491 results about "Molecular materials" patented technology

The invention discloses a high-CTI (comparative tracking index) halogen-free flame-retardant PA66 (polyamide 66) composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The composite material comprises the following components in parts by weight: 52-64 parts of PA66 resin, 20-30 parts of glass fibers, 12-15 parts of a phosphorus-based flame retardant, 0.5-1.5 parts of a flame-retardant synergist, 0.3-0.7 part of a lubricant and 0.1-0.5 part of an antioxidant, and the flame-retardant synergist is aliphatic dicarboxylic acid with the carbon atom number greater than or equal to 8. The material surface energy is reduced and electrolyte is repelled through long-carbon-chain hydrophobic groups, and meanwhile, the CTI value is increased to 600 V or above while it is guaranteed that the material reaches the UL94 V0 flame retardant grade (1.6 mm) by utilizing interaction of carboxyl and a PA66 matrix and cooperating with a phosphorus flame retardant. The invention also provides a preparation method of the material, the process is simple, the material is suitable for industrial production, and the product can be widely applied to electronic and electrical components with high safety requirements.

The invention discloses an AI-driven polymer composite material process optimization method, and aims to solve the problems of data islands, process optimization lag and insufficient model timeliness in a polymer material production process. The method comprises the following steps: collecting full-link data according to a six-level customer product coding specification; the state parameters of the high-frequency equipment are safely stored in the sub-table 1 through encryption and identity authentication; constructing a structured database based on the production batch number association main table, the raw material sub-table set, the sub-table 2 and the sub-table 3; training a multi-model artificial intelligence system fusing gradient boosting regression, Bayesian optimization, a neural network and a random forest, and realizing a bidirectional linkage closed loop of formula recommendation, process optimization and performance prediction; and incremental learning is carried out by adopting a sliding window mechanism in combination with an online gradient descent and elastic weight consolidation strategy. According to the technical scheme, intelligent, efficient and safe optimization of the high polymer material process can be achieved, and the product quality and the production efficiency are remarkably improved.

The invention provides a high-strength corrosion-resistant CPVC plate and a preparation method thereof, and belongs to the technical field of high polymer materials, the preparation method comprises the following steps: S1, preparing Si-MBS; s2, mixing CPVC resin powder, Si-MBS, chlorinated polyethylene, a stabilizer, a processing aid, a lubricant and a coupling agent-hollow microsphere, melting, plasticizing, extruding, calendaring to form a plate, and cooling and shaping to obtain a CPVC base material; and S3, spraying the coating slurry containing ZIF-67 / GO-coated BTA / PEI powder on the surface of the CPVC base material, vacuumizing, and curing to obtain the high-strength corrosion-resistant CPVC plate. The overall strength and impact resistance can be improved, and meanwhile the overall corrosion resistance is improved.

The present application relates to the technical field of high polymer material design, and particularly relates to a high polymer material formula design optimization method and system.The method comprises: performing formula iteration according to multiple preliminary experimental data to obtain a target material formula; wherein the i-th iteration in the formula iteration comprises: according to multiple real data of the i-th iteration, performing prediction on multiple preset material formulas of the i-th iteration respectively to obtain multiple virtual data of the i-th iteration; and then performing model training to obtain a prediction model of the i-th iteration; and then determining a candidate material formula of the i-th iteration, and analyzing the difference between the real performance and the model prediction performance of the candidate material formula of the i-th iteration, and terminating the iteration when the difference is less than a preset deviation threshold.The present application can reduce the number of real experiments on material formulas under the premise of ensuring the search accuracy of the material formulas, and reduce the search cost of the optimal formula of the high polymer material.

The application discloses a kind of polymer material 3D printing additive and subtractive integrated machine and its control method, including rack body, movement module, milling cutter module, material spraying module, camera module, rack body is the frame structure of near body face opening, movement module is set in the middle frame of rack body;Movement module includes X-axis movement component, Y-axis movement component, Z-axis movement component, and the model of 3D printing forming is formed on the bearing platform by material spraying module;The cutter is provided below the milling cutter module by R-axis connecting seat, and the printed model is polished by the rotation of cutter.The control method provided by the application corrects the model sprayed by milling cutter module to material spraying module, and adopts the way of layer-by-layer spraying and layer-by-layer correction, which greatly improves the precision of spraying forming.

