Advanced elastomer nano-composites based on CNT-hybrid filler systems

被引：152

作者：

Lorenz, H. ^{[1
]}

Fritzsche, J. ^{[1
]}

Das, A. ^{[2
]}

Stoeckelhuber, K. W. ^{[2
]}

Jurk, R. ^{[2
]}

Heinrich, G. ^{[2
]}

Klueppel, M. ^{[1
]}

机构：

[1] Deutsch Inst Kautschuktechnol eV, D-30519 Hannover, Germany

[2] Leibniz Inst Polymerforsch Dresden eV, D-01069 Dresden, Germany

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 13期

关键词：

Carbon nanotubes; Elastomers; Nano-composites; Fatigue crack propagation; Reinforcement; CARBON NANOTUBES; CONDUCTIVITY;

D O I：

10.1016/j.compscitech.2009.05.014

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Different techniques to disperse multiwalled carbon nanotubes (CNT) in elastomers using an internal mixer are applied and physical properties of the composites are evaluated: stress-strain behavior, dynamic-mechanical, thermal diffusivity, dielectric and fracture mechanical properties. The electrical percolation threshold is found to decrease by using ethanol as dispersion agent, compared to "dry" mixing, correlating with improved optical dispersion. The effect of nanoscopic gaps between adjacent CNTs on the electrical and thermal conductivity of the composites and the missing percolation behavior of the thermal conductivity are discussed. We have found some technically promising synergetic effects of the hybrid filler systems. For all systems one observes significantly steeper stress-strain curves by addition of 1.6 vol.% CNT to the systems with conventional fillers. In natural rubber the fatigue crack propagation resistance, tensile strength and electrical conductivity is found to be improved also for dry mixed CNT-silica hybrid systems. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2135 / 2143

页数：9

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