1641 results about "Functional monomer" patented technology

The invention relates to the technical field of oil-displacing agents, and particularly discloses a targeted nano oil-displacing agent and a preparation method thereof. A preparation method of a targeted nano oil displacement agent comprises the following steps: S1, dispersing 10-30 parts by mass of silanized inorganic nanoparticles in an alcoholic solution, adding 5-12 parts by mass of a functional monomer, 8-20 parts by mass of a hydrophilic monomer and 5-15 parts by mass of a hydrophobic monomer in an inert atmosphere, uniformly mixing, heating to 75-85 DEG C, adding an initiator, carrying out a constant temperature reaction for 4-6 h, and cooling to obtain a pre-grafted nanoparticle dispersion liquid; s2, mixing the pre-grafted nanoparticle dispersion liquid with a composite surfactant, adjusting the pH value to 6.5-7.5, and mixing at 30-40 DEG C for 22-26 hours to obtain the targeted nano oil displacement agent, the targeting type nano oil displacement agent prepared by the invention can still keep excellent dispersion stability and ultralow interfacial tension under the condition of a high-salt oil reservoir, so that the oil displacement efficiency is remarkably improved.

This case relates to a self-healing optical film and its preparation method. The optical film is made by adding a nanoparticle suspension to PET masterbatch as the main material during its melt extrusion process, resulting in a cast sheet. After biaxial stretching, a self-healing coating liquid is coated online, followed by shaping and cooling. The nanoparticle suspension includes nano-titanium oxide, MAH-PET polymer, ATO nanoparticles, and titanate coupling agent. The self-healing coating liquid is produced by core-shell emulsion polymerization, forming a nano-silica hard core and an acrylate functional monomer polymer soft shell. This invention adds the nanoparticle suspension by in-situ feeding in the middle of the extruder, reducing steps, improving dispersion uniformity, and making the film surface smoother. Then, the self-healing coating liquid is applied online after longitudinal stretching and before transverse stretching, forming a film on the film surface, improving the hardness and scratch resistance of the film material, enabling rapid self-healing at room temperature, strong stability, and avoiding the occurrence of rainbow patterns.

The invention discloses an acrylic acid composite emulsion coating and a preparation method thereof, and relates to the technical field of novel coatings. The acrylic acid composite emulsion coating comprises the following components in parts by mass: 30-50 parts of an acrylate monomer mixture, 1-8 parts of a functional monomer, 0.5-3 parts of a protective colloid, 1.5-5 parts of an emulsifier, 0.2-1.5 parts of an initiator, 40-60 parts of deionized water and 1-3 parts of a weather-resistant agent. The coating adopts a water-based system and takes water as a dispersion medium, so that the use of an organic solvent is reduced, the emission of volatile organic compounds (VOC) is remarkably reduced, and the coating is more environment-friendly. By adding the weather-resistant agent with a specific structure, free radicals can be effectively captured, an oxidation chain reaction can be interrupted, and the weather resistance of the coating is improved through the synergistic effect of multiple mechanisms, so that the phenomena of pulverization, color fading, cracking and the like are unlikely to occur under the action of environmental factors such as ultraviolet rays, oxygen and water vapor.

The invention discloses a composite polyacrylamide flocculant based on a nano core-shell structure as well as a preparation method and application of the composite polyacrylamide flocculant. The composite polyacrylamide flocculant is a core-shell structure composite material which takes inorganic nanoparticles grafted with carbon-carbon double bonds on the surface as a core and takes a polyacrylamide copolymer as a shell; the polyacrylamide copolymer is prepared from the following components in parts by mass: 70 to 90 parts of acrylamide, 10 to 30 parts of functional monomer and 0.1 to 1.0 part of cross-linking agent. The basic conception of the flocculating agent provided by the invention is that the structural design of inorganic nano core-organic polymer shell is adopted, PAM molecular chains firmly grow on the surfaces of nano particles in a chemical grafting manner, high dispersion and functional synergy of nano units are realized, and the obtained product has the characteristics of high flocculation speed, dense floc, high removal efficiency and the like, and has a wide application prospect. The method is especially suitable for deep treatment of difficult-to-treat industrial wastewater such as oil-containing wastewater, dye wastewater and heavy metal wastewater.

