4results about How to "Single type" patented technology

The method comprises the following steps: adding 1-[3-chloro-5-(trifluoromethyl) phenyl]-2, 2, 2-trifluoroethanone and 4-acetyl naphthoic acid into a solvent, adding alkali, completely reacting at 50-80 DEG C, then adding DMAP, dropwise adding acetic anhydride, completely reacting, then adding tetrabutylammonium bromide, and reacting at 50-80 DEG C for 2-3 hours to obtain the arfamarana. Adding an aqueous solution of sodium hydroxide and hydroxylamine hydrochloride, and reacting at 0-5 DEG C to obtain an intermediate; reacting the intermediate with acyl chloride under the action of DMF (Dimethyl Formamide) and dichloromethane to obtain 4-(5-(3-chloro-5-(trifluoromethyl) phenyl)-5-(trifluoromethyl)-4, 5-dihydroisoxazole-3-yl)-1-naphthoyl chloride; the preparation method comprises the following steps of: adding a catalyst into an organic solvent, dropwise adding into a dichloromethane solution of 2-amino-N-(2, 2, 2-trifluoroethyl) acetamide hydrochloride and alkali, and reacting at the temperature of between 0 and 5 DEG C, so as to obtain the arfola sodium. The method is short in route, high in yield and suitable for large-scale industrial production.

This invention discloses a spatial pose measurement method for the hoisting and docking of large components, belonging to the field of spatial pose measurement technology. The method includes establishing a first coordinate system based on the space of the hoisting and docking site, a second coordinate system based on the position of the measurement assembly system, a third coordinate system based on the sensor position, and a fourth coordinate system based on the support rod position. The method obtains the transformation relationships between the first, second, third, and fourth coordinate systems, acquires the coordinates of the support rod relative to the measurement assembly system in the second coordinate system, and obtains the pitch angle of the measurement assembly system relative to the support rod. The acquired data is then transformed in each coordinate system to obtain the spatial position of the large component relative to the support rod. This invention combines real-time measurement of the position and attitude of the measuring fixture with the inner envelope structure characteristics of the hoisting equipment (large components typically use gantry cranes) to achieve collision risk assessment throughout the entire hoisting process, effectively controlling the risk of collision damage during hoisting.

An embodiment of the present invention provides a method and system for boosting pressure during a test run of an oxygen box power system, comprising: a pre-launch boosting pipeline, an oxygen box charging pipeline, and an oxygen self-generated boosting pipeline; the pre-launch boosting pipeline is connected in parallel with the oxygen box charging pipeline; the pre-launch boosting pipeline, the oxygen box charging pipeline, and the oxygen self-generated boosting pipeline are all connected to the oxygen box through an oxygen box boosting adapter; a helium flowmeter, a first boosting solenoid valve, a pre-launch boosting solenoid valve, and a one-way valve are sequentially arranged on the pre-launch boosting pipeline; a helium flowmeter, a second boosting solenoid valve, and an oxygen box charging switch are sequentially arranged on the oxygen box charging pipeline; one end of the oxygen self-generated boosting pipeline is connected to the engine, and the other end of the oxygen self-generated boosting pipeline is connected to the oxygen box; a tee is arranged on the pre-launch boosting pipeline, and the three ports of the tee are respectively connected to the helium flowmeter, the helium flowmeter, and a ground helium source.

The present invention provides a thermal control coating and its application, belonging to the technical field of coatings. The thermal control coating of the present invention comprises the following components in mass percentage: 15-30% resin, 0.5-3% dispersant, 0.5-3% defoamer, 0.5-3% directional arrangement auxiliary agent, 10-40% lamellar wide bandgap filler, 10-40% granular wide bandgap filler and the remainder of solvent; the lamellar wide bandgap filler comprises a lamellar wide bandgap material and a coating layer wrapping the lamellar wide bandgap material. The present invention coats a high refractive index coating layer on the surface of the lamellar wide bandgap material, utilizes the lamellar wide bandgap filler and the granular wide bandgap filler as a reflective medium, combines the particle size of the granular wide bandgap filler, the thickness, diameter and diameter / thickness of the lamellar wide bandgap material, and can produce a thermal control coating with high solar reflectivity under the conditions of low pigment-to-base ratio and thin coating.