The nitrogen gas shall be tion during subsequent tests. Wash the bar cavities and The gas shall be faltered using a Molecular acetone:ethanol solvent blend has been used successfully for Sieve 5A or equivalent.
Metal tubing for example, stainless this purpose. Mount the bar into the system without speci- steel or copper that is used for gas transfer shall be cleaned mens. Evacuate the system to 1 x 10m4 Pa 1 X 10m6 torr before use. Then turn off the wiping material is a h treatment in a Soxhlet extractor charged with a heater to the bar and allow the bar to cool under vacuum. Leave the heater chamber bar in place in the vacuum system. It need only by removed after the test for recleaning.
The Al. Seal A 1. A 1: 1 by volume acetone:ethanol solvent joints. The boats shall be weighed within one day of being blend has been used successfully for this purpose. Use filtered stored. Seal the unit with a low-vapor pressure degassing described in Al. Plates shall be weighed within support using a suitable solvent.
Ethanol has been used 1 day of being stored. Wipe followed to minimize handling of cleaned parts and the down the bell interior with a suitable solvent as required to introduction of contaminants after cleaning. Hence, all restore vacuum-operating efficiency. Ethanol has been used components that have been cleaned must be stored in such a successfully for this purpose. A 1: 1 by volume acetone:ethanol solvent tices in order to ensure good vacuum system performance.
DescdptiOm matedsl type, sampleJ form, cchr, etc. Conditim mix and oure, pm w poet oonditbn, as received, on substrate, etc. Manufacture Requesw. The American Society for Testing and Materials takes no position respechng the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
This standard is subject to revision af any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.
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Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. Hung Le. Daniel Sileshi. Jack B Nimble. Glen Monette. It is sufficient that the pressure be low enough that the mean free path of gas molecules be long in comparison to chamber dimensions. These include polymer potting compounds, foams, elastomers, films, tapes, insulations, shrink tubings, adhesives, coatings, fabrics, tie cords, and lubricants.
After a hour outgas exposure, the specimens and the condensing plates are weighed to determine mass loss, and the percentage of the volatile effluents that were collected during testing. Two parameters are measured: Outgassing in high-vacuum environments can disrupt electronic equipment and optical devices.
Terms and Conditions of Sale Contact. Most frequently associated with volatile asfmoutgassing occurs when gases and vapors are released from polymers and elastomers at above-ambient temperatures. In medical environments such as hospitals, AMCs can contaminate sterile surfaces. For engineers who need low outgassing compounds with the right balance of properties, post-conditioned SSP is an excellent choice. Previous Post Next Post. For more information about our ASTM E outgassing capabilities, or to request a quote, contact us today.
Our ASTM E testing services are critical to the material selection process for high vacuum applications. To obtain these values, multiple samples of this post-conditioned, nickel-graphite filled silicone were tested. Engage with an expert today. For example, materials that release high levels of airborne molecular contaminants AMCs can degrade the performance of sensors and circuit boards in satellites.
The fill material for SSP also costs less than silver-aluminum, silver-copper, or silver-glass. Samples tested at other temperatures may be compared only with other materials which were tested at that same temperature. Our deliverable is certainty — high quality data, test reports and certificates that you can absolutely rely on when making decisions about your materials and compliance.
Two parameters are measured: Link to Active This link will always route to the current Active version of the standard. The user may designate additional tests to qualify materials for a specific application.
Facebook Twitter Email Other. It is sufficient that the pressure be low enough that the mean free path of gas molecules be long in comparison to chamber dimensions. These include polymer potting compounds, foams, elastomers, films, tapes, insulations, shrink tubings, adhesives, coatings, fabrics, tie cords, and lubricants. Through optional post-conditioning, SSP can supply this nickel-graphite EMI elastomer in a low-outgassing grade upon request.
For engineers who need low outgassing compounds with the right balance of properties, post-conditioned SSP is an excellent choice. Ready to request a quote? This website uses cookies to improve user experience.
Historical Version s — view previous versions of standard. With the ability to cause damage and failure to mission-critical components, outgassing is an important characteristic to be considered in material selection.
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