Abstract
Insulating materials for use in cryogenic boundary conditions are still limited to a proved selection as Polyamid, Glasfiber reinforced resins, PEEK, Vespel etc. These materials are usually formed to parts by mechanical machining or sometimes by cast methods. Shaping complex geometries in one piece is limited. Innovative 3D printing is now an upcoming revolutionary technology to construct functional parts from a couple of thermoplastic materials as ABS, Nylon and others which possess quite good mechanical stability and allow realizing very complex shapes with very subtle details. Even a wide range of material mixtures is an option and thermal treatments can be used to finish the material structure for higher performance. The use of such materials in cryogenic environment is very attractive but so far poor experience exists. In this paper, first investigations of the thermal conductivity, expansion and mechanical strength are presented for a few selected commercial 3D material samples to evaluate their application prospects in the cryogenic temperature regime.
Highlights
The application of High Temperature Superconductors is expanding to a couple of new fields, in particular space and airborne applications
Insulating materials for use in cryogenic boundary conditions are still limited to a proved selection as Polyamid, Glasfiber reinforced resins, PEEK, Vespel etc
Resins and polymers have the disadvantage of a high thermal contraction compared to metals and superconductors, which leads in composites to a thermal mismatch upon cooling to cryogenic temperatures
Summary
Series: Materials Science and Engineering 102 (2015) 012022 doi:10.1088/1757-899X/102/1/012022. K-P Weiss, N Bagrets, C Lange, W Goldacker, J Wohlgemuth2 1Institute for Technical Physics, Karlsruher Institute of Technology, Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany 2Institute of Functional Interfaces, Karlsruher Institute of Technology, Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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