Effect of aging on the reinforcement efficiency of carbon nanotubes in epoxy matrix

被引：10

作者：

Allaoui, A. ^{[1
]}

Evesque, P. ^{[1
]}

Bai, J. B. ^{[1
]}

机构：

[1] Ecole Cent Paris, LMSSMAT, CNRS, UMR8579, F-92290 Chatenay Malabry, France

来源：

JOURNAL OF MATERIALS SCIENCE | 2008年 / 43卷 / 14期

关键词：

D O I：

10.1007/s10853-008-2728-5

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

An investigation was conducted to study the elastic properties of carbon nanotube (CNT) reinforced epoxy composites and the effect of aging on the reinforcement efficiency of CNT by means of cyclic uniaxial tensile tests at increasing maximum strain and constant strain amplitude. The modulus of the composites was found to decrease with increasing maximum cycle strain in a similar manner to the Payne effect in filled rubbers, which refers to the modulus decrease with increasing strain amplitude. The reinforcement was effective at sufficient low strain, and the average tensile modulus of these CVD CNTs can be deduced using the mixture law to be around 580 GPa. The CNT reinforcement efficiency diminished at higher strains, and this tendency was amplified by aging. Further investigations may help to point out possible additional reinforcement due to CNT entanglement effect or polymer chains reduced mobility at the vicinity of CNT.

引用

页码：5020 / 5022

页数：3

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