Embedded microcapsule technologies and shape memory materials developed for space continue to find spiriting new applications. Outlast phase change technology - originally developed for NASA, has established itself in a wide range of fabrics and garments. Outlast phase change technology is also used in a new role as a wrap label for bottles keeping heat from the hand away from a drink to ensure it stays colder longer. Eurali's microencapsulation technique enables liquids or solids to be wrapped in a membrane of a synthetic or natural polymer. Depending on their end use the microcapsules can contain a perfume, an active cosmetics, or an antibacterial agent. The encapsulated product is released either when the membrane is broken or by slow and progressive diffusion through the membrane. Schoeller Textile's c_change bionic climate membrane is a hydrophilic membrane set to a particular temperature range and as soon as higher temperatures or body warmth resulting greater moisture which has to be wicked away, it reacts. The flexible polymer structure adjusts to allow water vapour to escape quickly to the outside air. Composite Technology Development (CTD), USA has developed tembo elastic memory composite hinges which are being tested on the International Space Station (ISS). The elastic memory composite hinges (EMCH) build on the previous shuttle mid-deck experiment developed by Lockheed for the Air Force Lightweight Flexible Solar Array Hinge. CTD has developed elastic memory composite (EMC) materials based on proprietary thermoset shape memory polymers which enable the practical use of their properties in fibre-reinforced composites and other speciality materials. EMC materials are similar to traditional fibre-reinforced composites except for the use of an elastic memory thermoset resin-matrix. The elastic memory matrix is a fully cured polymer which can be combined with a wide variety of fibre and particulate reinforcements and fillers. At lower temperatures their performance follows classical composite laminate theory. A heatshield repair material using Starfire Systems' pre-ceramic polymers was also tested on the Discovery space shuttle in 2006. The sealant might eventually be used in an emergency situation to repair small cracks or punctures on future missions.
Rocket science and refreshment
Future Materials - fm ; 1 ; 6-8
2007
3 Seiten, 5 Bilder
Article (Journal)
English