ShareTemperature behaviour of permeation of helium through Vespel and Torlon.
Author(s) : SCHMIDTCHEN U., GRADT T., BORNER H., BEHREND E.
Type of article: Article
Summary
The paper reports measurements on the solubility and the diffusion constant of helium in two widely used polymers as a function of temperature. A continuous flow cryostat and a helium leak detector were the key elements of the experimental set-up. The results show that while the permeation flow of helium through polymers can be considerable at ambient temperature, it ceases to be a problem at temperatures of 200 K or below. For certain applications, however, this effect may be a serious problem and must be considered.
Details
- Original title: Temperature behaviour of permeation of helium through Vespel and Torlon.
- Record ID : 1994-2702
- Languages: English
- Source: Cryogenics - vol. 34 - n. 2
- Publication date: 1994/02
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- Date : 1988
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