246 results about "Methyl silicone" patented technology

The invention discloses a wear-resistant high-gloss nano liquid, a wear-resistant high-gloss ceramic tile and a preparation method of the wear-resistant high-gloss ceramic tile, and belongs to the technical field of ceramic manufacturing. The wear-resistant high-gloss nano liquid at least comprises a component A, a component B and a component C which are independently subpackaged, wherein the component A comprises large-particle silica sol, boric acid, sodium methyl silicate, carboxymethyl cellulose sodium, a boronizing stabilizer and the balance of water; the component B comprises a boronizing stabilizer and the balance of water-based modified silicone oil; and the component C is wax emulsion. Through systematic material and process innovation, the ceramic tile which is high in gloss, strong in antifouling property, durable in wear resistance and high in transportation performance is prepared, and the market requirements of surface treatment materials which are high in performance, low in cost and easy to transport are met.

The invention discloses geopolymer cement based on coal gangue activation reaction as well as a preparation method and application thereof, and relates to the technical field of building materials. The invention relates to a coal gangue concrete, which is prepared from the following raw materials in percentage by mass: 50 to 70 percent of activated coal gangue powder, 5 to 15 percent of alkali activator, 10 to 30 percent of auxiliary cementing material and water, wherein the water accounts for 30 to 40 percent of the total mass of the activated coal gangue powder, the alkali activator and the auxiliary cementing material. Through a composite activation process of medium-temperature calcination decarburization and superfine grinding, the activity of silicon-aluminum components in the coal gangue is effectively excited, the reaction efficiency is remarkably improved, the mixing amount of the coal gangue reaches 50%-70%, the resource utilization rate of solid waste is greatly increased, and efficient activation and resource utilization of the coal gangue are achieved. By adopting the methyl sodium silicate and sodium silicate composite activator, the reaction rate and the product structure are regulated and controlled, and the workability and the setting and hardening behaviors of slurry are improved, so that the obtained geopolymer cement has relatively high early and later strength and excellent durability.

The application relates to the technical field of cosmetics, in particular to a high-concealment makeup-maintaining air cushion and a preparation method thereof. A film forming agent in the high-concealment makeup-maintaining air cushion comprises the following: trimethylsiloxy silicate 5-7 parts, isododecane 0.3-0.7 parts, and acrylic acid (ester) / polymethyltrimethicone methacrylate copolymer 2-3 parts. A colorant comprises the following raw materials in parts by weight: titanium dioxide 5-7 parts, silica 0.8-1.2 parts, mica powder 5-7 parts, CI 77492 0.4-0.8 parts, aluminum hydroxide 0.8-1.2 parts, CI 77491 0.4-0.6 parts, triethoxyl octyl silane 0.8-1.2 parts, and CI 77499 0.3-0.5 parts. The particle size of the titanium dioxide at least comprises any two of 4 nm, 30-50 nm and 200-260 nm. The air cushion has the advantages of prolonging the makeup-maintaining time of the air cushion and improving the concealment effect.

The application relates to the technical field of building materials, and discloses a permeable crystalline self-healing waterproof material for concrete self-waterproofing, which is prepared from the following raw materials in parts by weight: 20-30 parts of sodium-based bentonite, 20-50 parts of sodium methyl silicate, 4-6 parts of a penetrating agent, 8-12 parts of a sulphoaluminate cement, 15-18 parts of a silicone zirconium, and 2-5 parts of a complexing agent; the complexing agent is composed of 2-[3-(4-pentylphenyl)prop-2-enylamino]benzoic acid and sodium ethylenediaminetetraacetate. The above technical scheme solves the problem of low mechanical performance and waterproofness of concrete in the prior art.

The invention relates to the technical field of waste gas treatment, and particularly discloses waste gas treatment liquid for treating large-air-volume low-concentration waste gas through a water-based method. The waste gas treatment liquid for treating the large-air-volume low-concentration waste gas through the water-based method comprises a surfactant, a defoaming agent, a dissolution accelerant and water. Wherein the surfactant can be selected from any one or more of polyoxyethylene alkyl ether, polyoxyethylene alkyl ether and polyoxyethylene fatty acid ester; the dissolution accelerant can be selected from any one or more of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and triethylene glycol monobutyl ether; the defoaming agent is any one or more of butanol, dimethyl silicone oil, silicone and polyether modified polysiloxane. When the waste gas absorption liquid obtained in the invention is used for treating waste gas, the absorption efficiency of methanol, butanol, benzene, toluene, xylene, ethyl acetate, dichloromethane and acetone is obviously improved, and the absorption efficiency of the waste gas absorption liquid on aromatic hydrocarbon, halogenated hydrocarbon, alcohol, ketone and ester pollutants is improved.

