863 results about "Coating materials" patented technology

Provided is a method for determining the adhesive penetration into at least one porous coating material which is pressed with at least one carrier plate and at least one adhesive layer arranged on the carrier plate. The adhesive penetrates or rises into the at least one porous coating material during the pressing process.

The invention relates to the technical field of special functional coating materials for lost foam casting, and particularly discloses a special coating for a large machine tool casting lost foam as well as application and a use method of the special coating. According to the invention, the full-temperature-range functional composite material and the composite aggregate are used for synergistic reinforcement, and mullite is used for high-temperature reinforcement; the temperature-sensitive polymer modified graphite can realize intelligent temperature response of graphite performance; spodumene is used as a thermal expansion adaptive fluxing agent, so that medium-temperature healing and thermal expansion adjustment of a coating system are facilitated; the composite reinforced fibers are reinforced and toughened aiming at large thermal stress of thick and large parts; as an ultralow-temperature glazing agent, the boron-containing glazing agent can form an initial liquid phase at about 450 DEG C to seal the surface of the coating and purify a ventilation channel; the rare earth oxide serving as a high-temperature phase stabilizer can be dissolved in mullite crystal lattices, so that the high-temperature phase stability is improved, and ceramic nodes are refined. Through raw material design, on the premise of ensuring moderate air permeability, the ultrahigh strength and crack resistance of a coating system at extremely high temperature are improved.

The invention relates to the technical field of coating materials, and particularly discloses a metallurgical strengthening preparation process of a wear-resistant coating of a high-stress valve ball. Comprising the following steps that S1, a porous structure supporting layer is prepared, specifically, cobalt-based alloy powder and a pore forming agent are mixed according to the mass ratio of (85-92): (8-15), and a porous middle layer is formed on the surface of a sphere base body through sintering; s2, coating slurry is injected; s3, sintering is carried out; s4, carrying out laser micro-texture treatment; s5, embedding a solid lubricant; s6, performing hot isostatic pressing densification; and S7, vibration auxiliary polishing is conducted. The metallurgical strengthening preparation process for the wear-resistant coating of the high-stress valve ball can be used for surface strengthening treatment of high-parameter valve core ball parts in the fields of petrochemical engineering, electrical energy, aerospace and the like, and has the advantages of high bonding strength between the coating and a matrix, excellent high-temperature wear resistance and thermal shock resistance, stable friction coefficient, long service life, high wear resistance and the like. And the method has the advantages of high process adaptability and low bonding failure risk.

The invention discloses a high-entropy alloy wear-resistant coating with a silicon-containing transition layer for improving the wettability of a copper surface and a laser cladding method, and relates to the technical field of alloy coatings. The method comprises the following steps: providing silicon-containing transition layer alloy powder and CoCrFeNiTi series high-entropy alloy powder; providing a copper base material, and cleaning the surface to be cladded of the copper base material; cladding silicon-containing transition layer alloy powder on the surface of the copper base material by adopting a laser cladding process under a protective atmosphere to form a silicon-containing transition layer; and under the protective atmosphere, CoCrFeNiTi series high-entropy alloy powder is cladded on the surface of the silicon-containing transition layer through a laser cladding process, and the high-entropy alloy wear-resistant coating is formed. According to the high-entropy alloy coating disclosed by the invention, the Si element in the transition layer can be subjected to interface reaction with a copper substrate to form a Cu-Si solid solution phase with low interface energy, so that the interface tension between copper and a subsequent cladding coating is remarkably reduced, and the wettability between the copper substrate and a coating material is fundamentally improved; the high-entropy alloy coating is successfully cladded on the copper surface with poor wettability.

A gas turbine engine component, comprises a densified three-dimensional woven ceramic matrix composite comprising the shape of the gas turbine engine component, the densified three-dimensional woven ceramic matrix composite further comprises a three-dimensional woven structure comprising a densified ceramic matrix disposed on, within and throughout a three-dimensional weave comprising at least one inorganic fiber comprising at least one multilayer coating material structure disposed thereupon, wherein the at least one multilayer coating material structure comprises at least one first interface coating material layer comprising a boron nitride; at least one coating material layer comprising a silicon nitride; at least one second interface coating material layer comprising the boron nitride; and at least one third interface coating material layer comprising a Si3N4-BN multilayer coating having one or more alternating layers comprising at least one layer of silicon nitride at a first thickness; and at least one layer of boron nitride at a second thickness.

