6 results about "Hydrazine monohydrate" patented technology

The invention discloses a coking inhibition additive for heat absorption type hydrocarbon fuel. The coking inhibition additive comprises hydrazine monohydrate, distilled water and stearic acid terminated hyperbranched polyethyleneimine CHPEI. The invention also provides a preparation method of the heat absorption type hydrocarbon fuel coking inhibition additive, which comprises the following steps: weighing hydrazine monohydrate, adding distilled water, and stirring until the hydrazine monohydrate and the distilled water are uniformly mixed; adding CHPEI particles, and stirring until the CHPEI particles are completely dispersed; the mixture is put into a high-speed homogenizer to be stirred, and it is ensured that the mixture is in a uniform sticky paste shape; the invention also provides an application of the heat absorption type hydrocarbon fuel coking inhibition additive. According to the coking inhibition additive and the application thereof provided by the invention, high-temperature coking of aerospace engine fuel can be effectively inhibited; and a pseudo-homogeneous system which is low in freezing point, good in overload resistance stability and uniform in appearance can be formed with hydrocarbon fuel.

The invention relates to the technical field of inorganic nano composite materials, and discloses a PPy thin layer wrapped sulfur vacancy-containing Mn0. 2Cd0. 8S nano particle composite material, a preparation method and application, firstly, Mn0. 2Cd0. 8S nano particles are prepared through a solvothermal method, hydrazine monohydrate is added as a reducing agent to introduce sulfur vacancy, then the sulfur vacancy-containing Mn0. 2Cd0. 8S nano particles are put into water to be subjected to ultrasonic dispersion, and the PPy thin layer wrapped sulfur vacancy-containing Mn0. 2Cd0. 8S nano particle composite material is obtained. And sequentially adding CTAB (Cetyltrimethyl Ammonium Bromide), pyrrole and an ammonium persulfate solution into the dispersion liquid to obtain the Mn0. 2Cd0. 8S nano-particle composite material coated with a PPy thin layer and containing sulfur vacancies, and applying the Mn0. 2Cd0. 8S nano-particle composite material to photocatalytic degradation of ciprofloxacin and production of H2O2. Sulfur vacancies are introduced into Mn0. 2Cd0. 8S, the surface of Mn0. 2Cd0. 8S is wrapped with PPy, a tight contact interface is formed, the light absorption performance is improved through the synergistic effect between Mn0. 2Cd0. 8S and PPy, and therefore the photocatalytic activity of the composite structure is greatly improved.

The invention relates to the technical field of batteries, and discloses a composite electrode material and a preparation method thereof, the composite electrode material comprises the following raw materials by weight: 30-40 parts of acetylene black, 36-40 parts of sodium tungstate dihydrate, 40-50 parts of thiourea, 2-3 parts of a cationic detergent, 105-120 parts of concentrated sulfuric acid, 30-40 parts of concentrated nitric acid, 8-10 parts of diluted hydrochloric acid, 45-50 parts of hydrazine monohydrate, 4-5 parts of a pore forming agent, and 80-100 parts of deionized water. Tungsten disulfide is loaded on acetylene black, the advantages of tungsten disulfide and acetylene black are fully played, the conductivity of the composite material is effectively enhanced, the agglomeration degree of WS2 is weakened, meanwhile, 4A zeolite serves as a pore-forming agent, gaps are provided for electron transfer, and the hydrogen evolution performance of the composite electrode material is jointly improved through the synergistic effect of the two aspects; the prepared composite electrode material has relatively small hydrogen evolution overpotential, relatively high catalytic activity and relatively high stability.

The application provides a synthesis method of 1,2,4-triazole, which comprises the following steps: firstly, reacting part of formamide with hydrazine monohydrate hydrochloride to prepare monoacylhydrazine; and then, adding the monoacylhydrazine into another part of formamide by reverse titration to perform a dehydration reaction. The raw material formamide is added in a step-by-step manner, so that the conversion rate of the formamide is improved, and the yield of 1,2,4-triazole is improved. The generated monoacylhydrazine is added into the formamide by reverse titration, so that the process is optimized, and the yield of 1,2,4-triazole is further improved. By using the method, the yield of the final product 1,2,4-triazole can reach 95.4%, and the content is greater than 98%.

A system for the synthesis of N-(3-(Methylthio)propyl) thiosemicarbazide-derived imine derivatives, comprising: a first reaction vessel configured to combine hydrazine monohydrate and ethanol; a second reaction vessel configured to prepare a solution of 3-(methylthio)propylisothiocyanate in an ethanol-water mixture; a backflow device configured to: combine thiosemicarbazide with substituted aldehydes or ketones in methanol; maintain a reaction temperature of 75°C; and to maintain the reaction for a specified period of time; a temperature control unit configured to maintain the temperature range during synthesis; a filter unit configured to filter the mixture to obtain derivatives; and a synthesis control module configured to monitor and control reaction conditions.

The present invention relates to the technical field of polyurethane materials, and specifically to an aging-resistant polyurethane glass interlayer film for laminated glass and a processing technology thereof. Specifically, the process comprises the following steps: Step 1: reacting an olefinic halogen-containing compound with terminal hydrogen silicone oil, potassium phthalimide, hydrazine monohydrate, and dimethyl carbonate in sequence, followed by catalytic pyrolysis to obtain a curing agent; Step 2: modifying carbon black with a silane coupling agent, and then allowing titanium dioxide to grow in situ on the carbon black surface to obtain a carbon black / titanium dioxide composite material; finally, modifying the carbon black / titanium dioxide composite material with a silane coupling agent to obtain a modified filler; Step 3: weighing each raw material according to the formula, mixing them evenly in an internal mixer to obtain a mixed material, and finally, subjecting the mixed material to injection molding, curing, and aging to obtain an aging-resistant polyurethane glass interlayer film. The polyurethane glass interlayer film not only has improved aging resistance but also has enhanced mechanical properties, thus having better practicality.