Lightweight Electromagnetic Interference (EMI) Shielding System for Aircraft Avionics Navy SBIR FY2011.2 Sol No.: Navy SBIR FY2011.2 Topic No.: N112-097 Topic Title: Lightweight Electromagnetic Interference (EMI) Shielding System for Aircraft Avionics Proposal No.: N112-097-1212 Firm: NEI Corporation 400 E Apgar Drive Somerset, New Jersey 08873 Contact: Runqing Ou Phone: (732) 868-3141 Web Site: www.neicorporation.com Abstract: There is an unmet need in the US Navy for improved EMI shielding materials that can reduce signal interference between electronic equipment. Metals are a primary component in currently used EMI shields. Consequently, the shielding materials are heavy, and not optimally suitable for use in avionic electronic equipment. In the Phase I program, we propose to demonstrate the feasibility of a novel polymer/CNT nanocomposite material with enhanced electrical conductivity and EMI shielding effectiveness, compared to the state of the art metallic materials. A key aspect of the proposed program is that it utilizes a novel polymer morphology that results in a small concentration of CNTs leading to the desired electrical properties. The novel polymer/CNT nanocomposite material is expected to fulfill the materials property requirements for shielding avionic electronic equipment, particularly EMI shielding effectiveness and strength. A key advantage of the proposed nanocomposite material is that it can be made into a conductive heat shrink tubing, which can be applied to existing cable systems with a simple heat shrink treatment. The new materials will provide the Navy with a lightweight, durable, and long-lasting alternative to traditional metal braids. The Phase I program will demonstrate proof of concept on compression molded flat panels. The Phase II program will build upon the Phase I demonstration effort by implementing the technology in conductive heat shrink tubings for EMI shielding for the US Navy. Benefits: The proposed polymer/CNT nanocomposite technology will enable the US Navy to have a lightweight EMI shielding solution for avionic electronic equipment as a replacement for metal braids, which are currently used. A major benefit of the technology is its easy implementation as a conductive heat shrink material. The technology can also be applied in commercial applications where cables need EMI shielding and mechanical protection. The conductive heat shrink tubing can be applied to existing cable systems to provide added electrical and mechanical protection. Return