8177 results about "Propene" patented technology

The invention relates to the field of electric heating materials, and provides a graphene-based heating coating and a preparation method thereof. The coating is prepared from functionalized graphene, a surface modified bismuth telluride nanobelt, polyaniline, bisphenol A epoxy acrylate, polyurethane acrylate, a dispersing agent, a flatting agent, a silane coupling agent, a defoaming agent and a propylene glycol methyl ether acetate / N-methyl pyrrolidone mixed solvent. The functionalized graphene is obtained by modifying a hyperbranched polyolefin-acryloyl-POSS copolymer, and carrying out ultrasonic stripping, centrifugal separation, gradient washing and vacuum drying; the surface-modified bismuth telluride nanobelt is modified by an amino silane coupling agent, so that the interfacial compatibility is improved. The preparation method comprises the steps of solvent premixing, nanofiller dispersion, ultrasonic homogenization, coupling agent modification, ultraviolet curing and thermocuring. The heating coating provided by the invention has high conductivity, excellent thermal stability and adhesive force, and can be widely applied to heating electric appliances and intelligent temperature control equipment.

The invention discloses an OCA optical adhesive and a preparation method thereof, and relates to the technical field of adhesives, and the OCA optical adhesive is prepared from the following raw materials in parts by weight: 35-45 parts of acrylate-terminated hyperbranched organosilicon modified polyurethane, 2-4 parts of allyl succinimido carbonate, 1-3 parts of hexafluorobisphenol A diacrylate, 1-3 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 3-pentanediol The invention relates to a photocurable adhesive, which is prepared from the following components in parts by weight: 20 to 30 parts of a diluent, 0.6 to 1.2 parts of a photoinitiator, 0.5 to 1 part of an antioxidant and 0.5 to 1 part of a de-foaming agent. The photocurable adhesive is prepared from the following components in parts by weight: 1 to 5 parts of 1, 3-bis (oxiranyl methyl)-5-(2-propenyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 3 to 5 parts of 2, 2 '-bis (trifluoromethyl) diaminodiphenyl, 6 to 8 parts of other polymerizable monomers, 20 to 30 parts of the diluent, 0.6 to 1.2 parts of the photoinitiator, 0.5 to 1 part of the antioxidant and 0.5 to 1 part of the de-foaming agent. The OCA optical adhesive is good in bonding performance, sufficient in weather resistance and environmental protection performance and good in oil resistance.

The invention relates to a flame-retardant inorganic quick-setting material and a preparation method thereof, and the flame-retardant inorganic quick-setting material is prepared from the following raw materials: sulphoaluminate cement, aluminum-magnesium hydrotalcite, phosphorus slag powder, waste PBO fiber, an accelerator, a water reducer, a functional auxiliary agent, and 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The functional auxiliary agent comprises structural units introduced by the following monomers: 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, diphenyl (4-vinyl phenyl) phosphine oxide, 1, 3-bis (oxirane methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 10-(4-vinyl phenyl)-10H-phenoxazine and itaconic acid. The material is high in strength, remarkable in rapid hardening and flame-retardant effect, and safe and environment-friendly to use.

The invention discloses a nano blocking agent for drilling fluid and a preparation method thereof, and belongs to the technical field of blocking agents, the nano blocking agent for drilling fluid is prepared by reaction of a core layer blocking agent and a shell layer blocking agent, the core layer blocking agent is prepared by reacting nano silicon dioxide, gamma-methacryloxypropyltrimethoxysilane and a first part of vinylphosphonic acid, and has secondary blocking capability; and the shell blocking agent is prepared by reacting a second part of vinyl phosphonic acid, styrene and 2-dodecene-1-yl succinic anhydride, and has the characteristic of flexibility. The nano plugging agent has rigid supporting and flexible deformation capabilities, and the high-temperature stability and compressive strength of a plugging layer are remarkably improved. The chemical binding force of the plugging agent and the rock is enhanced; the hydrolysable methoxyl reserved in the core layer provides a secondary plugging function, and the plugging validity period is prolonged. The invention relates to a preparation method of a nano blocking agent for drilling fluid, which is used for preparing the nano blocking agent for drilling fluid.

