1771 results about "Antifoam agent" patented technology

The invention relates to the technical field of cement-based repair mortar, and particularly discloses a preparation method of an early-strength quick-hardening anti-carbonization cement-based repair mortar material, which comprises the following steps: (1) uniformly mixing calcium silicate or pseudo-wollastonite and saturated lime water, adding basalt fiber, and carrying out heating reaction, and uniformly mixing the fiber with sodium silicate powder, calcining in a protective atmosphere, uniformly mixing the obtained fiber with saturated lime water, and drying to obtain the anti-carbon modified fiber. And (2) uniformly mixing red mud, silica fume, sodium silicate powder and water, curing, grinding, and calcining the powder to obtain the anti-carbonization additive. And (3) mixing sulphoaluminate cement, fine aggregate, solid waste-based filler, the anti-carbon modified fiber, the anti-carbonization additive, a water reducing agent and a defoaming agent, adding mixing water, and uniformly stirring to obtain the cement-based repairing mortar material. According to the invention, the carbonization resistance of the sulphoaluminate cement-based repair mortar is effectively improved, the durability is improved, and the problem of strength shrinkage in the later period is prevented.

The invention relates to the technical field of adhesives, and discloses an antibacterial mildew-proof water-based adhesive and a preparation method thereof. The preparation method of the antibacterial and mildew-proof water-based adhesive comprises the following steps: reacting 2, 2-dimethylolpropionic acid with castor oil to obtain hyperbranched bio-based polyol; modifying the hyperbranched bio-based polyol by using a modifier to obtain modified bio-based polyol; the preparation method comprises the following steps: preparing a waterborne polyurethane dispersion liquid by taking modified bio-based polyol, a hybrid modified BN / MOF composite material and hexamethylene diisocyanate as raw materials and 1, 4-butanediol as a chain extender; the preparation method comprises the following steps: mixing a waterborne polyurethane dispersion liquid, a wetting agent, a defoaming agent, a thickening agent and water to obtain a component A; an aliphatic curing agent is used as a component B; during use, the component A and the component B are mixed and stirred. The antibacterial and mildewproof water-based adhesive disclosed by the invention has excellent adhesion performance, water resistance, self-repairing performance and lasting antibacterial and mildewproof performance.

The invention relates to the technical field of polyurethane coatings, in particular to a hydrophobic flame-retardant polyurethane coating and a preparation method thereof. The preparation method comprises the following steps: firstly, taking 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and methallyl alcohol as raw materials, and reacting to obtain hydroxyl grafted phosphaphenanthrene; taking 1, 1, 3, 3-tetramethyldisiloxane and methallyl alcohol as raw materials, and reacting according to a molar ratio of 1: 2 to obtain dihydroxy siloxane; then cyanuric chloride, hydroxyl grafted phosphaphenanthrene and dihydroxyl siloxane react according to the molar ratio of 1: 1: (1.5-1.8), and the dihydroxyl-terminated silicon-containing flame retardant is obtained. The preparation method comprises the following steps: mixing a dihydroxyl-terminated silicon-containing flame retardant with polytetrahydrofuran ether glycol to serve as a soft segment, and reacting with isocyanate to obtain a hydrophobic flame-retardant polyurethane emulsion; mixing the hydrophobic flame-retardant polyurethane emulsion, an anti-aging agent, an ultraviolet light absorber, a defoaming agent, kaolin, nano silicon dioxide and talcum powder to obtain the hydrophobic flame-retardant polyurethane coating.

The utility model provides a skid-mounted defoaming agent liquid supply device for glass melting, which is used for spraying a defoaming agent to a white foam area in a melting furnace in the field of glass melting and comprises a skid-mounted seat and a liquid supply device, the electric cabinet module is used for electrically controlling liquid supply work, the storage tank module is used for storing medicaments, the pipeline system is communicated with the storage tank module, the infusion pump module is used for being matched with the pipeline system to add the medicaments into the storage tank module, and the electric cabinet module, the storage tank module, the pipeline system and the infusion pump module are integrally mounted on the prying seat; an electric cabinet, a storage tank module, an infusion pump module, a pipeline system, a flow control valve, a liquid level monitoring valve, a control valve, an adjusting valve and the like are integrated and installed in a skid-mounted mode, so that installation space can be effectively saved, the installation progress is accelerated, materials are saved, standardization can be achieved, and the problems that in the prior art, an antifoaming agent liquid supply system is complex in structure, low in cost and the like are solved. The occupied area is large, the installation difficulty is large, and the construction period is long.

