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Flexible Polyisocyanate Based Aerogels

Published online by Cambridge University Press:  02 May 2017

Roxana Trifu ,
George Gould  and
Shannon White
Roxana Trifu*
Affiliation:
Aspen Aerogels Inc., 30 Forbes Rd., Northborough, MA 01532, U.S.A.
George Gould
Affiliation:
Aspen Aerogels Inc., 30 Forbes Rd., Northborough, MA 01532, U.S.A.
Shannon White
Affiliation:
Aspen Aerogels Inc., 30 Forbes Rd., Northborough, MA 01532, U.S.A.
*
*(Email: [email protected])
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Abstract

Highly flexible, durable aerogels with textile feel were developed at Aspen Aerogels Inc. by sol-gel chemistry and supercritical CO2 solvent extraction. These polyisocyanate-based aerogels reinforced with battings showed little to no brittle fracture with repeated flexing. The crosslinker, the isocyanate content and functionality played an important role on properties such as thermal conductivity, durability and flexural modulus at ambient and cryogenic temperatures. The polyisocyanate aerogels crosslinked with polyamine showed thermal conductivities as low as 18 mW/m-K at ambient pressure and those crosslinked with polyol had low flexural modulus at cryogenic temperatures. Applications of these aerogels in aerospace and diving are presented.

Keywords

aerogelcompositeinsulator
Type
Articles
Information
MRS Advances , Volume 2 , Issue 57: Nanomaterials , 2017 , pp. 3479 - 3484
Copyright
Copyright © Materials Research Society 2017 

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References

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