350 results about "Hyperbranched polymers" patented technology

The invention provides a modified polyimide fiber and a preparation method and application thereof, and the preparation method comprises the following steps: S1, adding a polyimide fiber into an alkali solution for reaction, cleaning a reactant with acid and alkaline alcohol, and drying to obtain an activated polyimide fiber; s2, adding the activated polyimide fiber into an alkaline alcohol solution, adding into a first silane coupling agent, carrying out modification reaction, adding modified epoxy resin, and mixing to obtain a bottom layer component; s3, adding the activated polyimide fiber into an alkaline alcohol solution, adding a second silane coupling agent and a hyperbranched polymer, and carrying out a modification reaction to obtain a surface layer component; and S4, covering the bottom layer component with the surface layer component, drying to obtain the modified polyimide fiber, and optimizing the coating to obtain the modified polyimide fiber with high mechanical property, excellent atomic oxygen resistance and ultraviolet resistance and environmental adaptability.

The invention provides a preparation method of a hydrophilic antibacterial modified polylactic acid wire, which comprises the following steps: S1) plying and twisting polylactic acid filaments to obtain polylactic acid plied yarns; s2) weaving the polylactic acid plied yarn to obtain a polylactic acid wire; s3) performing low-temperature plasma treatment on the polylactic acid fiber to obtain a surface-activated polylactic acid wire; and S4) transferring the treatment solution to the surface of the surface-activated polylactic acid wire rod to obtain the hydrophilic antibacterial modified polylactic acid wire rod. Compared with the prior art, the preparation method disclosed by the invention has the advantages that a low-temperature plasma technology and a carboxyl-terminated hyperbranched polymer / polydopamine blended solution coating technology are utilized to achieve a synergistic effect, hydrophilic and antibacterial functions are simultaneously given to the modified polylactic acid wire rod, and the modification effect is ensured to have very high stability and durability; in addition, according to the method, the main component of the polylactic acid in the suture fibers is reserved, and the biocompatibility and the biological safety of the polylactic acid material are ensured.

The invention discloses an antistatic protective glove and a preparation method thereof, and relates to the technical field of protective gloves. The antistatic protective glove is prepared from the following raw materials in parts by weight: 50 to 60 parts of natural latex, 40 to 50 parts of neoprene latex, 0.4 to 2 parts of potassium hydroxide, 1.2 to 1.8 parts of peregal O, 1.5 to 3 parts of sulfur, 1 to 2 parts of accelerant BZ, 3.5 to 5 parts of antistatic agent, 0.5 to 1 part of sodium carboxymethyl cellulose and 1.2 to 1.8 parts of anti-aging agent. The preparation method of the antistatic agent comprises the following steps: firstly, reacting 1, 3, 5-tri (2, 3-epoxypropoxy) benzene with N1, N7 dimethyl heptane-1, 7-diamine to obtain a hyperbranched polymer, and then carrying out quaternization on the hyperbranched polymer and chlorinated octadecane to obtain the antistatic agent. The antistatic protective glove provided by the invention has excellent antistatic performance and anti-aging performance.

The invention relates to the technical field of rubber, and relates to a wear-resistant rubber composite material and a preparation method thereof. The wear-resistant rubber composite material is prepared from the following components in parts by weight: 100 parts of a rubber matrix, 30 to 60 parts of multi-stage core-shell structure composite filler, 10 to 15 parts of carbon black, 1.0 to 2.5 parts of a vulcanizing agent, 0.5 to 2.0 parts of an accelerant, 3 to 6 parts of an active agent and 1 to 3 parts of an anti-aging agent, the multi-stage core-shell structure composite filler sequentially comprises a rigid inorganic nano-particle core, a rigid inorganic nano-particle core and a rigid inorganic nano-particle core from inside to outside, the core is coated with the first shell layer, the first shell layer is a mesoporous silica layer, and a silane coupling agent containing sulfur groups is modified in the mesoporous silica layer; and the second shell layer is coated outside the first shell layer and is a hyperbranched polymer layer. According to the wear-resistant rubber composite material provided by the invention, the comprehensive mechanical property and wear resistance of the rubber composite material are improved.

