2016 results about "Functional monomer" patented technology

Provided in the present invention are a polyacrylic acid or polyacrylate water-based binder, and a preparation method therefor and the use thereof. The polyacrylic acid or polyacrylate water-based binder is a polymer obtained by polymerizing polymeric monomers, the polymeric monomers comprising a hard monomer, a soft monomer and a functional monomer. The polyacrylic acid or polyacrylate water-based binder provided by the present invention has relatively high binding power and relatively good flexibility and electrochemical stability, and has good application prospects in the field of negative electrode sheets of lithium-ion batteries.

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.

To provide a production method of a novel crosslinked block copolymer capable of producing polymer particles of which the particles are hardly collapsed.SOLUTION: A production method of a crosslinked block copolymer contains obtaining a block copolymer from two or more kinds of polymerizable monomers (first polymerization) and obtaining a crosslinked block copolymer by adding one or more kinds of polymerizable monomers out of the two or more kinds of the polymerizable monomers and a poly functional monomer to the block copolymer (second polymerization). The second polymerization preferably contains crosslinking the block copolymers to each other.SELECTED DRAWING: None

The invention relates to the technical field of additives for concrete, and particularly discloses a waterproof synergistic interface agent, an interface permeation type water reducing agent mother solution, an interface permeation type water reducing agent and a preparation method of the interface permeation type water reducing agent. The waterproof synergistic interface agent is prepared from the following raw materials: organic acid modified nano inorganic powder and polyhydroxy acrylate. Through the design of the raw materials of the waterproof synergistic interface agent, the surface active groups, the adsorption performance and the dispersity of the nano inorganic powder are increased, the grafting degree of polyhydroxy acrylate with other large monomers, small monomers and functional monomers is improved, the polyhydroxy acrylate is grafted or dispersed in a water reducing agent mother solution through a polymerization reaction, and the waterproof synergistic interface agent is prepared. By combining the synergistic anti-seepage filling effect of the nano inorganic powder, the internal phase interface structure of the concrete is improved, the adhesiveness of different interfaces and the binding force of new and old concrete interfaces are increased, and the hydration hardening product can improve the compactness and toughness of the concrete and improve the ion penetration resistance and mechanical property of the concrete; the problem that an existing water reducing agent is single in function is solved.

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 relates to the technical field of organic chemistry and environmental science, in particular to a fluorine-philic and hydrophobic functional monomer, a synthesis method and application thereof, a fluorine-containing compound detection electrode based on the functional monomer and a preparation method of the fluorine-containing compound detection electrode. The chemical structure of the fluorine-philic and hydrophobic functional monomer comprises pyrrole-3-carboxylic acid and fluorine telomer alcohol bonded with the pyrrole-3-carboxylic acid. A long fluorocarbon chain is introduced into a basic functional monomer, so that the fluorine affinity and hydrophobicity of the monomer to a fluorine-containing compound are remarkably improved. Therefore, a derivative pyrrole-3-carboxylic acid of pyrrole is used as a basic functional monomer, and the fluorine telomeric alcohol is bonded on the pyrrole-3-carboxylic acid, so that a novel functional monomer with fluorine-philic and hydrophobic functions is synthesized. The functional monomer realizes specific capture of fluorine-containing organic matter molecules by simultaneously utilizing amido with affinity to perfluorinated compounds in a pyrrole ring and unique fluorine-fluorine interaction force. A perfluorinated compound detection method established based on the functional monomer can avoid interference caused by a sample matrix.

The invention relates to the field of coatings, and particularly discloses an anti-aging water-based acrylic coating and a preparation method thereof. The anti-aging water-based acrylic coating is prepared from the following raw materials in parts by weight: 55 to 60 parts of fluorosilicone modified acrylic emulsion; 8-18 parts of an anti-aging agent; 8 to 12 parts of silica sol; 6-10 parts of a flame retardant; 4-8 parts of heavy calcium powder; 6-10 parts of a pigment; 0.5 to 1 part of a thickening agent; the preparation method comprises the following steps: S1, preparing a fluorosilicone modified acrylic emulsion: carrying out blending reaction on an acrylic functional monomer, styrene and polyhedral oligomeric silsesquioxane with an emulsifier and an initiator to obtain the fluorosilicone modified acrylic emulsion; and S2, preparing the coating. The product disclosed by the invention has many excellent properties such as high hardness, good water resistance and excellent ultraviolet resistance, so that the product has excellent aging resistance and a good protection effect on an outer wall.

