Application of poly-L-lactic acid fiber material in piezoelectric devices
A poly-L-lactic acid, fiber material technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, fiber processing, electrical components, etc., can solve problems such as complex processing technology
Active Publication Date: 2017-10-24
BEIJING INST OF NANOENERGY & NANOSYST
View PDF2 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] For the traditional PLLA material, after being stretched, it usually only shows the piezoelectric coefficient d in the shear direction 14 , if applied as a piezoelectric material, complex processing techniques are required
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0030] In the present invention, unless stated to the contrary, the used orientation words such as "up and down" refer to directions in the drawings; "inside" refers to the interior of the corresponding structure, and "outside" refers to the exterior of the corresponding structure.
[0031] In recent years, with the in-depth study of nanomaterials, the use of electrospinning to prepare nano-polymer materials has attracted more and more research interest.
[0032] The electrospinning method is a method for making polymer nanofibers and even composite nanofibers with simple operation and easy control of experimental conditions. Figure 4 It is a schematic diagram...
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
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to the piezoelectric material application field and discloses an application of a poly-L-lactic acid fiber material in piezoelectric devices. The poly-L-lactic acid fiber material simultaneously possesses d33 direction piezoelectricity. The poly-L-lactic acid fiber material can be manufactured through an electrostatic spinning method. Poly-L-lactic acid fibers in an electrostatic field are stretched so that poly-L-lactic acid piezoelectric fibers show the d33 direction piezoelectricity for the first time and can be used in piezoelectric devices of a pressure sensor or a piezoelectric nanometer generator and the like. Through the application of the poly-L-lactic acid fiber material in the piezoelectric devices, shortcomings of PVDF which is used as a piezoelectric material can be overcome. The poly-L-lactic acid fiber material only has piezoelectricity and does not have thermoelectricity and ferroelectricity so as to fundamentally solve an interference problem of thermoelectric signals.
Description
technical field [0001] The invention relates to the application field of piezoelectric materials, in particular to the application of a poly-L-lactic acid fiber material in piezoelectric devices. Background technique [0002] The monomer structure of poly-L-lactic acid (Poly-L-lactic acid, PLLA) can be as follows figure 1 As shown, the good biodegradability, good solubility and relatively high piezoelectricity of poly-L-lactic acid (PLLA) have attracted more and more research interest in recent years. PLLA material is a hand letter helical structure, divided into left-handed and right-handed. Generally speaking, when PLLA is initially prepared by the solution casting method, the PLLA nanofibrous material generally exhibits an α phase, and the internal structure of the material is shown as 10 3 spiral structure. When stretched at low temperature, PLLA nanofibers generally exhibit the α' phase. If stretched at high temperature, the PLLA nanofibers show a β phase, and the P...
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/193H01L41/253H01L41/257D01D5/00H10N30/857H10N30/04H10N30/045
CPCD01D5/003H10N30/04H10N30/857H10N30/045
Inventor 任凯亮黄佰生赵更锐
Owner BEIJING INST OF NANOENERGY & NANOSYST