The invention relates to the technical field of petrochemical engineering, and particularly discloses a preparation method of a high-sulfur and high-acid crude oil demulsifier, which comprises the following steps: uniformly mixing 40-60 parts by mass of modified polyether, 25-30 parts by mass of zwitterionic surfactant and 10-12 parts by mass of solvent, heating to 50-70 DEG C, reacting for 1-2 hours, and cooling to room temperature to obtain the high-sulfur and high-acid crude oil demulsifier. Adding 3-8 parts by mass of activated aluminum oxide, 8-16 parts by mass of an antacid and 2-4 parts by mass of a corrosion inhibitor, uniformly mixing, adding 0.5-1 part by mass of a defoaming agent, uniformly mixing, cooling, and standing for layering to obtain a demulsifier; the antacid comprises ethanolamine and zinc oxide. The demulsifier prepared by the invention not only has excellent performance in the aspects of dehydration and promotion of oil-water separation, but also can improve the quality of crude oil and reduce the acid value and the sulfur content to a certain extent.

The invention provides a leakage point pressure difference response high-strength blocking agent based on iron ion dynamic cross-linked latex and a preparation method thereof, and the raw materials comprise the following components in parts: 60-120 parts of latex, 60-120 parts of deionized water, 5-15 parts of an activator, 5-10 parts of a defoamer, 100 parts of a terminator, 100 parts of a stabilizer, 10 parts of a 20% ferric chloride solution, and the balance of water. Rubber particles are dynamically crosslinked through ferric ions, and the plugging strength is remarkably improved. Compared with a traditional differential pressure plugging agent, the plugging strength for small holes with the diameter of 0.5 mm reaches 35.67 MPa and is improved by about 238%, and the plugging strength for large holes with the diameter of 1 mm reaches 9.68 MPa and is improved by about 428%. And the plugging device is suitable for plugging conditions with higher leakage point pressure difference. In addition, the plugging agent can realize rapid and high-strength plugging of an underground pipe column, and provides a more efficient and more reliable solution for well site construction.

The invention relates to the technical field of lubricating oil, in particular to graphene composite rolling oil and a preparation method and application thereof. The rolling oil comprises base oil, branched oleic acid modified graphene containing quaternary ammonium salt, an anti-wear reagent at extreme pressure, an antioxidant, an anti-rust agent and a defoaming agent. Wherein the quaternary ammonium salt branched oleic acid is prepared through a thiol-ene click reaction and a quaternization reaction, and the dispersity, the interface adsorption strength and the high-temperature stability of graphene in a lubricating oil system can be remarkably improved. The product provided by the invention is suitable for rolling lubrication under severe working conditions such as high temperature and high load, and has a wide industrial application prospect.

The invention provides wear-resistant and corrosion-resistant lubricating oil and a preparation method thereof. The wear-resistant and corrosion-resistant lubricating oil is prepared from the following raw materials in parts by weight: 88-92 parts of base oil, 3-6 parts of phosphate and ammonium phosphate co-grafted graphene oxide, 0.5-1 part of a purification dispersant, 0.5-1 part of an antirust agent, 2-4 parts of an antioxidant, 0.5-1 part of a defoaming agent and 0.5-1 part of a pour point depressant. The phosphate and the ammonium phosphate are jointly grafted with the graphene oxide, and the wear resistance and the corrosion resistance of the lubricating oil are synergistically improved by utilizing the'nano bearing 'effect of a phosphate group, an ammonium phosphate group and the graphene oxide; meanwhile, by utilizing the capacity of ammonium phosphate groups for neutralizing acidic substances and the chelation of phosphate groups and combining the high specific surface area and barrier property of the graphene oxide, the anti-corrosion and anti-oxidation effects are further enhanced. Through a multifunctional synergistic effect, the problem that a traditional additive is single in function is solved, and the service life of the lubricating oil in high-temperature, high-load and extreme environments is remarkably prolonged.