The invention relates to a medical organic silicon pressure-sensitive adhesive with antibacterial performance and a preparation method thereof, and the preparation method comprises the following steps: firstly mixing 2-5 parts of a surfactant and 0.5-1.5 parts of an antibacterial group, and then uniformly stirring at 2000-2500rpm; and adding a mixture of 10-20 parts of methyl vinyl silicone rubber, 0.5-2 parts of hydrogen-containing silicone oil, 40-50 parts of a solvent, 5-20 parts of vinyl MQ silicon resin, 20-35 parts of methyl MQ silicon resin, 0.04-0.4 part of a platinum catalyst and 0.03-0.3 part of an inhibitor into the reactor, and stirring for 4-6 hours to prepare the medical organic silicon pressure-sensitive adhesive with the antibacterial property. The medical organic silicon pressure-sensitive adhesive with the antibacterial property, prepared by the method, has good antibacterial property and cohesiveness, and is simple in process, high in production efficiency, low in cost and convenient to popularize and apply.

The invention discloses high-durability quick-hardening concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw materials: aluminoferrite cement, vitreous calcium aluminate clinker, a coagulant nucleation agent, a nano hybrid siliceous material, a calcium-magnesium composite expanding agent, a self-healing agent, a hydration heat regulating agent, a water reducing agent, an early strength agent, a defoaming agent, a thickening agent, a retarder, an air entraining agent and aggregate. The coagulating nucleating agent is prepared from semi-hydrated gypsum, ferrous sulfate and aluminum potassium sulfate; the nano hybrid siliceous material is prepared by reacting acidic silica sol with sodium methyl silicate at 40-60 DEG C for 1-3 hours. According to the high-durability quick-hardening concrete and the preparation method thereof, the iron aluminate cement, the vitreous calcium aluminate clinker, the coagulant nucleation agent, the nano hybrid siliceous material, the calcium-magnesium composite expanding agent, the self-healing agent and the hydration heat regulating agent are utilized to form a brand-new high-durability and high-adaptability quick-hardening system. The mechanical property, the volume stability and the durability are comprehensively superior to those of the traditional quick-hardening concrete.

A method for preparing methyl silicone resin for high-temperature mica boards includes: (1) Solution A is a mixture of methyltrimethoxysilane, dimethyldimethoxysilane, and epoxysilane coupling agent, which account for 87%-95%, 3%-7%, and 2%-6% of the total amount of A, respectively; (2) Adding 0.5-1.0 times the amount of benzene solvent, 0.2-0.3 times the amount of isopropanol, and adding 0.5%-1% of the total amount of A acidic catalyst to obtain solution B; (3) Heating B to 70℃-80℃, and uniformly adding deionized water, and adding... The time is controlled at 2-3 hours. After the addition is completed, continue stirring for half an hour to obtain solution C. The amount of deionized water is 40%-50% of the total amount of A. (4) Transfer C to a separatory funnel and let it stand to separate into layers. The lower layer of methanol solution is purified by distillation, and the upper layer of silanol solution is washed with water until neutral to obtain solution D. (5) Heat D and reflux for condensation reaction. Maintain the temperature at 130℃-140℃ for half an hour, then cool to room temperature and add benzene solvent to form a 50%-60% concentration of methyl silicone resin for high-temperature mica boards. The benzene solvent content is 40%-50%. It is environmentally friendly, has a simple process, excellent bending resistance, and good moisture resistance.

