Improving the electrical conductivity by forming Ni powder chains in a shape-memory polymer filled with carbon black

Xin Lan; Wei Min Huang; Na Liu; Sy Phee; Jin Song Leng; Shan Yi Du

doi:10.1117/12.776546

15 April 2008 Improving the electrical conductivity by forming Ni powder chains in a shape-memory polymer filled with carbon black

Xin Lan, Wei Min Huang, Na Liu, Sy Phee, Jin Song Leng, Shan Yi Du

Author Affiliations +

Proceedings Volume 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008; 692717 (2008) https://doi.org/10.1117/12.776546
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

We demonstrate a simple approach to significantly reduce the electrical resistivity of thermo-responsive shape-memory polymers (SMPs), so that they can be easily triggered for shape recovery by Joule heating at a low electrical voltage. After adding a small amount of Ni micro particles into a polyurethane SMP filled with carbon black (CB), the electrical resistivity is slightly reduced. However, if these Ni particles are aligned into chains (by applying a low magnetic field on SMP/CB/Ni solution and then drying to fix the conductive chains), the drop of electrical resistivity is significant. This kind of SMP composites is suitable for cyclic operation as only micro/nano particles are used. A sample (40×15×1mm) with 10vol% of CB and 0.5vol% of chained Ni can be heated to 80°C for shape recovery at 30 V (1.2 W) of power. This approach is generic and applicable for producing other conductive polymers.

Citation Download Citation

Xin Lan, Wei Min Huang, Na Liu, Sy Phee, Jin Song Leng, and Shan Yi Du "Improving the electrical conductivity by forming Ni powder chains in a shape-memory polymer filled with carbon black", Proc. SPIE 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008, 692717 (15 April 2008); https://doi.org/10.1117/12.776546

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