45results about How to "Stop burning" patented technology

The invention discloses a safe airtight cold-resistant low-smoke flame-retardant control cable used in an explosion environment, and relates to the technical field of cables, a first hot melting pipe is filled with expanded graphite, the outer side of a wrapping tape is uniformly sleeved with protective iron rings at intervals, the outer sides of the protective iron rings are uniformly provided with fixing holes at intervals, and a communication port is formed between every two adjacent fixing holes; according to the invention, the heat insulation cotton, the compression-resistant rib, the protection iron ring, the arc-shaped elastic sheet, the arc-shaped frame and the elastic roll absorb and buffer external force, so that the compression resistance and impact resistance of the cable are enhanced; the aluminum hydroxide powder absorbs a large amount of heat and delays combustion, the expanded graphite in the first hot melting pipe is heated to expand, the expanded graphite is diffused to a gap between the shielding layer and the wrapping layer, flame is prevented from combusting to the interior of the cable, the working time is prolonged, and the economic loss is reduced.

The invention relates to the technical field of battery protection, in particular to a UPS (Uninterrupted Power Supply) battery pack with a fireproof function, which comprises a shell, a placement frame and the like, an opening is formed in the front side of the shell; a placement frame is slidably connected in the shell; and a plurality of clapboards are arranged on the placing rack. When a certain battery abnormally heats, the temperature detected by a temperature sensor rapidly rises, at the moment, an electromagnet stops fixing a push block, the push block turns over to push a limiting block away from a first groove, a placement frame and a wiring board are pushed to move forwards through a first elastic piece, and the placement frame and the wiring board are fixed. The abnormal battery is limited by the pushing block which is overturned to be in a transverse state, so that the abnormal battery cannot move forwards along with the placing frame, the intact battery can move forwards along with the placing frame, and after the placing frame is pushed away from the shell by the first elastic piece, the abnormal battery loses the support of the partition plate and falls into the isolation cavity. The abnormal battery is extinguished and cooled through the extinguishment dry powder in the isolation chamber, so that the undamaged battery is prevented from being affected by spontaneous combustion of the abnormal battery.

The invention discloses an injection molding method of an anti-aging simulation plant. The injection molding method comprises the following steps: preparing raw materials; uniformly mixing the raw materials according to a set material proportioning model so as to obtain anti-aging proportioning raw materials exceeding a preset threshold value; according to the shape and the size of the simulation plant, through a system integrated with an intelligent design engine, design data are extracted, and a design mold is generated; the proportioned raw materials are heated in a heating cylinder of an injection molding machine to be in a molten state, and molten plastic is obtained; the molds are firmly clamped together; injecting the molten plastic into the cavity of a mold under a predetermined pressure; a preset pressure of a preset time is kept in the cavity; cooling and solidifying the material in the mold to form the shape of the mold; and opening the mold to obtain the formed simulation plant. According to the technical scheme, the service life of the anti-aging simulation plant is prolonged, and the safety of the anti-aging simulation plant is improved by optimizing the raw material ratio, accurately controlling the injection molding process and other key steps.

The invention relates to the technical field of rubber, and discloses low-temperature-resistant rare earth butadiene rubber and a preparation method thereof. Phosphorus-containing quaternary ammonium salt modified polyurethane, polyethoxylene ether modified phenolic resin, rare earth butadiene rubber and sulfur are added into an internal mixer to be mixed and then vulcanized, and the low-temperature-resistant rare earth butadiene rubber is obtained. In the phosphorus-containing quaternary ammonium salt modified polyurethane, silicon-oxygen bonds enable the rubber to maintain stability at low temperature, so that the low-temperature-resistant effect of the rubber is improved; polyurethane and a rubber molecular chain form an interpenetrating polymer network, so that the mechanical property of the rubber is improved; due to the soft segment chain of polyurethane, the rubber has better toughness at low temperature, and the low temperature resistance of the rubber is improved; an ether bond in polyoxyethylene ether has flexibility and stability, so that the rubber is not easy to crystallize or cure at low temperature; phosphorus, silicon and sulfur elements are used together to generate a synergistic flame-retardant effect, so that the flame retardance of the rubber is improved; the phenolic resin plays a reinforcing role in the rubber, so that the mechanical property of the rubber is improved.

