95 results about "Polyurethane coating" patented technology

This invention relates to an aqueous polyurethane composition comprising: a liquid medium comprising at least one organic liquid having a solubility in water of ≥4 g organic liquid / 100 g water at 25°C, and water; at least one polyurethane polymer compound dispersed in the liquid medium; and optionally at least one coating formulation component. The polyurethane composition further comprises at least one thickener comprising at least one anionic polymer selected from anionic polyacrylamide, anionic polymethacrylamide, anionic polyacrylamide-polymethacrylamide, and / or a mixture of at least two thereof, and optionally, 0 to 0.12% by weight, preferably 0 to 0.05% by weight, more preferably 0 to 0.01% by weight, based on 100% of the total weight of the aqueous polyurethane composition, at least one compound selected from unbound or ionicly bound organic amines, ammonia, or a mixture of at least two thereof, wherein the aqueous polyurethane composition has a pH value ≤ 8.5, and wherein the at least one thickener is different from the at least one coating formulation component and the at least one polyurethane polymer. The present invention further relates to a kit-of-parts for preparing a waterborne polyurethane composition, a method for preparing a waterborne polyurethane composition, and the use of the waterborne composition.

The present application relates to the technical field of coating compositions, and discloses a Janus structure marine antifouling and anticorrosion polyurethane coating and a preparation method thereof, the preparation method of the Janus structure marine antifouling and anticorrosion polyurethane coating comprises the following steps: preparing an amphoteric ionic functional monomer; taking a functional glycol, a diisocyanate, an organic bismuth catalyst, the amphoteric ionic functional monomer and a pyridine functional monomer as raw materials, reacting to obtain a functional polyurethane slurry; coating the functional polyurethane slurry on the surface of a metal substrate, curing, and immersing in artificial simulated seawater to obtain the Janus structure marine antifouling and anticorrosion polyurethane coating; the coating has the characteristics of simple preparation, stable properties and multifunctional integration, and can be adapted to various metal substrates.

The utility model discloses a kind of high resilience modified EVA soles, including sole body and modification structure;The utility model sole body inside lower end is filled with support, support adopts TPU (thermoplastic polyurethane), with moderate hardness can be sole body to promote support effect, sole body inside upper end is filled with high elastic body, high elastic body adopts PEBAX (high-performance thermoplastic elastomer), with super light, high resilience, low temperature resistance and other characteristics, so that sole body has the effect of high resilience, support surface is provided with bottom pad bottom pad adopts rubber material, rubber material has wear resistance, antiskid effect, and bottom pad surface is coated with coating, coating adopts polyurethane coating, with super wear resistance and chemical resistance effect, improve wear resistance.

This disclosure describes a one-component, low-gloss polyurethane powder coating composition comprising 90 to 100 wt% of a resin system comprising a thermoset resin, an isocyanate curing agent for reacting with the thermoset resin, and a polycarbonate diol, wherein: the thermoset resin comprises a first hydroxyl-functional polyester resin (i) having a hydroxyl value of between 200 and 250 mgKOH / g and a second hydroxyl-functional polyester resin (ii) having a hydroxyl value of between 20 and 40 mgKOH / g, the weight ratio of (i):(ii) ranging from 15:85 to 35:65, the isocyanate curing agent comprising at least one unblocked urethdione curing agent, the ratio of isocyanate groups of the curing agent to the hydroxyl group of the thermoset resin ranging from 0.8 to 1.2, and the total weight % of the The polycarbonate diol in the coating composition varies from 1 to 10% by weight,based on the total weight of the coating composition.

This utility model discloses a composite-coated anti-corrosion steel pipe, belonging to the field of steel pipe anti-corrosion technology. It includes a steel pipe body, with a first composite coating on the inner wall and a second composite coating on the outer wall. The first composite coating comprises, in sequence, an epoxy primer layer, a graphene-modified epoxy resin coating, and a polyurethane coating. The second composite coating comprises, in sequence, an epoxy resin underlayer, a polyolefin adhesive transition layer, and a modified polyurethane toplayer. This utility model, through differentiated coating design on the inner and outer walls, addresses the issues of media corrosion and erosion on the inner wall, while the outer wall addresses soil stress and environmental aging. Combined with a coupling agent layer and anti-corrosion sealing bosses, it eliminates weak points at the coating interface and connection areas, achieving multi-dimensional improvements in corrosion resistance, wear resistance, weather resistance, and mechanical properties, providing an efficient solution for pipeline engineering in harsh service environments.

