Preparation method of long carbon fiber reinforced composite material for high-strength electromagnetic shielding

• Main Authors: ZHI JIEYING, LIU TIANGANG, PENG JIANCHENG, LUO LINA, DENG JINPING, QIAO SHENGGUO
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PRINTED CIRCUITS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention belongs to the technical field of new materials, and particularly relates to a preparation method of a long carbon fiber reinforced composite material for high-strength electromagnetic shielding, which comprises the following steps: selecting carbon fibers and nickel-plated carbon fibers, respectively carrying out surface treatment on the carbon fibers and the nickel-plated carbon fibers, and mixing the treated carbon fibers and the nickel-plated carbon fibers to obtain hybrid fibers; the hybrid fibers are subjected to fiber broadening and prestress application through a pretreatment dispersion process; and finally, compounding the matrix and the hybrid fiber according to a compounding ratio, and sequentially carrying out multi-stage die head treatment, water cooling, air cooling and traction and grain-sized dicing to prepare the composite material. According to the preparation method of the long carbon fiber reinforced composite material, on the premise of ensuring relatively excellent electrom