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Related Experiment Video

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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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Electrically Responsive Shape Memory Composites Using Silver Plated Chopped Carbon Fiber.

Yongkun Wang1, Zhenhong Chen2, Jiahao Niu1

  • 1Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi'an, China.

Frontiers in Chemistry
|May 28, 2020
PubMed
Summary
This summary is machine-generated.

Silver-plated chopped carbon fibers enhance electroactive shape memory polymer composites. These Ag/CCF/H-EP composites exhibit significantly improved electrical and thermal conductivity, leading to over 92% shape recovery rate.

Keywords:
electrical conductivityelectroactive shape memory behaviorhydro-epoxysilver plated chopped carbon fiberthermal conductivity

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Area of Science:

  • Materials Science
  • Polymer Science
  • Nanotechnology

Background:

  • Electroactive shape memory polymer composites require high electrical and thermal conductivity for optimal shape recovery.
  • Traditional composites often lack sufficient conductivity for advanced applications.

Purpose of the Study:

  • To fabricate electro-induced shape memory polymer composites with enhanced conductivity and shape recovery performance.
  • To investigate the effect of silver-plated chopped carbon fiber (Ag/CCF) on the properties of hydrogenated bisphenol A epoxy (H-EP) resin.

Main Methods:

  • Processing chopped carbon fiber (CCF) into silver-plated chopped carbon fiber (Ag/CCF).
  • Incorporating Ag/CCF into H-EP resin to create Ag/CCF/H-EP composites.
  • Evaluating electrical conductivity, thermal conductivity, mechanical properties, and shape recovery performance.

Main Results:

  • Ag/CCF/H-EP composites demonstrated superior electrical and thermal conductivity compared to CCF/H-EP composites.
  • A threshold for conductivity and percolation was reached at 1.8 wt% Ag/CCF.
  • Composites with 5.4 wt% Ag/CCF showed a thermal conductivity of 2.33 W/(m·K).
  • Significant reduction in volume and surface resistivity was observed with increasing Ag/CCF content.
  • Excellent electroactive shape memory performance with a shape recovery rate exceeding 92% was achieved for Ag/CCF content above 1.8 wt%.

Conclusions:

  • Silver plating of CCF is an effective strategy to enhance the conductivity of epoxy-based shape memory polymer composites.
  • The developed Ag/CCF/H-EP composites show promising potential for applications requiring efficient electroactive shape memory behavior.