183 results about "Alkali free" patented technology

The invention discloses an alkali-free accelerator and a preparation method and application thereof in the technical field of concrete additives, and the alkali-free accelerator provided by the invention comprises the following components in percentage by mass: 40%-50% of aluminum sulfate, 10%-15% of magnesium sulfate, 0.2%-0.6% of diethanol amine, 0.5%-1% of catechol-4-ammonium sulfonate, 5%-10% of a stabilizer and the balance of water. The stabilizer comprises silicate dispersion liquid and silica sol. The alkali-free accelerator provided by the invention can be used for spraying concrete, the mixing amount of the alkali-free accelerator is generally 4-6% of the mass of cement, the alkali-free accelerator is good in rapid setting effect and has excellent early and later compressive strength, and meanwhile, the alkali-free accelerator has relatively excellent stability.

The invention relates to the technical field of thermal insulation materials, in particular to an aerogel felt and a preparation method thereof.The aerogel felt is composed of a composite fiber base material and multi-component aerogel loaded in the composite fiber base material, the composite fiber base material comprises 65%-75% of alkali-free glass fibers, 15%-20% of modified polyimide fibers, 4%-6% of nanoscale carbon fibers and 8%-12% of basalt fibers, and the multi-component aerogel is loaded in the composite fiber base material. According to the multi-component aerogel, 78%-82% of tetraethoxysilane, 12%-14% of methyltrimethoxysilane, 4%-6% of dimethyldimethoxysilane and 2%-4% of vinyltrimethoxysilane serve as precursors, 1.5%-2.5% of aluminum oxide, 0.8%-1.5% of titanium oxide nanoparticles and 3%-4% of zinc borate are added, a multi-stage reinforced structure is formed, the mechanical property and flexibility of the aerogel felt are remarkably improved, the tensile strength reaches 400 kPa or above, and the tensile strength reaches 400 kPa or above. The flexibility is excellent.

The invention discloses a super-early-strength shrinkage-free high-crack-resistance tunnel spraying repair material in the technical field of civil engineering materials, which comprises the following raw materials in percentage by mass: 35-45% of sulphoaluminate cement; 8%-12% of a superfine early strength admixture; 2%-3% of a calcium sulphoaluminate expanding agent; 1%-2% of a magnesium oxide-based expanding agent; 1-2% of a calcium-magnesium composite expanding agent; 10%-15% of hollow glass beads; 1.5%-2.5% of copper plated steel fiber; 0.1%-0.3% of polypropylene fiber; 25%-30% of graded quartz sand; 0.5%-1.0% of a polycarboxylic acid water reducing agent; 3%-5% of an alkali-free liquid accelerator; 0.3%-0.8% of a thixotropic agent; and 0.1%-0.3% of a thickening time control agent. According to the method, a multi-scale performance cooperative regulation system is innovatively constructed. Through accurate control of the hydration process of a gel system, a shrinkage stress multi-stage compensation mechanism and systematic integration of a fiber-matrix interface strengthening technology, the mutual restriction relationship among early strength development, volume stability and crack resistance of a traditional material is broken through.

The invention relates to the technical field of fire-resistant cables, and particularly discloses a high-flame-retardant and high-fire-resistant cable which is composed of a conductor, an insulating layer formed by magnesium oxide particles and an outer sheath, a spiral cavity is formed between the conductor and the outer sheath, the spiral cavity is formed by at least one spirally-wound insulating tape, and the insulating tape is arranged between the conductor and the outer sheath. The spiral cavity is filled with magnesium oxide particles and is compacted, the insulating tape is a high-temperature-resistant flexible mica tape, the mica tape is formed by compounding synthetic mica paper or phlogopite paper and alkali-free glass fiber cloth, and the spiral cavity formed by the spirally wound composite mica tape limits the displacement of the magnesium oxide particles. The inclined winding of the insulating tape constructs a support system with a stable structure and uniform pressure distribution, greatly improves the deformation resistance of the insulating layer under dynamic mechanical stress, effectively guarantees the integrity of an insulating medium, and effectively solves the technical problem that a magnesium oxide layer in a traditional mineral insulated cable is easy to loosen.

