3results about How to "Guaranteed Affinity" patented technology

This invention belongs to the field of thermoplastic composite material joining technology, and specifically relates to a method for preparing a silane-modified thermoplastic composite resistance welding heating element. The invention first performs a cleaning pretreatment on a carbon nanotube film to remove surface contaminants. Then, plasma treatment technology is used to etch and activate the film surface, introducing oxygen-containing groups to provide active sites for silane grafting. Finally, silane is grafted onto the plasma-activated film using a silane coupling agent, utilizing its bifunctional properties to construct a molecular bridge between the carbon nanotubes and the resin, thereby improving the interfacial bonding force between the film heating element and the resin, and increasing the resistance welding strength. The heating element prepared by this invention has high specific strength, corrosion resistance, and better homogeneity with the base material, making it more suitable for complex welding joint service environments.

This invention discloses a high-strength, heat-resistant lithium-ion battery separator and its preparation method, belonging to the field of lithium-ion battery technology. The separator is a multilayer composite structure, comprising: a rigid porous framework membrane prepared from a rigid polymer material via thermally induced phase separation as a support layer; and a functional layer composited on the surface of the support layer. The functional layer is a gel electrolyte separator formed from a covalent organic framework material via electrospinning, containing a hierarchical porous network of micropores, mesopores, and macropores, and a flame retardant dispersed in the pores of the separator. The preparation method includes: thermally induced phase separation after melt blending, biaxial stretching and extraction, electrospinning surface deposition, flame retardant introduction, and hot pressing. The separator of this invention, through the synergistic effect of the rigid framework and the COFs gel layer, possesses high mechanical strength, high heat resistance, high ionic conductivity, and thermal runaway management functions, effectively improving the safety and cycle stability of semi-solid-state lithium-ion batteries.

The application belongs to the technical field of coal rock drilling, and relates to a viscous glue emulsion added in drilling fluid for enhancing the strength of coal rock and a preparation method thereof. The emulsion is prepared through emulsion polymerization, and the preparation raw materials thereof include an oil phase, an aqueous phase and a surfactant. The oil phase comprises a main monomer, a functional monomer, a crosslinking monomer, a first initiator and a solvent. The emulsion prepared by the application can block coal rock pores to prevent the invasion of drilling fluid, and can enhance the compressive strength of coal rock through the bonding effect. Meanwhile, the emulsion can reduce the risk of sticking due to the difference in affinity between coal and metal. Mixing the prepared emulsion with drilling fluid and soaking coal rock can basically maintain the original strength of the coal rock, and solve the problems of well wall instability and blockage of drilling in the process of coal rock gas drilling.