78 results about "Polyvinylidene chloride" patented technology

The invention discloses a high-barrier polycrystalline silicon packaging film and a preparation method thereof, and relates to the technical field of packaging materials. The high-barrier polycrystalline silicon packaging film consists of a polyester film carrier and functional slurry, the functional slurry is prepared from the following raw materials in parts by weight: 15 to 25 parts of ethylene-vinyl alcohol copolymer, 10 to 18 parts of polyvinylidene chloride, 5 to 10 parts of modified nano montmorillonite, 8 to 15 parts of modified polylactic acid, 3 to 6 parts of tributyl citrate, 1 to 3 parts of antioxidant 1010, 1 to 3 parts of ultraviolet light absorber UV-531, 0.5 to 1.5 parts of nucleating agent NA-11, 1 to 2 parts of silane coupling agent KH-550 and 3 to 7 parts of modified silicon dioxide aerogel; 2 to 5 parts of vinyl trimethoxy silane, 1 to 3 parts of nano silver and 20 to 30 parts of deionized water. The high-barrier polycrystalline silicon packaging film has excellent barrier performance, and can effectively block oxygen, water vapor and the like. The polycrystalline silicon packaging film is good in mechanical performance, not prone to damage, antibacterial, antioxidant and anti-ultraviolet, the quality guarantee period of polycrystalline silicon can be prolonged, the product quality can be guaranteed, and the polycrystalline silicon packaging film has great application value in the field of polycrystalline silicon packaging.

The invention discloses a mineral-based easily-recyclable compostable water-based barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating takes water as a carrier, and is composed of a biodegradable film forming system and a designed graded lamellar mineral system composed of three minerals with different sizes and morphologies. The mineral system comprises flaky kaolin with specific morphology and size, non-asbestos grade flaky talc and fully stripped sodium montmorillonite. A mineral sheet layer forms a compact parallel spreading barrier path in a coating through a specific coating and drying curing process, and excellent water vapor and oxygen barrier, water resistance and oil resistance are realized under the low dry weight of 8-15g / m by combining with a pH value response type reversible cross-linking system. The coating system does not contain polyvinylidene chloride and perfluoroalkyl and polyfluoroalkyl substances. The paper-based material coated with the coating is easy to defibrillate and recover under the standard alkaline warm water condition, the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirement.

The invention relates to the technical field of packaging materials, and discloses a high-barrier multilayer co-extrusion composite film which sequentially comprises an inner layer, a first bonding layer, a first barrier layer, a second bonding layer, a second barrier layer, a third bonding layer and an outer layer from bottom to top. And the second barrier layer is a nano silicon dioxide modified polyvinyl alcohol layer. The two different barrier layers are arranged, the first barrier layer has a good barrier effect on gas, the second barrier layer has outstanding barrier performance on water vapor, and the two barrier layers have a synergistic effect, so that the comprehensive barrier performance of the composite film on oxygen, water vapor, peculiar smell and the like is remarkably improved, the shelf life of a packaged product can be effectively prolonged, and the packaging cost is reduced. According to the high-barrier film, the high-barrier property is ensured, the quality and the performance of a product are ensured, and the use of expensive materials and a complex production process is avoided and the production cost is reduced by reasonably selecting each layer of material and optimizing the structural design on the premise of ensuring the high-barrier property.

The invention relates to the field of high polymer materials, and particularly discloses a high-oxygen-barrier moisture-barrier PE film and a process. The high-oxygen-barrier moisture-barrier PE film comprises a corona layer, a barrier layer and a heat sealing layer which are connected in sequence, the barrier layer comprises the following raw materials in parts by weight: 90-95 parts of polyethylene and 5-10 parts of polyvinylidene chloride, and the heat sealing layer is made of a polyethylene material; in addition, the preparation method provided by the invention has the advantages that the oxygen and moisture resistance of the polyethylene single film is improved, and meanwhile, the printing requirement is met.