The invention provides a salt-responsive temperature-resistant salt-resistant water-based drilling fluid tackifying filtrate reducer as well as a preparation method and application thereof, and belongs to the technical field of drilling. The tackifying filtrate reducer is prepared from the following raw materials in parts by mass: 30 to 50 parts of 1-(2-carboxyethyl)-2-vinylpyridine, 20 to 40 parts of (3-(methacrylamido) propyl) dimethyl (3-thiopropyl) ammonium hydroxide inner salt, 35 to 55 parts of N, N-dimethylacrylamide, 10 to 25 parts of 4-vinylpyridine, 300 to 500 parts of water and 1 to 5 parts of an initiator. According to the filtrate reducer, cations and anions are concentrated on one monomer molecule, so that the synthesized product contains the cations and the anions with the same charge number, has good adsorption capacity and salt response characteristics, is compatible with salt essentially, can effectively resist high temperature and high salt, and can be recycled. And the viscosity-increasing and filtrate-reducing agent has good viscosity-increasing and filtrate-reducing effects on the drilling fluid.

The invention relates to an antibacterial and anti-fouling ceramic product glaze and a preparation method, and belongs to the technical field of ceramic product glaze preparation, the ceramic product glaze comprises the following raw materials: a component A: a base material, a water glass solution, a sodium bicarbonate solution, a gadolinium nitrate solution, a europium nitrate solution, a silver nitrate solution and sodium cocoate; and the component B comprises the following components: dimethoxy methyl (3, 3, 3-trifluoropropyl) silicon, polysiloxane, dodecenyl succinic anhydride, gamma-methacryloxy propyl trimethoxy silane and white gasoline. Silver nitrate serves as a main material, europium nitrate serves as an auxiliary material, gadolinium nitrate excites the activity of silver and europium ions, and the silver nitrate, the europium nitrate and the gadolinium nitrate cooperate, so that the prepared ceramic product glaze has excellent antibacterial performance; sodium cocoate is added to form a steric hindrance effect, so that agglomeration among system particles is inhibited, and the antibacterial property of the glaze is enhanced; according to the anti-fouling glaze disclosed by the invention, the dimethoxymethyl (3, 3, 3-trifluoropropyl) silicon and the polysiloxane are added, so that the prepared glaze has a lasting anti-fouling effect.

The invention relates to the technical field of batteries, in particular to a battery. Comprising a positive plate and electrolyte, the positive plate comprises a positive current collector and a coating positioned on the surface edge of at least one side of the positive current collector along the length direction; the coating comprises filling particles, and the filling particles comprise at least one of inorganic particles and nitrogen-containing particles; the electrolyte comprises non-fluorinated cyclic carbonate and fluorinated ethyl acetate; the non-fluorinated cyclic carbonate comprises propylene carbonate and optional ethylene carbonate; on the basis of the total mass of the electrolyte, the content ratio C1 of the non-fluorinated cyclic carbonate is smaller than or equal to 25%, the content ratio C11 of the propylene carbonate is 3.1%-24.9%, the content ratio C12 of the ethylene carbonate is 0%-5%, and the content ratio C2 of the fluorinated ethyl acetate is 20.2%-70%. The battery provided by the invention can improve the problem of lithium precipitation under low-temperature discharge, and has relatively good short-circuit safety performance and relatively low high-temperature gas production rate.

The invention relates to an adjustable multi-stage heat exchange injection type mixed working medium high-temperature heat pump system, and belongs to the technical field of high-temperature heat pump systems. The mixed working medium high-temperature heat pump system comprises a mixed working medium heat pump circulation loop and a gas-liquid jet type water supply loop. The mixed working medium heat pump circulation loop comprises a low-pressure compressor, a high-pressure compressor, working medium sides of four condensers, working medium sides of three evaporators and two two-phase ejectors, the working medium sides of the four condensers, the working medium sides of the three evaporators and the two two-phase ejectors are connected in series through two gas-liquid separators, and a working medium is a mixed working medium composed of cis-1, 3, 3, 3-tetrafluoropropene and isopentane. And the gas-liquid injection type water supply loop comprises a gas-liquid injector, a water pump and water sides of the three condensers. And the mixed working medium heat pump circulation loop and the gas-liquid jet type water supply loop are mutually coupled. The two gas-liquid separators are adopted to form four-stage condensation heat exchange, so that the energy utilization efficiency can be effectively improved, and the irreversible loss in the condensation process is reduced by at least 5%; evaporator evaporation of three different pressure levels is formed through boosting of the two two-phase ejectors, and irreversible loss in the evaporation process is reduced by at least 55%.

