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Author

Wang Yunli

Bio: Wang Yunli is an academic researcher. The author has contributed to research in topics: Piezoelectricity & Texture (crystalline). The author has an hindex of 1, co-authored 1 publications receiving 2 citations.

Papers
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Patent
11 May 2016
TL;DR: In this paper, a texture piezoelectric polymer film of high transverse effect and a preparation method of the film is presented. But the texture is not textured.
Abstract: The invention discloses a texture piezoelectric polymer film of high transverse effect and a preparation method of the film. The nonisothermal crystallisation process of the film prepared by the solution method is controlled to realize preferable orientation of molecular dipole moment of the film is realized, and the piezoelectric polymer film of the texture structure in which the molecular dipoles are arranged preferably along the plane of the film is prepared. The piezoelectric polymer film is characterized in that the horizontal piezoelectric effect of the film is higher than that of a film of the same components but without texturizing, can be applied to preparation of a sensor of high transverse piezoelectric effect, and has good application prospects in the fields of a flexible nano generation system and a novel energy collection system.

2 citations


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Patent
27 Sep 2019
TL;DR: In this article, a polymer film and a preparation method for the preparation of a polyvinylidene fluoride copolymer solution was described, which has excellent ferroelectric property and piezoelectric property.
Abstract: The invention discloses a polymer film and a preparation method thereof. The preparation method comprises the following steps: (1) adhering an oriented polyvinylidene fluoride film to a substrate to obtain an initial film; (2) applying a vinylidene fluoride-trifluoroethylene copolymer solution on the initial film to obtain a pretreated film; (3) performing annealing treatment on the pretreated film at 100-180 DEG C to obtain the polymer film. The polymer film prepared by the invention has excellent ferroelectric property and piezoelectric property.
Patent
05 Jul 2019
TL;DR: In this paper, a preparation method of an oriented growth vinylidene fluoride-trifluoroethylene copolymer (P(VDF-TrFE)) film is described.
Abstract: The invention discloses a preparation method of an oriented growth vinylidene fluoride-trifluoroethylene copolymer (P(VDF-TrFE)) film. The preparation method comprises the steps that P(VDF-TrFE) powder is evenly dissolved in a tetrahydrofuran organic solvent by taking special graphene/copper as a substrate, the substrate is spin-coated with an appropriate amount of a solution, and lastly vacuum drying and annealing treatment is conducted. According to the preparation method, the technology is simple, the effect is significant, the orientation performance of the prepared P(VDF-TrFE) film is very good, and the preparation method has a wide application prospect in the fields of flexible transducers, infrared detectors, sensors, information storage and the like.