Preparation of BTO@GO@PU Composite Membrane and its Application in Microwave Absorption Field
| Autor: | Yong Jie Yan, Qing-Qing Ni |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Field (physics) Mechanical Engineering Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Barium titanate General Materials Science Composite membrane 0210 nano-technology Absorption (electromagnetic radiation) Microwave |
| Zdroj: | Materials Science Forum. 923:3-7 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.923.3 |
| Popis: | Barium titanate/graphene oxide/polyurethane (BTO@GO@PU) composite membranes for microwave absorption were designed and fabricated by mechanical-blending of BTO and GO in PU medium, followed by mold formation. The cross section morphology of the BTO@GO@PU membrane indicated that the BTO nanoparticles with 450 nm average diameter are successfully incorporated into the PU matrix. Mechanical tensile measurement showed that, as the amount of BTO nanoparticles increased from 5 wt% to 20 wt%, the elastic modulus of the corresponding membrane increased up to 23.0 MPa elongation with the elongation above 450 %. Microwave absorption property of the BTO@GO@PU membranes were evaluated by measuring its reflection loss in the frequency range of 0.1-18 GHz. With the addition of BTO up to 20 wt%, the maximum absorptivity of the composite reached up to 51 %. This is attributed to the dielectric loss of BTO nanoparticles. |
| Databáze: | OpenAIRE |
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