The invention belongs to the technical field of oil and gas development, and particularly relates to an oil and gas well blocking remover and a preparation method thereof. The blocking remover comprises the following components: 5-8% of low-carbon composite organic acid, 5-7% of fluoboric acid, 6-9% of ammonium bifluoride, 4-6% of an anti-acid sludge mutual solvent, 2-4% of a corrosion inhibitor, 2-4% of polyoxypropylene polyoxyethylene propylene glycol ether, 8-12% of a permeation dispersion surfactant, 2-5% of a sulfur dissolving agent, 2-5% of a stable chlorine dioxide solution and the balance of water. The preparation method comprises the following steps: adding the low-carbon composite organic acid, the fluoboric acid and the ammonium bifluoride into water and stirring; adding an acid sludge resisting mutual solvent and a sulfur dissolving agent, and stirring; adding the corrosion inhibitor, the polyoxypropylene polyoxyethylene propylene glycol ether and the permeation dispersion surfactant, and stirring; and finally, reducing the stirring speed, adding the stable chlorine dioxide solution, and stirring to uniformly mix. The blocking remover provided by the invention is comprehensive in blocking removal function, very good in dissolving and dispersing performance on complex blocking substances, very small in corrosion damage to a shaft pipe wall and wide in applicability.

The invention discloses water-based formaldehyde-free woodworking glue and a preparation method thereof, and relates to the technical field of woodworking glue. When the water-based formaldehyde-free woodworking glue is prepared, firstly, n-butyllithium is used as an initiator to initiate cyclosiloxane and an acrylate monomer to be polymerized, then dimethyl chlorosilane is used for blocking to obtain pre-modified polyacrylate, and the pre-modified polyacrylate is used for preparing the water-based formaldehyde-free woodworking glue. Reacting the pre-modified polyacrylate with vinyl diphenylphosphine, and then reacting with 3-(4-bromophenyl)-1-propylene to obtain modified polyacrylate; secondly, reacting the 4-(trimethoxysilyl) butyraldehyde modified silicon dioxide with chitosan, and then reacting with mercaptoacetic acid to obtain modified silicon dioxide; finally, mixing the modified polyacrylate, the modified silicon dioxide, an emulsifier, a defoaming agent, pure water and a photoinitiator to obtain the water-based formaldehyde-free woodworking glue. The water-based formaldehyde-free woodworking glue prepared by the invention has flame retardance and antibacterial property.

An ammoxidation catalyst includes a metal oxide represented by Chemical Formula 1, wherein a first peak having intensity of A appears in the 2θ range of 26.3=0.5°, and a second peak having intensity of B appears in the 2θ range of 28.3±0.5° in X ray diffraction analysis by CuKα, and an intensity ratio (A / B) of the first peak to the second peak is 1.5 or more:MoxBiaFebAcBdCeDfOy  Chemical Formula 1wherein in Chemical Formula 1,A and B are different from each other, and each independently, are one or more elements of Ni, Mn, Co, Zn, Mg, Ca, and Ba,C is one or more elements of Li, Na, K, Rb, and Cs,D is one or more elements of Cr, W, B, Al, Ca, and V,a to f, x, and y are respectively mole fractions of each atom or atomic group,a is 0.1 to 7, b is 0.1 to 7, provided that the sum of a and b is 0.1 to 7,c is 0.1 to 10, d is 0.01 to 5, e is 0.1 to 10, f is 0 to 10,x is 11 to 14, y is a value determined by each oxidation number of Mo, Bi, Fe, A, B, C, and D.

