2results about How to "Does not change shape" patented technology

This invention discloses a method for preparing carbon fiber epoxy composite materials that combine high mechanical properties and a low coefficient of thermal expansion. Belonging to the field of composite materials, it addresses the technical challenge of simultaneously improving the mechanical properties and reducing the coefficient of thermal expansion of composite materials using existing carbon fiber processing methods. By non-covalently modifying carbon nanotubes with ionic liquids, unlike traditional covalent modification methods, the intrinsic strength of carbon nanotubes is preserved, constructing a multi-mechanism synergistic interface reinforcement system. This specifically addresses the key problems of traditional sizing agents having a single interfacial effect and hindered stress transmission. In this invention, flexible polyimide acts as a bridge at the interface, while rigid carbon nanotubes construct an effective armor on the fiber surface. The two form a rigid-flexible composite structure at the interface, which effectively alleviates interfacial stress concentration, significantly improves interfacial stress transmission efficiency, achieves uniform dispersion of external loads, and ultimately improves the mechanical properties of the carbon fiber epoxy composite material.

The utility model relates to a bolt support assembly and a plug, and belongs to the technical field of power supplies. The bolt support assembly comprises a bolt support and a bolt assembly, the bolt support is provided with a first pole jack and a second pole jack, and the bolt assembly comprises a first pole bolt and a second pole bolt; the first pole plug pin is fixed in the first pole jack, and the second pole plug pin is fixed in the second pole jack; the wiring end of the first pole bolt is positioned between the wiring end of the second pole bolt and the bolt bracket; the wiring end of the first pole plug pin is used for being electrically connected with an overload protection module arranged between the first pole jack and the second pole jack, and the wiring end of the second pole plug pin is used for being electrically connected with a power line. According to the invention, the wiring efficiency can be improved.