Investigate of Electrical Conductivity of Shape-Memory Polymer Filled with Carbon Black

Abstract

A new system of thermoset styrene-based shape-memory polymer (SMP) filled with carbon black (CB) is investigated. To realize the electroactive stimuli of SMP, the electrical conductivity of SMP filled with various amounts of CB is characterized. The percolation threshold of electrically conductive SMP filled with CB is about 3% (volume fraction of CB), which is much lower than many other electrically conductive polymers. When applying a voltage of 30V, the shape recovery process of SMP/CB(10 vol%) can be realized in about 100s. In addition, the thermomechanical properties are also characterized by differential scanning calorimetery (DSC).

Shape memory characteristics of woven glass fibre fabric reinforced epoxy composite in flexure

“…0 recovered shape. The ability of recovering the original shape can be computed by equation (2), where R r is the shape recovery ratio, " m the required temporary shape, " p the recovered shape, " 0 the original shape. Speed of the recovery is characterised by the recovery rate (jd"/dtj, %/min, where t is the time) measured in step IV/B…”

“…Primarily, the external stimulus is the temperature increment, which can be triggered by both direct and indirect (i.e. by applying electric current, 2 magnetic field 3 and infrared light 4 ) heating. The shape memory effect is induced, when the SMP reaches a critical temperature, called transformation temperature ( T trans ).…”

Effect of Carbon Fiber Loading in Mechanical Properties and Electrical Conductivity of Polyvinyl Alcohol Based Composites

“…Therefore, addition of carbon fiber could improve mechanical characteristic and electrical conductivity of composite materials. Increases of electrical conductivity of PVA composites lead to wider applications …”

Design of electrically conducting polymer hybrid composites based on polyvinyl chloride and polyethylene

“…This type of fillers has a number of advantages: high electrical conductivity [9], relatively low density [10], ease of processing [11], etc. The most commonly used are carbon black [12], graphite [13], carbon fiber [14], carbon nanotubes [15]. Each of them has its own characteristics.…”