Improved Carbon Nanofiber/Polymer Composites by Low Shear Compounding

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,999.00
Award Year:
2002
Program:
SBIR
Phase:
Phase I
Contract:
F33615-02-M-5026
Award Id:
57605
Agency Tracking Number:
021ML-2945
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
141 W. Xenia Ave., PO Box 579, Cedarville, OH, 45314
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
173666215
Principal Investigator:
RonaldJacobsen
Senior Research Scientist
(937) 766-2020
rljacobsen@apsci.com
Business Contact:
MaxLake
President
(937) 766-2020
mllake@apsci.com
Research Institute:
n/a
Abstract
"Carbon nanofiber reinforced polymer composites are anticipated to offer a suite of physical property advantages similar to conventional carbon fiber composites reinforced with PAN- or pitch-based carbon fiber. Early results show high promise for use ofcarbon nanofibers to enhance the physical properties, including electrical conductivity, coefficient of thermal expansion, strength, and modulus, of polymer composites. An artifact of high volume methods of production for carbon nanofibers and nanotubesis that fibers are generated in a birdnested form, and are difficult to separate in compounding into a uniform dispersion throughout the matrix polymer. In order to disperse other nanoparticle additives such as carbon black or nanoclays, high shear mixingis frequently used; however, when applied to nanotubes and nanofibers, the aspect ratio of the fibers may be seriously compromised, reducing the reinforcement value of the nanofiber. As a result, the observed physical properties for carbon nanofiberreinforced polymers represent only a small fraction of the values predicted by theory. It is proposed to use methods of low shear processing, low viscosity resins and in situ polymerization to create masterbatch compounds of uniformly dispersed carbonnanofibers where the high aspect ratio of the as-grown carbon nanofiber is preserved. The Air Force has a variety of aircraft and satellite applications that a successfully developed material

* information listed above is at the time of submission.

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