Multifunctional PMMA-Ceramic composites as structural dielectrics

Stefanescu, Eduard A.; Tan, Xiaoli; Lin, Zhiqun; Bowler, Nicola; Kessler, Michael R.

doi:10.1016/j.polymer.2010.09.025

Cited by 74 publications

(56 citation statements)

References 37 publications

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“…50,51 The increased dielectric loss at low frequencies is attributed to the interfacial polarization and free charge motion in material. 27,30,32 TMA is a highly sensitive method for the measurement of expansion and contraction of cross-linked or filled materials.…”

Section: Resultsmentioning

confidence: 99%

“…31 The PMMA-based ternary composites also exhibited improved dielectric properties. 32 For PMMA/CSTO composite system, the permittivity as high as 15.7 at 100 Hz has been reported. 33 These investigation clearly demonstrated that the final properties of the composites are not only dependent on the type of polymer and its structure but it is also dependent on the type of ceramic, the interface bonding between the polymer and the ceramic, the thermal properties and the heat capacities of the individual components.…”

Section: Introductionmentioning

confidence: 99%

“…28,29 Ceramics were incorporated into the PMMA matrix to improve the overall permittivity of PMMA. [30][31][32][33] The Al 2 O 3 loading to the level of 45 vol%, in PMMA had increased the permittivity, which was attributed to the space charge polarization mechanism. 30 Similarly, permittivity as high as 19 has been reported for the PMMA composite comprising 40 vol% nanocrystallites of BaTiO 3 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sr2TiMnO6 fillers on mechanical, dielectric and thermal behaviour of PMMA polymer

et al. 2015

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Composites of poly(methyl methacrylate) (PMMA) and Sr 2 TiMnO 6 (STMO) were fabricated via melt mixing followed by hot pressing technique. These were characterized using X-ray diffraction (XRD), thermo gravimetric analysis (TGA), differential scanning calorimetry (DSC), thermo mechanical analysis (TMA) and impedance analyser for their structural, thermal and dielectric properties. The coefficient of thermal expansion (CTE) was measured between 40 C and 100 C for pure PMMA is 115.2 ppm/ C, which was decreased to 78.58 ppm/ C when the STMO content was increased to 50 wt.% in PMMA. There was no difference in the glass transition (T g ) temperature of the PMMA polymer and their composites. However, the FTIR analysis indicated possible interaction between the PMMA and STMO. The density and the hardness were increased as the STMO content increased in the PMMA matrix. Permittivity was found to be as high as 30.9 at 100 Hz for the PMMAþSTMO-50 wt.% composites, indicating the possibility of using these materials for capacitor applications. The thermal stability of polymer was enhanced by incorporation of STMO fillers.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Sr2TiMnO6 fillers on mechanical, dielectric and thermal behaviour of PMMA polymer

et al. 2015

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“…Recently, polymer-based composites have been tried as dielectrics for charge storage applications in capacitors and organic circuit boards [1][2][3][4][5][6][7][8]. Such composites should exhibit high dielectric permittivity (ε') and low dielectric loss (tan δ) to be an effective dielectric [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Such composites should exhibit high dielectric permittivity (ε') and low dielectric loss (tan δ) to be an effective dielectric [1][2][3][4][5]. However, the dielectric permittivity of polymers is very low (e.g., ε' of PP < 3) and achieving a high ε' and low tan δ in a polymer system remains challenging [1][2][3][4][5][6][7][8]. One approach is to add ceramic fillers, which can increase ε' of polymer by about ten times at loadings close to 50 vol.% [6][7][8].…”

Section: Introductionmentioning

confidence: 99%