51 results about "Melamine foam" patented technology

The application discloses a preparation method of three-dimensional hollow carbon spheres. The three-dimensional hollow carbon spheres are prepared by one-step pyrolysis method through the three-dimensional network structure of melamine foam and the compounding of MOFs materials. The method is simple in process, environment-friendly, low in cost and capable of industrial production. The three-dimensional hollow carbon spheres prepared by the method have uniform and good micro-morphology, the carbon spheres are hollow in the inside, each carbon sphere has four branches connected with other carbon spheres, and multiple carbon spheres are connected to form a three-dimensional network structure.

This utility model relates to the field of fire-resistant infill door technology, specifically: a reinforced fireproof infill door, comprising a door body, the door body being composed of an outer protective layer, a first fireproof and heat-insulating layer, a reinforcing support layer, a second fireproof and heat-insulating layer, a buffer and shock-absorbing layer, and an inner protective layer. The outer protective layer is a steel plate with a fireproof coating; the first fireproof and heat-insulating layer is an aerogel composite fireproof felt; the reinforcing support layer is a honeycomb stainless steel skeleton structure; the second fireproof and heat-insulating layer is an expanded perlite fireproof board; the buffer and shock-absorbing layer is melamine foam; and the inner protective layer is a fireproof decorative board. In this utility model, through the synergistic effect of the six layers, the performance of the door body is comprehensively improved from multiple aspects such as fireproofing, heat insulation, structural support, and buffer and shock absorption. It can effectively block the spread of flames and heat for a long time during a fire, ensuring the structural integrity of the door body and buying valuable time for safe evacuation and fire rescue.

The invention discloses a preparation method of an MF (at) NH2 (at) Ag SERS (Surface Enhanced Raman Scattering) sensor for detecting paraquat and diquat, belongs to the field of nano material synthesis and spectral analysis, and solves the problems that a traditional detection method is complicated in process and cannot detect pesticides and free radicals thereof at the same time, and a traditional SERS substrate is poor in enhancement effect and low in stability. The preparation method comprises the following steps: firstly segmenting melamine foam, cleaning and drying, soaking in hydrochloric acid, soaking in a polyethyleneimine aqueous solution to modify amino, drying, soaking in a silver nitrate solution for ultrasonic treatment, adding a sodium borohydride solution under an ice bath, stirring and reducing, and finally cleaning and drying to obtain the sensor. The sensor takes three-dimensional melamine foam as a support, silver nanoparticles are uniformly loaded on the surface of the three-dimensional melamine foam, paraquat, aquacide and free radicals thereof are enriched through electrostatic interaction based on a localized surface plasma resonance principle, and Raman signal enhancement is realized. The detection limit is 10 <-9 > mol / L, the signal stability and repeatability are excellent, the applicability to actual water sample detection is good, the detection of other pesticides can be expanded, and the method is suitable for on-site rapid trace detection.

The invention provides a solar-driven photo-thermal water-power cogeneration system and a preparation method thereof, according to the system, Fe3O4 and an MAX phase material are firstly combined through a unique material design, and then the combined material is coupled with super-hydrophobic SiO2, so that a super-hydrophobic MAX-Fe3O4 coated SiO2 photo-thermal composite material is prepared. The composite material is sprayed on the hot end of a thermoelectric module to efficiently absorb solar energy. And the cold end of the thermoelectric module is respectively connected with the foamy copper radiator and a water delivery channel made of a melamine sponge material. According to the design, on one hand, waste heat transferred to the cold end can be used for seawater evaporation; on the other hand, the temperature of the cold end can be further reduced through water evaporation, a continuous temperature difference is formed between the cold end and the hot end, and finally efficient solar-driven water and electricity cogeneration is achieved. By means of the design, multiple functions are integrated, the energy utilization efficiency is greatly improved, and a brand new thought is provided for research, development and application of a seawater desalination coupling electric energy production system.