The invention relates to a preparation method of a hydrolysis modified organic silicon high-temperature-resistant anticorrosive coating, and belongs to the technical field of anticorrosive coatings. The preparation method comprises the following steps: heating 1, 1 '-bis (dimethylsilyl) ferrocene, methylbenzene, chloroplatinic acid, 2, 2, 3, 3, 4, 4, 4-heptafluorobutyl acrylate and bis-(2-methylallyl) cyclooctyl-1, 5-diene ruthenium, and reacting to obtain an intermediate product 1; weighing methyltrimethoxysilane, phenyltrimethoxysilane and the intermediate product 1, uniformly stirring and mixing, slowly dropwise adding diluted hydrochloric acid, hydrolyzing, and heating to react, so as to obtain modified silicon resin; adding the modified silicon resin into petroleum ether, and adding silicone oil, an organic tin catalyst, a bis-ammonia coupling agent, filler and a curing agent to obtain the anticorrosive paint.

The invention discloses a resin composition, conformal coating and application thereof. The resin composition comprises the following raw materials: organic silicon resin, silicone oil, an adhesion promoter and a solvent. The organic silicon resin comprises at least one of methyl silicon resin, phenyl silicon resin, methyl vinyl silicon resin, methyl phenyl silicon resin or methyl hydrogen silicon resin; the silicone oil comprises at least one of methyl silicone oil, hydroxyl silicone oil, vinyl-terminated silicone oil, phenyl silicone oil, methyl phenyl silicone oil or hydrogen-terminated silicone oil; the mass ratio of the organic silicon resin to the silicone oil is (1.7-5): 1. Specific organic silicon resin is adopted as a film-forming framework material and combined with specific silicone oil, the specific organic silicon resin and the specific silicone oil are compounded according to a certain mass ratio, the internal stress and hardness of a film layer can be effectively improved, the compactness and the protection effect of the film layer are improved, and the resin composition which is low in internal stress, soft in film layer and high in curing speed is obtained and can be used for preparing conformal coating. And a good protection effect is achieved in electronic products such as printed circuit boards and the like.

The application discloses a kind of flame-retardant mildew-proof prepolymer, transparent flame-retardant mildew-proof silicone sealant and preparation method thereof.The flame-retardant mildew-proof prepolymer is prepared from raw materials including the following components by weight: mildew-proof agent 0.5-10 parts, flame retardant 20-50 parts, tackifier composition 0.2-2 parts;The tackifier composition is composed of alkyl acetoacetate, trimethylsilyl ethyl acetate, 3-isocyanate propyl trimethoxysilane and polyether silicone oil.The transparent flame-retardant mildew-proof silicone sealant is prepared from raw materials including the following components: alkyl alkoxy-terminated polydimethylsiloxane, white carbon black, the flame-retardant mildew-proof prepolymer, crosslinking agent, catalyst, coupling agent.The transparent flame-retardant mildew-proof silicone sealant prepared by the application not only has very high transparency, but also has excellent flame-retardant effect, long-lasting mildew-resistant and antibacterial properties, and good bonding stability and mechanical strength.

This invention relates to a polyurethane-modified silicone protective material for the outer wall of wind turbine towers, and discloses a method for preparing the same material. The material is prepared by mixing acrylate-hedged phenol-modified trimethyl silicone oil, isocyanate-modified polyether polyol polyurethane, ultrafine silica, nano-alumina, short-fiber glass, triethylamine, benzoyl peroxide, dioctyl phthalate (DOP), phthalocyanine UV absorbers, dibutyltin diethylene (DDBT), and imidazole antifungal agents in a specific weight ratio. This material exhibits excellent weather resistance, mechanical strength, heat resistance, UV resistance, and antifungal properties, making it particularly suitable for the protection of wind turbine towers. The preparation method ensures the stability and consistency of the material's performance by precisely controlling the proportions of each component and the curing conditions. This material effectively improves the UV resistance, corrosion resistance, weather resistance, and overall durability of wind turbine towers, extending their service life and reducing maintenance costs. This invention provides a high-performance protective material for the outer wall of wind turbine towers, which has significant engineering application value. Especially in environments with long-term high humidity, low temperature, and strong ultraviolet radiation, it can significantly improve the stability and service life of the tower. This polyurethane-modified silicone protective material exhibits excellent protective performance in demanding application environments such as wind turbine towers, and has broad market application prospects.

