Gay-Lussac notes
Early ammonium-phosphate fire chemistry on textiles.
Intumescent coating · Paints that swell into insulating char — the thin-film way to give steel an R-rating without bulky boards.
Intumescent coating did not arrive as a finished commodity. 1960s–70s commercial IFR; cellulosic vs hydrocarbon curves around US / UK / DE still explains who makes it and which tests it sits in.
Ten dated points, five eras and three milestones below are the spine — not a complete industrial history.
Early ammonium-phosphate fire chemistry on textiles.
Intumescent patents on wood.
Commercial steel coatings.
Fire-resistance furnaces for coated beams.
Offshore UL 1709 rapid-rise curves.
Low-VOC cellulosic coatings for offices.
Thin-film exposed steel fashion.
Not a cladding PE-core fix.
Dry-film thickness as a profession.
Topcoats decide whether the char still works in year 15.
Early ammonium-phosphate fire chemistry on textiles.
Commercial steel coatings.
Offshore UL 1709 rapid-rise curves.
Thin-film exposed steel fashion.
Dry-film thickness as a profession.
Fire-resistance furnaces for coated beams.
Thin-film exposed steel fashion.
Topcoats decide whether the char still works in year 15.
Knowing this timeline is how to read a mill certificate without treating Intumescent coating as timeless.
CaSO4·2H2O panels that buy fire time by calcining — the everyday A2/A1 lining of interiors.
Overall 59 👨🚒DuPont’s meta-aramid — fire-fighter turnout, electrical paper and a char that does not melt-drip like nylon.
Overall 65 🌡️Spun refractory fibres for 1000–1400 °C — kiln linings, gaskets, and a respirable-fibre caution that AES grades try to ease.
Overall 62