341results about "Cement coatings" patented technology

The invention discloses a cement-based aerogel heat preservation and heat insulation coating material for concrete and a spraying construction process of the cement-based aerogel heat preservation and heat insulation coating material, and belongs to the technical field of concrete materials. The coating material is prepared from powder, composite emulsion and water, and the powder is prepared by mixing superfine sand, cement, modified silicon dioxide-carbon nanotube composite aerogel powder, hollow glass beads, nanofibers, graphene nanosheets, an ultraviolet light absorber, a water reducing agent and a defoaming agent. The composite emulsion is composed of an acrylate copolymer emulsion, a polyvinyl acetate-ethylene emulsion, a temperature-sensitive polymer emulsion and a coalescing agent. Based on the multi-stage pore network and multi-component emulsion optimization design and multi-component synergistic effect, the material has good fluidity after being mixed, and has low heat conductivity coefficient, high strength and high toughness after being hardened; the construction technology of high-pressure water flushing and layered spraying is provided, and the method has the advantages of being efficient in construction, stable in quality and the like and can be applied to heat preservation and heat insulation of a concrete structure in a severe environment.

The invention discloses a thermal shock resistant phosphate cement-based steel structure coating, which comprises: a bottom coating, which comprises 80-90 parts of potassium magnesium phosphate cement, 5-10 parts of an inorganic filler, 0.5-2.0 parts of an antifoaming agent, 1.0-3.0 parts of a high temperature resistant auxiliary agent, and 0.5-1.5 parts of reinforced fibers; and the reinforced surface layer is coated on the outer side of the bottom coating and comprises 60-70 parts of potassium magnesium phosphate cement, 5-10 parts of an inorganic salt phase change material, 5-15 parts of a fiber reinforced material, 2.0-5.0 parts of a repairing agent, 0.8-1.5 parts of a fire-resistant additive and 10-20 parts of lightweight aggregate. The invention further discloses a construction method of the thermal shock resistant phosphate cement-based steel structure coating. The phosphate cement-based coating is formed by combining a double-layer gradual change structure, the self-repairing agent and the heat-resistant phase change material, the durability and thermal shock resistance of the coating in a high-temperature environment can be remarkably improved, meanwhile, the excellent self-repairing capacity is achieved, and the service life of the coating is prolonged.

The invention discloses a light spray coating and a construction process thereof. The light spray coating comprises 15-20% of cement, 15-20% of plant particles, 35-40% of building material particles, 15-18% of clay, 5-8% of siliceous superfine powder, 3-5% of cellulose, 3-5% of alumina micropowder and 0.02-0.05% of aluminum powder. The construction process comprises the following steps: S1, mixing and stirring the light spraying material, adding water accounting for about 3% of the total weight of the light spraying material for wetting, forming a semi-dry material, and filling the semi-dry material into a powder tank of a powder spraying machine; s2, a semi-dry method is adopted for spraying, the semi-dry material in the step S1 is fed into a muzzle of a powder spraying gun, atomized water is added into the muzzle, and the semi-dry material is sprayed to a construction part in the sequence of water first and material second; and rubber powder is added into the atomized water. The materials in the spray coating are simple and easy to obtain, the cost is low, the effects of comprehensive reinforcement and no influence on the internal ecology of the soil can be achieved, the construction is simple and rapid, and a construction foundation does not need to be built; the setting time is extremely short, and the construction period is not delayed; the terrain does not need to be considered, the construction surface is smooth, and the original construction part is not changed too much.