The invention discloses a hydrolysis-resistant reinforced high-temperature nylon composite material and a preparation method thereof, and relates to the technical field of nylon composite materials. According to the composite material, a PA66-PA46 random copolymer, bio-based polyamide 1010 and PA6 resin are used as matrixes, and are matched with a composite reinforcement formed by silane coupling agent modified carbon nanotubes and hydrolysis-resistant alkali-free glass fibers; and a polycarbodiimide and epoxy-terminated polyether compounded hydrolysis-resistant agent, a bio-based composite nucleating agent, an antioxidant complexing agent, a fatty acid amide flowable agent and an inorganic coloring agent are used as auxiliary materials. The preparation method comprises the following steps: raw material synergistic pretreatment, ultrasonic-mechanical shearing synergistic premixing, dynamic pressure-regulating twin-screw extrusion blending, water mist-water cooling-air knife synergistic cooling pelletizing and vacuum pulse drying-crystallization synergistic post-treatment. The composite material is uniform in structure and stable in performance, has excellent hydrolysis resistance and high-temperature resistance, and is suitable for application scenes with relatively high requirements on material environment stability.

The invention provides a low-dielectric high-toughness alkali-free spherical glass powder modified copper-clad plate. The low-dielectric high-toughness alkali-free spherical glass powder modified copper-clad plate consists of a composite resin matrix, modified alkali-free spherical glass powder, a synergistic functional filler, an auxiliary agent, a reinforced base material and a conductive layer, the modified alkali-free spherical glass powder is subjected to gradient treatment of plasma activation, silane grafting and organic silicon coating, the particle size of the modified alkali-free spherical glass powder is 0.5-2 microns, the modified alkali-free spherical glass powder accounts for 10-20 parts by weight in the raw materials, and the content of organic functional groups on the surface of the modified alkali-free spherical glass powder is larger than or equal to 1.6 mmol / g.The invention further provides a preparation method of the low-dielectric high-toughness alkali-free spherical glass powder modified copper-clad plate. Compared with the prior art, the preparation method has the following beneficial effects that a double-resin blending and elastomer toughening system is constructed through a modification process of filler activation, silane grafting and organic silicon coating, and the technical bottleneck is solved in combination with an interface compatibility technology.

The invention discloses titanium-rare earth synergistic alkali-free glass with an ultrahigh strain point and high resistance and a preparation method of the alkali-free glass, and belongs to the technical field of glass. According to the alkali-free glass, a unique titanium-rare earth synergistic enhanced network is constructed, two key control parameters, namely, a high temperature performance index (HTPI) and a resistance synergistic factor (RCF), are defined for the first time, and when the HTPI is controlled to be 5.8-7.2 and the RCF is controlled to be 3.5-4.85, the strain point of the glass is larger than or equal to 745 DEG C, and meanwhile, the glass has the advantages that the glass has the good heat resistance and heat resistance; according to the glass substrate prepared by the preparation method disclosed by the invention, the resistivity at 1620 DEG C can be accurately regulated and controlled within an ideal interval of 50-150 omega.m, meanwhile, the Young modulus is greater than or equal to 88 GPa, the liquidus temperature is less than or equal to 1260 DEG C, the comprehensive performance is far better than that of the prior art, and the strict requirements of high-generation LTPS and IGZO display panel manufacturing on the glass substrate are perfectly met.

The invention belongs to the technical field of railway bridge ancillary facilities, and discloses a high-strength light composite material railway bridge foot plank which comprises a plane part at the top and hollow strip-shaped protrusions arranged in the length direction, and strip-shaped grooves opened downwards are formed between the protrusions so as to improve the bearing capacity and reduce the dead weight. The foot plank is formed by combining a resin matrix, an alkali-free glass fiber reinforced material, a flame retardant and an auxiliary agent, an unsaturated polyester resin system or an epoxy resin system is selected, and the connecting piece is of an S-shaped component or a hook type structure, so that rapid installation and reliable locking of the foot plank and the steel beam are achieved. The foot plank has the advantages of high strength, light weight, corrosion resistance, high weather resistance and the like, and is suitable for long-term safe use of railroad bridges.

An alkali-free glass sheet according to the present invention contains, as a glass composition, in mol %, from 60% to 80% of SiO2, from 12% to 15% of Al2O3, from 1.2% to 4% of B2O3, from 0% to 0.5% of Li2O+Na2O+K2O, from 2% to 8% of MgO, from 2% to 11% of CaO, from 0% to 5% of SrO, from 0% to 5% of BaO, and from 10% to 16% of MgO+CaO+SrO+BaO, in which a mol % ratio B2O3 / Al2O3 is from 0.1 to 0.3, a mol % ratio (B2O3+BaO) / SiO2 is from 0.01 to 0.1, and MgO+CaO+SrO+BaO—Al2O3 is from −2% to +2%.