The application discloses a sleeve type charging roller, which comprises, from inside to outside, a metal core, a buffer conductive layer, an elastic conductive layer, a protective sleeve layer and a surface conductive coating layer; each layer adopts a sleeve type nesting structure, and adjacent two layers are fixedly connected through a conductive adhesive; the sleeve type charging roller adopts a double protection structure of the protective sleeve layer and the surface conductive coating layer; the protective sleeve layer is made of a three-element ethylene-propylene rubber material which is resistant to cracking and wear; the surface conductive coating layer is made of a solidified conductive water-soluble polyurethane coating; and the elastic conductive layer is added with an anti-cracking agent; thus, the technical defect that the surface of the existing charging roller is prone to cracking is effectively solved; even under long-term use, external force collision or high-temperature environment, the charging roller is not prone to cracking, damage and falling-off, and the service life of the charging roller is prolonged.

This utility model discloses a lightweight coated grille, relating to the field of automotive grille technology. It includes a metal mesh substrate, with a composite coating applied to the outer side of the metal mesh substrate. The composite coating is sequentially configured as a primer layer, a core layer, a transition layer, and a top layer. The primer layer comprises a conversion layer and a protective layer, with the inner side of the conversion layer and the outer side of the protective layer contacting the outer side of the metal mesh substrate and the inner side of the core layer, respectively. The conversion layer is a nano-zirconium-based conversion agent coating, the protective layer is a graphene-containing epoxy zinc-rich primer coating, and the core layer is a hollow ceramic microparticle-modified polyurethane coating. The outer side of the core layer contacts the inner side of the transition layer, and the outer side of the transition layer contacts the inner side of the top layer. This lightweight coated grille, based on an aluminum / magnesium alloy substrate and a multi-layer synergistic coating design, achieves comprehensive performance improvements in long-term corrosion resistance, environmental tolerance, thermal and acoustic management, and surface self-maintenance while maintaining extreme lightweight properties.

This invention belongs to the field of coatings and proposes a solvent-free coating and its preparation method. The raw materials include component A and component B in a mass ratio of 1:1. By mass parts, component A comprises: 45-60 parts polyester polyol, 25-35 parts polyether polyol, 6-10 parts polyaspartic acid ester resin, 2-3 parts epoxy resin, 6-8 parts titanium dioxide, 2-5 parts mica powder, 0.3-1 parts dispersant, 0.3-1 parts dehydrating agent, 0.6-1.3 parts catalyst, and 2-3 parts coupling agent. Component B consists of hexamethylene diisocyanate-based biuret polyisocyanate and dicyclohexylmethane diisocyanate in a mass ratio of 1.5-2:1. This polyurethane coating exhibits good aging resistance, no solvent evaporation, and is environmentally friendly.

This utility model discloses a water-based, skin-friendly, regenerated eco-leather, comprising a composite regenerated leather layer and a skin-friendly fabric layer; the side of the regenerated leather layer away from the skin-friendly fabric layer is coated with a water-based polyurethane coating; the regenerated leather layer includes a needle-punched composite microfiber layer, a core-sheath polyester fiber layer, and a regenerated cowhide fiber layer; the core-sheath polyester fiber used in the core-sheath polyester fiber layer includes a leather layer and a core layer; the leather layer is LPET, and the core layer is PET. In this water-based, skin-friendly, regenerated eco-leather, the core-sheath polyester fibers in the regenerated leather layer penetrate into the regenerated cowhide fiber layer and the microfiber layer due to needle punching. The low-melting-point polyester in the leather layer bonds with the regenerated cowhide fibers after heating, thereby improving the bonding strength between the regenerated leather layer and the microfiber layer. Furthermore, the skin-friendly fabric layer enhances the performance of this regenerated eco-leather.

This invention relates to the field of coating technology and discloses a weather-resistant luminescent coating and its preparation process. The invention involves reacting polyester polyol, isocyanate monomer, 2,2-dimethylolpropionic acid, and N-(acetoacetate-based)diethanolamine, followed by mixing with fillers, luminescent powder, emulsifying agents, and aminopropyl-terminated polydimethylsiloxane to obtain the weather-resistant luminescent coating. The aminopropyl-terminated polydimethylsiloxane and polyurethane undergo chemical cross-linking to form a tight three-dimensional chemical cross-linking network, which is not easily penetrated by corrosive media such as water. This significantly improves the water and weather resistance of the polyurethane coating film, preventing yellowing, chalking, and cracking even after long-term outdoor exposure. Furthermore, the high flexibility of the polysiloxane molecular chain achieves a dynamic balance between toughening and cross-linking rigidity of the polyurethane, improving the impact resistance and flexibility of the coating film, making it less prone to peeling and cracking.