The invention discloses a concrete sewage pipeline antibacterial anticorrosive coating material and a preparation method thereof, the concrete sewage pipeline antibacterial anticorrosive coating material is prepared from the following raw materials: water, water supply aluminum sludge ash, a water reducing agent, Portland cement, aggregate and antibacterial agents, the antibacterial agents are three antibacterial agents with different representativeness, respectively zinc oxide ZnO, copper phthalocyanine C32H16CuN8 and dihexadecyl dimethyl ammonium bromide C34H72BrN. Compared with a traditional concrete anticorrosive coating material, the prepared antibacterial anticorrosive coating material for the sewage pipeline has the advantages that the water supply aluminum sludge ash modified cement-based material is used as a carrier, and the antibacterial agent is used as a functional component to be doped to prepare a functional antibacterial coating, so that the microbial corrosion resistance and the stability of the coating are remarkably improved, and the antibacterial anticorrosive coating material is green and environment-friendly, and has a good application prospect. The method is low in cost, simple in process and convenient to prepare.

The invention provides a cementitious cooling coating. The cementitious cooling coating comprises composite cement; a structural filler; a water-absorbing polymer; a water collection material; and water, wherein the mass ratio of the water to the composite cement is 0.4 to 1.2; the mass ratio of the composite cement to the structural filler is 0.4-0.7; the mass ratio of the composite cement to the water-absorbing polymer is 0.01-0.03; and the mass ratio of the composite cement to the water collecting material is 0.05 to 0.3. The cementitious cooling coating can also comprise a dispersing agent, wherein the mass ratio of the composite cement to the dispersing agent is 20-50. The invention also provides a cementitious cooling building material and a cement-based building product containing the cementitious cooling building material.

The invention discloses a vapor-permeable polymer cement waterproof coating special for an outer wall and a preparation method of the vapor-permeable polymer cement waterproof coating. The vapor-permeable polymer cement waterproof coating comprises a liquid material component and a powder material component, wherein the liquid material component comprises water, a modified acrylic emulsion and a first auxiliary agent; and the powder component comprises special cement, a breathable functional material and a second auxiliary agent. According to the waterproof coating disclosed by the invention, the vapor permeability of the polymer cement waterproof coating is realized on the basis of the waterproof performance, and the possibility of cracking and falling of external thermal insulation of an outer wall caused by moisture in a thermal insulation system is reduced.

The invention discloses a nanometer anti-erosion material with alkali response hydrophilic-hydrophobic conversion as well as a preparation method and application of the nanometer anti-erosion material. The alkali-responsive hydrophilic-hydrophobic conversion nano anti-erosion material is prepared from a hydrophobized nano material and an alkali-responsive hydrophilic-hydrophobic conversion polymer material, the hydrophobic nano material is a nano particle with hydrophobicity; the alkali-responsive hydrophilic-hydrophobic conversion polymer is a functional polymer which can respond to change in an alkaline environment, slowly release hydrophobized nanoparticles and simultaneously generate hydrophilic-to-hydrophobic conversion. The alkali-responsive hydrophilic-hydrophobic conversion nano anti-erosion material can be applied to a cement-based material system, including but not limited to maritime work concrete, waterproof mortar, anticorrosive mortar, inorganic artificial stone and other cement-based materials, and the hydrophobicity of pores and pore interfaces of the cement-based materials is changed, so that the corrosion resistance of the cement-based materials is improved, and the corrosion resistance of the cement-based materials is improved. The medium permeation resistance and the corrosion resistance of the cement-based material are improved.

The invention discloses an exposed polymer cement waterproof coating with a permeable crystallization function and a preparation method thereof. The waterproof coating comprises a component A and a component B, the component A comprises acrylic polymer emulsion, fluorocarbon emulsion, methyl silicic acid, soluble inorganic silicate and other auxiliaries; and the component B comprises cement, a filler, a geopolymer, a nanoscale silicon-containing compound, cellulose ether and an optional pigment. The waterproof coating disclosed by the invention has the functions of repairing structural cracks by permeable crystallization in the structure and enhancing the waterproof function of the structure; the high-elasticity and high-strength coating film outside the structure has an external waterproof effect, and the structure is protected; and meanwhile, the comprehensive long-acting waterproof effect is achieved through the self-repairing function when the coating film is broken. The LED lamp has exposure performance, and is particularly suitable for maintenance engineering needing to be exposed and repaired.

