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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >A new kind of electro-active polymer composite composed of silicone elastomer and polyethylene glycol
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A new kind of electro-active polymer composite composed of silicone elastomer and polyethylene glycol

机译：硅弹性体与聚乙二醇组成的新型电活性聚合物复合材料

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摘要

In this work, a new kind of electro-active polymer composite composed of silicone and polyethylene glycol (PEG) was prepared by solution blending. Two types of PEG with average molecular weights of 600(PEG600) and 1500(PEG1500) were first blended with liquid silicone (DC3481) separately. Then, the dielectric, electrical, mechanical and electromechanical properties of pure silicone and the silicone/PEG composites were investigated. The silicone/PEG600 composite shows an increased dielectric constant and a decreased Young's modulus, resulting in an improved figure of merit (FOM) and an actuation strain of 11.5% at 40Vm ~1, which is 64% higher than pure silicone. This indicates that the actuation properties of silicone are largely improved by the addition of PEG600. However, for the silicone/PEG1500 composite, a much higher dielectric constant and an increased modulus due to its semi-crystalline structure are obtained, which lead to a decreased FOM and a smaller actuation strain than that of pure silicone. In addition, a comparison between theoretical strain and the corresponding experiment value was made. And the results indicate that not only the FOM, but the dielectric loss and mechanical loss play an important role in the actuation properties.
机译：在这项工作中，通过溶液共混制备了一种新型的由硅树脂和聚乙二醇（PEG）组成的电活性聚合物复合材料。首先将两种平均分子量分别为600（PEG600）和1500（PEG1500）的PEG与液态有机硅（DC3481）混合。然后，研究了纯有机硅和有机硅/ PEG复合材料的介电，电气，机械和机电性能。有机硅/ PEG600复合材料显示出增加的介电常数和降低的杨氏模量，从而改善了品质因数（FOM），在40Vm〜1时的驱动应变为11.5％，比纯有机硅高64％。这表明通过加入PEG600可以大大改善有机硅的致动性能。然而，对于硅氧烷/ PEG1500复合材料，由于其半结晶结构，获得了更高的介电常数和更高的模量，与纯硅氧烷相比，这导致FOM降低和致动应变减小。另外，比较了理论应变和相应的实验值。结果表明，不仅FOM，介电损耗和机械损耗在致动性能中也起着重要作用。

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