Carbon fiber prepreg is a composite material made from materials such as carbon fiber yarn, epoxy resin, release paper, etc., which have undergone processes such as coating, hot pressing, cooling, laminating, and coiling. For composite material technology, prepreg is the raw material for manufacturing structures and can be directly used to manufacture various composite structural components. So, are you unfamiliar with the production process of carbon fiber prepreg?

At present, the production of carbon fiber prepreg mostly uses thermosetting resins (such as epoxy resins), and the production processes mainly include solution method and hot melt method.

Solution method: Dissolve resin in a low boiling point solvent to form a solution with a specific concentration, and then immerse fiber bundles or fabrics in the resin solution at a specified speed. Use auxiliary tools to control the resin content, and then dry to evaporate the low boiling point solvent before winding.

Hot melt method: Under certain pressure and temperature, resin film and corresponding fibers or fabrics that meet the requirements are pressure impregnated with hot melt adhesive, and the resulting material is hot melt prepreg. Its advantage is that the resin content is controllable, and it can produce pre impregnated materials with a specified weight. This method is generally used in practical 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 properties of carbon fiber prepreg, and the types of prepreg vary depending on the application field. Currently, China has made significant progress in this area of research.

The carbon fiber composite materials that we are familiar with are made by using carbon fiber prepreg through a series of molding processes, and carbon fiber products have also been applied in many fields.