The utility model relates to an electric vehicle shed automatic fire extinguishing system, including parking shed, fire extinguishing unit, monitoring unit, computing platform, control cabinet and charging main loop, parking shed includes a plurality of fire protection subareas, fire extinguishing unit includes water pump, solenoid valve, nozzle, each fire protection subarea is equipped with a plurality of nozzles, and the fire protection subarea is equipped with a plurality of nozzles. The electromagnetic valve is communicated with the spray head of each fireproof zone, an outlet of the water pump is communicated with the electromagnetic valve, the water pump is connected with the water inlet pipe, and the electromagnetic valve and the water pump are in communication connection with the control cabinet through the operation platform. After a fire occurs, information such as the position and the scale of the fire is calculated through various sensing signals for image confirmation, then the position and the range of the fire are determined through an image algorithm of the control cabinet, the positions and the number of the started sprayers are selected by controlling the electromagnetic valve, the whole process is accurate, efficient and energy-saving, the water pressure of the sprayers is guaranteed, and the fire fighting effect is ensured.

The invention relates to the technical field of new materials, and discloses a flame-retardant functionalized carbon nanotube modified polyethylene material, which is characterized in that organic functional groups and starch macromolecules are introduced to the surfaces of carbon nanotubes, so that the intermolecular distance of the carbon nanotubes is increased, the agglomeration phenomenon of the carbon nanotubes is inhibited, and the flame-retardant functionalized carbon nanotube modified polyethylene material is prepared. According to the present invention, the carbon nano-tubes are introduced into the polyethylene, such that the carbon nano-tubes can be easily dispersed, the carbon nano-tubes can provide the good mechanical property enhancing effect on the polyethylene, the phosphorus element is introduced on the surfaces of the carbon nano-tubes, the starch having the excellent char forming property is introduced, and the flame-retardant phosphoric acid, the flame-retardant polyphosphoric acid and the like can be formed during combustion so as to promote the char forming of the starch and the polyethylene; according to the present invention, the carbon layer with the barrier property is rapidly formed, and the barrier carbon layer can isolate oxygen and heat so as to prevent the further combustion of the polyethylene material, such that the flame retardation self-extinguishing effect is provided so as to obtain the polyethylene material with characteristics of good flame retardation and good mechanical property.

The invention discloses a low-density flame-retardant organic silicon foam composition, a silicon rubber foam material and a preparation method of the low-density flame-retardant organic silicon foam composition and the silicon rubber foam material, and the foam composition comprises the following components in parts by weight: (A) 100 parts of organopolysiloxane; (B) 5-100 parts of a reinforcing filler; (C) 20-100 parts of a composite flame-retardant filler; (D) 1-10 parts of a structuring control agent; (E) 1-10 parts of a foaming agent; (F) 1-10 parts of an auxiliary foaming agent; (G) 1-10 parts of hydrogen-containing siloxane; (H) 0.01-3 parts of a platinum group metal compound catalyst; (I) 0.01-1 part of an inhibitor; according to the organic silicon foam composition, the component (F) and the component (E) are introduced, so that the foaming speed and the curing speed can be better matched, the organic silicon foam composition has a relatively high foaming ratio after being cured, the density of a material can be remarkably reduced, and meanwhile, foam pores of foam are uniform and fine in size.

The invention relates to the technical field of plastic products, and discloses a degradable automobile recycled plastic product and a preparation method thereof. According to the plastic product disclosed by the invention, degradable polylactic acid is taken as a main raw material, and automobile recycled plastic particles are added to reduce the utilization of polylactic acid, so that the environmental pollution caused by waste plastic particles is reduced through waste utilization, and the production cost is reduced; in the composite reinforcing agent, firstly, the three elements N, P and B have a synergistic effect to improve the flame retardant property of a matrix, meanwhile, the nanosheet with a layered structure is used for synergistic flame retardance to further improve the flame retardant property of the matrix, the nanosheet introduced into the composite reinforcing agent further has certain photocatalytic performance, macromolecular polymers can be catalytically degraded into micromolecular substances, and the flame retardant property of the matrix is further improved. The degradation rate of the matrix is improved. Therefore, the plastic product disclosed by the invention not only has excellent flame retardant property and degradability, but also reduces the production cost.