The invention discloses a polyarylene ether nitrile nanofiber membrane and a preparation method of the polyarylene ether nitrile nanofiber membrane through double-solvent synergistic electrostatic spinning, and relates to the field of high polymer material preparation. The method comprises the following steps: preparing two electrostatic spinning solutions with obvious volatilization rate and dissolution parameter difference, and alternately depositing two types of fibers on a collecting surface by adopting dual-channel synergistic electrostatic spinning; in the deposition and drying process, chain segments at fiber cross points are induced to swell, mutually diffuse and cure in situ to form bonding points by utilizing the poor evaporation rate of a high / low volatile solvent and the poor solvent-polymer compatibility, so that the self-densification and the structure stabilization of the nanofiber membrane are realized. The obtained nanofiber membrane has high-density in-situ bonding points and remarkably improved mechanical properties, does not need additional post-treatment such as hot pressing or solvent spraying, and is suitable for application such as interlayer reinforcement and interface toughening of composite materials. The process has continuity and controllability, and the density and mechanical properties of the membrane body can be customized by adjusting a solvent system and spinning parameters.

The invention relates to the technical field of high polymer material and automobile part manufacturing, and discloses a high-durability high-low temperature resistant automobile composite sealing strip, which is prepared from the following raw materials: ethylene propylene diene monomer, polyisoprene grafted maleic anhydride, pre-dispersed master batch, carbon black and a vulcanization system. The pre-dispersed master batch takes oxidized polyethlene wax as a carrier to wrap zinc oxide and D-mannitol. The phase change characteristic of the carrier is utilized, active components are isolated in the mixing and extruding stage, and scorching is prevented; the components are released in the high-temperature vulcanization stage to initiate anhydride ring opening, and a double cross-linked network with coexistence of covalent bonds and ionic bonds is constructed. According to the sealing strip, the macromolecular reactive plasticizer is used for replacing part of liquid paraffin, the atomization problem caused by micromolecule migration is solved, the high-temperature compression permanent deformation rate is remarkably reduced through a thermal reversible mechanism of an ion cluster, and excellent low-temperature rebound resilience and processing safety are both considered.

The invention provides a high-thermal-conductivity flexible epoxy composite material as well as a preparation method and application thereof, and belongs to the field of high polymer materials. The composite material disclosed by the invention is prepared by adding polydopamine modified BN and FG which are jointly used as fillers into an epoxy matrix and adopting polyether amine as a curing agent. The polydopamine modified BN and the FG are jointly used, so that a synergistic interaction effect can be achieved in the aspects of heat-conducting property, dielectric property and mechanical strength. The epoxy composite material disclosed by the invention can obtain excellent heat-conducting property, dielectric property and insulating property under the compatibility of specific raw materials. And when the curing agent with a long molecular chain is adopted, the epoxy composite material can obtain excellent flexibility, and the problem of brittleness of the existing epoxy composite material is solved. A research basis is provided for preparation and performance research of the flexible epoxy composite material, and the flexible epoxy composite material has a good application prospect.

This invention discloses an MPP pipe for power cables and its preparation method, relating to the field of polymer materials technology. The invention comprises, by weight, 80-90 parts of a toughening nucleating agent; 40-45 parts of an insulating nucleating agent obtained by in-situ composite and gradient temperature imidization treatment of a polyamic acid prepolymer prepared from hexagonal boron nitride nanosheets (prepared by surface modification with dopamine hydrochloride, followed by modification with octyltriethoxysilane) to obtain a silanized boron nitride suspension; 40-45 parts of melamine cyanurate; 2.1-2.4 parts of an antioxidant; 2.6-3 parts of a light stabilizer; 8-9 parts of a lubricant; and 1340-1500 parts of polypropylene. The introduction of the toughening nucleating agent and insulating nucleating agent in this invention effectively improves the flame retardancy, low-temperature rigidity-toughness balance, and aging resistance of the MPP pipe.

The utility model relates to the technical field of high polymer material forming processing, and discloses a foam microcellular foaming forming device based on supercritical fluid, which comprises a mixing box, a discharge valve, a placing cylinder, an L-shaped frame and a driver, an adjusting mechanism is arranged on the mixing box, an auxiliary mechanism is arranged on the adjusting mechanism, the adjusting mechanism comprises a rotary column, and the rotary column is arranged on the placing cylinder. A sliding plate is fixedly connected to the rotating column, a concave-convex opening is formed in the outer wall of the top of the containing barrel, a telescopic spring is fixedly connected to the outer wall of the bottom of the containing barrel, a compression spring is fixedly connected to the inner wall of the bottom of the sliding plate, and a scraping plate is slidably connected to the inner wall of the bottom of the sliding plate; the outer wall of the side, close to the compression spring, of the scraper is fixedly connected with a stirring rod. According to the utility model, the sliding plate and other structures are arranged, so that the problem that the quality of a final product is influenced due to the fact that a molten raw material and a mixture are not fully and uniformly stirred when supercritical fluid is mixed in a special plasticizing device is solved.