The invention belongs to the technical field of coatings, and particularly relates to an aerogel modified reflective insulation MPC coating and a preparation method thereof. The aerogel modified reflective thermal insulation MPC coating provided by the invention is prepared from the following raw materials in parts by weight: 60 to 74 parts of magnesia, 45 to 55 parts of phosphate, 6 to 8 parts of retarder, 31 to 92 parts of thermal insulation filler, 1 to 3 parts of functional additive, 1 to 5 parts of aerogel and 48 to 84 parts of water. The aerogel modified reflective heat insulation MPC coating has excellent reflective heat insulation performance, and also has good constructability and durability.

The invention discloses an alkali-resistant solar interface evaporation material for aquaculture sewage treatment and a preparation method of the alkali-resistant solar interface evaporation material, and relates to the field of energy environment materials. The method comprises the following steps: S1, mixing clay with iron powder, adding water, stirring, rolling, forming and calcining to prepare an iron-containing modified clay skeleton; s2, uniformly mixing attapulgite, montmorillonite, composite alkali-resistant modified plant fibers, Portland cement and water, spraying the mixture on the framework, and solidifying at room temperature to form a heat-insulating water delivery layer; and S3, uniformly mixing carbon black, attapulgite, Portland cement, composite alkali-resistant modified plant fibers and water, spraying the mixture on the heat-insulating water delivery layer, and solidifying at room temperature to form a heat-absorbing evaporation layer. The material disclosed by the invention is good in alkali-resistant stability, high in solar evaporation efficiency, capable of synchronously removing heavy metals, low in raw material cost, simple and convenient in preparation process and suitable for large-scale treatment requirements of breeding sewage.

The invention discloses a modified waterproof coating. Comprising the following components in parts by weight: 60-110 parts of cement; 60 to 160 parts of an acrylate polymer emulsion; 20 to 50 parts of modified diatomite; 20 to 50 parts of silicon nitride; 20 to 30 parts of talcum powder; 5 to 15 parts of a defoaming agent; and 2-10 parts of a silane coupling agent. The waterproof coating can better adapt to deformation of a cement substrate through the modified diatomite, the adaptability of the waterproof coating to different base layers is improved, and the permeation resistance of alkaline substances generated by wall curing is increased. The modified waterproof coating permeates into gaps of a wall surface, when the modified waterproof coating meets alkaline substances on the wall surface, tetraethyl orthosilicate of the modified waterproof coating is rapidly hydrolyzed under the catalysis of alkali to generate nano-scale silicon dioxide particles,-OH groups on the surfaces of the nano-scale silicon dioxide particles react with active Si-H bonds in hydrogen silicone oil, and the modified waterproof coating is formed. Therefore, hydrophobic groups are connected with the surfaces of nano silicon dioxide particles, the protection wall is florified, and the structure of a paint substrate is broken.

The invention discloses a double-effect waterproof tiling coating and a preparation method thereof, and belongs to the technical field of tiling coating preparation. The double-effect waterproof tiling coating is prepared from the following components in parts by weight: 30 to 40 parts of Portland cement, 20 to 30 parts of quartz sand, 8 to 15 parts of a modified waterproof agent, 1 to 2 parts of nano silicon dioxide, 5 to 12 parts of a tackifier, 0.3 to 0.6 part of hydroxypropyl methyl cellulose, 0.2 to 0.5 part of a water reducing agent, 0.1 to 0.3 part of a de-foaming agent and 0.1 to 0.2 part of a preservative. The coating prepared by the method has excellent waterproofness and adhesiveness.

The invention discloses a cement-enhanced super-hydrophobic self-adaptive temperature control coating which comprises a thermochromic bottom layer and a radiation refrigeration surface layer, a primer adopted by the thermochromic coating is prepared from the following components in parts by weight: 3 to 6.6 parts of composite resin matrix, 0.4 to 1.2 parts of filler, 11 to 15 parts of thermochromic powder and 10 to 15 parts of organic solvent; and finish paint adopted by the thermochromic coating is prepared from the following components in parts by weight: 50 to 55 parts of SiO2 dispersion liquid, 2 to 9 parts of white cement slurry, 5 to 8 parts of hydrophobic modifier, 6 to 10 parts of low-surface-energy substance and 7 to 11 parts of migration-anchoring dual-function additive. The coating system disclosed by the invention can realize efficient cooling in a high-temperature environment, can keep thermal insulation performance in a low-temperature environment, has mechanical stability and self-cleaning performance required by long-term outdoor application, and is wide in applicability.