The invention provides a wear-resistant aerogel coating and a preparation method thereof, and belongs to the technical field of new coating materials. The method comprises the following steps: carrying out cleaning, coarsening and plasma activation pretreatment on the surface of a base material; the preparation method comprises the following steps: dissolving polyurethane in a solvent, adding a wear-resistant reinforced phase containing silicon dioxide and an acrylic acid material, uniformly dispersing, and adding a cross-linking agent for cross-linking reaction to form polyurethane aerogel slurry; and coating the surface of a pretreated base material with the slurry in the early stage of a cross-linking reaction, and then carrying out low-temperature or freeze-drying and heat treatment curing to obtain the wear-resistant aerogel coating. By compounding the polyurethane flexible skeleton and the wear-resistant reinforced phase, the wear resistance, adhesive force and structural stability of the coating are remarkably improved while the characteristics of light weight, porosity, heat insulation and buffering of aerogel are maintained, the coating is suitable for surface protection of various base materials under complex working conditions such as friction and impact, the process is simple and controllable, and the cost is low. And the method has a wide engineering application prospect.

The invention discloses a water-based poly-ceramic coating material as well as a preparation method and application thereof. The formula comprises a composite base material (40-45 parts of modified waterborne polyurethane resin and 15-20 parts of a waterborne acrylic emulsion), a synergistic curing system (10-12 parts of a blocked isocyanate curing agent and 0.8-1.2 parts of a latent organic zinc salt accelerant), an organic-inorganic reinforced phase (10-15 parts of nano silicon dioxide and 8-10 parts of polysilazane) and a functional aid. The base material and the cosolvent cooperate to make VOCs less than or equal to 30 g / L, a curing system cooperates to realize low-temperature rapid curing, organic-inorganic components cooperate to form a poly-ceramic structure, the coating is adaptive to an existing roll aluminum production line, and the problems of environmental protection, energy conservation and performance of a traditional coating are solved.

The invention belongs to the technical field of metal anticorrosive coating materials, and particularly relates to a super-hydrophobic composite coating and a preparation method thereof. According to the invention, MoS2 is used as a skeleton, CeO2 nanoparticles are uniformly loaded on the surface of a MoS2 two-dimensional layered structure, polydopamine is used as a connecting agent to form a stable Ce-MoS2 composite filler, and an active and passive protective layer with the Ce-MoS2 composite filler is constructed on the surface of a matrix and is used as a bottom layer. And then, forming a hydrophobic coating containing modified SiO2 on the bottom layer to serve as a surface layer, so as to obtain the super-hydrophobic composite coating with double protection mechanisms. According to the coating, the active corrosion inhibition function of CeO2 and the physical shielding effect of MoS2 are combined, meanwhile, hydrophobic SiO2 nano-particles are introduced into the surface layer, the hydrophobic performance of the surface is further enhanced, and therefore the technical problems that a traditional coating is prone to corrosion at the defect position and a corrosive medium is prone to permeation, and consequently the protection effect is remarkably reduced are effectively solved.

This invention discloses a method for preparing a microcapsule-based photothermal self-healing anti-icing coating, belonging to the field of functional coating materials technology. The method includes: obtaining the core material and wall material composition parameters of the microcapsules, and collecting the polyacrylamide concentration and dopamine polymerization time; constructing a morphology-photothermal correlation model of the microcapsules to obtain the predicted photothermal conversion efficiency; performing multi-objective optimization on the core and wall material composition parameters with the target photothermal conversion efficiency as a constraint, and iteratively inverting to obtain the optimal microcapsule configuration; preparing primary microcapsules and composited with a dopamine photothermal modification layer on their surface to obtain a photothermal self-healing microcapsule additive; mixing the photothermal self-healing microcapsule additive with an epoxy resin-based coating at an adaptive mass ratio, coating and curing to obtain an anti-icing coating. This invention achieves accurate prediction of the photothermal conversion efficiency of microcapsules and intelligent optimization of composition parameters, obtaining an anti-icing coating with both high photothermal conversion efficiency and rapid self-healing capability.

The invention discloses an environment-friendly anti-icing and deicing coating as well as a preparation method and application thereof, and aims to solve the problems of low efficiency, high corrosivity, serious environmental pollution and the like in the traditional anti-icing and deicing technology. The coating material is prepared from the following components: deionized water, polyvinylpyrrolidone, propylene glycol, glycerol, fumed silica, granular silica, ethanol, potassium acetate and a waterborne polyurethane coating. The invention further provides a preparation method of the coating material, and the coating material is applied to anti-icing of metal and plastic substrates and has dual functions of preventing icing and rapidly removing ice. The coating has the advantages of being good in durability, environmentally friendly, free of corrosion to base materials and the like, is particularly suitable for anti-icing protection of equipment such as rails, wind power blades and cables, remarkably improves the operation and maintenance efficiency of key facilities and equipment, reduces the maintenance cost and has important economic and social benefits.

