264 results about "Intumescent" patented technology

The invention discloses a porcelainized expansion type fireproof heat-insulating coating and a preparation method thereof, and relates to the technical field of fire prevention, and the fireproof heat-insulating coating comprises an inner coating and an outer coating; the preparation method comprises the following steps: S1, weighing the raw materials of the component A and the component B; s2, preparing the component A; s3, preparing a component B; s4, the surface of the steel structure is coated with the component A, and an inner coating of the fireproof heat-insulating coating is obtained after normal-temperature drying; and continuously coating the surface of the dried inner coating with the component B through a spraying or brushing method, and drying at normal temperature to obtain the ceramifiable expansive fireproof heat-insulating coating. A porcelainized reaction and an intumescent flame-retardant system are combined to protect the steel structure material from two aspects of efficient flame retardance and high-temperature heat insulation, and the effect is excellent; a nitrogen-phosphorus synergistic flame retardant is used for actively inhibiting the flame combustion process, a high-temperature expansion layer formed by expansible graphite and a vitrifiable heat insulation layer formed by ceramic forming filler are used for greatly improving the high-temperature stability and heat insulation efficiency of a carbon layer, and the fire endurance of a steel structure is prolonged.

The invention provides a water-based intumescent fireproof coating as well as a preparation method and application thereof, and relates to the technical field of coating materials. The water-based intumescent fireproof coating is prepared from the following components in parts by weight: 25 to 35 parts of water-based silicone acrylic emulsion, 40 to 60 parts of flame retardant, 15 to 25 parts of water, 5 to 10 parts of titanium dioxide and 1 to 5 parts of coalescing agent, wherein the flame retardant is ammonium polyphosphate modified by 1-cyclohexylpiperazine. According to the water-based intumescent fireproof coating disclosed by the invention, the silicone acrylic emulsion is used as a main film forming substance, the 1-cyclohexylpiperazine modified ammonium polyphosphate is used as a flame retardant, and the titanium dioxide is used as a filler to form a fireproof intumescent system, so that the water-based intumescent fireproof coating has the advantages of simple production process, excellent performance, environment friendliness and the like; and the prepared fireproof coating has good fireproof performance and durability.

The invention provides a high-carbon-layer-strength intumescent fireproof coating for a steel structure. The high-carbon-layer-strength intumescent fireproof coating for the steel structure is prepared from the following components in parts by mass: 0.3 to 0.6 part of cellulose, 18 to 23 parts of phosphorus flame retardant, 3 to 6 parts of modified nano titanium dioxide, 3 to 5 parts of modified expandable graphite, 0.6 to 1.8 parts of modified glass fiber, 1 to 3 parts of aluminum hydroxide, 1 to 3 parts of boric acid, 20 to 25 parts of emulsion, 22 to 32 parts of additive and 29 to 43 parts of water, wherein the modified nano titanium dioxide is a silane coupling agent grafted nano titanium dioxide; the modified glass fibers are alkali-treated glass fibers; the modified expandable graphite is acid-treated expandable graphite. The intumescent fire-retardant coating for the steel structure has excellent carbon skeleton strength and carbon-steel adhesion strength, the structural integrity of the intumescent fire-retardant coating can be kept under severe conditions such as high temperature, burning and airflow jetting, and the practical application performance is improved.

The invention relates to the field of flame retardants, and particularly discloses a flame retardant for an EVA material and a preparation method of the flame retardant. The invention relates to a flame retardant for an EVA material. The flame retardant is prepared from the following raw materials in percentage by weight: 30-40% of an organic nitrogen flame retardant, 45-55% of a phosphorus flame retardant, 10-15% of an intumescent flame retardant and the balance of modified montmorillonite, the modified montmorillonite is prepared from montmorillonite, methacryloyloxyethyl trimethyl ammonium chloride, a polymethyl vinyl ether / maleic anhydride copolymer, a silane coupling agent, a dispersing agent and an activating agent; the preparation method comprises the following steps: grinding the organic nitrogen flame retardant, the phosphorus flame retardant and the intumescent flame retardant, and stirring and dispersing with the modified montmorillonite; the preparation process is simple, the usage amount of the prepared flame retardant in the EVA material is small, and the flame retardant has good flame-retardant stability and does not affect the mechanical property of the EVA material.

