Evolution of dispersion of carbon nanotubes in Polyamide 11 matrix composites as determined by DC conductivity

被引：19

作者：

Carponcin, Delphine ^{[1
]}

Dantras, Eric ^{[1
]}

Aridon, Gwenaelle ^{[2
]}

Levallois, Franck ^{[2
]}

Cadiergues, Laurent ^{[3
]}

Lacabanne, Colette ^{[1
]}

机构：

[1] Univ Toulouse 3, CIRIMAT, F-31062 Toulouse, France

[2] EADS Astrium Satellites, F-31401 Toulouse, France

[3] Ctr Natl Etud Spatiales, F-31401 Toulouse, France

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2012年 / 72卷 / 04期

关键词：

Carbon nanotubes; Polymer-matrix composites (PMCs); Electrical properties; Extrusion; ELECTRICAL-CONDUCTIVITY; MECHANICAL-PROPERTIES; EPOXY RESIN; POLYMER; NANOCOMPOSITES; PERCOLATION; MORPHOLOGY; RHEOLOGY; CATALYST; BLACK;

D O I：

10.1016/j.compscitech.2011.12.012

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Double-walled Carbon NanoTubes (DWCNTs) have been dispersed in a Polyamide 11 (PA11) matrix by two routes: in the solvent way, Polyamide 11 was first dissolved in its solvent to ensure a liquid state dispersion of carbon nanotubes by ultrasonic way; in the melt mixing way, an optimization of the extrusion parameters, such as mixing time, mixing speed, mixing temperature and screw rotation direction allow to reach satisfactory dispersion. Dispersion and percolation threshold have been compared thanks to the evolution of DC conductivity with carbon nanotubes weight fraction in Polyamide 11. An electrical percolation threshold of 1% in weight was found by the solvent way while the melt mixing way offers one of the lower percolation thresholds for a semi-crystalline matrix (0.93% in weight). An interpretation of the limitation of the electrical percolation threshold value in a semi-crystalline matrix will be proposed. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：515 / 520

页数：6

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