15 results about "Methylethyl ketone" patented technology

The present application provides a kind of anticorrosive coating composition and corrosion protection coating and corrosion protection method for crude oil storage tank.The coating includes modified polyurethane coating consisting of first component and second component, and high solid content elastic protective weatherable topcoat consisting of third component and fourth component; the raw materials of first component are polyester dihydric alcohol, isocyanate, etc.; the raw materials of second component are chain extender, polyester dihydric alcohol, whisker and catalyst, etc.; the raw materials of third component are polyaspartic ester, methyl ethyl ketone, whisker and coupling agent, etc.; the raw materials of fourth component are curing agent and methyl ethyl ketone.The corrosion protection coating includes modified polyurethane coating and high solid content elastic protective weatherable topcoat coating.The construction period of the corrosion protection coating of the present application is short, environment-friendly, has excellent impact resistance, salt spray resistance, and long protection period, and is suitable for crude oil storage tank, especially tank top and safety accessories in coastal areas.

The application discloses a radiation refrigeration coating with a recyclable function and a preparation method thereof, and belongs to the technical field of refrigeration coatings.The coating is composed of base oil 500SN, hollow silica microspheres (SiO2@APTES) modified by a silane coupling agent, a liquid metal-based crosslinking agent (GLM) composed of a self-prepared urea-based monomer (UM), cetyl methacrylate (CMA) modified liquid gallium (Ga), talcum powder, calcium carbonate, ethylene glycol butyl ether, polyacrylate, methyl ethyl ketone oxime and methyl methacrylate.The GLM crosslinking agent in the coating has a reversible thermal stimulation response, can reversibly perform phase conversion under thermal stimulation, and simultaneously endows the coating with recyclable performance.Meanwhile, the introduction of the SiO2@APTES realizes high reflection of sunlight and high emission of a medium and far infrared band, and guarantees excellent radiation refrigeration performance of the coating.

The invention discloses dual photo-thermal curing 3D printing polyurethane acrylate photosensitive resin and a preparation method thereof, and belongs to the technical field of 3D printing manufacturing. The preparation method comprises the following steps: carrying out a reaction on dicyclomethane diisocyanate, 1, 5-pentanediol and a catalyst to prepare a polyurethane oligomer; then reacting with methyl ethyl ketoxime to prepare a polyurethane prepolymer sealed by isoacid radicals; finally, mixing and stirring with a cross-linking agent and zinc dimethacrylate to obtain a component A; methyl methacrylate, 1, 6-hexanediol dienoic acid ester and trimethylolpropane triacrylate are mixed and stirred, and a component B is prepared; the component A and the component B, the photoinitiator, the flatting agent and the polymerization inhibitor are mixed and stirred, and the coating is prepared. Through dual photo-thermal curing effects, an interpenetrating cross-linked network structure is formed, the toughness and impact resistance of a product are effectively improved while rapid curing is performed, the toughness and modulus are reduced, and the problem that low-modulus and high-elasticity products are difficult to prepare from existing DLP resin is solved.

The invention discloses a special protective coating for a polyethylene film, belongs to the technical field of polyethylene film coatings, and solves the problems of poor binding force and insufficient heat resistance of the existing coating and a PE film. The low-density polyethylene plastic is prepared from the following raw materials in parts by weight: 45-55 parts of low-density polyethylene plastic particles, 90-110 parts of xylene, 2.5-3.5 parts of benzoyl peroxide and 45-55 parts of functional monomer mixed liquor, wherein the functional monomer mixed liquor is prepared from 12-18 parts of butyl acrylate, 18-22 parts of styrene, 8-12 parts of hydroxyethyl acrylate and 4-6 parts of acrylic acid; the coating is diluted by methyl ethyl ketone or cyclohexanone until the solid content is 28-32%, and then the coating is used for coating a PE film. The compatibility is improved by taking PE as a matrix, the binding force and rigidity are synergistically enhanced by functional monomers, and the reaction stability is guaranteed by adding the initiator in batches. The coating is excellent in adhesive force after being coated, can obviously improve the thermal deformation temperature of the PE film, and is stable in performance under high temperature and high humidity.