The invention discloses an infrared barrier PVB (polyvinyl butyral) intermediate film and a preparation method, and relates to the technical field of environmental functional glass materials, the intermediate film comprises 60-75 parts of polyvinyl butyral resin, 25-35 parts of a plasticizer, 0.5-3 parts of nano tin antimony oxide, 0.1-0.5 part of an ultraviolet absorbent, 0.05-0.2 part of an antioxidant and 0.1-0.5 part of a dispersant, the preparation method comprises the steps of nano infrared blocking agent pre-dispersion, mixing, twin-screw extrusion molding, tape casting cooling, surface treatment and the like, the surface-modified nano tin antimony oxide is introduced as the infrared blocking agent, infrared radiation at the wave band of 780-1300 nm is effectively blocked, the infrared blocking rate reaches 85% or above, the visible light transmittance is larger than 80%, the technology is mature and stable, the cost is low, and the preparation method is suitable for industrial production. The prepared intermediate film can be applied to building and automobile laminated glass, and the heat insulation and energy saving effects are achieved.

The application discloses a mineral-based easily-recyclable compostable water-barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating is formed by a biodegradable film-forming system and a hierarchical lamellar mineral system containing three different scales and morphologies. The mineral system contains specific morphology and size of lamellar kaolin, non-asbestos grade lamellar talc and fully exfoliated sodium montmorillonite. The mineral lamella forms a dense parallel spread barrier path in the coating through a specific coating and drying solidification process, and combines a pH value responsive reversible cross-linking system to achieve excellent water vapor and oxygen barrier properties, water resistance and oil resistance at a low dry weight of 8-15 g / m2. The coating system does not contain polyvinylidene chloride and perfluoro and polyfluoro alkyl substances. The paper-based material coated with the coating is easily defibered and recycled under standard alkaline warm water conditions, and the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirements.

The invention provides a polyvinylidene chloride resin emulsion with excellent barrier property as well as a preparation method and application thereof. A barrier property accelerant is added in the preparation method, and the preparation method comprises the following steps: preparing a monomer pre-emulsion: mixing and stirring vinylidene chloride, a comonomer, an emulsifier and water to obtain the monomer pre-emulsion; seed emulsion polymerization: mixing a seed monomer, a seed emulsifier and water, adding an initiator, and reacting to obtain a seed emulsion; polymerizing polyvinylidene chloride emulsion: adding the monomer pre-emulsion into the seed emulsion, and adding an initiator; and after the monomer pre-emulsion is added, adding a barrier property accelerant, mixing and filtering to obtain a target product. The invention also provides a polyvinylidene chloride emulsion and an accelerant. A composite hard sheet prepared by coating a PVC hard sheet with the polyvinylidene chloride water-based emulsion has excellent barrier property and can be used in the fields of medicine, food packaging and the like.

The invention discloses a high-barrier polycrystalline silicon packaging film and a preparation method thereof, and relates to the technical field of packaging materials. The invention discloses a high-barrier polycrystalline silicon packaging film. The composite material is prepared from the following raw materials in parts by weight: 15 to 25 parts of ethylene-vinyl alcohol copolymer, 10 to 18 parts of polyvinylidene chloride, 5 to 10 parts of nano montmorillonite, 8 to 15 parts of modified polylactic acid, 3 to 6 parts of tributyl citrate, 1 to 3 parts of antioxidant 1010, 1 to 3 parts of ultraviolet light absorber UV-531, 0.5 to 1.5 parts of nucleating agent NA-11, 1 to 2 parts of silane coupling agent KH-550 and 3 to 7 parts of modified silicon dioxide aerogel. 2 to 5 parts of vinyl trimethoxy silane, 1 to 3 parts of nano silver and 20 to 30 parts of deionized water. The high-barrier polycrystalline silicon packaging film provided by the invention has remarkable advantages and scientific raw material ratio, is prepared by a special process, has excellent barrier performance, and can effectively block oxygen, water vapor and the like. The polycrystalline silicon packaging film is good in mechanical performance, not prone to damage, antibacterial, antioxidant and anti-ultraviolet, the quality guarantee period of polycrystalline silicon can be prolonged, the product quality can be guaranteed, and the polycrystalline silicon packaging film has great application value in the field of polycrystalline silicon packaging.

The present invention provides a sound insulation coating, a preparation method thereof and a sound insulation coating. The sound insulation coating of the present invention comprises a styrene-acrylic emulsion, an inorganic filler, an organic sound insulation filler, a porous drying accelerating filler and a drainage drying accelerating fiber, and the organic sound insulation filler comprises at least one of acrylonitrile-butadiene rubber powder, ethylene-propylene rubber powder, polyurethane powder, acrylonitrile foamed microspheres, polyvinylidene chloride foamed microspheres and acrylate foamed microspheres. The present invention also provides a preparation method of the sound insulation coating and a sound insulation coating.