The invention discloses a magnetic nanoparticle anchored heterogeneous carbon-based heat-conducting and wave-absorbing integrated material and a preparation method thereof, and belongs to the field of functional composites.The preparation method comprises the steps that melamine foam is acidized, and then acidized MF is soaked into a zinc salt, cobalt salt and 2-methylimidazole methanol solution; the obtained MF (at) ZnCo-ZIF is subjected to high-temperature calcination, and the heterogeneous carbon-based heat conduction and wave absorption integrated material anchored by the Co magnetic nanoparticles is obtained. The Co magnetic nanoparticle anchored heterogeneous carbon-based heat-conducting and wave-absorbing integrated material has the advantages of controllable morphology, high heat conductivity and strong wave-absorbing performance through the synergistic strengthening effect of the high-graphitization heterogeneous carbon material with high heat / conductivity and high dielectric loss and the Co magnetic nanoparticles with high magnetic conductivity and high magnetic loss; actual requirements of different scenes can be met, and a new thought is provided for research and development of a high-performance heat-conducting and wave-absorbing integrated material.

An acoustic blanket absorbs acoustic energy and reduces noise in a launch vehicle. The acoustic blanket may be overlaid on a wall of a payload fairing of the launch vehicle. Materials and construction of the acoustic blanket allow for a relatively thin and light sound barrier. The acoustic blanket may comprise vertically-lapped polyester that is overlaid with a lightweight melamine foam. This combination of materials creates an acoustic impedance mismatch between layers that leads to absorption of acoustic energy across a relatively broad range of frequency bands. The acoustic blanket has a particular heat seal pattern that helps absorb noise while allowing the acoustic blanket to be relatively soft and flexible, which is useful for attaching the acoustic blanket to a curved wall of a fairing or other launch vehicle shapes. The acoustic blanket utilizes micro-perforations on multiple sides to allow for movement of air / venting while maintaining the bulk materials inside.

The invention relates to the technical field of electric energy storage systems, and provides a wind power system cooperative operation method adopting a supercritical airfoil blade structure, which is used for solving the problem that the wind power acceptance capability of a power grid is influenced by blade vibration, and comprises the supercritical airfoil blade structure and a layered cooperative control system; the supercritical airfoil blade structure comprises a blade body composed of a blade root part, a blade body part and a blade tip part, a noise reduction piece is fixedly arranged on the rear edge of the blade body, a splicing groove is formed in the noise reduction piece, the rear edge of the noise reduction piece is in a continuous curve shape or a continuous broken line shape, and a groove is formed in the surface of the noise reduction piece. A melamine foam vibration absorption layer is arranged at the rear edge of the blade body in a clamped mode, and a vibration absorption groove is formed in the bottom of the splicing groove. A V-shaped opening for reducing the wind resistance area is formed in the blade tip part of the blade body; the layered cooperative control system comprises a dynamic power distribution module and an angular frequency error feedback synchronous control module.

The invention discloses a preparation method of a D-mannitol-melamine foam composite solid-solid phase change material. The preparation method comprises the following steps: cutting melamine foam MF into small blocks; placing the melamine foam sample cut into blocks on a porcelain boat in a quartz tube of a tubular resistance furnace, carbonizing in a nitrogen atmosphere, and cooling to room temperature after carbonization is finished; adding the carbonized melamine foam CF block into molten D-mannitol DM, and carrying out vacuum impregnation in a vacuum drying oven; and taking out the impregnated sample, heating the sample on a heating plate, and removing redundant mannitol on the surface to obtain the D-mannitol-melamine foam. The prepared DM / CF composite material has excellent shape stability, leakage, loss or form out-of-control of the phase change material in the phase change process can be avoided, the safety and reliability of the material are guaranteed, and potential application prospects are provided for the fields of solar energy utilization, industrial waste heat recovery and the like.