The invention provides an intumescent flame-retardant fabric which comprises a fabric layer, an adhesive layer containing phosphorus and nitrogen doped graphene oxide, an adhesive layer containing dendritic polyguanidine / phytic acid Zn heterozygote and an adhesive layer containing acidified modified flaky silicon dioxide, the fabric layer, the adhesive layer containing phosphorus and nitrogen doped graphene oxide, the adhesive layer containing dendritic polyguanidine / phytic acid Zn heterozygote and the adhesive layer containing acidized modified flaky silicon dioxide are sequentially compounded to obtain the flame-retardant fabric, the intumescent flame-retardant method is adopted, the contact between a fire source and the fabric layer is isolated by utilizing the synergistic effect of the three flame-retardant coating layers, and the flame-retardant effect is achieved. Therefore, the fabric is endowed with flame retardant property.

The invention relates to the technical field of materials, and discloses a high-strength flame-retardant plastic-wood board and a manufacturing process thereof.The high-strength flame-retardant plastic-wood board is formed by mixing and extruding wood flour and modified polyvinyl chloride serving as base materials with mullite fiber additives, stabilizers and other auxiliary materials. According to the present invention, the halogen substituent group in the polyvinyl chloride structure is reduced by using the substitution reaction, the nitrogen, phosphorus and sulfur ternary flame retardant elements are introduced, such that the prepared plastic-wood plate has excellent flame retardant property, and the mullite fiber additive can provide the bridge effect so as to provide the good bonding property between the wood powder and the modified polyvinyl chloride, the mullite fibers are added into the plastic-wood board, so that the structure of the plastic-wood board is more compact, the strength of the plastic-wood board is improved, the advantages of the mullite fibers can be efficiently exerted in the plastic-wood board, and the strength of the plastic-wood board can be further enhanced.

The invention discloses a shielding type fireproof flame-retardant solar photovoltaic cable, and belongs to the field of cables. The cable comprises a conductor, an insulating layer wrapping the outer layer of the conductor, a shielding layer wrapping the outer layer of the insulating layer and a sheath layer wrapping the outer layer of the shielding layer, and the sheath layer comprises crosslinked polyethylene, a fireproof flame retardant, polyether-ether-ketone and 2, 6-di-tert-butyl-4-methylphenol; the shielding layer is of a double-layer structure, and the inner layer and the outer layer are formed by weaving copper wires and tin wires. And the insulating layer comprises crosslinked polyethylene, tricresyl phosphate and zinc oxide. The fireproof flame retardant is added into the sheath layer, so that the fireproof flame retardant performance of the photovoltaic cable can be improved, the fireproof flame retardant performance of the sheath layer can be improved through lignin and triethyl phosphate, and when the photovoltaic cable is in a high-temperature environment, aluminum trihydrate and ammonium bicarbonate are decomposed to generate moisture, so that the flame retardant performance of the photovoltaic cable is improved. Therefore, the surface temperature of the photovoltaic cable is reduced, the combustion of the photovoltaic cable is inhibited, and the generation of smoke is inhibited.

The invention relates to the technical field of lithium ion battery diaphragm materials, in particular to a high-flame-retardant lithium ion battery multi-layer diaphragm as well as a preparation method and application thereof. The diaphragm is composed of multiple layers, a polyethersulfone diaphragm is adopted as a base material, a coating composed of a polymer with a gel function and a fast ion conductor is arranged on one side, close to the positive electrode, of the base material, and the polymer with the gel function contains a flame retardant; one side close to the negative electrode does not contain a coating or selects a ceramic coating or a polymer coating; the polymer coating is prepared by taking cationic MOF-867-Me as a filler, blending the filler with polyethylene oxide and [(cyano) (4-fluorobenzenesulfonyl)] lithium imine and carrying out a solution casting method. The prepared high-flame-retardant lithium ion battery multi-layer diaphragm can isolate combustibles and high active oxygen in a lithium ion battery, and through carbonization of the combustibles in the battery, a violent combustion reaction is converted into a mild gradual exothermic reaction.

