Influence of small scale melt mixing conditions on electrical resistivity of carbon nanotube-polyamide composites

被引：199

作者：

Krause, Beate ^{[1
]}

Poetschke, Petra ^{[1
]}

Haeussler, Liane ^{[1
]}

机构：

[1] Leibniz Inst Polymer Res Dresden IPF, D-01069 Dresden, Germany

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 10期

关键词：

Carbon nanotubes; Polymer-matrix composites; electrical properties; Thermal properties; Percolation; MECHANICAL-PROPERTIES; POLYCARBONATE; DISPERSION; CRYSTALLIZATION; BEHAVIOR; STATE;

D O I：

10.1016/j.compscitech.2008.07.007

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Polyamide 6 (PA6) and polyamide 6.6 (PA66) were filled with multiwalled carbon nanotubes (MWNT) using small scale melt mixing under variation of processing conditions, including temperature, rotation speed, and mixing time. In PA66 an electrical percolation threshold of 1 wt% MWNT was found which is lower than that of PA6 at 2.5-4 wt%. In both cases mixing conditions influenced strongly the dispersion and distribution of CNT and the electrical volume resistivity, whereas crystallisation behaviour was only slightly changed. With increasing mixing energy input remaining agglomerates were less in number and smaller, leading to better dispersion. On the other hand, in samples containing 5 wt% MWNT in PA6 electrical volume resistivity showed a minimum at a quite low energy input and then increased considerably with further input of mixing energy. This increase may be related to MWNT breaking during mixing and encapsulation of MWNT by the polyamide chains. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1505 / 1515

页数：11

共 43 条

[1]

Andrews R, 2002, MACROMOL MATER ENG, V287, P395, DOI 10.1002/1439-2054(20020601)287:6<395::AID-MAME395>3.0.CO

[2]

2-S

[3] Noncovalent and nonspecific molecular interactions of polymers with multiwalled carbon nanotubes [J].

Baskaran, D ;

Mays, JW ;

Bratcher, MS .

CHEMISTRY OF MATERIALS, 2005, 17 (13) :3389-3397

[4] Distribution and alignment of carbon nanotubes and nanofibrils in a polymer matrix [J].

Cooper, CA ;

Ravich, D ;

Lips, D ;

Mayer, J ;

Wagner, HD .

COMPOSITES SCIENCE AND TECHNOLOGY, 2002, 62 (7-8) :1105-1112

[5]

DIJKSTRA DJ, 2008, PPS 24 C P, pS7

[6]

Ehrenstein G.W., 1998, Praxis der Thermischen Analyse von Kunststoffen

[7]

Ferguson D.W., 1998, ANTEC 98, P1219

[8] Monte Carlo simulation of polymer wrapping of nanotubes [J].

Gurevitch, Inna ;

Srebnik, Simcha .

CHEMICAL PHYSICS LETTERS, 2007, 444 (1-3) :96-100

[9]

HAGERSTROM JR, 2000, COMMERCIALIZATION NA

[10] Dispersion of carbon nanotubes in liquids [J].

Hilding, J ;

Grulke, EA ;

Zhang, ZG ;

Lockwood, F .

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2003, 24 (01) :1-41

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