2837 results about "Long chain" patented technology

The present invention is directed to a storage-stable formulation of long-chain RNA. In particular, the invention concerns a dry powder composition comprising a long-chain RNA molecule. The present invention is furthermore directed to methods for preparing a dry powder composition comprising a long-chain RNA molecule by spray-freeze drying. The invention further concerns the use of such a dry powder composition comprising a long-chain RNA molecule in the preparation of pharmaceutical compositions and vaccines, to a method of treating or preventing a disorder or a disease, to first and second medical uses of such a dry 10 powder composition comprising a long-chain RNA molecule and to kits, particularly to kits of parts, comprising such a dry powder composition comprising a long-chain RNA molecule.

The present invention is directed to a storage-stable formulation of long-chain RNA. In particular, the invention concerns a dry powder composition comprising a long-chain RNA molecule. The present invention is furthermore directed to methods for preparing a dry powder composition comprising a long-chain RNA molecule by spray-drying. The invention further concerns the use of such a dry powder composition comprising a long-chain RNA molecule in the preparation of pharmaceutical compositions and vaccines, to a method of treating or preventing a disorder or a disease, to first and second medical uses of such a dry powder composition comprising a long-chain RNA molecule and to kits, particularly to kits of parts, comprising such a dry powder composition comprising a long-chain RNA molecule.

The invention discloses long-chain alkyl polyarylamine as well as a preparation method and application thereof. The structural formula of the long-chain alkyl polyarylamine is as shown in a formula (I): # imgabs0 # formula (I), wherein R is an alkyl group with the carbon atom number of 5-12, the weight-average molecular weight of the R is 5000-136000 g / mol, and the PDI of the R is 1.41-2.24; the long-chain alkyl polyarylamine provided by the invention has relatively high fluorescence intensity, can stably emit fluorescence at high temperature and under long-term illumination, and has relatively long fluorescence lifetime.

The invention belongs to the technical field of fiber materials, and particularly relates to a modified aramid nanofiber as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing an aramid nanofiber dispersion liquid; (2) modifying the aramid nanofiber by using POSS; and (3) carrying out in-situ polymerization on polypyrrole on the surface of the aramid nanofiber. POSS (polyhedral oligomeric silsesquioxane) has a relatively large volume exclusion effect, the template effect of long-chain alkyl quaternary ammonium salt can be influenced by scattered adhesion of POSS on the surface of aramid nanofiber, uneven polymerization of pyrrole monomers is caused, and formation of a rough structure on the surface of the fiber is facilitated. According to the invention, the polypyrrole-coated aramid nanofiber with a coarse structure is used as a polyolefin modified material, so that the problem of low interfacial force existing in a common filler is solved, and the polyolefin resin composite material with high strength and antistatic property is obtained and can be widely applied to the fields of pipes, plates, grouting equipment parts, grouting bags and the like.

The invention discloses a toughened epoxy resin and a curing method thereof, and relates to the technical field of epoxy resins, the toughened epoxy resin comprises the following components: 100 parts of an epoxy resin matrix, specifically a mixture of bisphenol A epoxy resin and alicyclic epoxy resin, 5-35 parts of a composite amine curing agent, and 5-20 parts of a nano toughening agent, in particular to core-shell rubber particles grafted with epoxy groups on the surfaces, the core layer of each core-shell rubber particle is cross-linked polybutadiene, the shell layer of each core-shell rubber particle is polymethyl methacrylate, 0.5-3 parts of an accelerant comprising a bi-component synergistic accelerant, 1-5 parts of an interface enhancer, and a mixture of gamma-glycidyl ether oxypropyl trimethoxy silane and a titanate coupling agent, a bisphenol A type epoxy resin and a specific proportion of alicyclic epoxy resin are combined to construct an epoxy resin matrix according to a mass ratio of 2: 1, the epoxy resin matrix is matched with a composite amine curing agent prepared by carrying out a special three-step reaction on long-chain polyether diamine, aromatic diamine and anhydride, and key parameters such as molecular weight, functionality and molar ratio of the components are accurately regulated and controlled.

