El proceso de moldeo por compresión de compuestos de fibra de carbono: Una visión detallada

The Compression Molding Process of Carbon Fiber Composite Materials: A Comprehensive Guide

Preparatory Steps

1.Mold Preparation: Before starting the molding process, carefully clean the molding tool and mold. Remove any residual resin and debris from previous uses to ensure the mold surface is clean and smooth, providing a good foundation for the molding of carbon fiber composite materials.

2.Raw Material Readiness: Prepare the carbon fiber prepreg, which is the primary raw material for manufacturing composite products. After retesting and confirming the quality of the prepreg, calculate the required area and number of layers based on the product design. Layer the materials according to specifications and pre-press them to form a regularly shaped, dense material stack with consistent quality.

Molding Procedure

1.Material Placement and Mold Closing: Place the prepared material stack into the mold and insert a plastic airbag inside. Close the mold and transfer it to the molding press. Apply constant pressure and temperature to the internal plastic airbag, set a fixed curing time, and initiate the solidification process.

2.Cooling and Demolding: After the pressing is complete, cool the mold for a period. Once cooled, open the mold, carefully remove the product, and clean the tooling mold to prepare for the next production cycle.

3.Post-Demolding Processing: After demolding, clean the product thoroughly. Use a steel brush or copper brush to remove residual plastic, then blow it clean with compressed air. Finally, polish the molded product to achieve a smooth and neat surface finish.

Quality Inspection

1.Nondestructive Testing (NDT): Conduct NDT on the molded product to check for internal defects and ensure its structural integrity and performance meet requirements.

2.Final Inspection: Perform a comprehensive final inspection of the product, including dimensional accuracy, surface quality, and mechanical properties, to ensure it satisfies the specified standards before delivery.

Critical Factors in the Molding Process

1.Temperature and Uniformity: The interaction between resin and curing agent, as well as the uniformity of the reaction, directly impact the surface quality and degree of curing of the molded product. Precise control of temperature and uniformity is essential to ensure optimal molding outcomes.

2.Pressure Magnitude and Uniformity: Pressure plays a key role in air removal and resin flow within the mold, influencing the surface quality and mechanical properties of the final product. Consistent and appropriate pressure application is critical to achieving high-quality molded components.

3.Curing Time: The duration of curing determines the extent of the curing reaction. Adequate curing time ensures thorough resin solidification while balancing production efficiency to meet manufacturing demands.

4.Mold Cavity Thickness: The mold cavity thickness dictates the final product’s thickness. Based on the unique characteristics of carbon fiber materials, designing a reasonable mold cavity thickness is crucial for producing products that meet performance and functional requirements.