# US 9,434,801 B2 · Polymer and polymer actuator comprising the same

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- Number: US 9,434,801 B2
- Document ID: US9434801B2
- Status: Granted
- Kind: B2
- Application number: 14/017,591
- Filed: 2013-09-04
- Published: 2014-01-02
- Granted: 2016-09-06
- Earliest claimed: 2009-02-12
- Assignees: Samsung Electronics Co., Ltd.; Sungkyunkwan University Foundation for Corporate Collaboration
- Applicants: Samsung Electronics Co., Ltd.; Sungkyunkwan University Foundation for Corporate
- Inventors: Seung-Tae Choi; Young-kwan Lee; Ja-Choon Koo; Jong-oh Kwon; Su-jin Park
- Web page: https://patentgrep.com/patent/US9434801B2

## CPC

- C08F 214/22: Vinylidene fluoride
- B32B 15/08: of synthetic resin
- B32B 27/08: of synthetic resin
- B32B 27/26: using curing agents
- B32B 27/28: comprising synthetic resins not wholly covered by any one of the sub-groups {B32B27/30 - B32B27/42}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- H10N 30/857: Macromolecular compositions
- H10N 30/877: {Conductive materials}
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/205: Metallic coating
- B32B 2307/306: Resistant to heat
- B32B 2307/308: Heat stability
- B32B 2307/50: having particular mechanical properties
- B32B 2307/714: Inert, i.e. inert to chemical degradation, corrosion
- B32B 2457/00: Electrical equipment
- Y10T 428/3154: Of fluorinated addition polymer from unsaturated monomers
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.

## Claims

### Claim 1

A polymer actuator comprising:
a first electrode;
a polymer layer, formed on the first electrode, comprising a poly vinylidene fluoride (PVDF)-based terpolymer cross-linked by a cross-linking agent; and
a second electrode formed on the polymer layer,
wherein the cross-linking agent comprises at least one selected from the group consisting of methylenediamine, ethylenediamine, N-isopropyl ethylenediamine, 1,3-phenylenediamine, 1,5-naphthalenediamine, and 2,4,4-trimethyl-1,6-hexanediamine.

### Claim 2 (depends on 1)

The polymer actuator of claim 1, wherein the PVDF-based terpolymer comprises: as a first structural unit, vinylidene fluoride monomer; as a second structural unit, trifluoroethylene or tetrafluoroethylene; and as a third structural unit, vinyl fluoride, perfluoro (methyl vinyl ether), bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoroethylene, or hexafluoropropylene.

### Claim 3 (depends on 1)

The polymer actuator of claim 1, wherein the PVDF-based terpolymer comprises a poly((vinylidene fluoride)-(trifluoroethylene)-(chlorotrifluoroethylene)), or poly((vinylidene fluoride)-(trifluoroethylene)-(chlorofluoroethylene)).

### Claim 4 (depends on 1)

The polymer actuator of claim 1, wherein the content C of the cross-linking agent in the crosslinked terpolymer is about 0<C (weight percent) ≦10 wt. %.

### Claim 5 (depends on 4)

The polymer actuator of claim 4, wherein the content C of the cross-linking agent in the crosslinked terpolymer is about 0<C ≦5 wt. %.

### Claim 6 (depends on 1)

The polymer actuator of claim 1, wherein the first electrode or the second electrode is formed of a metal, a conductive metal oxide, or a conductive polymer.

### Claim 7 (depends on 6)

The polymer actuator of claim 6, wherein the conductive polymer comprises polypyrrole, poly(3,4-ethylenedioxy thiophene, polyaniline, polyacetylene, poly(p-pheneylene), polythiophene, poly(p-phenylene vinylene), or poly(thienylene vinylene).