The invention relates to a preparation method of a high-precision gel injection pressureless sintering silicon carbide ceramic water jet cutter sand pipe, which comprises the following steps: pouring premixed liquid into a mold, and curing to obtain a green body; the inner mold is taken out of the cured blank, then the outer mold and the blank are put into a polyethylene glycol solution to be dried, the blank shrinks when being dried in the polyethylene glycol solution, and demolding is completed; drying the demolded green body on drying equipment, and carrying out vacuum heating to obtain a dried green body; and carrying out pressureless sintering on the dried blank to obtain the silicon carbide ceramic water jet cutter sand pipe. The premixed liquid comprises a monomer, a cross-linking agent, a dispersing agent, a defoaming agent, modified silicon carbide powder, a sintering aid and tetramethylammonium hydroxide, and the modified silicon carbide powder comprises graphene composite silicon carbide and modified carbon nanotubes. The water jet cutter sand pipe has the effect of improving the product quality of the prepared water jet cutter sand pipe.

The invention relates to the technical field of dispersing agents, and particularly discloses a high-concentration water-based graphene dispersing agent. The high-concentration water-based graphene dispersing agent is prepared from the following raw materials in parts by weight: 25 to 30 parts of a modified nonionic surfactant, 8 to 12 parts of sodium lignin sulfonate, 0.4 to 0.8 part of a de-foaming agent and 90 to 100 parts of de-ionized water, the modified nonionic surfactant is prepared by the following steps: carrying out dehydration esterification reaction on 1-pyrene butyric acid and N-hydroxysuccinimide, carrying out nucleophilic substitution reaction on the obtained product and polyethylene glycol monododecyl ether to obtain modified 1-pyrene butyric acid, and finally polymerizing the modified 1-pyrene butyric acid and n-butyl acrylate. The method is easy to operate, graphene does not need to be subjected to oxidation reduction, the integrity of a graphene sheet layer can be completely kept, and the performance of the graphene can be fully exerted; the prepared graphene dispersing agent realizes efficient dispersing effect, excellent stability and environment-friendly safety characteristics, and provides solid technical support for wide application of graphene in multiple fields.

The invention relates to the technical field of pouring sealant coatings, in particular to a two-component polyurethane circuit board pouring sealant and a preparation method thereof. Comprising a component A and a component B. The component A comprises liquefied MDI, a phosphate flame retardant and a plasticizer. The component B comprises a hydroxyl acrylate oligomer, bio-based polyol, a defoaming agent and a catalyst, the viscosity of the hydroxyl acrylate oligomer at the temperature of 25 DEG C is 8000-15000 mPa.s, and the hydroxyl value of the hydroxyl acrylate oligomer is 100-150 mgKOH / g. The viscosity of the hydroxyl acrylate oligomer at 25 DEG C is limited to be 8000-12000 mPa.s, and the hydroxyl value is 100-140 mgKOH / g, so that the mechanical properties and aging resistance of the pouring sealant can be improved at the same time.

The invention discloses a coating type high-molecular flame-retardant material. The composite material is prepared from the following components: organic silicon modified epoxy resin, a bio-based castor oil derivative, hydroxyapatite, carbon nanofibers, expanded graphite, ammonium polyphosphate, zinc borate, nano silicon dioxide, molybdenum oxide, microencapsulated red phosphorus, magnesium hydroxide, melamine cyanurate, aluminum diethylphosphinate, pentaerythritol, trihydroxymethyl phosphine oxide and a silane coupling agent. The coating is prepared from a titanate coupling agent, stearic acid, polyethylene glycol, 2, 6-butylated hydroxytoluene, triphenyl phosphite, 2, 4-dihydroxybenzophenone, sebacic diester, polytetrafluoroethylene micro powder, a modified polydimethylsiloxane flatting agent, organic montmorillonite, a polyether modified silicon defoaming agent and a solvent. The invention has the beneficial effects of high flame retardant efficiency, environmental friendliness, excellent comprehensive performance and excellent processability.

The invention provides a carbon dioxide absorbent, an absorption method and a preparation method of the carbon dioxide absorbent, and belongs to the field of carbon capture. The carbon dioxide absorbent comprises 20% of a decarburization solvent and 80% of deionized water, and the decarburization solvent is composed of a main absorbent, an activating agent, an antioxidant and a defoaming agent; the main absorbent is 100 parts by mass, and 100 parts by mass of the main absorbent is composed of 65-85 parts by mass of ethanolamine and 15-35 parts by mass of N-methyldiethanolamine; 7 to 9 parts by mass of an activating agent and 0.4 to 0.8 part by mass of an antioxidant. The invention aims to solve the problem of poor carbon dioxide absorption effect of a carbon dioxide absorbent in the prior art. The technical effects of high carbon dioxide absorptivity, low corrosivity, weak oxidative degradability and the like are achieved.

