▎ 摘　　要

Since various criteria including effective absorption intensity, broad absorption bandwidth, sufficient mechanical properties and excellent stability are required to meet the benchmark in practical service, here we propose a novel strategy to fabricate strong and thermostable polymeric graphene/silica textile composites for practical microwave absorption applications. For achieving homogeneous configuration, a unique silica textile coupled with freeze-drying method is employed as the critical factor in the formation of the polymeric composites, allowing reduced graphene oxide (RGO) to in situ form three-dimensional conductive frameworks. With the co-existence of silica textiles and thermoset polymers, such integrated bi-matrices offer the composites with substantial reinforcement in the mechanical properties and thermal stability. As expected, the as-fabricated lightweight composites (similar to 1 g/cm(3)) present strong tensile strength of 40 MPa and high thermal stability beyond 225 degrees C (95% mass retention in air), coupled with a microwave absorption peak at -36 dB and effective absorption in the full X-band at a low filler loading (4.1 wt% RGO). Implication of the results suggests that the excellent overall performance allows such novel polymeric composites for practical microwave absorption applications. (C) 2016 Elsevier Ltd. All rights reserved.