The invention provides a light super-soft fire-resistant flame-retardant optical cable and a preparation method thereof. The light super-soft fire-resistant flame-retardant optical cable sequentially comprises a high-temperature-resistant optical fiber, a filling layer, a flame-retardant loose tube, a reinforcing layer, a heat insulation layer and a fire-resistant flame-retardant layer from inside to outside, the fireproof flame-retardant layer comprises the following preparation raw materials in percentage by mass: 55-65% of plasma activated mineral powder, 25-35% of a thermoplastic elastomer base material subjected to irradiation crosslinking treatment, 8-12% of a phosphorus-nitrogen intumescent flame retardant and 1.5-2.5% of a silane coupling agent; the nano mineral powder comprises a magnesium aluminum silicate compound, and the thermoplastic elastomer matrix comprises a blend of SEBS (Styrene-Ethylene-Butylene-Styrene) and TPU (Thermoplastic Polyurethane). The fire-resistant flame-retardant layer forms a ceramic protection layer at high temperature to perform fire-resistant flame-retardant protection and prevent heat transfer, and meanwhile, the heat insulation layer is matched to further prevent heat from being transferred to the cable core, so that the performance of the optical cable is ensured not to be influenced.

The invention provides a phase change enhanced ablation-resistant modified liquid silicone rubber material as well as a preparation method and application thereof, and belongs to the field of advanced materials. According to the invention, paraffin is adopted as a phase change filler, so that the ablation resistance and heat insulation performance of the expanded ceramic liquid silicone rubber material are remarkably improved, and the prepared silicone rubber composite material has the advantages of low density, low ablation surface temperature, strong carbon layer and high heat absorption capacity. The phase-change reinforced modified expanded ceramic flexible ablation-resistant material further improves the ablation resistance and high-temperature heat insulation performance of a liquid silicone rubber material, and has a good application prospect in the fields of aerospace thermal protection, building heat insulation and the like.

The invention discloses a halogen-free compound flame retardant and application thereof in an antistatic nylon 66 composite material, and belongs to the technical field of polymer composite materials. The halogen-free compound flame retardant is prepared by compounding 68 parts of an organic aluminum hypophosphite flame retardant, 20 parts of a nitrogen-phosphorus intumescent flame retardant, 10 parts of a two-dimensional layered inorganic substance and 2 parts of a coupling agent through a high-speed mixing and drying process. The halogen-free compound flame retardant is blended with nylon 66, reinforced fibers, an antioxidant and the like, and the composite material is prepared through melt extrusion. According to the compound system, the total dosage of the flame retardant is remarkably reduced, the V-0 flame retardant grade is still achieved under the condition that the thickness is 0.8 mm, and the limit oxygen index exceeds 32%. The composite material has excellent flame retardancy and antistatic property while maintaining good mechanical properties, is suitable for a high glass fiber content system, effectively solves the problems of high flame retardant addition amount, difficult processing, high cost and the like in the prior art, and has the advantages of simple process and excellent comprehensive performance.

Belonging to the technical field of fireproof coatings, the invention relates to a building fire protection coating fireproof material, which is prepared from the following raw materials: 45-55 parts of acrylic emulsion, 20-25 parts of modified intumescent flame retardant, 5-8 parts of pigment filler, 3-5 parts of dispersant, 1-3 parts of defoaming agent and 20-30 parts of deionized water. According to the technical scheme, the flame-retardant material is obtained by combining the flame-retardant compound with the amino silane; the fireproof filler is coated with layered double hydroxides, so that a reinforcing material is obtained; a flame-retardant material is combined with a reinforcing material to obtain a modified intumescent flame retardant; and uniformly mixing the acrylic emulsion, the modified intumescent flame retardant, the pigment filler, the dispersing agent, the defoaming agent and the deionized water to finally obtain the building fire-fighting coating fireproof material. The modified intumescent flame retardant well improves the fireproof performance, the flame retardant performance and the impact resistance of the fireproof coating material, the environment-friendly performance is good, and the comprehensive performance of the building fire-fighting coating fireproof material is integrally improved.

