Dielectric, mechanical and thermal properties of polymer/BaTiO3 composites for embedded capacitor

Barium titanate (BaTiO3) filled polymethylmethacrylate (PMMA) composites were prepared using the simple solution method followed by hot pressing. The content of BaTiO3 was varied from 0 to 65vol.%. Scanning electron microscopy showed good dispersion and adhesion of BaTiO3 with the PMMA matrix. The d...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 2013-01, Vol.44 (1), p.128-132
Main Authors: Goyal, R.K., Katkade, S.S., Mule, D.M.
Format: Article
Language:English
Subjects:
A. Polymer–matrix composites (PMCs)
adhesion
Applied sciences
B. Electrical properties
B. Thermal properties
barium
Barium titanates
Composites
copper
Dielectric constant
Dispersions
Dissipation factor
E. Powder processing
equations
Exact sciences and technology
Forms of application and semi-finished materials
glass transition temperature
Hot pressing
Laminates
Mathematical analysis
Physicochemistry of polymers
Polymer industry, paints, wood
Polymer matrix composites
Polymethyl methacrylates
pressing
scanning electron microscopy
Technology of polymers
thermal properties
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Summary:Barium titanate (BaTiO3) filled polymethylmethacrylate (PMMA) composites were prepared using the simple solution method followed by hot pressing. The content of BaTiO3 was varied from 0 to 65vol.%. Scanning electron microscopy showed good dispersion and adhesion of BaTiO3 with the PMMA matrix. The dielectric constant of the composites increased significantly. There was weak dispersion in the dielectric constant of the composites (up to 45vol.%) with frequency between 100Hz and 15MHz. The dissipation factor of the composites increased from 0.021 for pure PMMA to 0.029 for 45vol.% composites. However, 65vol.% composite showed dispersion in dielectric constant with increasing frequency and higher dissipation factor. The Lichtenecker equation agreed well with the experimental data. The microhardness and the glass transition temperature of the composites increased approximately 4.7-fold and 42°C, respectively, compared to pure PMMA. The CTE of the 65vol.% composite is close to that of copper.
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2012.06.019