Covalent modified carbon fiber reinforced polyurea composite material and preparation method thereof

• Main Authors: ZHOU RUDONG, ZHU XIAOFENG, WANG LIJUN, HUANG LEI, KONG DECHENG, LI WENKAI
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention belongs to the field of chemical engineering, and particularly relates to a covalent modified carbon fiber reinforced polyurea composite material which comprises the following raw material components in parts by mass: 20-30 parts of a polyurea elastomer and 6-9 parts of an NCO-based carbon fiber material, the raw material components of the polyurea elastomer comprise a component A and a component B, the component A is prepared from the following components in parts by mass: 30 to 60 parts of diisocyanate, 10 to 30 parts of chain extender and 5 to 10 parts of catalyst; the component B comprises 30-60 parts of an amino-terminated compound, 10-30 parts of a chain extender and 5-10 parts of an auxiliary agent; the preparation method comprises the following steps: adding the NCO-based carbon fiber material into the component A to obtain a mixture A1, spraying and molding the component A1 and the component B by using a polyurea spray gun, and drying to obtain the covalent modified carbon fiber reinfor