The invention belongs to the technical field of flame retardants, and particularly relates to a high-thermal-stability polyphosphate flame retardant and a preparation method thereof. The DOPO is modified through the polyethylene glycol acrylate, methyl methacrylate and dicumyl peroxide composite solution, double bonds of the polyethylene glycol acrylate and P-H bonds of the DOPO can be subjected to nucleophilic addition to form stable C-P bonds, and thermal migration of the DOPO is hindered; dOPO has polymerization double bonds of methyl methacrylate and long carbon chains of polyethylene glycol acrylate, so that the compatibility of the polyphosphate flame retardant and a polymer substrate is improved, and phase separation is avoided; maleic anhydride grafted silicone oil is connected to the surface of an amino modified gamma-cyclodextrin-modified DOPO inclusion compound, so that the polyphosphate flame retardant has high thermal stability and high compatibility after long-chain alkyl modification; amino groups in the modified gamma-cyclodextrin react with maleic anhydride grafted silicone oil to generate an amido bond cross-linked network, so that the thermal migration of DOPO is reduced together, and the high thermal stability of the polyphosphate flame retardant is improved.

The invention relates to the technical field of fracturing fluids, and discloses a preparation method of a temperature-resistant and salt-resistant fracturing fluid, which comprises the following steps: carrying out polymerization reaction on acrylamide, acrylic acid and an acrylamide sulfonic acid monomer to obtain a polymer thickening agent, and compounding the polymer thickening agent with a cross-linking agent, a clay stabilizer and the like to obtain the temperature-resistant and salt-resistant fracturing fluid. The polymer thickening agent contains long-chain alkyl, a physical cross-linked spatial network structure can be formed through a hydrophobic association effect, the hydrodynamic volume is increased, a good tackifying effect is achieved, and after high-speed shearing, the long-chain alkyl can be cross-linked again to form a spatial network structure, so that a solution still keeps very high apparent viscosity, and the viscosity of the solution is improved. Good anti-shearing performance is realized. The acrylamide sulfonic acid monomer contains a sulfonate group and is used as a temperature-resistant and salt-resistant monomer, so that the polymer thickening agent has good temperature resistance and salt resistance, and the fracturing fluid still keeps relatively high apparent viscosity after being subjected to high-temperature heat treatment and in formation water with high salinity.

The invention relates to the technical field of scintillator materials and X-ray detection, in particular to a rare earth organic-inorganic hybrid complex scintillator and a preparation method and application thereof. The general formula of the rare earth organic-inorganic hybrid complex scintillator is [RE (L) 4] <->. [A] < + >, wherein RE is selected from Eu, Tb, Sm or Dy; l is a beta-diketone ligand; [A] < + > is selected from long-chain hydrophobic quaternary ammonium salt cations or heterocyclic quaternary ammonium cations which have the carbon atom number of C8-C20 and do not contain active functional groups. The rare earth organic-inorganic hybrid complex scintillator provided by the invention has good solubility and molecular-level dispersion capability. The scintillator film based on the rare earth organic-inorganic hybrid complex prepared by using the rare earth organic-inorganic hybrid complex has the characteristic of compatibility of high scintillator load and high light transmission, overcomes the problems of low scintillator load rate, poor transparency and limited imaging resolution of the traditional scintillator film, and has excellent practical value and popularization prospect.

The invention relates to a deicing super-hydrophobic coating based on MXene, a coating, a preparation method and application of the coating. The coating comprises the following components in percentage by mass: 2%-5% of a super-hydrophobic modified MXene photo-thermal material, 2%-5% of epoxy resin, 0.5%-1.5% of an epoxy resin curing agent, 0.5%-1.5% of PDMS, 0.05%-0.15% of a PDMS curing agent and 80%-90% of a diluent. Wherein the super-hydrophobic modified MXene photo-thermal material is MXene powder treated by fluorine-free long-chain silane, and the super-hydrophobic modified MXene photo-thermal material is a super-hydrophobic modified MXene photo-thermal material. MXene with excellent photo-thermal conversion performance is used as a photo-thermal material, fluorine-free long-chain silane is used for performing low-surface-energy hydrophobic modification on the MXene material, environmental pollution caused by perfluorinated or polyfluorinated organic compounds is avoided, photo-thermal performance and super-hydrophobic performance are integrated, the advantages of a super-hydrophobic coating and a photo-thermal coating are integrated, and the application prospect is wide. The deicing super-hydrophobic coating based on MXene can be used for passive ice prevention and active photo-thermal deicing.