The invention provides a whisker-based insulating anticorrosive coating and a preparation method thereof, and belongs to the technical field of insulating materials, the insulating anticorrosive coating comprises a component A and a component B. The component A comprises, by weight, 60-80 parts of an organosilicon modified copolymer, 0.5-2 parts of a dispersant, 0.5-5 parts of an antifoaming agent, 0.1-1.0 part of an adhesion promoter, 0.1-1.0 part of a film forming aid, 1-3 parts of a rheological aid and 20-40 parts of a filler; and the component B comprises 95-99 parts of a curing agent and 1-5 parts of a defoaming agent. According to the invention, the boron nitride whisker is subjected to hydroxylation modification and grafted into a long-chain structure of tetramethyl dihydroxy disiloxane, and then is subjected to a polymerization reaction with epoxy resin to obtain an organosilicon copolymer, so that the dispersity of boron nitride in a coating system and the flexibility of the coating system are effectively improved; the one-time film forming thickness of the insulating anticorrosive paint can reach the millimeter level by adopting a brush coating or spray coating mode, so that the requirement of high voltage resistance of the coating is met.

The present invention relates to the field of corrosion prevention materials. Disclosed are anticorrosive oil and an anticorrosive material, and preparation methods therefor and the use thereof. The anticorrosive oil contains a monoalkoxy titanate, a dihydroxypropyl octadecanoate, an organosilicon defoaming agent, an antioxidant, modified nano silicon dioxide, nano titanium dioxide, graphene and aluminum tripolyphosphate, wherein the hydroxyl content of the modified nano silicon dioxide is 0.1-0.5 / nm2, and the particle size of the modified nano silicon dioxide satisfies: calculated on the basis that the particle size interval width is 5 nm, the range of particle size having the maximum proportion is 10-15 nm, and the proportion thereof is 45-55 wt%. There are no gaps between the layers of an anticorrosive material formed by means of the anticorrosive oil of the present invention, and the anticorrosive material has good sealing and good corrosion resistance, impact resistance and ultraviolet aging resistance, and can provide long-acting corrosion prevention for ocean steel piles.

The invention discloses a high-stability antirust emulsified cutting fluid, which is composed of the following components by mass: 0.2-1% of a copper corrosion inhibitor, 5-10% of organic amine, 3-10% of an organic acid, 5-10% of an emulsifier, 35-45% of base oil, 1-3% of a preservative, 0.1-1% of an acidic corrosion inhibitor, 10-20% of a lubricating additive, 1-3% of a coupling agent, 0.5-2% of an antifoaming agent, and the balance of water. The emulsifier is composed of a nonionic surfactant and an anionic surfactant, and the acidic corrosion inhibitor is an imidazole compound. Compared with the existing emulsified cutting fluid, the emulsified cutting fluid has high stability in high-temperature, low-temperature, high-hardness water and slightly acidic systems, has good antirust, lubricating, cooling and cleaning performances, can effectively improve the processing efficiency, prolong the service life of equipment and improve the quality of workpieces, and is especially suitable for cutting of ferrous metals.

The invention relates to the technical field of mortar, in particular to cement self-leveling anti-crack and anti-seepage mortar and a preparation method thereof. The cement self-leveling anti-cracking and anti-seepage mortar is prepared from the following raw materials in parts by mass: 50 to 70 parts of Portland cement, 70 to 90 parts of quartz sand, 5 to 10 parts of nano metakaolin, 1 to 3 parts of calcium sulfate, 5 to 10 parts of polyethylene fiber, 1 to 2 parts of nonionic surfactant, 1 to 2 parts of silane coupling agent, 3 to 8 parts of composite basalt fiber, 0.5 to 1.5 parts of polycarboxylate superplasticizer and 1 to 3 parts of defoaming agent. 1-3 parts of hydroxypropyl methyl cellulose, 1-2 parts of a retarder and 0.5-1.5 parts of a coagulant. The mortar material has good anti-cracking performance and anti-seepage performance and excellent durability, can effectively solve the problem that the anti-cracking performance and the anti-seepage performance of the mortar material in the prior art cannot meet the environmental requirements, and is suitable for large-scale popularization and application.