The utility model belongs to the field of high polymer material heating and tabletting, in particular relates to a high polymer material heating and tabletting device, and aims to solve the problems that in the prior art, high polymer materials are placed in a forming groove to be heated and then are tabletted, however, the flaky molecular materials are left in the forming groove after being tabletted, and the working efficiency is high. According to the technical scheme, the sheet-shaped molecular material forming machine comprises a machine table, a support is welded to the top of the machine table, a driving part is fixedly arranged at the top of the support, a telescopic part of the driving part penetrates through the top of the support and is fixedly provided with a lower pressing box, and a forming box is arranged under the lower pressing box; the diameter of the lower pressing box is the same as the inner diameter of the forming box, the forming box can be turned over through the rotating mechanism after tablet pressing is completed, tablets can be poured out conveniently, the tablet taking time is greatly shortened, the production efficiency is improved, high polymer materials in the forming box can be cooled through the cooling mechanism, and a worker can hold the forming box conveniently.

The application relates to the technical field of computer-aided design of high polymer materials, and discloses a polyimide molecular structure generation method and device based on monomer combination, which comprises the following steps: constructing a synthesizable monomer database; constructing a molecular performance prediction model; generating a target polyimide structure based on Monte Carlo tree search; and outputting a candidate scheme. The device corresponds to the method. According to the application, the chemical search space is controlled within a reasonable and operable range by limiting the basic construction monomer; the actual synthesizability of the generated structure is guaranteed from the source by combining the commercially available or known synthesizable monomers; and the intelligent algorithm is used to systematically explore the monomer combination space, so that the discovery efficiency of novel high-performance polyimide materials is significantly improved.

The invention relates to the field of high polymer material forming and processing, and discloses an automobile polylactic acid composite material interior trim production device which comprises a lower mold assembly, a supporting assembly, a traction assembly and an upper mold. The lower die assembly is slidably connected to the supporting assembly, and the traction assembly is arranged below the lower die assembly. The traction assembly drives a lower section mold in the lower mold assembly to do horizontal reciprocating motion through a driving motor and a transmission mechanism; and the transmission mechanism synchronously drives the sliding plate and the convex teeth in the lower section mold to vertically lift in a reciprocating manner. Through phase matching of the cam and the cam shaft, the convex teeth stretch out and pierce the material only when the lower section die moves in the stretching direction and retract in the return stroke, and intermittent one-way shearing of the bottom end of the material is achieved. The device further has a variable-speed variable-pitch adjusting function, and the shearing stroke and speed can be switched according to the material forming stage. According to the invention, molecular chain orientation can be effectively induced, and the crystallization rate of the polylactic acid material and the mechanical strength of the interior trim part are improved.

This invention discloses a composite transparent film and its preparation method, relating to the technical field of polymer materials. The preparation method of the composite transparent film includes the following steps: (1) melting and blending vermiculite and fluororubber to obtain fluorinated vermiculite; then mixing the fluorinated vermiculite and mica evenly to obtain composite clay; (2) mixing polyvinyl alcohol solution, composite clay, and SESC lignin evenly to obtain a precursor solution, wherein the mass ratio of polyvinyl alcohol, composite clay, and SESC lignin is 45:45:(8-12); then spreading and drying the precursor solution on a substrate by casting, followed by heat treatment to obtain the composite transparent film. The composite transparent film of this invention possesses excellent water vapor barrier properties, ultraviolet absorption capacity, good transparency, high mechanical strength, and weather resistance.

The application relates to the technical field of heat preservation air pipe, in particular to a high-molecular film-coated rubber and plastic heat preservation air pipe, which comprises a plate body, the plate body is quadrangular, the plate body is made of flexible rubber material, one side of the plate body is fixedly provided with a waterproof layer made of composite fluorocarbon fiber material, one side of the plate body opposite to the waterproof layer is provided with a wear-resistant layer formed by spraying high-molecular material, one side of the wear-resistant layer of the plate body is provided with a first zipper part and a second zipper part matched with each other, and a zipper head is slidably arranged on the first zipper part. The waterproof layer made of composite fluorocarbon fiber material and the wear-resistant layer formed by spraying high-molecular material are arranged, the waterproof and wear resistance of the heat preservation air pipe are improved, the problem that the heat preservation air pipe is prone to damage during installation and transportation is avoided, and the production and installation cost is saved. Meanwhile, the heat preservation air pipe can also have excellent elasticity and tensile strength.

