| Technology |
Dessicants in IG
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Dessicants were introduced to remove the moister trapped within the IG unit. However not all desiccants work, as some do not absorb water only but also inert gas between the panes, provoking a lower thermal performance of the insulating glass.
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 Desiccants, also known as molecular sieves, are a crucial component of each insulating glass window. These chemical substances are placed inside the IG spacers in order to perform one precise function: moisture prevention. Fogging inside the insulating glass is not only annoying but can also cause permanent staining of the glass. Moisture enters the IG unit during manufacture, and even continues to penetrate the sealant throughout the entire life of the window. To perform this function, the desiccant should have the following characteristics: water and hydrocarbons absorption, non/absorption of krypton, argon or other "thermal performance" gases, and should not contain pre-sorbed nitrogen. See additional information on the selected links.
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Photos: siliporite.com
Last review: April, 2004 |
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| Other Net Sources |
SorbentSystems
How are "Adsorption" and "Absorption" Different? How Do Desiccants Work? How are Desiccants Rated? How Does Moisture Cause Damage to a Product?
Atofina
Why are desiccants required? Types of desiccants, what to look for in a desiccant, recommendations, etc.
UOP
Information about dessicants: how they work, what they should prevent, etc.
Thermoseal
Why are Molecular Sieves used in Insulating Glass Units?
Molecular Sieves
How to use dessicants to reduce moisture.
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