The invention discloses an antibacterial packaging material and a preparation method thereof, and relates to the field of high polymer materials. When the antibacterial packaging material is prepared, polyethylene sequentially reacts with 3-bromo-1-propylene and amino trimethylene phosphonic acid, and modified polyethylene is prepared; the preparation method comprises the following steps: etching a halloysite nanotube with a hydrochloric acid solution, loading tea polyphenol into the halloysite nanotube, reacting 4-(3-thienyl) benzaldehyde and pyrrole on the surface of the halloysite nanotube, and finally polymerizing with 3-aminothiophene and thiophene to prepare the functionalized halloysite nanotube. And mixing the functionalized halloysite nanotube and the modified polyethylene, heating, and preparing a film, thereby obtaining the antibacterial packaging material. The antibacterial packaging material prepared by the invention has the capabilities of flame retardance, static electricity resistance, degradability and oxidation resistance.

The invention discloses a temperature / CO2 dual-response zwitterionic hydrogel profile control agent, which is prepared by taking a monomer A, a monomer B and a monomer C as raw materials, adding a cross-linking agent and an initiator, and carrying out polymerization reaction in a water medium. The monomer A is selected from any one of acrylamide, acrylic acid and 1-vinyl-2-pyrrolidone; the monomer B is selected from any one of [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, 2-methacryloyloxyethyl phosphorylcholine and 3-((2-(methacryloyloxy) ethyl) dimethylamino) propionic acid inner salt; and the monomer C is selected from any one of 2-(dimethylamino) ethyl methacrylate, dimethylamino propyl methacrylamide and polyethyleneimine. The profile control agent has double swelling mechanisms, has outstanding temperature and salt resistance, resists 220000 mg / L of mineralization water, is suitable for high-salt reservoirs, and is good in long-term aging property.

The invention discloses high-performance unsaturated polyester resin, and relates to the field of polyester resin. When the high-performance unsaturated polyester resin is prepared, diatomite and a silver nitrate solution are uniformly mixed to obtain silver-loaded diatomite; then, the silver-loaded diatomite is subjected to a reaction with 3-aminopropyltrimethoxysilane and 3-allyl salicylaldehyde in sequence, and modified diatomite is obtained; the preparation method comprises the following steps: reacting tris (dimethylaminopropyl) amine with 3-chloropropene to obtain a cross-linking monomer; 2-formyl pyridine and 3-aminopropane phosphoric acid are subjected to a reaction, and a flame-retardant monomer is obtained; reacting terephthalic acid, fumaric acid, 1, 3-propylene glycol and a flame-retardant monomer to obtain modified unsaturated polyester resin; and uniformly mixing the modified unsaturated polyester resin, the modified diatomite and a crosslinking monomer to obtain the high-performance unsaturated polyester resin. The prepared high-performance unsaturated polyester resin has excellent flame retardance, antibacterial property, antistatic property, anti-aging property and self-repairing property.

The invention discloses a catalytic synthesis method of 1, 1, 3, 3, 3-pentafluoropropylene, which comprises the following steps: (1) introducing a raw material 1, 1, 1, 3, 3, 3-hexafluoropropane into a reactor, and reacting under the action of a catalyst to obtain crude 1, 1, 3, 3, 3-pentafluoropropylene, the catalyst containing Cr2O3 and one of metal oxides of Al, Bi and Co; (2) carrying out water washing, alkali washing and drying on the crude 1, 1, 3, 3, 3-pentafluoropropene, and then introducing the crude 1, 1, 3, 3, 3-pentafluoropropene into a first rectifying tower for separation to obtain a mixture containing 1, 1, 1, 3, 3-pentafluoropropene and a small amount of by-products; and (3) introducing the mixture containing 1, 1, 1, 3, 3-pentafluoropropylene and a small amount of by-products into a second rectifying tower, and separating to obtain a 1, 1, 1, 3, 3-pentafluoropropylene product. The method has the advantages of simple process, high catalyst activity, low cost and environmental protection.