The invention relates to the technical field of non-woven fabrics, and particularly discloses a soft SMS non-woven fabric and a preparation method thereof. The soft SMS non-woven fabric comprises a spunbond layer and a melt-blown layer, and the spunbond layer comprises the following raw materials in parts by weight: 65-80 parts of spunbond PP, 5-10 parts of a PE / PP copolymer, 2-4 parts of PP-g-MAH, 4-6 parts of a dopamine grafted hyperbranched polymer and 7-11 parts of mineralized nanocellulose. The soft SMS non-woven fabric can be used in the fields of medical protection, hygienic product materials, industrial filtration and the like, and is comfortable in hand feeling and excellent in softness.

The invention discloses a PP (polypropylene) material with scratch resistance. The PP material is prepared from the following raw materials in parts by weight: 75-85 parts of a PP matrix; 3 to 8 parts of modified nano silicon dioxide; 5 to 10 parts of an ethylene-octylene copolymer (POE); 2-5 parts of an organosilicon elastomer; 1 to 4 parts of hyperbranched polymer (HBP); 1 to 3 parts of self-repairing microcapsules; 2-5 parts of nano calcium carbonate; 0.3 to 0.8 part of an antioxidant; and 0.5-2 parts of a dispersant. Through the synergistic effect of the modified nano silicon dioxide, the nano calcium carbonate and the hyperbranched polymer (HBP), the surface hardness and the scratch resistance of the PP material are improved, the compatibility of the nano silicon dioxide and the nano calcium carbonate with a PP matrix is enhanced through modification treatment of the nano silicon dioxide and the nano calcium carbonate, and the mechanical property and the wear resistance of the material are improved.

The invention provides high-grinding-efficiency color paste, a preparation method thereof and dispersed ink, and belongs to the technical field of dispersed ink, and the high-grinding-efficiency color paste comprises the following components in percentage by weight: 15%-30% of disperse dye toner, 15%-25% of a dispersing agent, 5%-15% of resin ammonium salt, 10%-20% of a dissolution promoting mixture, 0.5%-2% of a wetting agent and the balance of water; the dispersing agent comprises a hyperbranched polymer and a sodium naphthalene sulfonate improved polymer; the hyperbranched polymer takes a benzene ring as a center, hydrophobic groups and hydrophilic groups on a branched chain are randomly distributed, the hydrophilic groups of the branched chain comprise carboxylate and sulfonate, and the hydrophobic groups of the branched chain comprise alkane, ester and aryl. According to the invention, the hyperbranched polymer and the sodium naphthalene sulfonate improved polymer are mixed with the dispersing agent, so that the problem of abrupt change of ink viscosity can be avoided when the content of ink toner is relatively high, thereby obtaining the color paste with strong dispersion and high stability, and further obtaining the dispersed ink with good stability.

The invention relates to the technical field of plastic processing aids, and particularly discloses a pearlescent color master batch for PET bottle blowing and a preparation method of the pearlescent color master batch. The pearlescent color master batch for PET bottle blowing comprises the following raw materials in percentage by mass: 65-75% of PET carrier resin, 2-8% of a composite dispersant, 1-2% of a lubricant, 15-25% of an organic pigment and 6-10% of a pearlescent pigment, the composite dispersant comprises the following raw materials: macrocyclic oligoester, a hyperbranched polymer and an ionic liquid. When the pearlescent color master batch for the PET blown bottle is applied to preparation of the PET blown bottle, uniform dispersion can be achieved, the glossiness and the pearlescent effect of the PET blown bottle are remarkably improved, the uniformity and consistency of the appearance of a product are kept, and the PET blown bottle is endowed with unique metal texture.

The invention belongs to the technical field of fresh keeping of agricultural products, and particularly relates to a fresh-keeping packaging film capable of inhibiting browning and a preparation method of the fresh-keeping packaging film. The fresh-keeping packaging film sequentially comprises a first PE layer, a second PE layer, a third PA layer, a fourth PA layer and a fifth PE-EVA-POE layer from the first layer to the fifth layer from outside to inside, the first PE layer comprises the following raw materials in parts by weight: 25-40 parts of low-density polyethylene, 15-30 parts of linear low-density polyethylene, 30-60 parts of high-density polyethylene and 2-5 parts of a modified nano material; the modified nano material is prepared by mixing nano titanium dioxide, nano silicon dioxide and nano zinc oxide and then sequentially reacting with a silane coupling agent KH570 and a hyperbranched polymer. The prepared fresh-keeping packaging film has an excellent fruit browning prevention effect and is high in puncture resistance and good in low-temperature resistance effect.

