Preparation and properties of polysiloxane grafting multi-walled carbon nanotubes/polycarbonate nanocomposites

被引:15
作者
Wang, Mi [1 ]
Li, Bin [1 ]
Wang, Jing [1 ]
Bai, Peng [1 ]
机构
[1] NE Forestry Univ, Heilongjiang Key Lab Mol Design & Preparat Flame, Coll Sci, Harbin 150040, Peoples R China
关键词
carbon nanotubes; polysiloxane; polycarbonate; composites; NANOTUBE NANOCOMPOSITES; MECHANICAL-PROPERTIES; ELECTRICAL-PROPERTIES; RHEOLOGICAL BEHAVIOR; COMPOSITES; MELT; FUNCTIONALIZATION; PURIFICATION; ENHANCEMENT; DISPERSION;
D O I
10.1002/pat.1665
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Carboxyl multi-wall carbon nanotubes (MWNTs-COOH) were grafted by diaminopropyl terminated dimethylpolysiloxane (DPD) to the modified MWNTs-COOH (MWNTs-DPD). The surface structure and thermal stability of MWNTs-DPD and MWNTs-COOH were characterized using Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). Then PC/MWNTs-COOH and PC/MWNTs-DPD nanocomposites were prepared by the solution method and melt extrusion method. The mechanical properties, transmission electron microscopy (TEM), TGA, limiting oxygen index (LOI), UL-94 test, and permittivity test were used to evaluate the properties of the composites. The results showed that the MWNTs-DPD was dispersed well in the PC matrix, and its tensile strength, flexual strength, flexural modulus, and flame retardancy were better than that of PC/MWNTs-COOH. MWNTs-DPD can improve the electrical properties of the nanocomposites at the low loading in PC. Copyright (C) 2010 John Wiley & Sons, Ltd.
引用
收藏
页码:1738 / 1746
页数:9
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