The invention discloses a self-leveling capillary crystalline waterproof coating and a preparation method thereof, the waterproof coating comprises a component A and a component B, the component A comprises water and polyvinyl alcohol, the component B comprises cement, quartz sand, an active crystalline chemical substance and tartaric acid, and the component A and the component B are respectively prepared during preparation; uniformly mixing the components in the component A to obtain the component A; uniformly mixing the components in the component B to obtain the component B, and mixing the component A and the component B during use; the waterproof coating can independently complete sufficient permeation of active crystalline substances through self-water-locking without a maintenance process, can improve the waterproof performance of a concrete base layer, can form a self-waterproof layer, can seal a ventilation channel between concrete and the outside, prevents construction bubbles of a next waterproof or decorative coating from being generated, and improves the waterproof performance of the concrete base layer. In addition, the leveling agent has excellent self-leveling performance and can easily achieve the leveling function on a concrete foundation, for example, waterproof coiled materials can be directly laid on the leveling agent, and extra operations such as polishing and leveling are not needed.

The invention discloses a preparation method of a hydrophobic, flame-retardant, heat-insulating and photo-thermal characteristic coating. The preparation process comprises the following steps: firstly, mixing and stirring water and a binder into slurry A, sequentially adding cement, polymethylhydrosiloxane and a flame retardant, uniformly stirring respectively, then brushing the slurry on the surface of a substrate, drying at room temperature to obtain a primary coating, and polishing the primary coating; mixing a mixed binder, water, ammonia water and a siloxane compound to form a dispersion liquid, adding an oxide and a photothermal conversion filler, uniformly stirring, spraying the composite slurry on the surface of the polished primary coating, and drying at room temperature to obtain the multifunctional coating integrating flame-retardant, heat-insulating, super-hydrophobic and photothermal conversion functions. Cooperative integration of super-hydrophobicity, flame retardance, heat insulation and photothermal conversion performance of the material is built through layer-by-layer functionalization. The multifunctional coating has wide application prospects in the fields of aerospace, ocean engineering, green buildings, power transmission lines and the like.

The present invention discloses a radiation cooling polymer cement coating for recycling opalescent glass powder, and its preparation method and application, belonging to the technical field of coating compositions. The method of the present invention adopts modified opalescent glass powder, modified silicone acrylic emulsion, and is mixed with ordinary Portland cement, quartz powder, rheological agent, and binder. It has the advantages of a wide source of raw materials, low cost, and convenient process operation, which is conducive to scaled production and large-scale application. The prepared radiation cooling polymer cement coating has the characteristics of super hydrophobicity and high absorption rate of infrared radiation of sunlight. It has excellent self-cleaning ability and can effectively reduce the input of heat from sunlight to achieve the effect of radiation cooling. The coating is used to reduce heat input and has good application prospects in the fields of building temperature regulation, electronic equipment heat dissipation, and solar cell cooling.

The invention discloses a high-temperature-resistant heat insulation and sound insulation function integrated amorphous material and a preparation method thereof, and belongs to the technical field of heat insulation and sound insulation protection of marine pipelines and equipment. The materials of the amorphous material with a preferable ratio comprise the binder, the additive, the aerogel particles, the hollow structure material and the reinforced phase material, the materials are treated by a certain process to form the amorphous material with high viscosity, and the amorphous material can play a role in heat insulation and sound insulation when being smeared on the surfaces of pipelines and equipment; and the material can be used at the temperature of 400 DEG C, and has good heat resistance and wide application prospects.

