Reinforcement of epoxy-based composites by magnetically aligned multi walled carbon nanotube

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Xu, Xianjuan^1 ; Lin, Song^2 ; Li, Moyu^3 ; Li, Wusheng^1 ; Jia, Xiaolong^1,4 ; Cai, Qing^1 ; Yang, Xiaoping^1,4

State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing

100029, China^1

Aerospace Research Institute of Materials and Processing Technology, Beijing

100076, China^2

China Petroleum Engineering Co., Ltd., Beijing Company, Beijing

100085, China^3

Changzhou Institute of Advanced Materials, Beijing University of Chemical Technology, Jiangsu

213164, China^4

关键词: Co-precipitation process;    External magnetic field;    Fe3O4 nanoparticles;    Fourier transform infra red (FTIR) spectroscopy;    Magnetic response;    Oxide nanoparticles;    Polymer composite;    Reinforcing effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012088/pdf
DOI  :  10.1088/1757-899X/87/1/012088

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Multi walled carbon nanotubes decorated with ferriferrous oxide nanoparticle (MWCNTs-Fe3O4) complex was used as an effective reinforcement in the polymer composites. The MWCNTs-Fe3O4with various grafting contents of Fe3O4nanoparticles were successfully prepared by combining in situ atom transfer radical polymerization (ATRP) and coprecipitation process, which was characterized with Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscope (TEM). The MWCNTs-Fe3O4complex showed the strong magnetic response behavior, which could be easily aligned in an external magnetic field. The alignment state of MWCNTs-Fe3O4complex could be modulated by adjusting the intensity of external magnetic field, grafting content of Fe3O4nanoparticles and viscosity of the solvent. Moreover, with the addition of MWCNTs-Fe3O4, tensile strength and modulus of epoxy composites were enhanced by 12.3 and 10.9%, respectively, which was due to the reinforcing effect of the aligned MWCNTs-Fe3O4within magnetic field.