二维码（扫一下试试看！） | | 基于超弹性PDMS的摩擦纳米发电机的性能研究 | | Performance of Triboelectric Nanogenerators Based on Hyperelastic Polydimethylsiloxane | | 投稿时间：2018-10-12 | | DOI：10.15918/j.tbit1001-0645.2018.394 | | 中文关键词:超弹性本构聚二甲基硅氧烷(PDMS)接触变形静电感应摩擦纳米发电机 | | English Keywords:hyperelastic constitutive relationpolydimethylsiloxane(PDMS)contact deformationelectrostatic inductiontriboelectric nanogenerators | | 基金项目:国家自然科学基金资助项目（51735001,11472046） | | | 摘要点击次数:988 | | 全文下载次数:452 | | 中文摘要: | | 常用于摩擦纳米发电机的聚二甲基硅氧烷是一种超弹性聚合物，但迄今对其理论分析均采用线弹性本构假设，没有通过实验证明其是否有效.首先基于超弹性本构对PDMS摩擦纳米发电机的接触力学和静电感应性能进行仿真；其次通过光刻和复型工艺制备了PDMS金字塔织构，构建了摩擦纳米发电机实验装置，并将实验与理论结果对比.研究表明：随着施加压力增大，摩擦纳米发电机的接触面积和开路电压均随之增加，之后趋于稳定；相比于超弹性本构，采用线弹性本构高估了金属与PDMS的接触面积，低估了使摩擦纳米发电机开路电压稳定所需施加的压力；采用超弹性PDMS本构的仿真结果与实验更为吻合. | | English Summary: | | Polydimethylsiloxane (PDMS), which is often used in triboelectric nanogenerators, is a kind of hyperelastic polymer. However, the theoretical analysis of PDMS has made use of the linear elastic constitutive assumption in so far, and its effectiveness has not been proved by experiments. Firstly, the contact mechanics and electrostatic induction performance of PDMS triboelectric nanogenerators were simulated based on the hyperelastic constitutive equation. Secondly, PDMS pyramid texture was prepared by photolithography and replica technique. Finally, the test rig for triboelectric nanogenerators was constructed, and the experimental and theoretical results were compared. The results show that the contact area and open-circuit voltage of triboelectric nanogenerators increase with the increase of applied pressure first and then tend to be stable. Compared with the hyperelastic constitutive relation, the linear elastic constitutive relation overestimates the contact area between the metal and PDMS, and therefore underestimates the pressure required to stabilize the open-circuit voltage of triboelectric nanogenerators. The simulation results based on the hyperelastic PDMS constitutive relation are more consistent with the experimental results. | | 查看全文查看/发表评论下载PDF阅读器 | |
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