The invention provides a secondary battery and electronic equipment, the secondary battery comprises a negative electrode plate and an electrolyte, the negative electrode plate comprises a negative electrode active material layer, the negative electrode active material layer comprises graphite and a silicon carbon material, and the average sphericity of the silicon carbon material is 0.81-0.95; the electrolyte comprises ethylene carbonate, propylene carbonate, ethyl propionate and propyl propionate, based on the mass of the electrolyte, the mass percentage content of ethylene carbonate is a%, the mass percentage content of propylene carbonate is b%, the mass percentage content of ethyl propionate is c%, the mass percentage content of propyl propionate is d%, and the range of (a + b) / (c + d) is 0.23-1.51. According to the invention, the discharge performance and the safety performance of the secondary battery at low temperature can be improved.

In some embodiments, a cable can include an electrically conductive inner core. A first insulation layer can be disposed about the inner core. An electrically conductive layer can be disposed about the first insulation layer. A second insulation layer can be disposed about the electrically conductive layer. A first polymer jacket can be disposed about the second insulation layer. The first polymer jacket can include a first layer of armor strength members disposed therein. A second polymer jacket can be disposed about the first polymer jacket. The second polymer jacket can include a second layer of armor strength members disposed therein. An outer polymer jacket can be disposed about the second polymer jacket. At least one of the first polymer jacket, the second polymer jacket, and the outer polymer jacket can be formed from an aliphatic polyketone polymer, an ethylene-propylene copolymer, a polyolefin elastomer, a polypropylene, or a cross-linkable polyethylene.

The invention relates to the technical field of drilling compositions, in particular to a self-suspending proppant for low-water fracturing. The invention provides a self-suspending proppant for less-water fracturing. The self-suspending proppant comprises a modified proppant and a quadripolymer adsorbed on the surface of the modified proppant, the modified proppant is obtained by carrying out surface modification on a proppant through a modifier, and the modifier is a silane coupling agent and / or a nonionic surfactant; comonomers of the quadripolymer are acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, 2-methacryloyloxyethyl trimethyl ammonium chloride and acrylic acid respectively. The four comonomers are adopted to form a quadripolymer, so that the salt resistance of the self-suspending proppant can be greatly improved, and the self-suspending proppant can still keep better suspending performance in a solution with higher mineralization degree and has better low-temperature gel breaking performance.

The invention discloses a continuous synthesis and purification method of hexafluoropropylene oxide, which comprises the following steps: introducing hexafluoropropylene, oxygen and a fluorine-containing solvent into a supergravity reactor to carry out oxidation reaction at the reaction temperature of 100-200 DEG C under the reaction pressure of 1.0-2.5 Mpa for 10-120 seconds, and after the reaction is finished, overflowing and leading out reaction liquid to obtain the hexafluoropropylene oxide. And purifying to obtain the hexafluoropropylene oxide. According to the method, the problems of mass transfer and heat transfer can be effectively solved by using the supergravity reactor, the reaction selectivity is remarkably improved, meanwhile, the productivity is effectively improved, and the supergravity reactor is combined with extractive distillation treatment, so that the conversion rate of the hexafluoropropylene reaches 79% or above, the selectivity of the hexafluoropropylene oxide is 85% or above, and the purity of the hexafluoropropylene oxide after extractive distillation reaches 99%. The invention further discloses a device used in the continuous synthesis and purification method, and cyclic utilization of hexafluoropropylene and the fluorine-containing solvent can be achieved.

The invention belongs to the technical field of refrigerants, and provides a mixed refrigerant for replacing R290 and a preparation method and application thereof, the mixed refrigerant comprises a first component, a second component and a third component; the first component is trans-1, 2-difluoroethylene, the second component is 2, 3, 3, 3-tetrafluoropropene, and the third component is trifluoromethyl methyl ether; compared with R290 refrigerants in the prior art, the mixed refrigerant has the advantages that flammable and explosive components do not exist, and high-risk combustible gas clusters cannot be formed due to density layering after leakage, so that the mixed refrigerant has high safety performance, and the safety level can be not lower than A2L; the mixed refrigerant has the environment-friendly characteristic of low GWP, the GWP is smaller than or equal to 150, and the environment-friendly requirement is met; the thermophysical property and the refrigeration and / or heating cycle performance of the mixed refrigerant are similar to or better than those of R290; the mixed refrigerant can be used for directly replacing an R290 refrigerant.

