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Title: | Evaluation of cure characteristic, physico-mechanical, and dielectric properties of calcium copper titanate filled acrylonitrile-butadiene rubber composites: Effect of calcium copper titanate loading | Authors: | Luangchuang P., Chueangchayaphan N., Sulaiman, M.A. Chueangchayaphan W. |
Keywords: | Acrylonitrile-butadiene Rubber;Calcium copper titanate;Composite;Dielectric properties;Mechanical properties | Issue Date: | Oct-2020 | Publisher: | Wiley Periodicals, Inc. | Journal: | Journal of Applied Polymer Science | Abstract: | Calcium copper titanate (CCTO) has been synthesized by high temperature solid-state reaction from calcium carbonate, copper (II) oxide, and titanium dioxide as the starting materials. The formation and morphology of CCTO were confirmed by X-ray diffraction, Fourier-transformed infrared spectrophotometry, scanning electron microscopy (SEM), and particle size analysis. In order to develop flexible dielectric materials, acrylonitrile-butadiene rubber (NBR)-based composites were prepared with CCTO content varied from 0 to 120 phr (parts per hundred rubber). The cure characteristics of composites were assessed. High-dielectric constant CCTO particles were blended into NBR to make composites with improved dielectric constant. Results showed that the NBR/CCTO composites had a high dielectric constant (10–20) with low dielectric loss (<0.4) and low conductivity (<10−3 μS/cm) at frequencies up to 106 Hz. However, the higher CCTO loadings had agglomeration in the NBR matrix, and thus tensile strength and elongation at break sharply deteriorated due to poor rubber-filler interactions. The results showed lower storage modulus E′ and a reduction in Tg with the incorporation of CCTO in NBR matrix. Moreover, improved thermal stability of the NBR/CCTO composites was achieved. SEM was used to observe the dispersion of CCTO particles in NBR matrix. |
Description: | Web of Science / Scopus |
URI: | http://hdl.handle.net/123456789/318 | ISSN: | 00218995 | DOI: | 10.1002/app.49136 |
Appears in Collections: | Faculty of Bioengineering and Technology - Journal (Scopus/WOS) |
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