▎ 摘　　要

NOVELTY - Preparing graphene/silicone rubber coaxial fiber-based elastic core-spun yarn involves mixing expanded graphite with component A (raw rubber) of two-component silicone rubber, and processing with a high-speed emulsifier. Expanded graphite is peeled off under the action of raw rubber's stickiness and high-speed shearing to form few-layer or even single-layer graphene. Component B (catalyst) of two-component silicone rubber is added, continued emulsification treatment, and graphene/two-component silicone rubber dispersion is obtained after vacuuming and defoaming. The graphene/silicone rubber coaxial fiber is obtained, the core layer is graphene/silicone rubber composite fiber, and the shell layer is pure silicone rubber. The graphene/silicone rubber composite fiber and the graphene/silicone rubber coaxial fiber are intertwined to form elastic twisted pairs, and chemical fibers are blended on the surface to obtain graphene/silicone rubber coaxial fiber-based elastic core-spun yarn. USE - Method for preparing graphene/silicone rubber coaxial fiber-based elastic core-spun yarn for use in friction nanogenerators and flexible motion sensors (claimed) ADVANTAGE - The method enables preparing graphene/silicone rubber coaxial fiber-based elastic core-spun yarn that has excellent elasticity, durability and stability, using single core-spun yarn as a frictional nanogenerator, which is directly adhered to the human body or woven into fabrics to effectively monitor human motion as a self-powered sensor. DETAILED DESCRIPTION - Preparing graphene/silicone rubber coaxial fiber-based elastic core-spun yarn involves mixing expanded graphite with component A (raw rubber) of two-component silicone rubber, and processing with a high-speed emulsifier for 10-60 minutes. Expanded graphite is peeled off under the action of raw rubber's stickiness and high-speed shearing to form few-layer or even single-layer graphene. Component B (catalyst) of two-component silicone rubber is added, continued emulsification treatment for 2-10 minutes, and graphene/two-component silicone rubber dispersion is obtained after vacuuming and defoaming. The resulting graphene/two-component silicone rubber dispersion is loaded into a syringe, and the above dispersion is injected into hot methyl silicone oil through an injection device. The two-component silicone rubber is heated and cured into fibers to obtain graphene/silicone rubber composite fibers. The graphene/two-component silicone rubber dispersion is used as the core layer, and the pure two-component silicone rubber dispersion is used as the shell layer and are packed in two different syringes and connected to the coaxial on the inner and outer tubes of the needle. The graphene/silicone rubber coaxial fiber is obtained, the core layer is graphene/silicone rubber composite fiber, and the shell layer is pure silicone rubber. The graphene/silicone rubber composite fiber and the graphene/silicone rubber coaxial fiber are intertwined to form elastic twisted pairs or multi-stranded wires, and chemical fibers are blended on the surface to obtain graphene/silicone rubber coaxial fiber-based elastic core-spun yarn. An INDEPENDENT CLAIM is included for a graphene/silicone rubber coaxial fiber-based elastic core-spun yarn, which is prepared.