▎ 摘　　要

Efficient fabrication of graphene oxide (GO) network in rubber composites is critical for enhancing its mechanical properties. Herein, the surface of fibrous sepiolite is modified with amino-silane to form amine-functionalized fibrous sepiolite (afSep), then the segregated networks of GO and afSep hybrid sheets in natural rubber (NR) latex can be self-assembled by the electrostatic attraction between the protonated amine groups of afSep and the carboxyl groups/epoxy groups of GO, thereby casting and drying at room temperature to form GO-afSep/NR composite. When the hybrid network is assembled with 0.2 phr (per hundred parts of rubber) GO and 0.4 phr afSep in un-crosslinked NR composite, the tensile strength and elongation at break improve by 33.9% and 4.8% compared with un-crosslinked GO/NR composite, respectively, which is attributed to the segregated network of the afSep fibers attached to the basal plane of GO sheets in NR composite.