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Outlast launches aramid-based aerogels

Extremely thin flame-resistant materials are almost unaffected by moisture or pressure.

13th May 2024

Innovation in Textiles
 |  Heidenheim/Brenz, Germany


Outlast Technologies has introduced new Aersulate aerogels based on aramid fibres which open up completely new application possibilities.

These flame-resistant materials are very thin and unlike other insulations are almost unaffected by moisture and pressure.

Aerogels are made from silica, the basic material of sand, and have been successfully used by NASA. They have a highly porous structure with an air content of about 98%, making them the lightest solid materials in the world. This high air content and the microporous structure typical of aerogels are ideal prerequisites for highly functional insulation materials.

Based on extensive research and development, Outlast has now succeeded in permanently bonding aerogels to textile substrates in very high concentrations, without affecting the original properties of the textile or modifying subsequent processing procedures, leading to excellent insulating performance.

When comparing identical nonwoven substrates with and without Aersulate technology, Outlast achieves an increase in thermal resistance of up to 100%. At the same time, the fabrics are very breathable, highly hydrophobic and can be equipped with additional FR properties when requested.

“While conventional insulation materials usually achieve their functionality through increased thickness, Aersulate products are extremely thin,” said Outlast CEO Martin Bentz. “Materials as thin as 1-2 mm can provide excellent insulation offering new potential, whether in the classic consumer goods sector, in technical applications or in the security and construction sector.”

The range of possible carrier materials that can be equipped with the aerogels is also diverse. In addition to aramid-based qualities, it currently ranges from nonwovens and felts to various composite systems with knitted fabrics.

The aerogel used in Aersulate is produced in Germany and is said to be harmless to both health and environment.

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