The utility model discloses an electrical cabinet capable of preventing high-temperature fire, which relates to the field of electrical cabinet structures and comprises a cabinet body with heat dissipation holes, a carbon dioxide generating mechanism is arranged on the cabinet body, and the carbon dioxide generating mechanism is provided with air outlet holes communicated with the inside of the cabinet body; the carbon dioxide generating mechanism comprises a sliding cavity and a reaction cavity, the sliding cavity and the reaction cavity are communicated through a communicating hole, and the communicating hole is sealed by a sealing piece with opening pressure; an extrusion plate is connected in the sliding cavity, an acid solution is stored in the sliding cavity between the extrusion plate and the sealing piece, and calcium carbonate particles are stored in the reaction cavity; the air outlet communicates with the reaction cavity; a smoke detector electrically connected with the controller is arranged in the cabinet body, and the controller is electrically connected with the carbon dioxide generating mechanism or / and the alarm. According to the utility model, the oxygen content in the electrical cabinet can be rapidly reduced at the beginning of combustion, so that combustion is prevented, continuous proceeding and aggravation of combustion are avoided, the damage amount of electrical components in the electrical cabinet is reduced, and the purpose of reducing economic loss is achieved.

This utility model discloses a lithium battery module with an explosion-proof protection structure, including a main body component. The main body component includes a base, connecting rods connected to both ends of the base, a protective shell fixed to the base, and a battery fixedly placed inside the protective shell. A fire extinguishing component includes a base plate threaded to the top of the battery, an L-shaped plate fixed to the base plate, a spring horizontally fixed to the L-shaped plate, a rolling gear connected to the spring, a large gear engaged with the rolling gear, a ball valve fixed to the large gear by a long rod, a fixed shell sleeved outside the ball valve, and a sandbox connected above the fixed shell. A cooling component includes a circulation pipe connected to the connecting rods. This utility model, through its fire extinguishing component, releases a special agent to isolate air and prevent combustion when the lithium battery module begins to burn due to excessive temperature, thus delaying the explosion, buying more time for rescue, and preventing greater economic losses.

The present invention provides a high-strength and tough lightweight magnesium alloy, which comprises, by mass percentage, 6.0-15.0% Li, 1.0-4.5% Ni, 1.0-5.0% Cd, 4.0-7.0% Zn, 0.5-5.0% Gd, 0.5-3.0% Sr, the total amount of impurity elements Si, Fe, and Cu is less than 0.02%, and Mg is the balance. The present invention also provides a method for preparing the high-strength and tough lightweight magnesium alloy. The high-strength and tough lightweight magnesium alloy provided by the present invention has high strength and good toughness, and the preparation method of the high-strength and tough lightweight magnesium alloy provided by the present invention is simple and easy, can be industrialized and mass-produced, and has low production cost.

The utility model relates to the technical field of lithium ion batteries, in particular to a discharge cabinet for recycling lithium ion batteries, which is internally provided with a cabinet body, the front end face of the cabinet body is rotatably provided with a front end baffle door, the upper end face of the front end baffle door is fixedly provided with four mounting boxes, the cabinet body is internally provided with four discharge cavities with forward openings, and the mounting boxes are internally and fixedly provided with battery bodies. According to the utility model, the residual electric quantity in the battery body can be released through the discharge resistor, the lithium battery can be prevented from burning in time by spraying dry powder, the work detection lamp is indicated to flicker a red light, and the burning condition is sent to the Internet through the control panel; therefore, when the lithium ion battery is recycled, the residual electric energy can be safely released, and the economic loss caused by explosion or combustion is reduced.

The invention discloses an immersed cooling liquid and a preparation method thereof, and relates to the technical field of cooling liquids, the immersed cooling liquid comprises the following raw materials by weight: 90-100 parts of base oil, 7-9 parts of an auxiliary agent A, 4.5-5.5 parts of an auxiliary agent B, and 0.5-1.0 part of an antifoaming agent. The auxiliary agent A is obtained by modifying a high-thermal-conductivity insulating filler through a reaction and introducing benzotriazole and an alkane long chain. The auxiliary agent B is a substance which contains hindered phenol, DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and an alkane long chain and has a hyperbranched macromolecular structure. The auxiliary A and the auxiliary B are added, so that the immersed cooling liquid has excellent thermal conductivity, corrosion inhibition, oxidation resistance and flame retardance, the synthesis process of the auxiliary A and the auxiliary B is environmentally friendly, and the immersed cooling liquid is worthy of being popularized in the technical field of cooling liquid and has a considerable application prospect.