The invention discloses a dispersing agent, an electrode plate and a battery. The dispersing agent comprises a hyperbranched polymer, and the hyperbranched polymer contains a hyperbranched core, a plurality of branched repeating units and a connecting chain; wherein the branched repeating unit comprises at least one of carbonyl and ether, and the connecting chain is connected with the hyperbranched core and the branched repeating unit. The hyperbranched polymer in the dispersant can effectively anchor electrode materials of the electrode slurry through the synergistic effect of the hyperbranched core and the branched repetitive unit contained in the hyperbranched polymer, so that the dispersibility of each electrode material is improved, and the rheological property of the electrode slurry is adjusted. The connecting chain effectively enhances the stability of connection between each branched repeating unit and the hyperbranched core, so that the molecular structure of the hyperbranched polymer and the stability of the dispersion effect are improved. Any one of the electrode plate and the battery contains the dispersant provided by the invention.

The invention discloses a flame-retardant B1-grade sheath material and application thereof in cables, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by weight: 40-50 parts of an ethylene-vinyl acetate copolymer, 10-20 parts of an ethylene-vinyl alcohol copolymer, 10-20 parts of a functional hyperbranched polymer, 30-40 parts of a metal organic framework modified composite flame retardant, 3-5 parts of a compatilizer, 0.8-1.2 parts of an antioxidant and 0.4-0.6 part of a lubricant. The functional hyperbranched polymer comprises structural units introduced by the following monomers: triphenyl isocyanate thiophosphate and N-[(4-methyl-1H-benzotriazole-1-yl) methyl] diethanol amine. The material is high in tensile strength, sufficient in thermal shock resistance and excellent in aging resistance and flame retardance.

The invention discloses a sodium ion battery conductive agent and a preparation method thereof, and belongs to the technical field of sodium ion batteries. The sodium ion battery conductive agent comprises a hyperbranched polymer and a carbon-based conductive material, the hyperbranched polymer catalyzes 2-thiophenecarbonitrile through trifluoromethanesulfonic acid to generate 2, 4, 6-tri (2-thienyl)-1, 3, 5-triazine through polymerization, then aldehyde groups are introduced to prepare thienyl triazinyl formaldehyde, and the thienyl triazinyl formaldehyde reacts with 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine to prepare the sodium ion battery conductive agent. A triazine structure in the hyperbranched polymer in the conductive agent prepared by the invention is cooperated with a thiophene unit, so that the conjugation effect and the electron transmission efficiency can be remarkably enhanced; the flexible and hyperbranched structure of the thiophene ring can buffer volume expansion in the charging and discharging process, and the cycle performance is prolonged; the hyperbranched polymer can be effectively cross-linked with the carbon-based conductive material to form a multi-path transmission channel, so that the charging specific capacity of the battery is improved.

The invention discloses a solid electrolyte membrane, a preparation method and a lithium battery. The solid electrolyte membrane comprises a polymer electrolyte, the structure of the polymer electrolyte is a hyperbranched polymer, a molecular chain of the polymer electrolyte contains a polyoxyethylene chain segment, ether oxygen atoms in an amorphous phase region can form coordination with lithium ions, migration of the lithium ions is facilitated, and the ionic conductivity of the solid electrolyte membrane is improved; besides, a nitrogen and sulfur element annular structure is introduced into the hyperbranched polymer, so that the mechanical strength of the solid electrolyte membrane can be effectively improved, the ionic conductivity of the solid electrolyte membrane can be further improved, the interface impedance can be reduced, and the comprehensive performance of the battery on safety performance and electrical performance is improved.