The invention belongs to the technical field of civil engineering materials, and particularly relates to sprayed concrete suitable for a chlorine salt erosion environment and a preparation method of the sprayed concrete. And meanwhile, the bionic helical carbon nanotube-polymer composite gel is pre-dispersed in water. Sequentially adding the aggregate, the fiber and the composite cementing material, carrying out dry mixing, adding the gel dispersion liquid, the water reducing agent and the air entraining agent, and stirring to obtain a mixture; and finally, adding an alkali-free liquid accelerator at a nozzle through a wet spraying process, and spraying the alkali-free liquid accelerator to a construction surface. The nano hybrid material can effectively adsorb and lock chloride ions, and the bionic gel has a crack self-repairing function. And the two components have a synergistic effect, and are combined with a compact microstructure and a fiber reinforcing and toughening effect, so that the obtained concrete has extremely high chloride ion penetration resistance and durability, and is particularly suitable for support and protection engineering in chlorine salt environments such as temporary expressways and the like.

The utility model discloses an abnormal alkali-free glass fiber yarn removing device, which relates to the technical field of yarn production, and comprises a removing assembly, the removing assembly comprises a shell arranged at the top of a base, a first motor is arranged in the shell, a winding roller is arranged at the top of the shell, and the winding roller is fixedly connected with the output end of the first motor; a yarn body sleeves the winding roller, a first sliding groove is formed in the top of the base, a first lead screw is rotationally connected into the first sliding groove, a third sliding block is in threaded connection with the first lead screw, the shell is connected with the third sliding block, the detection assembly is arranged at the top of the base, the detection assembly comprises a support arranged at the top of the base, and a clamping groove is formed in the bottom of the support; according to the yarn cleaning device, through the arranged removing assembly, when impurities are detected in the yarn, the yarn is guided into the cleaning box, the yarn is soaked in the cleaning solution for a period of time, and the impurities are fully subjected to chemical reaction with the cleaning solution and are dissolved or decomposed.

The present application relates to the technical field of gypsum board, in particular to water-resistant and moisture-proof paper-faced gypsum board and its preparation process, comprising two layers of modified facing paper and gypsum board core material between the two layers of modified facing paper, characterized in that the gypsum board core material is composed of modified core material slurry, and the raw materials of the modified core material slurry are composed of the following components: gypsum clinker, water, cement particle ball, premixed paste, alkali-free glass fiber, hydrophobic / hydrophilic mixed starch, hydroxypropyl methyl cellulose, coagulant, and silicon oil catalyst. The present application builds a micro-nano titanium dioxide / silane composite hydrophobic coating on the surface of the facing paper to form the first physical water-blocking layer, and introduces silane-modified nanocellulose and emulsified silicon oil into the core to establish a hydrophobic network inside the core material, and the two form a gradient protection structure of surface shielding and internal hydrophobicity. Even if the outer coating is partially worn, the core material can still effectively prevent water diffusion, significantly improving the water resistance reliability in long-term humid environment.

The application relates to the technical field of fire-resistant cables, and particularly discloses a high-flame-retardant high-fire-resistant cable which is composed of a conductor, an insulation layer formed of magnesium oxide particles and an outer sheath, a spiral cavity is arranged between the conductor and the outer sheath, the spiral cavity is formed of at least one spiral-wound insulation belt, the magnesium oxide particles are filled in the spiral cavity and compacted, the insulation belt is a high-temperature-resistant flexible mica belt, the mica belt is composed of synthetic mica paper or phlogopite paper and alkali-free glass fiber cloth, the spiral cavity formed by the spiral-wound composite mica belt limits the displacement of the magnesium oxide particles, the inclined winding of the insulation belt constructs a support system which is stable in structure and uniform in pressure distribution, the anti-deformation capacity of the insulation layer under dynamic mechanical stress is greatly improved, the integrity of the insulation medium is effectively ensured, and the technical problem that the magnesium oxide layer in a traditional mineral-insulated cable is easy to loosen is effectively solved.