The present disclosure provides a full-dimensional hydrophobic radiation refrigeration cement coating and a preparation method thereof. The main raw materials of the coating are cement, functional fillers, micron / nanofibers, hydrophobic components and water. Unlike conventional hydrophobic surface paint which only has surface hydrophobic self-cleaning function, the full-dimensional hydrophobic radiation refrigeration cement coating of the present disclosure integrates radiation refrigeration and full-dimensional hydrophobicity, and can still maintain excellent self-cleaning and radiation refrigeration performance even after abrasion. The coating has a contact angle with water greater than 150°, and the overall reflectivity and overall infrared emissivity of the atmospheric window are both above 90%.

The invention belongs to the technical field of concrete material corrosion prevention, and discloses a concrete composite coating suitable for a transmission and transformation station structure in a saline soil area and a preparation method thereof.The concrete composite coating is prepared from coating primer and coating finish paint, and the coating primer is prepared from, by mass, 10-14 parts of sodium methylsilanolate, 2 parts of dispersing agent and 86-90 parts of water; the coating finish paint comprises 100 parts of Portland cement, 1 part of nano silicon dioxide, 3 parts of a microencapsulation material, 38 parts of water, 3 parts of a water reducing agent and 0.5-1.5 parts of a fluorine-containing organosilicon compound. According to the design of the composite coating, the compatibility and the synergistic effect of all the layers and the adaptability to the external environment are fully considered, erosion of salinized soil can be effectively resisted by combining materials with different characteristics, falling and stripping of a mortar layer on the surface of a concrete base can be prevented, and therefore stable operation, safety and reliability of an electric power system are guaranteed.

The invention discloses a waterproof anti-cracking JS coating, an emulsion for the JS coating and a preparation method of the emulsion, and belongs to the field of waterproof coatings. The emulsion for the waterproof and anti-cracking JS coating comprises deionized water, n-butyl acrylate, styrene, 2-ethylhexyl acrylate, acrylamide, 1-2 parts of 2-hydroxyethyl acrylate, methacrylic acid, a functional aid, a defoaming agent, an emulsifier, a bactericide, an initiator, an oxidant, a reducing agent, a buffering agent and a pH regulator. According to the emulsion for the waterproof and anti-cracking JS coating, the acrylate monomer and the styrene monomer are matched for use, so that the glass-transition temperature of the emulsion for the waterproof and anti-cracking JS coating is between-30 DEG C and-20 DEG C, and flexibility can be provided for the waterproof and anti-cracking JS coating containing the emulsion; the cracking risk caused by cement shrinkage in the drying and film forming process of the waterproof anti-cracking JS coating is reduced, so that the waterproof anti-cracking JS coating can play a waterproof role for a long time.

The invention discloses a polymer emulsion, a preparation method and an application method of the polymer emulsion in preparation of a thick coating type polymer cement coating. The polymer emulsion is prepared from the following raw materials: a monomer, an emulsifier, an initiator and an auxiliary agent, the monomers comprise styrene, butyl acrylate, 2-ethylhexyl acrylate and functional monomers, and the functional monomers comprise acrylamide, methacrylic acid and beta-acryloyloxy propionic acid; the auxiliary agent comprises a retarder and a dispersing agent. When a thick coating type polymer cement coating prepared from the polymer emulsion disclosed by the invention is prepared into a thick coating film, the thick coating cracking condition of the coating can be overcome, and the open time is good.

The invention provides a cement-based permeable crystallization type waterproof coating which comprises the following components in percentage by weight: 45-60% of cement polymer powder, 2.5-5% of silicic acid powder, 1-2% of a complexing agent, 2-4% of an auxiliary agent, 5-10% of carbohydrate and 20-30% of water, the cement polymer powder comprises Portland cement powder and sulphoaluminate cement powder, the silicic acid powder comprises fluorine silicon crystal acid, silica fume, talcum powder and quartz particles, the complexing agent comprises butyl acrylate or polyacrylate, the auxiliaries comprise high-toughness resin, stearic acid or aluminum stearate and polyester acid vinyl ester or polyester acid vinyl adhesive, and the carbohydrate comprises starch. According to the invention, outside water and other harmful media are prevented from invading the concrete, water-insoluble branch and tendril-shaped crystals are generated in the concrete, pores and micro-cracks in the concrete are sealed, and a rigidity and softness combined process is adopted, so that the invasion of the outside water is effectively blocked, and the effects of water blocking and water prevention are achieved.

