Water sorption in silicone foam containing diatomaceous earth

Rutherford, Shannon; Coons, J. E.

doi:10.1016/j.jcis.2006.10.068

Cited by 16 publications

(11 citation statements)

References 29 publications

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“…Diatomaceous earth (DE), a siliceous, sedimentary rock consisting principally of the fossilized diatom skeletal, is an attractive and adequate material that offers a great application in industry owing to its unique properties of low bulk density, high porosity with strong adsorbability, chemically inert in most liquids, and gases and thermal resistance 1–4…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of mesoporous materials from diatomaceous earth

et al. 2007

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in Wiley InterScience (www.interscience.wiley.com).Hydrothermal synthesis of mesoporous materials from diatomaceous earth has been carried out under saturated steam pressure (0.2-1.56 MPa) at 393-473 K for up to 72 h by slaked lime introduction. During the hydrothermal synthesis process, calcium silicate hydrate (CSH) was among the first phase formed and invariably appeared before tobermorite. The CSH formation seemed to exert a positive effect on the strength development and pore size evolution initially; whilst the tobermorite formation appeared to further enhance the strength and narrow the pore size. With curing at 473 K for 18 h, both of the strength and pore size distribution tended to reach optimal at which the pore size distribution also ranges between mesoporous area (2-50 nm in diameter). The highest strength seemed to coincide with the finest pore size distribution of the synthesized porous material during hydrothermal processing in this study.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of mesoporous materials from diatomaceous earth

et al. 2007

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“…More importantly, further annealing of Celite Ò 350 did not result in significant changes in the EPR signal indicating that either the structural water in lepidocrocite cannot be easily driven off in this material or more likely, the hydroxylated silica (opal) dominates the water equilibration. The possibility remains that Celite Ò 350 could slowly desorb water and therefore account for the bulk water desorption process seen by Rutherford and Coons [5], but the present study indicates that the lepidocrocite oxides in the diatomaceous earth are a marker for the water content rather than directly participating in this process.…”

Section: Discussionmentioning

confidence: 50%

“…While polysiloxanes are not hygroscopic, fillers used to reinforce polysiloxanes can absorb water. Rutherford and Coons [5] observed that RTV polysiloxane foam containing diatomaceous earth filler showed a dual-mode water sorption behavior that included a fast, Henry's law mode and a slow model that required months to equilibrate with the ambient moisture level. They found that the diatomaceous earth was responsible for the slow mode.…”

Section: Introductionmentioning

confidence: 99%

EPR and Mössbauer characterization of RTV polysiloxane foams and their constituents

Blair

Muenchausen

Taylor

et al. 2008

Polymer Degradation and Stability

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“…To confirm the consistency, we also conducted the similar test using the MTS system. It is well known that the presence of moisture will affect the mechanical properties of the foam [3,4]. To minimize this effect, prior to testing, this set of samples was vacuumed at room temperature for over night.…”

Section: Resultsmentioning

confidence: 99%

“…In the SX358 foam, ~15% of diatomaceous earth (DE) filler material is typically added for special purposes. The DE materials -a type of amorphous silica, have strong affinity to water molecules [3][4][5]. Many studies demonstrated that the presence of moisture in the DE filled foam alters the property of the foam.…”

Section: Summary and Future Workmentioning

confidence: 99%