According to the dispersing agent for the positive electrode slurry, the positive electrode slurry, the positive plate and the electrochemical device, the dispersing agent comprises a solvation chain segment, the solvation chain segment is a hyperbranched polymer, and a terminal unit of the hyperbranched polymer is an electronegative group. According to the dispersing agent for the positive electrode slurry, provided by the invention, the hyperbranched polymer with an electronegative terminal group is used as a solvation chain segment, and a high-density terminal functional group is provided through a hyperbranched structure, so that the anchoring capability and the space stabilization effect on a positive electrode active material are remarkably enhanced; meanwhile, by utilizing the electrostatic repulsion effect of electronegative groups and the surface of the positive electrode material, the dispersion stability of the slurry is effectively improved, and sedimentation and agglomeration are inhibited.

A hyperbranched polymer and a preparation method therefor and the use thereof. The hyperbranched polymer comprises a structural formula of formula 1, wherein R is selected from a substituted or unsubstituted C12-C18 alkyl. The hyperbranched polymer, which is used as a demulsifier for demulsifying crude oil emulsions, exhibits a high demulsification efficiency, a low usage amount, a low demulsification temperature, a high acid and alkali resistance, and a high salt resistance. The demulsifier has a high demulsification performance in oil-water emulsions with various properties.

The invention discloses an epoxy resin adhesive and a preparation method thereof, and belongs to the technical field of material preparation. The adhesive is composed of 50-100 parts of an epoxy resin main agent and 50-120 parts of a curing agent; the epoxy resin main agent is functionalized carbon nanotube modified liquid epoxy resin, and the functionalized carbon nanotube modified liquid epoxy resin is composed of 100 parts of bisphenol epoxy resin, 5-25 parts of diglycidyl ether and 5-15 parts of glycidyl methacrylate; the curing agent is prepared from 60 to 100 parts of modified polyamine curing agent, 10 to 25 parts of hyperbranched polymer modifier, 5 to 15 parts of nano silicon dioxide dispersion, 10 to 20 parts of amino-terminated liquid nitrile rubber and 3 to 10 parts of curing accelerator. According to the invention, a high-temperature curing and normal-temperature curing combined technology is adopted to realize that the epoxy resin adhesive forms strength in a short time at normal temperature and does not adhere to the wheel, and secondary curing can be carried out at high temperature, so that interlayer bonding is enhanced. The preparation process is simple, and the prepared epoxy resin adhesive is excellent in tensile property and bonding property.

The invention discloses a robot simulation skin and a preparation method of the robot simulation skin. The formula of the robot simulation skin is composed of 100 parts of an organosilicon polymer with a main chain containing double bonds, 30-45 parts of a hyperbranched phenyl silicone oil plasticizer, 5-18 parts of a nanoscale texture conditioning agent, 7-22 parts of a dynamic crosslinking system and 1.5-9 parts of a function response additive. Through cross-scale cooperation of an organosilicon polymer matrix and functional components, a conformational entropy buffer network of a hyperbranched plasticizer is constructed on a molecular level, a light-force energy flow channel decoupling mechanism of a core-shell regulator is formed on a mesoscopic level, space-time regulation and control of gradient crosslinking and photo-thermal response are realized on a macroscopic level, and meanwhile, the cross-scale cross-linked hyperbranched polymer has good application prospects. The physical essence of inherent contradictions of'high-temperature softening-low-temperature embrittlement 'and'light transmittance-elasticity mutual exclusion' of existing silica gel skin is broken through, and the sensitivity of conformation entropy change to temperature is reduced through the molecular topology confinement effect.

The invention belongs to the technical field of modified plastics, and particularly relates to a high-reflection low-transmittance polypropylene composite material as well as a preparation method and application thereof. The invention provides a novel polypropylene composite material formula, which comprises homo-polypropylene, precipitated barium sulphate, hollow glass beads, maleic anhydride grafted polypropylene and a hyperbranched polymer dispersant, through selection and synergistic effect of the specific components, the reflectivity of the obtained polypropylene composite material is significantly improved, the light transmittance is greatly reduced, and the polypropylene composite material has a good application prospect. Good mechanical properties and high-whiteness surface appearance are kept, and the high-whiteness optical fiber can be widely applied to the field of various optical products.