This invention relates to the field of lithium battery technology, specifically disclosing a lithium battery with a flame-retardant structure, including a battery outer shell, a battery inner shell disposed inside the battery outer shell, and a partition cavity formed between the battery outer shell and the battery inner shell. The partition cavity contains a flame-retardant material that prevents combustion. It also includes a control device for controlling the connection between the battery inner shell and the partition cavity. This invention, by providing a battery outer shell and a battery inner shell for storing the battery, forming a partition cavity between the battery outer shell and the battery inner shell, and containing a flame-retardant material inside the partition cavity, and by providing a control device for controlling the connection between the battery inner shell and the partition cavity, allows the flame-retardant material to enter the battery inner shell and prevent combustion of the battery inside the battery inner shell when the lithium battery is in a fire environment or is itself burning. This effectively improves the flame-retardant capability of the lithium battery and increases its safety performance.

The utility model discloses an automatic fire protection intelligent charging pile, which belongs to the technical field of charging piles and comprises a pre-embedded box, a charging pile body is fixedly connected to the top of the pre-embedded box, a top plate is fixedly connected to the top of the charging pile body, and a shell is fixedly connected to the left side of the pre-embedded box. A motor is fixedly mounted at the top of an inner cavity of the shell, and the output end of the motor is fixedly connected with a threaded rod. The motor drives the threaded rod to rotate, the threaded rod drives the threaded sleeve to move upwards, the threaded sleeve drives the transverse plate to move upwards, and the transverse plate drives the protection frame to move upwards till the top of the protection frame is tightly attached to the bottom of the top plate, so that a closed space is formed between the protection frame and the top plate; and the protection frame and the top plate are both made of fireproof materials, so that fire can be effectively prevented from spreading to the charging pile body, and the situation that the charging pile body burns or explodes is prevented.

The invention discloses a flame-retardant energy storage cable and a preparation method thereof, and relates to the technical field of energy storage cables. The flame-retardant energy storage cable sequentially comprises a copper wire bundle stranded conductor, an insulating layer, a shielding layer and an outer protective layer from inside to outside, and an outer protective layer material for forming the outer protective layer at least comprises the following raw materials in parts by mass: 45-65 parts of an olefin copolymer, 15-20 parts of a filler, 15-25 parts of a composite flame retardant, 0.1-0.5 part of an antioxidant and 0.4-0.8 part of a lubricant, the composite flame retardant is a magnesium-aluminum layered double hydroxide-arginine-ammonium polyphosphate composite flame retardant. The flame-retardant energy storage cable prepared by the invention has relatively high tensile strength and elongation at break as well as excellent flame-retardant property.

The utility model provides a military anti-interference high-temperature-resistant computer cable, which belongs to the technical field of cables and comprises a cable body, the cable body comprises reinforcing ribs, a center piece and an insulating layer, a cable core is arranged between the inner insulating layer and the center piece, a high-temperature-resistant flame-retardant functional layer is arranged on the inner insulating layer, and the center piece is provided with a high-temperature-resistant flame-retardant functional layer. The high-temperature-resistant flame-retardant functional layer comprises a first metal net shielding layer, a second metal net shielding layer and a flame-retardant layer which are formed by weaving, and the high-temperature-resistant flame-retardant functional layer improves the overall high-temperature-resistant flame-retardant performance of the cable on the premise of not influencing the tensile and torsion-resistant capabilities of the outer protective layer. Aluminum hydroxide and magnesium hydroxide flame retardants are combined with the metal net layer after being heated to form a metal oxide which covers the surface of the cable, the effects of isolating heat and oxygen transfer are achieved, continuous combustion of the material can be prevented, the flame-retardant synergistic effect is achieved under the cooperation of the boehmite flame retardant, the flame-retardant time can be further prolonged, and the service life of the cable is prolonged. And the internal conductor is protected.

