Relationship Between Filler Type, Thermomechanical Properties, and Aging of RTV Silicone Foams.

ABSTRACT: Room-temperature vulcanizing (RTV) silicone foams are used in many industrial applications that require the material to perform over long time periods. However, mechanical properties tend to deteriorate when these foams age under a compressive load. The chemical aging is attributed to the presence of unreacted functional groups of the prepolymers, residues from acid, and catalytically active tin (II) species. Here, an optimized thermal treatment of an RTV foam that achieves completion of curing reactions and deactivation of reactive species is proposed. Foams that were thermally aged for three months under compressive load showed no signs of compression set, indicative of the effectiveness of the implemented post-curing approach. In addition, the effects of fillers (diatomaceous earth, fum

SUBMITTER: Torres XM 

PROVIDER: S-EPMC12300107 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature