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Wire Insulation Incorporating Self-Healing Polymers (WIISP), Phase I

Completed

Description

NextGen Aeronautics, Inc. and their partner, Virginia Tech, propose to develop a self-healing material for wire insulation using a class of poly(ethylene-co-methacrylic acid) (EMAA) and poly(tetramethylene oxide) ionomer polymers. The self-healing property of these materials is strongly correlated with the thermal processes that occur during and after damage initiation. Recent experimental results have demonstrated that penetration of the polymer by a projectile causes localized heating near the puncture. The heating then causes a localized melt elastic response which serves to close the puncture and 'heal' the polymer. Since self-healing has already been demonstrated using these materials, the major technical challenge of this STTR effort is to stimulate the localized melt elastic response that has been shown to initiate self-healing. Our concept is to incorporate a magnetically-response phase into the insulating polymer for the purpose of causing localized heating during high-frequency excitation of the polymer. This magnetic phase will be located close to the electrical conductor. Localized heating will cause flow into the crack and, upon cooling, the crack will close over the wire and eliminate the exposure of the bare wire.

Benefits

Self-healing wire insulation materials will have wide-spread commercial applications wherever electrical power is utilized ? all kinds of automobiles, commercial buildings, homes etc. They could also be used in computer systems to improve reliability and reduce maintenance. Utilizing self-healing materials for wire insulation will have direct benefits to an array of NASA commercial applications. These include development of smart, low-maintenance commercial transport and business aircraft, the next generation of spacecraft and inter-planetary vehicles, as well as mission critical infra-structures such as launch platforms and complex support equipment.

Details

Technology areaThermal Management Systems > Thermal Protection Components and Systems > Thermal Protection Materials
ProgramSmall Business Innovation Research/Small Business Tech Transfer (SBIR/STTR)
Lead organizationJohnson Space Center, Houston, TX
Start date2005-01-21
End date2006-01-23

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How to get involved

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

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