Organic-inorganic hybrid foams with diatomite addition: Effect on functional properties

Organic–inorganic hybrid foams were prepared by using metakaolin, diatomite as a partial (or total) replacement of metakaolin, as matrix, silicon and whipped protein as pore forming. The foamed systems were hardened at defined temperature and time and then characterized by mechanical point of view t...

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Bibliographic Details
Main Authors: Verdolotti, L., D’Auria, M., Lavorgna, M., Vollaro, P., Iannace, S., Capasso, I., Galzerano, B., Caputo, D., Liguori, B.
Format: Conference Proceeding
Language:English
Subjects:
Acoustic tests
Compression tests
Cone calorimeters
Diatomaceous earth
Flammability
Foams
Mechanical properties
Metakaolin
Morphology
Performance enhancement
Pore formation
Proteins
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Summary:Organic–inorganic hybrid foams were prepared by using metakaolin, diatomite as a partial (or total) replacement of metakaolin, as matrix, silicon and whipped protein as pore forming. The foamed systems were hardened at defined temperature and time and then characterized by mechanical point of view through compression tests and by functional point of view through fire reaction and acoustic tests. The experimental findings highlighted that the replacement of diatomite in the formulation affected the morphological structure of the foams and consequently their mechanical properties. In particular, the consolidation mechanism in the diatomite based-hybrid foams changed from geopolymerization to a silicate polycondensation mechanism. Therefore, mechanical performances enhanced with increasing of the diatomite content. Fire reaction tests, such as non-combustibility and cone calorimeter tests, showed positive thermal inertia of samples regardless of the content of diatomite.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4949702