The invention discloses an antibacterial moisture-absorption softening agent and a preparation method thereof. The preparation method comprises the following preparation steps: 1, preparing a softener; the preparation method comprises the following steps: S1, reacting toluene diisocynate with polyethylene glycol in a solvent to generate an intermediate I; s2, reacting the intermediate I with tetramethyldipropylenetriamine in an inert gas atmosphere to generate an intermediate II; s3, carrying out reaction on the hydrogen-containing silicone oil, allyl polyoxyethylene ether and allyl epoxy terminated polyoxyethylene ether in a solvent and a catalyst to generate modified silicone oil; and S4, carrying out a reaction on the modified silicone oil and a norfloxacin aqueous solution in a solvent, then adding the intermediate II into a reactant, carrying out a reaction for a period of time, and removing impurities to obtain the antibacterial moisture-absorption softening agent.

Disclosed in the present invention is a method for co-producing 3,3,3-trifluoropropene and 2,3,3,3-tetrafluoropropene. The method comprises: introducing 1,1,1,3-tetrachloropropane, 1,1,1,2,3-pentachloropropane, and hydrogen fluoride into a first reactor, and reacting under the action of a first catalyst to obtain a first reactor reaction product; performing rectification on the first reactor reaction product to obtain a 3,3,3-trifluoropropene product and a tower kettle product, mixing the tower kettle product with hydrogen fluoride, and then introducing the mixture into a second reactor, and reacting under the action of a second catalyst to obtain a second reactor reaction product; and separating the second reactor reaction product from hydrogen chloride, water washing, alkaline washing, and drying to obtain a 2,3,3,3-tetrafluoropropene product. The present invention has the advantages of simple process, high efficiency, flexible operation, low investment, and low energy consumption.

The invention discloses a boiler water energy-saving and emission-reducing agent, and relates to the technical field of boiler energy conservation, and the boiler water energy-saving and emission-reducing agent is prepared from the following components: 1, 3-bis ((trihydroxymethyl) methylamino) propane, sodium lignin sulfonate, caffeine, (3, 6-diamino-9-acridinyl) boric acid, a functional copolymer, sodium glycyrrhizinate, hydroxypropyl beta-cyclodextrin and deionized water. The functional copolymer comprises a structural unit introduced by the following monomers: N-acryloyl morpholine, 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, N-trihydroxymethyl methacrylamide, and 2-[3-(2H-benzotriazole-2-yl)-4-hydroxyphenyl] ethyl 2-methacrylate. The agent has remarkable scale and corrosion inhibition effects, is safe and environment-friendly to use, and has good energy-saving and emission-reducing effects.

The invention relates to the technical field of electric wire materials, in particular to a preparation process of a high-strength halogen-free flame-retardant electric wire. According to the preparation method, the polyolefin flame-retardant microspheres are obtained by adding propenylated cyclotriphosphazene, propenylated phosphaphenanthrene, methyl methacrylate, lauroyl peroxide, polyvinyl alcohol and deionized water. The flame-retardant modified boron nitride nanosheet is prepared by the following steps: firstly, preparing a flame-retardant modified boron nitride nanosheet, and then adding hydroxylated boron nitride, gamma-glycidyl ether oxypropyl trimethoxy silane and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, so as to obtain the flame-retardant modified boron nitride nanosheet. An ethylene-vinyl acetate copolymer, polyolefin flame-retardant microspheres, flame-retardant modified boron nitride nanosheets, an antioxidant and a lubricant are mixed and react, and the high-strength halogen-free flame-retardant protective sleeve is obtained. And wrapping the periphery of the copper core wire with the high-strength halogen-free flame-retardant protective sleeve to obtain a finished product. The finished product prepared by the invention has excellent flame retardant property and high strength, thereby having a wide application prospect in the technical field of electric wire materials.