An alkali-free glass includes, in mol % in terms of oxides: SiO2: 63-75%; Al2O3: 10-16%; B2O3: 0-5%; MgO: 0.1-15%; CaO: 0.1-12%; SrO: 0-8%; and BaO: 0-6%. [MgO] / [CaO] is 1.5 or smaller. A value of Formula (A) is 82.5 or larger. A value of Formula (B) is 690 or larger and 800 or smaller. A value of Formula (C) is 100 or smaller. A value of Formula (D) is 20 or smaller. The alkali-free glass has a Young's modulus of 83 GPa or larger and a surface devitrification viscosity ηc of 104.2 dPa·s or higher.

The invention belongs to the technical field of filter materials, and particularly relates to an electret enhanced composite filter material and a preparation method thereof.The electret enhanced composite filter material comprises a PET fiber layer, an aramid nanofiber layer and an alkali-free glass fiber layer from top to bottom, and the mass ratio of the PET fiber layer to the aramid nanofiber layer to the alkali-free glass fiber layer is (30-60): (5-20): (20-50). According to the invention, the PET fiber layer is used as a supporting base material, so that good mechanical strength, structural stability and a preliminary filtering function are provided for the composite filter material; the aramid nanofiber layer is arranged, so that the filtering precision and efficiency of the composite filter material are remarkably improved; the alkali-free glass fiber layer is arranged, so that the filtering performance and the thermal stability of the composite filter material are further enhanced; the three-layer structure has a synergistic effect, so that the mechanical strength and economical efficiency of the filter material are considered while the filter precision of 0.1 mu m is realized, and the filter material has excellent comprehensive performance.

The utility model relates to the technical field of filter material base cloth, and discloses alkali-free glass fiber grid anti-static filter material base cloth which comprises anti-static filter material base cloth, a plurality of reinforcing assemblies are arranged at the top end and the bottom end of the anti-static filter material base cloth, anti-static cloth is arranged at the top end and the bottom end of the anti-static filter material base cloth, and the reinforcing assemblies are arranged at the bottom end of the anti-static filter material base cloth. According to the alkali-free glass fiber grid anti-static filter material base cloth disclosed by the utility model, the supporting property of the alkali-free glass fiber grid anti-static filter material base cloth is improved through the arrangement of the plurality of reinforcing assemblies, so that the alkali-free glass fiber grid anti-static filter material base cloth is not easy to deform in the use process when being made into a filter bag; according to the alkali-free glass fiber grid anti-static filter material base cloth, the anti-static effect of the alkali-free glass fiber grid anti-static filter material base cloth is improved through the arrangement of the anti-static cloth, the side edges of the alkali-free glass fiber grid anti-static filter material base cloth are not prone to loosening through the arrangement of the edge sealing assemblies, and the influence on the quality of a filter bag made of the alkali-free glass fiber grid anti-static filter material base cloth is avoided.

Provided is a method for producing an alkali-free glass substrate having a small number of pinholes. The method is a method for continuously producing an alkali-free glass substrate of the SiO2-Al2O3-RO (RO represents one or more of MgO, CaO, BaO, SrO, and ZnO) system, which includes a step of preparing a raw batch material containing a tin compound and substantially not containing an arsenic compound and an antimony compound; a step of electrically melting the prepared raw batch material in a melting furnace capable of performing electric heating using an electrode; and a step of forming the molten glass into a plate shape by a down-draw method, and the obtained glass has a β-OH value of 0.05 / mm or more and a number of metallic pinholes of 20 / t or less.

This invention provides a soft thermally conductive silicone material, belonging to the field of thermally conductive silicone. It includes a heat dissipation layer, an insulating layer glued to the upper side of the heat dissipation layer, and a pressure-resistant layer glued to the upper layer of the insulating layer. The dispersed graphene structure ensures effective heat dissipation both internally and externally, rapidly dissipating conducted heat. The boron nitride insulating layer provides efficient insulation, preventing conductivity upon chip contact and improving safety. The pressure-resistant layer, composed of fine glass fibers and with alkali-free glass fibers as a support, enhances tear resistance and mechanical strength. The elastic structure of the soft silicone layer further improves overall strength and tear resistance, preventing tearing of the material itself. A flame-retardant layer composed of silica increases the flame-retardant effect of the thermally conductive silicone. A pressure-sensitive adhesive layer ensures stable adhesion and fixation between the thermally conductive silicone and the chip.