The invention relates to the technical field of epoxy resin preparation, and particularly discloses a modified epoxy resin packaging material and a preparation method thereof.The modified epoxy resin packaging material is prepared from, by weight, 96-130 parts of resin matrix, 14-16 parts of heat conduction filler, 9-12 parts of composite flame retardant, 4.6-5.6 parts of curing accelerator, 1.2-1.4 parts of photoinitiator and 440-500 parts of solvent; the hydroxyl-terminated hyperbranched polymer and the heat-conducting filler are added into the modified epoxy resin packaging material, and the polymer contains rich active hydroxyl, benzene rings,-Si-O-Si bonds and sulfydryl, not only can be subjected to a curing reaction with bisphenol A epoxy resin, but also can be subjected to a reaction with the heat-conducting filler, so that the heat-conducting property of the heat-conducting filler is improved; the overall crosslinking density of the modified epoxy resin packaging material is improved, the dispersity of the heat-conducting filler is improved, the heat conductivity is improved, and meanwhile the ablation resistance and the mechanical property of the modified epoxy resin packaging material are improved.

The invention discloses a solvent-free adhesive for an electron beam curing flexible package and a preparation method thereof, and belongs to the technical field of adhesives, the adhesive comprises the following raw materials by weight: 60-80 parts of urethane acrylate, 10-15 parts of a crosslinking component, 20-40 parts of a diluent, and 5-10 parts of an auxiliary agent; the cross-linking component is a hydroxyl-terminated hyperbranched polymer which is prepared from 3-(methacryloyloxy) propyl trimethoxy silane and dihydroxyl quaternary ammonium salt. The solvent-free adhesive for the electron beam curing flexible package, provided by the invention, has the advantages that the solvent-free property is good; the electron beam curing solvent-free adhesive is low in viscosity, odorless, free of voc emission, capable of being rapidly cured, environmentally friendly, safe and convenient to use, high in curing degree, long in storage time, high in curing speed and capable of being widely applied to flexible package composite films in the fields of food, medicine and the like, and macromolecules are subjected to cross-linking curing according to the electron beam curing principle.

The invention discloses a preparation and application method of a super-lubricating coating based on a two-dimensional material. According to the invention, the charge density wave dynamic regulation and control mechanism of the fluorinated graphene and transition metal chalcogenide heterostructure is combined with the stress buffer characteristic of boron nitride, so that a slip interface with a low shear barrier is constructed on the atomic scale, and the energy dissipation in the friction process is remarkably reduced. A three-dimensional interpenetrating network of the helical carbon nanotubes and the hyperbranched polymer not only effectively inhibits stacking of two-dimensional materials, but also forms a multi-dimensional damage repair mechanism through solid-liquid phase change self-adaptive filling of the liquid metal and a boundary lubrication effect of the nano-diamond. Through the synergistic effect of the material system, the coating keeps the ultralow friction characteristic under the wide-range working condition, meanwhile, the coating has the composite protection capacity of abrasion resistance, high temperature resistance and corrosion resistance, and the intrinsic lubrication characteristic of the two-dimensional material is reserved while the compactness of the coating is guaranteed through the gradient cross-linking technology of ultraviolet curing and heat treatment.

The invention relates to the technical field of packaging materials, and discloses a preparation method of an antibacterial and antiseptic food packaging material, and the antibacterial and antiseptic food packaging material comprises 100 parts by weight of polyvinyl alcohol, 2-15 parts by weight of cross-linked beta-cyclodextrin included thyme oil, and 1-1.5 parts by weight of glycerol. The hyperbranched polymer cross-linked beta-cyclodextrin contains a three-dimensional hyperbranched dendritic molecular chain and has a higher inclusion amount for thyme oil, so that more active antibacterial components such as thymol and carvacrol are included, and the antibacterial and anticorrosive properties of the packaging material are remarkably improved after the hyperbranched polymer cross-linked beta-cyclodextrin is added into the polyvinyl alcohol film packaging material. The hyperbranched polymer cross-linked beta-cyclodextrin contains a flexible polyether hyperbranched molecular chain, has a certain toughening effect on polyvinyl alcohol, and is beneficial to improving the elongation at break and toughness of the polyvinyl alcohol film packaging material.

