Pressure-volume characteristics of dielectric elastomers diaphragms

被引：27

作者：

Tews, AM ^{[1
]}

Pope, KL ^{[1
]}

Snyder, AJ ^{[1
]}

机构：

[1] Penn State Univ, Hershey, PA 17033 USA

来源：

SMART STRUCTURES AND MATERIALS 2003: ELECTROACTIVE POLYMER ACTUATORS AND DEVICES (EAPAD) | 2003年 / 5051卷

关键词：

electroactive polymer; dielectric elastomer; pumps;

D O I：

10.1117/12.484305

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

With the ultimate goal of constructing diaphragm-type pumps, we have measured pressure-volume characteristics of single-layer dielectric elastomers diaphragms. Circular dielectric elastomer diaphragms were prepared by biaxial stretching of 3M VHB 4905 polyacrylate, or spin casting and modest or no biaxial stretching of silicone rubber films, followed by mounting to a sealed chamber having a 3.8 cm diameter opening. Pressure-volume characteristics were measured at voltages that provided field strengths up to 80 MV/m in un-deformed VHB films and 50-75 MV/m in silicone films. The most highly pre-strained VHB diaphragms were found to have linear pressure-volume characteristics whose slopes (diaphragm compliance) depended sensitively upon applied field at higher field strengths. Compliance of unstretched silicone diaphragms was nearly independent of field strength at the fields tested, but pressure-volume characteristics shifted markedly. For both kinds of dielectric elastomers, pressure-volume work loops of significant size can be obtained for certain operating pressures. Each type of diaphragm may have advantages in certain applications.

引用

页码：159 / 169

页数：11

共 3 条

[1]

GOULBOURNE N, 2003, SPIE, V4695

[2] High-speed electrically actuated elastomers with strain greater than 100% [J].