The invention relates to a double-layer Si-Zr self-reaction coating and a preparation method thereof, and belongs to the technical field of carbon ceramic ablative materials. B4C powder is subjected to ball milling and crushed until the diameter is smaller than 100 nm, ZrSi2 alloy is added and evenly mixed with B4C subjected to ball milling, a polycarbosilane solution is added for ball milling, ZrSi2 slurry wrapped by B4C is obtained and dried, and ZrSi2 powder wrapped by B4C is obtained; adding the powder into a polysiloxane solution containing SiC powder, and mechanically and sufficiently mixing to obtain slurry; spraying the slurry on the surface of the C / C material through pressurization, and drying to obtain the coating material. The coating comprises the polysiloxane-containing SiC layer on the outer layer and the B4C-ZrSi2 layer on the inner layer, in the oxidation ablation process, the crack effect of the coating on the surface layer can be achieved within a certain time, and the oxidation rate of the material is greatly decreased.

The invention discloses a functionalized hybrid flame retardant based on cyclodextrin-MOF (Metal Organic Framework) as well as a preparation method and application thereof, and belongs to the technical field of high polymer material science and flame retardance. The hybrid flame retardant (F-CD-MOF) has a core-shell structure, a core body is crystalline CD-MOF formed by self-assembly of cyclodextrin and potassium ions, and a shell layer is an organic interface layer which is formed by grafting of a silane coupling agent and contains an active functional group (-NH2 or-NCO). The preparation method comprises the steps of CD-MOF primary crystal synthesis, surface silanization functionalization and post-treatment. The flame retardant can be used as a reactive nanofiller for preparing a high-performance flame-retardant polyurea coating, a polyurea three-dimensional cross-linked network is embedded through covalent bonding, the UL-94 flame-retardant grade of the obtained coating reaches V-0 grade, the peak heat release rate is reduced by 40% or above compared with that of a pure polyurea coating, and the flame retardant has excellent mechanical properties and is suitable for industrial production. The fireproof coating is suitable for high-end fireproof fields such as building fireproof coatings and electric power facility fireproof coating materials.

The invention provides an inner hole plasma spraying high-bonding-strength bonding layer and Y2O3 coating material and a preparation technology thereof. The bonding layer comprises a middle transition layer formed after Si and C on the surface of a graphite matrix are subjected to a chemical reaction. The inner hole plasma spraying high-bonding-strength bonding layer provided by the invention is composed of a silicon carbide transition layer generated by in-situ reaction of molten silicon and carbon on the surface of a graphite matrix, and can form a Si-O-M bridged bond with a subsequent ceramic coating, so that interface bonding is converted into chemical bonding from mechanical anchoring, and the bonding strength is improved. And meanwhile, by utilizing the thermal expansion characteristic of silicon carbide between graphite and ceramic, the purposes of buffering thermal mismatch stress step by step on the atomic scale, blocking high-temperature diffusion of carbon elements and endowing the coating with lasting high bonding strength and thermal cycling stability are achieved.

The invention belongs to the technical field of coating materials, and particularly relates to an ablation-resistant anti-aging coating on the surface of an aircraft and a preparation method of the ablation-resistant anti-aging coating. A silane coupling agent containing an epoxy group and vinyl and boric acid are used as raw materials, an organic silicon-boron hybrid oligomer with a Si-O-Si and Si-O-B bond stereo structure is obtained by adjusting the ratio of the silane coupling agent to the boric acid and serves as a bridge, and phenolic resin, hydrogen-containing silane and vinyl silicone rubber are combined together to form the ablation-resistant anti-aging coating. Wherein an epoxy group and a phenolic hydroxyl group are subjected to a condensation reaction, vinyl and a platinum catalyst form a compact cross-linked structure through hydrogen-containing silane, and the obtained coating has a lower ablation rate, better anti-UV weather resistance and higher flexibility, is suitable for long-time protection of the surface of an aircraft, and has a better ablation protection effect under shear airflow impact.