The invention relates to a preparation method of a core-shell fluorine-free super-hydrophobic emulsion based on acrylate pressure-sensitive adhesive viscosity. According to the method, a polyacrylate pressure-sensitive adhesive is adopted, an acrylate soft monomer and a functional monomer are copolymerized on the surface layer of the polyacrylate pressure-sensitive adhesive, and a polyacrylate copolymer with pressure-sensitive adhesiveness and reaction activity is coated to obtain a pressure-sensitive adhesive'rigid core at flexible shell 'core-shell polymer microsphere emulsion with a core-shell structure; the production process is simplified (two steps are combined into one step), and chromatic aberration is eliminated; the silane coupling agent can be used for replacing a silane coupling agent, and the problem of insufficient durability is further solved. According to the invention, the simplification and batch production of the production process can be effectively realized, and meanwhile, the requirements of modern industry on economic and green production can be met.

The invention discloses an amyloid-like protein mediated base material surface controllable functional modification method, which comprises the following steps of: dip-coating or spraying an aqueous solution containing protein, a photoinitiator, an anti-fouling monomer and an adhesive monomer on the surface of a base material, and irradiating by ultraviolet rays to form a uniform anti-fouling amyloid protein nano coating on the surface of the base material. Functional monomers and amyloid protein self-assembly are combined, and the effects of adhesion and stubborn stain resistance can be achieved by simultaneously constructing a dual-adhesion unit and a functional anti-fouling unit. The protein nano coating has high optical permeability, on the premise that the original appearance of a base material is not affected, the functions of surface stubborn stain resistance, self-cleaning, stable adhesion and the like are added, stains on the surface of the coating can be washed away through simple water flow washing, and the protein nano coating has wide application prospects in daily life.

The invention provides a high-molecular adsorption material with high selectivity on platinum group metals as well as a preparation method and application of the high-molecular adsorption material, and belongs to the technical field of material science. Comprising the following steps: (1) preparing a methanol solution containing platinum group metal ions, and adding a functional monomer mixture and modified graphene oxide to form a pre-assembled compound; (2) adding a cross-linking agent and an initiator, removing oxygen, and polymerizing to obtain a polymer; and (3) grinding the polymer, eluting metal ions, washing to be neutral, and drying. The high-molecular adsorption material provided by the invention takes modified graphene oxide as a support body, template molecules and specific functional monomers (4-vinylpyridine and 2-mercaptobenzimidazole) are combined to form a pre-assembled compound, then a cross-linking agent and an initiator are added, recognition sites are fixed through cross-linking polymerization, and finally, the high-molecular adsorption material is obtained after the template molecules are eluted. The adsorbent is high in adsorption rate, capable of specifically adsorbing platinum group metal, good in stability and reproducibility and capable of being repeatedly used.

The invention discloses a dynamic borate bond-based self-healing polyacrylic acid binder and a preparation method thereof. The dynamic borate bond-based self-healing polyacrylic acid binder comprises a polymer main chain and a dynamic cross-linking agent, the dynamic cross-linking agent is a polyol compound containing at least two pairs of ortho-hydroxyl groups; the polymer main chain is formed by copolymerizing the following monomers: an acrylic structural monomer, the molar fraction of which accounts for 85-94% of the total monomer; a functional monomer containing a boric acid group, wherein the molar fraction of the functional monomer accounts for 3-8% of the total monomer; the mole fraction of the flexible monomer containing the acrylate group accounts for 3-8% of the total monomer. Various stresses generated by different negative electrode materials in circulation can be effectively adapted and buffered through a network formed by dynamic boric acid ester bonds and reversible fracture and combination of the boric acid ester bonds, so that the service life of the battery is generally prolonged, the working temperature range of the battery can be remarkably widened, the low-temperature discharge capacity can be remarkably increased, and the high-temperature cycle life can be prolonged.

