INFLUENCE OF THE ANTI-RADICAL EFFECT OF CARBON NANOTUBES ON THE MECHANICAL PROPERTIES OF COMPOSITES

Abstract

Abstract: Carbon nanotubes (CNTs) were incorporated into glass fiber (GF)/vinyl ester resins (VER) composites to improve their mechanical properties. However, when 0.4, 0.8, 1.2wt% CNTs were added into the composites, the interlaminar shear and longitudinal compressive strengths which were belong to the matrix-dominanted properties decreased from 52.32MPa and 258.34MPa to 45.14, 50.11, 42.14MPa and 240.99, 257.87, 235.27MPa, respectively. This indicates that the CNTs possessed an against effect to free radicals, resulting in the inhibition of the radical curing reaction of vinyl ester resin. A higher temperature initiator BPO was used to eliminate this negative effects from CNTs. Finally, the interlaminar shear and longitudinal compressive strengths of the CNTs/GF/VER composites increased to 63.25, 70.35, 60.57MPa and 299.12, 318.54, 280.11MPa, respectively. Meanwhile, the Dynamic Mechanical Analyzer (DMA) gave a consistent result, which confirmed the against effect to free radicals from CNTs.

Key words: CNTs, against effect to free radicals, composites, mechanical properties

CLC Number:

TB332

CHEN Hong-yan, HUANG Hua-bo, WANG Ji-hui. INFLUENCE OF THE ANTI-RADICAL EFFECT OF CARBON NANOTUBES ON THE MECHANICAL PROPERTIES OF COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(5): 32-36.

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