The invention discloses a carbon dioxide injection and production well cementation cement paste and a preparation method and application thereof, the well cementation cement paste comprises the following components by weight: 95-105 parts of oil well cement, 44-48 parts of water, 4-6 parts of a polymer emulsion, 4-6 parts of a self-repairing material, 1.5-2.5 parts of a drag reducer, 0.5-1.5 parts of a fluid loss agent and 0.2-0.8 part of an antifoaming agent; wherein the polymer emulsion is an emulsion which is formed by taking methyl methacrylate, vinyl trimethoxy silane and propylene carbonate as monomers through polymerization; the self-repairing material is a microcapsule in which thiobacillus ferrooxidans thalli and bacillus amyloliquefaciens thalli are embedded. The well cementation cement paste keeps good strength and relatively low permeability in a carbon dioxide environment, is good in corrosion resistance and has self-repairing capability.

The invention belongs to the technical field of building materials, and discloses an early-strength polymer modified cement-based grouting material and a preparation method thereof. The grouting material disclosed by the invention is prepared from the following raw materials in parts by weight: 100 to 115 parts of a cementing material, 100 to 115 parts of river sand, 20 to 23 parts of water, 2 to 2.5 parts of a water reducing agent, 0.02 to 0.04 part of an expanding agent, 0.22 to 1.76 parts of an acrylic emulsion and 0.04 to 0.08 part of a de-foaming agent, wherein the cementing material comprises 71-81 parts of Portland cement, 9-19 parts of sulphoaluminate cement, 6-8 parts of silica fume and 11-15 parts of fly ash microbeads. The early-strength, high-strength and high-fluidity cement-based grouting material can be obtained under the conventional curing condition by adopting the combined action of the acrylic emulsion polymer, the Portland cement and the sulphoaluminate cement, the plastic expanding agent, the polycarboxylate superplasticizer and the defoaming agent, and has good economic benefits and practical values.

The invention discloses high-performance anti-wear engine lubricating oil as well as a preparation method and application thereof. The high-performance anti-wear engine lubricating oil is prepared from the following raw materials: self-developed lubricating oil base oil, poly-alpha-olefin, zinc dialkyl dithiophosphate, calcium sulfonate, polyisobutylene succinimide, an antioxidant, polymethacrylate, an organic molybdenum complex, a de-foaming agent and a pour point depressant. The preparation method comprises the following steps: 1) synthesizing 9, 10-bis (2-tert-butyl-4-methylphenoxy) trimethylolethane stearate as base oil of the lubricating oil; and 2) mixing the base oil with other assistants to obtain the high-performance anti-wear engine lubricating oil. According to the preparation method, novel-like synthetic ester oil is firstly prepared, a phenol group and a large steric hindrance substituent group are introduced into a polymer, the anti-oxidation function is directly built in base oil molecules, meanwhile, super-strong heat resistance is achieved, and finally the high-performance anti-wear engine lubricating oil is obtained and can be applied to high-end application scenes such as aero-engines or gas turbines.

The present invention discloses a wire cutting fluid containing organic / inorganic additives and a preparation method thereof. The wire cutting fluid of the present invention comprises a wire cutting mother liquor containing organic / inorganic additives and water; wherein the wire cutting mother liquor containing organic / inorganic additives comprises engine oil, a primary emulsifier, an auxiliary emulsifier, a rust inhibitor, a defoamer, an organic additive, an inorganic additive and water. The cutting fluid mother liquor of the present invention is prepared by mixing a basic emulsion with organic additives and inorganic additives having synergistic effects, and is a water-based cutting fluid having the advantages of good cooling, rust prevention, electrical conductivity and low pollution.