The invention provides an ultralow-temperature-resistant fiber-reinforced resin-based composite material and a preparation method thereof, and belongs to the technical field of composite materials. Firstly, alpha, beta unsaturated ketene and diamine are synthesized into a hyperbranched polymer through a one-pot method, a hyperbranched polymer solution serves as a sizing agent to conduct surface treatment on fibers, and then the fibers and ultralow-temperature-resistant thermosetting resin are compounded and cured to obtain the ultralow-temperature-resistant fiber-reinforced resin-based composite material. The hyperbranched polymer with a dendritic three-dimensional space structure is used as an interface phase, has abundant amido bonds, is terminated by primary amine, not only forms intramolecular and intermolecular multiple hydrogen-bond interaction, but also can be chemically reacted with resin to construct a covalent bond-hydrogen bond hybrid cross-linked network, so that the cross-linked network structure is improved; the interface of the fiber reinforced composite material is reinforced and toughened under ultralow temperature and room / ultralow temperature circulation, and the fiber reinforced composite material can be applied to ultralow temperature scenes such as liquid hydrogen storage tanks, conveying pipes, deep space exploration component materials, polar region scientific investigation and icebreaking equipment and the like.

The invention discloses a preparation method of a pigment for low-oil-absorption pigment red 57: 1 printing ink, and belongs to the technical field of pigment synthesis. 4-aminotoluene-3-sulfonic acid is diazotized and then coupled with 3-hydroxy-2-naphthoic acid, a carboxyl-terminated hyperbranched polymer and an ionic liquid are added into a pigment crude product compound obtained after the coupling reaction is completed, and the pigment for low-oil-absorption pigment red 57: 1 printing ink is obtained. And finally adding a calcium chloride aqueous solution for color lake. The pigment for low-oil-absorption pigment red 57: 1 printing ink, prepared by the invention, not only has lower oil absorption, but also has the advantages of strong tinting strength, easiness in dispersion and high stability, and has good processing and application performance.

The invention provides a nylon composite material as well as a preparation method and application thereof, and belongs to the technical field of nylon composite materials. The nylon composite material comprises the following raw materials in parts by mass: 35-75.5 parts of nylon resin; 20 to 40 parts of glass fiber; 2-15 parts of a wear-resistant agent; 1 to 5 parts of silicone; 1-5 parts of a compatilizer; 0.5 to 1 part of an antioxidant; 0.5 to 1.5 parts of a lubricant; 0.5 to 1.5 parts of a coloring agent; the wear-resistant agent comprises more than one of ultra-high molecular weight polyethylene, a hyperbranched polymer, polytetrafluoroethylene and silicone oil. The nylon composite material is prepared by compounding the nylon resin, the glass fiber, the wear-resistant agent, the silicone, the compatilizer, the antioxidant, the lubricant and the coloring agent, so that the wear resistance and the melt strength of the nylon composite material are remarkably improved, meanwhile, the nylon composite material has excellent machinability and mechanical properties, the machinability and the dimensional precision of wear-resistant products can be improved, the service life of the wear-resistant products can be prolonged, and the processing efficiency can be improved.

The present invention discloses an ultra-high barrier homogeneous composite packaging film and its preparation process, belonging to the technical field of packaging materials. The ultra-high barrier homogeneous composite packaging film of the present invention includes a substrate layer, an ink layer, a barrier layer, and a heat-sealing layer. The substrate layer is a BOPP film, the ink layer is a water-based ink, the barrier layer is a VMBOPP film, and the heat-sealing layer is a PE composite film. The BOPP film is composed of the following raw materials in parts by mass: 60-70 parts of polypropylene, 15-22 parts of hyperbranched polymer-modified POE, 10-18 parts of ethylene-vinyl acetate copolymer, 0.1-0.5 parts of a nucleating agent, and 0.1-0.4 parts of an antioxidant. The preparation process of the ultra-high barrier homogeneous composite packaging film of the present invention is simple, the structural barrier property is stable, it has ultra-high oxygen barrier property and water vapor barrier property, excellent mechanical strength, toughness, and resistance to high and low temperatures, and the heat-sealing process is easy to control, and the flatness of the sealed edge after packaging is improved. Using a single polyolefin material, the raw materials are environmentally friendly, and the barrier performance equivalent to that of aluminum foil can be obtained, reducing the cost.