The invention discloses a whisker reinforced cement-based anticorrosive coating and a preparation method thereof. The anticorrosive paint is prepared from the following raw materials: sulphoaluminate cement, graded quartz sand, water, silica fume, metakaolin, barium sulfate, a polycarboxylate superplasticizer and modified zinc oxide whiskers. The anticorrosive paint has the advantages of low cost, high curing speed, high temperature stability, high environmental aging resistance and high adaptability to a humid environment, and can obviously improve the apparent flatness of a concrete structure; meanwhile, through the combination of a silica fume-metakaolin-barium sulfate compound system and a zinc oxide whisker three-dimensional enhancement technology, the bonding strength and durability of the coating are greatly improved, the surface of the coating is endowed with the self-antibacterial characteristic, and the coating is low in construction requirement, can be directly constructed on a wet base plane, does not release VOC in the construction process, is healthy and friendly to constructors, and has good application prospects. Therefore, the corrosion inhibitor can be widely applied to corrosion prevention of surfaces of concrete substrates of various sewage treatment structures in sewage treatment plants, and durability of the substrates is improved.

The invention discloses a modified polymer cement-based normal-temperature foaming fireproof coating and a preparation method thereof, and relates to the technical field of fireproof coatings. The modified polymer cement-based normal-temperature foaming fireproof coating comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 15 to 20 parts of cement, 10 to 12 parts of calcium carbonate, 0.3 to 0.9 part of nano titanium dioxide, 30 to 35 parts of polyurethane emulsion, 1 to 2 parts of cross-linking agent, 8 to 12 parts of flame retardant, 1 to 3 parts of foaming agent, 0.5 to 1.5 parts of dispersing agent and 10 to 20 parts of deionized water; the component B comprises the following raw materials in parts by weight: 20-25 parts of a curing agent, 0.1-0.5 part of an organic zinc catalyst and 0.5-1.2 parts of a foam stabilizer; the prepared modified polymer cement-based normal-temperature foaming fireproof coating has excellent fireproof performance, bonding strength and compressive strength.

The present application belongs to the field of indoor ceiling moisture-proof, and discloses an indoor decoration ceiling moisture-proof material and a preparation method. The material comprises liquid material and powder material. The liquid material comprises the following components: acrylic emulsion, epoxy modified water absorbing resin, water and first additive. The powder material comprises the following components: heavy powder material, light filler and second additive, and optionally humidity adjusting functional filler. The ceiling moisture-proof material has the advantages of light weight, easy coating, smooth brushing, moisture absorption, moisture release and condensation water drop prevention in addition to the water resistance and impermeability of traditional polymer cement-based waterproof materials.

This invention provides an acrylic emulsion with a core-shell structure, its preparation method, and its application. The acrylic emulsion with a core-shell structure includes a core and a shell. The raw materials for preparing the shell include a first acrylate monomer, an olefinic unsaturated acid monomer, an anionic emulsifier, a free radical initiator, and a neutralizing agent. The raw materials for preparing the core include a second acrylate monomer, a catalyst, an oxidizing agent, and a reducing agent. Since no acrylamide monomers are added to the monomers used in preparing the acrylic emulsion, the resulting acrylic emulsion is non-neurotoxic and will not harm human health. Furthermore, the specific core-shell structure allows the acrylic emulsion to have a suitable viscosity after being mixed with inorganic powders such as cement, preventing rapid gelation and facilitating construction.