The present invention relates to the field of oilfield chemical technology, and proposes a fast-soluble hydrophobic associating polymer for reinjection water for fracturing and a preparation method thereof. Hydrophobic functional monomers and non-ionic polarity regulators are prepared into polymerizable hydrophobic associating micelles, and the polymerizable hydrophobic associating micelle solution and conventional monomer aqueous solution are mixed. The molecular weight of the copolymer is regulated by a molecular weight regulator, and the fast-soluble hydrophobic associating polymer for reinjection water is obtained after reaction, granulation, drying and crushing. It comprehensively utilizes the synergistic effect of the multi-component supramolecular forces of the ternary hydrophobic functional monomers to achieve stability regulation of the associating micelles, and obtains a three-dimensional network structure of salt-resistant polymers with a dense associating network and a strong associating effect; introduces a polarity regulator containing a non-ionic hydrophilic structure, and utilizes self-assembly to form a hydration layer on the surface of the associating micelles, thereby weakening the water-phase aggregation effect and ion shielding effect of the hydrophobic structure, which is beneficial to the stretching of the molecular chain in the water phase, and obtaining the online mixing and fast-dissolving efficiency of the reinjection water, and having both high salt resistance and strong sand carrying performance.

The invention provides a fluorine-containing acrylate pressure-sensitive adhesive as well as a preparation method and application thereof, and the fluorine-containing acrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 30-70 parts of a soft monomer; 10 to 40 parts of a hard monomer; 1-40 parts of a fluorine-containing monomer; 1-10 parts of a functional monomer; 0.1 to 0.3 part of a thermal initiator; 100 to 300 parts of a solvent; the fluorine-containing monomer comprises any one or a combination of at least two of trifluoroethyl acrylate, hexafluorobutyl acrylate, hexafluorobutyl methacrylate, hexafluoroisopropyl acrylate, octafluoroamyl acrylate, dodecafluoroheptyl acrylate, dodecafluoroheptyl methacrylate and tridecafluorooctyl methacrylate. The wafer cutting adhesive tape prepared from the fluorine-containing acrylate pressure-sensitive adhesive provided by the invention has relatively good stripping performance, high temperature resistance and hydrophobicity.

The invention provides a water-resistant carbon-coated current collector as well as a preparation method and application thereof, and relates to the technical field of batteries. Specifically, the method comprises the following steps: preparing a core-shell type composite binder; the core layer is obtained by polymerizing raw materials including a first monomer, a second monomer and a cross-linking monomer, and the shell layer is obtained by polymerizing raw materials including a third monomer, a fourth monomer and a functional monomer; preparing conductive slurry containing a conductive material and a dispersing agent, fully mixing the conductive slurry with the core-shell type composite binder, and adjusting the pH value to obtain pre-coating slurry; and coating the surface of a metal foil with the carbon-coated current collector, and carrying out heat treatment to obtain the carbon-coated current collector. The binder disclosed by the invention has high water resistance, can effectively prevent a carbon-coated coating from falling off when an active coating is coated, and improves the stripping force of the active coating, meanwhile, the core-shell structure of the binder prevents the surface of a conductive agent from being excessively wrapped, and specific functional groups form strong interface bonding, so that the carbon-coated coating and an interface are compounded more tightly, and the service life of the conductive agent is prolonged. And the coating resistance of the carbon coating layer and the diaphragm resistance of the coated pole piece can be effectively reduced.