The invention discloses a gradient ceramic intumescent fire retardant coating and a preparation method and application thereof, and relates to the technical field of fire retardant coatings, the gradient ceramic intumescent fire retardant coating comprises a film forming substance, 10-50% of a flame retardant, 20-50% of ceramic powder, 0-10% of reinforced fibers, and 0-10% of an auxiliary agent; the ceramic powder is composed of at least three kinds of glass powder with different melting temperatures, and the weight ratio of the first glass powder to the second glass powder to the third glass powder is (1-6): (1-6): (1-6), so that the coating can form a gradient ceramic expansion layer in a fire disaster. Compared with the prior art, the ceramic expansion layer disclosed by the invention does not generate the phenomena of molten drops, damage and the like at high temperature, and can provide long-time stable and reliable thermal protection for a metal substrate.

The present invention belongs to the field of polymer materials, and relates to a melamine cyanurate (MCA) coated aluminum diethylphosphinate (ADP) intumescent flame retardant thermoplastic polyurethane and a preparation method thereof. The present invention uses a molecular self-assembly technique to prepare the MCA@ADP flame retardant, and uses MCA@ADP as both the acid source and the gas source, and dipentaerythritol as the carbon source to form an intumescent flame retardant system; the melamine cyanurate coated aluminum diethylphosphinate intumescent flame retardant thermoplastic polyurethane composite material is prepared by melt blending. Adding MCA@ADP and dipentaerythritol is beneficial to the formation of a dense carbon layer after the combustion of the thermoplastic polyurethane composite material, improves the compatibility between the material and the flame retardant, improves the flame retardant performance of the material, and enhances the fire safety performance of the material.

The invention relates to the technical field of materials, and discloses a composite flame retardant as well as a preparation method and application thereof. Carrying out first reaction on the DOPO grafted silane coupling agent and capsaicin to obtain a first reaction product; and carrying out a second reaction on melamine, cyanuric acid and the first reaction product, and carrying out freeze drying and grinding on the obtained second reaction product to obtain the composite flame retardant. The composite flame retardant can be used for preparing a polypropylene composite material. According to the invention, ammonium polyphosphate, dipentaerythritol and a composite flame retardant are utilized to form a rat-bite-proof intumescent flame-retardant system, and the rat-bite-proof intumescent flame-retardant polypropylene composite material is prepared through melt blending; the oxygen index of the composite material can meet the flame-retardant requirement, the problem that molten drops severely drop during combustion is solved, meanwhile, the irritation influence of capsaicin in the material is reduced, and the polypropylene composite material is endowed with the non-toxic and non-lethal avoidance effect.

The invention relates to the technical field of cable materials, and particularly provides a composite flame-retardant cable material and a preparation method thereof, and the composite flame-retardant cable material comprises the following components: matrix resin: 50-70 parts of ethylene-vinyl acetate copolymer; a composite flame retardant system: 15 to 25 parts of ammonium polyphosphate / pentaerythritol and 5 to 10 parts of Mg / Al-LDH; and the synergistic smoke suppressant is 1-3 parts of a compound compounded by zinc borate and silicon dioxide according to the mass ratio of 1: 1. Through the synergistic effect of an ammonium polyphosphate / pentaerythritol intumescent flame retardant system and Mg / Al-LDH, a gas phase-condensed phase dual flame retardant mechanism is formed, and when the total addition amount of the flame retardant is smaller than or equal to 35%, the composite system can reach the UL-94 V-0 level, the limit oxygen index (LOI) is larger than or equal to 32%, and the composite system is remarkably superior to a traditional single flame retardant system.