The invention discloses a two-photon polymerization 3D printing photoresist based on a boric acid ester bond and a preparation method thereof. The photoresist comprises a functional monomer containing the boric acid ester bond, a multifunctional acrylate monomer and a two-photon initiator, according to the two-photon polymerization 3D two-photon printing photoresist prepared by adopting the functional monomer containing the dynamic boric acid ester bond to reinforce and toughen conventional acrylic ester, the performance of resin is regulated and controlled by using different types of boric acid ester monomers and adding different proportions of boric acid ester monomers, the mechanical strength of the obtained photoresist can be regulated and controlled, and the performance of the photoresist is improved. Different parameters such as printing effect, hot residual weight and the like can be selected for a final application scene, and the method has a very wide application prospect.

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 relates to a ratiometric fluorescent molecularly imprinted polymer, a paper-based sensor and preparation and application thereof, and relates to the technical field of food safety detection. The preparation method comprises the following steps: uniformly mixing a functional monomer acrylamide, a template molecule fleroxacin, an initiator, modified SiO2 nanoparticles and a cross-linking agent A to obtain a mixture, then adding a binuclear Eu complex, a boron-nitrogen-doped titanium carbide two-dimensional layered material, a cross-linking agent B and acetic acid, initiating a polymerization reaction, and removing the template molecule to obtain the composite material. The ratio fluorescent molecularly imprinted polymer is obtained. The molecularly imprinted ratiometric fluorescent paper-based sensor can specifically recognize fleroxacin, can be used for detecting fleroxacin residues in meat products, and provides assistance for the development of a food rapid detection technology.

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 modified hydroxyl acrylic emulsion and a preparation method thereof, and belongs to the technical field of environment-friendly paints.The modified hydroxyl acrylic emulsion is prepared from, by weight, 35-50 parts of acrylate monomer, 5-10 parts of functional monomer, 5-10 parts of hydroxyethyl acrylate, 0.3-1.5 parts of initiator, 1-2 parts of vinyl siloxane, 1-2 parts of emulsifier, 0.3-1 part of neutralizer and 30-50 parts of deionized water; the preparation method comprises the following steps: adding an acrylate monomer, a functional monomer, hydroxyethyl acrylate and vinyl siloxane into deionized water, adding an initiator and an emulsifier, heating to 60-75 DEG C, stirring at a constant speed for 30 minutes, and adding a neutralizer to prepare a modified hydroxyl acrylic emulsion; a functional monomer structure contains an antibacterial dichloropyrimidine monomer structure, a main body is an acrylic acid structure and has good compatibility with a matrix, a siloxane structure is introduced, a large number of hydroxyl groups are generated after hydrolysis, and the bonding performance with the coating matrix can be improved.

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 belongs to the technical field of polymers and lithium battery materials, and discloses a water-based silicon-carbon negative electrode binder for a lithium battery as well as preparation and application of the water-based silicon-carbon negative electrode binder. The water-based silicon-carbon negative electrode binder is obtained by copolymerizing the following monomers in percentage by mass: 30-50% of a hydrophilic monomer, 20-40% of a hydrophobic monomer and 10-30% of a functional monomer, the hydrophilic monomer is an unsaturated monomer containing carboxylic acid, amide and sulfonic acid groups; the hydrophobic monomer is at least one of acrylonitrile, methacrylonitrile, acrylate and methacrylate; the functional monomer is at least one of vinyl polysiloxane, sodium allysulfonate, sodium methallyl sulfonate, sodium p-styrenesulfonate and N-vinyl pyrrolidone. The water-based silicon-carbon negative electrode binder disclosed by the invention can enhance the binding force between silicon particles on the surface of a silicon-based negative electrode material and a current collector; meanwhile, the volume expansion of the silicon negative electrode material can be inhibited; the cycle performance is improved.

The invention relates to the technical field of thickeners, in particular to a temperature-resistant and salt-resistant thickener for fracturing and a preparation method thereof, the temperature-resistant and salt-resistant thickener for fracturing comprises the following raw materials: an acrylamide hydrophilic monomer, a sodium acrylate hydrophilic monomer, a salt-resistant monomer, an association monomer and a functional monomer, the preparation method comprises the following steps: mixing and dissolving a required amount of acrylamide hydrophilic monomer, sodium acrylate hydrophilic monomer, salt-resistant monomer, associated monomer and functional monomer in water to obtain a mixed solution, adjusting the pH value of the mixed solution, refrigerating the mixed solution, adding a required amount of low-temperature composite initiator, and carrying out a polymerization reaction to obtain a colloidal product, and cutting, sieving and drying the colloid product to obtain the product. The temperature-resistant and salt-resistant thickening agent has the advantages that the temperature-resistant and salt-resistant performance of the temperature-resistant and salt-resistant thickening agent for fracturing can be greatly improved by the aid of triple effects of'intrinsic strengthening, association promotion and electrostatic holding ';