The invention discloses a low-temperature-resistant polyacrylamide flocculant suitable for a low-temperature water body and a preparation method of the low-temperature-resistant polyacrylamide flocculant. The flocculant is prepared from the following raw materials in parts by weight: 60 to 85 parts of acrylamide (AM), 15 to 40 parts of low-temperature-resistant functional monomer 2-acrylamide-2-methylpropanesulfonic acid (AMPS), 0.5 to 5 parts of hydrophobic modified monomer, 0.1 to 1.0 part of molecular chain regulator, 0.01 to 0.1 part of initiator, 120 to 200 parts of deionized water and 1 to 5 parts of post-added antifreezing agent. The product is prepared by an aqueous solution polymerization method. According to the invention, by introducing the rigid sulfonic monomer and the functional monomer with large steric hindrance and compounding the specific antifreezing agent, the extensibility and diffusion performance of a polymer molecular chain in low-temperature (less than or equal to 10 DEG C) water are remarkably improved, so that large and dense flocs can be quickly formed under the low-temperature condition, and an excellent flocculating settling effect is kept.

The invention discloses a preparation method of a grafted and substituted thiophene polymer material, which comprises the following steps: mixing poly (3-hexylthiophene), a grafting monomer, a catalyst and an auxiliary agent, and heating for reaction to obtain the grafted and substituted thiophene polymer material, the structural formula of the grafting monomer is as shown in formula (I); wherein B is fluorine, chlorine, bromine or iodine, A is a carbon atom or a nitrogen atom, and R is cyano, formyl, methoxycarbonyl or; according to the method, pre-synthesis of complex functional monomers is avoided, the main chain of the poly (3-hexylthiophene) can be directly modified without using an expensive catalyst or ligand, the polymerization reaction of the poly (3-hexylthiophene) is not interfered, and meanwhile, the method has the advantages of simplified steps and low cost.

The invention relates to the technical field of cable preparation, and provides a high-temperature-resistant flame-retardant cable, which comprises a cable core, and an insulating layer and a sheath layer which sequentially coat the cable core from inside to outside, the sheath layer is prepared from the following components in parts by weight: 8 to 10 parts of ethylene-vinyl acetate copolymer, 15 to 18 parts of ethylene-acrylate copolymer, 15 to 18 parts of polyvinyl chloride resin, 15 to 20 parts of filler, 10 to 12 parts of modified glass fiber, 3 to 4 parts of maleic anhydride grafted polyethylene, 0.5 to 1 part of ultraviolet absorbent, 1 to 2 parts of antioxidant and 1 to 2 parts of coupling agent. The cable has the beneficial effects that through introduction of the modified glass fiber and the functional monomer, the mechanical property and the flame retardant grade of the cable are improved, and the stability of the cable in a high-temperature environment is also remarkably enhanced.

The invention discloses a solvent-free vanillin-hydroxyethyl acrylate double-system closed waterborne polyurethane emulsion adhesive as well as a preparation method and a use method thereof, and belongs to the field of waterborne polyurethane emulsion adhesives. The invention is mainly prepared from the following components in parts by weight: 40 to 50 parts of soft segment monomer, 50 to 60 parts of hard segment monomer, 20 to 40 parts of sealing agent, 0.02 to 0.15 part of catalyst, 0.4 to 0.6 part of emulsifier, 0.2 to 0.6 part of initiator, 4 to 12 parts of neutralizer, 5 to 15 parts of functional monomer and 340 to 360 parts of deionized water. According to the double-system closed waterborne polyurethane emulsion adhesive disclosed by the invention, rapid crosslinking curing of the adhesive can be realized through thermocuring, the highest hardness of an adhesive layer can reach about 26 MPa, the adhesive strength is high, and the mechanical property is relatively good.