The invention discloses a carbon fiber polyester composite felt and a preparation method thereof, and relates to the technical field of high polymer materials, and the preparation method comprises the following steps: (1) carbon fiber directional activation; (2) in-situ grafting of sheath-core monofilaments; (3) dual-network synchronous lapping; and (4) node in-situ thermal consolidation. According to the preparation method disclosed by the invention, a carbon fiber polyester composite felt preparation system without an additional binder is constructed by sequentially implementing four steps of processes of carbon fiber directional activation, skin-core monofilament in-situ grafting, dual-network synchronous lapping and node in-situ thermal consolidation, and molecular-level synergistic combination of carbon fibers and polyester components is realized. The interface bonding strength and structural integrity of the composite felt can be remarkably improved, and meanwhile, the mechanical bearing stability of the composite felt is improved, so that the problems that in the prior art, carbon fibers and a polyester matrix are poor in interface compatibility, layering and falling are prone to occurring, and the service life is short can be solved. And the problems that the mechanical property of the composite felt is reduced, the preparation process is complicated and the environmental protection property is insufficient due to the need of adding an external binder are solved.

The invention discloses a functionalized polycarbonate material and a preparation method thereof, and belongs to the field of high polymer materials. The material takes carbon dioxide as a green monomer, double-bond active sites are pre-buried in a polycarbonate main chain through ring-opening copolymerization, and carboxyl, amino or heterocyclic functional side chains are efficiently grafted through thiol-ene click reaction. The preparation method comprises the following steps: under the action of a composite catalyst, copolymerizing a double-bond-containing monomer, propylene oxide and COO to synthesize a precursor; and driving the sulfydryl monomer to carry out click reaction through thermal or photo-initiation. The innovation point lies in that the limitation of traditional protection / deprotection is broken through, multiple functions are integrated, hydrophilic carboxyl, antibacterial amino and conductive thiophene group have a synergistic effect, meanwhile, high mechanical strength and controllable degradability are kept, and the preparation method is suitable for the fields of biomedicine and electronics.

The invention discloses a high-viscosity-stability water adhesive for a polaroid and a preparation method of the water adhesive, and belongs to the technical field of high polymer materials and adhesives. The water gel for the polaroid is prepared from 2 to 8 parts of acetoacetyl modified PVA (Polyvinyl Alcohol), 0.01 to 0.2 part of bifunctional crosslinking agent, 0.01 to 0.1 part of coordination metal ion salt and 100 parts of deionized water. PVA is completely dissolved, and a Lewis base catalyst and a controllable dropwise adding process are matched, so that efficient and uniform grafting and high conversion rate of acetoacetyl are realized. The modified PVA has a synergistic effect with a cross-linking agent and a metal ion salt to form a stable dual cross-linked network, and after a damp-heat aging test, the weather-resistant polyvinyl alcohol adhesive still shows excellent weather resistance, and has excellent initial bonding strength and continuous and uniform film-forming characteristics at the same time. The method has the advantages of being environmentally friendly, stable in production process and the like, and is particularly suitable for preparing the polaroid of the high-end display device.

The invention discloses an interface molecularly imprinted polymer microsphere as well as a preparation method and application thereof, and relates to the technical field of functional polymer materials. The preparation method comprises the following steps: firstly, enabling template molecules to react with a silane coupling agent to form a template molecule compound; and then anchoring the template molecule compound on the surface of SiO2 particles, so that the template molecule compound simultaneously plays the dual roles of a stabilizer and an imprinting template in Pickering emulsion polymerization. And after the polymerization is completed, removing the template molecule modified SiO2 particles to obtain the polymer microspheres of which the imprinting sites are completely exposed on the surfaces of the microspheres. Molecular imprinting sites of the microspheres are uniformly distributed on the surface and are in an open and highly accessible state, so that the recognition rate and the binding capacity of target molecules are remarkably improved, and the microspheres have excellent selective enrichment and separation performance on target analytes; a reliable technical path is provided for practical application of the molecularly imprinted material in the fields of solid-phase extraction, sensing detection, medicine purification and the like.