The invention discloses a high-thermal-conductivity ultrathin silica gel gasket and a preparation method thereof, and belongs to the technical field of thermal conductive materials. The high-heat-conductivity ultrathin silica gel gasket is prepared from silicon rubber, vinyl silicone oil, MQ silicon resin, a coupling agent, dimethyl silicone oil, hydrogen-containing silicone oil, an inhibitor, a catalyst and heat-conducting powder according to specific mass parts, wherein the heat-conducting powder is prepared by compounding sphere-like aluminum oxide and multi-particle-size spherical aluminum oxide; by accurately controlling the performance parameters of each component and the particle size distribution and mass ratio of the heat-conducting powder, collaborative optimization of the heat-conducting property, the processing property and the structural stability is realized. The heat conductivity coefficient of the prepared high-heat-conductivity ultrathin silica gel gasket is larger than or equal to 5.0 W / (m.K), the thickness can be as low as 0.25 mm, the heat resistance is smaller than or equal to 0.21 K.in / W, the breakdown voltage is larger than or equal to 3.7 kV, needle holes and stripping phenomena do not exist in the surface, and the high-heat-conductivity ultrathin silica gel gasket meets the heat dissipation requirement of precise electronic equipment. The preparation method is simple in process, high in controllability and suitable for industrial production.

A film-forming composition and a lip makeup product comprising same. The film-forming composition comprises the following components: a phenyl silicone oil and a film-forming agent, wherein the phenyl silicone oil comprises two or more of diphenyl dimethicone, trimethyl pentaphenyl trisiloxane, phenyl trimethicone and trimethylsiloxyphenyl dimethicone, and the viscosity of the phenyl silicone oil at 25°C is 50 mPa•s to 500 mPa•s; and the film-forming agent comprises at least one of hydrogenated polyisobutene and polyisobutene, and the viscosity of the film-forming agent at 75°C is 1500 mPa•s to 2500 mPa•s. The mass ratio of the phenyl silicone oil to the film-forming agent is (2-5):1. The film-forming composition is applied to a formulation system of a lip makeup product, and can reduce the phenomena of cup staining, color fading, etc. of the lip makeup product.

The invention belongs to the technical field of coating protection, and particularly relates to a preparation method of a single-component high-temperature fast curing silver-aluminum polymer coating applied to the surface of a coating layer. Comprising 175-180 parts of modified epoxy resin; 95 to 100 parts of flaky aluminum silver powder; 180-200 parts of a mixed solvent of dimethylbenzene and / n-butyl alcohol; 100 to 120 parts of dicyandiamide; 25 to 40 parts of 3-(3, 4-dichlorophenyl)-1, 1-dimethylurea; 10 to 12 parts of sodium molybdate; 4-8 parts of graphite; 1 to 2 parts of polydimethylsiloxane; 2 to 6 parts of a wetting agent HY-352; 3-5 parts of fumed silica; 0.5 to 3 parts of dimethyl silicone oil; and 0.2-2 parts of a hydroxymethyl cellulose agent. The coating disclosed by the invention has the advantages of thin coating, high-temperature rapid curing, relatively good corrosion resistance, good combination with a coating layer and the like, and also has excellent storage stability.

The invention relates to the field of materials, and discloses a low-temperature-resistant fluororubber heat-shrinkable sleeve and a preparation method thereof. The low-temperature-resistant fluororubber heat-shrinkable sleeve is prepared by taking fluororubber, an ethylene-ethyl acrylate copolymer, a nano magnesium hydroxide flame-retardant graft and an attapulgite graft as main raw materials and an antioxidant, a lubricant and the like as auxiliary materials through the processes of mixing, extrusion, irradiation, expansion and the like. Wherein the nano magnesium hydroxide flame-retardant graft is obtained by carrying out surface phosphorus-silicon modification on nano magnesium hydroxide by using triphenyl isocyanate thiophosphate and 2-amino-1-(butyldimethylsiloxy) butane, and has an efficient flame-retardant effect; the attapulgite graft is formed by grafting attapulgite to a polymer, agglomeration is prevented, the low-temperature resistance can be better exerted, and the finally prepared heat-shrinkable sleeve has low-temperature resistance and flame retardance.