The invention provides a preparation method of an acid and alkali resistant acrylate adhesive and a preparation method of a pressure-sensitive adhesive tape. The preparation method comprises the following steps: mixing 30-60 parts of an acrylate soft monomer, 10-30 parts of an acrylate hard monomer, 2-10 parts of an acrylate functional monomer, 0.01-0.5 part of an initiator and a solvent; supplementing an initiator, and carrying out heat preservation reaction; diluting to obtain acrylic resin; adding a curing agent and mixing to obtain an acrylate adhesive precursor; adding 1-10 parts of polybenzoxazole fibers, 1-10 parts of a silane coupling agent and a solvent to obtain an acid and alkali resistant acrylate adhesive; and coating the acid and alkali resistant acrylate adhesive on a base material to obtain the acid and alkali resistant acrylate pressure-sensitive adhesive tape. The acid and alkali resistant acrylate adhesive and the pressure-sensitive adhesive tape prepared by the invention have excellent acid and alkali resistance, the acid and alkali resistant pressure-sensitive adhesive tape can effectively protect an electronic element from being corroded by acid and alkali, the edge of the pressure-sensitive adhesive tape is free of upwarp and bubbles, and no adhesive residue exists after a film is uncovered.

The invention relates to the field of high polymer material synthesis, and discloses an ultrasonic-enhanced water-soluble nano polymer synthesis method, which comprises the following steps: synergistically regulating monomer dispersion and free radical activation processes by adopting low-frequency and high-frequency ultrasonic alternating action; the ultrasonic power and the action time sequence are dynamically adjusted based on the real-time temperature and PDI data, and molecular chain thermal fracture is inhibited; reaction parameters are globally optimized in combination with a genetic algorithm, so that the yield and the quality are synchronously improved; a functional monomer containing a sulfonic group and an amide group is selected, and an ultrasonic cavitation effect is utilized to directly realize in-situ embedding of a functional group into a polymer main chain. The technical bottlenecks that traditional single-frequency ultrasonic energy distribution is uneven and a post-modification process is complex are broken through, and the obtained nano polymer has the characteristics of high water solubility, narrow particle size distribution and customizable functionalization and is suitable for the fields of medical carriers, environment-friendly film materials and the like.

The application belongs to the technical field of oil and gas field development, and provides a phase permeability improver, a fracturing fluid system containing the same, and respective preparation methods and applications. The phase permeability improver is obtained by copolymerization and hydrolysis of acrylamide AM, a functional monomer 2-acrylamido-2-methylpropanesulfonic acid AMPS, and cationic hydrophobic monomers A and B; the cationic hydrophobic monomer A is at least one of tetradecyl dimethyl allyl ammonium chloride, hexadecyl dimethyl allyl ammonium chloride, and octadecyl dimethyl allyl ammonium chloride; the cationic hydrophobic monomer B is at least one of methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride, and acryloyloxyethyldimethyl benzyl ammonium chloride; the phase permeability improver and the fracturing fluid system containing the same can significantly reduce the water phase permeability after fracturing operation, while having a smaller influence on the oil phase permeability, and have a significant effect of stabilizing oil and controlling water, and can significantly improve the stable production effect of fracturing operation in a low-permeability oil reservoir.

The invention constructs a universal visual virus molecularly imprinted sensor modified with an anti-protein coating, the sensor uses magnetic Fe3O4 as an imprinting carrier, HBV as a template and dopamine as a functional monomer for imprinting to obtain a molecularly imprinted polymer with a polydopamine coating (PDA), and before the template is removed, the molecular imprinting polymer with the polydopamine coating (PDA) is separated from the template, so that the molecular imprinting polymer with the polydopamine coating (PDA) is obtained. The surface of the PDA layer is covered with a slightly cross-linked PMEO2MA layer through a water precipitation polymerization method, and the polymer can effectively reduce non-specific protein adsorption; and finally, exposing an imprinting cavity of the PDA layer by eluting the template molecules. On the other hand, potassium permanganate (KMnO4) is used as a signal output molecule, and when no target object exists, the strong reducibility of PDA can enable KMnO4 entering the imprinting cavity to be subjected to a color fading reaction. Based on the principle, high-specificity colorimetric visual detection on the HBV is realized. The sensor can be combined with a smart phone through naked eyes to carry out visual semi-quantitative analysis and carry out quantitative detection through ultraviolet rays, and the universality of the sensor can be confirmed through a template replacement experiment. And meanwhile, the sensor shows an excellent cost advantage. The diagnosis which is high in sensitivity, low in cost and capable of achieving rapid visualization shows huge potential in practical application, and particularly has important application value in infectious disease screening and monitoring work in areas with limited resources.