The application belongs to the technical field of surface treatment agent production, and discloses a kind of ultraviolet resistant polyurethane coating, including polyurethane emulsion and inorganic matter dispersed in polyurethane emulsion, the inorganic matter is inorganic matter modified by silane coupling agent;The inorganic matter is at least one selected from zinc oxide, titanium dioxide, silicon dioxide;The mass ratio of the inorganic matter modified by silane coupling agent and polyurethane emulsion is 1:6~8, the application adjusts the mass ratio between inorganic filler and coupling agent, polyurethane emulsion, improves the overall ultraviolet reflection ability of polyurethane emulsion, and then reduces the absorption of polyurethane to ultraviolet, and then reduces the occurrence of ultraviolet aging of polyurethane, in addition, the application also discloses a kind of preparation method of ultraviolet resistant polyurethane coating.

This invention discloses a high flame-retardant and corrosion-resistant PVC composite coated tarpaulin material for transportation equipment and its preparation method, relating to the field of tarpaulin composite material technology. The tarpaulin, from the outside to the inside, includes an outer surface functional layer E3, an outer polyvinyl chloride functional coating, a fabric base E0 and an impregnation layer E1, and an inner weldable polyvinyl chloride coating. The outer polyvinyl chloride functional coating comprises a polyvinyl chloride resin matrix, an extract-resistant plasticizing system, a microencapsulated ammonium polyphosphate and hydrophobic zinc borate flame-retardant system, a calcium-zinc stabilizing system, and contains sacrificial oxidation buffer components and rare earth oxide nano-components. The outer surface functional layer E3 is a polyaspartic acid ester type polyurea polyurethane coating containing the two components mentioned above, including impregnation and cross-linking of the base fabric, double-sided coating with paste and fusion, and corona treatment of the outer surface followed by sequential coating with E2 and E3 to cure into a film. It is suitable for hypochlorite and peroxide disinfection and cleaning environments and can be assembled and used with high-frequency welding.

The application discloses a kind of isobornyl methacrylate, antibacterial polyurethane coating, isobornyl methacrylate is used to prepare water-based polyurethane coating, the isobornyl methacrylate is by pretreatment containing combined with ethoxysilane group;The addition amount of the isobornyl methacrylate in water-based polyurethane coating is 3~5%.The isobornyl methacrylate combined with ethoxysilane group is used as modified component in the water-based polyurethane coating system of the application, so that the water-based polyurethane coating not only inherits the original excellent performance, and the tensile strength and thermal stability of coating film are improved, and water absorption is reduced, more waterproof ability and stability.

This invention relates to a controlled-release potassium granule, comprising a potassium nutrient core and a polyurethane coating layer covering the surface of the potassium nutrient core. The potassium nutrient core uses at least one of potassium chloride and potassium sulfate as the potassium source material, and also includes a functional carrier, a potassium activator modifier, and a binder. After the potassium source material, functional carrier, potassium activator modifier, and binder are mixed evenly, the potassium nutrient core is formed through granulation and drying processes. This invention adopts a separate potassium coating design, breaking the limitations of existing nitrogen, phosphorus, and potassium mixed coatings. It can be flexibly mixed with separately coated nitrogen, phosphorus, and other nutrient fertilizers in any proportion, and can precisely adjust the mixing ratio of potassium with other nutrients according to the nutrient requirements of different crops (such as grain crops and fruit and vegetable crops) and different growth stages (such as seedling stage, fruit expansion stage, and grain filling stage), so as to achieve personalized precision fertilization and adapt to the personalized needs of various crops.

This invention provides a backfill structure for manholes based on fluidized solidified soil casting. The structure includes the manhole body, a concrete cushion layer, a polyurethane waterproof coating, a ring-shaped waterstop steel plate, a fluidized solidified soil backfill layer, elastic sealant, and reinforcing components. Through multiple waterproofing designs and layered casting of self-compacting fluidized solidified soil, including the polyurethane coating, waterstop steel plate, and sealant, it solves the problems of insufficient compaction, easy leakage, and long construction period associated with traditional backfilling methods. Actual measurement data shows that this structure achieves a backfill density of ≥96% and shortens the construction period by 83%. It is suitable for municipal manhole projects, especially in areas with high groundwater levels and settlement sensitivity.

