafluoroisopropyl phthalic anhydride (6FDA), the diamine comprises 4, 4'-diaminodiphenylamine (NDA), and the structural formula of the fluorine-containing polyimide (6FDA-NDA) is # imgabs0 #. The electrode material prepared from the adhesive material obtained by the invention has the characteristics of low impedance and high adhesion, the assembled lithium battery shows higher magnification, and the adhesive material shows excellent magnification performance and adhesion performance when being applied to the lithium ion battery, especially a silicon-containing negative electrode lithium ion battery, and has a good industrial prospect.

The invention belongs to the technical field of new energy, and discloses a preparation method and application of a LiaMXb-based composite solid electrolyte membrane, and the preparation method comprises the following steps: S1, carrying out spray drying on a mixed solution in which a Li source, an M source and an ammonium salt are dissolved, placing the mixed solution in a crucible of which the bottom is paved with the ammonium salt, and annealing for 2-10 hours at 350-800 DEG C in an inert atmosphere to obtain a LiaMXb solid electrolyte; s2, mixing the LiaMXb solid electrolyte with a fluorine-containing monomer A and a dispersing agent, and performing spray drying to obtain electrolyte powder wrapped by the fluorine-containing monomer A; s3, ball-milling and uniformly mixing the electrolyte powder wrapped by the fluorine-containing monomer A, a lithium salt, a thermal curing agent and a monomer B in an inert atmosphere to obtain composite electrolyte powder; and S4, carrying out cold isostatic pressing and hot pressing curing on the composite electrolyte powder to prepare the LiaMXb-based composite solid electrolyte membrane. The prepared LiaMXb-based composite solid electrolyte membrane not only has excellent air stability, flexibility and machinability, but also has a continuous three-dimensional ion conduction path, and the assembled all-solid-state lithium battery has good electrochemical performance.

The invention provides a single-glass crystalline silicon photovoltaic module recovery method, and aims to solve the problems that fluorine film residues easily exist on a packaging adhesive film and fluorine-containing waste gas is discharged during subsequent pyrolysis of the packaging adhesive film after a back plate is removed by an existing physical disassembly, pyrolysis, separation and recovery process, and in addition, most welding strip coatings on the market contain lead, so that when the adhesive film is removed by pyrolysis, the lead-containing waste gas cannot be discharged during the subsequent pyrolysis of the packaging adhesive film. The lead element diffuses to pollute the battery piece, and the subsequent recovery difficulty is increased. Before the packaging adhesive film and the battery piece are shoveled off by a heat knife, a packaging adhesive film thinning process and a welding strip removing process are added. The residual backboard and the residual fluorine film can be removed together through the adhesive film thinning process, and the problem of fluorine-containing tail gas emission is solved; in addition, the lead-containing solder strip is removed before pyrolysis, and the solder strip is not subjected to a high-temperature process, so that pollution of lead elements to a battery piece is reduced; by optimizing the disassembling process, the breakage rate of the removed back glass is reduced, and the production yield of a production line is increased. The method is not only suitable for recycling of complete single-glass assemblies, but also suitable for recycling of broken single-glass assemblies, and the process applicability is high.

To provide a perfluoropolyether compound expressing excellent surface tension reduction performance, and expressing excellent foamability and foam stability not only during diluting fresh water but also during diluting sea water, and a fluorine-based surface active agent including the compound.SOLUTION: A perfluoropolyether dicarboxylic acid compound or a salt thereof is expressed by the following formula (1). In the formula, Rf1 represents a 1-4C perfluoroalkyl group. R1 represents a substituted or unsubstituted 1-10C hydrocarbon group. R2 represents a substituted or unsubstituted 1-6C hydrocarbon group. R3 and R4 are same or different and each represent a substituted or unsubstituted 1-4C hydrocarbon group. n is an integer of 0-5.SELECTED DRAWING: None

The invention relates to the field of mortar, and discloses environment-friendly waste tire particle modified premixed mortar and a preparation method thereof. The environment-friendly waste tire particle modified premixed mortar is prepared from the following raw materials in parts by weight: 350 to 420 parts of cement, 100 to 150 parts of fly ash, 150 to 220 parts of modified waste tire particles, 10 to 25 parts of modified carbon nanotubes, 500 to 700 parts of fine aggregate, 4 to 7 parts of a water reducing agent, 15 to 20 parts of an early strength agent, 2 to 5 parts of a photoinitiator, 1 to 3 parts of a defoaming agent, 0.4 to 1 part of a thickening agent and 190 to 275 parts of deionized water. The modified waste tire particles are obtained by introducing a plurality of crosslinking sites on the surfaces of the waste tire particles by utilizing semi-closed isophorone diisocyanate; the modified carbon nanotubes are prepared by forming polydopamine through in-situ auto-polymerization of dopamine, then performing in-situ growth of nano silicon dioxide and further introducing fluorine-containing long chains and sulfydryl groups, and the mortar is endowed with excellent mechanical strength and impermeability by adding the modified waste tire particles and the modified carbon nanotubes.