The invention discloses an inorganic permeable crystallization additive for concrete and a use method, and belongs to the technical field of concrete building materials, the inorganic permeable crystallization additive for concrete comprises quartz sand, a composite silicon-based material, a sodium methyl silicate crystallization precipitator, calcium hydroxide, a water reducing agent, an expanding agent, tensile fibers, cement and a fly ash mixture; the composite silicon-based material is prepared by compounding nano silicon dioxide, a POSS (Polyhedral Oligomeric Silsesquioxane) compound and a titanate coupling agent; according to the invention, by adding the tensile fibers, the concrete is prevented from plastically shrinking to generate primary micro-cracks after pouring, the fibers form three-dimensional network support in the concrete to resist shrinkage stress, and the fibers can bridge the micro-cracks, inhibit the expansion of the micro-cracks and postpone the appearance of visible cracks, so that the toughness, bending strength, fatigue resistance and impact resistance of the concrete are remarkably improved; by effectively reducing and refining cracks, a main channel for water permeation is cut off, so that the impermeability of the concrete is indirectly improved.

LIQUID COSMETIC COMPOSITION COMPRISING SILICONE OILS AND HYDROCARBON-BASED OILS, AND THEIR PROCESSES This disclosure relates to a liquid cosmetic composition for skin and lip makeup, comprising a non-volatile, non-polar hydrocarbon-based oil, a volatile, non-polar hydrocarbon-based oil, a mixture of at least one volatile silicone oil and at least one non-volatile silicone oil, a trimethylsiloxysilicate, and a lipophilic gelling agent. Figure for abstract: none

The application belongs to the technical field of two-dimensional material preparation, and particularly relates to a preparation method of a transition metal sulfide two-dimensional material. The preparation method provided by the application comprises the following steps: taking a transition metal sulfide as a target material, taking a polysiloxane material as a substrate, and performing physical vapor deposition to obtain a polysiloxane material-transition metal sulfide composite material; the polysiloxane material-transition metal sulfide composite material comprises a polysiloxane material and a transition metal sulfide two-dimensional material film loaded on the surface of the polysiloxane material; the polysiloxane material comprises one or more of methyl silicone oil, ethyl silicone oil and phenyl silicone oil; carbon tetrachloride is used to dissolve the polysiloxane material in the polysiloxane material-transition metal sulfide composite material to obtain the transition metal sulfide two-dimensional material. The application uses a liquid polysiloxane material as a substrate to load the transition metal sulfide, breaks through the shortcoming of small size of the two-dimensional material in the prior art, and can freely control the thickness of the two-dimensional material.

The preparation method of the agar nanogel interface modification spray is prepared from the following raw materials by weight: agarose 35-70 parts, Tween 80 40-50 parts, dimethyl silicone oil 60-150 parts, and tetrahydrofuran 50-120 parts. The preparation method comprises the following steps: S1: placing agarose into heated deionized water to obtain an agarose aqueous solution, adding Tween 80 and dimethyl silicone oil to obtain a coarse emulsion; S2: ultrasonic dissolving the coarse emulsion to obtain a fine emulsion, cooling and centrifuging, taking the lower liquid, adding tetrahydrofuran to obtain an agar nanogel mixture; S3: rotary evaporation and drying the mixture to obtain agar nanogel; and S4: adding the gel into ethanol or water to obtain the agar nanogel interface modification spray. The agar nanogel spray formed based on the molecular self-assembly strategy has a hexagonal phase columnar structure, the spray can form a modified layer with excellent light-heat conversion efficiency and water transport performance on the water surface, and can significantly enhance the evaporation efficiency.

The invention discloses a method and a system for preparing a 4-AA medical intermediate through continuous flow ozone oxidation. The method comprises the following steps: continuously introducing a raw material solution containing (3R)-3-((R)-1-((tert-butyldimethylsilyl) oxy) ethyl)-1-(4-methoxyphenyl)-4-oxo azetidine-2-yl acetate and a gas containing ozone into a microreactor for reaction; after the reaction liquid is subjected to reduction quenching, the (3R, 4R) 4-acetoxyl-3-[R-(tert-butyldimethylsiloxy) ethyl]-2-azetidinone is obtained. On one hand, the reaction time is shortened from the hour level to the minute level, and the production efficiency is remarkably improved; and on the other hand, the reaction temperature is increased to 10-30 DEG C from deep cooling, so that the refrigeration energy consumption and the equipment requirement are greatly reduced. According to the invention, local peroxidation is fundamentally avoided, byproducts are obviously reduced, the product purity is improved, the method is suitable for continuous operation, the reaction process is controllable, and the method is safe and reliable.