The application provides a kind of fire-retardant heat-conducting polyacrylic acid fireproof paint and its preparation method, according to mass fraction includes the following raw materials: methyl methacrylate 3-24 parts, butyl acrylate 3-30 parts, acrylic acid 0.5-9 parts, intumescent monomer 2-15 parts, modified ceramic material 0.6-10 parts, composite emulsifier 0.6-3 parts, buffer 0.8-1.8 parts and initiator 0.2-1.5 parts;Intumescent monomer is obtained by the reaction of bio-based material, methyl methacrylate phosphate and melamine;The modified ceramic material is the ceramic material modified by silane coupling agent.The fire-retardant heat-conducting polyacrylic acid fireproof paint of the application has the advantages of simple formula, no environmental pollution, low toxicity, low VOC content, no irritating odor, etc.;High efficiency of flame retardancy, can quickly generate high-quality intumescent carbon layer after fire.

A fire-rated component for a fire-rated joint, such as a head-of-wall assembly, includes an elongate body having at least a first layer, which can be in the form of a polymer profile. A second layer can be or include a foil lining and a third layer can be or include an intumescent material. The elongate body, such as the first layer, defines an air gap. The foil lining and / or the intumescent material can be positioned within the air gap. A planar lower portion of the first layer of the elongate body is positioned between a header track and a wallboard in the fire-rated joint. A non-planar upper portion of the first layer of the elongate body is positioned at least partially within a deflection gap of the wall assembly and sealingly engages the ceiling.

The invention relates to the technical field of high polymer materials, and particularly discloses a B1-grade low-smoke halogen-free flame-retardant polyethylene cable material and an extrusion molding process thereof. The invention discloses a B1-grade low-smoke halogen-free flame-retardant polyethylene cable material. The cable material is prepared from the following raw material components in parts by weight: 50 to 70 parts of linear low-density polyethylene, 50 to 70 parts of ethylene-vinyl acetate copolymer, 40 to 60 parts of nanoscale magnesium hydroxide, 5 to 8 parts of microencapsulated red phosphorus, 10 to 15 parts of intumescent flame retardant, 3 to 5 parts of zinc borate and 2 to 4 parts of carbon nanotubes. According to the cable material, the ethylene-vinyl acetate copolymer can improve the dispersing performance of the inorganic filler, the composite flame retardant composed of the nanoscale magnesium hydroxide, the microencapsulated red phosphorus and the intumescent flame retardant is utilized, and the synergistic effect of the zinc borate and the carbon nanotubes is matched, so that the obtained cable material has better flame retardance, and the release of smoke is less.

An object is to provide polypropylene-based expanded particles that can give a polypropylene-based expanded molded product having excellent flame retardancy. The object is attained by polypropylene-based expanded particles obtained by expanding polypropylene-based resin particles, the polypropylene-based resin particles containing: a base resin containing a polypropylene-based resin (a) having a specific MI and a specific melting point and a polypropylene-based resin (b) having a specific MI and a specific melting point; and an intumescent-based flame retardant.

A self-closing vent has its frame and honeycomb screen coated with an intumescent material. When affixed to an external wall or eave of a building, the vent is normally open, allowing free flow of air into and out of the building, but when exposed to the heat of a fire, such as a wildfire, the intumescent material expands to close the vent, thereby preventing an external fire from entering the building. Enhancements include a weather-protective topcoat over the intumescent material, a fine mesh screen over the interior side of the honeycomb screen, and a protective set of louvers at the outside of the vent.

