Figure 2 E indicates the ε′ and ε′′ show an increasing trend with the mole fraction of P(ILs-AM) increasing in the X-band (8.2–12.4 GHz).
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Flexible, large area preparable phase change PVA/P(ILs-AM)/SSD films for electromagnetic wave absorption and infrared stealth.
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The viscosity shows a decreasing trend with increasing frequency, indicating the shear-thinning properties of the films from 1 Hz onwards. 37 Importantly, the initial viscosity rises with the increase of P(ILs-AM), and their values are 0.36×10 4 , 18.88×10 4 , 52.23×10 4 , and 66.80 × 10 4 Pa·s, respectively.