The invention belongs to the technical field of tent fabrics, and relates to a preparation method of a moisture-permeable, heat-insulating and anti-ultraviolet tent fabric, which comprises the following steps: firstly, carrying out bottom layer gluing and drying on polyester filament tent base cloth, and then carrying out surface layer gluing and drying on the glued surface of the bottom layer to obtain the moisture-permeable, heat-insulating and anti-ultraviolet tent fabric. A coating agent I adopted for bottom layer gluing is obtained by uniformly mixing a polyurethane emulsion I, triethylene diamine, alumina powder and tributyl phosphate and then ultrasonically defoaming; a coating agent II adopted in surface layer gluing is obtained by uniformly mixing a polyurethane emulsion II, methyl ethyl ketone, N, N-dimethylformamide and rutile type nano titanium dioxide and then ultrasonically defoaming; a synthesis method of the polyurethane emulsion II comprises the following steps: firstly, adding vanillin into the polyurethane prepolymer, stirring for reaction, then adding sinapyl alcohol at the temperature of 60-75 DEG C, cooling after stirring for reaction, and adding deionized water to obtain the polyurethane emulsion II. The tent fabric prepared by the method disclosed by the invention is good in shading, moisture-permeable and heat-insulating properties.

The invention relates to the technical field of methyl ethyl ketone peroxide preparation, in particular to a micro-reaction synthesis process and system for methyl ethyl ketone peroxide. According to the specific technical scheme, the micro-reaction synthesis process of methyl ethyl ketone peroxide comprises the following steps: respectively preheating methyl ethyl ketone and nitric acid-hydrogen peroxide, mixing, adding octyl acetate, diluting, cooling, adding a magnesium sulfate or sodium chloride solution, mixing, and splitting phases. The invention solves the problems that in order to control the reaction heat and prevent decomposition explosion, the traditional kettle type reaction can only be slowly dropwise added, the heat and mass transfer is poor, the local temperature is difficult to control, the reaction time is long and the product composition is uncontrollable; the reactor is too large in liquid holdup, high in safety risk and incapable of continuously dividing phases.

The invention discloses an isocyanate low-temperature curing cross-linking agent as well as a preparation method and application thereof, and the low-temperature curing cross-linking agent is prepared from the following raw materials in parts by mass: 80-90 parts of diisocyanate, 55-65 parts of a dispersing agent, 8-20 parts of a drier, 30-50 parts of a sealing agent A, 30-60 parts of a sealing agent B and 40-60 parts of a sealing agent C, the sealing agent A is selected from at least one of methyl ethyl ketoxime and acetoxime; the sealing agent B is selected from polyether polyol; and the sealing agent C is selected from at least one of 4-hydroxyacetophenone and isopropyl salicylate. The low-temperature curing cross-linking agent is low in raw material cost, does not need to use high-cost raw materials such as a tin drier, is high in stability, can be cured at 130 DEG C, and has excellent corrosion resistance; and the prepared cathode electrophoretic paint has no special requirements on the used color paste, can use the general color paste, and can still keep excellent stability.

The present application belongs to the technical field of tent fabric, and relates to a preparation method of a moisture-permeable, heat-insulating and ultraviolet-resistant tent fabric. The moisture-permeable, heat-insulating and ultraviolet-resistant tent fabric is prepared by first performing bottom layer gluing on a polyester filament tent base cloth and drying, and then performing surface layer gluing on the surface of the bottom layer gluing and drying. The coating agent I used for the bottom layer gluing is obtained by uniformly mixing polyurethane emulsion I, triethylenediamine, aluminum oxide powder and tributyl phosphate, and then ultrasonic defoaming. The coating agent II used for the surface layer gluing is obtained by uniformly mixing polyurethane emulsion II, methyl ethyl ketone, N,N-dimethylformamide and rutile type nano titanium dioxide, and then ultrasonic defoaming. The synthesis method of the polyurethane emulsion II is as follows: first, vanillin is added to the polyurethane prepolymer, and then stirred and reacted; after that, mustard alcohol is added at a temperature of 60-75 DEG C, and then stirred and reacted; after that, the temperature is lowered, and deionized water is added, so as to obtain the polyurethane emulsion II. The tent fabric prepared by the method has good light-shielding, moisture-permeable and heat-insulating properties.

