5results about How to "Avoid pyrolysis" patented technology

This invention discloses a low-corrosion chloride molten salt heat transfer and storage medium, method, and application, belonging to the field of molten salt thermal storage technology. The high-heat-capacity, low-corrosion carbonate molten salt heat transfer and storage medium of this invention is composed of 18%~22% potassium chloride, 6%~10% sodium chloride, 1%~3% aluminum powder, 1%~3% magnesium powder, 1%~3% zinc powder, with the remainder being zinc chloride. Its key feature is the introduction of metal powder into the molten salt, which not only achieves excellent thermal storage performance at 600℃~800℃, but also reduces corrosion by utilizing the potential regulation ability of dissolved metal ions and the formation of highly active [Al] from gaseous chloride products through physical and chemical adsorption. This low-corrosion chloride molten salt heat transfer and storage medium achieves excellent thermal storage performance and low corrosivity, and can be applied in solar thermal power generation and molten salt energy storage.

The utility model provides an emulsifier adding device for emulsion explosive production, and belongs to the technical field of emulsion explosives. Comprising a base, an adding barrel is fixed to the base, a feeding pipe and a discharging pipe are installed at one end of the adding barrel, an air cylinder is fixed to the other end of the adding barrel, and a crankshaft of the air cylinder extends into the adding barrel and is connected with a piston; the feeding pipe and the discharging pipe extend into the base, the outer side of a port, extending into the base, of the feeding pipe is movably connected with a first membrane flap, the first membrane flap only allows a medium to be output from the port of the feeding pipe, the inner side of a port, extending into the base, of the discharging pipe is movably connected with a second membrane flap, and the second membrane flap only allows the medium to be output from the port of the discharging pipe. And the second membrane flap only allows the medium to be input into the port of the discharge pipe. According to the utility model, the emulsifier can be quantitatively added, the molecular chain of the emulsifier can be prevented from being damaged, the activity of the emulsifier is ensured, and the quality of the final emulsion matrix is further ensured.

The invention discloses a heat insulation polytetrafluoroethylene composition for a missile electronic cabin cover, which adopts modified porous SiO2 as a functional filler, constructs a reversible solid-liquid phase change heat absorption system in a polytetrafluoroethylene matrix, and actively intercepts and stores intrusion heat through phase change latent heat, thereby significantly delaying the temperature rise of the back of the cabin cover; meanwhile, perfluoropolyether phosphate is introduced, so that the interface bonding between the filler and a matrix is greatly improved. The two components cooperate with each other, so that the composite material keeps the inherent low dielectric property and high mechanical strength of polytetrafluoroethylene while obtaining excellent dynamic heat insulation performance, and unification of wave transmission, heat insulation and bearing functions is realized. In addition, the process is completely compatible with an existing polytetrafluoroethylene mold pressing-sintering production line, equipment investment and energy consumption are reduced, and an efficient and low-cost technical path is provided for industrial preparation of the high-performance missile electronic cabin cover.

The utility model discloses a kind of equipment for ruthenium trichloride drying, belong to ruthenium trichloride processing equipment technical field. Including sandwich kettle body, temperature control heater, nitrogen purging unit, cryogenic trapping unit and discharge unit, the kettle cover is provided at the top of the sandwich kettle body, and the inside of the sandwich kettle body is rotationally provided with dispersion paddle;The dispersion paddle is connected with the stirring motor of kettle cover top;The bottom of the sandwich kettle body is provided with gate valve;Temperature control heater is set in the sandwich inside of sandwich kettle body;Nitrogen purging pipeline is installed on the inside upper portion of the inner bag of the sandwich kettle body;The nitrogen purging pipeline is connected to nitrogen pressure gas source;The cryogenic trapping unit includes the exhaust pipe connected with the inside upper portion of the inner bag of sandwich kettle body, and the exhaust pipe is connected to exhaust pump;The equipment for ruthenium trichloride drying of the utility model can ensure the drying quality of ruthenium trichloride, and can avoid material loss and cause surrounding environmental pollution.

The invention relates to the technical field of electrical contact materials, in particular to a SnO2 electrical contact material for a new energy electrical appliance and a preparation method of the SnO2 electrical contact material. The SnO2 electrical contact material comprises 8-15% of tin oxide, 0.5-3% of a composite additive, 0.1-2% of an accelerant and the balance of silver. According to the invention, yttrium ions and chromium ions can be partially dissolved in tin oxide crystal lattices, so that the thermal decomposition reaction of tin oxide at extremely high arc temperature is effectively inhibited, the material loss caused by tin element volatilization is reduced, the second additive generates a high-melting-point composite oxide phase after high-temperature calcination, and the high-melting-point composite oxide phase is uniformly distributed in a silver matrix; as a physical skeleton for resisting arc erosion, the accelerant mainly plays a role in dispersing and interface optimizing, and an interface compound containing zinc, lanthanum, boron and oxygen is formed after the accelerant is calcined, so that the wettability and binding force between tin oxide particles and a silver matrix are improved, uniform distribution of the tin oxide particles is ensured, local overheating and concentrated erosion are avoided, and the service life of the tin oxide particles is prolonged. Therefore, the mass loss of arc ablation is obviously reduced.