Electrorheological fluids

US6852251B2 · kind B2 · utility

Assignee

• The Hong Kong University of Science and Technology

Inventors

• Ping Sheng · Hong Kong, CN
• Weijia Wen · Hong Kong, CN
• Che Ting Chan · Tsuen Wan, CN
• Weikun Ge · Kowloon, CN
• Shihe Yang · Kowloon, CN

Key dates

• Filing date: Sep 16, 2002
• Grant date: Feb 8, 2005
• Expiry date: Aug 2, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10M171/001
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

There is described an electrorheological fluid comprising particles of a composite material suspended in an electrically insulating hydrophobic liquid. The composite particles are metal salts of the form M1xM22-2xTiO(C2O4)2 where M1 is selected from the group consisting of Ba, Sr and Ca and wherein M2 is selected from the group consisting of Rb, Li, Na and K, and the composite particles further include a promoter selected from the group consisting of urea, butyramide and acetamide.