Difference between revisions of "Outgassing"

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<h1>Safe Materials</h1>
 
<h1>Safe Materials</h1>
The following are a sample list of brands with tested and approved materials for use in space per [https://outgassing.nasa.gov NASA].
+
The following are a sample list of brands or brand series with tested and approved materials for use in space per [https://outgassing.nasa.gov NASA]. Visit the outgassing database for the complete list.
 
<h2>Adhesives</h2>
 
<h2>Adhesives</h2>
 
<ul>
 
<ul>
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<li>Uniset</li>
 
<li>Uniset</li>
 
<li>Uralane</li>
 
<li>Uralane</li>
 +
</ul>
 +
<h2>Cable Insulation & Shrink Tubing</h2>
 +
A lot of cable insulation is classified by its type (wire insulation, shrink tubing, silicone wire insulation, etc.) Check the outgassing database for more details.
 +
<ul>
 +
<li>Alpha Wire</li>
 +
<li>Amberstrand</li>
 +
<li>Belden</li>
 +
<li>Gore-Tex</li>
 +
<li>Raychem</li>
 +
<li>Round Robin</li>
 +
<li>Teflon</li>
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</ul>
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<h2>Conformal Coating</h2>
 +
Based on outgassing and the research conducted for [[Conformal Coatings | conformal coatings]], this [https://www.digikey.ca/product-detail/en/chemtronics/CTSR-P/75-CTSR-P-ND/10229793 product] is a good candidate for all our cubesat requirements.
 +
<ul>
 +
<li>Accumask</li>
 +
<li>Aptek</li>
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<li>Conathane</li>
 +
<li>Dynamask</li>
 +
<li>Eccocoat</li>
 +
<li>Enplate</li>
 +
<li>Epoxy</li>
 +
<li>Fine-L-Kote</li>
 +
<li>Humiseal</li>
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<li>Konform</li>
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<li>Parylene</li>
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<li>Resiweld</li>
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<li>Solithane</li>
 +
<li>Stycast</li>
 +
<li>Uralane</li>
 +
<li>Wondermask</li>
 
</ul>
 
</ul>

Revision as of 09:10, 15 June 2019

Outgassing, also known as offgassing, is the release of gas or vapour from a particular material or substance, typically when heat is applied. When considering materials that can be sent to space, the material's outgassing must be considered as they can react negatively to a combination of vacuum (no atmospheric pressure) and relatively high temperatures compared to the earth's surface.

When some materials are sent to space, their outgassing vapours can evaporate or boil in the low pressure, high temperature environments and this could be detrimental to the CubeSat.

Things to consider when selecting materials

Since the phenomenon of outgassing occurs by the release of trapped vapours and gas in the material, very porous materials should not be used as it allows the gasses to be released more easily.

Additionally, materials with high vapour pressure should not be used.

Safe Materials

The following are a sample list of brands or brand series with tested and approved materials for use in space per NASA. Visit the outgassing database for the complete list.

Adhesives

  • Ablebond
  • Angstrom Bond
  • Crest
  • Dymax
  • Eccobond
  • Eccoseal
  • Epo-Tek
  • Hysol
  • Loctite
  • Master Bond
  • Oxy-Bond
  • Round Robin
  • Scotchweld
  • Supertherm
  • Tra-Bond
  • Uniset
  • Uralane

Cable Insulation & Shrink Tubing

A lot of cable insulation is classified by its type (wire insulation, shrink tubing, silicone wire insulation, etc.) Check the outgassing database for more details.

  • Alpha Wire
  • Amberstrand
  • Belden
  • Gore-Tex
  • Raychem
  • Round Robin
  • Teflon

Conformal Coating

Based on outgassing and the research conducted for conformal coatings, this product is a good candidate for all our cubesat requirements.

  • Accumask
  • Aptek
  • Conathane
  • Dynamask
  • Eccocoat
  • Enplate
  • Epoxy
  • Fine-L-Kote
  • Humiseal
  • Konform
  • Parylene
  • Resiweld
  • Solithane
  • Stycast
  • Uralane
  • Wondermask