10 results about "Lauroyl peroxide" patented technology

The invention relates to the technical field of electric wire materials, in particular to a preparation process of a high-strength halogen-free flame-retardant electric wire. According to the preparation method, the polyolefin flame-retardant microspheres are obtained by adding propenylated cyclotriphosphazene, propenylated phosphaphenanthrene, methyl methacrylate, lauroyl peroxide, polyvinyl alcohol and deionized water. The flame-retardant modified boron nitride nanosheet is prepared by the following steps: firstly, preparing a flame-retardant modified boron nitride nanosheet, and then adding hydroxylated boron nitride, gamma-glycidyl ether oxypropyl trimethoxy silane and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, so as to obtain the flame-retardant modified boron nitride nanosheet. An ethylene-vinyl acetate copolymer, polyolefin flame-retardant microspheres, flame-retardant modified boron nitride nanosheets, an antioxidant and a lubricant are mixed and react, and the high-strength halogen-free flame-retardant protective sleeve is obtained. And wrapping the periphery of the copper core wire with the high-strength halogen-free flame-retardant protective sleeve to obtain a finished product. The finished product prepared by the invention has excellent flame retardant property and high strength, thereby having a wide application prospect in the technical field of electric wire materials.

The invention discloses an ethylene-vinyl acetate copolymer, an ethylene-vinyl alcohol copolymer and a preparation method thereof, and belongs to the field of polymers. Comprising the following steps: putting a mixture containing an initiator, a chain transfer agent, a solvent and vinyl acetate into a closed container, introducing ethylene gas, and carrying out pressurized polymerization to obtain the ethylene-vinyl acetate copolymer, the initiator is selected from at least one of lauroyl peroxide, benzoyl peroxide, azodiisobutyronitrile and azobisisoheptonitrile; the chain transfer agent is selected from the group consisting of 2-dimethylaminoethyl acetate and / or 2-dimethylaminoethyl propionate. The preparation method of the low-branching-degree EVA has the characteristics of mild conditions, strong controllability, simplicity in operation and large-scale application prospect. The invention also provides an ethylene-vinyl alcohol copolymer prepared from the prepared EVA through alcoholysis reaction, and the ethylene-vinyl alcohol copolymer has the characteristics of high molecular weight, narrow distribution, good appearance and the like, and meets the application requirements of commercial EVOH.

The invention belongs to the technical field of oil exploitation, and discloses a plugging agent for rebuilding a shaft of a low-efficiency horizontal well and a preparation method of the plugging agent, the plugging agent is prepared from the following raw materials in parts by weight: 100 parts of water, 26-31 parts of a composite monomer, 0.35-0.55 part of a functional monomer, 0.012-0.016 part of an initiator, 0.9-1.3 parts of a cross-linking agent and 0.055-0.075 part of a stabilizer; the composite monomer is a mixture of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid, and the composite monomer is a mixture of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid; the functional monomer is a mixture of 1-vinyl imidazole and N-vinyl caprolactam; the initiator is prepared by mixing sodium azodiisobutyramide propanesulfonate and lauroyl peroxide. According to the invention, the azodiisobutyramide sodium propanesulfonate and the lauroyl peroxide are compounded and synergistically realize uniform monomer polymerization and dense gel.

The invention discloses wastewater treatment equipment for production of lauroyl peroxide, and relates to the technical field of production of lauroyl peroxide, and the technical scheme is that the wastewater treatment equipment comprises a bottom plate, and a treatment box is fixedly embedded in the bottom plate; the supporting rod is fixedly connected into the treatment box, a connecting plate is fixedly connected to the rear side of the treatment box, a shell is fixedly connected to the inner wall of the top of the treatment box, an opening is formed in the top of the shell, and a connecting block is fixedly embedded in the rear side of the treatment box; the liquid adding pipe is fixedly embedded in the top of the treatment box, a first switch valve is arranged on the liquid adding pipe, a liquid outlet pipe is fixedly embedded in the bottom of the treatment box, and a second switch valve is arranged on the liquid outlet pipe. The stirring and mixing effect on the wastewater and the treatment agent can be improved by stirring through a rotating shaft I, a stirring rod and a spiral strip, so that the treatment agent and the wastewater are fully mixed.

The invention relates to application of a polycyclic quinazolinone compound in resisting plant pathogenic fungi in the technical field of organic synthetic chemistry and agricultural pharmacology, the structural formula of the derivative is shown as I or II, in the structural formula, R is H, 4-OMe, 4-Me, 4-CO2Me, 4-F, 4-CF3, 4-Cl, 4-Br, 2-Br or 2-F, and R is H, 4-OMe, 4-Me, 4-CO2Me, 4-F, 4-CF3, 4-Cl, 4-Br, 2-Br or 2-F; the series of compounds have a certain inhibition effect on plant pathogenic fungi including strawberry botrytis cinerea, fusarium graminearum, rhizoctonia solani and magnaporthe oryzae, and can be applied to plant protection as a bactericide. The preparation method comprises the following steps: by taking N-cyanamide olefin as a raw material and lauroyl peroxide as an oxidizing agent, reacting in a dichloromethane or trichloromethane solvent at 80-120 DEG C to obtain the polycyclic quinazolinone compound with antibacterial activity. The preparation method is simple to operate, green and efficient.

