Electrostatically Flocked Graphite Fiber Interface for Thermally Conductive Structural 2D Laminate Graphite Fiber Reinforced Composites

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-12-C-0014
Agency Tracking Number: F10B-T01-0251
Amount: $99,847.00
Phase: Phase I
Program: STTR
Awards Year: 2012
Solicitation Year: 2010
Solicitation Topic Code: AF10-BT01
Solicitation Number: 2010.B
Small Business Information
Div. of Pascale Industries, Inc., 939 Currant Road, Fall River, MA, 02720-
DUNS: 839103348
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gerald Mauretti
 (508) 673-3307
Business Contact
 Gerald Mauretti
Title: President
Phone: (508) 673-3307
Email: gmauretti@eytechnologies.com
Research Institution
 University of Massachusetts - D
 Yong K Kim
 285 Old Westport Road
North Dartmouth, MA, 02747-2300
 (508) 999-8452
 Nonprofit college or university
ABSTRACT: The objective of the EY Technologies proposal is to develop a graphite fiber interface on the surface of a 2D graphite unidirectional tape to enhance the thermally conductive and structural properties on all axis of a composite, with emphasis in enhancing the Z-axis. Currently, industry has not been able to make 2D laminate composite from unidirectional materials that simultaneously meet thermally conductive and structural criteria on all axis, especially Z-axis, thus limiting the usefulness of composite materials to reduce weight in aircraft, directed energy systems and satellites. The present 2D structures can allow 120+W/mK on the x and y axis, while the proposed work will provide such thermal properties and improved structural properties in the"Z"direction also. The proposed method will provide for a continuous process to implant and orient short fibers (length= 0.5-1.0 mm) cut from graphite filaments into the 2D unidirectional reinforcement in-line with the prepreg process. The z-direction fiber can provide a continuous conductive path from layer to layer within the matrix, as a superior means to improving desired thermal and electrical criteria. Not only will the Z-axis laminar composite technology improve thermal and electrical performance, but will also improve fracture toughness quality as well. Flocking technique uses an electric field to propel short fibers onto an adhesive coated textile substrate where the fibers remain oriented in the"Z"direction. EYT proposes to adapt the process for incorporating flock fibers from graphite filaments in real time with the uni-tape resin impregnation process. This process approach will allow the Z-direction flock (graphite) fibers to provide a continuous conductive path from layer to layer in multi laminate composites, a far superior means to improving desired thermal and electrical criteria. Additionally, the Z-axis laminar composite technology will improve fracture toughness quality as well. BENEFIT: Positive results from this work will provide a platform of revolutionary technologies to enhance high performance composites with designed Z-axis reinforcement and enhanced properties such as thermal and electrical conductivity. There is seemingly unlimited fiber opportunities including organic, inorganic and even metallic that can be cut and flocked into composites performs, 2D and 3D, including 3D woven and braided and reinforcing fiber bundles and/or tows. The process to impinge and orient cut fiber for Z axis enhancement will be adaptable to individual cut pieces, continuous prepreg fabrics and even for in-line filament winding either onto the tow or directly on the rotating mandrel. The capital costs to adapt to traditional composite processing equipment are economical, readily available and required engineering of equipment and installation relatively simple.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government