Electrothermal Shape Memory Behavior and Recovery Force of Four-dimensional Printed Continuous Carbon Fiber/Polylactic Acid Composite

2021 ◽  
Author(s):  
Haijia Chen ◽  
Fenghua Zhang ◽  
Ya Sun ◽  
Baozhong Sun ◽  
Bohong Gu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Shape Memory ◽  
Polylactic Acid ◽  
Shape Memory Behavior ◽  
Continuous Carbon Fiber

Mechanical and Shape Memory Behavior of Shape Memory Polymer/Carbon Fiber Composite Materials

2015 ◽  
Vol 813 ◽  
pp. 250-257 ◽  
Author(s):  
Zhen Qing Wang ◽  
Jian Ming Guo ◽  
Xiao Jun Tang ◽  
Lu Zhang ◽  
Wen Yan Liang
Keyword(s):  
Carbon Fiber ◽  
Shape Memory ◽  
Average Length ◽  
Fiber Composite ◽  
Shape Memory Polymers ◽  
Weight Fraction ◽  
Shipping Industry ◽  
Short Carbon Fiber ◽  
Shape Memory Behavior ◽  
Short Carbon

Shape memory polymers (SMPs) have drawn wide attention of many researchers for its potential applications to shipping industry, aerospace, bionics engineering and mechanical engineering. Shape memory polymers composites (SMPCs) have ability to improve the properties and obtain attain new functions of shape memory polymers. In this paper, trans-1, 4-polyisoprene reinforced by carbon fiber is developed to improve the mechanical weakness of trans-1, 4-polyisoprene bulk. Composites with carbon fiber weight fraction of 5%, 10%, and 15% are fabricated by casting samples with an average length of 2 mm. The mechanical property of the trans-1, 4-polyisoprene reinforced by short carbon fiber is evaluated and the effects of short carbon fiber on shape memory behavior are investigated. The results indicate that there is an optimum fiber weight fraction between 5 and 15 wt% where exists an extremely low recovery ratio, re-crystallizing temperatures (Tc) and an extremely high tensile stress.

Carbon Fiber Reinforced Shape Memory Nanocomposites Incorporated With Highly Conductive Carbon Nanopaper for Electro Actuation

2013 ◽  
Author(s):  
Fei Liang ◽  
Jihua Gou ◽  
He Shen ◽  
Yunjun Xu ◽  
Bob Mabbott
Keyword(s):  
Carbon Fiber ◽  
Shape Memory ◽  
Smart Materials ◽  
Shape Memory Polymer ◽  
Flexural Modulus ◽  
Fiber Reinforcement ◽  
High Strength ◽  
Mechanical Analysis ◽  
Carbon Fiber Reinforcement ◽  
Continuous Carbon Fiber

Shape memory polymers (SMPs) are one of the most popular smart materials due to light weight and high elastic deformation capability. In this study, highly conductive carbon nanofibers paper (CNFP) was coated on the surface of SMP as a conductive layer for electro actuation of SMP. To overcome the drawback of low modulus and low strength of shape memory polymer (SMP), continuous carbon fiber reinforcement was also incorporated with SMP by autoclave processing. The dynamic mechanical analysis (DMA) result showed over 600% increase of storage modulus of SMP by introducing carbon fiber reinforcement. Also, the shape recovery time of SMP has been reduced over 150%, while the recovery ratio of SMP has been improved to 99% by incorporating with carbon fiber reinforcement. Additionally, the mechanical property degradation of SMP composites has been investigated after different electro actuation cycles. After 50 actuation cycles, the decrease of flexural modulus of SMP composites is negligible (< 2%), and the ultimate flexural strength of SMP composites only decreased 25%. The SMP composite shows high strength and modulus, and good durability.

Sign in / Sign up

Export Citation Format

Share Document