The invention provides a PVC (polyvinyl chloride) plate for a refrigerator back plate, which is prepared from the following raw materials: 50 to 75 parts of PVC resin, 5 to 20 parts of chlorinated polyvinyl chloride, 5 to 15 parts of phosphorus-nitrogen flame retardant, 5 to 20 parts of inorganic flame retardant, 3 to 10 parts of mica powder, 3 to 10 parts of plasticizer, 0.2 to 3 parts of heat stabilizer, 0.2 to 3 parts of lubricant, 0.2 to 3 parts of coupling agent, 0.3 to 3 parts of nucleating agent, 0.5 to 1 part of antioxidant and 2 to 10 parts of processing aid. The phosphorus-nitrogen flame retardant is one or a combination of melamine polyphosphate, ammonium polyphosphate and phosphazene flame retardants; the inorganic flame retardant is one or a combination of aluminum hydroxide, magnesium hydroxide and antimony trioxide. The composition of the flame retardant in the PVC board is regulated and controlled, and the flame retardant property of the refrigerator back board can be greatly improved by compounding the phosphorus-nitrogen intumescent flame retardant and the inorganic flame retardant, so that the flame retardant property of the refrigerator back board reaches the 5VA grade and meets the industrial standard.

The invention relates to the technical field of materials, and discloses a high-flame-retardancy low-smoke halogen-free cable sheath material and a preparation method thereof.The cable sheath material is prepared by taking a polyvinyl base material as a main raw material and taking a flexibilizer, a flame retardant and the like as auxiliary materials through mixing and extrusion processes; wherein the flame retardant is prepared by cross-linking galactomannan by using a triazine derivative containing a phosphorus flame-retardant element in the structure as a cross-linking agent, the galactomannan can be used as a carbon source, a triazine ring can be used as a nitrogen source, and the phosphorus flame retardant can be used as an acid source, so that a three-element integrated intumescent flame-retardant system can be formed, and the flame-retardant effect is good when combustion occurs. An expanded carbon layer can be rapidly formed on the surface of the sheath material, the expanded carbon layer can effectively isolate oxygen, heat and a fire source, then the flame retardant property of the sheath material is effectively improved, the aerogel structure has rich pores, smoke formed by combustion can be effectively absorbed, and the flame retardant property of the sheath material is improved. Therefore, low-smoke halogen-free modification of polyethylene is realized.

The invention belongs to the technical field of fireproof coatings, and particularly relates to a steel structure fireproof powder coating which comprises the following components in parts by weight: 40-60 parts of epoxy polyester resin, 20-35 parts of a composite intumescent flame-retardant system, 5-15 parts of a flame-retardant aid, 5-15 parts of functional filler, 0.5-2 parts of a flatting agent, 0.2-1 part of a defoaming agent and 5-10 parts of a curing agent, wherein the epoxy polyester resin comprises epoxy resin and polyester resin, and the composite intumescent flame-retardant system comprises an acid source, a gas source and a carbon source. According to the fireproof powder coating for the steel structure, the epoxy polyester resin is used as a base material, the composite intumescent flame-retardant system, the flame-retardant additive, the functional filler and the like are combined, and all the components have a synergistic effect, so that the coating has excellent fireproof heat-insulating performance and flame-retardant effect. When a fire disaster occurs, the composite intumescent flame-retardant system can rapidly expand to form a fluffy heat-insulating carbon foam layer, heat and oxygen are effectively isolated, and flame spreading is prevented; the flame-retardant auxiliary agent further enhances the flame-retardant effect through decomposition heat absorption and oxygen concentration dilution.

The invention relates to a low-smoke flame-retardant ethylene propylene diene monomer composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite material comprises the following components: 100 parts of raw ethylene propylene diene monomer rubber, 5-8 parts of a cycloolefin copolymer, 20-25 parts of a modified aluminum hydroxide-magnesium hydroxide flame retardant, 15-20 parts of a phosphorus-nitrogen intumescent flame retardant, 2-5 parts of a melamine modified graphene-layered bimetal hydroxide composite flame retardant and 3-10 parts of a vulcanization system, the vulcanization system comprises 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1-2 parts of an accelerant, 0.5-1.5 parts of sulfur and 1-5 parts of a processing aid. According to the invention, the raw rubber of the ethylene propylene diene monomer is compounded with a small amount of cycloolefin copolymer, so that the smoke formation tendency is reduced from the matrix level, and a ternary synergistic flame-retardant system consisting of the inorganic flame retardant, the phosphorus-nitrogen intumescent flame retardant and the nano composite flame retardant is matched, so that the composite material keeps good mechanical properties at the same time.