To provide a surface processing method that can process a target surface of high hardness while preventing abrasive grains or the like from remaining on the target surface.SOLUTION: A surface processing method for a surface including a target surface 101-s as a metal surface, comprises a step of spraying abrasive grains 105 onto a second surface 103-s2 of a resin film 103, the second surface 103-s2 being opposite to a first surface of the resin film 103 that is disposed in contact with the target surface 101-s and faces the target surface 101-s, thereby imparting an impact force to the resin film 103, and transmitting the impact force to the target surface 101-s via the resin film 103 to process the target surface 101-s covered with the resin film 103, wherein the resin film 103 has a thickness of 4.0-13.0 μm, contains at least one resin selected from the group consisting of polyethylene terephthalate, polyimide, and polyvinylidene chloride, and the abrasive grains 105 are spherical particles having an average particle diameter equal to or greater than the thickness of the resin film 103.SELECTED DRAWING: Figure 2

The invention relates to a water-based quick-drying fireproof coating and a preparation method thereof. The water-based quick-drying fireproof coating comprises polyacrylic resin, a water-based polyvinylidene chloride (PVDC) emulsion, a flame retardant, reinforced fibers, a pigment filler, an early strength agent, a corrosion inhibitor, an auxiliary agent, a drier and water. The fireproof coating disclosed by the invention is high in drying rate, high in bonding strength and environment-friendly, and can be rapidly expanded to form a fireproof heat-insulating protective layer when a fire disaster occurs, so that the fire endurance of a steel structure is improved, and the situation that a building collapses due to the fact that the steel structure loses supporting force is avoided; and meanwhile, the composite material has excellent corrosion resistance, weather resistance and vibration fatigue resistance.

The utility model discloses a high-performance aluminum plastic film which sequentially comprises a heat-sealing layer, an aluminum foil layer and a protective layer from inside to outside, a heat-resisting layer is arranged between the heat-sealing layer and the aluminum foil layer, an insulating layer is arranged between the aluminum foil layer and the protective layer, the heat-sealing layer is a casting polypropylene layer, the heat-resisting layer is a polyimide layer, and the insulating layer is a polyimide layer. The isolation layer is a polyvinylidene chloride layer, and the protection layer is a biaxially oriented polyester layer. The polyimide layer is additionally arranged between the casting polypropylene layer and the aluminum foil layer, so that the high-temperature-resistant requirement of the aluminum-plastic film is met by utilizing the high-temperature-resistant performance of polyimide, and the polyvinylidene chloride layer is additionally arranged between the aluminum foil layer and the protective layer, so that the isolation performance of the aluminum-plastic film is improved, and the service life of the aluminum-plastic film is prolonged. The outer protective layer is changed from nylon to biaxially oriented polyester, so that the chemical stability of the aluminum-plastic film is enhanced.

The invention discloses a production method of a PA / PE high-barrier composite film bag. The composite film bag comprises an outer layer, a middle layer and an inner layer, the outer layer is prepared from PA6, glass fibers, maleic anhydride grafted polyethylene, an antioxidant, a slipping agent, an ultraviolet light absorber, titanium dioxide, nano silicon dioxide and polyimide; the middle layer is prepared from EVOH (Ethylene Vinyl Alcohol), polyamide-imide, nano montmorillonite, maleic anhydride grafted polypropylene, an antioxidant, a slipping agent, terpene resin, polyvinylidene chloride and polybutylene terephthalate; the inner layer is prepared from HDPE, LLDPE, mPE, an antistatic agent, silicon dioxide, dioctyl phthalate, an antibacterial agent and polylactic acid. The composite film bag prepared by the invention not only has high barrier property and good strength, but also has various functions.