The invention relates to the technical field of adsorption materials, and discloses a post-modified imine-COF adsorbent and a preparation method and application thereof, the adsorbent comprises the following structural units: a COF skeleton, which is a two-dimensional or three-dimensional porous skeleton formed by an aromatic aldehyde monomer and an amino monomer through a Schiff base reaction; the imine group is formed in a COF skeleton through a post-modification reaction, and the imine group is-C = NR, r is selected from one or more of a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted heterocyclic group and a hydrogen atom. The adsorbent retains excellent structural characteristics of the COF material, realizes high density and uniform distribution of functional groups, and avoids interference of functional monomers on crystal nucleation and growth, so that the adsorption performance of the adsorbent is improved, and the adsorbent can efficiently capture rare earth when being applied to a rare earth-containing solution.

The present invention provides an organic phosphonic acid betaine and a preparation method thereof, specifically an ammonium phosphonic acid betaine containing a glycidyl group. The organic phosphonic acid betaine can be used as a functional monomer for free radical grafting modification of the surface of a polymer material such as polyolefin, or can be mixed with acrylate, acrylonitrile or other olefin monomers for copolymerization to prepare an amphoteric ionomer. The organic phosphonic acid betaine can also be used for ring-opening grafting modification of polymer materials such as starch, cellulose, polyurethane, and polyamide containing amino or hydroxyl groups in their structures. At the same time, the phosphonic acid betaine imparts functional effects such as zwitterionization, hydrophilicity, antibacterial properties, and antifouling properties to the obtained polymer material. The organic phosphonic acid betaine also has high chemical stability in acidic and alkaline water environments.

The invention discloses a super-retarding type polycarboxylic acid water reducing agent and a preparation method and application thereof, and belongs to the field of concrete water reducing agents. The preparation method comprises the following steps: taking acrylic acid AA, isobutenol polyoxyethylene ether HPEG and hydroxyethyl acrylate HEA as monomers, taking mercaptopropionic acid MPA as a chain transfer agent, taking hydrogen peroxide H2O2 and L-ascorbic acid Vc, and mixing in proportion to serve as an initiator; preparing a first and second monomer mixed solution; adding bottom water into the reaction kettle, and carrying out stepwise polymerization reaction; and cooling the reaction liquid, adjusting the pH value, filtering, and discharging to obtain the product. According to the invention, an ester functional monomer hydroxyethyl acrylate HEA is introduced, and a step-by-step polymerization technology is adopted to control the dispersion process of water reducing agent molecules on cement particles, so that the water reducing agent molecules continuously disperse the cement particles within a certain period of time; the problem that the slump loss is too fast due to long-time and long-distance transportation of concrete or transportation in high-temperature weather is effectively relieved.

The invention relates to the technical field of oilfield chemistry, and provides a reinjection water instant hydrophobic association polymer for fracturing and a preparation method thereof. The preparation method comprises the following steps: preparing a polymerizable hydrophobic association micelle from a hydrophobic functional monomer and a nonionic polarity regulator, mixing the polymerizable hydrophobic association micelle solution with a conventional monomer aqueous solution, regulating the molecular weight of the copolymer by a molecular weight regulator, reacting, granulating, drying and crushing to obtain the reinjection water instant hydrophobic association polymer. By comprehensively utilizing the synergistic effect of multi-element supramolecular force of a ternary hydrophobic functional monomer, the stability of associated micelles is regulated and controlled, and a salt-resistant polymer three-dimensional network structure with a dense association network and a strong association effect is obtained; a polarity regulator containing a nonionic hydrophilic structure is introduced, a hydration layer is formed on the surface of associated micelles by utilizing a self-assembly effect, a water phase aggregation effect and an ion shielding effect of a hydrophobic structure are weakened, stretching of a molecular chain in a water phase is facilitated, online mixing instant efficiency of reinjection water is obtained, and high salt resistance and strong sand-carrying performance are achieved.

