材料科学
复合材料
电介质
填料(材料)
复合数
天然橡胶
硫化
高-κ电介质
基质(水族馆)
二氧化钛
光电子学
海洋学
地质学
作者
Abdullah G. Al‐Sehemi,Ahmed A. Al‐Ghamdi,Nikolay Dishovsky,Petrunka Malinova,Nikolay Atanasov,Gabriela Atanasova
标识
DOI:10.1177/0967391120910879
摘要
The vulcanization properties, physicochemical, dielectric, and electrical properties of natural rubber-based composites were investigated and compared. The composites contain 30–70 phr functional fillers having low (silicon dioxide (SiO 2 )) and high (titanium dioxide (TiO 2 )) dielectric constant values. The possibilities of using the composites as substrates in compact flexible antennas have been evaluated. Fillers are also characterized. It has been shown that they have a noticeable but different influence on all the properties of the composites studied. That is primarily due to the different structure and specific properties of SiO 2 and TiO 2 , thereby determining the different “filler–filler” and “rubber–filler” interactions. The composite filled with TiO 2 at 70 phr has a better capacity to act as a substrate in body area network antennas than the SiO 2 -filled composites. An antenna with such a substrate has features that meet all the requirements of the industrial, science, and medical spectrum. TiO 2 composites do not change their resistance to pressure or deflection within certain limits, having a self-cleaning and antibacterial effect, which is also beneficial for their usage in antennas that are left on or near the human body.
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