Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11004256 | Composites Science and Technology | 2018 | 8 Pages |
Abstract
Flexible strain sensors made by conductive elastomer composites have attracted increasing attention. In this paper, the electromechanical properties of graphene-silicone rubber nanocomposites are studied systematically. First, the conductive nanocomposites composed of graphene and silicone rubber are prepared by means of co-coagulation, which shows a lower percolation threshold with 1.87â¯wt% (0.94â¯vol%). Second, the rubber nanocomposites with different graphene contents exhibit a very high strain sensitivity (gauge factorâ¯>â¯143) and a larger strain sensing range (>170%), also, the good recoverability and reproducibility have been found during the loading-unloading cycle. Finally, the analytical model based on the connectivity of the graphene nanosheets and the viscoelasticity of the rubber matrix is developed to describe the electromechanical properties and explain the 'shoulder peak' phenomenon, also a typical application example about monitoring the operate state of the rubber seal is given.
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Engineering
Engineering (General)
Authors
Heng Yang, XueFeng Yao, Zhong Zheng, LingHui Gong, Li Yuan, YaNan Yuan, YingHua Liu,