The invention discloses a high-water-resistance waterborne polyurethane marine coating and a preparation method thereof, and belongs to the field of marine paints.The coating comprises a component A and a component B. The component A is prepared from, by weight, 50-60 parts of waterborne organic silicon modified polyurethane resin, 10-20 parts of fluorocarbon resin emulsion, 15-20 parts of nanometer reinforcing filler, 0.5-5.0 parts of polyurethane thickening agent, 0.1-0.3 part of defoaming agent, 0.2-0.5 part of wetting agent and 0.3-0.8 part of anti-settling agent; 0.3 to 0.8 part of a mildew preventive; and the component B comprises the following components in parts by weight: 0.3-1.0 part of an aziridine cross-linking agent and 2-3 parts of a dehydrating agent. When in use, the component A and the component B are mixed according to the weight ratio of 5: 1 and then are sprayed or rolled to form a coating with the dry film thickness of 80-150 microns, and the prepared high-water-resistance waterborne polyurethane marine coating has the advantages that the water absorption rate is reduced, the water resistance and the mechanical strength are improved, and the waterborne polyurethane marine coating with high water resistance, hardness and biological adhesion resistance is realized; meanwhile, low VOC and normal-temperature curing are realized, so that the application range of the coating is wider.

The invention provides a dilution buffer solution for chemiluminescence detection of a blood sample. The dilution buffer solution contains 0.05 to 1 weight percent of plasmin and 0.005 to 0.02 weight percent of a de-foaming agent. The dilution buffer solution provided by the invention can reduce the jump value phenomenon in chemiluminescence detection of a blood sample, especially a repeatedly frozen and thawed blood sample, so that a correct and reliable detection result is provided for clinic, and the clinical detection time can be saved.

The invention relates to the technical field of guide rail oil, in particular to a phosphorus-free environment-friendly guide rail oil composition which comprises the following components in percentage by weight: 0.2-0.8% of a composite additive; 0.1-0.3% of an antirust agent; 0.2 to 0.5 percent of an antioxidant; 0.01%-0.1% of a defoaming agent; and the balance of mineral base oil. Compared with the prior art, the non-phosphorus guide rail oil composite additive is characterized in that 1, the non-phosphorus guide rail oil composite additive is prepared from a fatty acid ester oiliness agent mixture, and the components are non-phosphorus; 2, a mercapto-thiadiazole derivative is adopted, so that a mercapto-thiadiazole protective coating is formed on a friction surface, the anti-corrosion and anti-rust effects are achieved, and the components are phosphorus-free; 3, a phenol type antioxidant is adopted as an antioxidant, so that the creeping phenomenon of a machine tool guide rail caused by loss of lubricity and astringent friction surface due to the fact that an oil product generates oxide in the operation process and colloid is adhered to the metal surface is avoided, and the component is non-phosphorus; the prepared guide rail oil is free of phosphorus, phosphorus reduction emission of enterprises is achieved, and the ecological environment of a water body is protected.

The invention provides an efficient and environment-friendly reverse osmosis membrane scale inhibition cleaning agent based on a composite formula, and relates to the field of reverse osmosis membrane cleaning. Comprising effective components and water, and the effective components comprise the following raw materials in percentage by mass: 10-15% of a surfactant, 10-15% of a sterilizing agent, 30-40% of a composite chelating agent, 10-20% of slow-release organic acid, 5-10% of compound enzyme, 5-10% of an oxidizing agent and 1-5% of a defoaming agent; the composite chelating agent is a compound which takes attapulgite and montmorillonite as carriers and is loaded with hydroxyethyl ethylenediamine triacetic acid trisodium salt; the slow-release organic acid is citric acid modified by carboxymethyl chitosan. The cleaning agent provided by the invention contains the composite chelating agent, the slow-release organic acid, the compound enzyme, the surfactant, the sterilizing agent and the like in effective components, is prepared into the cleaning agent with water, has the effect of efficiently cleaning the reverse osmosis membrane, and is high in cleaning efficiency and small in damage to the reverse osmosis membrane.

The invention relates to the technical field of carbon capture, and discloses a modified carbon capture solvent and a preparation method thereof.The modified carbon capture solvent is prepared from, by mass, 40-55 parts of multi-component organic alcohol amine, 0.1-0.3 part of antioxidant, 0.05-0.5 part of chloride ion capture agent, 0.05-0.2 part of corrosion inhibitor, 0.05-0.1 part of defoaming agent and demineralized water, and the multi-component organic alcohol amine is prepared from 25-30 parts of main absorbent and 15-25 parts of auxiliary modifier. The absorption performance of the modified carbon capture solvent is improved, the oxidative degradation is reduced, the corrosivity is weakened, the foaming tendency is reduced, the operation efficiency and the safety coefficient of a carbon capture device are comprehensively improved, and the application problem of a current coal-fired flue gas chemical absorption method carbon capture technology is effectively solved.

