4results about How to "Block through" patented technology

The invention provides a biodegradable graphene / PBAT composite packaging bag and a preparation method thereof. The method comprises the following steps: S1, heating and calcining rice husks in an air furnace to obtain rice husk ash; s2, mixing the rice hull ash with potassium hydroxide, and reacting at 700-900 DEG C; s3, adding a product obtained in the step S2 into lime milk for full reaction, precipitating calcium carbonate among graphene, then filtering, cleaning to be neutral, and drying to obtain a calcium carbonate / graphene composite material; s4, blending the calcium carbonate / graphene composite material with a PBAT master batch, performing melt extrusion by using a double-screw extruder, performing air cooling, and performing pelletizing for standby application to obtain a calcium carbonate / graphene / PBAT composite master batch; and S5, preparing the full-biodegradable graphene-based PBAT film from the calcium carbonate / graphene / PBAT composite master batch by adopting a film blowing method, and then preparing the packaging bag.

The invention provides a display panel and a display device. The display panel comprises a driving substrate and a light-emitting carrier plate. The driving substrate comprises a silicon-based substrate and a driving circuit layer. The light-emitting carrier plate comprises a glass substrate, a light-emitting unit, a color-changing layer and a heating part. The color changing layer is arranged between the adjacent light emitting units, extends along a plane parallel to the glass substrate and is in contact with the edge of one side, close to the glass substrate, of each light emitting unit, and the orthographic projection of the color changing layer on the glass substrate covers the heating through hole in the glass substrate; and the heating part is filled in the heating through hole. When the temperature of the light-emitting unit is smaller than or equal to the threshold temperature, the color-changing layer has first transmissivity, and the heating part is used for heating under irradiation of light penetrating through the color-changing layer; when the temperature of the light-emitting unit is larger than the threshold temperature, the color-changing layer has second transmissivity smaller than the first transmissivity and is used for blocking light. The display panel can improve the influence of low temperature on the luminous efficiency of the luminous unit and reduce light leakage at the edge position of the luminous unit.

The utility model discloses a multilayer composite food packaging film, which relates to the technical field of packaging films and comprises a packaging film main body, a protective layer, a barrier layer, an adding layer and a contact layer are respectively arranged in the packaging film main body, the protective layer is arranged at the top of the barrier layer, the barrier layer is arranged at the top of the adding layer, and the adding layer is arranged at the top of the contact layer. An adhesive is arranged between every two of the protective layer, the barrier layer, the adding layer and the contact layer, and the interior of the protective layer is made of a high-density polyethylene material. According to the multi-layer composite food packaging film disclosed by the utility model, a plurality of functional layers are arranged in the packaging film main body and comprise the protective layer, the barrier layer, the adding layer and the contact layer, and the layers are tightly adhered by adopting the water-based adhesive; by adopting a multi-layer composite structure, multiple functions of physical protection, gas and moisture barrier, antibacterial protection, food safety and the like are realized, and the storage safety and freshness of food are effectively improved.

This invention belongs to the technical field of chain plate compost turners, and discloses a tracked chain plate compost turner. It includes a base, a main body for turning materials, a tracked walking mechanism for driving the main body, and a lifting mechanism for controlling the angle of the main body. By incorporating a tracked walking mechanism, the main body of the chain plate compost turner can move freely without being restricted by the production site, allowing for adaptability to different locations. Through the inclusion of a crushing component, during the material turning process, the drive shaft of the main body drives a circular plate to rotate via a rotating column. The circular plate, via a T-shaped track, drives blades to reciprocate, continuously cutting and crushing the material. Since the distance between two adjacent scrapers is equal to the arc length between two adjacent grooves, the blades can cut and crush the material between each groove.