Research On Prepreg Preparation Equipment With Hot-melt And Its Key Technology

The topic is about the research on prepreg preparation equipment with hot-melt and its key technology. Prepreg equipment is speciafically used in the production of prepreg, prepregs are widely used in the aerospace industry, but this equipment is embargoed to China in Western countries, restricting the development of our aerospace industry, so our country has also designed a number of prepreg equipment in the near few years, but which is unsatisfactory for various reasons and the problems. To this end, the research group improves and refines on the basis of the original equipment, designs a new prepreg preparation equipment, the equipment uses a direct prepreg preparation method, eliminats the process for prefabricating film paper, and achieves longer prepreg in a single volume production. The main content of the paper has the following sections:1. The paper proposes a new type of hot-melt prepreg material preparation methods firstly:the membrane and prepreg process of the previous hot-melt method combine in a process, which can achieve a continuous prepreg production.2. According to the process of preparation of the prepreg and the overall function requirements of the prepreg equipment, The paper improves and designs some of the devices of the prepreg equipment:the unwinding device, dipping device, cooling device, plus film device and the winding device, dipping device and thes winding device among these device are the innovation, and designs3D model of these devices in the Pro/E environment.3. The paper analyzes and research some key technology of the prepreg equipment:The gel content is a key factor in the dipping process, the paper uses capacitive sensors to detect the gel content in the fiber dipped field, analyzes capacitance capacitance in the sensor to detect changes in the prepreg gel content changes by ANSYS, and uses stepper motor control system to adjust;, the paper proposes a new prepreg winding method in winding device-In the mandrel rotation andcontrol system for rotary motion and reciprocating motion of the mandrel in the axial direction of rotary motion control, prepreg fiber yarn with a thin film spirals winding mandrel under a certain speed and tension, and analyzes some theoretical knowledge of prepreg winding.The prepreg preparation equipment of the paper can product the3,000mm length of the prepreg, the equipment has the advantages of simple structure, good process performance, less isolation paper production and higher efficiency, and believe the prepreg production will be wide range of applications in the future.