The utility model provides a kind of waterborne polyurethane coating heating device, it is related to waterborne polyurethane coating production field, including base, heating bucket being set on base, the detachable top of heating bucket is connected with top cover, cleaning mechanism is arranged on the top cover, the cleaning mechanism includes: cleaning disc, is suspended in the inside of top cover;Rotary shaft, bottom end fixedly connected cleaning disc, top end passes through top cover;Motor, output end is coaxially connected with rotary shaft top end;The shaft hole of top cover is equipped with sliding seal structure, rotary shaft is slidably sealed with shaft hole connection.The waterborne polyurethane coating heating device, by the setting of cleaning mechanism, when the inner wall needs to be cleaned, only need to start motor and electric push rod, motor drives cleaning disc to rotate, electric push rod retraction drives cleaning disc to descend, cleaning disc will clean the inner wall of heating bucket when rotating, residual coating is removed, ensure the product quality of subsequent production.

This invention discloses an anti-floating, fully bio-based polyurethane coating material, its preparation method, and its application. The anti-floating, fully bio-based polyurethane coating material comprises a mixed biomass polyol and a bio-based polyisocyanate, wherein the isocyanate index R of the mixed biomass polyol and the bio-based polyisocyanate is 0.4–0.85. The mixed biomass polyol is composed of lignin-based polyol, vegetable oil polyol, and dispersant in a mass ratio of (55–125):(45–325):(0.5–4.5). The coated slow-release fertilizer prepared by this patented product has advantages such as easy degradation of the coating material and anti-floating properties. By controlling the proportion of lignin-based polyol in the entire composition, the controlled-release period can reach 1 to 5 months, enabling rapid nutrient release at a certain point in the mid-to-late stages of crop growth, improving fertilizer utilization and crop yield, and is particularly suitable for rice and semi-arid crop planting areas in southern China.

The application provides a solvent-free thick-coating polyurethane waterproof material and a preparation method and application thereof, and relates to the technical field of high polymer materials.The solvent-free thick-coating polyurethane waterproof material composition comprises the following components in parts by mass: 20-25 parts of polyol A, 0.3-0.8 parts of high-functionality polyol B, 5-10 parts of porous structure filling aggregate A, 25-35 parts of filling aggregate B and 6-9 parts of polyisocyanate.The cross-linking structure of the polyurethane waterproof coating is changed by polyol A and high-functionality polyol B, and the combined filling aggregate of the special-structure porous structure filling aggregate A and the filling aggregate B is used, so that the polyurethane waterproof coating can be thickly coated and formed at one time.Meanwhile, no organic solvent is added in the composition, the special structure can greatly reduce the volatilization of harmful substances in the polyurethane coating construction process, and the green, safe and environmentally-friendly purpose is achieved.

This invention discloses a high-solids-content silicon-containing multi-arm star-shaped hydroxyl polyester for antifouling automotive coatings and its preparation method. The preparation method includes the following steps: mixing 1,3-dihydroxymethylurea, polyol, and caprolactone, adding an acid catalyst for reaction, and after the caprolactone has completely reacted, adding a single-ended epoxy-based polysiloxane and a cationic ring-opening catalyst dropwise. After the addition is complete, the reaction continues until the epoxy value decreases to below 1% of the initial value. Then, distilled water is added to decompose the cationic ring-opening catalyst. The mixture is then distilled under high vacuum conditions and cooled before being discharged to obtain the high-solids-content silicon-containing multi-arm star-shaped hydroxyl polyester. The high-solids-content silicon-containing multi-arm star-shaped hydroxyl polyester of this invention has advantages such as long activation period, low application viscosity, high application solids content, good chemical resistance of the coating film, fluorine-free properties, and good stain resistance when applied to polyurethane coatings.

The present application relates to the technical field of ground composite material, and provides a production process of UV-resistant ground composite material, which comprises, from top to bottom, an UV-resistant polyurethane coating layer, a wear-resistant layer, a glass fiber mesh cloth impregnated epoxy resin layer, a base layer and a polyester fiber cloth substrate; the UV-resistant polyurethane coating layer is 20-50 microns thick and is composed of UV-cured aliphatic polyurethane acrylate resin containing a composite photoinitiator; the wear-resistant layer is 30-80 microns thick and is composed of UV-cured modified polyurethane resin added with nano-aluminum oxide wear-resistant filler; the glass fiber mesh cloth impregnated epoxy resin layer is 0.1-0.3 mm thick and is formed by completely impregnating alkali-free glass fiber mesh cloth in modified epoxy resin glue solution and then curing; the base layer is formed by mixing bisphenol A type modified epoxy resin and inorganic filler and then curing, and is 1.0-3.0 mm thick; and the polyester fiber cloth substrate is a bearing layer and has a grammage of 100-200 g / m 2 After UV aging for 1000 h, the color difference ΔE is less than or equal to 1.7, the tensile strength retention rate is greater than or equal to 93%, and the outdoor service life can reach 10-12 years, which is 5-6 times that of traditional epoxy ground materials.

