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Epoxy/α-alumina nanocomposite with decreased dielectric constant and dielectric loss
- Source :
- Polymer Composites. 39:2307-2319
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- In this work, the dielectric spectroscopy and dynamic mechanical thermal spectroscopy of neat epoxy and epoxy nanocomposites modified by boehmite, γ-alumina and α-alumina nanoparticles, respectively, were investigated. The dielectric behavior of epoxy resin was significantly affected by the incorporation of α-alumina nanofiller. The values of real and imaginary part of relative permittivity of epoxy/α-alumina nanocomposite were even lower than these of neat epoxy. On the contrary, these values of boehmite and γ-alumina nanocomposites were higher than these of neat epoxy. The glass transition temperature (Tg) determined by dynamic mechanical thermal analysis (DMA) was obviously decreased when boehmite nanofiller was added into the epoxy nanocomposite. The value of Tg was slightly decreased by γ-alumina and apparently increased by α-alumina nanofiller. These changes of performance may be attributed to that the existence of α-alumina nanoparticles restricted the mobility of polymer molecular chains. POLYM. COMPOS., 2016. © 2016 Society of Plastics Engineers
- Subjects :
- 010302 applied physics
chemistry.chemical_classification
Boehmite
Materials science
Nanocomposite
Polymers and Plastics
02 engineering and technology
General Chemistry
Polymer
Epoxy
Dielectric
021001 nanoscience & nanotechnology
01 natural sciences
Dielectric spectroscopy
chemistry
visual_art
0103 physical sciences
Materials Chemistry
Ceramics and Composites
visual_art.visual_art_medium
Dielectric loss
Composite material
0210 nano-technology
Glass transition
Subjects
Details
- ISSN :
- 02728397
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- Polymer Composites
- Accession number :
- edsair.doi...........bedb53c96da8910ef0583e16282a80f8