6. Examples of geopolymerization
In the following examples, we perform mild, low-caustic alkalination using sodium or potassium silicate solutions with SiO 2 :Na 2 O or SiO 2 :K 2 O molar ratios of between 1.45 and 1.85.
In this article, we focus on the reactivity of a mineral that was at the origin of the discovery of geopolymers, namely calcined kaolinite, or metakaolinite, referred to as metakaolin or MK-750 to indicate the calcination temperature. This raw material is free of impurities, enabling simpler analysis of the alkaline geopolymerization mechanism.
This chemistry of silicates and aluminosilicates is based on three complementary processes:...
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Examples of geopolymerization
Conclusion
Bibliography
Website
Geopolymer Institute http://www.geopolymer.org/
Event
GEOPOLYMER CAMP, takes place every year in Saint-Quentin (Aisne), 2nd week of July. http://www.geopolymer.org/camp
Patents
Selected from INPI's Espacenet database, Paris
Inorganic polymer, FR2464227
Synthetic inorganic polymer of the silicoaluminate family and process for its preparation EP0026687
Expanded mineral materials based on silico-aluminates of the K-Poly(Sialate) and/or (Na,K)-Poly(Sialate-siloxo) type FR2512805
Process for producing floor...
Directory
Laboratories – Design offices – Schools – Research centers (non-exhaustive list)
École supérieure physique et chimie industrielles, Physico-chemistry of Polymers and Dispersed Media http://www.ppmd.espci.fr
French Petroleum Institute http://www.ifp.fr
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