The invention discloses a double-liquid magnesium phosphate early-strength high-strength grouting material and a preparation method thereof.The grouting material is composed of a liquid A and a liquid B. The liquid A is composed of powder A and water in parts by weight and comprises dead burned magnesia powder, a defoaming agent, steel slag powder, a retarder I and water, and the liquid B is composed of powder B and water in parts by weight and comprises powder B and water in parts by weight. Wherein the monopotassium phosphate, the superfine powder, the polymer rubber powder, the retarder II and the water have the advantages that the stirring time is shortened, the setting time is controllable, the flowability is good, the repair requirement can be met more quickly, the construction period is shortened, and the cane sugar and the borax are used as the retarders, so that the setting time can be controlled, and the early strength can be improved; surplus phosphate in a grouting material matrix is consumed by using the steel slag powder, so that some amorphous gel products can be generated, and the mechanical property is improved; the redispersible latex powder is utilized to form a polymer film in the slurry to wrap a hydration product, so that the water resistance is improved, and the synergistic modification effect is achieved.

The invention belongs to the technical field of seawater desalination equipment, and particularly discloses a photothermal conversion coating capable of being used for a solar evaporator, a preparation method of the photothermal conversion coating and the solar evaporator. The specific preparation method of the photothermal conversion coating comprises the following steps: firstly, mixing the carbon nano tube, the black titanium dioxide, the dispersing agent, the defoaming agent and the volatilizable solvent to obtain mixed slurry; and then spraying the mixed slurry for multiple times by utilizing a hot air-assisted air spraying method to obtain the photothermal conversion coating for the solar evaporator. And the thickness is 30-80 [mu] m. The solar evaporator can be obtained by sequentially spraying waterborne polyurethane and a photothermal conversion coating on the substrate material with the water absorption rod. The prepared photothermal conversion coating has high hydrophilicity and high light absorption capacity, and the solar evaporator has high evaporation rate.

The invention discloses a preparation method of a noise-reducing anti-corrosion multifunctional coating, which comprises the following steps: mixing a polydimethylsiloxane prepolymer with a curing agent, casting on a glass sheet, curing, demolding to obtain a film substrate, and carrying out laser perforation treatment on the film substrate to obtain a low-frequency noise-reducing film substrate; taking the low-frequency noise reduction film substrate as a directional receiving plane, and performing electrostatic spinning treatment to obtain the low-frequency noise reduction film; uniformly mixing aliphatic isocyanate, polyether polyol, a chain extender, a catalyst, a conductive filler, a heat-conducting filler, porous titanium dioxide, a defoaming agent, a dispersing agent and a latent curing agent, and treating to obtain an anti-corrosion damping coating; the surface of a target base body is sequentially coated with the anti-corrosion damping coating, the low-frequency noise reduction film and the anti-corrosion damping coating, and the noise reduction and anti-corrosion multifunctional coating is obtained; the problems that in the prior art, due to separation of low-frequency noise reduction and anti-corrosion functions, construction is complex, cost is high, the effect is limited, and signal transmission quality and equipment durability are difficult to consider at the same time are solved.

The invention discloses a method and a system for repairing freeze-thaw damage of power plant concrete. According to the invention, the combination of Portland cement and nano-silica in the repairing material enhances the compactness of concrete and reduces the number of capillary pores, and the silane coupling agent significantly improves the bonding strength between the repairing material and original concrete and ensures the long-term stability of a repairing layer; the alkali activator sodium hydroxide accelerates the hydration reaction of the cement, and improves the early strength and durability of the repair material; the antibacterial agent benzalkonium bromide effectively inhibits the growth of bacteria, prevents microorganisms from eroding the concrete, and prolongs the service life of the repair structure; the defoaming agent alkyl sulfate reduces bubbles in the repairing material and improves the compactness and impermeability of the concrete; tiny air bubbles are introduced into the air entraining agent polyethylene wax, so that the freezing resistance and the crack resistance of the concrete are enhanced, and the high efficiency and the reliability of a repair project in a complex environment are also ensured.