The invention relates to the technical field of high polymer materials, and discloses a high-durability pressure-sensitive adhesive with low VOCs release and a preparation method thereof.The high-durability pressure-sensitive adhesive is prepared from, by weight, 50-80 parts of acrylate copolymer, 0.5-5 parts of cross-linking agent, 10-30 parts of tackifying resin, 1-10 parts of inorganic filler, 0.1-2 parts of antioxidant and 20-50 parts of solvent. Wherein the tackifying resin is at least one of hydrogenated petroleum resin and glycerol ester of rosin, and the inorganic filler is one of nanoscale silicon dioxide and calcium carbonate. Butyl acrylate is used as a main monomer, 2-ethylhexyl acrylate is used as a comonomer, acrylic acid is used as a functional monomer, benzoyl peroxide is used as an initiator, free radical polymerization is carried out at the temperature of 60-85 DEG C under the protection of nitrogen for 4-8 hours, and a copolymer chain with the molecular weight distribution index (PDI) smaller than or equal to 2.5 is formed, so that the viscosity and elasticity of colloid can be balanced; the peeling strength and the weather resistance are improved, and the colloid is prevented from being too soft or embrittled.

The invention relates to the field of secondary batteries, and particularly discloses a wetting agent, positive electrode slurry, a preparation method and application. The wetting agent comprises an acrylate monomer, a cyano-containing monomer, a vinyl functional monomer, a surfactant and an initiator. The glass transition temperature of the wetting agent ranges from-50 DEG C to 30 DEG C, and after the wetting agent is soaked in electrolyte for 72 h, the mass swelling rate ranges from 500% to 3000%, and the volume swelling rate ranges from 50% to 1000%. A certain amount of the wetting agent is added into positive electrode slurry and is mixed and matched with a binder for use, so that the wettability of an electrolyte of a pole piece can be improved, a battery cell can quickly absorb the electrolyte, the electrolyte retention capacity of the battery is better, and the rate capability and the cycle performance of the battery are improved. And meanwhile, the wetting agent is of a linear structure and plays a long-range connection role in the pole piece, so that the adhesive force of the pole piece is improved, and the possibility that the pole piece falls off in the circulation process is reduced, thereby further improving the cycle performance of the battery.

A preparation method for a dual-enhanced interface solid polymer electrolyte by means of step-by-step polymerization, the preparation method comprising: mixing a matrix monomer and a first photoinitiator to obtain a mixed slurry, and illuminating same to obtain a pre-polymerized slurry; adding a lithium salt and a second photoinitiator to the pre-polymerized slurry, mixing same to obtain a polymer slurry, dividing the polymer slurry into a first polymer slurry and a second polymer slurry, adding a nitrogen-containing functional monomer to the first polymer slurry to obtain a polymer slurry A, and adding a fluorine-containing functional monomer to the second polymer slurry to obtain a polymer slurry B; and pouring the polymer slurry A on a first face of a base membrane, performing a treatment on same, pouring the polymer slurry B on a second face of the base membrane, and performing a treatment on same, so as to obtain a stepwise-polymerized dual-enhanced interface solid polymer electrolyte. The solid polymer electrolyte is prepared by means of using a step-by-step polymerization method, thereby optimizing a positive electrode side interface and a negative electrode side interface, and realizing continuous large-scale production of a solid polymer electrolyte.