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

The invention relates to the technical field of preparation of epoxy insulating materials, in particular to an epoxy resin material constructed by a multistage molecular chain cross-linked network and a preparation method, and the epoxy resin material realizes synergistic improvement of insulation and mechanical properties. Epoxy resin monomers with different rigid and flexible group contents and different chain lengths under the same chain structure are combined according to a certain proportion and are mixed into a homogeneous-phase resin matrix at a high temperature, and then the homogeneous-phase resin matrix and an anhydride curing agent are subjected to cross-linking curing at the high temperature to prepare the epoxy insulating material. The rigidity and flexibility of an epoxy cross-linked network are regulated and controlled by utilizing the multi-rigid group and multi-epoxy group of a short-chain resin monomer in a resin matrix and the multi-active hydroxyl and high-flexibility ether bond content of a long-chain resin monomer, and a charge barrier is constructed. Finally, the epoxy resin material with high mechanical property and high electrical insulation property is prepared, and the insulation property and the mechanical property are synergistically improved.

The invention discloses a flexible PI heat-conducting insulating film pad and a preparation method thereof, and relates to the field of film pads. The preparation method comprises the following steps: preparing Fe3O4 magnetic heat-conducting core and SiO2 insulating shell composite nanoparticles by a sol-gel method, treating and grafting epoxy groups by a silane coupling agent, performing ring-opening addition with one end amino group of amino-terminated polydimethylsiloxane, and reacting the other end amino group with polyethylene glycol diglycidyl ether, so that two flexible long chains are grafted on SiO2. Due to the modified composite nanoparticles and the flexible long-chain structure, the flexibility of the film pad is remarkably improved; thermal vibration of silicon-oxygen bonds and ether bonds promotes heat transfer, a hydrogen bond network is formed with a PI substrate to improve dispersion stability, particles are orderly arranged under the action of a high-frequency magnetic field to construct a three-dimensional heat conduction network, and heat conduction efficiency is enhanced; the SiO2 isolates the inner core from conducting and improves the insulating property of the film pad by virtue of good insulativity and no free charge in the flexible long-chain polymer. The flexible PI heat-conducting insulating film pad prepared by the invention has the effects of flexibility, heat conduction and insulation.

The invention discloses a sunlight response high-strength self-repairing polyurethane material and a preparation method thereof, and belongs to the technical field of self-repairing materials, the sunlight response high-strength self-repairing polyurethane material is obtained by coordinating polyurethane containing an azothiazole structure and metal ions according to a certain proportion, the polyurethane containing the azothiazole structure is prepared by stirring diisocyanate, diol containing the azothiazole structure, long-chain diol and aminophenylboronic acid according to a certain proportion in N, N-dimethylformamide at room temperature to react for 5 hours. According to the invention, a photoactive azothiazole structure is introduced into polyurethane, and reversible metal coordination bonds are formed by the azothiazole structure and metal ions, so that rapid sunlight response self-repairing of the polyurethane material is realized. The self-repairing efficiency of the prepared photoresponse self-repairing polyurethane material is 95.1% after the photoresponse self-repairing polyurethane material is irradiated by sunlight for 2 h, and the photoresponse self-repairing polyurethane material has rapid photoresponse self-repairing performance and has wide application prospects in the fields of self-repairing coatings, intelligent coatings and anti-corrosion coatings.

