3 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 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%.

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.