To provide a laminated film having improved oxygen barrier properties.SOLUTION: There is provided a laminated film which comprises a base material layer containing a high density polyethylene, a cured product layer of a mixture containing a polycarboxylic acid-based resin, a polyamine-based resin and a polyvalent metal compound and a barrier resin layer containing one or two or more selected from the group consisting of polyvinylidene chloride resin-based layers.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of quantum dot display and polymer composite materials, and particularly discloses a PVDC-based composite material, a preparation method and a quantum dot diffusion plate comprising the PVDC-based composite material. Polyvinylidene chloride (PVDC) resin, general purpose polystyrene (PS), polycarbonate (PC), CdSe quantum dots, styrene-maleic anhydride copolymer SMA, methyl methacrylate-glycidyl methacrylate copolymer PMMA-co-GMA, an antioxidant and a nano diffusant are used as raw materials, and the composite material is prepared through a multi-layer co-extrusion technology. According to the invention, a symmetric barrier layer is formed by PVDC resin, water and oxygen erosion is effectively isolated, strong interface bonding is formed by utilizing the interaction of anhydride groups of SMA and chlorine atoms of PVDC and the reaction of epoxy groups of PMMA-co-GMA and PC end groups, and efficient light conversion and uniform diffusion are realized through the synergistic optical effect of quantum dots and a diffusant.

The invention relates to the technical field of nano optical materials, in particular to a quantum dot-multi-component composite particle, a quantum dot diffusion plate and a preparation method, and the quantum dot-multi-component composite particle comprises an original quantum dot particle serving as a core, an antioxidant ligand layer coating the surface of the original quantum dot particle, and a quantum dot dispersion layer coating the surface of the original quantum dot particle. The surface of the antioxidant ligand layer is coated with the ternary polymer barrier layer; and the ternary polymer barrier layer contains an ethylene-vinyl alcohol copolymer, polyvinylidene chloride and polystyrene. An antioxidant is directly coordinated on the surfaces of the quantum dots to form an antioxidant ligand layer, so that targeted protection of the quantum dots is realized; the ternary polymer barrier layer is adopted to coat the original quantum dot particles coated with the antioxidant ligand layer, so that the ethylene-vinyl alcohol copolymer plays a role in oxygen isolation, the polyvinylidene chloride plays a role in water resistance, and the polystyrene can improve the compatibility, thereby improving the water and oxygen resistance of the quantum dot-multi-component composite particles and improving the water and oxygen resistance of the quantum dot-multi-component composite particles. Meanwhile, the compatibility of the nanoparticles and polystyrene is improved.

The invention relates to the field of lithium ion batteries, in particular to a lithium iron manganese phosphate positive electrode material as well as a preparation method and application thereof, and aims to solve the problems of low electrochemical performance, poor charge-discharge efficiency and short cycle life of an existing lithium iron manganese phosphate positive electrode material. The lithium manganese iron phosphate positive electrode material is prepared from silver-doped lithium manganese iron phosphate positive electrode material powder, conductive carbon black and polyvinylidene chloride; wherein divalent silver ions are doped in the silver-doped lithium iron manganese phosphate positive electrode material powder, and the interior and the surface of the silver-doped lithium iron manganese phosphate positive electrode material powder are coated with a three-dimensional interconnected conductive carbon network, so that the lithium iron manganese phosphate positive electrode material has the advantages of excellent electrochemical performance, high charge-discharge efficiency, long cycle life and the like, and can meet the requirements of high-performance lithium ion batteries.

The application relates to the field of high polymer materials, and particularly discloses a high-oxygen-resistance and high-moisture-resistance PE film and a process. The high-oxygen-resistance and high-moisture-resistance PE film comprises a corona layer, a barrier layer and a heat-sealing layer which are sequentially connected, the barrier layer comprises the following raw materials in parts by weight: 90-95 parts of polyethylene and 5-10 parts of polyvinylidene chloride, and the heat-sealing layer is made of polyethylene material; in addition, the preparation method has the advantages that the oxygen-resistance and moisture-resistance performance of the polyethylene single film is improved, and the printing requirement is met.

The application discloses a kind of water-based intumescent steel structure fire-retardant coating, including A component and B component, mass ratio is 15:1-20:1;With mass parts, A component includes 20-40 parts of acrylic acid salt, 0-10 parts of water-based polyvinylidene chloride (PVDC) emulsion, 35-75 parts of intumescent flame retardant, 0.5-2 parts of organic alkali, 0.2-2 parts of reinforcing fiber, 5-20 parts of filler, 2-10 parts of auxiliary agent and 10-30 parts of water;With mass parts, B component includes 1-5 parts of curing accelerator and 5-20 parts of water.The application further provides the preparation method of the water-based intumescent steel structure fire-retardant coating and its construction technology.The fire-retardant coating of the application is environmentally friendly, can rapidly expand to form fire-resistant and heat-insulating protective layer when fire occurs, improve the fire resistance limit of steel structure, avoid building collapse caused by loss of support force of steel structure;Meanwhile, it has excellent corrosion resistance, weather resistance and vibration fatigue resistance.