The invention provides a composite intumescent flame retardant modified polyamide composite material and a preparation method thereof. The flame-retardant nylon 66 and / or nylon 6 composite material is prepared from the following components in parts by weight: 75-85 parts of nylon 66 and / or nylon 6 matrix and 15-25 parts of composite intumescent flame retardant, wherein the composite intumescent flame retardant is prepared from the following components in parts by weight: 30-50 parts of a phytic acid derivative; 20 to 40 parts of melamine pyrophosphate (MPP); 5 to 15 parts of modified nanosheets; and 10-20 parts of a hydrogen bond cross-linking agent. According to the composite intumescent flame retardant modified polyamide composite material disclosed by the invention, the limit oxygen index and the fireproof grade can be remarkably improved under the condition that the addition amount of the composite intumescent flame retardant is low, and the mechanical property of the polyamide material is not influenced.

The invention discloses a halogen-free flame-retardant thermoplastic vulcanized elastomer and a preparation method thereof, and belongs to the technical field of thermoplastic vulcanized elastomer materials. The preparation method comprises the following steps: epoxidizing ethylene propylene diene monomer by using an oxygen source to obtain epoxy ethylene propylene diene monomer, and carrying out blending vulcanization reaction on the epoxy ethylene propylene diene monomer, polypropylene, paraffin oil, a modified intumescent flame retardant synergist, a charring agent, organic peroxide, an assistant crosslinker, a flame retardant, a dispersing agent and an antioxidant in a reaction type double-screw extruder, the halogen-free flame-retardant thermoplastic vulcanized elastomer disclosed by the invention is good in flame retardant property, and the mechanical property and the aging property of the halogen-free flame-retardant thermoplastic vulcanized elastomer are remarkably improved.

The invention discloses a sheath material for a high-flexibility robot cable, and the sheath material comprises the following components in parts by mass: 100 parts of polyvinyl chloride resin; 15-20 parts of nitrile rubber; 50 to 70 parts of trioctyl trimellitate; 6 to 10 parts of epoxidized soybean oil; 10 to 20 parts of gas phase method nanometer white carbon black; 5-10 parts of a composite stabilizer; 10 to 15 parts of an environment-friendly flame retardant Sb2O3; 5 to 10 parts of a phosphorus-nitrogen intumescent flame retardant; 5 to 10 parts of flame-retardant graphite; 0.3 to 0.5 part of an antioxidant; 0.3 to 0.5 part of an ultraviolet light absorber; 0.4 to 0.6 part of a light stabilizer; 0.4 to 0.6 part of PE (Poly Ethylene) wax; the invention has the following beneficial effects: nitrile butadiene rubber (NBR) and PVC are blended to form a sea-island phase structure, so the brittleness resistance, oil resistance and low temperature resistance of the material are significantly improved, and the material is suitable for high-frequency motion scenes of robots; the addition of the gas-phase nano white carbon black enhances the reinforcing effect, the tensile strength before aging reaches 2.52 kgf / cm < 2 >, and the elongation at break is 350%, which far exceeds the industrial standard.

The invention discloses a nitrogen-phosphorus intumescent flame retardant based on a hypophosphorous acid derivative and oligomerization Schiff base as well as a preparation method and application thereof, and relates to the technical field of macromolecular flame-retardant materials. The invention discloses a nitrogen-phosphorus intumescent flame retardant based on a hypophosphorous acid derivative and oligomeric Schiff base. The nitrogen-phosphorus intumescent flame retardant has a structure as shown in a general formula (I), wherein the Schiff base chain segment is an oligomerization Schiff base chain segment formed by condensation of aromatic polyamine and aromatic polyaldehyde and has a linear or hyperbranched structure, m, n and x are positive integers larger than 0, m + n is larger than or equal to 2 and smaller than or equal to 8, and x is larger than or equal to 2 and smaller than or equal to 30. According to the flame retardant provided by the invention, an oligomer structure and an introduced benzene ring structure have good compatibility with a polymer matrix and are not easy to migrate and separate out, so that long-acting flame retardance and mechanical properties of a material can be maintained, expensive DOPO is successfully replaced by hypophosphorous acid which is low in cost and easy to obtain, and a solid foundation is laid for large-scale industrial popularization and application.

