Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 40, Issue 9, Pages 1470-1475Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2009.05.010
Keywords
Glass fibers; Nanostructures; Thermomechanical; Multiscale composites
Funding
- National Science Foundation Division of Materials Research [0404278]
- Alabama Space Grant Consortium NASA Training [NNG05GE805]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0404278] Funding Source: National Science Foundation
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Vacuum assisted resin infusion molding (VARIM) was used to produce multiscale fiber reinforced composites (M-FRCs) based on carbon nanofibers dispersed in an epoxy resin. Flexural, interlaminar shear strength (ILSS) and thermomechanical tests are presented for the 0.1 wt% and 1 wt% M-FRCs and compared with the neat fiber reinforced composites (FRCs). Flexural strength and modulus increased (16-20%) and (23-26%), respectively for the 0.1 wt% and 1 wt% M-FRCs when compared to the neat FRCs. ILSS properties increased (6% and 25%) for the 0.1 wt% and 1 wt% M-FRCs, respectively when compared to neat FRCs. The glass transition temperatures (T-g) of both M-FRC samples were 25 degrees C higher than the neat FRC. Coefficients of thermal expansion (CTE) of the M-FRC samples improved compared to the neat FRC. The improved T-g and CTE properties in the M-FRC samples are attributed to synergistic interactions between the CNF/PNC matrix and glass fibers. (C) 2009 Elsevier Ltd. All rights reserved.
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