Multi-walled carbon nanotubes as secondary fibre fillers for property improvement of short carbon fibre-reinforced silicone rubber

Bulletin of Materials Science

H Y DUAN^1¹  P LI^1,2² 

[1]Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China^2

[2]Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China^1

关键词: Multi-walled carbon nanotubes;    silicone rubber;    carbon fibres;    mechanical properties;    thermal properties.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

To improve the properties of room temperature vulcanized (RTV) silicone rubber, functional multi-walled carbon nanotubes (MWCNTs) and short carbon fibres were added into the RTV silicone rubber as hybrid fibre fillers. Thefunctionalized MWCNTs were characterized by transmission electron microscopy and X-ray photoelectron spectroscopy. The mechanical, thermal and ablative properties of the fabricated RTV silicone rubber composites were investigated. Their properties were enhanced by adding the functionalized MWCNTs with appropriate contents. The tensile strength and tear strength of the composites are improved from 4.0 MPa and 20.3 kN m$^{−1}$ to 4.3 MPa and 21.3 kN m$^{−1}, respectively, when the MWCNT content increased from 0 to 0.5 phr. In addition, the decomposition temperatures at the onset point and 50%mass loss increased from 493.4 and 564.4$^{\circ}$C to 498.8 and 612.4$^{\circ}$C, respectively. The mass and line ablation rates alsodecreased from 0.062 g s$^{−1}$ and 0.148 mm s$^{−1}$ to 0.059 g s$^{−1}$ and 0.145 mm s$^{−1}$, respectively.

【 授权许可】

CC BY