Polyethylene in 1933: ICI high-pressure
Read the condition on Polyethylene before the nickname. Year 1933, line “ICI high-pressure,” figure 110. This atlas treats Polyethylene as a system: mill route, coatings, tests and the cavity it sits in.
Scores compare Polyethylene 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.
Polyethylene ((C2H4)n) is a family of grades whose density 0.91–0.97 g/cm³, heat band LDPE ~110 °C; HDPE ~130 °C, and fire letter combustible olefin. Polyethylene is sold as grades, not as a single substance. Chemistry (C2H4)n, density 0.91–0.97 g/cm³, heat band LDPE ~110 °C; HDPE ~130 °C.
Conductivity note: ~0.4 W/m·K. Insulation score 44/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: combustible olefin. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide. Origin: ICI 1933 / Ziegler–Natta 1950s, United Kingdom / Germany. The process chapter follows feedstock → conversion → forming → finish → install.
The label keeps Polyethylene, 1933, and 110. “ICI high-pressure” is the condition on the figure.1933
Figures to keep
- Year of the condition
- 1933
- Property figure
- 110
- Material
- Polyethylene
- Use line
- ICI high-pressure
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