The invention discloses a method for organic catalytic synthesis of beta-alkyl-nitrile compounds, and relates to the field of synthesis of beta-alkyl-nitrile compounds, and the method comprises the following steps: taking 5 mol percent of thiophene-2-formic acid cuprous as a catalyst, 6 mol percent of 4, 4 ', 6, 6'-tetramethyl-2, 2 '-dipyridyl as a ligand, 1, 2, 3, 3, 3-tetramethyl-1, 3, 3, 3-tetramethyl-1, 3, 3-tetramethyl-1, 3, 3-tetramethyl-1, 3, 3-tetramethyl-1, 3, 3-tetramethyl-1, 3, 3-tetramethyl-1, 3-tetramethyl-1, the method comprises the following steps: by taking 1, 2-dichloroethane as a reaction solvent, lauroyl peroxide with equivalent weight of 1.5 as an oxidizing agent and an alkyl source and trimethylsilyl cyanide with equivalent weight of 1.5 as a cyano source, reacting at room temperature for six hours; according to the method for preparing the beta-alkyl nitrile compound, the target product can be finally obtained at the separation yield of 80%.

This invention belongs to the field of peroxide production technology, specifically relating to a continuous production apparatus and method for lauroyl peroxide. The continuous production apparatus for lauroyl peroxide includes a primary reactor, to which a secondary reactor, a tertiary reactor, and a filter tank are sequentially connected. Each of the primary, secondary, and tertiary reactors is equipped with a stirrer, with a spiral plate threaded onto its upper part. A motor is connected to the top of the stirrer. A conveyor belt is installed inside the filter tank, and a mother liquor outlet is located in the center of the bottom plate. The bottom plates on both sides of the mother liquor outlet are inclined. A primary washing tank, a secondary washing tank, and a tertiary washing tank are sequentially connected to the filter tank. Each of the primary, secondary, and tertiary washing tanks is equipped with a filter screen and a sprayer. This invention employs a multi-reactor series continuous production process, resulting in higher production efficiency and more stable operation.

The present invention provides a preparation method and application of a filler for high-performance thermoplastic composite materials. The preparation method of the filler for high-performance thermoplastic composite materials comprises the following steps: S1: weighing a certain amount of copper nitrate, potassium carbonate, and deionized water, adding them to a reaction vessel, stirring and reacting at 70-90°C for 6-8 hours to obtain a mixed solution A; S2: filtering, washing, and drying the mixed solution A at 30-50°C for 4-8 hours to obtain basic copper carbonate; S3: weighing a certain amount of basic copper carbonate, ethylene glycol dimethacrylate, an initiator lauroyl peroxide, a solvent acetone, and a catalyst triethylenediamine, placing them into a reaction vessel, and reacting under UV light for 18-24 hours to obtain a solution B; S4: filtering, washing, and drying the solution B at 40-60°C for 10-12 hours to obtain basic copper carbonate grafted with ethylene glycol dimethacrylate, i.e., modified basic copper carbonate. The preparation method and application of the filler for high-performance thermoplastic composite materials provided by the present invention have the advantages of being able to synthesize new modified basic copper carbonate, and using it to modify thermoplastic plastics to obtain relatively excellent mechanical properties.

The invention belongs to the technical field of peroxide production, and particularly relates to a lauroyl peroxide continuous production device and a preparation method.The lauroyl peroxide continuous production device comprises a first-stage reaction kettle, and the first-stage reaction kettle is sequentially connected with a second-stage reaction kettle, a third-stage reaction kettle and a filter tank; the first-stage reaction kettle, the second-stage reaction kettle and the third-stage reaction kettle are internally provided with stirrers, the upper parts of the stirrers are in threaded connection with spiral plates, the tops of the stirrers are connected with motors, the filter tank is internally provided with a conveying belt, the middle part of a bottom plate of the filter tank is provided with a mother liquor outlet, and the bottom plates on the left and right sides of the mother liquor outlet are obliquely arranged; the filter tank is sequentially connected with a first-stage washing tank, a second-stage washing tank and a third-stage washing tank, and filter screens and sprayers are arranged in the first-stage washing tank, the second-stage washing tank and the third-stage washing tank. The continuous production process with multiple kettles connected in series is adopted, the production efficiency is higher, the operation is more stable, and the multiple kettles are connected in series for operation.

Provided is a method for producing an ethylene-vinyl ester copolymer, in which coloration due to thermal degradation can be suppressed in a saponified ethylene-vinyl ester copolymer. The method for producing an ethylene-vinyl ester copolymer by copolymerizing a vinyl ester monomer and ethylene, wherein the polymerization activity of the vinyl ester monomer, as measured using the measurement method described below, is 550 seconds or more.　Measurement method: a glass test tube containing 10 mL of a vinyl ester monomer and 0.130 g of lauroyl peroxide as a polymerization catalyst is immersed in a constant temperature bath at 20°C, the polymerization catalyst is dissolved in the vinyl ester monomer, the number of seconds between a point when the test tube is immersed in a constant temperature bath at 65.0ºC and a point when foam is generated and the height from the surface of a foam layer to the bottom of the foam layer is 3 mm or more is measured, and this number of seconds is taken to be the polymerization activity.