The invention discloses deep eutectic gel polymer electrolyte as well as preparation and application thereof, belongs to the technical field of battery electrolyte, solves the problems of low thermal stability, low ionic conductivity and poor mechanical property in the prior art, and comprises a bimetallic salt-eutectic solvent and a polymer chain which are dynamically crosslinked and constructed, the bimetallic salt-eutectic solvent comprises lithium ions, heterogeneous metal salt and Lewis base, and the polymer chain is formed by free radical polymerization, atom transfer radical polymerization (ATRP) or reversible addition-fragmentation chain transfer radical polymerization (RAFT). According to the invention, the deep eutectic solvent is introduced as a reaction solution, so that the organic gel monomer is subjected to photopolymerization or thermal polymerization in the solution, the elongation at break can reach more than 500%, the organic gel has excellent mechanical stretchability, a polymer network is formed by utilizing a long-chain molecular formula of a polymer chain, the deep eutectic solution is wrapped in the polymer network, and the organic gel has excellent thermal stability; and the good ionic conductivity of the electrolyte is ensured.

The invention discloses a supported nickel catalyst for preparing 1, 3-propylene glycol through hydrogenation of 3-hydroxypropionaldehyde as well as a preparation method and application of the supported nickel catalyst, and relates to the technical field of catalysts. The modified long-chain multi-carbon inducer is used, and a special long-chain molecular structure and a branched chain group of the inducer can effectively and selectively adsorb and occupy a micropore impregnation site; the preparation method has the beneficial effects that more active component nickel species are obviously promoted to be dispersed in main reaction confinement spaces such as mesopores and macropores and interact with the carrier to form effective active sites, and active component steeping liquor is inhibited from entering micropore channels due to capillary action; the active site failure caused by agglomeration of nickel species in micropores in the subsequent drying and roasting process of the catalyst precursor is avoided, the efficient and directional reaction is ensured, the generation of by-products is greatly reduced, the pressure is relieved for the subsequent product rectification separation, and the final product purity is improved. The catalyst provided by the invention can still keep an excellent catalytic effect when the air speed of a 3-hydroxypropionaldehyde solution is increased to 6.5 h <-1 >.

The invention relates to a preparation method and application of high-temperature-resistant organic modified bentonite. According to the method, three organic modifiers of long-chain quaternary ammonium salt, amide and a silane coupling agent are compounded to modify bentonite, and the problem that a single modifier is easy to decompose at high temperature is solved through the synergistic effect of physical intercalation, chemical crosslinking and interface bonding; and secondly, a three-dimensional stable structure is constructed by adding nano silicon dioxide and a composite modifier, so that the high temperature resistance and dispersion stability of the modified bentonite are further enhanced. According to the invention, the requirements of deep well and ultra-deep well drilling fluids on the temperature resistance and rheological property of the treating agent can be met, and the ultra-deep well drilling fluid which can tolerate the high temperature of 250-300 DEG C, and is low in filter loss and good in dispersion stability can be obtained.

The invention relates to the technical field of research and development of BIB liquid packaging materials, and discloses a PE-PA-based composite film, a manufacturing process and an application in BIB liquid packaging, and specifically comprises the following steps: synthesizing a PE-PA compatilizer; the preparation method comprises the following steps: carrying out ring-opening reaction on an epoxy functional group of a PE-PA compatilizer and an amino functional group or a carboxyl functional group at a PA resin molecular chain end to prepare PE-PA compatilizer grafted nylon resin, and carrying out physical anchoring action on a long-chain alkane structure on the PE-PA compatilizer grafted nylon resin and a PE resin molecular chain to prepare the PE-PA alloy master batch; low-density polyethylene resin is used as a raw material of a supporting layer, PE-PA alloy master batch is used as a raw material of a functional layer, metallocene polyethylene resin is used as a raw material of a heat sealing layer, a three-layer co-extrusion blow molding film forming technology is adopted, the PE-PA composite film is prepared, and the film product is excellent in comprehensive performance and can be used for manufacturing a BIB bag body.

The invention provides a whisker-based insulating anticorrosive coating and a preparation method thereof, and belongs to the technical field of insulating materials, the insulating anticorrosive coating comprises a component A and a component B. The component A comprises, by weight, 60-80 parts of an organosilicon modified copolymer, 0.5-2 parts of a dispersant, 0.5-5 parts of an antifoaming agent, 0.1-1.0 part of an adhesion promoter, 0.1-1.0 part of a film forming aid, 1-3 parts of a rheological aid and 20-40 parts of a filler; and the component B comprises 95-99 parts of a curing agent and 1-5 parts of a defoaming agent. According to the invention, the boron nitride whisker is subjected to hydroxylation modification and grafted into a long-chain structure of tetramethyl dihydroxy disiloxane, and then is subjected to a polymerization reaction with epoxy resin to obtain an organosilicon copolymer, so that the dispersity of boron nitride in a coating system and the flexibility of the coating system are effectively improved; the one-time film forming thickness of the insulating anticorrosive paint can reach the millimeter level by adopting a brush coating or spray coating mode, so that the requirement of high voltage resistance of the coating is met.

