石膏板 is one of 32 materials in this atlas, grouped under fire: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare 石膏板 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.
深入阅读
石膏板 (CaSO4·2H2O + paper faces) is a family of grades whose density ~700–1000 kg/m³, heat band calcines ~80–180 °C (dehydration), and fire letter A2-s1,d0 typical; core A1.
石膏板 is sold as grades, not as a single substance. Chemistry CaSO4·2H2O + paper faces, density ~700–1000 kg/m³, heat band calcines ~80–180 °C (dehydration).
This atlas treats 石膏板 as a system: mill route, coatings, tests and the cavity it sits in.
Conductivity note: ~0.17 W/m·K. Insulation score 34/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: A2-s1,d0 typical; core A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: Sackett 1894; US Gypsum 1916, United States. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: mineral-wool.
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 62/100. Ask which scrap, which certificate, which year.
United States · 1916–
Sheetrock is a reference point in the public image of 石膏板.
United States · 1950s–
Type X is a reference point in the public image of 石膏板.
Europe · 1990s–
EN 520 Type F is a reference point in the public image of 石膏板.
Global · 19th c.
Lath and plaster contrast is a reference point in the public image of 石膏板.
United States · 1970s–
Shaftwall C-H stud is a reference point in the public image of 石膏板.
United States · 1894–
Paper face is a reference point in the public image of 石膏板.
Global · industrial
Calcination kettle is a reference point in the public image of 石膏板.
Europe · 2010s–
Job-site recycling is a reference point in the public image of 石膏板.
开关图标后，柱会按所选集合的领先者重新缩放。
同一家族、不同分数 — 选一场。
六轴上最近的邻居 — 强度、耐热、火灾、隔热、加工性、循环性。