The invention discloses a color-changeable TPU (thermoplastic polyurethane) film as well as a preparation method and application thereof, and belongs to the technical field of intelligent high polymer materials. The TPU film comprises a thermoplastic polyurethane (TPU) matrix, a color change response system, an interface stabilizer and a functional additive. The color-changing response system comprises at least two different types of color-changing materials, so that multiple environmental stimulus response color changing, such as temperature and light dual response, is realized. The film has the characteristics of sensitive color change response, high color contrast, good color change reversibility, excellent fatigue resistance, high mechanical property retention rate and the like. Through formula and process optimization, the technical problems that a single color-changing material is insensitive in response, low in color-changing contrast ratio, poor in durability and poor in compatibility with a TPU matrix are solved. The TPU film prepared by the invention can be widely applied to the fields of intelligent wearing, safety anti-counterfeiting, dynamic decoration, sensor indication and the like.

The application discloses a kind of polyurethane composite material embedded liquid repair network and preparation method thereof, belong to high polymer material technical field, it is by polyurethane prepolymer 40-60 parts, repair agent carrier particle 5-20 parts, liquid repair agent 10-30 parts and dispersing agent 0.1-1 parts composition.The material of the application solves the problem that polyurethane material is easily damaged in long-term use, and the repair efficiency is low.The composite material material of the application has fast, efficient and self-adapting repair performance under large-scale damage and multiple damage, and is suitable for complex environment such as acid and alkali, high temperature, has important application prospect in various industrial equipment, flexible electronic equipment, automobile, building and other fields.

This invention relates to the field of organosilicon polymer materials technology, and discloses a high-insulation, low-volatility organosilicon elastic sealing gasket and its preparation method. The organosilicon elastic sealing gasket is mainly composed of a synergistically modified organosilicon elastomer matrix, combined with small-molecule organic functional additives, insulating reinforcing fillers, structural stabilizing agents, and crosslinking promoters. By synergistically modifying the organosilicon elastomer matrix and introducing specific small-molecule organic functional additives, the migration and volatilization of low-molecular-weight components are effectively suppressed while ensuring the material's elasticity and processing performance, and the electrical insulation performance and long-term stability of the material are significantly improved. The sealing gasket preparation process of this invention is simple, highly applicable, and the resulting product has excellent comprehensive performance, making it suitable for electrical and electronic equipment fields with high requirements for sealing reliability and electrical insulation performance.

The application relates to the technical field of functional materials, in particular to a vinyl-modified magnesium-based flame retardant as well as a preparation method and application thereof, which comprises the following steps: adding water-magnesite into an ethanol solution to stir into a slurry, adding a modification aid, heating to 50-80 DEG C, constant-temperature stirring for 10-20 min, then filtering, drying, and obtaining the vinyl-modified magnesium-based flame retardant; the mass ratio of the water-magnesite to the modification aid is 1:(0.001-0.005). The vinyl-modified magnesium-based flame retardant does not contain halogen, has high-efficiency flame retardation, has good compatibility with high-molecular materials, and can improve the mechanical properties of high-molecular polymer materials when used.

The invention provides a crosslinked polystyrene product and a preparation method thereof, and belongs to the technical field of high polymer material molding.The preparation method comprises the steps that after raw materials are mixed and degassed, prepolymerization is conducted, the density is measured, the casting amount is calculated according to the total volume of the product, the volume fraction (55%-70%) of a center layer, the density and a shrinkage compensation coefficient, and the product is obtained. Carrying out first forming and second forming; according to the preparation method, prepolymerization and step-by-step forming are combined, polymerization heat release is effectively dispersed, and implosion, bubble and crack risks are remarkably reduced, so that the performance consistency of the product is high, a central layer and a peripheral layer are integrally combined on the molecular level through interface swelling and formation of an interpenetrating polymer network, the layering defect is avoided, and the performance uniformity of the product is improved. And through a casting amount calculation model, accurate control over materials is achieved, and the forming repeatability and the size precision are improved.

