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Erschienen in:
1986 | OriginalPaper | Buchkapitel
MDF Cements for Low Temperature Applications
verfasst von : B. A. Hands, A. J. Smith, G. W. Groves, D. D. Double
Erschienen in: Nonmetallic Materials and Composites at Low Temperatures
Verlag: Springer US
Enthalten in: Professional Book Archive
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A pilot study to investigate some low temperature properties of macro-defect free cements has been carried out. That based on Ordinary Portland Cement was initially unsuitable for use at cryogenic temperatures due to the development of thermal cracks on cooling. However, the addition of a latex enables strength to be maintained down to 4.2K. That made from High Alumina Cement is also found to be suitable for use down to 4.2K. Both types are non-porous, no leaks being detectable through a 2mm thick sheet when using a helium leak detector. Thermal contraction data has also been obtained.Possible cryogenic applications include components for superconducting magnets, vacuum equipment, and containers for refrigerants.