This invention discloses a method for waterproofing corrugated cardboard without an adhesive layer based on corona activation pretreatment. This method completely eliminates the need for applying adhesive layers such as polyvinyl alcohol. First, the cardboard surface undergoes online corona activation treatment on the corrugated cardboard production line, achieving a surface dyn value of 46-48 dyn / cm. Then, a moisture-proofing agent is directly applied to the activated surface within 1-5 seconds, followed by drying at 40-60℃. The moisture-proofing agent comprises 15-20 parts methyl silicone oil, 10-20 parts oxidized polyethylene wax, 1-5 parts rosin, 1-3 parts stearic acid, 5-12 parts acrylic resin, 0.5-1.2 parts dehydroxanthan gum, 40-70 parts water, and optional nonionic surfactants. This invention replaces the chemical intermediary layer with physical activation, simplifying the process from three steps to two, reducing overall costs by more than 18%, and increasing the peel strength of the moisture-proof layer to more than 1.4 times that of traditional methods. Furthermore, the waterproofing performance does not decrease after 18 hours of high-temperature aging, significantly improving product durability.

The application discloses a composite nylon material preparation method, which is prepared by blending modified polytrifluoropropyl methyl siloxane containing hydrophobic trifluoropropyl side chains with nylon 6, realizing nanoscale dispersion in a melt extrusion process, adding an epoxy functionalized silane coupling agent and an organic tin catalyst, forming a three-dimensional crosslinked network under the hydrophobic effect of the trifluoropropyl side chains and the water blocking effect of the three-dimensional crosslinked network in the extrusion process, effectively blocking the diffusion channel of water molecules, improving the moisture resistance of the material, maintaining the tensile property of the raw material at 92-95%, and enhancing the wear resistance and thermal stability of the material by modified nanosilica; the equilibrium water absorption rate is only 0.7-0.9%, the low-temperature resistance is improved by more than 25%, and the low-temperature resistance is far superior to the embrittlement temperature of traditional PA6, so that the nylon material modification method has the advantages of maintaining mechanical properties, water resistance and low-temperature brittleness.

The invention discloses an organic silicon cooling liquid for immersed liquid cooling and a preparation method and application thereof.The organic silicon cooling liquid is prepared from raw materials including 1, 1, 3, 3-tetramethyldisiloxane, long-chain alpha olefin, a phenyl siloxane ring body, a methyl siloxane ring body and the like through hydrosilylation and ring-opening chain extension polymerization reaction under the action of a catalyst to precisely regulate and control a molecular structure, and the organic silicon cooling liquid is prepared. And the long-chain alkyl-terminated polysiloxane with phenyl on the side chain is prepared. The prepared polysiloxane product has the advantages of being low in viscosity, high in flash point, low in pour point, high in heat conductivity coefficient and the like when being used as cooling liquid, and compared with fluorine-containing series cooling liquid which is used at present, the cost is reduced by 80% or above, so that the polysiloxane product has wide prospects in immersed cooling application in the fields of data centers, charging piles, new energy batteries and the like.

The invention provides insulating heat-conducting silicone grease and a preparation method and application thereof.The preparation method comprises the steps that spherical aluminum oxide is modified through a silane coupling agent, and modified aluminum oxide is obtained; mixing the modified aluminum oxide and the hydroxylated hexagonal boron nitride nanosheet, adding deionized water and a pH value regulator, mechanically shearing, collecting supernate, and drying to obtain KA-coated BN powder; and stirring the KA-coated BN powder, simethicone, a catalyst and an auxiliary agent, reacting, grinding, and removing bubbles to obtain the insulating heat-conducting silicone grease. According to the preparation method, the insulating heat-conducting silicone grease which is extremely high in inertness and not easy to prepare on a large scale can be prepared on a large scale, and the insulating heat-conducting silicone grease has high heat conductivity, corrosion resistance and insulativity and can be applied to the field of electronics and electromagnetism.