The invention discloses multi-element solid waste foam concrete and a preparation method thereof, and relates to the technical field of foam concrete. The multi-element solid waste foam concrete comprises slag, fly ash, ardealite, sodium dodecyl benzene sulfonate and water, the invention relates to an alkali-free concrete which comprises the following components in parts by mass: 250-350 parts of fly ash, 5-20 parts of aluminum powder and 0-20 parts of a liquid alkali-free accelerator, and further comprises the following components in parts by mass: 250-350 parts of fly ash, 5-20 parts of aluminum powder and 0-20 parts of a liquid alkali-free accelerator. Compared with the traditional foam concrete, the materials used in the invention are all industrial solid wastes, and cement is not doped, so that the carbon emission of cement production is reduced while the solid wastes are consumed and the solid waste stockpiling pressure is relieved. When the multi-element solid waste foam concrete is applied to an outer wall enclosure structure, due to the fact that the multi-element solid waste foam concrete is light in weight, has many spherical pores, excellent heat preservation performance and low dry density, the self-weight pressure of a high-rise building is reduced, cold and heat transmission paths are reduced, the heat conductivity coefficient is lower, and a large amount of energy consumed by refrigeration and heat is reduced.

The invention relates to the technical field of cables, in particular to a high-performance flame-retardant cable, which comprises a cable core, a constraint structure and an outer sheath, and is characterized in that the constraint structure sleeves the outer surface of the cable core and is provided with a rigid part and a viscous part; the outer sheath sleeves the outer surface of the constraint structure; the outer sheath can adhere to the viscous part in a combustion state and is restrained by the rigid part so as to limit the expansion of the outer sheath in the circumferential direction. According to the invention, a low-smoke halogen-free inner sheath and flame-retardant glass fiber tape gap wrapping structure is additionally arranged between the cable core and the outer sheath, or a low-smoke halogen-free composite wrapping tape overlapping wrapping structure embedded with alkali-free glass fiber yarn or embedded with glass fiber gridding cloth is arranged between the cable core and the outer sheath; the expansion degree of the low-smoke halogen-free outer sheath in the high-temperature decomposition shell forming process during flame burning can be effectively reduced, burning drippings are completely eradicated, and no burning drippings can be stably achieved in the whole length of the cable.

The utility model discloses a kind of flame-retardant fire-resistant low-voltage power cable containing special-shaped conductor, it relates to power cable technical field.The power cable includes cable core, the cable core is successively coated with second ceramicized fireproof fireproof silicone rubber composite tape, third ceramicized fireproof fireproof silicone rubber composite tape and alkali-free glass fiber cloth tape;The cable core is composed of multiple special-shaped conductor assemblies and the alkali-free glass fiber rope between each special-shaped conductor assembly;The special-shaped conductor assembly includes special-shaped conductor, first ceramicized fireproof fireproof silicone rubber composite tape and insulating layer, the first ceramicized fireproof fireproof silicone rubber composite tape is coated special-shaped conductor, and the insulating layer is coated first ceramicized fireproof fireproof silicone rubber composite tape.The utility model provides a kind of flame-retardant fire-resistant low-voltage power cable containing special-shaped conductor, the longer the structure ablation time is, the higher temperature is, the harder the shell is, the better the fireproof, heat insulation effect is, and the highest temperature can reach above 2800 DEG C.

The utility model discloses a flexible environment-friendly aluminum alloy core fireproof cable, and relates to the technical field of flexible environment-friendly aluminum alloy core fireproof cables. The outer surface of the first wrapping layer is fixedly connected with a first alkali-free glass fiber belt, the outer surface of the first alkali-free glass fiber belt is fixedly connected with a double-layer ceramic fireproof belt, and the outer surface of the double-layer ceramic fireproof belt is fixedly connected with a second alkali-free glass fiber belt; the outer surface of the second alkali-free glass fiber belt is fixedly connected with a flame-retardant layer, the outer surface of the flame-retardant layer is fixedly connected with a high-temperature-resistant layer, and the outer surface of the high-temperature-resistant layer is fixedly connected with a low-smoke halogen-free layer; the outer surface of the low-smoke halogen-free layer is fixedly connected with a corrosion-resistant layer, and the outer surface of the corrosion-resistant layer is fixedly connected with a second wrapping layer. The outer surface of the second wrapping layer is fixedly connected with an outer protective layer; the inner surface of the first wrapping layer is fixedly connected with a wire slot; a plurality of insulating layers are fixedly connected to the interiors of the wire grooves, and aluminum alloy conductors are fixedly connected to the interiors of the insulating layers.