The invention discloses a high-reliability PbS quantum dot film, a preparation method thereof and a photoelectric device. The preparation method comprises the following steps: 1) obtaining a first quantum dot solution; 2) adding medium-chain and long-chain amine; 3) adding an anti-solvent; 4) obtaining medium-chain and long-chain amine modified PbS quantum dot solids; 5) obtaining a second quantum dot solution; (6) forming a PbS quantum dot coating; 7) forming a mercaptan solution; 8) coating the PbS quantum dot coating with a mercaptan solution; (9) annealing treatment; 10) forming a new PbS quantum dot coating, and coating the new PbS quantum dot coating with a mercaptan solution; according to the PbS quantum dot thin film and the preparation method thereof, through the induction and synergistic effect of halogen atoms, the binding capacity of halogenated mercaptan ligands and the surface of the PbS quantum dot thin film is enhanced, the surface defect state of the PbS quantum dots is effectively inhibited, and the reliability of the PbS quantum dot thin film and a photoelectric device under the conditions of high temperature, high humidity and long-time illumination is remarkably improved.

The invention discloses a long-chain alkyl polyarylamine composite material with fluorescence characteristics and application thereof, the long-chain alkyl polyarylamine composite material comprises long-chain alkyl polyarylamine and polyolefin in a mass ratio of 1: 19-1000, and the structural formula of the long-chain alkyl polyarylamine is as shown in the formula (I): # imgabs0 # formula (I); wherein R is an alkyl group with the carbon atom number of 5-12, the weight-average molecular weight of the R is 5000-136000 g / mol, and the PDI of the R is 1.41-2.24; the long-chain alkyl polyarylamine and the polyolefin are blended to prepare the composite material, the problem of poor mixing dispersity of a fluorescent substance and the polyolefin is solved, and the obtained composite material has high fluorescence intensity and can be potentially applied to the fields of display, light conversion films, fluorescence positioning and the like.

The invention discloses a method for preparing a single-benzene-ring liquid chemical through solvent-free hydrogenation degradation of polystyrene waste plastics based on a bifunctional catalyst. According to the method, Nb2O5 is taken as a carrier, 1-3wt% of noble metal ruthenium is loaded to prepare a bifunctional catalyst, and high-molecular-weight polystyrene is efficiently degraded into single-benzene-ring liquid chemicals such as benzene, methylbenzene and ethylbenzene through hydrogenation reaction under a solvent-free condition. Precious metal ruthenium hydrogenates a polystyrene long chain to generate a short-chain hydrocarbon intermediate, then a carrier # imgabs0 # acid site drives beta-cracking and hydrogen transfer reaction, and a single-benzene-ring product is directionally generated through the synergistic effect of the short-chain hydrocarbon intermediate and the carrier # imgabs0 # acid site. The method has the advantages of no solvent, reduced equipment cost, high reaction efficiency, simple reaction operation, mild reaction conditions, simple catalyst preparation process, high activity, selectivity and good stability, and is suitable for industrial production, and no other solvents preempt acidic sites. The method not only can realize cyclic utilization of resources, but also can alleviate the current environmental pollution problem.