Provided is a method for determining the resin penetration into at least one porous coating material which is pressed with at least one carrier board and at least one resin layer arranged on the carrier board. During the pressing process the resin penetrates or rises into the at least one porous coating material.

Device for treating precipitated sludge sediment from wastewater treatment, in particular wastewater from paints and varnishes and / or coating materials and / or liquid special waste, comprising chamber filter presses with filter cloths through which the precipitated sludge sediment is to be treated, wherein at least one removable precoat layer of a filtration aid in a predetermined concentration is applied to each filter cloth.

A multispectral imaging film coating uniformity on-line detection system comprises the following steps: carrying out full-spectrum response curve test on a standard coating sample, screening basic candidate wavelengths corresponding to different coating materials, carrying out industrial scene test on the basic candidate wavelengths, and determining the uniformity of the coating according to the basic candidate wavelengths. The comprehensive adaptive value of the basic candidate wavelength of each coating material under different thicknesses is obtained; acquiring a sensitive wave band combination of a to-be-detected coating of a current production line based on the comprehensive adaptive value, acquiring a spectral image of each sensitive wave band on the surface of the to-be-detected coating, performing adaptive fitting baseline correction preprocessing on the spectral image of each sensitive wave band, performing spectral feature mining and correlation screening on the spectral image, and acquiring a low-dimensional feature vector; and performing thickness inversion based on the low-dimensional feature vector, generating a coating thickness two-dimensional distribution heat map, performing uniformity judgment on the coating thickness two-dimensional distribution heat map, and outputting a uniformity judgment result. According to the invention, the accuracy and pertinence of coating uniformity detection are obviously improved.

The invention relates to the technical field of thermal barrier coatings, in particular to a gadolinium oxide and aluminum oxide co-doped modified YSZ: Dy thermal barrier sensing coating material as well as a preparation method and application thereof. The invention provides a thermal barrier sensing coating material. The chemical composition of the thermal barrier sensing coating material is Y Gd Al < c > Zr < d > DeyOf, wherein a is equal to 0.01 to 0.04, b is equal to 0.15 to 0.35, c is equal to 0.40 to 0.60, d is equal to 0.35 to 0.70, e is equal to 0.01 to 0.02, and f is equal to 1.50 to 1.70. The temperature measurement upper limit of the thermal barrier sensing coating material is 1200 DEG C, and the average thermal expansion coefficient is increased by 18% at the room temperature of 1200 DEG C, so that the thermal shock resistance of the thermal barrier sensing coating is effectively improved, and the service life of the thermal barrier sensing coating is prolonged.

The present application relates to the technical field of special functional coating materials for lost foam casting, and specifically discloses a special coating for large machine tool castings, and application and use method thereof. The present application synergistically strengthens full-temperature-range functional composite materials and composite aggregates, and uses mullite for high-temperature strengthening. Temperature-sensitive polymer modified graphite can realize intelligent temperature response of graphite performance. Lithium feldspar as a thermal expansion adaptive fluxing agent is more conducive to the medium-temperature healing and thermal expansion adjustment of the coating system. Composite reinforcing fibers are used to enhance and toughen the thick and large workpiece with large thermal stress. Boron-containing glazing agent as an ultralow-temperature glazing agent can form an initial liquid phase at about 450 DEG C, seal the surface of the coating, and purify the air passage. Rare earth oxides as high-temperature phase stabilizers can be solid-solved in the mullite lattice, improve the high-temperature phase stability, and refine the ceramic nodes. Through raw material design, the coating system has improved ultrahigh strength and crack resistance at extreme high temperatures under the premise of ensuring moderate air permeability.

The application discloses a kind of spaceborne storage module packaging method, spaceborne storage module and satellite, the method includes obtaining the model of packaging circuit module;Thermal simulation experiment is carried out based on the model of packaging circuit module, and heat flux density distribution information is obtained;Target cooling area is determined based on heat flux density distribution information;Packaging circuit module is installed on substrate;First shielding layer is manufactured using metal material of first density;The model of second shielding layer is obtained;Micro-channel heat dissipation area is determined based on target cooling area;Second shielding layer is manufactured based on the model of second shielding layer using metal material of second density;Third shielding layer formed by coating material is prepared on the inner surface of second shielding layer, to obtain composite shielding shell;Composite shielding shell is fixedly installed on substrate through insulating adhesive layer and contains packaging circuit module, to obtain spaceborne storage module.The application makes that composite shielding shell has anti-radiation effect and heat conduction effect simultaneously, which greatly improves the heat conduction efficiency.