The invention provides an optimization method and system for a production process of an alkali-free liquid accelerator, and belongs to the technical field of process optimizing.The optimization method specifically comprises the steps that when a raw material is not in a parameter control interval of the raw material for controlling the type of the raw material, according to batch data for controlling the type of the raw material in history, the type of the raw material is determined; and determining a parameter adjustment method of the raw materials in the production process by combining the similar condition of parameters of the raw materials and different batches of raw materials in a coagulation time interval corresponding to the type of the control raw materials, obtaining coagulation durations under different parameter adjustment schemes on the basis of the parameter adjustment method, and determining the quality of the raw materials according to an analysis result of the coagulation durations. And whether adjustment treatment for controlling the types of the raw materials needs to be carried out or not is determined, and the production quality of the accelerator is improved.

An alkali-free glass includes, in mol % in terms of oxides: SiO2: 63-75%; Al2O3:10-16%; B2O3: 0-5%; MgO: 0.1-15%; CaO: 0.1-12%; SrO: 0-8%; and BaO: 0-6%. [MgO] / [CaO] is 1.5 or smaller. A value of Formula (A) is 82.5 or larger. A value of Formula (B) is 690 or larger and 800 or smaller. A value of Formula (C) is 100 or smaller. A value of Formula (D) is 20 or smaller. The alkali-free glass has a Young's modulus of 83 GPa or larger and a surface devitrification viscosity ηc of 104.2 dPa·s or higher.

The invention provides a transparent composite material with a sandwich structure and a preparation method thereof, and relates to the technical field of materials. Specifically, the transparent composite material comprises a first panel, a core layer and a second panel which are connected in sequence, the core layer comprises at least one of PC (polycarbonate), PMMA (polymethyl methacrylate), PVC (polyvinyl chloride), PET (polyethylene terephthalate) or PP (polypropylene); the first panel and the second panel comprise a fiber reinforced transparent material, and the fiber reinforced phase comprises at least one of E-alkali-free glass fibers, S-2 glass fibers, R-glass fibers, T-glass fibers, or HS-glass fibers. The transparent composite material has good mechanical strength on the premise of high light transmittance, the core layer provides overall rigidity and shear bearing capacity, the panel material bears bending and pressure loads, the strength of the composite material is improved, and the transparent composite material has good machinability and design freedom degree.

This invention relates to a high-temperature and radiation-resistant winding wire for a nuclear power plant control rod drive mechanism. The winding wire comprises a conductor and an insulating layer attached to the conductor. The insulating layer includes a first wrapping layer and a second wrapping layer sequentially wrapped around the conductor from the inside out. Both the first and second wrapping layers are made of alkali-free glass fiber. Because the insulating material used in this invention does not contain organic materials, it eliminates the defects of organic materials in high-temperature resistance, allowing the winding wire to exceed the 350°C temperature limit and maintain stable operation at 500°C for extended periods. Furthermore, the thickness of the entire insulating layer can be controlled to 0.20 mm or less on both sides, reducing the insulation thickness by 30% compared to existing technologies. This improves slot fill efficiency and significantly reduces the volume of the nuclear power plant control rod drive mechanism, meeting the needs of intensive development.

The utility model discloses a coating structure for a large-diameter central thermal insulation pipe of a medium-deep geothermal well, which belongs to the field of large-diameter central thermal insulation pipes and comprises an aerogel layer, a layer of aluminum foil is arranged on the aerogel layer to serve as a base layer, and 3-10 base layers are arranged to form a multi-layer coating. Side edge alkali-free glass fiber cloth belts are arranged on the two opposite sides of the multi-layer wrapping object, and the side edge alkali-free glass fiber cloth belts wrap and are fixed to the two opposite sides of the multi-layer wrapping object to form the wrapping object structure. According to the utility model, the aerogel layer is used as the base layer, and the thermal insulation performance is enhanced through the aluminum foil and a multi-layer overlapping mode, so that the heat insulation effect is greatly improved while the flexibility and the coating efficiency of the coating structure are kept. The use of the side alkali-free glass fiber cloth tape not only enhances the structural stability of the coating, but also effectively prevents the leakage of powder and fiber, thereby reducing the potential harm to the environment and human body.