The invention discloses an antibacterial waterproof coating for ceramic tiles and a preparation process thereof, and relates to the technical field of waterproof coatings, including component A and component B, wherein component A includes components: acrylate emulsion, additives; component B is a powder, including the following mass components: 60-80 parts of cement, 7-12 parts of titanium frit, 30-50 parts of titanium dioxide, and 6-10 parts of barium carbonate. The invention prepares an acrylate emulsion by using acrylate compounds as the main polymerizing monomer, and has good water resistance, weather resistance, acid and alkali resistance; adds organic silicon to improve the waterproof performance, bonding performance and durability of the coating; contains a long-chain alkyl structure, which can further improve the water repellency of the coating, and make it have good lubricity, antifouling and mechanical properties. The quaternary ammonium salt obtained by quaternization with dodecyl dimethyl tertiary amine has a broad-spectrum antibacterial property, is not easy to diffuse, and gives the coating good antibacterial ability.

This invention relates to a protective coating material for reinforcing bars based on C7MS4-C5MS3 phosphoaluminate cement, its preparation method, and its application, belonging to the field of civil engineering technology. This invention utilizes organic binders, emulsifying stabilizers, dispersants, and early-strength agents combined with inorganic cementitious materials such as iron-rich phosphoaluminate cement containing the C7MS4-C5MS3 mineral phase to prepare a reinforcing bar coating material that is easy to apply, has strong adhesion, and high durability. This reinforcing bar coating material is mainly suitable for corrosion prevention of reinforcing bars in marine environments. The reinforcing bar coating material prepared by combining organic and inorganic materials exhibits strong adhesion, high resistance to erosion and carbonation, and a dense structure, solving the problems of poor adhesion and easy peeling of traditional inorganic coating materials. Furthermore, the reinforcing bar coating material prepared by combining organic and inorganic materials can significantly improve the corrosion resistance of reinforcing bars in reinforced concrete, extending the service life of the reinforcing bars.

The application discloses a seven-layer gradient function composite repairing construction method for concrete freeze-thaw damage, and the method comprises the following steps: investigating a freeze-thaw damage area, determining damage depth and range, removing all loose, peeled and cracked concrete by using mechanical tools until the base surface is exposed, carrying out rust removal and corrosion prevention treatment on the exposed steel bars, cleaning the interface by using high-pressure water jet, removing dust and debris, and coating, in sequence, a primer, anti-freezing repair mortar, nano-enhanced coating, cement-based anti-freezing, waterproof and corrosion-proof protective coating, alkali-resistant sealing primer and protective coating on the base surface, wherein the protective coating is coated in two layers, the damaged base body is reconstructed in a gradient mode, the structural integrity is restored, a long-acting protection system with the functions of active protection and passive barrier is constructed from inside to outside and with gradient transition of material properties, and the service life of the repaired structure in an extreme environment is significantly prolonged.

The invention discloses a mining closed thin layer spraying material and a preparation method thereof, and relates to the technical field of composite materials. The invention relates to a preparation method of a mining closed thin-layer spraying material, which comprises the following steps: taking butyl acrylate and 2-ethylhexyl acrylate as soft monomers, taking styrene as a hard monomer, using an anionic / nonionic emulsification system, adding carboxyl monomers and modified monomers, and adopting a pre-emulsification semi-continuous seed emulsion polymerization process to prepare the mining closed thin-layer spraying material. Preparing to obtain modified styrene-acrylic emulsion; the modified monomer is an ester monomer with cyclohexyl and tertiary butyl; portland cement clinker, filler and gypsum are mixed and then ground, and a hydraulic cementing material is obtained; mixing the hydraulic cementing material with the flame retardant to obtain powder; and mixing and stirring the modified styrene-acrylic emulsion and the powder according to the mass ratio of 1: 1 to obtain the spraying material. The spraying material disclosed by the invention has excellent sealing performance, flame retardance, insulativity, wear resistance, excellent adhesive force, tensile strength, elongation at break and other mechanical properties, and can meet the requirements of mining sealing engineering on flame retardance and sealing performance.