This invention belongs to the technical field of polymer functional coating materials, and discloses a bio-based polyurethane antibacterial and antifouling coating, its preparation method, and its application. It addresses the technical shortcomings of existing polyurethane coatings, such as reliance on petrochemical raw materials, limited functionality, poor synergistic effect of antibacterial and antifouling properties, short duration of antibacterial and antifouling effects, insufficient biosafety, and complex preparation processes. The steps are as follows: a polyorganosiloxane with single-terminated hydroxyl groups is dissolved in organic solvent I and a polyisocyanate compound is added to carry out the first reaction to obtain reaction solution I; curcumin is dissolved in organic solvent I and added to reaction solution I to carry out the second reaction to obtain reaction solution II; a bio-based polyol is dissolved in organic solvent II and added to reaction solution II to carry out the third reaction to obtain the bio-based polyurethane antibacterial and antifouling coating. The resulting coating exhibits excellent antibacterial properties, antifouling properties, and self-recovering antifouling function, and can be applied to various substrates such as glass, metal, wood, and ceramics, showing broad application prospects.

This invention belongs to the field of coating technology, specifically relating to a multifunctional coating for boards and its preparation method, including the following steps: (1) preparing molybdenum disulfide nanosheets modified with aminosilane coupling agent; (2) reacting 10-20wt% graphene oxide, inorganic nanoparticles, and modified molybdenum disulfide nanosheets for a period of time, then adding the remaining graphene oxide to continue the reaction, obtaining graphene oxide modified molybdenum disulfide nanosheets; (3) stirring and dispersing graphene oxide modified molybdenum disulfide nanosheets and aqueous polyurethane dispersion, then adding additives, and mixing evenly again to obtain a multifunctional coating for boards. This invention uses graphene oxide and inorganic nanoparticles to modify molybdenum disulfide. The modified molybdenum disulfide nanosheets can be uniformly dispersed in the coating, forming a highly cross-linked three-dimensional network structure, which significantly improves the anti-corrosion ability of the aqueous polyurethane coating.

The present application relates to the technical field of coating, and particularly discloses a weather-resistant and wear-resistant organic silicon polyurethane coating as well as a preparation method and application thereof.The present application provides a weather-resistant and wear-resistant organic silicon polyurethane coating, which is constructed by an organic silicon soft segment to form a flexible skeleton, a bonding type weather-resistant system to fix an ultraviolet-resistant and light-stable unit, and a fluorine-containing curing agent to form a surface wear-resistant protective layer, so that the weather resistance, wear resistance and flexibility are simultaneously improved.Meanwhile, the weather-resistant and wear-resistant organic silicon polyurethane coating has good adhesion and a long protection period, and can meet the protection requirements under complex working conditions.The present application provides a preparation method of the weather-resistant and wear-resistant organic silicon polyurethane coating, which has mild reaction conditions, controllable operation and good repeatability, does not need special equipment, and is suitable for large-scale production.

The application discloses fluorine-containing acrylic ester / graphene modified polyurethane paint as well as a preparation method and application thereof, and belongs to the technical field of oil well pipe surface treatment in the petroleum and natural gas industry. The method disclosed by the application uses polypropylene glycol, dimethylol propionic acid and toluene diisocyanate to prepare polyurethane prepolymer, realizes modification of polyurethane by using a multiple modification method, and then mixes the polyurethane prepolymer, fluorine-containing acrylic ester / graphene dispersion liquid, ethylenediamine and triaminopropyl siloxane, and combines the fluorine-containing polymer with graphene in the form of a covalent bond under the action of a catalyst by using the active functional groups such as the hydroxyl groups on the surface and the edge of graphene, so that the mechanical properties, corrosion resistance and high-temperature aging resistance of the coating are improved, and the coating has wide application value and prospect.

