Aerogel in 1931: Kistler
The behaviour of Aerogel is written as 1931’s “Kistler,” fixed by 0. An advert’s adjective is not a melting point. “Room temperature” alone is not a figure. A nanoscale silica sponge — among the lowest solid λ values, fragile unless blanketed, and A1 when purely inorganic.
Aerogel is one of 32 materials in this atlas, grouped under advanced: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue. Scores compare Aerogel with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number. Aerogel (SiO2 network + >90% air) is a family of grades whose density ~0.003–0.15 g/cm³, heat band silica sinters; organic aerogels burn, and fire letter silica A1; polymer aerogels not.
Aerogel is sold as grades, not as a single substance. Chemistry SiO2 network + >90% air, density ~0.003–0.15 g/cm³, heat band silica sinters; organic aerogels burn. This atlas treats Aerogel as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: silica blankets ~0.015–0.025 W/m·K class. Insulation score 98/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
“Kistler” for Aerogel in 1931 carries 0. Praise without that figure is not a property.1931
Figures to keep
- Year of the condition
- 1931
- Property figure
- 0
- Material
- Aerogel
- Use line
- Kistler
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