This invention discloses a 3D printing material with adjustable PBT crystallinity and its preparation method, relating to the field of polymer materials technology. This 3D printing material with adjustable PBT crystallinity utilizes a terpolymer containing epoxy functional groups as a crystallinity regulator, blended with PBT resin in a specific ratio, to achieve precise control over the crystallization behavior of PBT. During melt blending, the epoxy groups on the crystallinity regulator molecular chain can chemically react with the terminal carboxyl or hydroxyl groups of the PBT resin, forming appropriate grafting or crosslinking points. Simultaneously, by controlling the amount of crystallinity regulator added, the crystallinity of the final composite material can be continuously and precisely adjusted within the range of 25% to 40%, thereby fundamentally balancing the warping force caused by crystallization shrinkage with the material's ability to maintain its shape, solving the problems of large crystallization shrinkage, narrow processing window, and poor performance stability in existing technologies.

The invention relates to the technical field of biological materials, and provides an absorbable self-repairing suture line for maintaining the stability of a mechanical biological microenvironment and a preparation method of the absorbable self-repairing suture line. According to the suture line, an absorbable high polymer material is adopted as a matrix, and PLA microcapsules containing a medical-grade cyanoacrylate n-octyl ester repairing agent are uniformly dispersed in the matrix through a melt blending spinning process. When the suture line generates microcracks at dynamic tissue parts such as cardiovascular and digestive tracts due to periodic stress, the stress at the tip of the cracks enables the microcapsules to be broken to release the repairing agent, rapid in-situ polymerization occurs under triggering of tissue fluid, the self-repairing efficiency of 90% or above is achieved, and the strength retention rate of 95% or above is maintained in the key rehabilitation period of the suture line. The defect that a traditional absorbable suture line is prone to fatigue fracture in a dynamic environment is overcome, the mechanical integrity is actively maintained through an intelligent self-repairing mechanism, all components can be completely degraded and absorbed, and a safer and more reliable solution is provided for dynamic tissue repairing.

The application belongs to the technical field of catalytic synthesis, and particularly relates to application of a Lewis acid-base pair in catalyzing polymerization of functionalizable monomers. Common polymerization methods have poor controllability for polymerization of monomers containing polyene groups, alkyne groups and conjugated diene groups, and the molecular weight of the obtained polymer is uncontrollable at low monomer conversion, and the molecular weight distribution is wide, and crosslinking occurs at high monomer conversion. The application utilizes a specific Lewis acid-base pair, and by adjusting the electronic effect and steric hindering effect of the Lewis acid and the Lewis base, active controllable polymerization of the functionalizable monomers can be catalyzed, and a polymer with a clear structure and containing functionalizable sites is obtained, the molecular weight is controllable, the molecular weight distribution is narrow, the end group structure is controllable, the position and density of the functionalizable sites are conveniently adjusted, an efficient platform is provided for post-modification preparation of functional high molecular materials, and functional high molecular materials are prepared by combining click reaction.

This invention discloses a ceramicized flame-retardant PBT composite material containing a bio-based carbon source and its preparation method, belonging to the field of polymer materials technology. The composite material uses PBT resin as a matrix and contains the following components: 5-30 parts of bio-based carbon source, 5-25 parts of phosphorus-based flame retardant, 5-20 parts of ceramicizing agent, and 5-20 parts of flux, or 0.1-2 parts of anti-dripping agent and 0.1-1 parts of antioxidant. Specifically, the bio-based carbon source is esterified cellulose or hyperbranched bio-based polyester. This invention constructs a quaternary synergistic system of bio-based carbon source-phosphorus-based flame retardant-ceramicizing agent-flux, which catalyzes the formation of a robust and dense ceramic protective layer during combustion, endowing the material with excellent flame-retardant properties, achieving a UL-94 V-0 rating and a limiting oxygen index greater than 30%, while maintaining the mechanical properties of the matrix. The process is simple, suitable for industrial production, and can be widely used in fields with high flame-retardant safety requirements, such as electronics, electrical appliances, and automobiles.

The invention discloses a high-performance modified polyurea polymer composite material which comprises a component A and a component B. The mass ratio of the component A to the component B is (21-23): (19-20), the component A comprises an isocyanate compound and a prepolymer of polyether polyol, and the component B comprises an amine chain extender, modified polyether amine, a flame retardant, a moisture-proof agent, an antioxidant and a catalyst. According to the invention, modified polyether amine is added into the component B of the polyurea polymer material, and the modified polyether amine can improve the compactness of a coating, reduce the permeation of a corrosive medium and enhance the adhesive force between the prepared polyurea and a base material; high strength can be provided for the prepared polyurea polymer composite material, so that the corrosion resistance and the salt spray resistance of the polyurea polymer composite material are further improved, and the polyurea can adapt to a highly corrosive environment with extreme acid and alkali.