Thermoplastic Polyurethane Nanocomposites Produced via Impregnation of Long Carbon Nanotube Forests

被引：10
作者：
Silva, Glaura G. [1 ]
Rodrigues, Marco-Tulio F. [1 ]
Fantini, Cristiano [1 ]
Borges, Raquel S. [1 ]
Pimenta, Marcos A. [1 ]
Carey, Brent J. [2 ]
Ci, Lijie [2 ]
Ajayan, Pulickel M. [2 ]
机构：
[1] Univ Fed Minas Gerais, Inst Ciencias Exatas, Belo Horizonte, MG, Brazil
[2] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77251 USA
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2011年 / 296卷 / 01期
关键词：
carbon nanotubes; electrical properties; mechanical properties; nanocomposites; thermal properties; POLYMER NANOCOMPOSITES; ELECTRICAL-CONDUCTIVITY; COMPOSITE FILMS; DEFORMATION; ABSORPTION; ELASTOMERS; MORPHOLOGY; SCIENCE; NMR;
D O I：
10.1002/mame.201000276
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TPU was infiltrated into vertically aligned, 3.5 mm-long MWNT forests to produce continuously reinforced anisotropic nanocomposites, and thermomechanical and electrical testing has revealed multifunctionality which shows promise for numerous applications. A 1000% increase in the storage modulus at 70 degrees C was observed as compared to the neat TPU, and these continuously aligned composites showed electrical conductivity two orders-of-magnitude greater (approximate to 1.5 S.cm(-1)) than randomly aligned composites prepared using CNTs from these forests. The heightened improvement for the continuously reinforced composite appears to be owed to the extremely high aspect ratio of these CNTs and the interconnected network which remains after infiltration.
引用
收藏
页码：53 / 58
页数：6
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