A multi-layer intumescent coating system comprising an intumescent coating layer A and a non-intumescent coating layer B directly thereon wherein: (i) the coating layer A comprises or is formed from an intumescent coating composition comprising a) a binder; and (ii) the coating layer B comprises or is formed from a non-intumescent coating composition comprising a) a binder; and b) fibers.

To provide a flame-retardant coating composition that is excellent in cold resistance and swelling resistance, and can form a coating film that exhibits flame retardancy and heat insulation when heated, and to provide a refractory heat-insulating layer and a refractory heat-insulating sheet that are excellent in cold resistance and swelling resistance, and can form a coating film that exhibits flame retardancy and heat insulation when heated.SOLUTION: A flame-retardant coating composition has an acrylic resin emulsion, a urethane resin emulsion, an intumescent-based flame retardant, and a dispersant. An acryl resin that constitutes the acrylic resin emulsion has a glass transition temperature of -40°C or lower, and a urethane resin that constitutes the urethane resin emulsion has at least either of a carbonate bond and an ether bond. A ratio of the solid content mass of the acrylic resin emulsion to that of the urethane resin emulsion is 2:1 to 1:2. The refractory heat-insulating layer is formed from the flame-retardant coating composition. A refractory heat-insulating sheet comprises a refractory heat-insulating layer.SELECTED DRAWING: None

Materials comprising a protective coating for thermal protection are disclosed herein. The protective coating is comprised of a sacrificial layer, sacrificial component, or an intumescent layer organized in diverse geometries bioinspired from the thermal resistant structures in pyrophytic plants from the Banksia genus. The protective coating can be applied to various substrates and used for thermal management, water rescue, or crash safety.

The invention discloses a preparation method of a water-resistant and melting-resistant sodium silicate-based fireproof coating, and belongs to the technical field of preparation of fireproof materials and inorganic-organic hybrid coatings. The method comprises the following steps: (1) reacting isophorone diisocyanate with polypropylene glycol to prepare an isocyanate-terminated polyurethane prepolymer; (2) mixing the polyurethane prepolymer with piperazine pyrophosphate to obtain a component A; (3) mixing a sodium silicate aqueous solution with melamine to obtain a component B; and (4) mixing and curing the component A and the component B in proportion to obtain the coating. According to the invention, an isocyanate group in a polyurethane prepolymer and a sodium silicate aqueous solution are subjected to an in-situ chemical reaction, an organic hydrophobic network is constructed on the surface of an inorganic phase, and the water resistance of the coating is remarkably improved. Meanwhile, piperazine pyrophosphate and melamine form an intumescent flame-retardant system, the intumescent flame-retardant system and sodium silicate are synergistically promoted to form a compact and stable intumescent layer at high temperature, and the problems that a traditional water glass coating easily absorbs moisture and melts and flows at high temperature are effectively solved. The method is simple and controllable in process, and the prepared coating has excellent water resistance, fire resistance and heat insulation performance.

The invention provides a water-based single-component modified epoxy intumescent fireproof coating, which is prepared from the following substances in percentage by mass: 13 to 17 percent of deionized water, 1 to 3 percent of polyamide wax slurry, 0.5 to 2 percent of dispersing agent, 0.2 to 0.4 percent of defoaming agent, 7 to 9 percent of titanium dioxide, 3 to 5 percent of filler, 22 to 26 percent of flame-retardant catalyst, 8 to 10 percent of charring agent, 10 to 14 percent of foaming agent and 20 to 24 percent of modified epoxy resin. And 0.1-0.2% of a bactericide. Due to the water-based formula, VOC is basically not released, so that compared with an intumescent epoxy fireproof coating in the prior art, the intumescent epoxy fireproof coating is excellent in environment-friendly performance.