The invention belongs to the technical field of organic compounds, and particularly relates to a multifunctional organic silicon glycosyl amide cationic surfactant as well as a preparation method and application thereof. The preparation method of the surfactant comprises the following steps: carrying out amine ester reaction on glucolactone and N, N-dimethyl dipropylene triamine to obtain a precursor; carrying out substitution reaction on the precursor and bromododecane to obtain an intermediate; the intermediate and 3-chloropropyl methyl dimethoxy silane or 3-chloropropyl methyl trimethoxy silane are subjected to a quaternization reaction, and the surfactant is obtained. The surfactant has good environmental protection property and biocompatibility, is non-toxic and non-irritant, can sterilize and improve the rewettability of the material surface, and has wide application prospects in the aspects of pesticide, textile, daily chemical industry and material transportation and storage.

The invention relates to a process for recycling and regenerating a waste lithium iron phosphate positive electrode material by using a specific chelating agent. The method comprises the following steps: carrying out heat treatment on a waste lithium iron phosphate positive electrode material, putting separated waste lithium iron phosphate powder into a ball milling tank, adding organic acid and a chelating agent, and carrying out ball milling; after the ball milling is finished, adding hydrogen peroxide, uniformly stirring and mixing, adjusting the pH value to 2-3 by using nitric acid, and filtering to obtain a filter cake which is iron phosphate; adding saturated sodium carbonate into the filtrate, precipitating, and recovering lithium carbonate; putting the iron phosphate, the lithium carbonate, the iron source, the lithium source and the phosphorus source in the step S3 into a ball mill for ball milling, and performing high-temperature solid-phase sintering after ball milling to obtain a regenerated lithium iron phosphate material; the chelating agent disclosed by the invention is prepared from (9ci)-2-(2-propenyl)-1-cyclopentene-1-carboxylic acid, 2-mercaptobenzimidazole carboxylic acid, an ethylene boric anhydride pyridine complex and potassium persulfate. The regenerated lithium iron phosphate material prepared by the method has excellent electrochemical performance.

There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.4 to 10.1% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 0.8 to 1.78 by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 4.5 to 8.5 g / 10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.

The invention discloses photocuring conductive hydrogel as well as a preparation method and application thereof. According to the invention, methacryloylethyl sulfobetaine (SBMA), acrylic acid (AA) and hydroxyethyl methylacrylate (HEMA) are used as comonomers, deionized water is used as a solvent, N, N '-methylenebisacrylamide (MBAA) is used as a cross-linking agent, ammonium persulfate (APS) is used as an initiator, tetramethylethylenediamine (TEMED) is used as an accelerator, and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methyl propiophenone (Irgacure2959) is used as a photoinitiator; the conductivity is improved by adding an ionic compound potassium chloride (KCl), and the photocuring conductive hydrogel is prepared in a free radical polymerization manner by adopting an LED-UV curing box. The conductive hydrogel disclosed by the invention has the characteristics of good adhesion property, conductivity, mechanical property and the like, and has wide application in the fields of wearable strain sensors and other flexible electronics.

The invention relates to the technical field of building materials, and discloses seawater-corrosion-resistant aluminoferrite cement concrete and a preparation method thereof.The seawater-corrosion-resistant aluminoferrite cement concrete is prepared through the steps that bis [3-(trimethoxysilyl) propyl] amine, perfluorohexyl ethylene and 3-bromopropylene serve as raw materials, addition and quaternization reactions are conducted, the raw materials are polymerized with acrylic acid monomers, and the seawater-corrosion-resistant aluminoferrite cement concrete is obtained. And then compounding with aluminoferrite cement, composite steel slag micro powder, modified basalt fiber and the like to obtain the concrete. The surface of siloxane of the fluorine-containing quaternary ammonium salt siloxane modifier is rich in silicon-oxygen bond functional groups, and the siloxane can be subjected to condensation reaction with silicon hydroxyl on the surface of a concrete base material after being hydrolyzed, so that pores and cracks in a concrete material are effectively filled; the composite steel slag micro-powder admixture is fine in particle, so that the system structure can be filled more tightly, and the capability of hindering permeation and diffusion of Cl <-> ions is improved; the modified basalt fiber improves the dispersion stability in a matrix, and the seawater corrosion resistance of the concrete is further improved.