期刊
CARBON
卷 100, 期 -, 页码 109-117出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.01.002
关键词
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资金
- 973 Project [2015CB932500]
- NSF of China [51532002, 51372022, 51575030, 51302011]
- Fundamental Research Funds for the Central Universities [FRF-TP-15-048A3]
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.
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