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首页> 外文期刊>Journal of Applied Polymer Science >Lead magnesium niobate-filled silicone dielectric elastomer with large actuated strain
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Lead magnesium niobate-filled silicone dielectric elastomer with large actuated strain

机译：铅应变填充的铌酸镁硅有机电介质弹性体

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摘要

A silicone dielectric elastomer filled with lead magnesium niobate with a maximum actuated strain of 7.4% at 45 kV/mm was fabricated by optimizing the amount of dielectric filler, amount of plasticizing agent, and crosslink density of the elastomer. The actuated strain of dielectric elastomers (DEs) is determined by both the dielectric constant and the elastic modulus. Although the dielectric constant of the silicone elastomer increased with increasing loading amount of lead magnesium niobate, actuated strain did not increase as expected because the elastic modulus increased at the same time. The elastic modulus of silicone dielectric elastomer was decreased by reducing the crosslink density or adding plasticizing agent, leading to a visible increase in actuated strain. It was also revealed that actuated strain of silicone dielectric elastomer always goes up with increasing ratio of dielectric constant to elastic modulus.
机译：通过优化介电填料的量，增塑剂的量和弹性体的交联密度，制造出填充了铌酸铅镁的有机硅介电弹性体，在45 kV / mm时最大激活应变为7.4％。介电弹性体（DEs）的驱动应变由介电常数和弹性模量决定。尽管有机硅弹性体的介电常数随铌酸铅镁的负载量的增加而增加，但由于弹性模量同时增加，致动应变并未如预期的那样增加。通过降低交联密度或添加增塑剂，可降低有机硅介电弹性体的弹性模量，从而导致驱动应变明显增加。还揭示出，硅树脂介电弹性体的致动应变总是随着介电常数与弹性模量的比率的增加而增加。

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