Graphene nanosheet/block copolymer composite modified asphalt as well as preparation method and application thereof

• Main Authors: ZHANG AIQIN, ZHAO KUNPENG, PANG LAIXUE, YUAN KAI, SUN HUADONG, XIONG DALU, ZHOU LIANG, DING YONGLING, QU LEI
• Format: Patent
• Language: Chinese; English
• Published: 02.05.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses graphene nanosheet/block copolymer composite modified asphalt as well as a preparation method and application thereof, and belongs to the technical field of nano material modified asphalt. The graphene nanosheet loaded with the metal oxide is prepared through a one-step in-situ method, the nanosheet is functionally modified, and then the nanosheet and the functionally modified styrene block copolymer are jointly used for modifying the matrix asphalt, so that the graphene nanosheet/block copolymer composite modified asphalt is finally obtained. By adding the segmented copolymer and the graphene nanosheet loaded with the oxide, the temperature rise and self-repairing performance of the asphalt material under microwave thermal induction are improved, and meanwhile, the prepared modified asphalt material is good in comprehensive performance, excellent in oxidation resistance and rutting resistance, not prone to deformation, capable of being repaired and long in service life. 本发明公开了一种石墨烯纳米片