The invention belongs to the technical field of membrane materials, and discloses a high-barrier-property flexible fabric membrane material and a preparation method thereof. The high-barrier-property flexible fabric membrane material sequentially comprises a flexible base cloth layer, a first bonding layer, a first barrier layer, a second bonding layer and a second barrier layer from bottom to top, the preparation process of the first barrier layer comprises the following steps: mixing water-based hydroxy acrylic resin, an ethylene-vinyl alcohol copolymer, a modified filler, an auxiliary agent and a solvent to obtain first slurry, then coating one surface of the first bonding layer with the first slurry, and drying to obtain the first barrier layer; the preparation process of the second barrier layer comprises the following steps: mixing water-based hydroxy acrylic resin, polyvinylidene chloride, a modified filler, an auxiliary agent and a solvent to obtain second barrier slurry, then coating one surface of the second bonding layer with the second barrier slurry, and drying to obtain the second barrier layer. The high-barrier-property flexible fabric membrane material has good barrier property to oxygen and water vapor, and also has good flexibility, so that the high-barrier-property flexible fabric membrane material has wide application.

The invention provides a light photovoltaic module with heat insulation and noise reduction functions and a preparation method thereof, and relates to the technical field of photovoltaic modules. The light photovoltaic module structure comprises a front plate, a packaging layer, a photovoltaic battery piece, a micro-cavity composite layer and a back plate, the microcavity composite layer comprises the following components: aerogel particles, polymer foaming microspheres and a thermosetting resin matrix; the porosity of the aerogel particles is 85%-99%, and the particle size of the polymer foaming microspheres is 3-30 [mu] m; the polymer foaming microspheres are thermoplastic polymer microspheres and are selected from at least one of polymethyl methacrylate, polyacrylonitrile and polyvinylidene chloride. According to the light-heat-sound multifunctional integrated light photovoltaic module and the preparation method thereof, the defects that an existing light photovoltaic module is single in function and cannot meet the heat insulation and sound insulation requirements of a building envelope structure are overcome, and the light-heat-sound multifunctional integrated light photovoltaic module integrating the power generation function, the heat insulation function and the noise reduction function and the preparation method of the light-heat-sound multifunctional integrated light photovoltaic module are provided.

In one aspect, the disclosure relates to a method for supplementing syngas to produce a precursor composition for synthesis of at least one industrially useful chemical, the method comprising contacting the syngas with an external source of hydrogen. In an aspect, industrially useful chemical comprises methanol and the external source of hydrogen comprises hydrogen produced by steam methane reforming (SMR), hydrogen produced by steam injected onto molten metals, or another hydrogen source. In some aspects, the external source of hydrogen comprises hydrogen produced by a halogen acid contacting scrap metal, wherein the halogen acid can be produced by gasifying a halogen-containing polymer such as, for example, polyvinylchloride (PVC), polyvinylidene chloride (PVDC), or any combination thereof. Also disclosed herein are systems useful for carrying out the disclosed methods.

The invention relates to a photovoltaic module and a preparation method thereof. The photovoltaic module comprises a packaging panel, a first packaging adhesive film, a battery piece, a second packaging adhesive film and a packaging back plate which are arranged in a stacked mode. The photovoltaic module further comprises a first blocking layer and / or a second blocking layer, the first blocking layer is arranged between the packaging panel and the first packaging adhesive film, and the second blocking layer is arranged between the second packaging adhesive film and the packaging backboard. The barrier layer comprises a polymer matrix and barrier reinforced particles, the polymer matrix is selected from at least one of polyvinylidene fluoride, polytetrafluoroethylene and polyvinylidene chloride, and the barrier reinforced particles are selected from at least one of nano aluminum oxide, nano titanium dioxide and nano silicon dioxide. Through the arrangement of the barrier layer, the photovoltaic module has good salt spray corrosion resistance.