The invention provides a polyacrylic acid inverse emulsion thickener and a preparation method thereof. The polyacrylic inverse emulsion thickener is prepared from the following components in parts by mass: 1 to 10 parts of modified attapulgite, 0.1 to 5 parts of hyperbranched acrylate, 30 to 60 parts of acrylic acid, 1 to 5 parts of a hydrophobic long-chain acrylate monomer, 5 to 20 parts of solvent oil, 0.5 to 5 parts of an emulsifier, 0.01 to 1 part of an initiator and 0.5 to 2.5 parts of a phase inversion agent. The preparation method comprises the following steps: firstly, introducing an isocyanate chain segment and a double-bond active group to the surface of acid-activated attapulgite to improve dispersity and reaction activity; then trimethylolpropane is used as a core, hyperbranched acrylate with multiple double bonds and a hyperbranched structure is constructed, and then the polyacrylic acid inverse emulsion thickener is prepared through an inverse emulsion method. Through the synergistic effect of the hyperbranched acrylate, the modified attapulgite and the hydrophobic long-chain monomer, the thickening performance, the electrolyte resistance and the long-term stability are remarkably improved.

The invention relates to an organic solid electrolyte for an in-situ curing high-voltage positive electrode, a battery and a preparation method. The organic solid electrolyte is formed by in-situ polymerization of ether monomers, ester monomers, a lithium salt and a solvent through synergistic thermal initiation of double initiators. The electrolyte disclosed by the invention has the advantages that the ester polymer monomer and the ether polymer monomer are blended, and then the two monomers are respectively polymerized in a thermal initiation manner to form mutually crossed macromolecular long chains. The strategy can improve the interface stability of the electrode and the electrolyte and reduce the interface impedance of the electrode and the electrolyte. In the formed polymer network structure, the ester chain segment enhances the mechanical strength and widens the electrochemical window; and the ether chain segment provides flexible and lithium ion transmission channels. Due to the chemical complementarity of the ester monomers and the ether monomers, the overall performance of the composite polymer electrolyte is improved.

The invention discloses a high-strength modified polyethylene composite fiber and a preparation method thereof, and belongs to the technical field of fiber materials, carboxylated mesoporous silica microspheres are used as a matrix, the surface of the matrix is coated with a graphene sheet layer, then hydroxyethyl methylacrylate is grafted, functionalized graphene / mesoporous silica microspheres are obtained, the functionalized graphene / mesoporous silica microspheres are used as a filler, and the high-strength modified polyethylene composite fiber is prepared. When the polyethylene composite fiber is applied to a ship cable, the overall weight of the ship cable can be reduced, and relative slippage can be generated between graphene lamellas and mesoporous silica microspheres, so that stress is dispersed, and the strength of the polyethylene composite fiber is improved; a hydrophobic alkane long chain is introduced through esterification of the graphene / mesoporous silica microspheres and hydroxyethyl methylacrylate and graft modification of hydroxyethyl methylacrylate, so that the hydrophobic alkane long chain has good compatibility with white oil, and the microspheres are prevented from approaching and gathering by a steric hindrance effect, so that the hydrophobic alkane long chain is more uniformly and stably dispersed in the white oil.

The invention relates to the technical field of polypropylene, and discloses a high-barrier polypropylene composite material and a preparation method thereof, the high-barrier polypropylene composite material comprises 55-80 parts by weight of polypropylene, 20-45 parts by weight of cardanol modified polystyrene, and 1.2-2 parts by weight of maleic anhydride grafted polypropylene; according to the invention, an alkyl long chain of cardanol is introduced into a side chain of polystyrene, and the alkyl long chain and polypropylene are subjected to a physical chain winding effect, so that a tight physical crosslinking is formed, the crosslinking density of a polypropylene molecular chain is improved, the water vapor permeability is reduced, and the barrier property is improved. The cardanol modified polystyrene contains hydroxyl groups and reacts with the compatilizer maleic anhydride grafted polypropylene, so that the compatibility between the polystyrene and the polypropylene is improved, the polystyrene and the polypropylene form an alloy system, higher mechanical properties are shown, and the tensile strength and the bending strength are improved.

