Cis-1,4-polyisoprène d’Hevea : les pneus boivent l’essentiel du latex.
Aussi appelé: NR · polyisoprene · latex rubber
Gradstudentscholar · CC BY-SA 4.0
Repères
Hevea brasiliensisTree
Sulfur vulcanisationCure
Tyre piles burn hotFire
Pneumatic tyreIcon
SBR / BRSynth rival
polymersFamily
Caoutchouc naturel is one of 32 materials in this atlas, grouped under polymers: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare Caoutchouc naturel 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.
Introduction approfondie
Deep dive: Caoutchouc naturel
Caoutchouc naturel ((C5H8)n cis-1,4) is a family of grades whose density ~0.92 g/cm³, heat band elastomer; decomposes on heat, and fire letter combustible; tyres are a fire load.
What “the material” actually is
Caoutchouc naturel is sold as grades, not as a single substance. Chemistry (C5H8)n cis-1,4, density ~0.92 g/cm³, heat band elastomer; decomposes on heat.
This atlas treats Caoutchouc naturel as a system: mill route, coatings, tests and the cavity it sits in.
Heat, fire and insulation
Conductivity note: ~0.15 W/m·K. Insulation score 38/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: combustible; tyres are a fire load. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
How it is made and used
Origin: Mesoamerican use / Goodyear 1839 / Wickham 1876, Amazonia → Malaysia. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: silicone.
Market and circularity
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 46/100. Ask which scrap, which certificate, which year.
Atlas lié
Around Caoutchouc naturel
Related atlas entries, a short glossary, and three threads that keep Caoutchouc naturel honest.