Abstract
Magnetically responsive fluid based on polymers of natural rubber (NR-latex) involves a magnetic compound fluid (MCF) rubber liquid. For a wide range of engineering applications of suspensions or liquids with particles, their electrical characteristics of fluidic suspensions are investigated to obtain useful results that might be important in the study of devices, such as fluidic sensors and capacitors. The author of the present paper proposes that MCF rubber liquid can be produced by combining MCF and rubber latex. The influence of the aggregation of magnetic particles and rubber molecules on electrical characteristics under a magnetic field was investigated by measuring electrical properties under an applied voltage. The electrical characteristics change with a linear or a nonlinear response, based on conditions of particle aggregation. The capacity of the electric charge also changes with the conditions of particle aggregation. These results show that MCF rubber liquid is a novel hybrid capacitor.
Highlights
The utilization of the behavior and structure of particles dispersed in a polymer or colloidal suspension to enhance and control electric conductivity by magnetic and electric fields has attracted increasing attention
The magnetic compound fluid (MCF) rubber liquid is feasible for both rechargeable batteries and electric double-layer capacitors, and the difference can be realized by applying a magnetic field
In the area of dense aggregation, the capacity of the electric charge increases regardless whether the dense aggregation was created by sedimentation without a magnet or by agglomeration with a magnet
Summary
The utilization of the behavior and structure of particles dispersed in a polymer or colloidal suspension to enhance and control electric conductivity by magnetic and electric fields has attracted increasing attention. This property is required in many engineering applications such as sensors, capacitors [1], polishing [2], and conductive adhesives. Electrical properties are relevant to the applicability of conductive polymer composites for liquid sensing [10], insulators, conductive adhesives, and conductors [11,12]. In addition to the abovementioned suspensions, fluids, and composites, the utilization of ionic liquids to maintain magnetic response has been reported [13]
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