The application relates to the technical field of mixing, in particular to a multi-raw-material precise proportioning and mixing device suitable for DTBP micro-reaction, which comprises a plate-type reactor, a raw material supply unit, a proportioning and mixing unit and a linkage adjusting mechanism. The raw material supply unit comprises methyl ethyl ketone feeding pipes and hydrogen peroxide feeding pipes for respectively feeding methyl ethyl ketone and hydrogen peroxide, a DMP feeding pipe for feeding DMP and a sodium sulfate feeding pipe for feeding sodium sulfate. The proportioning and mixing unit comprises a first mixer, a second mixer, a third mixer and a mixing flow guide shell arranged in the three mixers. Two mixing pipes are arranged at the upstream of the mixing flow guide shell. The linkage adjusting mechanism comprises an adjusting assembly arranged at the upstream of the mixing flow guide shell, an electromagnet push rod for controlling the adjusting assembly and a flow channel switching assembly linked with the adjusting assembly. The flow channel switching assembly comprises a movable connecting seat which can be driven to move by the electromagnet push rod, and the movement of the movable connecting seat can synchronously change the guiding state of the fluid after passing through the adjusting assembly.

The embodiment of the invention discloses polyurethane reactive dye deepening printing paste as well as a preparation method and application thereof, and belongs to the technical field of textile pigment printing and reactive dye dyeing. The polyurethane reactive dye darkening printing paste is prepared from the following raw materials in parts by weight: 30 to 50 parts of polyoxypropylene ether trihydric alcohol, 40 to 60 parts of polycarbonate diol, 50 to 70 parts of polyester polyol, 40 to 70 parts of isophorone diisocyanate, 10 to 15 parts of N-methyldiethanolamine, 4 to 7 parts of methyl ethyl ketoxime, 0.05 to 0.1 part of dibutyltin dilaurate, 4.5 to 6.5 parts of glacial acetic acid and 500 to 800 parts of water. The polyurethane reactive dye deepening printing paste can improve the dyeing fastness of fabrics, has the characteristics of softness and smoothness, does not influence the original hand feeling of the fabrics, is suitable for printing and dyeing one-step reactive printing of fabrics such as pure cotton, rayon, tencel and the like, and has the advantages of simple process and low cost.

The invention relates to the technical field of mixing, in particular to a multi-raw-material accurate proportioning and mixing device suitable for DTBP micro-reaction, which comprises a plate-type reactor and further comprises a raw material supplying and conveying unit, and the raw material supplying and conveying unit comprises a methyl ethyl ketone inlet pipe and a hydrogen peroxide inlet pipe which are respectively used for conveying methyl ethyl ketone and hydrogen peroxide; the DMP inlet pipe is used for conveying DMP; the sodium sulfate inlet pipe is used for conveying sodium sulfate; the proportioning and mixing unit comprises a first mixer, a second mixer, a third mixer and a mixing flow guide shell arranged in the first mixer, the second mixer and the third mixer, and two mixing pipes are arranged at the upstream of the mixing flow guide shell; the linkage adjusting mechanism comprises an adjusting assembly arranged on the upstream of the mixed flow guide shell, an electromagnet push rod used for controlling the adjusting assembly, and a flow channel switching assembly linked with the adjusting assembly; the flow channel switching assembly comprises a movable connecting base which can be driven by the electromagnet push rod to move, and the guide state of fluid passing through the adjusting assembly can be synchronously changed through movement of the movable connecting base.