This invention discloses a reconfigurable absorbing metasurface based on heterogeneous absorbing units using a tenon-and-mortise interlocking structure, and its configuration method, belonging to the field of electromagnetic wave absorption and metasurface structure technology. The metasurface is formed by assembling multiple lightweight absorbing units through a tenon-and-mortise interlocking structure. The absorbing units use melamine foam, PMI foam, polyurethane foam, or aerogel porous framework materials as the matrix, and are loaded with absorbing components such as graphene, carbon nanotubes, MXene, ferrite particles, carbonyl iron particles, or conductive polymers. The tenon-and-mortise connection structure has multiple levels of insertion positions and limiting structures, allowing adjacent units to form different insertion states, thereby adjusting the unit spacing, air layer thickness, array period, and equivalent electromagnetic parameters, achieving reconfigurable control of the absorption frequency band and response characteristics. Furthermore, heterogeneous absorbing units with different geometries and absorption parameters can be optimized through parametric design and electromagnetic simulation to form planar or curved broadband absorbing structures. This invention combines the advantages of lightweight, modularity, detachability, surface adaptability, and wideband absorption, and can be applied to fields such as electromagnetic stealth, radar absorption, electromagnetic protection, and complex curved electronic equipment.

The invention discloses a FeNiO / carbon nanotube / carbon foam composite material as well as a preparation method and application thereof, and belongs to the technical field of lithium air battery materials. The melamine foam is placed in a mixed solution composed of nickel salt and iron salt, ultrasonic treatment is carried out for 10-100 min, standing is carried out for 1-12 h, drying is carried out, metal salt attached to the surface layer is removed, and FeNi / melamine foam is obtained; placing FeNi / melamine foam at the downstream of the crucible, placing a carbon source at the upstream of the crucible, and covering the crucible with a crucible cover; under the inert gas atmosphere, heating to 600-900 DEG C at the heating rate of 2-10 DEG C / min, keeping the temperature for 5-240 minutes, and naturally cooling to room temperature; and heating to 300-400 DEG C at a heating rate of 8-10 DEG C / min in an air atmosphere, preserving heat for 5-30 minutes, and cooling to room temperature to obtain the FeNiO / carbon nanotube / carbon foam composite material. According to the prepared FeNiO / carbon nanotube / carbon foam composite material, under the synergistic effect of multiple components, the charge-discharge specific capacity of a battery is greatly improved, and the service life of the battery is obviously prolonged.

The application discloses high-breathability sports shoes, comprising a vamp and a sole, wherein the sole comprises the following components in parts by weight: polyurethane 20-30 parts, polyoxyethylene ether 6-10 parts, butadiene styrene rubber 12-20 parts, modified polyvinylidene fluoride 5-10 parts, modified melamine foam 12-18 parts, zinc oxide 1-3 parts, vinyl trimethoxysilane 1-2 parts, diatomite 8-10 parts, calcium stearate 4-8 parts, vinyl silicone oil 5-8 parts and ethylenediaminetetraacetic acid 10-15 parts. The high-breathability sports shoes and the preparation method thereof improve the breathability of the material, and the material also has better mechanical strength.

This invention belongs to the field of polymer synthesis and application technology, and discloses a method for efficiently preparing melamine foam materials and their applications. This invention introduces unsaturated double bond groups into the melamine resin molecule design and employs a free radical-initiated chemical foaming technique to address the structural performance deficiencies of melamine foam materials, while simultaneously improving the overall material performance, thereby expanding its applications in high-performance adsorbent materials, wall insulation materials, and other fields. The melamine foam material efficiently prepared by the method of this invention has a brittleness mass loss rate of 2.0%, and the properties of the prepared foam material are as follows: apparent density 30-40 kg / m³. 3 The flexural strength is ≥200kPa, the compressive strength is ≥380kPa, and the volumetric water absorption rate is ≤1.0%. The brittle mass loss rate of the foam material of this invention is ≤2.0%, and it can be applied in the fields of wall insulation materials, adsorbent materials, etc.

The present invention pertains to the field of functional materials technology, specifically relating to a preparation method, product, and application of modified melamine foam. The method described in this invention is simple, does not require special equipment or process conditions, and is easy to scale up for industrial production. The melamine foam produced by this method features a high open-cell rate and low density.

