Electret composite with deep trapping centers on the interphase boundary

Electret composite with deep trapping centers on the interphase boundary

An electret composite comprising a polymer matrix material that contains particles of a piezoelectric material with deep trapping centers on the interphase boundaries between the matrix and particles of a piezoelectric material. The piezoelectric material may have a tetragonal or a rhombohedral stru...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SAFAROV NURU ARAB OGLU, SULTANAXMEDOVA IRADA SULTANAXMED GIZI, BAYRAMOV AZAD AGALAR OGLU, KURBANOV MIRZA ABDUL OGLU, MUSAEVA SEVINJ NADIR GIZI
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRICITY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:An electret composite comprising a polymer matrix material that contains particles of a piezoelectric material with deep trapping centers on the interphase boundaries between the matrix and particles of a piezoelectric material. The piezoelectric material may have a tetragonal or a rhombohedral structure, and the polymer matrix material may be selected from high-density polyethylene, polyvinylidene fluoride, and a copolymer of vinylidenechloride and tetrafluoroethylene. The composite has a potential difference>500V, lifespan>10 years, dielectric permeability 20, specific electric resistance 1014 Ohm·m; provision of deep trapping centers on the interphase boundaries with activation energy in the range of 1 to 1.25 eV, and stable electret charge.