Aramid in 1980s: Helmets & vests · 406
Read the condition on Aramid before the nickname. Year 1980s, line “Helmets & vests,” figure 500. Circularity mark 38/100 — editorial, route-specific. A material is what it is made of, the condition it survives, and where it goes afterward. Aramid under “Helmets & vests” in 1980s should say which, with 500 tied to the condition. A figure with no condition is a boast. Readers meet the name on the back of a product, so the code and the history should not share one sentence.
Scores compare Aramid 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.
Aramid (PPTA (para) / meta-aramid cousin Nomex) is a family of grades whose density ~1.44 g/cm³, heat band does not melt; decomposes ~500 °C, and fire letter inherently FR vs commodity PA. Aramid is sold as grades, not as a single substance. Chemistry PPTA (para) / meta-aramid cousin Nomex, density ~1.44 g/cm³, heat band does not melt; decomposes ~500 °C.
This atlas treats Aramid as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: low radial; fibre anisotropic. Insulation score 36/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: inherently FR vs commodity PA. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
The label keeps Aramid, 1980s, and 500. “Helmets & vests” is the condition on the figure.1980s
Figures to keep
- Year of the condition
- 1980s
- Property figure
- 500
- Material
- Aramid
- Use line
- Helmets & vests