The invention relates to a preparation method of a ceramic fiber melamine composite flame-retardant thermal-insulation material and flame-retardant thermal-insulation cotton. The preparation method comprises the following steps: preheating ceramic fiber paper; preparing a binder, and coating one side surface of the ceramic fiber paper with the binder; the melamine foam is attached to the surface of one side of the binder layer, and the ceramic fiber paper layer and the melamine foam layer are attached together through the binder layer to form the composite flame-retardant thermal insulation material; and curing the composite flame-retardant thermal insulation material to complete the preparation. The inorganic glue is adopted as the binder layer to compound the ceramic fiber paper layer and the melamine foam layer, so that the composite flame-retardant thermal insulation material has the effects of low cost, high curing speed and outstanding thermal insulation effect, is simple to prepare, and is low in thickness and wider in application range under the same thermal insulation efficiency.

The invention discloses a preparation method and application of bionic structure temperature adjusting foam, and belongs to the technical field of functional material and phase change energy storage crossing. According to the method, melamine foam serves as a matrix, phenolic resin is used for filling part of pores of foam, polyethylene glycol is adsorbed in vacuum for modification, and the formed temperature-adjusting foam has the characteristics of high enthalpy value and leakage prevention and has the functions of temperature adjustment, photo-thermal conversion, flame retardance and the like. The method is high in operability, simple in equipment, short in process and energy-saving, all component materials can be fully utilized, and waste is avoided; the obtained temperature-adjusting foam does not leak the phase-change material in a general state and can be recycled for multiple times; and the melting enthalpy and the crystallization enthalpy are relatively large, and an excellent temperature adjusting effect can be realized.

This utility model discloses a multi-layer conical cavity composite plywood, which, from top to bottom, consists of a surface layer, a flame-retardant layer, an upper microporous noise-reducing layer, an upper core layer, a middle layer, a lower core layer, a lower microporous noise-reducing layer, a moisture-proof layer, and a bottom layer. The surface layer is made of oak, the flame-retardant layer is made of antimony trioxide modified non-woven fabric, and the moisture-proof layer is made of aluminum foil. The upper and lower microporous noise-reducing layers have noise-reducing micropores, the upper and lower core layers have noise-reducing conical holes, the middle layer is embedded with rectangular melamine foam board, and the surface of the surface layer also has microgrooves. This plywood achieves multiple functions through a multi-layer structure. The various noise-reducing structures work together to reflect, refract, and absorb sounds of different frequencies multiple times, significantly reducing noise; the flame-retardant layer effectively improves fire resistance; and the aluminum foil moisture-proof layer can prevent moisture intrusion and extend service life. Its structural design is reasonable and can meet the needs of various places for flame retardancy, noise reduction, and moisture protection of the plywood.

The invention provides a production method of melamine foam plastic with ultralow formaldehyde residue, which comprises the following steps: mixing melamine and paraformaldehyde in a molar ratio of 1: (1.5-1.9) with water, carrying out hydroxymethylation reaction, adding an amino-terminated hyperbranched polymer, and carrying out pre-polycondensation reaction, thereby obtaining the melamine foam plastic with ultralow formaldehyde residue. A hyperbranched modified melamine-formaldehyde resin prepolymerization solution is obtained; mixing the hyperbranched modified melamine-formaldehyde resin prepolymer with an emulsifier, a foaming agent, a curing agent, a graphite phase carbon nitride / reduced graphene oxide composite photocatalyst and potassium persulfate serving as a cocatalyst, and performing microwave foaming to obtain a primary foam product; and carrying out post-curing treatment, putting the treated melamine foam into a closed circulating treatment bin provided with a photocatalytic reactor, introducing steam, and carrying out decomposition and purification treatment and drying, so as to obtain the melamine foam plastic with ultralow formaldehyde residue. The invention solves the problems of high residual quantity of formaldehyde in the melamine foam plastic and complex and low-efficiency subsequent treatment process.

