Malaxit Co.

Azad Agalar Oglu Bayramov

Nuru Arab Oglu Safarov

Mirza Abdul Oglu Kurbanov

Irada Sultanaxmed Gizi Sultanaxmedova

Sevinj Nadir Gizi Musaeva

Farida Nasir Gizi Tatardar

Adil A Mextili

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&#x3e;500V, lifespan&#x3e;10 years, dielectric permeability&#x2267;20, specific electric resistance&#x2267;10Ohm&#xb7;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.

Electret composite with deep trapping centers on the interphase boundary

A hybrid piezoelectric composite comprises a layer of a polymer matrix comprising particles of a PZT group in a micro range of dimensions, which is sandwiched between two layers of a polymer matrix comprising particles of a dielectric material in a nano range of dimensions. The materials of both layers are polarized with electrothermal polarization. The polymer matrices of both component composites may comprise high-density polyethylene, polyvinylidene fluoride, polypropylene, or low-density polyethylene. The dielectric material of the first component nanocomposite may be selected from the group consisting of SiOand BaTiO, and the ceramic particles of the second component are made from a piezoelectric ceramic material of a PZT group having a tetragonal structure.

Hybrid piezoelectric composites with high electromechanical characteristics

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Baku, Azerbaijan

Azad Agalar Oglu Bayramov