This utility model discloses a stain-resistant and water-repellent sofa fabric, comprising a composite suede fabric layer, a four-axis warp-knitted fabric layer, and a foamed fabric layer. The suede fabric layer includes a face comb, a middle comb, and a bottom comb. The yarn used in the face comb is ultra-fine polyester multifilament. One side of the face comb of the suede fabric layer has a pile layer formed by napping. One side of the pile layer of the suede fabric layer is coated with a water-based polyurethane coating, and the pile in the pile layer extends into the water-based polyurethane coating. The surface of the water-based polyurethane coating is coated with a three-proof finishing agent. The stain-resistant and water-repellent sofa fabric of this utility model has a three-proof finishing agent on its surface, achieving a water resistance rating of level 4 and an oil resistance rating of level 6. Furthermore, the four-axis warp-knitted fabric used provides good dimensional stability for this sofa fabric.

The present disclosure provides a fluorinated organic silicon modified waterborne polyurethane coating and a preparation method thereof, and belongs to the technical field of port power protection coating. The preparation method comprises the following steps: mixing diisocyanate, oligomeric diol and hydrophilic monomer, adding a catalyst after heating treatment, and stirring to obtain a polyurethane prepolymer; adding a neutralizing agent to the polyurethane prepolymer, stirring uniformly, and obtaining a neutralized prepolymer; adding deionized water to the neutralized prepolymer, shearing and dispersing, and standing to obtain a uniformly dispersed prepolymer; adding fluorinated organic silicon to the uniformly dispersed prepolymer, stirring and reacting, adding a chain extender, and stirring and reacting to obtain a fluorinated organic silicon modified waterborne polyurethane emulsion; coating the fluorinated organic silicon modified waterborne polyurethane emulsion into a mold, drying, and obtaining a fluorinated organic silicon modified waterborne polyurethane coating film, so as to endow the waterborne polyurethane coating with weather resistance and aging resistance in a high-humidity and high-temperature, high-ultraviolet environment of a coastal port.

This invention discloses a composite coating for concrete structures, comprising a sealing primer, an intermediate coat, and a topcoat. The sealing primer is a polyurea coating with modified concrete added, the amount of modified concrete being 3%–6% of the coating weight, and the thickness of the sealing primer being 20–100 μm. The intermediate coat is a polyurethane coating with steel powder added, the amount of steel powder being 3%–6% of the coating weight, and the thickness of the intermediate coat being 80–200 μm. The topcoat is an epoxy resin coating with molybdenum disulfide powder added, the amount of molybdenum disulfide powder being 1%–4% of the coating weight, and the thickness of the topcoat being 50–100 μm. The sealing primer of this composite coating fills concrete pores and cracks, improving structural density and providing a good foundation for subsequent coatings. The intermediate coat enhances overall strength and impact resistance, while the topcoat provides excellent anti-friction properties and chemical stability, blocking external erosion. The synergistic effect of these three components significantly extends the service life of concrete structures in harsh environments.

The application discloses a preparation method and application of an antifouling self-extinction water-based polyurethane coating, and utilizes a coordination addition reaction of a carbon-carbon double bond and a silicon-hydrogen bond to prepare an organic fluorosilicon modifier containing active functional groups, which is used as an antifouling modifier for covalent modification of polyurethane, and a self-extinction water-based polyurethane with antifouling function is prepared through reasonable molecular design. The antifouling self-extinction water-based polyurethane coating prepared through the method of the application effectively solves the technical problems of poor compatibility between a physical addition type antifouling additive and a water-based polyurethane matrix, poor migration resistance and poor durability of antifouling effect caused by the problems, and the synergistic effect between fluorine and silicon also enables the coating to achieve excellent antifouling performance under a small amount of fluorine, so that the cost can be effectively controlled.

This utility model discloses an integrated production line for steel pipe insulation and 3PE anti-corrosion, relating to the technical field of steel pipe anti-corrosion and insulation processing. It includes: an external rust removal line equipped with an external rust removal machine for removing rust, scale, and impurities from the outer surface of the steel pipe; a spraying line equipped with a spraying machine for applying polyurethane coating to the rust-removed steel pipe; and a winding transmission line with adjacent PE extruders and AD extruders. The PE extruder is used for coating the outer wall of the steel pipe with a polyethylene anti-corrosion layer. The AD extruder is used to extrude adhesive, which serves as the bonding medium for the anti-corrosion layer of the steel pipe and works in conjunction with the PE extruder. This utility model achieves rapid conversion between anti-corrosion and insulation processes through AD extruder slide rail switching, and automatically adjusts the roller conveyor with an intelligent control console. The "reciprocating" layout increases the temporary storage capacity of steel pipes and facilitates rapid process connection, thereby improving overall production efficiency.