The application discloses a kind of high elastic toughness antibacterial nanocomposite conductive hydrogel material and its preparation method and biomimetic sensing application, belong to the field of functional polymer materials.The application uses melamine foam as porous elastic skeleton, is modified in situ on foam skeleton growth polypyrrole nanoparticles, subsequently polymerizes polydopamine-polyacrylamide hydrogel network in its inside, obtains the multifunctional nanocomposite conductive hydrogel with stable interpenetrating structure.The composite conductive hydrogel of the application has the synergistic effect formed by electronic conduction and ionic conduction, not only has excellent conductivity (up to 12 mS·cm ‑1 ), but also has high elastic toughness and reversible compression performance, has excellent pressure sensing performance under low pressure (0.3 kPa), so as to realize efficient information transmission and encryption application as a pressure sensor.

The invention discloses a preparation method of a Janus photo-thermal evaporation foam material with self-recovery hydrophobicity, which specifically comprises the following steps: by taking melamine foam as a substrate, directionally spraying a composite solution at least containing graphene oxide, polydimethylsiloxane and epoxy resin on a single side, and curing to form an asymmetric structure with a sparse upper part and a hydrophilic lower part. According to the Janus photo-thermal evaporation foam material prepared through the preparation method, self-recovery hydrophobicity is achieved through the molecular chain dynamic recombination characteristic of PDMS, efficient photo-thermal conversion is achieved through the high light absorptivity of the two-dimensional carbon material, and the mechanical stability and structural integrity of a coating are guaranteed through combination of epoxy resin and a single-face spraying technology. The prepared Janus foam material has an evaporation rate higher than 1.2 kg.m <-2 >. H <-1 > under sunlight illumination, has excellent photothermal conversion efficiency, can recover hydrophobicity within 5 minutes after a hydrophobic layer is oxidized by ultraviolet rays, and has wide application prospects in the fields of solar seawater desalination, oil-water separation and the like.

The present application relates to the technical field of photocatalytic treatment of antibiotics in wastewater, and particularly relates to a composite photocatalytic material, a preparation method and application thereof. Melamine, palygorskite and water are mixed to obtain a mixed solution; the mixed solution is mixed with melamine foam, and after the melamine foam absorbs the mixed solution, drying is performed to obtain a precursor; the precursor is calcined to obtain the composite photocatalytic material. The composite photocatalytic material prepared by the present application can effectively improve the performance of the material in adsorbing antibiotics in water, enhance the photocatalytic degradation activity, and is easy to recycle, thus having a broad development prospect.

The invention discloses a hygroscopic magnesium air battery positive electrode material and a preparation method and application thereof, and belongs to the field of new energy batteries. The hygroscopic magnesium air battery positive electrode material comprises a first porous conductive substrate and a second porous conductive substrate, wherein the first porous conductive substrate comprises sheet-shaped melamine foam and a positive electrode reaction catalyst and a hydrophilic carbon nanotube which are loaded on the surface of the sheet-shaped melamine foam; the perfluorinated sulfonic acid resin is loaded on one side surface of the first porous conductive substrate and forms a hydrophobic surface; the LiCl is loaded on the other side surface of the first porous conductive substrate and in the first porous conductive substrate, and a LiCl hydrophilic surface is formed on the other side surface; wherein in the direction from the hydrophilic surface of the LiCl to the hydrophobic surface of the LiCl, the loading capacity of the LiCl is gradually reduced in a gradient manner. Compared with the prior art, the magnesium air battery positive electrode material disclosed by the invention can directly absorb moisture from air to form electrolyte, so that the weight of a magnesium air battery is effectively reduced, and meanwhile, the discharge duration is prolonged.

