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  • 您现在的位置:首页> 外文会议>Conference on Active Materials: Behavior and Mechanics; 20060227-0302; San Diego,CA(US) >亿博帐号注册详情

    【24h】Large electromechanical response of a silicone elastomer containing PPV

    机译含有PPV的有机硅弹性体的大机电响应

    【摘要】Electrorheological properties of PDMS gel and PPV/PDMS blend were investigated experimentally under an oscillatory shear mode at the temperature of 27 ℃ to determine the effects of crosslink ratio, electric field strength and doping level. For the pure PDMS gels, the storage modulus, G', increases with increasing crosslinking ratio and electric field at all frequencies between 0.1-100 rad/s. As an electric field is applied, the polymer molecules become polarized resulting in the interaction through the electrostatic force between the polarized PDMS molecules. The PDMS gel system with the crosslinking ratio of 0.01 possesses the highest G sensitivity to electric field. For the PPV/PDMS blends (PPV/PDMS_10), the dynamic moduli, G' and G", are higher than those of pure PDMS in the absence of electric field because PPV particles act as a filler in PDMS matrix. The G' sensitivity of PDMS increases up to 35 % at the electric filed strength of 2 kV/mm. Moreover, the doped PPV/PDMS blend (doped PPV (1:10)/PDMS_10) shows the highest G' sensitivity (170 %) due to interacting electrostatic forces between electric field induced dipole moments of the conductive molecules.

    【摘要机译】实验研究了PDMS凝胶和PPV / PDMS共混物在27℃的振荡剪切模式下的电流变特性,以确定交联比,电场强度和掺杂水平的影响。对于纯PDMS凝胶,在0.1-100 rad / s之间的所有频率下,储能模量G'随着交联比和电场的增加而增加。当施加电场时,聚合物分子被极化,从而导致极化的PDMS分子之间通过静电力相互作用。交联比为0.01的PDMS凝胶体系对电场的G敏感性最高。对于PPV / PDMS共混物(PPV / PDMS_10),在没有电场的情况下,其动态模量G'和G“高于纯PDMS,因为PPV颗粒充当PDMS基质中的填料。G'灵敏度在2 kV / mm的电场强度下,PDMS的结合力增加了35%,此外,掺杂的PPV / PDMS共混物(掺杂的PPV(1:10)/ PDMS_10)由于相互作用而显示出最高的G'敏感度(170%)电场之间的静电力会引起导电分子的偶极矩。

    【作者】Sumonman Naimlang;Anuvat Sirivat;

    【作者单位】The Petroleum Petrochemical College, Chulalongkorn University, Bangkok 10330, Thail;

    【年(卷),期】2006(),

    【年度】2006

    【页码】P.617021.1-617021.7

    【总页数】7

    【原文格式】PDF

    【正文语种】eng

    【中图分类】TB30;

    【关键词】electrorheological properties;PDMS;PPV;

    机译 电流变性能; PDMS; PPV;
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