The invention relates to the technical field of nano materials and biomedical engineering, and discloses a dye-sensitized rare earth up-conversion luminescent nano material as well as a preparation method and application thereof. The dye-sensitized rare earth up-conversion luminescent nano-material comprises a rare earth doped up-conversion nano-particle core, an unsaturated fatty acid salt self-assembled shell layer and a near-infrared dye modified on the surface of the rare earth doped up-conversion nano-particle. The unsaturated fatty acid salt coating layer endows the material with excellent water dispersibility through a hydrophilic group; a hydrophobic chain segment and an unsaturated double bond can effectively block water and oxygen permeation and quench singlet oxygen, so that the photobleaching half-life period of the material is increased by 86.7 times or more compared with that of a conventional coating material, and the light stability is excellent; the material successfully realizes efficient up-conversion luminescence under excitation of a low-power near-infrared light emitting diode (NIR LED, the power density of which can be as low as 100mW / cm < 2 >), and thoroughly gets rid of dependence on a high-cost and high-risk laser.

The invention discloses an organic-inorganic multi-layer composite coating material with functions of promoting cell adhesion, resisting infection and promoting osteogenesis and a preparation method of the organic-inorganic multi-layer composite coating material. The method specifically comprises the following steps: 1) carrying out primary sand blasting treatment on a titanium / titanium alloy sample, then removing an oxide layer on the surface of the titanium / titanium alloy sample by using an ultrasonic oil removal and glow discharge cleaning process, and constructing a copper / zinc alloy coating on the surface of the sample by combining an electrochemical deposition process; 2) carrying out micro-nano processing on the coating by using a secondary sand blasting process to introduce a topological morphology; (3) depositing a polydopamine PDA coating on the surface by using an in-situ auto-polymerization process, and simultaneously dipping to complete the chelation of Fe < 3 + > and PDA; 4) further utilizing an ultrasonic impregnation process to realize conversion from PDA-Fe < 3 + > chelation to PDA-Fe < 3 + >-salvianolic acid b chelation so as to introduce a salvianolic acid b layer, and washing, air-drying and sterilizing to obtain the material. The material has multiple cell adhesion promotion, infection resistance and multiple osteogenesis promotion functions, and can realize innovation of coating technologies in the fields of orthopedics, dentistry and the like.

A method includes mounting an assembled wheel hub assembly on a spindle, spraying a zinc flake coating material onto first surfaces of the assembly while rotating the wheel hub assembly, the spraying occurring while shielding second surfaces of the wheel hub assembly with a shield on the spindle and shielding third surfaces of the wheel hub assembly using a shielding tape. After creating the layer of zinc flake coating material on the first surfaces, heating the layer of zinc flake coating material using at least one infrared (IR) lamp to cure the layer of zinc flake coating material, the heating occurring while rotating the wheel hub assembly.

A robot for coating a vehicle body includes a coating head, a reservoir for storing coating material, a supply device capable of controlling the pressure of coating material flowing through a circulation path provided between the coating head and the reservoir, and an arm having a coating head and a supply device. The arm is a multi-axis arm having multiple arm members and a movable shaft connecting each arm member to each other, and it has a posture control means that controls the posture of the multiple arm members during coating of the vehicle body by the coating head to maintain the relative position of the coating head and the supply device at a constant level or to suppress fluctuations in the relative position within a predetermined allowable range.

The utility model relates to the technical field of coating ovens, in particular to a drying device of a coating oven. Comprising a drying oven, a coating material arranged in the drying oven in a penetrating mode, a hot air generation and circulation device installed at the top in the drying oven, a plurality of baffles installed below the hot air generation and circulation device and used for partition heat insulation, and a hot air drying mechanism installed below the hot air generation and circulation device and used for heat source circulation. According to the coating oven drying device, through the design of the multiple sets of air guide assemblies distributed at equal intervals and the combination of a hot air output and recovery circulating system, the hot air utilization efficiency and drying uniformity are remarkably improved, the angle of an air outlet of each air guide assembly is adjustable, and the drying efficiency is improved. The drying requirements of different coating materials can be flexibly met, and the contact effect of hot air and the surfaces of the materials is optimized; due to the gradient temperature control design (separated by baffles) of the three-stage drying area, fine regulation and control of the drying process are achieved, and deformation or quality defects caused by sudden temperature change of materials are avoided.

