文献类型：期刊文献

英文题名：Incorporation of liquid fillers into silicone foams to enhance the electro-mechanical properties

作者：Liu, Min[1];Yu, Liyun[2];Vudayagiri, Sindhu[2];Skov, Anne Ladegaard[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China;[2]Tech Univ Denmark, Danish Polymer Ctr, Dept Chem & Biochem Engn, Soltofts Plads Bldg 227,Room 122, DK-2800 Lyngby, Denmark

年份：2020

卷号：11

期号：1

起止页码：11

外文期刊名：INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS

收录：;EI(收录号：20200708184760);WOS:【SCI-EXPANDED(收录号:WOS:000513468000001)】；

基金：This work was supported by the China Scholarship Council; Teknologi og Produktion, Det Frie Forskningsrad

语种：英文

外文关键词：Silicone foams; electro-mechanical; capacitive pressure sensors; glycerol; silicone oil; chloropropyl-functional silicone oil

摘要：Silicone foams with and without liquid fillers (silicone oils of various types and glycerol, respectively) are synthesized and analyzed to be used as dielectric layers in capacitive sensors. A simple fabrication technique involving only four components i.e. Sylgard 184, glycerol, sodium hydroxide and ethanol is used to make these silicone foams after which they are filled with silicone oil or glycerol by soaking the foam in respective liquid. Mechanical and dielectric properties of the foams are examined. The oil reinforces the foam's dielectric properties, softens the foam and improves its capacitive response, making it a very good dielectric material for fabricating capacitive pressure sensors. Compared to dry silicone foams, foams filled with - and swollen by - chloropropyl-functional silicone oil, show a low Young's modulus (31 kPa), a high and stable relative dielectric permittivity of around 5, and a high capacitive response of 132% for an applied pressure of 12 kPa. The presence of oil stabilizes the soft foam and ensures that it does not buckle under high pressure. [GRAPHICS] .