The utility model relates to the technical field of glass, and discloses multilayer sound-insulation noise-reduction tempered glass, which is characterized in that the stability of an outer sound-insulation plate and an inner sound-insulation plate is enhanced by optimizing the design of a fixed clamping block on an outer frame, the reliability of the whole structure is improved, and the maintenance cost is reduced; the glass layer is coated with an anti-reflection film through the magnetron sputtering coating technology, optical performance is improved, glare is reduced, the frame and the internal supporting structure are sealed through the vacuum layer in a hot melting mode, the defect that in the prior art, sealing performance is prone to being affected by the environment is overcome, and stable sound insulation performance is guaranteed. The damping sound insulation layer is made of butyl rubber materials, vibration is effectively restrained, and low-frequency noise is blocked; the sound-absorbing layer adopts melamine foam and irregular sound-absorbing holes engraved by laser, the absorption capacity for full-band noise is greatly improved, sound-absorbing material layers are additionally arranged on the outer sound-insulating plate and the inner sound-insulating plate, concave-convex textures are designed on the surface of a tempered glass outer frame, sound-absorbing cotton is filled, the sound-absorbing effect is further enhanced, and the sound-absorbing effect is further improved in a complex noise environment. The excellent sound insulation and noise reduction performance is shown.

This invention discloses a triangular SiC hollow tube aerogel, its preparation method, and its applications, relating to the field of microtube technology. The method includes uniformly mixing SiO powder, tetraethoxysilane, hydrochloric acid, and deionized water to obtain solution A; solidifying and grinding solution A to obtain powder B; cutting melamine foam to a specific size to obtain sample C; placing sample C in a chemical vapor deposition furnace to obtain sample D; and heat-treating and oxidizing the sample aerogel assembly in an inert atmosphere to obtain a structurally stable and continuous triangular SiC hollow tube aerogel. This invention introduces an intermediate layer of pyrolytic carbon, which provides a carbon source for SiC formation and, more importantly, protects the melamine framework, effectively preventing melamine shrinkage and collapse under high-temperature heat treatment.

The invention discloses a preparation method of a Z-type heterojunction photocatalytic evaporator with excellent environmental adaptability. The preparation method comprises the following steps: 1, grinding melamine powder and sodium chloride, and uniformly mixing; step 2, putting the uniformly mixed medicines into a muffle furnace for reaction; step 3, taking out a reactant, washing with water, centrifuging and drying to obtain porous g-C3N4; step 4, adding sodium alginate into water to form a uniform and transparent solution; step 5, sequentially adding a pyrrole monomer Py and the porous g-C3N4 into the uniform and transparent solution, and mixing to prepare homogeneous slurry; step 6, infiltrating melamine foam into the homogenized slurry, and transferring the melamine foam into a CaCl2 solution to carry out first-step cross-linking immobilization; and 7, further treating the sample subjected to calcium ion crosslinking treatment in a FeCl3. 6H2O solution to obtain the Z-type heterojunction photocatalytic evaporator material. The preparation method has the characteristics of simple preparation process, high environmental adaptability and stable structure.

The invention provides a preparation method of a heat-insulating and wave-absorbing composite material, which comprises the following steps: 1) soaking melamine foam in a dopamine hydrochloride aqueous solution to form modified melamine foam; step 2) soaking the modified melamine foam in a carbonyl iron dispersion liquid, so that carbonyl iron is uniformly loaded on the surface of the modified melamine foam to form melamine foam loaded with carbonyl iron; (3) soaking the melamine foam loaded with carbonyl iron in an aqueous solution of polyamic acid and triethylamine, and compounding the polyamic acid and triethylamine to form composite wet gel; 4, the composite wet gel is frozen with liquid nitrogen and then subjected to freeze drying, and then thermal imidization treatment is conducted to obtain the heat insulation and wave absorption composite.The heat insulation and wave absorption composite successfully solves the problem of performance balance between high-porosity heat insulation and high-load wave absorption in a light composite, and the heat insulation performance and the wave absorption performance are synergistically improved.

