Piezoelectric polymer transducer and process of manufacturing the same
First Claim
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1. A method of manufacturing a composite piezeoelectric transducer comprising the steps of:
- forming two blades made of a first polymeric sbustance;
forming a solution including a solvent in which a second polymeric substance and carbon are dissolved;
depositing said solution in the form of a thin layer on faces of each one of said two blades;
evaporating the solvent from said two blades after depositing of said solution thereon, thereby causing a superficial dissolution of the substrate blades to take place ensuring the formation of the adhering conductive electrode layer;
pressing said two blades against each other while their respective electrodes engage one another to form an assembly; and
rolling said assembly between two rollers in the presence of an electric field, said rolling step applying a force acting between the two rollers ranging from 40 to 100 tons, said electric field ranging from 10 to 20 kV, asnd the temperature of the two rollers ranging from 50°
C. to 80°
C.
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Abstract
A composite co-laminated piezoelectric transducer with at least one layer of polymeric substance capable of acquiring piezoelectric properties when co-laminated in the presence of an electrical field, the layer being adjacent to a conductive material acting as an electrode. According to the invention the conductive material is a polymeric substance.
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Citations
12 Claims
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1. A method of manufacturing a composite piezeoelectric transducer comprising the steps of:
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forming two blades made of a first polymeric sbustance; forming a solution including a solvent in which a second polymeric substance and carbon are dissolved; depositing said solution in the form of a thin layer on faces of each one of said two blades; evaporating the solvent from said two blades after depositing of said solution thereon, thereby causing a superficial dissolution of the substrate blades to take place ensuring the formation of the adhering conductive electrode layer; pressing said two blades against each other while their respective electrodes engage one another to form an assembly; and rolling said assembly between two rollers in the presence of an electric field, said rolling step applying a force acting between the two rollers ranging from 40 to 100 tons, said electric field ranging from 10 to 20 kV, asnd the temperature of the two rollers ranging from 50°
C. to 80°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of manufacturing a composite piezoelectric transducer comprising the steps of:
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forming a tube of an extruded first polymeric substance; forming a solution including a solvent in which a second polymeric substance and carbon are dissolved; coating an inner surface of said tube with said solution; evaporating the solvent from said tube after said coating step, thereby causing a superficial dissolution of the tube to take place ensuring the formation of an adhering conductive electrode coating; flattening said tube by pressing it between plates of a press; and rolling the flattened tube in the presence of an electric field. - View Dependent Claims (12)
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Specification