3results about How to "Achieve anchoring" patented technology

This invention discloses a method for preparing functional carbon materials with atomically dispersed Lewis acid-base sites, comprising: (1) polymer preparation to obtain a polymer sample; (2) polymer modification to obtain a modified polymer sample; (3) polymer carbonization: the modified polymer sample is heat-treated in a non-oxidizing atmosphere to carbonize the modified polymer sample; after carbonization, the system is naturally cooled; then, after washing and drying, the target functional carbon material is obtained. This invention utilizes atomically dispersed Lewis acidic metal sites and basic N sites to modify carbon materials in situ. The prepared functional carbon material has a large specific surface area, well-developed pore structure, abundant acid-base sites, and an atomically distributed structure, which can significantly improve the density of functional sites on the surface of the carbon material and its adsorption efficiency for boron, phosphorus, and metal impurities. Its application in the purification of chlorosilanes can greatly reduce the load of subsequent distillation and impurity removal, and improve the yield and quality of high-purity chlorosilanes.

The utility model discloses a high-performance well completion hanger, which relates to the technical field of well completion hangers and comprises an alloy pipe body, a plurality of sealing rubber rings are sleeved on the alloy pipe body, a sleeve is mounted at the lower end of the alloy pipe body, and a well cementation accessory is sleeved at the lower end of the sleeve. The anchoring and sealing effects are achieved after the pipe body is expanded and extruded, the problems that anchoring is not stable and the sealing effect is poor are solved, and the anchoring reliability and sealing performance of the hanger are improved. The T-shaped fixing block is matched with the central pipe and the tail pipe rubber plug, so that the tail pipe rubber plug and the central pipe are connected and are disconnected and separated after being pressed, the problem that the tail pipe rubber plug and the central pipe are difficult to separate is solved, and the convenience of component separation in the construction process is improved.

The application discloses a PVDF / PI-based ultrathin composite electrolyte membrane and a preparation method and application thereof, and belongs to the field of lithium ion solid-state electrolytes.The PVDF / PI porous membrane is prepared by a non-solvent phase inversion method, a large number of regular holes are formed on the surface of the membrane by combining a hot stamping technology after the membrane is immersed in lithium salt, and a PVDF / inorganic solid-state electrolyte formula slurry is coated, so that the composite electrolyte membrane is obtained.The PVDF / PI composite polymer electrolyte membrane prepared by the application not only greatly improves the mechanical strength of the solid-state electrolyte membrane, but also further destroys the crystallization of PVDF, and improves the ionic conductivity of the solid-state electrolyte.The thickness of the electrolyte membrane is controllable and ultrathin, the preparation process is simple, the cost is relatively low, and the electrolyte membrane has a good application prospect in a full solid-state lithium ion battery.