The invention relates to the field of polymer composite materials and functional films, and provides a cast film for a lithium ion battery, which is characterized in that the cast film is of a laminated composite structure, and the laminated composite structure comprises a support layer and an interface functional layer; the supporting layer comprises polymer fibers and boron nitride nanosheets which are dispersed in a three-dimensional network of the polymer fibers in a highly oriented manner; wherein the included angle between the plane normal direction of the boron nitride nanosheet and the thickness direction of the cast film is less than 30 degrees; the interface functional layer comprises a hyperbranched polymer matrix and LLZO nanowires which are distributed in the hyperbranched polymer matrix in a gradient manner; the surface, deviating from the supporting layer, of the interface functional layer is grafted with a zwitterionic polymer brush through chemical bonding; wherein the surface density of the LLZO nanowire is gradually reduced from the surface, grafted with the zwitterionic polymer brush, of the interface functional layer to the direction of an interface combined with the supporting layer; the cast film has good electrochemical performance, interface stability and safety performance.

This invention provides a high weather-resistant three-color paint and its preparation method. The high weather-resistant three-color paint includes a white primer, a red primer, a blue primer, a topcoat, a clear coat, and a curing agent. Modified silica is added to the white primer, red primer, blue primer, topcoat, and clear coat. The modified silica is obtained by copolymerizing hydroxyl hyperbranched polymer-coated nano-silica, 2,4-dihydroxybenzophenone-grafted cyanuric chloride, and hydroxyl acrylate. This modified silica possesses a three-dimensional cross-linked network structure, which directly enhances the mechanical properties of the paint film. It also incorporates abundant ultraviolet absorbing groups, significantly improving the weather resistance of the paint film. Simultaneously, the large number of active hydroxyl groups it contains enhances the adhesion of the paint film. During the curing process, the isocyanate groups of the curing agent combine with the hydroxyl-containing components in the system to form a highly integrated and dense paint film structure, further improving the mechanical properties, weather resistance, and optimizing acid and alkali resistance of the paint film.

The invention discloses a preparation method and application of hyperbranched polymer toughened epoxy resin and a secondary recycling method of the epoxy resin, and relates to the technical field of epoxy resin. The invention aims to solve the problems that the traditional thermosetting epoxy resin is difficult to recover and the toughness of the recovered thermosetting epoxy resin does not reach the standard. The method comprises the following steps: mixing the epoxy resin degradation product, the bisphenol A epoxy resin, the anhydride curing agent and the hyperbranched siloxane polymer, and stirring for 30-45 minutes at the temperature of 80-100 DEG C; adding a tertiary amine accelerant, uniformly mixing, and injecting into a mold; the mold is placed in a vacuum environment at the temperature of 60-80 DEG C for defoaming, curing is conducted for 1.8-2 h at the temperature of 120-130 DEG C, then the temperature is increased to 150-160 DEG C, and curing continues to be conducted for 1.8-2 h. The invention can obtain the preparation method and the application of the hyperbranched polymer toughened epoxy resin and the secondary recycling method of the epoxy resin.

The invention discloses a transition metal ion chelated polymer electrolyte, a preparation method and an electrochemical device. The polymer electrolyte is a mixture of a styrene-maleic anhydride grafted hyperbranched polymer and an alkali metal salt of a functional compound, and the styrene-maleic anhydride grafted hyperbranched polymer is prepared on the basis of a polyamine branched polymer and a styrene-maleic anhydride copolymer. The functional compound is a polydentate ligand containing a carboxylic acid group and a nitrogen-containing aromatic heterocyclic structure unit or an arylamine structure unit, and the alkali metal salt is a lithium salt or a sodium salt. According to the invention, the functional compound containing the carboxylic acid group and the nitrogen-containing aromatic heterocyclic ring or arylamine is used as a carrier of the alkali metal ions and a scavenger of the transition metal ions at the same time, so that the cross pollution source of the transition metal ions is eliminated; meanwhile, the ionic conductivity and safety of the electrochemical device are improved by utilizing the coordination of a three-dimensional network of the polymer and a molecular trap of the functional compound, and the dendritic crystal strength is inhibited, so that the interface stability of the electrode is improved.