Method for producing controllable microhole structural piezoelectric functional film

A technology of microporous structure and functional film, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., can solve the problem of inability to prepare piezoelectric electrets , high thermal stability electret to form closed microporous structure and other problems, to achieve the effect of novel concept, high thermal stability, and improved thermal stability
CN1933206AInactive Publication Date: 2007-03-21TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGJI UNIV
Publication Date
2007-03-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to a preparation method for controllable micro-hole structure piezoelectric function films including the preparation of the controllable micro-hole structure polymer compound film and charging to the film, which overlaps the polymer densified films with high stable heat and polymer mesh films of different smelt temperatures alternately then processes them for a period of time to get the polymer compound film to be charged by a corona method, contact method or electronic beam method to get the piezoelectric function film.
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Description

technical field

[0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of a piezoelectric functional film with a controllable microporous structure. technical background

[0002] Films with closed microporous structures based on organic electret materials can exhibit outstanding piezoelectric activity after proper electrical polarization treatment. This material has the characteristics of both piezoelectric materials and electrets, and is named piezoelectric electret or ferroelectric electret. It is a new type of piezoelectric functional material developed around 1990. Piezoelectric coefficient d of piezoelectric electret 33 It is more than 20 times higher than that of ferroelectric polymer PVDF; compared with piezoelectric ceramic materials, piezoelectric electret has a higher piezoelectric coefficient d 33 In addition, it also has outstanding properties such as the flexibility of polymers, large-area...

Claims

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