Citation: Yong-kun Wang, Wen-chao Tian, Guang-ming Zhu, Jian-qiang Xie. Thermomechanical and Shape Memory Properties of SCF/SBS/LLDPE Composites[J]. Chinese Journal of Polymer Science, ;2016, 34(11): 1354-1362. doi: 10.1007/s10118-016-1838-9 shu

Thermomechanical and Shape Memory Properties of SCF/SBS/LLDPE Composites

a.
Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi'an 710071, China
b.
Department of Applied Chemistry, Northwestern Polytehnical University, Xi'an 710129, China
c.
Department of Polymer materials and Engineering, College of Material Science and Engineering, North China University of Science and Technology, Tangshan 063009, China

Corresponding author: Yong-kun Wang, ykwang@xidian.edu.cn
Received Date: 20 April 2016
Revised Date: 12 May 2016
Accepted Date: 19 May 2016

Fund Project: the National Natural Science Foundation of China 51403050Fundamental Research Funds for the Central Universities of China JB150408

A thermally triggered shape memory polymer composite was prepared by blending short carbon fiber (SCF) into a blend of poly(styrene-b-butadiene-b-styrene) triblock copolymer (SBS)/linear low density polyethylene (LLDPE) prior to curing. These composites have excellent processability compared with other thermosets. The dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) were investigated to assess the thermomechanical properties of the SCF/SBS/LLDPE composite. Scanning electron microscope (SEM) imaging of the samples was performed to show the distribution of the SCF in the composite. The study specifically focused on the effect of SCF on the shape memory behavior of the SCF/SBS/LLDPE composite. The results indicated that the large amount of SCF significantly improved the mechanical property of the polymer composites while not damaging the shape memory performance. The SCF/SBS/LLDPE composites exhibited excellent shape memory behavior when the SCF content was less than 15.0 wt%. Moreover, the shape fixity ratio and shape recovery time of the SCF/SBS/LLDPE composites increased with the SCF content.
- Short carbon fiber,
- SCF/SBS/LLDPE composite,
- Mechanical properties,
- Shape memory behavior
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沈阳化工大学材料科学与工程学院沈阳 110142