51results about How to "Avoid falling off etc." patented technology

The invention provides a self-supporting carbon nanofiber loaded molybdenum disulfide composite material as well as a preparation method and application thereof, and belongs to the field of aluminum ion batteries. According to the preparation method, (NH4) 2MoS4 is directly utilized for reduction to generate MoS2, the MoS2 has the unique property of flexible self-supporting and can be directly used as an electrode, the phenomena that the conductivity is reduced, high temperature resistance is not high, and active substances fall off in the circulation process due to a tedious electrode preparation process and the use of a binder are avoided, the carbon nanofibers can be used as a supporting substrate of molybdenum sulfide, and the preparation method is simple and convenient. According to the present invention, in the charge-discharge cycle process, the structure damage of molybdenum sulfide in the cycle process can be avoided, the cycle performance is stable, the unique embedding structure of molybdenum disulfide in the carbon nanofiber is provided, the embedding and the de-embedding of aluminum ions in the battery charge-discharge process are easily achieved, and the practical application can be met.

The invention belongs to the technical field of stage frames, and relates to a square sleeve structure module of a stage frame. A square sleeve structure module sleeves a truss and comprises a first frame and crawling modules, wherein the first frame is in a "cube" type and composed of four vertical columns and eight transverse beams connected with the vertical columns, and the crawling modules are welded to the vertical columns and are close to the transverse beams; the crawling modules comprise rubber tires and rubber tire fixing members, the rubber tires are hinged to the rubber tire fixingmembers, the rubber tire fixing members are welded to the vertical columns, and curved surfaces fitting with the truss are formed in the rubber tires; the vertical columns and the transverse beams are connected by welding; a second frame is welded to the circumferential of the first frame; the second frame comprises internal transverse beams, internal vertical beams, and corner pieces, wherein the corner pieces are welded at joints formed by the internal transverse beams and the internal vertical beams. According to the square sleeve structure module of the stage frame, the problems of inconvenient installation, short service life, weak structure, and easy pollution to the surrounding environment of existing stage frame structures can be overcome, the overall square sleeve structure module of the stage frame is beautiful and elegant, long-term maintenance is not needed, and the using cost is low.

The invention discloses a preparation method of a molecular engram composite film for separating a tryptophane isomer, which comprises the following steps: by using a polyvinylidene fluoride / polyvinyl alcohol blended film as the base film, coating chitosan used as a functional polymer molecular engram coating liquid on the surface of the base film in a crosslinking manner; and after the solvent is volatilized to dryness, eluting to remove template molecules, thus obtaining the molecular engram composite film capable of performing specific recognition on the template molecules. The composite film prepared by the method can continuously and fast realize the separation of a tryptophane isomer, has the advantages of simple separation operation, high efficiency and energy saving, and can be easily industrialized.

The invention discloses a decorative wall structure for a long-term water-immersion area, which includes sequential application, a permeable crystalline self-waterproof repair layer formed on the base layer, a sealing and hardening primer layer, a high-elastic flexible waterproof layer, and enhanced bonding Layer and finishing layer, an interface treatment net is arranged between the high elastic flexible waterproof layer and the reinforced adhesive layer, one side of the interface treatment net is embedded on the surface of the high elastic flexible waterproof layer, and the other side is located on the reinforced adhesive layer. In knot layer. In the present invention, by embedding the interface treatment net between the high elastic flexible waterproof layer and the reinforced adhesive layer, the interface treated net and the joints on its nodes can form a firm mechanical bond with the high elastic flexible waterproof layer and the enhanced adhesive layer. The bite force can improve the tensile bonding strength of the interface between the reinforced adhesive layer and the highly elastic flexible waterproof layer, so that the facing wall can still have good durability even in long-term water-immersion areas.