Phase-change material in 1970s: Salt-hydrate R&D
The behaviour of Phase-change material is written as 1970s’s “Salt-hydrate R&D,” fixed by 21. An advert’s adjective is not a melting point. “Room temperature” alone is not a figure. Uses span buildings to defence / safety. Pairings matter: mineral-wool.
Latent-heat packets that flatten temperature swings — not a substitute for λ insulation, a complement. Phase-change material is one of 32 materials in this atlas, grouped under thermal: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare Phase-change material 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.
Phase-change material (paraffins / salt hydrates / bio-waxes) is a family of grades whose density ~0.8–1.6 g/cm³, heat band designed 18–28 °C for buildings, and fire letter paraffin = combustible; salts vary. Phase-change material is sold as grades, not as a single substance. Chemistry paraffins / salt hydrates / bio-waxes, density ~0.8–1.6 g/cm³, heat band designed 18–28 °C for buildings.
“Salt-hydrate R&D” for Phase-change material in 1970s carries 21. Praise without that figure is not a property.1970s
Figures to keep
- Year of the condition
- 1970s
- Property figure
- 21
- Material
- Phase-change material
- Use line
- Salt-hydrate R&D