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 provides an emulsion slow crosslinking type plugging control gel, which is in an oil-in-water type, and is prepared from the following raw materials in percentage by weight: 25 to 40 weight percent of nonionic monomer, 0.5 to 2 weight percent of dihydroxy anthraquinone, 5 to 16 weight percent of anionic monomer, 0.002 to 0.2 weight percent of initiator and the balance of water. The emulsion comprises the following components in percentage by weight: 10 to 35 percent of deionized water, 15 to 30 percent of non-polar solvent, 2 to 8 percent of emulsifier, 1 to 4 percent of emulsifying aid and 0.5 to 1.5 percent of phase inversion agent. According to the plugging adjusting gel, the modified functional monomer dihydroxy anthraquinone is added, and the dihydroxy anthraquinone and monomers such as acrylamide are copolymerized to form oil-in-water type polymer gel, so that the initial viscosity is low, the strength and the plugging rate are high, and the gelling time is controllable.

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 provides a polymer electrolyte with high interface stability and a preparation method and application thereof. The polymer electrolyte comprises a polymer matrix, a porous support material, a lithium salt, a solvent and an initiator. The polymer matrix is formed by in-situ copolymerization of a methacrylate polymer monomer as a rigid skeleton monomer and a methacrylate polymer monomer with a functional group as a functional monomer. The polymer electrolyte prepared by an in-situ curing method has high room-temperature ionic conductivity, a wide electrochemical window (gt; 5.3 V) and excellent cycling stability. The functional monomer is helpful for forming a high-stability SEI film rich in inorganic components on a positive electrode and a lithium metal / electrolyte interface, the stability of the electrode / electrolyte interface is improved, and the growth of lithium dendrites is inhibited, so that the mechanical property and the safety performance are improved. The polymer electrolyte can be widely applied to battery systems such as high-voltage lithium ion batteries, high-specific-energy lithium ion batteries and high-safety lithium ion batteries.

The invention relates to the field of composite materials, and discloses a carbon fiber shell of a camera and a preparation method thereof, the carbon fiber shell comprises the following components: a carbon fiber reinforcement layer, the carbon fiber is subjected to oxidation treatment and coated with an interface coating, and the interface coating comprises a silane coupling agent and nanoparticles; the matrix resin is prepared from epoxy resin, a flexible reinforcing agent, a shape memory functional monomer, a dynamic crosslinking component, a nano reinforcing component and a curing agent; the intelligent functional coating comprises a temperature-sensitive polymer and a conductive filler; the carbon fiber reinforcement layer is made of carbon fibers subjected to acid liquor oxidation treatment, and the acid liquor is composed of nitric acid and sulfuric acid according to the volume ratio of 1: 3. The impact toughness and recovery capability are enhanced through the dynamic crosslinking matrix, the bonding strength is improved through the nano-particle interface coating, dynamic rigidity adjustment and crack monitoring are achieved through the intelligent functional coating, the service life is prolonged, and the problems of brittleness failure and insufficient long-term stability of an existing shell are solved.

The invention relates to the technical field of concrete admixtures, in particular to a high-performance polycarboxylate superplasticizer and a preparation method thereof. The high-performance polycarboxylate superplasticizer comprises the following components: a polycarboxylate superplasticizer and modified cellulose ether, the polycarboxylate superplasticizer is prepared by polymerization reaction of vinyl polyether macromonomer, unsaturated carboxylic acid and functional monomer under the action of initiator and chain transfer agent. According to the high-performance polycarboxylic acid water reducing agent provided by the invention, the polycarboxylic acid water reducing agent and the modified cellulose ether are compounded and applied to concrete, the initial fluidity of the concrete is good, the slump retaining property is good, the water-retaining property, the wrapping property and the cohesiveness of the concrete are good, and the segregation and bleeding phenomena are avoided when the concrete is mixed with the high-performance polycarboxylic acid water reducing agent.

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 discloses a self-healing polyolefin packaging adhesive film and a preparation method thereof. The self-healing polyolefin packaging adhesive film is prepared from the following raw materials in parts by mass: a polyolefin copolymer, a self-healing functional monomer, a cross-linking agent, an antioxidant, a light stabilizer and a tackifier. According to the packaging adhesive film, dynamic borate bonds with reversible properties are introduced into a polyolefin adhesive film material to construct a topologically rearranged cross-linked network structure, so that the packaging adhesive film for the photovoltaic module is endowed with excellent adhesion performance and self-healing efficiency.