材料科学
复合材料
弹性体
表面改性
炭黑
压电
聚偏氟乙烯
硅烷
胶粘剂
粘附
电池(电)
电极
X射线光电子能谱
聚合物
图层(电子)
天然橡胶
化学工程
功率(物理)
化学
物理
物理化学
量子力学
工程类
作者
Carmela Mangone,Wisut Kaewsakul,Michel Klein Gunnewiek,Louis A.E.M. Reuvekamp,Jacobus W.M. Noordermeer,Anke Blume
标识
DOI:10.1088/1361-665x/ac8211
摘要
Abstract A piezoelectric energy harvester for battery-less tyre sensors has been developed. It consists of two key elements: (a) a piezoelectric material—polyvinylidene difluoride (PVDF) film and (b) an electrode—a conductive elastomer filled with carbon black and single-wall carbon nanotubes (SWCNTs). It was designed as a flexible patch in a sandwich-like configuration, which can be mounted onto the inner liner of a tyre. The patch was fabricated by inserting a PVDF film in between two conductive elastomer sheets. The development started with improving the conductivity of the elastomer by adding 6 wt% of SWCNT masterbatch. The adhesion between the interfaces was improved through surface modification of the PVDF film by introducing oxygen functional groups via a plasma treatment and further modification with a thiocyanate silane. The successful surface modification of the PVDF film was affirmed by x-ray photoelectron spectroscopy. T-peel and fatigue tests showed durable and stable adhesion between PVDF and conductive elastomer, confirming that the silane can effectively bridge the two components. A glueing method is proposed to adhere the patch to the tyre inner liner compound. The harvester is estimated to sufficiently power a reference tyre sensor, producing 28 μ W cm −2 .
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