The invention belongs to the technical field of numerical control valves, and discloses a numerical control machining method for a polyvinylidene chloride soft sealing valve. The numerical control machining method comprises the steps that (1) three-dimensional scanning data of the surface of a rubber ring is obtained, a high-resolution point cloud model is generated, geometric parameters of local folds and a high-curvature area are extracted according to non-uniform curvature features, and initial surface feature distribution is obtained; (2) according to the initial surface feature distribution, generating a multi-scale grid structure by adopting a self-adaptive grid division algorithm, increasing the grid density in a complex area to cover wrinkles and high-curvature parts, reducing the density in a flat area to reduce the calculated amount, and determining an initial point location layout; and (3) spraying polyvinylidene chloride on the rubber ring according to the point position layout obtained in the step (2). The soft sealing valve has the advantage that the performance bottleneck problem of a traditional soft sealing valve in a high-temperature environment is solved.

The present invention relates to a polyvinylidene chloride (PVDC)-based composite and a method for preparing the same, and the PVDC-based composite comprises: a core comprising a PVDC-based polymer, and a shell surrounding the core and comprising wax, wherein the wax is nano-sized particles.

A method of making a self-supporting carbon molecular sieve (CMS) membrane may include: forming a polyvinylidene chloride (PVDC) copolymer into one or more hollow fiber or microcapillary membranes; pretreating the one or more hollow fibers or the microcapillary membrane by heating with air, an inert gas, or both at a first temperature of 120 DEG C to 200 DEG C; pyrolyzing the one or more hollow fibers or the microcapillary membrane with the inert gas at a second temperature of 600 DEG C to 1100 DEG C; and oxidizing the one or more hollow fibers or the microcapillary membrane with air at a third temperature of 300 DEG C to 500 DEG C.

A method of making a carbon molecular sieve (CMS) membrane may include forming a copolymer selected from one or more of a polyvinylidene chloride (PVDC) copolymer, a polyimide copolymer, a polyetherimide copolymer, a polyacrylonitrile copolymer, and a polyphenylene ether copolymer into one or more hollow fibers or one or more microcapillary membranes; pyrolyzing the one or more hollow fibers or the one or more microcapillary membranes with an inert gas or under vacuum at a second temperature of 600 DEG C to 700 DEG C; annealing the one or more hollow fibers or the one or more microcapillary films with an inert gas or under vacuum at a third temperature of 900 DEG C to 1500 DEG C; the one or more hollow fibers or the one or more microcapillary membranes are oxidized with carbon dioxide at a fourth temperature of 700 DEG C to 900 DEG C.

This invention relates to an aramid rope conveyor belt and its preparation method, belonging to the field of conveyor belt manufacturing technology. The aramid rope conveyor belt, by mass fraction, comprises: a composite coating, an aramid rope core layer, and an elastic buffer layer; the aramid rope core layer comprises modified aramid fibers; the elastic buffer layer, by mass fraction, comprises high-saturation nitrile rubber, carbon black, peroxide, and plasticizer; the composite coating, by mass fraction, comprises, from the outside to the inside, a hydrophobic wear-resistant layer, a barrier layer, and a filler layer; the hydrophobic wear-resistant layer comprises modified polyurethane, nano-ZnO, zinc stearate, titanate coupling agent, and defoamer; the barrier layer comprises fluororubber, polyvinylidene chloride, and nano-montmorillonite; and the filler layer comprises polytetrafluoroethylene nano-dispersion, nano-graphene, and silane coupling agent. The aramid rope conveyor belt of this invention can adapt to high-humidity and high-salt-spray environments such as ports, extending the service life of the conveyor belt.

The present application relates to a kind of anticorrosive thermal insulation powder coating and thermal insulation pipeline, belong to the technical field of coating.A kind of anticorrosive thermal insulation powder coating, including primer, intermediate layer coating and surface layer coating;Primer includes the following raw materials: bisphenol A type epoxy resin, curing agent, accelerator, thermoplastic elastomer, silicone resin, coupling agent, filler, leveling agent, defoaming agent;Intermediate layer coating includes the raw material: maleic anhydride grafted polypropylene resin, aerogel powder, hollow ceramic microsphere, foaming agent, thermoplastic elastomer, silicone resin, antioxidant;Surface layer coating includes the following raw materials: polyvinylidene chloride resin, heat stabilizer, maleic anhydride grafted polypropylene resin, pigment and filler, antioxidant.The problem of penetration accelerated corrosion of the inner wall of thermal insulation pipe when conveying high-temperature water is solved in the form of three-layer structure.