A kind of preparation method of shear piezoelectric fiber composite material

A piezoelectric fiber, composite material technology, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, material selection for piezoelectric devices or electrostrictive devices, device material selection, etc., can solve difficult practical applications and other problems, to achieve the effect of clear piezoelectric fibers, good electrical properties, and strong practicability
CN107910434BActive Publication Date: 2019-12-13CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2019-12-13

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Abstract

The invention discloses a preparation method of a shearing piezoelectric fiber composite material, which comprises the following steps: cutting one side of a lead zirconate titanate piezoelectric ceramic sheet polarized along the thickness direction to form uniformly arranged piezoelectric fibers; The epoxy resin is filled in the fiber gap and cured to obtain a piezoelectric fiber filled with epoxy resin; the lead zirconate titanate piezoelectric ceramic sheet is thinned on the side opposite to the cut surface to obtain a lead zirconate titanate piezoelectric ceramic- Epoxy resin composite layer; on the upper and lower sides of the lead zirconate titanate piezoelectric ceramic-epoxy resin composite layer, epoxy resin is used to composite flexible interdigitated electrodes, and the flexible interdigitated electrodes on the upper and lower sides are mirror-symmetrical, and the flexible interdigitated electrodes The fingers of the shaped electrode are parallel to the piezoelectric fiber; the epoxy resin is cured to obtain the obtained product. The method has simple process, and the obtained piezoelectric fiber composite material has good integrity, clear piezoelectric fibers, certain flexibility, resistance to bending deformation, and good electrical performance, strain performance and driving performance.
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Description

technical field

[0001] The invention relates to the technical field of piezoelectric materials, in particular to a preparation method of a shear-type piezoelectric fiber composite material. Background technique

[0002] Piezoelectric ceramics widely used at present and including d 33 Piezoelectric ceramic composite materials, including piezoelectric fiber composite materials, are based on the axial piezoelectric effect of piezoelectric ceramics, that is, the direction of the driving electric field acting on piezoelectric ceramics is parallel to the polarization direction of ceramics, and piezoelectric ceramics generate along the Polarization direction (d 33 ) or perpendicular to the polarization direction (d 31 ) deformation, such as Figure 21 shown. In addition to the axial piezoelectric effect, including PZT (piezoelectric ceramic transducer, lead zirconate titanate piezoelectric ceramics), BaTiO 3 Piezoelectric ceramic materials such as Piezoelectric ceramics also ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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