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Kapton is a polyimide film used in flexible printed circuits (flexible electronics) and space blankets, which are used on spacecraft, satellites, and various space instruments. Invented by the DuPont Corporation in the 1960s, Kapton remains stable across a wide range of temperatures, from 4 to 673 K (−269 to +400 °C). Kapton is used in ...
MLI gives many satellites and other space probes the appearance of being covered with gold foil which is the effect of the amber-coloured Kapton layer deposited over the silver Aluminized mylar. For non-spacecraft applications, MLI works only as part of a vacuum insulation system. [1]
A space blanket (also known as a Mylar blanket, emergency blanket, first aid blanket, safety blanket, thermal blanket, weather blanket, heat sheet, foil blanket, or shock blanket) is an especially low-weight, low-bulk blanket made of heat-reflective thin plastic sheeting. They are used on the exterior surfaces of spacecraft for thermal control ...
Chemical structure of Kapton, a polyimide. Polyimide (sometimes abbreviated PI) is a polymer containing imide groups belonging to the class of high-performance plastics.With their high heat-resistance, polyimides enjoy diverse applications in roles demanding rugged organic materials, such as high temperature fuel cells, displays, and various military roles.
For comparison, 5 micrometre thick Mylar sail material mass 7 g/m 2, aluminized Kapton films have a mass as much as 12 g/m 2, [56] and Energy Science Laboratories' new carbon fiber material masses 3 g/m 2. [60] The least dense metal is lithium, about 5 times less dense than aluminium. Fresh, unoxidized surfaces are reflective.
Thermal conductivities have been measured with longitudinal heat flow methods where the experimental arrangement is so designed to accommodate heat flow in only the axial direction, temperatures are constant, and radial heat loss is prevented or minimized.
Kapton is a type of polyimide film, has very low outgassing. Kapton is discouraged if a ceramic alternative can be used. [3] Some elastomers have sufficient vacuum properties to be employed in vacuum o-rings: NBRs, (nitrile rubber), commonly used for demountable vacuum seals (bakeable only up to 100 °C).
The Comparative Tracking Index (CTI) is used to measure the electrical breakdown (tracking) properties of an insulating material.Tracking is an electrical breakdown on the surface of an insulating material wherein an initial exposure to electrical arcing heat carbonizes the material.