The invention discloses an acid liquid system based on synergistic interaction of a corrosion inhibitor and an iron stabilizer and a preparation method, and relates to the technical field of oilfield chemistry, the acid liquid system comprises the following components by mass: 10%-20% of an acid liquid, 0.5%-3% of a composite corrosion inhibitor, 0.5%-2% of an iron stabilizer, 0.1%-0.5% of a discharge aiding agent, 0.2%-0.8% of an acid thickening agent, and the balance of water; the main component of the composite corrosion inhibitor in the acid liquid system is long-chain alkyl bis-imidazoline-thiadiazole amide hydroxypropyl sulfobetaine, and the composite corrosion inhibitor contains a bis-imidazoline ring and a thiadiazole amide ring, and can form more stable multi-active-site adsorption on the metal surface to form a compact and stable protective film, so that the metal surface corrosion resistance is improved, and the metal surface corrosion resistance is improved. Long carbon chains in molecules can effectively block corrosive media, N, O and S heteroatoms in the molecules are adsorbed on the iron surface through lone pair electrons to inhibit corrosion, the slow-release effect is further enhanced, and therefore the slow-release efficiency is improved by 40% or above.

The invention provides organic silicon cooling liquid and a preparation method thereof. The molecular structural formula of the organic silicon cooling liquid is shown in the specification, R1 is selected from C3-7alkane, the value of a is 0-12, and the value of b is 14-20. A phenyl group and a long-chain alkyl side chain are introduced into a silicone oil main chain through an organic synthesis means, the regularity of a polysiloxane chain is destroyed, the crystallization property of the polysiloxane chain is reduced, the performance of the organic silicon cooling liquid is changed from the molecular structure, and the organic silicon cooling liquid can still flow at a low temperature (-65 DEG C). In addition, by introducing phenyl, the flash point, irradiation resistance and other properties of the immersed cooling liquid can be remarkably improved. # imgabs0 #

The invention relates to the technical field of oilfield chemistry, in particular to an aminoethanesulfonic acid type surfactant and a preparation method and application thereof.The preparation method of the aminoethanesulfonic acid type surfactant comprises the steps that firstly, fatty amine is dissolved in a first solvent, a sodium chloroethanesulfonate aqueous solution is added, and N-long-chain alkyl-2-sodium aminoethanesulfonate is obtained through a reaction; and 2, dissolving a required amount of N-long-chain alkyl-2-sodium aminoethanesulfonate in a second solvent, adding a required amount of methyl acrylate, and reacting to obtain the aminoethanesulfonic acid type surfactant. The aminoethanesulfonic acid type surfactant disclosed by the invention contains long-chain alkyl, amino, ester groups and sulfonic acid groups, so that the aminoethanesulfonic acid type surfactant has good surface activity and can meet the development requirements of oil and gas fields. The microemulsion cleanup additive prepared from the aminoethanesulfonic acid type surfactant can effectively reduce the surface tension and the interfacial tension of an aqueous solution, and the preparation method is easy and convenient to operate, mild in condition and suitable for industrial production.

The invention relates to the technical field of lithium battery diaphragms, in particular to a lithium battery diaphragm binder resistant to heat of 150 DEG C or above and a preparation method of the lithium battery diaphragm binder. A core-shell structure design is adopted, a core layer is formed by polymerizing an acrylate monomer, glycidyl methacrylate and an emulsifier, and a shell layer contains the acrylate monomer, styrene, an acrylamide monomer and beta-carboxyethyl acrylate. A high-temperature-resistant network structure is formed through a cross-linking reaction of an epoxy group of GMA and a carboxyl group of beta-CEA, and meanwhile, the hydrophilicity is reduced by using styrene and long-chain acrylate. The problems that a traditional binder is high in high-temperature shrinkage rate, high in hydrophilicity and difficult in two-component curing are solved, and the preparation method is suitable for production of the high-safety lithium battery diaphragm.

The invention discloses a shape-selective isomerization catalyst as well as a preparation method and application thereof. The catalyst comprises a ten-membered ring aluminum phosphate molecular sieve, a noble metal active component and a metal oxide auxiliary active component. The ten-membered ring aluminum phosphate molecule is selected from at least one of SAPO-11, MeAPO-11, SAPO-41 and MeAPO-41, and the ten-membered ring aluminum phosphate molecule is selected from at least one of SAPO-11, the noble metal active component is selected from at least one of Pt and Pd; the metal oxide auxiliary agent is selected from at least one of CeO2, Nb2O5 and Ta2O5. Compared with the catalyst prepared in the prior art, the catalyst prepared by the method provided by the invention has higher activity and isomer yield in the isomerization reaction of long-chain n-alkanes.