The invention discloses a modified binder for a metal ceramic composite material and a preparation method thereof, the modified binder is prepared by taking sodium silicate and potash water glass as a basic system, adding sodium methyl silicate as an anti-moisture absorption agent and isooctyl alcohol polyoxyethylene ether (JFC-5) as a surfactant, optimizing the raw material ratio and the preparation process, and preparing the modified binder for the metal ceramic composite material. The technical problems of moisture absorption pulverization, poor high-temperature stability, many forming defects and the like of a traditional single water glass binder are solved. The modified binder disclosed by the invention has good bonding strength, moisture resistance, high-temperature stability and process flowability, and can effectively improve the structural integrity and compactness of a ceramic preform, so that the mechanical property, wear resistance and interface bonding quality of a metal ceramic composite material are guaranteed; the metal ceramic composite material is especially suitable for metal ceramic composite parts with extremely high requirements on wear resistance and impact resistance, such as roller sleeves of coal mills, and has a wide industrial application prospect.

The invention relates to a curing agent for high-flow-state solidified soil applied to underwater structure scour pit protection, the high-flow-state solidified soil and application of the high-flow-state solidified soil, and relates to the field of hydraulic engineering materials. The curing agent comprises a powder curing agent and a liquid curing agent, and the mass ratio of the powder curing agent to the liquid curing agent is (5-15): (0.1-0.6); the powder curing agent comprises sulphoaluminate cement, superfine slag powder, fly ash, gypsum powder, plant ash, silica powder, alkaline residues, hydroxypropyl methyl cellulose, polyvinyl alcohol, an exciting agent and a water reducing agent; the liquid curing agent comprises deionized water, sodium methyl silicate, potassium methyl silicate and polydimethylsiloxane. The raw materials of the high-flow-state solidified soil comprise slurry, fine sand and a curing agent. The application refers to the application in underwater structure scour pit protection. The construction method has the advantages in the aspects of underwater construction, scouring resistance, compact filling, bearing and the like, and the constructability, adaptability, durability and safety of the solidified soil in the aspect of underwater structure protection are improved.

The invention relates to the technical field of engineering construction materials, and particularly discloses a composite protective coating for engineering construction and a preparation method of the composite protective coating. The invention relates to a composite protective coating for engineering construction. The composite protective coating is prepared from the following raw materials in parts by weight: nano silica sol, potassium methyl silicate, cerium oxide nanoparticles, a polycarboxylate dispersant and an organic silicon defoaming agent, the preparation method comprises the following steps: S1, raw material pretreatment; S2, main raw material molecular-level composite reaction; S3, auxiliary raw material addition and system stabilization; and S4, construction and dual-curing molding. According to the technical scheme, nano silica sol and potassium methylsilicate are matched, and molecular-level Si-O-Si bonding is adopted to form a surface compact SiO2 layer and an internal organic hydrophobic elastic layer gradient cross-linked structure. The defects that an inorganic coating is prone to embrittlement, an organic coating is poor in weather resistance, or the performance of a physical mixing system cannot cooperate and cannot meet the requirements for hardness and flexibility at the same time are overcome.

The invention provides a long-acting bionic antimicrobial functional coating as well as a preparation method and application thereof, and relates to the technical field of marine coatings, the long-acting bionic antimicrobial functional coating comprises a component A and a component B, the component A is prepared from the following raw materials: silanol-terminated polydimethylsiloxane, methyl phenyl polysiloxane, a methylhydrosiloxane-dimethyl siloxane copolymer, an auxiliary agent and an organic solvent a; and the component B comprises the following raw materials: ethyl silicate and an organic solvent b. According to the long-acting bionic antimicrobial functional coating provided by the invention, marine organisms cannot be attached to the surface of a ship body or easily fall off, so that the antifouling effect is achieved, and the pollution path of antifouling paint to the marine environment is fundamentally cut off.

The application provides a method for preparing methyl silicone oil by using organic silicon high ring, which directly prepares the methyl silicone oil by using cheap organic silicon high ring, and reduces the production period and cost of the methyl silicone oil. In the application, semi-continuous feeding is adopted, the viscosity of the processed methyl silicone oil is controllable, the molecular weight distribution is narrow, the product conversion rate is greater than 85%, compared with the traditional process, the reaction process is stable, the utilization rate of the end-capping agent is high, and the amount is less.