This invention provides a photothermal conversion phase change insulation flexible composite pipe and its preparation method, comprising a base pipe layer and, from the inside out, an adhesive transition layer, a phase change insulation layer, a photothermal conversion layer, and a protective layer. The base pipe layer consists of an inner lining layer, a double-layer fiber reinforcement layer, and an outer protective layer. The adhesive transition layer is a mixture of ethylene-vinyl acetate copolymer and silane coupling agent. The phase change insulation layer uses modified melamine foam as a skeleton, loaded with erythritol phase change material and nano-silica. The photothermal conversion layer is a composite layer of polydopamine and waterborne polyurethane. The protective layer is a polyvinyl fluoride layer. The preparation method includes extrusion winding of the base pipe layer, thermal spraying of the adhesive transition layer, vacuum impregnation and hot pressing of the phase change insulation layer, spraying and drying of the photothermal conversion layer, and extrusion cooling and shaping of the protective layer. This invention achieves a combination of photothermal conversion energy storage and flexible insulation, with strong layer bonding, good flexibility, high mechanical strength, low heat loss, energy saving and environmental protection, and is suitable for various scenarios such as centralized heating and industrial steam transportation.

This invention provides a method for preparing a biomimetic three-dimensional trapezoidal frustum-shaped interface evaporator inspired by mangrove root systems, as well as the biomimetic three-dimensional trapezoidal frustum-shaped interface evaporator itself. The evaporator uses melamine foam as a porous framework, waterborne polyurethane as a binder, and reduced graphene oxide as a photothermal layer, and is fabricated through biomimetic structural design and composite processes. The evaporator features a trapezoidal frustum-shaped geometry that is narrower at the top and wider at the bottom. During solar-driven interface evaporation, it spontaneously forms and couples temperature gradients, salt concentration gradients, the Marangoni effect, and a gravitational field, inducing directional transport and reflux dilution of high-salt fluids. This fundamentally inhibits salt crystallization at the evaporation interface, achieving efficient, stable, and long-term solar-driven seawater desalination. This invention also relates to the application of this evaporator in seawater desalination, providing a new solution for efficient, stable, and scalable solar-driven interface evaporation technology.

The invention relates to a high polymer material, in particular to a lightweight corrosion-resistant electromagnetic shielding composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: modifying melamine foam by adopting a modifier to obtain modified melamine foam; silver is plated on the surface of the modified melamine foam, silver-plated modified melamine foam is obtained, then pores in the silver-plated modified melamine foam are sealed with graphene, and the lightweight corrosion-resistant electromagnetic shielding composite material with the pores sealed with graphene is obtained. The lightweight corrosion-resistant electromagnetic shielding composite material provided by the invention has high electromagnetic shielding effectiveness and high salt spray resistance.

The invention discloses a preparation method of a mica melamine composite material and mica melamine composite cotton. The preparation method comprises the following steps: preparing a high-temperature-resistant adhesive; coating a high-temperature-resistant adhesive on one side of the mica; melamine foam is attached to the mica gluing face in the step S2, and an attached body is formed; the preparation process is simple, the effect in the field of heat preservation and heat insulation is outstanding, and the composite material is an ideal hard thermal runaway protection material, has excellent buffering capacity and heat insulation effect during charging and discharging, and has the effect that the composite material is not worn at the temperature of 1300 DEG C for 30 minutes.

The invention relates to the technical field of materials, in particular to an organic montmorillonite modified soft melamine foam material and a preparation method thereof. The organic montmorillonite modified melamine foam disclosed by the invention is mainly prepared from the following raw materials in parts by mass: 100 parts of organic montmorillonite modified melamine-formaldehyde pre-polycondensate, 0.5 to 10 parts of a surfactant, 2 to 20 parts of a foaming agent, 2 to 15 parts of a catalyst, 0 to 5 parts of an auxiliary agent and 0 to 30 parts of water. The organic montmorillonite modified melamine foam disclosed by the invention not only has excellent mechanical properties, but also has excellent flame retardant property and thermal stability. The preparation method of the organic montmorillonite modified melamine foam is simple, raw materials are easy to obtain, and the organic montmorillonite modified melamine foam has the potential of large-scale popularization and application.