Polymer actuator

A polymer and actuator technology, applied in piezoelectric devices/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, generators/motors, etc., can solve problems such as low insulation breakdown strength , to achieve the effects of small temperature dependence, excellent flexibility and elongation, and high dielectric breakdown strength

Inactive Publication Date: 2015-09-23
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the use of a high-dielectric solvent improves flexibility and enables driving in a low electric field, there is a problem of low dielectric breakdown strength due to the influence of low-molecular components such as the above-mentioned solvent.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0071] The method for producing the polyurethane elastomer molded article of the present invention can use: a method using a forming die; or when its thickness is small, sandwiching the polyurethane elastomer composition between release-treated films with spacers, and then allowing it to pass through A method of controlling the gap to a nip roll of desired thickness. As for the curing conditions of the molded article described above, it is desirable that the curing temperature is 70 to 150° C., preferably 80 to 130° C. and the curing time is 1 to 24 hours. If the curing temperature of the above molded article is lower than 70° C., the hardenability of the polyurethane elastomer molded article is insufficient. On the other hand, if it is higher than 150°C, a large amount of by-products will be generated. Also, if the curing time of the above molded article is less than 1 hour, the hardenability of the polyurethane elastomer molded article is insufficient. On the other hand, i...

Embodiment 1

[0078] Into the reaction container, 41.4 parts by mass of side chain type reactive siloxane (manufactured by JNC Co., Ltd., "Silaplane FM-DA11", number average molecular weight 1,000, number of functional groups 2) and 41.4 parts by mass of polypropylene glycol ( "Excenol 7001", manufactured by Asahi Glass Co., Ltd., having a number average molecular weight of 6000 and a number of functional groups of 3), was dehydrated under reduced pressure for 1 hour while stirring. Then, the inside of the reaction vessel was replaced with nitrogen. Then, 17.8 parts by mass of toluene diisocyanate (manufactured by Mitsui Chemical Industry Co., Ltd., "T-100", 2,4-body=100) was added to the reaction vessel, and then reacted for 3 hours to synthesize isocyanate-terminated prepolymers.

[0079] Next, 100 parts by mass of the prepolymer was dissolved in 65.0 parts by mass of toluene. Next, 51.4 parts by mass of polypropylene glycol (manufactured by Asahi Glass Co., Ltd., "Excenol 1020", with a...

Embodiment 2

[0082] Except that 18.2 parts by mass of side chain type reactive siloxane (manufactured by JNC Co., Ltd., Silaplane FM-DA11, number average molecular weight 1,000, number of functional groups 2) was used for the polyol mixed solution when preparing the isocyanate-terminated prepolymer , 22.9 parts by mass of polypropylene glycol (manufactured by Asahi Glass Co., Ltd., Excenol 1020, number average molecular weight is 1000, and the number of functional groups is 2) and 41.4 parts by mass of polypropylene glycol (manufactured by Asahi Glass Co., Ltd., Excenol 7001, number average molecular weight is 6000, functional group Except that the number is 3), a polyurethane elastomer membrane actuator was prepared in the same manner as in Example 1.

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Abstract

The present invention provides a polymer actuator which has excellent flexibility, excellent tensibility and high dielectric breakdown strength, while having low temperature dependence of characteristics such as elastic modulus, and which can be driven even by low electric field. The present invention relates to a polymer actuator which is characterized in that: the storage modulus (E'(20°C)) as determined by dynamic viscoelasticity measurement at a frequency of 1 Hz at a temperature of 20°C is 0.5 MPa or less; the ratio of the storage modulus (E'(-20°C)) as determined by dynamic viscoelasticity measurement at a frequency of 1 Hz at a temperature of -20°C relative to the storage modulus (E'(20°C)), namely E'(-20°C)/E'(20°C) is 5.0 or less; and the ratio of the storage modulus (E'(40°C)) as determined by dynamic viscoelasticity measurement at a frequency of 1 Hz at a temperature of 40°C relative to the storage modulus (E'(20°C)), namely E'(40°C)/E'(20°C) is 0.5 or more.

Description

technical field [0001] The present invention relates to a polymer actuator which is excellent in flexibility and elongation, has small temperature dependence of characteristics such as elastic modulus, and has high dielectric breakdown strength, and which can be driven even in a low electric field. Background technique [0002] A polymer actuator formed of a polymer material is characterized by light weight and excellent flexibility compared to an actuator formed of materials such as ceramics and metal. Due to these characteristics, polymer actuators can be used as sensors, optical switches, diaphragms, Braille displays, power generation applications (such as wave power generation and heel power generation, etc.), industrial and nursing robots, medical devices, etc., and even Actuators that can operate safely even in direct contact with human skin have received great attention. So far, as polymer actuators, various polymer actuators such as ion exchange membranes, conductiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/193C08G18/61H01L41/09H02N11/00
CPCC08G18/61H01L41/193H10N30/857
Inventor 福田武司伊藤彩安西弘行罗志伟
Owner TOYO TIRE & RUBBER CO LTD
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