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首页> 外文期刊>Journal of materials science >Electromechanical response of polyol-polyurethane blends as dielectric elastomer flexible mirco-actuator material
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Electromechanical response of polyol-polyurethane blends as dielectric elastomer flexible mirco-actuator material

机译：多元醇-聚氨酯共混物作为介电弹性体柔性微致动器材料的机电响应

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摘要

A simple, cheap, all-organic process for the fabrication of polyurethane (PU) composites for dielectric elastomer actuators was presented in this paper. This study focused on improving the electromechanical properties of PU matrix with polyol small organic molecule as filler. The dielectric, tensile mechanical, dynamic thermal mechanical, creep, and electric field induced strain properties of a series of polyol-PU blends were described in detail. It was found that the dielectric constant of PU at low frequencies (40-100 Hz) remarkably increased with the addition of polyols and the tensile strength of the PU/polyol blends decreased obviously with an increase in the content of polyol. The polyol-PU all organic composites had better electromechanical response than the pristine PU. Among the PU/ glycerol, PU/ethylene glycol, and PU/triethylene glycol blends, PU/glycerol-50% had relatively high dielectric constant of 32.71 (40 Hz), low tensile strength of 16.37 MPa, low loss modulus of 164.24 MPa (-40 ℃), high compliance of 9.709 × 10~(-5) 1/Pa, and high electric field induced strain of 49.7 (37.4 MV/m). The enhancement of the electric field induced strain was mainly triggered by an increase of the dielectric constant and a decrease of the elastic modulus.
机译：本文提出了一种简单，便宜，全有机的方法来制造用于介电弹性体致动器的聚氨酯（PU）复合材料。这项研究的重点是使用多元醇小有机分子作为填料改善PU基体的机电性能。详细描述了一系列多元醇-PU共混物的介电，拉伸力学，动态热力学，蠕变和电场诱发的应变特性。发现在低频（40-100Hz）下，PU的介电常数随着多元醇的添加而显着增加，并且PU /多元醇共混物的拉伸强度随着多元醇含量的增加而明显降低。多元醇-PU全有机复合材料比原始PU具有更好的机电响应。在PU /甘油，PU /乙二醇和PU /三乙二醇共混物中，PU /甘油50％具有相对较高的介电常数32.71（40 Hz），低拉伸强度16.37 MPa，低损耗模量164.24 MPa（ -40℃），9.709×10〜（-5）1 / Pa的高柔度和49.7（37.4 MV / m）的高电场感应应变。电场感应应变的增加主要是由介电常数的增加和弹性模量的降低引起的。

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  • 来源
    《Journal of materials science》 |2017年第4期|3560-3570|共11页
  • 作者

    Tian Chen; Minchao Lin; Yanzhang Zhao; Lifeng Pan; Qingping Tang;

  • 作者单位

    College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

    College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

    College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

    College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

    College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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