This invention discloses a personalized and adaptable spot positioning and filter integration design method. Addressing the technical problems of uneven film thickness and poor film formation consistency in existing large-area coating processes, it constructs a dynamic-static synergistic coating control system by combining the dynamic motion mode of the coating target with the static positioning optimization of the substrate and the precise control of static parameters of the coating environment. Simultaneously, it introduces zoned coating compensation, real-time film thickness monitoring feedback, and dynamic trajectory adaptation strategies to achieve uniform deposition of coating materials on large-area substrate surfaces, effectively improving the film thickness consistency, film formation uniformity, and film performance stability of large-area coatings. This invention is convenient to operate, provides precise control, and is compatible with various coating processes such as magnetron sputtering, vacuum evaporation, and ion plating. It can be widely applied to large-area coating production in fields such as flat panel displays, photovoltaic glass, semiconductor wafers, and large-area optical devices.

The present application provides a pyrolysis furnace tube coating material composition and a pyrolysis furnace tube coating and a preparation method thereof. The coating material composition comprises: a first coating material and a second coating material; the first coating material comprises the following components: a catalytically active component, a complexing agent, a buffer and a dispersing agent; and the second coating material is a liquid slurry or a solid particle mixture. The preparation method of the coating comprises: pretreating a substrate surface; loading the first coating material on the pretreated substrate surface, and forming a first coating after atmosphere stabilization treatment; loading the second coating material on the surface of the first coating, and obtaining the coating after high-temperature hot permeation. The pyrolysis furnace tube coating prepared by the coating material composition of the present application has a higher dispersion degree of the catalytically active element, and the catalytically active element is relatively stable; in the repeated use process, the migration phenomenon of the overall elements in the coating is less, and the element loss is lower.

The invention relates to the technical field of coating materials, in particular to a method for preparing an anti-corrosion and wear-resistant iron-based amorphous coating through a laser cladding technology, which comprises the following steps: preparing an iron-based amorphous alloy powder raw material based on a gas atomization method, and pretreating the iron-based amorphous alloy powder raw material; selecting a base material, and pretreating the base material to obtain a finished base material; a laser generator is used for melting the surface layer of the finished product base material and the synchronously fed iron-based amorphous alloy powder raw material to form an amorphous coating, and shielding gas is introduced for cooling to the room temperature; compared with a traditional laser cladding technology, the method has the advantages that drying, moisture removal, protection gas introduction for protection and pore reduction are carried out after the iron-based amorphous alloy powder raw material is prepared, hot isostatic pressing is carried out on the prepared amorphous coating, the corrosion-resistant and wear-resistant iron-based amorphous coating is obtained, and the corrosion-resistant and wear-resistant iron-based amorphous coating is obtained. And pores and microcracks are eliminated, the structure is refined, and the quality of the anti-corrosion and wear-resistant iron-based amorphous coating is improved.

The utility model relates to a handle structure and a door body structure. The handle structure comprises a profile component and a handle component, the matching part is connected to the profile part, and a hand buckling part is formed between the profile part and the matching part; the materials used by the profile component and the mating part are different, and / or the coating materials are different, and / or the colors are different. By means of the arrangement, the handle structure is of a split type structure, the sectional material part and the matching part can be made of coating materials such as leather coating or veneer coating, or the sectional material part and the matching part can be made of different paint colors, or the sectional material part and the matching part can be made of metal materials, wood materials and plastic materials. The handle structure is only split into the sectional material part and the matching part, so that the overall split surface of the handle structure is large, the handle structure is suitable for matching of various materials and colors, the overall effect is simple and not disordered, various user design requirements can be met, the decoration attractiveness is improved, and the user experience is improved.

This invention relates to the field of tunnel concrete lining coating technology, and discloses a surface roughening coating material for hydraulic tunnel concrete lining. The material includes a pre-prepared coating base component, and porous ceramics and zeolite added to the coating base component before construction. The porous ceramics and zeolite are added after pretreatment, the pretreatment steps being: washing with clean water, drying, soaking and stirring in deionized water, allowing the deionized water to flow, and soaking in deionized water in a pressurized tank. The pre-prepared coating base component, after being stirred and produced, is stored in a packaging container and is only opened before construction and thoroughly mixed with the porous ceramics and zeolite. Construction must be completed within 1 hour after mixing. This invention, by adding specifically pre-treated porous ceramics and zeolite, can significantly improve the surface roughness reduction effect of hydraulic tunnel concrete lining, effectively solving the problems of shrinkage and pitting caused by concrete water absorption, reducing surface roughness, and meeting the needs of tunnel use.