Carbon fiber prepreg is a composite material made of carbon fiber yarn, epoxy resin, release paper and other materials through coating, hot pressing, cooling, laminating, rolling and other processes. For composite material technology, prepreg is the raw material for manufacturing structures and can be directly used to manufacture various composite structural parts.
At present, thermosetting resins (such as epoxy resin) are mostly used in the production of carbon fiber prepregs. The main production processes include solution method and hot melt method.
Solution method: The resin is dissolved in a low boiling point solvent to form a solution with a specific concentration, and then the fiber bundles or fabrics are impregnated with the resin solution at a specified speed. Use auxiliary tools to control the content of the resin, and then dry it. The low-boiling solvent evaporates and then winds up.
Hot-melt method: Under a certain pressure and temperature, the resin film and corresponding fibers or fabrics that meet the requirements are pressure-impregnated with hot-melt impregnation. The material produced is hot-melt prepreg. Its advantage is that the resin content is controllable and prepregs with a specified weight can be produced. This method is generally used in actual production.
At present, many high-performance products use carbon fiber composite materials as structural components. The strength, durability and other characteristics of carbon fiber composite materials depend on the characteristics of carbon fiber prepregs. Depending on the field of use, the types of prepregs also vary. different.
The carbon fiber composite materials we are familiar with are made of carbon fiber prepreg through a series of molding processes. Carbon fiber products are also widely used in many fields.
