Transducer which uses fibers and uses electric signal as output or input
A technology of transducers and electrical signals, which is applied to transducers of piezoelectric-electric polymers, piezoelectric/electrostrictive transducers, and the measurement of the properties and forces of piezoelectric devices, which can solve the problem of large gaps in flexibility. , lack of flexibility or softness, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0230] (Manufacture of polylactic acid)
[0231] The polylactic acid used in Example 1 was produced by the following method.
[0232]Add 0.005 parts by weight of tin octoate to 100 parts by weight of L-lactide (manufactured by Musashino Chemical Research Institute, optical purity 100%), and react at 180°C with a reactor equipped with stirring blades under a nitrogen atmosphere After 2 hours, 1.2 times the equivalent of phosphoric acid was added to tin octoate, and then the remaining lactide was removed under reduced pressure at 13.3 Pa, and chipped to obtain poly-L-lactic acid (PLLA1). The obtained PLLA1 had a weight average molecular weight of 152,000, a glass transition temperature (Tg) of 55°C, and a melting point of 175°C.
[0233] (piezoelectric fiber)
[0234] PLLA1 melted at 240°C was poured from the 24-well lid at 20 g / min and retrieved at 887 m / min. The unstretched multifilament yarn was stretched at 80° C., 2.3 times, and then heat-fixed at 100° C., thereby obtain...
Embodiment 2
[0243] (Manufacture of polylactic acid)
[0244] The polylactic acid used in Example 2 was produced by the following method.
[0245] Add 0.005 parts by weight of tin octoate to 100 parts by weight of L-lactide (manufactured by Musashino Chemical Research Institute, optical purity 100%), and react at 180°C with a reactor equipped with stirring blades under a nitrogen atmosphere After 2 hours, 1.2 times the equivalent of phosphoric acid was added to tin octoate, and then the remaining lactide was removed under reduced pressure at 13.3 Pa, and poly-L-lactic acid (PLLA1) was obtained by chipping. The obtained PLLA1 had a weight average molecular weight of 152,000, a glass transition temperature (Tg) of 55°C, and a melting point of 175°C.
[0246] (piezoelectric fiber)
[0247] PLLA1 melted at 240°C was poured from the 24-well lid at 20 g / min and retrieved at 887 m / min. The unstretched multifilament yarn was stretched at 80° C., 2.3 times, and then heat-fixed at 100° C., thereb...
Embodiment 3~6
[0254] (Manufacture of polylactic acid)
[0255] Polylactic acid used in Examples 3 to 6 was produced by the following method.
[0256] Add 0.005 parts by weight of tin octoate to 100 parts by weight of L-lactide (manufactured by Musashino Chemical Research Institute, optical purity 100%), and react at 180°C with a reactor equipped with stirring blades under a nitrogen atmosphere After 2 hours, 1.2 times the equivalent of phosphoric acid was added to tin octoate, and then the remaining lactide was removed under reduced pressure at 13.3 Pa, and poly-L-lactic acid (PLLA1) was obtained by chipping. The obtained PLLA1 had a weight average molecular weight of 150,000, a glass transition temperature (Tg) of 55°C, and a melting point of 175°C.
[0257] (Evaluation of Piezoelectric Elements)
[0258] In Examples 3 to 6, piezoelectric elements were evaluated as follows.
[0259] The piezoelectric characteristics were evaluated by applying deformation to the piezoelectric element. e...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| melting point | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More