SEM micrographs of clay samples: (a) sonicated thermally exfoliated vermiculite
(UVMT); (b) sonicated thermally exfoliated and organomodified vermiculite (OVMT); (c) sepiolite (PGS9); and (d) organo-modified montmorillonite (C30B).
From the compaction of exfoliated vermiculite, it could result a porous material with very low permeability, good mechanical properties, chemical and thermal stability.
The moisture seems to be a crucial parameter for study of the mechanical behavior of compacted exfoliated vermiculite (CEV).
The vermiculite used in this study is exfoliated vermiculite Granutech E from China (Yuli), distributed by the Comptoir des Mineraux et de Matieres Premieres de Paris (CMMP).
In a separate application of ProWave technology, Silvaperl, a UK producer of exfoliated vermiculite
, is using a ProWave vermiculite processing system in a commercial field trial.
flakes, created by heating the sample, indicate accordion like expansion and the expansion is one and halftimes the raw sample (Figs.
The dispersion formulation uses exfoliated vermiculite with very large aspect ratio vermiculite plates mixed with butyl rubber.
All the formulations in this study are suspensions of butyl rubber and exfoliated vermiculite. Those that were not specially formulated to provide good flexibility trader all environmental conditions were used for the data (refs.
The exfoliated vermiculite we use has sheets between 1 and 3 nm thick.