The preparation method of the CO2 thickening-downmixing-tracing nano carbon needle comprises the following steps: step 1, modifying a nitrogen-doped activated carbon quantum dot by adopting a silane coupling agent to obtain a modified activated carbon quantum dot; 2, mixing methyl silicone oil, a silane coupling agent and a thickening functional monomer to obtain a mixture, and activating; adding a catalyst and fully reacting to obtain a fluorine-containing siloxane polymer; 3, mixing the activated carbon quantum dots obtained in the step 1 and the fluorine-containing silane polymer solution obtained in the step 2, and fully reacting to obtain the CO2 thickening-downmixing-tracing nano carbon needle; according to the nano carbon needle, the viscosity of supercritical carbon dioxide is increased, the miscible phase pressure is reduced, meanwhile, in-situ emulsification tackifying can be carried out in high-water-content and high-permeability pores, and CO2 pressure driving-tracing-burying integration of an oil and gas field can be achieved, so that a win-win mode of green low-carbon development and economic benefits is constructed.

The invention relates to a heat-conducting insulating cable material and a preparation method thereof, and belongs to the technical field of cable materials, the heat-conducting insulating cable material comprises the following raw materials: 50-60 parts of polypropylene, 25-30 parts of SEBS, 12-18 parts of a modified heat-conducting insulating material, 2-4 parts of a plasticizer, 6-8 parts of an antioxidant, 3-4 parts of a lubricant and 7-10 parts of a reinforcing filler; according to the technical scheme, modified hydroxylated boron nitride is combined with organic intercalated montmorillonite, then a silane coupling agent is grafted, and a silanization reinforced material is obtained; combining the silanization reinforcing material with a branched functional monomer to obtain an amino-terminated hyperbranched composite material; combining the amino-terminated hyperbranched composite material with an interface modifier to obtain a modified heat-conducting insulating material; mixing polypropylene, SEBS, the modified heat-conducting insulating material, a plasticizer, an antioxidant, a lubricant and a reinforcing filler, and performing extrusion granulation to obtain the heat-conducting insulating cable material. The mechanical property, the heat-conducting property and the insulating property of the cable material are improved.

The invention relates to the technical field of optical thin films, in particular to a high-transmittance low-haze upper diffusion film and a preparation method thereof. A high-light-transmittance low-haze upper diffusion film comprises a transparent base film and a nano coating coated on the surface of the transparent base film, and the nano coating comprises the following preparation raw materials: 30-40 parts of polyurethane modified acrylate, 20-30 parts of a high refractive index monomer, 10-15 parts of a functional monomer, 1.5-2 parts of nanoparticles and 2-4 parts of a photoinitiator. Wherein the nano particles are modified AlO / SiO nano composite particles. Through nano particle modification, functional monomer compounding and resin matrix optimization, the contradiction between light transmittance and mechanical performance of a traditional light diffusion film is broken through, comprehensive upgrading of optical performance (light transmittance / haze), mechanical strength (hardness / flexibility) and weather resistance (high temperature / aging resistance) is achieved, and the light diffusion film is suitable for high-end scenes such as ultra-thin OLED screens and vehicle-mounted display.

The invention relates to the technical field of polycarboxylate superplasticizers, and discloses a durability-enhanced polycarboxylate superplasticizer and a preparation method thereof.The preparation method comprises the following steps that raw materials such as a polyether macromonomer are prepared, the polyether macromonomer and the like have the requirements for purity and dosage, deionized water and the polyether macromonomer are added into a reaction kettle to form a solution A, and the solution A is prepared; and preparing an initiator solution B with the mass concentration of 10-20% from ammonium persulfate, heating to 60-80 DEG C, stirring, firstly adding 1 / 3 of the initiator solution B to react, then preparing a mixed monomer solution from acrylic acid and the like, dropwise adding the mixed monomer solution and the residual initiator solution B within 2-3 hours, carrying out heat preservation reaction, cooling, and regulating the pH value to 6-8 by using sodium hydroxide to obtain a finished product. The sulfonic acid group of the introduced sodium methallyl sulfonate functional monomer can enhance the electrostatic repulsion between water reducer molecules and cement particles, so that the dispersing performance of the water reducer is improved, the agglomeration of the cement particles can be inhibited to a certain extent, and the fluidity of concrete can be maintained.