The invention relates to a radiation refrigeration coating with a recoverable function and a preparation method thereof, and belongs to the technical field of refrigeration coatings. The coating is prepared by mixing base oil 500SN, hollow silicon dioxide microspheres (SiO2 (at) APTES) modified by a silane coupling agent, a self-made ureido monomer (UM), a liquid metal-based cross-linking agent (GLM) composed of cetyl methacrylate (CMA) modified liquid gallium (Ga), talcum powder, calcium carbonate, ethylene glycol butyl ether, polyacrylate, methyl ethyl ketoxime, methyl methacrylate and the like. The GLM cross-linking agent in the coating has reversible thermal stimulation response, reversibly performs phase conversion under thermal stimulation, and simultaneously endows the coating with recoverability. Meanwhile, due to the introduction of SiO2 (at) APTES, high reflection of sunlight and high emission of middle and far infrared bands are realized, and excellent radiation refrigeration performance of the coating is guaranteed.

This utility model discloses a heat transfer oil heating system for a methyl ethyl ketone (MEK) dehydrogenation reactor, relating to the field of heat transfer oil heating technology. The technical solution includes a fuel gas buffer tank connected to a natural gas inlet pipeline, a butane inlet pipeline, a MEK unit tail gas pipeline, and an outlet pipeline. The outlet pipeline is connected to a heat transfer medium furnace, which is connected to a heat transfer oil feed pipeline, a heat transfer oil discharge pipeline, and a first flue gas outlet pipeline. The first flue gas outlet pipeline is connected to an air preheater, which is connected to an air inlet pipeline, a second flue gas outlet pipeline, and an air outlet pipeline. An induced draft fan is installed on the air inlet pipeline. This utility model uses butane gas and MEK unit tail gas as fuel gas to partially replace natural gas, which not only increases the safety and stability of the unit but also achieves the requirements of low carbon emissions and economy.

This invention relates to the field of methyl ethyl ketone peroxide (MEKP) production technology, specifically to a method for preparing MEKP and its applications. The method includes the following steps: adding [BMIM]PF6 ionic liquid to a reaction vessel, followed by a composite catalyst, triethyl borate, and MEKP; cooling and then adding H2O2 dropwise, heating to 20-30°C, and adding a MnHCF dispersion; cooling the reaction solution to crystallize, and filtering to obtain preliminary MEKP crystals; recovering the ionic liquid by vacuum distillation of the filtrate; dehydrating the solution using a vacuum membrane; adding polyurethane acrylate and DPGDA, then coating the solution with a gelatin-gum arabic wall material, and spray drying to obtain MEKP. This invention effectively solves the core pain points in MEKP production and applications through triple innovation: MnHCF bimetallic catalysis, borate ester stabilization, and microcapsule safety design. It demonstrates significant advantages in catalytic efficiency, storage stability, safety performance, and practical applications.

The application discloses a kind of nano porcelain coating for galvanized guardrail steel plate coating renovation and a preparation method thereof, and belongs to the technical field of coating.The nano porcelain coating for galvanized guardrail steel plate coating renovation of the application comprises, by mass fraction, 20-30 mass parts of epoxy resin base material, 4-6 mass parts of epoxy diluent, 30-45 mass parts of titanium-containing filler, 0.5-1 mass part of dispersant, 0.5-1 mass part of defoaming agent, 0.5-1 mass part of accelerator, 5-10 mass parts of solvent, 8-10 mass parts of amine curing agent and 1-3 mass parts of carbon disulfide.The titanium-containing filler is obtained by in-situ hydrolysis of titanium tetrachloride on the surface of hexagonal boron nitride.The amine curing agent comprises 4,5-dimethyl-1,2-phenylenediamine, phosphoramide curing agent, modified polyamide and modified aliphatic amine.The accelerator comprises any one or several of bis(triphenylphosphine)ammonium chloride, phenol, salicylic acid and tris(dimethylaminomethyl)phenol.The solvent is any one or several of methyl ethyl ketone, dimethylbenzene, butanol, methyl isobutyl ketone and toluene.