The utility model discloses a fireproof foot pad, and relates to the technical field of new energy automobile interiors, the fireproof foot pad comprises a surface layer, a sponge layer and a fireproof anti-skid layer which are sequentially stacked from top to bottom, and the fireproof anti-skid layer has A-level fireproof performance. The fireproof foot pad provided by the utility model is provided with the integral fireproof anti-skid layer with A-level fireproof performance, that is to say, non-combustible materials are applied to the foot pad of the new energy automobile, so that the fire can be prevented from quickly spreading after a battery pack of the new energy automobile is deflagrated, and a longer escape time is provided for passengers. In addition, as the fireproof anti-skid layer is a whole made of one material, the whole foot pad can be prevented from being burnt from the bottom of the fireproof foot pad, the lower portion of the foot pad is prevented from being burnt, and therefore the heat insulation performance of the whole foot pad is better. And the fireproof and anti-skidding layers are arranged in the same layer, so that the fireproof foot pad has fewer structural layers and is convenient to manufacture. In addition, the fireproof foot pad is provided with the sponge layer, the surface layer can be supported, and the heat insulation performance of the fireproof foot pad can be further improved. The fireproof foot pad is provided with the surface layer, so that the foot pad is attractive, wear-resistant and stain-resistant.

The invention relates to the technical field of epoxy resin composite material production, in particular to a high-thermal-conductivity flame-retardant composite material and a preparation method thereof.The preparation method comprises the steps that the surface of nickel-plated graphite is subjected to silane treatment, ferroferric oxide and magnesium hydroxide (aluminum hydroxide) are prepared into a mixture through ball milling, and then the mixture is evenly mixed with epoxy resin and a curing agent; then, by means of the effect of a surface magnetic field, a compound of nickel-plated graphite, trioxide and magnesium hydroxide is settled to the bottom, bottom heating is carried out to promote bottom epoxy cross-linking curing, and meanwhile the upper fluidity is kept; and finally, overturning the sample, promoting the upper nickel-plated graphite and the compound of the trioxide and the magnesium hydroxide to settle to the other side by virtue of the action of a surface magnetic field, and finally heating the bottom for crosslinking and curing, thereby obtaining the sandwich type anisotropic electric-conduction and heat-conduction epoxy adhesive. The use amount of the filler in the epoxy resin composite material is reduced, and relatively good conductive and flame-retardant effects can be realized at the same time.

The present invention relates to the technical field of lithium-ion batteries, and in particular to a conductive film and a preparation method thereof, wherein the conductive film comprises a metal layer, a first film layer, a high-temperature resistant sponge layer and a conductive film layer which are compounded in sequence, the high-temperature resistant sponge layer is filled with a flame retardant, a plurality of holes are opened on the conductive film layer, the holes are filled with a plugging agent for plugging the holes, and the softening point of the plugging agent is 50-100° C. The conductive film of the present invention has the function of preventing the battery temperature from rising and improving the battery safety.

The utility model relates to a bus board heat-resisting structure based on a battery management system, which comprises a heat-insulating box capable of accommodating a bus board, a moving component and a heat-dissipating component, and further comprises a temperature sensor and a controller which are electrically connected with the battery management system, and the heat-dissipating component is at least used for sucking air inside the heat-insulating box to the outside of the heat-insulating box. A top plate is fixedly mounted at the top of the heat insulation box, heat insulation blocks are arranged at the bottoms of the heat dissipation strip openings, and the moving assembly is at least used for synchronously driving the multiple heat insulation blocks to move in the length direction of the top plate; when the heat insulation block is moved, the heat dissipation strip opening has one of the three states that the heat dissipation strip opening is completely shielded by the heat insulation block, partially shielded by the heat insulation block and not shielded by the heat insulation block. According to the utility model, the heat of the confluence plate can be prevented from influencing the adjacent battery assembly or battery management system; and when the bus board is combusted, the battery assembly or the battery management system can be prevented from being combusted through effective isolation of the heat insulation box and the heat insulation block.

The invention relates to a gas protection device for magnesium ingot casting, comprising a mold pre-filling gas pipe a, a mold pre-filling gas pipe b, a gas filling pipe, a pneumatic component, a control system, an electromagnetic valve, a regulating valve a, a casting protective gas pipe piece, a steel plate, a casting protective nozzle, a regulating valve b, a formed magnesium ingot protection pipe, a regulating valve c and a protective gas pipeline; before and when the magnesium ingot casting starts, the regulating valve, the electromagnetic valve and the nozzle are controlled to solve the problems of magnesium ingot surface burning during magnesium ingot casting, resulting in unqualified magnesium ingot quality, and the like.

Relating to the technical field of castable, the invention discloses an energy-saving and environment-friendly furnace top nano thermal insulation castable, which comprises the following raw materials by weight: 13-15 parts of hollow microspheres, 2-4 parts of a nano thermal insulation material, 20-25 parts of perlite, 32-35 parts of flint clay, 5-7 parts of activated alumina micro powder, 5-7 parts of soft clay, 20-22 parts of high temperature cement, 3-5 parts of an expanding agent, and 0.3-0.4 part of a water reducer. The nano thermal insulation material comprises the following raw materials in parts by weight: 60-80 parts of fumed silica, 20-30 parts of titanium dioxide, 5-7 parts of glass fibers and 3-5 parts of modified fibers. The synthesized modified fiber is obtained by grafting a functional monomer containing a terminal carbon-carbon double bond, triazine and POSS (Polyhedral Oligomeric Silsesquioxane) with an organic fiber. The furnace top nanometer heat preservation castable is good in compression strength, high temperature resistance and flame retardance, energy-saving, environment-friendly, good in castable integrity, more convenient to construct and worthy of popularization.

The invention discloses an epoxy resin composition, flame-retardant epoxy resin and a preparation method and application thereof, relates to the technical field of epoxy resin, and solves the problem that the performance of the existing epoxy resin for hydrogen storage cylinders cannot meet the production and application requirements. The preparation method comprises the following steps: dissolving 2-(4-hydroxyphenyl) ethylamine in a solvent in a nitrogen atmosphere, adding hydroxybenzaldehyde, carrying out a reflux reaction, precipitating a crude product through deionized water, purifying with methanol and ethanol, carrying out vacuum evaporation on the solvent, and carrying out vacuum drying to obtain an intermediate; dissolving the intermediate in 3-chloropropylene oxide in a nitrogen atmosphere, adding tetrabutylammonium bromide for reflux reaction, cooling the solution, then adding a sodium hydroxide aqueous solution for continuous reaction, cooling the mixture to room temperature, repeatedly washing with deionized water to remove byproducts, adding anhydrous magnesium sulfate to dry the reaction mixture overnight, and then evaporating and vacuum drying to obtain the product. And removing unreacted 3-chloropropylene oxide to obtain a target product. The preparation method can be applied to preparation of the IV-type full-winding hydrogen storage bottle wall.

The present invention discloses a composite material for 3D printing and a preparation method thereof, and relates to the field of 3D printing materials, including the following raw materials in parts by weight: 60-70 parts of polylactic acid resin, 30-40 parts of poly (4-hydroxybutyrate), 6-8 parts of a compatibilizer, 8-12 parts of a filler, 1.2-1.5 parts of an anti-hydrolysis agent, 0.6-0.8 parts of an antioxidant, 1-3 parts of a plasticizer, and 1-3 parts of a nucleating agent. The synthesized compatibilizer contains a poly (4-hydroxybutyrate) structure, an epoxy group, and a polysiloxane chain in the molecule to improve the mechanical properties and heat resistance of the composite material for 3D printing. The synthesized anti-hydrolysis agent contains a polyester structure, a polyphosphoramide structure, and a polycarbodiimide structure in the molecule to improve the flame retardancy and hydrolysis resistance of the material.

The invention relates to the field of building materials, in particular to a template-free multi-layer composite structure self-compacting light fireproof inner wall which is characterized by comprising a self-compacting light concrete layer, a fireproof heat insulation layer, a damp-proof sound insulation layer and a decorative surface layer. The self-compacting lightweight concrete layer is composed of cement, fly ash, pottery sand, expanded perlite, polypropylene fiber, vermiculite powder, chlorinated paraffin, zinc borate, ammonium polyphosphate melamine salt (PPAM), nano magnesium hydroxide, titanate melamine salt (TMS) and a zinc borate melamine compound (ZBMC). And the construction process is greatly simplified and the construction time and the labor cost are reduced due to the construction mode without a template. The self-leveling performance of the self-compacting lightweight concrete ensures the stability and consistency of the construction quality. By adopting the lightweight aggregate and optimizing the mix proportion, the self weight of the wall body is effectively reduced, meanwhile, sufficient strength and stability are ensured, and the load of a building is reduced.